diff --git a/MAINTAINERS b/MAINTAINERS
index d91f6c6e3d3b5c38b270fbaae91864ba93640e00..237046f8a499ab313f024b48f9d3239b1ae99065 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -15930,7 +15930,6 @@ F: arch/*/ptrace*.c
F: include/asm-generic/syscall.h
F: include/linux/ptrace.h
F: include/linux/regset.h
-F: include/linux/tracehook.h
F: include/uapi/linux/ptrace.h
F: include/uapi/linux/ptrace.h
F: kernel/ptrace.c
diff --git a/arch/Kconfig b/arch/Kconfig
index 84bc1de02720b490a4397398c4886d94775980fc..305f741f3fab25bc7dc23815779fb38b8583cdda 100644
--- a/arch/Kconfig
+++ b/arch/Kconfig
@@ -217,9 +217,8 @@ config TRACE_IRQFLAGS_SUPPORT
# asm/syscall.h supplying asm-generic/syscall.h interface
# linux/regset.h user_regset interfaces
# CORE_DUMP_USE_REGSET #define'd in linux/elf.h
-# TIF_SYSCALL_TRACE calls tracehook_report_syscall_{entry,exit}
-# TIF_NOTIFY_RESUME calls tracehook_notify_resume()
-# signal delivery calls tracehook_signal_handler()
+# TIF_SYSCALL_TRACE calls ptrace_report_syscall_{entry,exit}
+# TIF_NOTIFY_RESUME calls resume_user_mode_work()
#
config HAVE_ARCH_TRACEHOOK
bool
diff --git a/arch/alpha/kernel/ptrace.c b/arch/alpha/kernel/ptrace.c
index 8c43212ae38e6bb8bbf9b2386e1e0089b248b6ba..a1a239ea002d850902f0eacc217e9dc66c88929e 100644
--- a/arch/alpha/kernel/ptrace.c
+++ b/arch/alpha/kernel/ptrace.c
@@ -15,7 +15,6 @@
#include <linux/user.h>
#include <linux/security.h>
#include <linux/signal.h>
-#include <linux/tracehook.h>
#include <linux/audit.h>
#include <linux/uaccess.h>
@@ -323,7 +322,7 @@ asmlinkage unsigned long syscall_trace_enter(void)
unsigned long ret = 0;
struct pt_regs *regs = current_pt_regs();
if (test_thread_flag(TIF_SYSCALL_TRACE) &&
- tracehook_report_syscall_entry(current_pt_regs()))
+ ptrace_report_syscall_entry(current_pt_regs()))
ret = -1UL;
audit_syscall_entry(regs->r0, regs->r16, regs->r17, regs->r18, regs->r19);
return ret ?: current_pt_regs()->r0;
@@ -334,5 +333,5 @@ syscall_trace_leave(void)
{
audit_syscall_exit(current_pt_regs());
if (test_thread_flag(TIF_SYSCALL_TRACE))
- tracehook_report_syscall_exit(current_pt_regs(), 0);
+ ptrace_report_syscall_exit(current_pt_regs(), 0);
}
diff --git a/arch/alpha/kernel/signal.c b/arch/alpha/kernel/signal.c
index d8ed71d5bed3cfcf50a8ec7d2dcaf07265eed488..6f47f256fe8077cb924e2ed392c57b75e0e8ad3d 100644
--- a/arch/alpha/kernel/signal.c
+++ b/arch/alpha/kernel/signal.c
@@ -22,7 +22,7 @@
#include <linux/binfmts.h>
#include <linux/bitops.h>
#include <linux/syscalls.h>
-#include <linux/tracehook.h>
+#include <linux/resume_user_mode.h>
#include <linux/uaccess.h>
#include <asm/sigcontext.h>
@@ -531,7 +531,7 @@ do_work_pending(struct pt_regs *regs, unsigned long thread_flags,
do_signal(regs, r0, r19);
r0 = 0;
} else {
- tracehook_notify_resume(regs);
+ resume_user_mode_work(regs);
}
}
local_irq_disable();
diff --git a/arch/arc/kernel/ptrace.c b/arch/arc/kernel/ptrace.c
index 883391977fdfaa3e671abe0a9d6c98436e6f3e88..54b419ac8bda73e6a08e3b9aa6a3d2e20522d970 100644
--- a/arch/arc/kernel/ptrace.c
+++ b/arch/arc/kernel/ptrace.c
@@ -4,7 +4,6 @@
*/
#include <linux/ptrace.h>
-#include <linux/tracehook.h>
#include <linux/sched/task_stack.h>
#include <linux/regset.h>
#include <linux/unistd.h>
@@ -258,7 +257,7 @@ long arch_ptrace(struct task_struct *child, long request,
asmlinkage int syscall_trace_entry(struct pt_regs *regs)
{
- if (tracehook_report_syscall_entry(regs))
+ if (ptrace_report_syscall_entry(regs))
return ULONG_MAX;
return regs->r8;
@@ -266,5 +265,5 @@ asmlinkage int syscall_trace_entry(struct pt_regs *regs)
asmlinkage void syscall_trace_exit(struct pt_regs *regs)
{
- tracehook_report_syscall_exit(regs, 0);
+ ptrace_report_syscall_exit(regs, 0);
}
diff --git a/arch/arc/kernel/signal.c b/arch/arc/kernel/signal.c
index cb2f88502bafe2797b04a471a07bd7b49dbaa1e2..f748483628f2c22ec98408c056d417f0fe580179 100644
--- a/arch/arc/kernel/signal.c
+++ b/arch/arc/kernel/signal.c
@@ -49,7 +49,7 @@
#include <linux/personality.h>
#include <linux/uaccess.h>
#include <linux/syscalls.h>
-#include <linux/tracehook.h>
+#include <linux/resume_user_mode.h>
#include <linux/sched/task_stack.h>
#include <asm/ucontext.h>
@@ -438,5 +438,5 @@ void do_notify_resume(struct pt_regs *regs)
* user mode
*/
if (test_thread_flag(TIF_NOTIFY_RESUME))
- tracehook_notify_resume(regs);
+ resume_user_mode_work(regs);
}
diff --git a/arch/arm/kernel/ptrace.c b/arch/arm/kernel/ptrace.c
index 43b963ea4a0e2cffca46d74ccf8e3f2b9d41544c..bfe88c6e60d587c6566748ee41f7e2b024c4787a 100644
--- a/arch/arm/kernel/ptrace.c
+++ b/arch/arm/kernel/ptrace.c
@@ -22,7 +22,6 @@
#include <linux/hw_breakpoint.h>
#include <linux/regset.h>
#include <linux/audit.h>
-#include <linux/tracehook.h>
#include <linux/unistd.h>
#include <asm/syscall.h>
@@ -831,8 +830,7 @@ enum ptrace_syscall_dir {
PTRACE_SYSCALL_EXIT,
};
-static void tracehook_report_syscall(struct pt_regs *regs,
- enum ptrace_syscall_dir dir)
+static void report_syscall(struct pt_regs *regs, enum ptrace_syscall_dir dir)
{
unsigned long ip;
@@ -844,8 +842,8 @@ static void tracehook_report_syscall(struct pt_regs *regs,
regs->ARM_ip = dir;
if (dir == PTRACE_SYSCALL_EXIT)
- tracehook_report_syscall_exit(regs, 0);
- else if (tracehook_report_syscall_entry(regs))
+ ptrace_report_syscall_exit(regs, 0);
+ else if (ptrace_report_syscall_entry(regs))
current_thread_info()->abi_syscall = -1;
regs->ARM_ip = ip;
@@ -856,7 +854,7 @@ asmlinkage int syscall_trace_enter(struct pt_regs *regs)
int scno;
if (test_thread_flag(TIF_SYSCALL_TRACE))
- tracehook_report_syscall(regs, PTRACE_SYSCALL_ENTER);
+ report_syscall(regs, PTRACE_SYSCALL_ENTER);
/* Do seccomp after ptrace; syscall may have changed. */
#ifdef CONFIG_HAVE_ARCH_SECCOMP_FILTER
@@ -897,5 +895,5 @@ asmlinkage void syscall_trace_exit(struct pt_regs *regs)
trace_sys_exit(regs, regs_return_value(regs));
if (test_thread_flag(TIF_SYSCALL_TRACE))
- tracehook_report_syscall(regs, PTRACE_SYSCALL_EXIT);
+ report_syscall(regs, PTRACE_SYSCALL_EXIT);
}
diff --git a/arch/arm/kernel/signal.c b/arch/arm/kernel/signal.c
index c532a60410667f64c9acded52cab4d4f0d9fd4a8..459abc5d1819537bad3f92696681074839254aaa 100644
--- a/arch/arm/kernel/signal.c
+++ b/arch/arm/kernel/signal.c
@@ -9,7 +9,7 @@
#include <linux/signal.h>
#include <linux/personality.h>
#include <linux/uaccess.h>
-#include <linux/tracehook.h>
+#include <linux/resume_user_mode.h>
#include <linux/uprobes.h>
#include <linux/syscalls.h>
@@ -627,7 +627,7 @@ do_work_pending(struct pt_regs *regs, unsigned int thread_flags, int syscall)
} else if (thread_flags & _TIF_UPROBE) {
uprobe_notify_resume(regs);
} else {
- tracehook_notify_resume(regs);
+ resume_user_mode_work(regs);
}
}
local_irq_disable();
diff --git a/arch/arm64/kernel/ptrace.c b/arch/arm64/kernel/ptrace.c
index 39dbdfdc38d361fd5690f4f966d09d86edf67f58..230a47b9189e79ed0eeba8f92f14aa2d984c07e8 100644
--- a/arch/arm64/kernel/ptrace.c
+++ b/arch/arm64/kernel/ptrace.c
@@ -27,7 +27,6 @@
#include <linux/perf_event.h>
#include <linux/hw_breakpoint.h>
#include <linux/regset.h>
-#include <linux/tracehook.h>
#include <linux/elf.h>
#include <asm/compat.h>
@@ -1792,8 +1791,7 @@ enum ptrace_syscall_dir {
PTRACE_SYSCALL_EXIT,
};
-static void tracehook_report_syscall(struct pt_regs *regs,
- enum ptrace_syscall_dir dir)
+static void report_syscall(struct pt_regs *regs, enum ptrace_syscall_dir dir)
{
int regno;
unsigned long saved_reg;
@@ -1819,11 +1817,11 @@ static void tracehook_report_syscall(struct pt_regs *regs,
regs->regs[regno] = dir;
if (dir == PTRACE_SYSCALL_ENTER) {
- if (tracehook_report_syscall_entry(regs))
+ if (ptrace_report_syscall_entry(regs))
forget_syscall(regs);
regs->regs[regno] = saved_reg;
} else if (!test_thread_flag(TIF_SINGLESTEP)) {
- tracehook_report_syscall_exit(regs, 0);
+ ptrace_report_syscall_exit(regs, 0);
regs->regs[regno] = saved_reg;
} else {
regs->regs[regno] = saved_reg;
@@ -1833,7 +1831,7 @@ static void tracehook_report_syscall(struct pt_regs *regs,
* tracer modifications to the registers may have rewound the
* state machine.
*/
- tracehook_report_syscall_exit(regs, 1);
+ ptrace_report_syscall_exit(regs, 1);
}
}
@@ -1842,7 +1840,7 @@ int syscall_trace_enter(struct pt_regs *regs)
unsigned long flags = read_thread_flags();
if (flags & (_TIF_SYSCALL_EMU | _TIF_SYSCALL_TRACE)) {
- tracehook_report_syscall(regs, PTRACE_SYSCALL_ENTER);
+ report_syscall(regs, PTRACE_SYSCALL_ENTER);
if (flags & _TIF_SYSCALL_EMU)
return NO_SYSCALL;
}
@@ -1870,7 +1868,7 @@ void syscall_trace_exit(struct pt_regs *regs)
trace_sys_exit(regs, syscall_get_return_value(current, regs));
if (flags & (_TIF_SYSCALL_TRACE | _TIF_SINGLESTEP))
- tracehook_report_syscall(regs, PTRACE_SYSCALL_EXIT);
+ report_syscall(regs, PTRACE_SYSCALL_EXIT);
rseq_syscall(regs);
}
diff --git a/arch/arm64/kernel/signal.c b/arch/arm64/kernel/signal.c
index 50fe8eaf7df000a9eabb01d7f0a1e5f363b9b35b..4a4122ef6f39b43abfaec5de4ea1514f62563768 100644
--- a/arch/arm64/kernel/signal.c
+++ b/arch/arm64/kernel/signal.c
@@ -16,7 +16,7 @@
#include <linux/uaccess.h>
#include <linux/sizes.h>
#include <linux/string.h>
-#include <linux/tracehook.h>
+#include <linux/resume_user_mode.h>
#include <linux/ratelimit.h>
#include <linux/syscalls.h>
@@ -942,7 +942,7 @@ void do_notify_resume(struct pt_regs *regs, unsigned long thread_flags)
do_signal(regs);
if (thread_flags & _TIF_NOTIFY_RESUME)
- tracehook_notify_resume(regs);
+ resume_user_mode_work(regs);
if (thread_flags & _TIF_FOREIGN_FPSTATE)
fpsimd_restore_current_state();
diff --git a/arch/csky/kernel/ptrace.c b/arch/csky/kernel/ptrace.c
index 1a5f54e0d272631137179c848715a7ab8a5791ff..0f7e7b653c72b3b718ac06e9d8b77dce65832a17 100644
--- a/arch/csky/kernel/ptrace.c
+++ b/arch/csky/kernel/ptrace.c
@@ -12,7 +12,6 @@
#include <linux/sched/task_stack.h>
#include <linux/signal.h>
#include <linux/smp.h>
-#include <linux/tracehook.h>
#include <linux/uaccess.h>
#include <linux/user.h>
@@ -321,7 +320,7 @@ long arch_ptrace(struct task_struct *child, long request,
asmlinkage int syscall_trace_enter(struct pt_regs *regs)
{
if (test_thread_flag(TIF_SYSCALL_TRACE))
- if (tracehook_report_syscall_entry(regs))
+ if (ptrace_report_syscall_entry(regs))
return -1;
if (secure_computing() == -1)
@@ -339,7 +338,7 @@ asmlinkage void syscall_trace_exit(struct pt_regs *regs)
audit_syscall_exit(regs);
if (test_thread_flag(TIF_SYSCALL_TRACE))
- tracehook_report_syscall_exit(regs, 0);
+ ptrace_report_syscall_exit(regs, 0);
if (test_thread_flag(TIF_SYSCALL_TRACEPOINT))
trace_sys_exit(regs, syscall_get_return_value(current, regs));
diff --git a/arch/csky/kernel/signal.c b/arch/csky/kernel/signal.c
index 8867ddf3e6c7712731745f215b21d7f6e1851e53..b7b3685283d763ca9fb9bb1ae1c7358f1f895630 100644
--- a/arch/csky/kernel/signal.c
+++ b/arch/csky/kernel/signal.c
@@ -3,7 +3,7 @@
#include <linux/signal.h>
#include <linux/uaccess.h>
#include <linux/syscalls.h>
-#include <linux/tracehook.h>
+#include <linux/resume_user_mode.h>
#include <asm/traps.h>
#include <asm/ucontext.h>
@@ -265,5 +265,5 @@ asmlinkage void do_notify_resume(struct pt_regs *regs,
do_signal(regs);
if (thread_info_flags & _TIF_NOTIFY_RESUME)
- tracehook_notify_resume(regs);
+ resume_user_mode_work(regs);
}
diff --git a/arch/h8300/kernel/ptrace.c b/arch/h8300/kernel/ptrace.c
index a11db009d0ea0d907e41a089eaac9157cd87bf51..a9898b27b7567684b2fcc8c9ccb47c219ced981b 100644
--- a/arch/h8300/kernel/ptrace.c
+++ b/arch/h8300/kernel/ptrace.c
@@ -12,7 +12,6 @@
#include <linux/errno.h>
#include <linux/ptrace.h>
#include <linux/audit.h>
-#include <linux/tracehook.h>
#include <linux/regset.h>
#include <linux/elf.h>
@@ -174,7 +173,7 @@ asmlinkage long do_syscall_trace_enter(struct pt_regs *regs)
long ret = 0;
if (test_thread_flag(TIF_SYSCALL_TRACE) &&
- tracehook_report_syscall_entry(regs))
+ ptrace_report_syscall_entry(regs))
/*
* Tracing decided this syscall should not happen.
* We'll return a bogus call number to get an ENOSYS
@@ -196,5 +195,5 @@ asmlinkage void do_syscall_trace_leave(struct pt_regs *regs)
step = test_thread_flag(TIF_SINGLESTEP);
if (step || test_thread_flag(TIF_SYSCALL_TRACE))
- tracehook_report_syscall_exit(regs, step);
+ ptrace_report_syscall_exit(regs, step);
}
diff --git a/arch/h8300/kernel/signal.c b/arch/h8300/kernel/signal.c
index 75a1c36b105a18b3d07347ea576a30b4cb89d2e3..0716fc8a8ce2dd9ffb7bb4a5aa11902aa886bea5 100644
--- a/arch/h8300/kernel/signal.c
+++ b/arch/h8300/kernel/signal.c
@@ -39,7 +39,7 @@
#include <linux/personality.h>
#include <linux/tty.h>
#include <linux/binfmts.h>
-#include <linux/tracehook.h>
+#include <linux/resume_user_mode.h>
#include <asm/setup.h>
#include <linux/uaccess.h>
@@ -283,5 +283,5 @@ asmlinkage void do_notify_resume(struct pt_regs *regs, u32 thread_info_flags)
do_signal(regs);
if (thread_info_flags & _TIF_NOTIFY_RESUME)
- tracehook_notify_resume(regs);
+ resume_user_mode_work(regs);
}
diff --git a/arch/hexagon/kernel/process.c b/arch/hexagon/kernel/process.c
index dfa6b2757c05cf18b75a1e3be68a915942c45d40..eab03c691f53f3197891f803dbfa0d5ae6a1612a 100644
--- a/arch/hexagon/kernel/process.c
+++ b/arch/hexagon/kernel/process.c
@@ -14,7 +14,7 @@
#include <linux/tick.h>
#include <linux/uaccess.h>
#include <linux/slab.h>
-#include <linux/tracehook.h>
+#include <linux/resume_user_mode.h>
/*
* Program thread launch. Often defined as a macro in processor.h,
@@ -177,7 +177,7 @@ int do_work_pending(struct pt_regs *regs, u32 thread_info_flags)
}
if (thread_info_flags & _TIF_NOTIFY_RESUME) {
- tracehook_notify_resume(regs);
+ resume_user_mode_work(regs);
return 1;
}
diff --git a/arch/hexagon/kernel/signal.c b/arch/hexagon/kernel/signal.c
index 94cc7ff52dce80eeceec6c1d57f22777704cc840..bcba31e9e0aebc89e8648009d31f1cac4af1195a 100644
--- a/arch/hexagon/kernel/signal.c
+++ b/arch/hexagon/kernel/signal.c
@@ -7,7 +7,6 @@
#include <linux/linkage.h>
#include <linux/syscalls.h>
-#include <linux/tracehook.h>
#include <linux/sched/task_stack.h>
#include <asm/registers.h>
diff --git a/arch/hexagon/kernel/traps.c b/arch/hexagon/kernel/traps.c
index 1240f038cce02b0f47e02f5becd561711303d4bb..6447763ce5a941ba94a7dd03494a9c5e2980f75e 100644
--- a/arch/hexagon/kernel/traps.c
+++ b/arch/hexagon/kernel/traps.c
@@ -14,7 +14,7 @@
#include <linux/kdebug.h>
#include <linux/syscalls.h>
#include <linux/signal.h>
-#include <linux/tracehook.h>
+#include <linux/ptrace.h>
#include <asm/traps.h>
#include <asm/vm_fault.h>
#include <asm/syscall.h>
@@ -348,7 +348,7 @@ void do_trap0(struct pt_regs *regs)
/* allow strace to catch syscall args */
if (unlikely(test_thread_flag(TIF_SYSCALL_TRACE) &&
- tracehook_report_syscall_entry(regs)))
+ ptrace_report_syscall_entry(regs)))
return; /* return -ENOSYS somewhere? */
/* Interrupts should be re-enabled for syscall processing */
@@ -386,7 +386,7 @@ void do_trap0(struct pt_regs *regs)
/* allow strace to get the syscall return state */
if (unlikely(test_thread_flag(TIF_SYSCALL_TRACE)))
- tracehook_report_syscall_exit(regs, 0);
+ ptrace_report_syscall_exit(regs, 0);
break;
case TRAP_DEBUG:
diff --git a/arch/ia64/kernel/process.c b/arch/ia64/kernel/process.c
index 834df24a88f12cd0514770f51dccd2cea04f773f..d7a256bd9d6b76e555fd53a7bfcb0e06c7b3fea4 100644
--- a/arch/ia64/kernel/process.c
+++ b/arch/ia64/kernel/process.c
@@ -32,7 +32,7 @@
#include <linux/delay.h>
#include <linux/kdebug.h>
#include <linux/utsname.h>
-#include <linux/tracehook.h>
+#include <linux/resume_user_mode.h>
#include <linux/rcupdate.h>
#include <asm/cpu.h>
@@ -179,7 +179,7 @@ do_notify_resume_user(sigset_t *unused, struct sigscratch *scr, long in_syscall)
if (test_thread_flag(TIF_NOTIFY_RESUME)) {
local_irq_enable(); /* force interrupt enable */
- tracehook_notify_resume(&scr->pt);
+ resume_user_mode_work(&scr->pt);
}
/* copy user rbs to kernel rbs */
diff --git a/arch/ia64/kernel/ptrace.c b/arch/ia64/kernel/ptrace.c
index 6a1439eaa0506b7ab2b19ab1824bade0b5e51409..a19acd9f5e1f6ce0399d8e0e4d2a5afa036d38f3 100644
--- a/arch/ia64/kernel/ptrace.c
+++ b/arch/ia64/kernel/ptrace.c
@@ -23,7 +23,7 @@
#include <linux/signal.h>
#include <linux/regset.h>
#include <linux/elf.h>
-#include <linux/tracehook.h>
+#include <linux/resume_user_mode.h>
#include <asm/processor.h>
#include <asm/ptrace_offsets.h>
@@ -1217,7 +1217,7 @@ syscall_trace_enter (long arg0, long arg1, long arg2, long arg3,
struct pt_regs regs)
{
if (test_thread_flag(TIF_SYSCALL_TRACE))
- if (tracehook_report_syscall_entry(®s))
+ if (ptrace_report_syscall_entry(®s))
return -ENOSYS;
/* copy user rbs to kernel rbs */
@@ -1243,7 +1243,7 @@ syscall_trace_leave (long arg0, long arg1, long arg2, long arg3,
step = test_thread_flag(TIF_SINGLESTEP);
if (step || test_thread_flag(TIF_SYSCALL_TRACE))
- tracehook_report_syscall_exit(®s, step);
+ ptrace_report_syscall_exit(®s, step);
/* copy user rbs to kernel rbs */
if (test_thread_flag(TIF_RESTORE_RSE))
diff --git a/arch/ia64/kernel/signal.c b/arch/ia64/kernel/signal.c
index c1b299760bf7a91082efc743c9876be81a3fe2c1..51cf6a7ec158ab68ec41c00b25484fbf3f0f5826 100644
--- a/arch/ia64/kernel/signal.c
+++ b/arch/ia64/kernel/signal.c
@@ -12,7 +12,6 @@
#include <linux/kernel.h>
#include <linux/mm.h>
#include <linux/ptrace.h>
-#include <linux/tracehook.h>
#include <linux/sched.h>
#include <linux/signal.h>
#include <linux/smp.h>
diff --git a/arch/m68k/kernel/ptrace.c b/arch/m68k/kernel/ptrace.c
index aa3a0b8d07e9ca0ac3a920b5f2076e4bb4459da6..6342ff4d2073f58e5d82959ae075c1379013e3b9 100644
--- a/arch/m68k/kernel/ptrace.c
+++ b/arch/m68k/kernel/ptrace.c
@@ -19,7 +19,6 @@
#include <linux/ptrace.h>
#include <linux/user.h>
#include <linux/signal.h>
-#include <linux/tracehook.h>
#include <linux/uaccess.h>
#include <asm/page.h>
@@ -282,13 +281,13 @@ asmlinkage int syscall_trace_enter(void)
int ret = 0;
if (test_thread_flag(TIF_SYSCALL_TRACE))
- ret = tracehook_report_syscall_entry(task_pt_regs(current));
+ ret = ptrace_report_syscall_entry(task_pt_regs(current));
return ret;
}
asmlinkage void syscall_trace_leave(void)
{
if (test_thread_flag(TIF_SYSCALL_TRACE))
- tracehook_report_syscall_exit(task_pt_regs(current), 0);
+ ptrace_report_syscall_exit(task_pt_regs(current), 0);
}
#endif /* CONFIG_COLDFIRE */
diff --git a/arch/m68k/kernel/signal.c b/arch/m68k/kernel/signal.c
index 338817d0cb3fb100609c1c38dc899d27ff5508ba..49533f65958a64a9710fd3d3c44edef6b63865a5 100644
--- a/arch/m68k/kernel/signal.c
+++ b/arch/m68k/kernel/signal.c
@@ -43,7 +43,7 @@
#include <linux/tty.h>
#include <linux/binfmts.h>
#include <linux/extable.h>
-#include <linux/tracehook.h>
+#include <linux/resume_user_mode.h>
#include <asm/setup.h>
#include <linux/uaccess.h>
@@ -1109,5 +1109,5 @@ void do_notify_resume(struct pt_regs *regs)
do_signal(regs);
if (test_thread_flag(TIF_NOTIFY_RESUME))
- tracehook_notify_resume(regs);
+ resume_user_mode_work(regs);
}
diff --git a/arch/microblaze/kernel/ptrace.c b/arch/microblaze/kernel/ptrace.c
index badd286882ae6865c069f9ae6107e4e7708f45e4..5234d0c1dcaad3f71dd56ca62ad1c3ac2011d4ec 100644
--- a/arch/microblaze/kernel/ptrace.c
+++ b/arch/microblaze/kernel/ptrace.c
@@ -33,7 +33,6 @@
#include <linux/elf.h>
#include <linux/audit.h>
#include <linux/seccomp.h>
-#include <linux/tracehook.h>
#include <linux/errno.h>
#include <asm/processor.h>
@@ -140,7 +139,7 @@ asmlinkage unsigned long do_syscall_trace_enter(struct pt_regs *regs)
secure_computing_strict(regs->r12);
if (test_thread_flag(TIF_SYSCALL_TRACE) &&
- tracehook_report_syscall_entry(regs))
+ ptrace_report_syscall_entry(regs))
/*
* Tracing decided this syscall should not happen.
* We'll return a bogus call number to get an ENOSYS
@@ -161,7 +160,7 @@ asmlinkage void do_syscall_trace_leave(struct pt_regs *regs)
step = test_thread_flag(TIF_SINGLESTEP);
if (step || test_thread_flag(TIF_SYSCALL_TRACE))
- tracehook_report_syscall_exit(regs, step);
+ ptrace_report_syscall_exit(regs, step);
}
void ptrace_disable(struct task_struct *child)
diff --git a/arch/microblaze/kernel/signal.c b/arch/microblaze/kernel/signal.c
index 873e05c940211edfdbafa7faee245c9df5472967..c3aebec71c0ce25aaff9ea287a32950df254d396 100644
--- a/arch/microblaze/kernel/signal.c
+++ b/arch/microblaze/kernel/signal.c
@@ -31,7 +31,7 @@
#include <linux/personality.h>
#include <linux/percpu.h>
#include <linux/linkage.h>
-#include <linux/tracehook.h>
+#include <linux/resume_user_mode.h>
#include <asm/entry.h>
#include <asm/ucontext.h>
#include <linux/uaccess.h>
@@ -311,5 +311,5 @@ asmlinkage void do_notify_resume(struct pt_regs *regs, int in_syscall)
do_signal(regs, in_syscall);
if (test_thread_flag(TIF_NOTIFY_RESUME))
- tracehook_notify_resume(regs);
+ resume_user_mode_work(regs);
}
diff --git a/arch/mips/kernel/ptrace.c b/arch/mips/kernel/ptrace.c
index db7c5be1d4a352d0a0cb093cfadccae9d9308375..567aec4abac0f4898083f77674cf26b1ad87265c 100644
--- a/arch/mips/kernel/ptrace.c
+++ b/arch/mips/kernel/ptrace.c
@@ -27,7 +27,6 @@
#include <linux/smp.h>
#include <linux/security.h>
#include <linux/stddef.h>
-#include <linux/tracehook.h>
#include <linux/audit.h>
#include <linux/seccomp.h>
#include <linux/ftrace.h>
@@ -1317,7 +1316,7 @@ asmlinkage long syscall_trace_enter(struct pt_regs *regs, long syscall)
current_thread_info()->syscall = syscall;
if (test_thread_flag(TIF_SYSCALL_TRACE)) {
- if (tracehook_report_syscall_entry(regs))
+ if (ptrace_report_syscall_entry(regs))
return -1;
syscall = current_thread_info()->syscall;
}
@@ -1376,7 +1375,7 @@ asmlinkage void syscall_trace_leave(struct pt_regs *regs)
trace_sys_exit(regs, regs_return_value(regs));
if (test_thread_flag(TIF_SYSCALL_TRACE))
- tracehook_report_syscall_exit(regs, 0);
+ ptrace_report_syscall_exit(regs, 0);
user_enter();
}
diff --git a/arch/mips/kernel/signal.c b/arch/mips/kernel/signal.c
index 71e309be86a23b68d487249f9373f9a64b7dde74..479999b7f2de73227b6145f82303256a4402ac43 100644
--- a/arch/mips/kernel/signal.c
+++ b/arch/mips/kernel/signal.c
@@ -25,7 +25,7 @@
#include <linux/compiler.h>
#include <linux/syscalls.h>
#include <linux/uaccess.h>
-#include <linux/tracehook.h>
+#include <linux/resume_user_mode.h>
#include <asm/abi.h>
#include <asm/asm.h>
@@ -915,7 +915,7 @@ asmlinkage void do_notify_resume(struct pt_regs *regs, void *unused,
do_signal(regs);
if (thread_info_flags & _TIF_NOTIFY_RESUME)
- tracehook_notify_resume(regs);
+ resume_user_mode_work(regs);
user_enter();
}
diff --git a/arch/nios2/kernel/ptrace.c b/arch/nios2/kernel/ptrace.c
index a6ea9e1b4f6160e4bb2341a36f041ed6dfc6f585..cd62f310778b9846d44511663bf181fe4de709c5 100644
--- a/arch/nios2/kernel/ptrace.c
+++ b/arch/nios2/kernel/ptrace.c
@@ -15,7 +15,6 @@
#include <linux/regset.h>
#include <linux/sched.h>
#include <linux/sched/task_stack.h>
-#include <linux/tracehook.h>
#include <linux/uaccess.h>
#include <linux/user.h>
@@ -134,7 +133,7 @@ asmlinkage int do_syscall_trace_enter(void)
int ret = 0;
if (test_thread_flag(TIF_SYSCALL_TRACE))
- ret = tracehook_report_syscall_entry(task_pt_regs(current));
+ ret = ptrace_report_syscall_entry(task_pt_regs(current));
return ret;
}
@@ -142,5 +141,5 @@ asmlinkage int do_syscall_trace_enter(void)
asmlinkage void do_syscall_trace_exit(void)
{
if (test_thread_flag(TIF_SYSCALL_TRACE))
- tracehook_report_syscall_exit(task_pt_regs(current), 0);
+ ptrace_report_syscall_exit(task_pt_regs(current), 0);
}
diff --git a/arch/nios2/kernel/signal.c b/arch/nios2/kernel/signal.c
index 386e46443b605676c92a55fb47245b919be751db..cb0b91589cf202f3d81243ffa7be7bd8bc0a2d26 100644
--- a/arch/nios2/kernel/signal.c
+++ b/arch/nios2/kernel/signal.c
@@ -15,7 +15,7 @@
#include <linux/uaccess.h>
#include <linux/unistd.h>
#include <linux/personality.h>
-#include <linux/tracehook.h>
+#include <linux/resume_user_mode.h>
#include <asm/ucontext.h>
#include <asm/cacheflush.h>
@@ -321,7 +321,7 @@ asmlinkage int do_notify_resume(struct pt_regs *regs)
return restart;
}
} else if (test_thread_flag(TIF_NOTIFY_RESUME))
- tracehook_notify_resume(regs);
+ resume_user_mode_work(regs);
return 0;
}
diff --git a/arch/openrisc/kernel/ptrace.c b/arch/openrisc/kernel/ptrace.c
index 4d60ae2a12fac977e479353500be7da6046b91e5..b971740fc2aa982a7c683fe69b1b75fc24df2b98 100644
--- a/arch/openrisc/kernel/ptrace.c
+++ b/arch/openrisc/kernel/ptrace.c
@@ -22,7 +22,6 @@
#include <linux/ptrace.h>
#include <linux/audit.h>
#include <linux/regset.h>
-#include <linux/tracehook.h>
#include <linux/elf.h>
#include <asm/thread_info.h>
@@ -159,7 +158,7 @@ asmlinkage long do_syscall_trace_enter(struct pt_regs *regs)
long ret = 0;
if (test_thread_flag(TIF_SYSCALL_TRACE) &&
- tracehook_report_syscall_entry(regs))
+ ptrace_report_syscall_entry(regs))
/*
* Tracing decided this syscall should not happen.
* We'll return a bogus call number to get an ENOSYS
@@ -181,5 +180,5 @@ asmlinkage void do_syscall_trace_leave(struct pt_regs *regs)
step = test_thread_flag(TIF_SINGLESTEP);
if (step || test_thread_flag(TIF_SYSCALL_TRACE))
- tracehook_report_syscall_exit(regs, step);
+ ptrace_report_syscall_exit(regs, step);
}
diff --git a/arch/openrisc/kernel/signal.c b/arch/openrisc/kernel/signal.c
index 92c5b70740f53821acbcd3b0c173d1711690bf59..80f69740c731d3196d0956e821e07ed5a9248068 100644
--- a/arch/openrisc/kernel/signal.c
+++ b/arch/openrisc/kernel/signal.c
@@ -21,7 +21,7 @@
#include <linux/ptrace.h>
#include <linux/unistd.h>
#include <linux/stddef.h>
-#include <linux/tracehook.h>
+#include <linux/resume_user_mode.h>
#include <asm/processor.h>
#include <asm/syscall.h>
@@ -309,7 +309,7 @@ do_work_pending(struct pt_regs *regs, unsigned int thread_flags, int syscall)
}
syscall = 0;
} else {
- tracehook_notify_resume(regs);
+ resume_user_mode_work(regs);
}
}
local_irq_disable();
diff --git a/arch/parisc/kernel/ptrace.c b/arch/parisc/kernel/ptrace.c
index 65de6c4c9354d6754091435943146acc8a726483..96ef6a6b66e5644d3f6c8a6078b364b7f021b36e 100644
--- a/arch/parisc/kernel/ptrace.c
+++ b/arch/parisc/kernel/ptrace.c
@@ -15,7 +15,6 @@
#include <linux/elf.h>
#include <linux/errno.h>
#include <linux/ptrace.h>
-#include <linux/tracehook.h>
#include <linux/user.h>
#include <linux/personality.h>
#include <linux/regset.h>
@@ -316,7 +315,7 @@ long compat_arch_ptrace(struct task_struct *child, compat_long_t request,
long do_syscall_trace_enter(struct pt_regs *regs)
{
if (test_thread_flag(TIF_SYSCALL_TRACE)) {
- int rc = tracehook_report_syscall_entry(regs);
+ int rc = ptrace_report_syscall_entry(regs);
/*
* As tracesys_next does not set %r28 to -ENOSYS
@@ -327,7 +326,7 @@ long do_syscall_trace_enter(struct pt_regs *regs)
if (rc) {
/*
* A nonzero return code from
- * tracehook_report_syscall_entry() tells us
+ * ptrace_report_syscall_entry() tells us
* to prevent the syscall execution. Skip
* the syscall call and the syscall restart handling.
*
@@ -381,7 +380,7 @@ void do_syscall_trace_exit(struct pt_regs *regs)
#endif
if (stepping || test_thread_flag(TIF_SYSCALL_TRACE))
- tracehook_report_syscall_exit(regs, stepping);
+ ptrace_report_syscall_exit(regs, stepping);
}
diff --git a/arch/parisc/kernel/signal.c b/arch/parisc/kernel/signal.c
index 3dd672e2e3016e8d37e71e40b653a36e1f298c0f..8bc0ddaa62198195fca039774c6590f992cd908c 100644
--- a/arch/parisc/kernel/signal.c
+++ b/arch/parisc/kernel/signal.c
@@ -19,7 +19,7 @@
#include <linux/errno.h>
#include <linux/wait.h>
#include <linux/ptrace.h>
-#include <linux/tracehook.h>
+#include <linux/resume_user_mode.h>
#include <linux/unistd.h>
#include <linux/stddef.h>
#include <linux/compat.h>
@@ -585,5 +585,5 @@ void do_notify_resume(struct pt_regs *regs, long in_syscall)
do_signal(regs, in_syscall);
if (test_thread_flag(TIF_NOTIFY_RESUME))
- tracehook_notify_resume(regs);
+ resume_user_mode_work(regs);
}
diff --git a/arch/powerpc/kernel/ptrace/ptrace.c b/arch/powerpc/kernel/ptrace/ptrace.c
index 55742ef1f991bc85f0f6e59d56da4b60bddf8f86..6d5026a9db4fc6e05a14f0662a9166552ef7e739 100644
--- a/arch/powerpc/kernel/ptrace/ptrace.c
+++ b/arch/powerpc/kernel/ptrace/ptrace.c
@@ -16,7 +16,7 @@
*/
#include <linux/regset.h>
-#include <linux/tracehook.h>
+#include <linux/ptrace.h>
#include <linux/audit.h>
#include <linux/context_tracking.h>
#include <linux/syscalls.h>
@@ -262,12 +262,12 @@ long do_syscall_trace_enter(struct pt_regs *regs)
flags = read_thread_flags() & (_TIF_SYSCALL_EMU | _TIF_SYSCALL_TRACE);
if (flags) {
- int rc = tracehook_report_syscall_entry(regs);
+ int rc = ptrace_report_syscall_entry(regs);
if (unlikely(flags & _TIF_SYSCALL_EMU)) {
/*
* A nonzero return code from
- * tracehook_report_syscall_entry() tells us to prevent
+ * ptrace_report_syscall_entry() tells us to prevent
* the syscall execution, but we are not going to
* execute it anyway.
*
@@ -333,7 +333,7 @@ void do_syscall_trace_leave(struct pt_regs *regs)
step = test_thread_flag(TIF_SINGLESTEP);
if (step || test_thread_flag(TIF_SYSCALL_TRACE))
- tracehook_report_syscall_exit(regs, step);
+ ptrace_report_syscall_exit(regs, step);
}
void __init pt_regs_check(void);
diff --git a/arch/powerpc/kernel/signal.c b/arch/powerpc/kernel/signal.c
index b93b87df499d7e5dfd4cf33f48f6c58d569451db..f7f8620663c70fd523e1512dd1007e34330ec2ea 100644
--- a/arch/powerpc/kernel/signal.c
+++ b/arch/powerpc/kernel/signal.c
@@ -9,7 +9,7 @@
* this archive for more details.
*/
-#include <linux/tracehook.h>
+#include <linux/resume_user_mode.h>
#include <linux/signal.h>
#include <linux/uprobes.h>
#include <linux/key.h>
@@ -294,7 +294,7 @@ void do_notify_resume(struct pt_regs *regs, unsigned long thread_info_flags)
}
if (thread_info_flags & _TIF_NOTIFY_RESUME)
- tracehook_notify_resume(regs);
+ resume_user_mode_work(regs);
}
static unsigned long get_tm_stackpointer(struct task_struct *tsk)
diff --git a/arch/riscv/kernel/ptrace.c b/arch/riscv/kernel/ptrace.c
index a892437301538653778c77785a72cb3ffb66b823..793c7da0554b9974a50dbbc8545807c837aac3e4 100644
--- a/arch/riscv/kernel/ptrace.c
+++ b/arch/riscv/kernel/ptrace.c
@@ -17,7 +17,6 @@
#include <linux/regset.h>
#include <linux/sched.h>
#include <linux/sched/task_stack.h>
-#include <linux/tracehook.h>
#define CREATE_TRACE_POINTS
#include <trace/events/syscalls.h>
@@ -241,7 +240,7 @@ long arch_ptrace(struct task_struct *child, long request,
__visible int do_syscall_trace_enter(struct pt_regs *regs)
{
if (test_thread_flag(TIF_SYSCALL_TRACE))
- if (tracehook_report_syscall_entry(regs))
+ if (ptrace_report_syscall_entry(regs))
return -1;
/*
@@ -266,7 +265,7 @@ __visible void do_syscall_trace_exit(struct pt_regs *regs)
audit_syscall_exit(regs);
if (test_thread_flag(TIF_SYSCALL_TRACE))
- tracehook_report_syscall_exit(regs, 0);
+ ptrace_report_syscall_exit(regs, 0);
#ifdef CONFIG_HAVE_SYSCALL_TRACEPOINTS
if (test_thread_flag(TIF_SYSCALL_TRACEPOINT))
diff --git a/arch/riscv/kernel/signal.c b/arch/riscv/kernel/signal.c
index 16da3c3b53a1277af936c56b24b485d2a73bbbd9..9f4e59f80551b81a9ad13801e0854fe4cd720083 100644
--- a/arch/riscv/kernel/signal.c
+++ b/arch/riscv/kernel/signal.c
@@ -9,7 +9,7 @@
#include <linux/signal.h>
#include <linux/uaccess.h>
#include <linux/syscalls.h>
-#include <linux/tracehook.h>
+#include <linux/resume_user_mode.h>
#include <linux/linkage.h>
#include <asm/ucontext.h>
@@ -319,5 +319,5 @@ asmlinkage __visible void do_notify_resume(struct pt_regs *regs,
do_signal(regs);
if (thread_info_flags & _TIF_NOTIFY_RESUME)
- tracehook_notify_resume(regs);
+ resume_user_mode_work(regs);
}
diff --git a/arch/s390/include/asm/entry-common.h b/arch/s390/include/asm/entry-common.h
index 17aead80aadbabab62ae4f7f530cb3d299626e2d..eabab24b71dd76b1b7680aae3eaf7f1bd16a58f3 100644
--- a/arch/s390/include/asm/entry-common.h
+++ b/arch/s390/include/asm/entry-common.h
@@ -5,7 +5,6 @@
#include <linux/sched.h>
#include <linux/audit.h>
#include <linux/randomize_kstack.h>
-#include <linux/tracehook.h>
#include <linux/processor.h>
#include <linux/uaccess.h>
#include <asm/timex.h>
diff --git a/arch/s390/kernel/ptrace.c b/arch/s390/kernel/ptrace.c
index ed3439515bb293151293d8c4313d27f504dfb6ec..53e0209229f87a697d9cb63c0de30ce07cdf027a 100644
--- a/arch/s390/kernel/ptrace.c
+++ b/arch/s390/kernel/ptrace.c
@@ -21,7 +21,6 @@
#include <linux/signal.h>
#include <linux/elf.h>
#include <linux/regset.h>
-#include <linux/tracehook.h>
#include <linux/seccomp.h>
#include <linux/compat.h>
#include <trace/syscall.h>
diff --git a/arch/s390/kernel/signal.c b/arch/s390/kernel/signal.c
index 5ff8d915ec7ae651831330bcb16668994d9e2795..38258f817048d10653f4d803aea0d2d57e104f1a 100644
--- a/arch/s390/kernel/signal.c
+++ b/arch/s390/kernel/signal.c
@@ -25,7 +25,6 @@
#include <linux/tty.h>
#include <linux/personality.h>
#include <linux/binfmts.h>
-#include <linux/tracehook.h>
#include <linux/syscalls.h>
#include <linux/compat.h>
#include <asm/ucontext.h>
@@ -453,7 +452,7 @@ static void handle_signal(struct ksignal *ksig, sigset_t *oldset,
* stack-frames in one go after that.
*/
-void arch_do_signal_or_restart(struct pt_regs *regs, bool has_signal)
+void arch_do_signal_or_restart(struct pt_regs *regs)
{
struct ksignal ksig;
sigset_t *oldset = sigmask_to_save();
@@ -466,7 +465,7 @@ void arch_do_signal_or_restart(struct pt_regs *regs, bool has_signal)
current->thread.system_call =
test_pt_regs_flag(regs, PIF_SYSCALL) ? regs->int_code : 0;
- if (has_signal && get_signal(&ksig)) {
+ if (get_signal(&ksig)) {
/* Whee! Actually deliver the signal. */
if (current->thread.system_call) {
regs->int_code = current->thread.system_call;
diff --git a/arch/sh/kernel/ptrace_32.c b/arch/sh/kernel/ptrace_32.c
index 5281685f6ad1f728b3ac8c577aaa54a1c7f99fc2..d417988d9770f0994cf7574e2778935aa5cfa3ef 100644
--- a/arch/sh/kernel/ptrace_32.c
+++ b/arch/sh/kernel/ptrace_32.c
@@ -20,7 +20,6 @@
#include <linux/io.h>
#include <linux/audit.h>
#include <linux/seccomp.h>
-#include <linux/tracehook.h>
#include <linux/elf.h>
#include <linux/regset.h>
#include <linux/hw_breakpoint.h>
@@ -456,7 +455,7 @@ long arch_ptrace(struct task_struct *child, long request,
asmlinkage long do_syscall_trace_enter(struct pt_regs *regs)
{
if (test_thread_flag(TIF_SYSCALL_TRACE) &&
- tracehook_report_syscall_entry(regs)) {
+ ptrace_report_syscall_entry(regs)) {
regs->regs[0] = -ENOSYS;
return -1;
}
@@ -484,5 +483,5 @@ asmlinkage void do_syscall_trace_leave(struct pt_regs *regs)
step = test_thread_flag(TIF_SINGLESTEP);
if (step || test_thread_flag(TIF_SYSCALL_TRACE))
- tracehook_report_syscall_exit(regs, step);
+ ptrace_report_syscall_exit(regs, step);
}
diff --git a/arch/sh/kernel/signal_32.c b/arch/sh/kernel/signal_32.c
index dd3092911efad74200882e1192aa89fd9fe97bdd..90f495d35db29a7e7b139d4541eb20fe053f02ed 100644
--- a/arch/sh/kernel/signal_32.c
+++ b/arch/sh/kernel/signal_32.c
@@ -25,7 +25,7 @@
#include <linux/personality.h>
#include <linux/binfmts.h>
#include <linux/io.h>
-#include <linux/tracehook.h>
+#include <linux/resume_user_mode.h>
#include <asm/ucontext.h>
#include <linux/uaccess.h>
#include <asm/cacheflush.h>
@@ -503,5 +503,5 @@ asmlinkage void do_notify_resume(struct pt_regs *regs, unsigned int save_r0,
do_signal(regs, save_r0);
if (thread_info_flags & _TIF_NOTIFY_RESUME)
- tracehook_notify_resume(regs);
+ resume_user_mode_work(regs);
}
diff --git a/arch/sparc/kernel/ptrace_32.c b/arch/sparc/kernel/ptrace_32.c
index 5318174a0268c103236b4eb6d7675bae86916060..e7db48acb838b45e98c9a86f18d38b69b9c65947 100644
--- a/arch/sparc/kernel/ptrace_32.c
+++ b/arch/sparc/kernel/ptrace_32.c
@@ -21,7 +21,6 @@
#include <linux/signal.h>
#include <linux/regset.h>
#include <linux/elf.h>
-#include <linux/tracehook.h>
#include <linux/uaccess.h>
#include <asm/cacheflush.h>
@@ -439,9 +438,9 @@ asmlinkage int syscall_trace(struct pt_regs *regs, int syscall_exit_p)
if (test_thread_flag(TIF_SYSCALL_TRACE)) {
if (syscall_exit_p)
- tracehook_report_syscall_exit(regs, 0);
+ ptrace_report_syscall_exit(regs, 0);
else
- ret = tracehook_report_syscall_entry(regs);
+ ret = ptrace_report_syscall_entry(regs);
}
return ret;
diff --git a/arch/sparc/kernel/ptrace_64.c b/arch/sparc/kernel/ptrace_64.c
index 2b92155db8a5fc15314e6adba00a867edb4c18d3..86a7eb5c27babfae4a9aadc3b48abdb82a14cd50 100644
--- a/arch/sparc/kernel/ptrace_64.c
+++ b/arch/sparc/kernel/ptrace_64.c
@@ -25,7 +25,6 @@
#include <linux/audit.h>
#include <linux/signal.h>
#include <linux/regset.h>
-#include <linux/tracehook.h>
#include <trace/syscall.h>
#include <linux/compat.h>
#include <linux/elf.h>
@@ -1095,7 +1094,7 @@ asmlinkage int syscall_trace_enter(struct pt_regs *regs)
user_exit();
if (test_thread_flag(TIF_SYSCALL_TRACE))
- ret = tracehook_report_syscall_entry(regs);
+ ret = ptrace_report_syscall_entry(regs);
if (unlikely(test_thread_flag(TIF_SYSCALL_TRACEPOINT)))
trace_sys_enter(regs, regs->u_regs[UREG_G1]);
@@ -1118,7 +1117,7 @@ asmlinkage void syscall_trace_leave(struct pt_regs *regs)
trace_sys_exit(regs, regs->u_regs[UREG_I0]);
if (test_thread_flag(TIF_SYSCALL_TRACE))
- tracehook_report_syscall_exit(regs, 0);
+ ptrace_report_syscall_exit(regs, 0);
if (test_thread_flag(TIF_NOHZ))
user_enter();
diff --git a/arch/sparc/kernel/signal32.c b/arch/sparc/kernel/signal32.c
index 6cc124a3bb98a0394ef81d07ba7d1d4b01ca8787..f9fe502b81c65c0818bdd3749dea6434ac1c1ce3 100644
--- a/arch/sparc/kernel/signal32.c
+++ b/arch/sparc/kernel/signal32.c
@@ -20,7 +20,6 @@
#include <linux/binfmts.h>
#include <linux/compat.h>
#include <linux/bitops.h>
-#include <linux/tracehook.h>
#include <linux/uaccess.h>
#include <asm/ptrace.h>
diff --git a/arch/sparc/kernel/signal_32.c b/arch/sparc/kernel/signal_32.c
index 74f80443b195fa400964f9491982934dd5c6e6a1..89b93c7136e708581a916cf96063faafb9349e3e 100644
--- a/arch/sparc/kernel/signal_32.c
+++ b/arch/sparc/kernel/signal_32.c
@@ -19,7 +19,7 @@
#include <linux/smp.h>
#include <linux/binfmts.h> /* do_coredum */
#include <linux/bitops.h>
-#include <linux/tracehook.h>
+#include <linux/resume_user_mode.h>
#include <linux/uaccess.h>
#include <asm/ptrace.h>
@@ -524,7 +524,7 @@ void do_notify_resume(struct pt_regs *regs, unsigned long orig_i0,
if (thread_info_flags & (_TIF_SIGPENDING | _TIF_NOTIFY_SIGNAL))
do_signal(regs, orig_i0);
if (thread_info_flags & _TIF_NOTIFY_RESUME)
- tracehook_notify_resume(regs);
+ resume_user_mode_work(regs);
}
asmlinkage int do_sys_sigstack(struct sigstack __user *ssptr,
diff --git a/arch/sparc/kernel/signal_64.c b/arch/sparc/kernel/signal_64.c
index 2a78d2af1265525f27a9d08ad88dc23b839968b5..8b9fc76cd3e026c1e2f76256f2b69d820c130399 100644
--- a/arch/sparc/kernel/signal_64.c
+++ b/arch/sparc/kernel/signal_64.c
@@ -15,7 +15,7 @@
#include <linux/errno.h>
#include <linux/wait.h>
#include <linux/ptrace.h>
-#include <linux/tracehook.h>
+#include <linux/resume_user_mode.h>
#include <linux/unistd.h>
#include <linux/mm.h>
#include <linux/tty.h>
@@ -552,7 +552,7 @@ void do_notify_resume(struct pt_regs *regs, unsigned long orig_i0, unsigned long
if (thread_info_flags & (_TIF_SIGPENDING | _TIF_NOTIFY_SIGNAL))
do_signal(regs, orig_i0);
if (thread_info_flags & _TIF_NOTIFY_RESUME)
- tracehook_notify_resume(regs);
+ resume_user_mode_work(regs);
user_enter();
}
diff --git a/arch/um/kernel/process.c b/arch/um/kernel/process.c
index 4a420778ed87bb1ef6cabab470e51f0f540e231c..80504680be084f4a7caa7c66b294fc1d0447671c 100644
--- a/arch/um/kernel/process.c
+++ b/arch/um/kernel/process.c
@@ -23,7 +23,7 @@
#include <linux/seq_file.h>
#include <linux/tick.h>
#include <linux/threads.h>
-#include <linux/tracehook.h>
+#include <linux/resume_user_mode.h>
#include <asm/current.h>
#include <asm/mmu_context.h>
#include <linux/uaccess.h>
@@ -104,7 +104,7 @@ void interrupt_end(void)
test_thread_flag(TIF_NOTIFY_SIGNAL))
do_signal(regs);
if (test_thread_flag(TIF_NOTIFY_RESUME))
- tracehook_notify_resume(regs);
+ resume_user_mode_work(regs);
}
int get_current_pid(void)
diff --git a/arch/um/kernel/ptrace.c b/arch/um/kernel/ptrace.c
index b425f47bddbb3f22465efe4534d1fb5104d75ee8..bfaf6ab1ac037b96021360601199f36e6518012a 100644
--- a/arch/um/kernel/ptrace.c
+++ b/arch/um/kernel/ptrace.c
@@ -6,7 +6,6 @@
#include <linux/audit.h>
#include <linux/ptrace.h>
#include <linux/sched.h>
-#include <linux/tracehook.h>
#include <linux/uaccess.h>
#include <asm/ptrace-abi.h>
@@ -135,7 +134,7 @@ int syscall_trace_enter(struct pt_regs *regs)
if (!test_thread_flag(TIF_SYSCALL_TRACE))
return 0;
- return tracehook_report_syscall_entry(regs);
+ return ptrace_report_syscall_entry(regs);
}
void syscall_trace_leave(struct pt_regs *regs)
@@ -151,7 +150,7 @@ void syscall_trace_leave(struct pt_regs *regs)
if (!test_thread_flag(TIF_SYSCALL_TRACE))
return;
- tracehook_report_syscall_exit(regs, 0);
+ ptrace_report_syscall_exit(regs, 0);
/* force do_signal() --> is_syscall() */
if (ptraced & PT_PTRACED)
set_thread_flag(TIF_SIGPENDING);
diff --git a/arch/x86/kernel/ptrace.c b/arch/x86/kernel/ptrace.c
index 8d2f2f995539d78085c614334d915970bdde72da..98d10ef605717820e802540b86fdb5c1b051bd38 100644
--- a/arch/x86/kernel/ptrace.c
+++ b/arch/x86/kernel/ptrace.c
@@ -13,7 +13,6 @@
#include <linux/errno.h>
#include <linux/slab.h>
#include <linux/ptrace.h>
-#include <linux/tracehook.h>
#include <linux/user.h>
#include <linux/elf.h>
#include <linux/security.h>
diff --git a/arch/x86/kernel/signal.c b/arch/x86/kernel/signal.c
index ec71e06ae364b864335b585d8515866d86eb9b09..e439eb14325fa131057e93426e5f78aacad96262 100644
--- a/arch/x86/kernel/signal.c
+++ b/arch/x86/kernel/signal.c
@@ -18,7 +18,6 @@
#include <linux/kstrtox.h>
#include <linux/errno.h>
#include <linux/wait.h>
-#include <linux/tracehook.h>
#include <linux/unistd.h>
#include <linux/stddef.h>
#include <linux/personality.h>
@@ -861,11 +860,11 @@ static inline unsigned long get_nr_restart_syscall(const struct pt_regs *regs)
* want to handle. Thus you cannot kill init even with a SIGKILL even by
* mistake.
*/
-void arch_do_signal_or_restart(struct pt_regs *regs, bool has_signal)
+void arch_do_signal_or_restart(struct pt_regs *regs)
{
struct ksignal ksig;
- if (has_signal && get_signal(&ksig)) {
+ if (get_signal(&ksig)) {
/* Whee! Actually deliver the signal. */
handle_signal(&ksig, regs);
return;
diff --git a/arch/x86/mm/tlb.c b/arch/x86/mm/tlb.c
index a6cf56a149393f72e3d203fc77a539ad8da9bcef..6eb4d91d5365563024f44d8cb92f4df599ef1a0e 100644
--- a/arch/x86/mm/tlb.c
+++ b/arch/x86/mm/tlb.c
@@ -9,6 +9,7 @@
#include <linux/cpu.h>
#include <linux/debugfs.h>
#include <linux/sched/smt.h>
+#include <linux/task_work.h>
#include <asm/tlbflush.h>
#include <asm/mmu_context.h>
diff --git a/arch/xtensa/kernel/ptrace.c b/arch/xtensa/kernel/ptrace.c
index bb3f4797d212b0fa432b087fab00ed6959de7c04..323c678a691ff6dc5dfd97bb340daadd0856b6c2 100644
--- a/arch/xtensa/kernel/ptrace.c
+++ b/arch/xtensa/kernel/ptrace.c
@@ -26,7 +26,6 @@
#include <linux/security.h>
#include <linux/signal.h>
#include <linux/smp.h>
-#include <linux/tracehook.h>
#include <linux/uaccess.h>
#define CREATE_TRACE_POINTS
@@ -550,7 +549,7 @@ int do_syscall_trace_enter(struct pt_regs *regs)
regs->areg[2] = -ENOSYS;
if (test_thread_flag(TIF_SYSCALL_TRACE) &&
- tracehook_report_syscall_entry(regs)) {
+ ptrace_report_syscall_entry(regs)) {
regs->areg[2] = -ENOSYS;
regs->syscall = NO_SYSCALL;
return 0;
@@ -583,5 +582,5 @@ void do_syscall_trace_leave(struct pt_regs *regs)
step = test_thread_flag(TIF_SINGLESTEP);
if (step || test_thread_flag(TIF_SYSCALL_TRACE))
- tracehook_report_syscall_exit(regs, step);
+ ptrace_report_syscall_exit(regs, step);
}
diff --git a/arch/xtensa/kernel/signal.c b/arch/xtensa/kernel/signal.c
index f6c949895b3eb197bcf05b6b1610f860d4304446..6f68649e86ba5af13bc130a03ba5c79e1b7b561e 100644
--- a/arch/xtensa/kernel/signal.c
+++ b/arch/xtensa/kernel/signal.c
@@ -19,7 +19,7 @@
#include <linux/errno.h>
#include <linux/ptrace.h>
#include <linux/personality.h>
-#include <linux/tracehook.h>
+#include <linux/resume_user_mode.h>
#include <linux/sched/task_stack.h>
#include <asm/ucontext.h>
@@ -511,5 +511,5 @@ void do_notify_resume(struct pt_regs *regs)
do_signal(regs);
if (test_thread_flag(TIF_NOTIFY_RESUME))
- tracehook_notify_resume(regs);
+ resume_user_mode_work(regs);
}
diff --git a/block/blk-cgroup.c b/block/blk-cgroup.c
index d53b0d69dd7363df56ea0d30a908f852a8e1e15d..0430926426fe3401d0493e193f9c5587c3634add 100644
--- a/block/blk-cgroup.c
+++ b/block/blk-cgroup.c
@@ -26,7 +26,7 @@
#include <linux/delay.h>
#include <linux/atomic.h>
#include <linux/ctype.h>
-#include <linux/tracehook.h>
+#include <linux/resume_user_mode.h>
#include <linux/psi.h>
#include <linux/part_stat.h>
#include "blk.h"
diff --git a/fs/coredump.c b/fs/coredump.c
index 7ed7d601e5e002e7de93445d1a8980e23205eb49..ebc43f960b64566055b38c9cefd6f2b6f985ab78 100644
--- a/fs/coredump.c
+++ b/fs/coredump.c
@@ -31,7 +31,6 @@
#include <linux/tsacct_kern.h>
#include <linux/cn_proc.h>
#include <linux/audit.h>
-#include <linux/tracehook.h>
#include <linux/kmod.h>
#include <linux/fsnotify.h>
#include <linux/fs_struct.h>
diff --git a/fs/exec.c b/fs/exec.c
index a39108c1190a3f5ca95a128990d4128a4ce78e4e..e3e55d5e0be1f6dd3f7c42983d2c124c44bf8f0f 100644
--- a/fs/exec.c
+++ b/fs/exec.c
@@ -56,7 +56,6 @@
#include <linux/tsacct_kern.h>
#include <linux/cn_proc.h>
#include <linux/audit.h>
-#include <linux/tracehook.h>
#include <linux/kmod.h>
#include <linux/fsnotify.h>
#include <linux/fs_struct.h>
diff --git a/fs/io-wq.c b/fs/io-wq.c
index 5b93fa67d34644f1a2a96a5128e3a338fe81a59f..32aeb2c581c580fa26cf5264b332beb487b0d47f 100644
--- a/fs/io-wq.c
+++ b/fs/io-wq.c
@@ -13,7 +13,7 @@
#include <linux/slab.h>
#include <linux/rculist_nulls.h>
#include <linux/cpu.h>
-#include <linux/tracehook.h>
+#include <linux/task_work.h>
#include <linux/audit.h>
#include <uapi/linux/io_uring.h>
@@ -522,7 +522,9 @@ static bool io_flush_signals(void)
{
if (unlikely(test_thread_flag(TIF_NOTIFY_SIGNAL))) {
__set_current_state(TASK_RUNNING);
- tracehook_notify_signal();
+ clear_notify_signal();
+ if (task_work_pending(current))
+ task_work_run();
return true;
}
return false;
diff --git a/fs/io_uring.c b/fs/io_uring.c
index 59e54a6854b7ef24a4f185ed995be1d5ab49f5d3..b94d57c1b0e5fc68bb7ece5419b33d8ae5fa6d92 100644
--- a/fs/io_uring.c
+++ b/fs/io_uring.c
@@ -79,7 +79,6 @@
#include <linux/task_work.h>
#include <linux/pagemap.h>
#include <linux/io_uring.h>
-#include <linux/tracehook.h>
#include <linux/audit.h>
#include <linux/security.h>
@@ -2750,9 +2749,11 @@ static inline unsigned int io_sqring_entries(struct io_ring_ctx *ctx)
static inline bool io_run_task_work(void)
{
- if (test_thread_flag(TIF_NOTIFY_SIGNAL) || current->task_works) {
+ if (test_thread_flag(TIF_NOTIFY_SIGNAL) || task_work_pending(current)) {
__set_current_state(TASK_RUNNING);
- tracehook_notify_signal();
+ clear_notify_signal();
+ if (task_work_pending(current))
+ task_work_run();
return true;
}
@@ -8041,7 +8042,7 @@ static int io_sq_thread(void *data)
}
prepare_to_wait(&sqd->wait, &wait, TASK_INTERRUPTIBLE);
- if (!io_sqd_events_pending(sqd) && !current->task_works) {
+ if (!io_sqd_events_pending(sqd) && !task_work_pending(current)) {
bool needs_sched = true;
list_for_each_entry(ctx, &sqd->ctx_list, sqd_list) {
@@ -11096,7 +11097,7 @@ static __cold void __io_uring_show_fdinfo(struct io_ring_ctx *ctx,
hlist_for_each_entry(req, list, hash_node)
seq_printf(m, " op=%d, task_works=%d\n", req->opcode,
- req->task->task_works != NULL);
+ task_work_pending(req->task));
}
seq_puts(m, "CqOverflowList:\n");
diff --git a/fs/proc/array.c b/fs/proc/array.c
index fd8b0c12b2cbefc68988e9bcb6c0a0dd61848d2f..eb815759842ce45e3ba200e5ad333fa325db1403 100644
--- a/fs/proc/array.c
+++ b/fs/proc/array.c
@@ -88,7 +88,6 @@
#include <linux/pid_namespace.h>
#include <linux/prctl.h>
#include <linux/ptrace.h>
-#include <linux/tracehook.h>
#include <linux/string_helpers.h>
#include <linux/user_namespace.h>
#include <linux/fs_struct.h>
diff --git a/fs/proc/base.c b/fs/proc/base.c
index 76bf1aa3cfe88d5da2b9fcdf87be0f19a1ce8b66..c1031843cc6aa43a13eb4e0fc5b1a2e26d9eed93 100644
--- a/fs/proc/base.c
+++ b/fs/proc/base.c
@@ -74,7 +74,6 @@
#include <linux/mount.h>
#include <linux/security.h>
#include <linux/ptrace.h>
-#include <linux/tracehook.h>
#include <linux/printk.h>
#include <linux/cache.h>
#include <linux/cgroup.h>
diff --git a/include/asm-generic/syscall.h b/include/asm-generic/syscall.h
index 81695eb02a129c186ceeffd458925baf810235ba..5a80fe728dc8b6e19a615b87c0111fabc63bc6dc 100644
--- a/include/asm-generic/syscall.h
+++ b/include/asm-generic/syscall.h
@@ -44,7 +44,7 @@ int syscall_get_nr(struct task_struct *task, struct pt_regs *regs);
*
* It's only valid to call this when @task is stopped for system
* call exit tracing (due to %SYSCALL_WORK_SYSCALL_TRACE or
- * %SYSCALL_WORK_SYSCALL_AUDIT), after tracehook_report_syscall_entry()
+ * %SYSCALL_WORK_SYSCALL_AUDIT), after ptrace_report_syscall_entry()
* returned nonzero to prevent the system call from taking place.
*
* This rolls back the register state in @regs so it's as if the
diff --git a/include/linux/entry-common.h b/include/linux/entry-common.h
index 141952f4fee87ea0d3f41d0343eb437253ab6510..ab78bd4c2eb0fa4ced448083d09dfb096d005bf3 100644
--- a/include/linux/entry-common.h
+++ b/include/linux/entry-common.h
@@ -3,7 +3,7 @@
#define __LINUX_ENTRYCOMMON_H
#include <linux/static_call_types.h>
-#include <linux/tracehook.h>
+#include <linux/ptrace.h>
#include <linux/syscalls.h>
#include <linux/seccomp.h>
#include <linux/sched.h>
@@ -79,26 +79,6 @@ static __always_inline void arch_check_user_regs(struct pt_regs *regs);
static __always_inline void arch_check_user_regs(struct pt_regs *regs) {}
#endif
-/**
- * arch_syscall_enter_tracehook - Wrapper around tracehook_report_syscall_entry()
- * @regs: Pointer to currents pt_regs
- *
- * Returns: 0 on success or an error code to skip the syscall.
- *
- * Defaults to tracehook_report_syscall_entry(). Can be replaced by
- * architecture specific code.
- *
- * Invoked from syscall_enter_from_user_mode()
- */
-static inline __must_check int arch_syscall_enter_tracehook(struct pt_regs *regs);
-
-#ifndef arch_syscall_enter_tracehook
-static inline __must_check int arch_syscall_enter_tracehook(struct pt_regs *regs)
-{
- return tracehook_report_syscall_entry(regs);
-}
-#endif
-
/**
* enter_from_user_mode - Establish state when coming from user mode
*
@@ -157,7 +137,7 @@ void syscall_enter_from_user_mode_prepare(struct pt_regs *regs);
* It handles the following work items:
*
* 1) syscall_work flag dependent invocations of
- * arch_syscall_enter_tracehook(), __secure_computing(), trace_sys_enter()
+ * ptrace_report_syscall_entry(), __secure_computing(), trace_sys_enter()
* 2) Invocation of audit_syscall_entry()
*/
long syscall_enter_from_user_mode_work(struct pt_regs *regs, long syscall);
@@ -277,26 +257,7 @@ static __always_inline void arch_exit_to_user_mode(void) { }
*
* Invoked from exit_to_user_mode_loop().
*/
-void arch_do_signal_or_restart(struct pt_regs *regs, bool has_signal);
-
-/**
- * arch_syscall_exit_tracehook - Wrapper around tracehook_report_syscall_exit()
- * @regs: Pointer to currents pt_regs
- * @step: Indicator for single step
- *
- * Defaults to tracehook_report_syscall_exit(). Can be replaced by
- * architecture specific code.
- *
- * Invoked from syscall_exit_to_user_mode()
- */
-static inline void arch_syscall_exit_tracehook(struct pt_regs *regs, bool step);
-
-#ifndef arch_syscall_exit_tracehook
-static inline void arch_syscall_exit_tracehook(struct pt_regs *regs, bool step)
-{
- tracehook_report_syscall_exit(regs, step);
-}
-#endif
+void arch_do_signal_or_restart(struct pt_regs *regs);
/**
* exit_to_user_mode - Fixup state when exiting to user mode
@@ -347,7 +308,7 @@ void syscall_exit_to_user_mode_work(struct pt_regs *regs);
* - rseq syscall exit
* - audit
* - syscall tracing
- * - tracehook (single stepping)
+ * - ptrace (single stepping)
*
* 2) Preparatory work
* - Exit to user mode loop (common TIF handling). Invokes
diff --git a/include/linux/entry-kvm.h b/include/linux/entry-kvm.h
index 07c878d6e323ed0a87eb5033013d3c7755362844..6813171afccb234413cb2fbf18b9cd01e1adbd76 100644
--- a/include/linux/entry-kvm.h
+++ b/include/linux/entry-kvm.h
@@ -3,7 +3,7 @@
#define __LINUX_ENTRYKVM_H
#include <linux/static_call_types.h>
-#include <linux/tracehook.h>
+#include <linux/resume_user_mode.h>
#include <linux/syscalls.h>
#include <linux/seccomp.h>
#include <linux/sched.h>
diff --git a/include/linux/posix-timers.h b/include/linux/posix-timers.h
index 9cf126c3b27fb63d69b78f791c99025186434590..2c6e99ca48afcabb14c1800ff9ac4eb24c6edf7c 100644
--- a/include/linux/posix-timers.h
+++ b/include/linux/posix-timers.h
@@ -6,7 +6,6 @@
#include <linux/list.h>
#include <linux/alarmtimer.h>
#include <linux/timerqueue.h>
-#include <linux/task_work.h>
struct kernel_siginfo;
struct task_struct;
diff --git a/include/linux/ptrace.h b/include/linux/ptrace.h
index 8aee2945ff08fb6132a6c9b52da533a3d24cecc2..15b3d176b6b4d7cf3410b7384121532e44d7c63d 100644
--- a/include/linux/ptrace.h
+++ b/include/linux/ptrace.h
@@ -60,7 +60,7 @@ extern int ptrace_writedata(struct task_struct *tsk, char __user *src, unsigned
extern void ptrace_disable(struct task_struct *);
extern int ptrace_request(struct task_struct *child, long request,
unsigned long addr, unsigned long data);
-extern void ptrace_notify(int exit_code);
+extern int ptrace_notify(int exit_code, unsigned long message);
extern void __ptrace_link(struct task_struct *child,
struct task_struct *new_parent,
const struct cred *ptracer_cred);
@@ -155,8 +155,7 @@ static inline bool ptrace_event_enabled(struct task_struct *task, int event)
static inline void ptrace_event(int event, unsigned long message)
{
if (unlikely(ptrace_event_enabled(current, event))) {
- current->ptrace_message = message;
- ptrace_notify((event << 8) | SIGTRAP);
+ ptrace_notify((event << 8) | SIGTRAP, message);
} else if (event == PTRACE_EVENT_EXEC) {
/* legacy EXEC report via SIGTRAP */
if ((current->ptrace & (PT_PTRACED|PT_SEIZED)) == PT_PTRACED)
@@ -413,4 +412,80 @@ static inline void user_single_step_report(struct pt_regs *regs)
extern int task_current_syscall(struct task_struct *target, struct syscall_info *info);
extern void sigaction_compat_abi(struct k_sigaction *act, struct k_sigaction *oact);
+
+/*
+ * ptrace report for syscall entry and exit looks identical.
+ */
+static inline int ptrace_report_syscall(unsigned long message)
+{
+ int ptrace = current->ptrace;
+ int signr;
+
+ if (!(ptrace & PT_PTRACED))
+ return 0;
+
+ signr = ptrace_notify(SIGTRAP | ((ptrace & PT_TRACESYSGOOD) ? 0x80 : 0),
+ message);
+
+ /*
+ * this isn't the same as continuing with a signal, but it will do
+ * for normal use. strace only continues with a signal if the
+ * stopping signal is not SIGTRAP. -brl
+ */
+ if (signr)
+ send_sig(signr, current, 1);
+
+ return fatal_signal_pending(current);
+}
+
+/**
+ * ptrace_report_syscall_entry - task is about to attempt a system call
+ * @regs: user register state of current task
+ *
+ * This will be called if %SYSCALL_WORK_SYSCALL_TRACE or
+ * %SYSCALL_WORK_SYSCALL_EMU have been set, when the current task has just
+ * entered the kernel for a system call. Full user register state is
+ * available here. Changing the values in @regs can affect the system
+ * call number and arguments to be tried. It is safe to block here,
+ * preventing the system call from beginning.
+ *
+ * Returns zero normally, or nonzero if the calling arch code should abort
+ * the system call. That must prevent normal entry so no system call is
+ * made. If @task ever returns to user mode after this, its register state
+ * is unspecified, but should be something harmless like an %ENOSYS error
+ * return. It should preserve enough information so that syscall_rollback()
+ * can work (see asm-generic/syscall.h).
+ *
+ * Called without locks, just after entering kernel mode.
+ */
+static inline __must_check int ptrace_report_syscall_entry(
+ struct pt_regs *regs)
+{
+ return ptrace_report_syscall(PTRACE_EVENTMSG_SYSCALL_ENTRY);
+}
+
+/**
+ * ptrace_report_syscall_exit - task has just finished a system call
+ * @regs: user register state of current task
+ * @step: nonzero if simulating single-step or block-step
+ *
+ * This will be called if %SYSCALL_WORK_SYSCALL_TRACE has been set, when
+ * the current task has just finished an attempted system call. Full
+ * user register state is available here. It is safe to block here,
+ * preventing signals from being processed.
+ *
+ * If @step is nonzero, this report is also in lieu of the normal
+ * trap that would follow the system call instruction because
+ * user_enable_block_step() or user_enable_single_step() was used.
+ * In this case, %SYSCALL_WORK_SYSCALL_TRACE might not be set.
+ *
+ * Called without locks, just before checking for pending signals.
+ */
+static inline void ptrace_report_syscall_exit(struct pt_regs *regs, int step)
+{
+ if (step)
+ user_single_step_report(regs);
+ else
+ ptrace_report_syscall(PTRACE_EVENTMSG_SYSCALL_EXIT);
+}
#endif
diff --git a/include/linux/resume_user_mode.h b/include/linux/resume_user_mode.h
new file mode 100644
index 0000000000000000000000000000000000000000..28518945444968fed623838f4028dca96736a9f7
--- /dev/null
+++ b/include/linux/resume_user_mode.h
@@ -0,0 +1,64 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+#ifndef LINUX_RESUME_USER_MODE_H
+#define LINUX_RESUME_USER_MODE_H
+
+#include <linux/sched.h>
+#include <linux/task_work.h>
+#include <linux/memcontrol.h>
+#include <linux/blk-cgroup.h>
+
+/**
+ * set_notify_resume - cause resume_user_mode_work() to be called
+ * @task: task that will call resume_user_mode_work()
+ *
+ * Calling this arranges that @task will call resume_user_mode_work()
+ * before returning to user mode. If it's already running in user mode,
+ * it will enter the kernel and call resume_user_mode_work() soon.
+ * If it's blocked, it will not be woken.
+ */
+static inline void set_notify_resume(struct task_struct *task)
+{
+ if (!test_and_set_tsk_thread_flag(task, TIF_NOTIFY_RESUME))
+ kick_process(task);
+}
+
+
+/**
+ * resume_user_mode_work - Perform work before returning to user mode
+ * @regs: user-mode registers of @current task
+ *
+ * This is called when %TIF_NOTIFY_RESUME has been set. Now we are
+ * about to return to user mode, and the user state in @regs can be
+ * inspected or adjusted. The caller in arch code has cleared
+ * %TIF_NOTIFY_RESUME before the call. If the flag gets set again
+ * asynchronously, this will be called again before we return to
+ * user mode.
+ *
+ * Called without locks.
+ */
+static inline void resume_user_mode_work(struct pt_regs *regs)
+{
+ clear_thread_flag(TIF_NOTIFY_RESUME);
+ /*
+ * This barrier pairs with task_work_add()->set_notify_resume() after
+ * hlist_add_head(task->task_works);
+ */
+ smp_mb__after_atomic();
+ if (unlikely(task_work_pending(current)))
+ task_work_run();
+
+#ifdef CONFIG_KEYS_REQUEST_CACHE
+ if (unlikely(current->cached_requested_key)) {
+ key_put(current->cached_requested_key);
+ current->cached_requested_key = NULL;
+ }
+#endif
+
+ mem_cgroup_handle_over_high();
+ blkcg_maybe_throttle_current();
+
+ rseq_handle_notify_resume(NULL, regs);
+}
+
+#endif /* LINUX_RESUME_USER_MODE_H */
diff --git a/include/linux/sched/signal.h b/include/linux/sched/signal.h
index b6ecb9fc4cd2d76123aa69c00995844875e689ea..3c8b34876744bda628be4c1084e39fc06dbdb938 100644
--- a/include/linux/sched/signal.h
+++ b/include/linux/sched/signal.h
@@ -349,6 +349,23 @@ extern void sigqueue_free(struct sigqueue *);
extern int send_sigqueue(struct sigqueue *, struct pid *, enum pid_type);
extern int do_sigaction(int, struct k_sigaction *, struct k_sigaction *);
+static inline void clear_notify_signal(void)
+{
+ clear_thread_flag(TIF_NOTIFY_SIGNAL);
+ smp_mb__after_atomic();
+}
+
+/*
+ * Called to break out of interruptible wait loops, and enter the
+ * exit_to_user_mode_loop().
+ */
+static inline void set_notify_signal(struct task_struct *task)
+{
+ if (!test_and_set_tsk_thread_flag(task, TIF_NOTIFY_SIGNAL) &&
+ !wake_up_state(task, TASK_INTERRUPTIBLE))
+ kick_process(task);
+}
+
static inline int restart_syscall(void)
{
set_tsk_thread_flag(current, TIF_SIGPENDING);
diff --git a/include/linux/task_work.h b/include/linux/task_work.h
index 5b8a93f288bb4d924dcead4cb79b3754e0fecad4..897494b597ba4f488784fd847c1a68752f3a49aa 100644
--- a/include/linux/task_work.h
+++ b/include/linux/task_work.h
@@ -19,6 +19,11 @@ enum task_work_notify_mode {
TWA_SIGNAL,
};
+static inline bool task_work_pending(struct task_struct *task)
+{
+ return READ_ONCE(task->task_works);
+}
+
int task_work_add(struct task_struct *task, struct callback_head *twork,
enum task_work_notify_mode mode);
diff --git a/include/linux/tracehook.h b/include/linux/tracehook.h
deleted file mode 100644
index 88c007ab5ebc777c2823d5405e354f5a8893dab5..0000000000000000000000000000000000000000
--- a/include/linux/tracehook.h
+++ /dev/null
@@ -1,226 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0-only */
-/*
- * Tracing hooks
- *
- * Copyright (C) 2008-2009 Red Hat, Inc. All rights reserved.
- *
- * This file defines hook entry points called by core code where
- * user tracing/debugging support might need to do something. These
- * entry points are called tracehook_*(). Each hook declared below
- * has a detailed kerneldoc comment giving the context (locking et
- * al) from which it is called, and the meaning of its return value.
- *
- * Each function here typically has only one call site, so it is ok
- * to have some nontrivial tracehook_*() inlines. In all cases, the
- * fast path when no tracing is enabled should be very short.
- *
- * The purpose of this file and the tracehook_* layer is to consolidate
- * the interface that the kernel core and arch code uses to enable any
- * user debugging or tracing facility (such as ptrace). The interfaces
- * here are carefully documented so that maintainers of core and arch
- * code do not need to think about the implementation details of the
- * tracing facilities. Likewise, maintainers of the tracing code do not
- * need to understand all the calling core or arch code in detail, just
- * documented circumstances of each call, such as locking conditions.
- *
- * If the calling core code changes so that locking is different, then
- * it is ok to change the interface documented here. The maintainer of
- * core code changing should notify the maintainers of the tracing code
- * that they need to work out the change.
- *
- * Some tracehook_*() inlines take arguments that the current tracing
- * implementations might not necessarily use. These function signatures
- * are chosen to pass in all the information that is on hand in the
- * caller and might conceivably be relevant to a tracer, so that the
- * core code won't have to be updated when tracing adds more features.
- * If a call site changes so that some of those parameters are no longer
- * already on hand without extra work, then the tracehook_* interface
- * can change so there is no make-work burden on the core code. The
- * maintainer of core code changing should notify the maintainers of the
- * tracing code that they need to work out the change.
- */
-
-#ifndef _LINUX_TRACEHOOK_H
-#define _LINUX_TRACEHOOK_H 1
-
-#include <linux/sched.h>
-#include <linux/ptrace.h>
-#include <linux/security.h>
-#include <linux/task_work.h>
-#include <linux/memcontrol.h>
-#include <linux/blk-cgroup.h>
-struct linux_binprm;
-
-/*
- * ptrace report for syscall entry and exit looks identical.
- */
-static inline int ptrace_report_syscall(unsigned long message)
-{
- int ptrace = current->ptrace;
-
- if (!(ptrace & PT_PTRACED))
- return 0;
-
- current->ptrace_message = message;
- ptrace_notify(SIGTRAP | ((ptrace & PT_TRACESYSGOOD) ? 0x80 : 0));
-
- /*
- * this isn't the same as continuing with a signal, but it will do
- * for normal use. strace only continues with a signal if the
- * stopping signal is not SIGTRAP. -brl
- */
- if (current->exit_code) {
- send_sig(current->exit_code, current, 1);
- current->exit_code = 0;
- }
-
- current->ptrace_message = 0;
- return fatal_signal_pending(current);
-}
-
-/**
- * tracehook_report_syscall_entry - task is about to attempt a system call
- * @regs: user register state of current task
- *
- * This will be called if %SYSCALL_WORK_SYSCALL_TRACE or
- * %SYSCALL_WORK_SYSCALL_EMU have been set, when the current task has just
- * entered the kernel for a system call. Full user register state is
- * available here. Changing the values in @regs can affect the system
- * call number and arguments to be tried. It is safe to block here,
- * preventing the system call from beginning.
- *
- * Returns zero normally, or nonzero if the calling arch code should abort
- * the system call. That must prevent normal entry so no system call is
- * made. If @task ever returns to user mode after this, its register state
- * is unspecified, but should be something harmless like an %ENOSYS error
- * return. It should preserve enough information so that syscall_rollback()
- * can work (see asm-generic/syscall.h).
- *
- * Called without locks, just after entering kernel mode.
- */
-static inline __must_check int tracehook_report_syscall_entry(
- struct pt_regs *regs)
-{
- return ptrace_report_syscall(PTRACE_EVENTMSG_SYSCALL_ENTRY);
-}
-
-/**
- * tracehook_report_syscall_exit - task has just finished a system call
- * @regs: user register state of current task
- * @step: nonzero if simulating single-step or block-step
- *
- * This will be called if %SYSCALL_WORK_SYSCALL_TRACE has been set, when
- * the current task has just finished an attempted system call. Full
- * user register state is available here. It is safe to block here,
- * preventing signals from being processed.
- *
- * If @step is nonzero, this report is also in lieu of the normal
- * trap that would follow the system call instruction because
- * user_enable_block_step() or user_enable_single_step() was used.
- * In this case, %SYSCALL_WORK_SYSCALL_TRACE might not be set.
- *
- * Called without locks, just before checking for pending signals.
- */
-static inline void tracehook_report_syscall_exit(struct pt_regs *regs, int step)
-{
- if (step)
- user_single_step_report(regs);
- else
- ptrace_report_syscall(PTRACE_EVENTMSG_SYSCALL_EXIT);
-}
-
-/**
- * tracehook_signal_handler - signal handler setup is complete
- * @stepping: nonzero if debugger single-step or block-step in use
- *
- * Called by the arch code after a signal handler has been set up.
- * Register and stack state reflects the user handler about to run.
- * Signal mask changes have already been made.
- *
- * Called without locks, shortly before returning to user mode
- * (or handling more signals).
- */
-static inline void tracehook_signal_handler(int stepping)
-{
- if (stepping)
- ptrace_notify(SIGTRAP);
-}
-
-/**
- * set_notify_resume - cause tracehook_notify_resume() to be called
- * @task: task that will call tracehook_notify_resume()
- *
- * Calling this arranges that @task will call tracehook_notify_resume()
- * before returning to user mode. If it's already running in user mode,
- * it will enter the kernel and call tracehook_notify_resume() soon.
- * If it's blocked, it will not be woken.
- */
-static inline void set_notify_resume(struct task_struct *task)
-{
-#ifdef TIF_NOTIFY_RESUME
- if (!test_and_set_tsk_thread_flag(task, TIF_NOTIFY_RESUME))
- kick_process(task);
-#endif
-}
-
-/**
- * tracehook_notify_resume - report when about to return to user mode
- * @regs: user-mode registers of @current task
- *
- * This is called when %TIF_NOTIFY_RESUME has been set. Now we are
- * about to return to user mode, and the user state in @regs can be
- * inspected or adjusted. The caller in arch code has cleared
- * %TIF_NOTIFY_RESUME before the call. If the flag gets set again
- * asynchronously, this will be called again before we return to
- * user mode.
- *
- * Called without locks.
- */
-static inline void tracehook_notify_resume(struct pt_regs *regs)
-{
- clear_thread_flag(TIF_NOTIFY_RESUME);
- /*
- * This barrier pairs with task_work_add()->set_notify_resume() after
- * hlist_add_head(task->task_works);
- */
- smp_mb__after_atomic();
- if (unlikely(current->task_works))
- task_work_run();
-
-#ifdef CONFIG_KEYS_REQUEST_CACHE
- if (unlikely(current->cached_requested_key)) {
- key_put(current->cached_requested_key);
- current->cached_requested_key = NULL;
- }
-#endif
-
- mem_cgroup_handle_over_high();
- blkcg_maybe_throttle_current();
-
- rseq_handle_notify_resume(NULL, regs);
-}
-
-/*
- * called by exit_to_user_mode_loop() if ti_work & _TIF_NOTIFY_SIGNAL. This
- * is currently used by TWA_SIGNAL based task_work, which requires breaking
- * wait loops to ensure that task_work is noticed and run.
- */
-static inline void tracehook_notify_signal(void)
-{
- clear_thread_flag(TIF_NOTIFY_SIGNAL);
- smp_mb__after_atomic();
- if (current->task_works)
- task_work_run();
-}
-
-/*
- * Called when we have work to process from exit_to_user_mode_loop()
- */
-static inline void set_notify_signal(struct task_struct *task)
-{
- if (!test_and_set_tsk_thread_flag(task, TIF_NOTIFY_SIGNAL) &&
- !wake_up_state(task, TASK_INTERRUPTIBLE))
- kick_process(task);
-}
-
-#endif /* <linux/tracehook.h> */
diff --git a/include/uapi/linux/ptrace.h b/include/uapi/linux/ptrace.h
index 3747bf816f9a6b7c660e2871abdb0b6c79cdb9c2..195ae64a8c871254b7f181a0396cce3e1cdeca6c 100644
--- a/include/uapi/linux/ptrace.h
+++ b/include/uapi/linux/ptrace.h
@@ -114,7 +114,7 @@ struct ptrace_rseq_configuration {
/*
* These values are stored in task->ptrace_message
- * by tracehook_report_syscall_* to describe the current syscall-stop.
+ * by ptrace_stop to describe the current syscall-stop.
*/
#define PTRACE_EVENTMSG_SYSCALL_ENTRY 1
#define PTRACE_EVENTMSG_SYSCALL_EXIT 2
diff --git a/kernel/entry/common.c b/kernel/entry/common.c
index ed10a95a6b1dc8cc3f44d617cadecfccd3202b58..ef8d94a98b7ec2993a5be1f2a97e57373741e020 100644
--- a/kernel/entry/common.c
+++ b/kernel/entry/common.c
@@ -2,6 +2,7 @@
#include <linux/context_tracking.h>
#include <linux/entry-common.h>
+#include <linux/resume_user_mode.h>
#include <linux/highmem.h>
#include <linux/jump_label.h>
#include <linux/livepatch.h>
@@ -59,7 +60,7 @@ static long syscall_trace_enter(struct pt_regs *regs, long syscall,
/* Handle ptrace */
if (work & (SYSCALL_WORK_SYSCALL_TRACE | SYSCALL_WORK_SYSCALL_EMU)) {
- ret = arch_syscall_enter_tracehook(regs);
+ ret = ptrace_report_syscall_entry(regs);
if (ret || (work & SYSCALL_WORK_SYSCALL_EMU))
return -1L;
}
@@ -139,15 +140,7 @@ void noinstr exit_to_user_mode(void)
}
/* Workaround to allow gradual conversion of architecture code */
-void __weak arch_do_signal_or_restart(struct pt_regs *regs, bool has_signal) { }
-
-static void handle_signal_work(struct pt_regs *regs, unsigned long ti_work)
-{
- if (ti_work & _TIF_NOTIFY_SIGNAL)
- tracehook_notify_signal();
-
- arch_do_signal_or_restart(regs, ti_work & _TIF_SIGPENDING);
-}
+void __weak arch_do_signal_or_restart(struct pt_regs *regs) { }
#ifdef CONFIG_RT_DELAYED_SIGNALS
static inline void raise_delayed_signal(void)
@@ -184,10 +177,10 @@ static unsigned long exit_to_user_mode_loop(struct pt_regs *regs,
klp_update_patch_state(current);
if (ti_work & (_TIF_SIGPENDING | _TIF_NOTIFY_SIGNAL))
- handle_signal_work(regs, ti_work);
+ arch_do_signal_or_restart(regs);
if (ti_work & _TIF_NOTIFY_RESUME)
- tracehook_notify_resume(regs);
+ resume_user_mode_work(regs);
/* Architecture specific TIF work */
arch_exit_to_user_mode_work(regs, ti_work);
@@ -267,7 +260,7 @@ static void syscall_exit_work(struct pt_regs *regs, unsigned long work)
step = report_single_step(work);
if (step || work & SYSCALL_WORK_SYSCALL_TRACE)
- arch_syscall_exit_tracehook(regs, step);
+ ptrace_report_syscall_exit(regs, step);
}
/*
diff --git a/kernel/entry/kvm.c b/kernel/entry/kvm.c
index 96d476e06c7777d6d6412ea180255e03910d6792..9d09f489b60e0c9872466a0ae6bf0a9fc3c7e23a 100644
--- a/kernel/entry/kvm.c
+++ b/kernel/entry/kvm.c
@@ -8,8 +8,11 @@ static int xfer_to_guest_mode_work(struct kvm_vcpu *vcpu, unsigned long ti_work)
do {
int ret;
- if (ti_work & _TIF_NOTIFY_SIGNAL)
- tracehook_notify_signal();
+ if (ti_work & (_TIF_SIGPENDING | _TIF_NOTIFY_SIGNAL)) {
+ clear_notify_signal();
+ if (task_work_pending(current))
+ task_work_run();
+ }
if (ti_work & _TIF_SIGPENDING) {
kvm_handle_signal_exit(vcpu);
@@ -20,7 +23,7 @@ static int xfer_to_guest_mode_work(struct kvm_vcpu *vcpu, unsigned long ti_work)
schedule();
if (ti_work & _TIF_NOTIFY_RESUME)
- tracehook_notify_resume(NULL);
+ resume_user_mode_work(NULL);
ret = arch_xfer_to_guest_mode_handle_work(vcpu, ti_work);
if (ret)
diff --git a/kernel/exit.c b/kernel/exit.c
index c8ce55541a251889df839cf53d53372a748c9672..f072959fcab7f470fc8c49ae6e706d34d72d1901 100644
--- a/kernel/exit.c
+++ b/kernel/exit.c
@@ -49,7 +49,8 @@
#include <linux/audit.h> /* for audit_free() */
#include <linux/resource.h>
#include <linux/task_io_accounting_ops.h>
-#include <linux/tracehook.h>
+#include <linux/blkdev.h>
+#include <linux/task_work.h>
#include <linux/fs_struct.h>
#include <linux/init_task.h>
#include <linux/perf_event.h>
diff --git a/kernel/livepatch/transition.c b/kernel/livepatch/transition.c
index 77ef45a1e0a3266d2074118d98ffbcceadddca48..5d03a2ad106619533609bf08ff40bb2a1c504424 100644
--- a/kernel/livepatch/transition.c
+++ b/kernel/livepatch/transition.c
@@ -9,7 +9,6 @@
#include <linux/cpu.h>
#include <linux/stacktrace.h>
-#include <linux/tracehook.h>
#include "core.h"
#include "patch.h"
#include "transition.h"
diff --git a/kernel/ptrace.c b/kernel/ptrace.c
index eea265082e9752b186a59185ae441a51fe24f212..ccc4b465775b82b78267d6f96f56097c07eabd9c 100644
--- a/kernel/ptrace.c
+++ b/kernel/ptrace.c
@@ -371,6 +371,26 @@ bool ptrace_may_access(struct task_struct *task, unsigned int mode)
return !err;
}
+static int check_ptrace_options(unsigned long data)
+{
+ if (data & ~(unsigned long)PTRACE_O_MASK)
+ return -EINVAL;
+
+ if (unlikely(data & PTRACE_O_SUSPEND_SECCOMP)) {
+ if (!IS_ENABLED(CONFIG_CHECKPOINT_RESTORE) ||
+ !IS_ENABLED(CONFIG_SECCOMP))
+ return -EINVAL;
+
+ if (!capable(CAP_SYS_ADMIN))
+ return -EPERM;
+
+ if (seccomp_mode(¤t->seccomp) != SECCOMP_MODE_DISABLED ||
+ current->ptrace & PT_SUSPEND_SECCOMP)
+ return -EPERM;
+ }
+ return 0;
+}
+
static int ptrace_attach(struct task_struct *task, long request,
unsigned long addr,
unsigned long flags)
@@ -382,8 +402,16 @@ static int ptrace_attach(struct task_struct *task, long request,
if (seize) {
if (addr != 0)
goto out;
+ /*
+ * This duplicates the check in check_ptrace_options() because
+ * ptrace_attach() and ptrace_setoptions() have historically
+ * used different error codes for unknown ptrace options.
+ */
if (flags & ~(unsigned long)PTRACE_O_MASK)
goto out;
+ retval = check_ptrace_options(flags);
+ if (retval)
+ return retval;
flags = PT_PTRACED | PT_SEIZED | (flags << PT_OPT_FLAG_SHIFT);
} else {
flags = PT_PTRACED;
@@ -654,22 +682,11 @@ int ptrace_writedata(struct task_struct *tsk, char __user *src, unsigned long ds
static int ptrace_setoptions(struct task_struct *child, unsigned long data)
{
unsigned flags;
+ int ret;
- if (data & ~(unsigned long)PTRACE_O_MASK)
- return -EINVAL;
-
- if (unlikely(data & PTRACE_O_SUSPEND_SECCOMP)) {
- if (!IS_ENABLED(CONFIG_CHECKPOINT_RESTORE) ||
- !IS_ENABLED(CONFIG_SECCOMP))
- return -EINVAL;
-
- if (!capable(CAP_SYS_ADMIN))
- return -EPERM;
-
- if (seccomp_mode(¤t->seccomp) != SECCOMP_MODE_DISABLED ||
- current->ptrace & PT_SUSPEND_SECCOMP)
- return -EPERM;
- }
+ ret = check_ptrace_options(data);
+ if (ret)
+ return ret;
/* Avoid intermediate state when all opts are cleared */
flags = child->ptrace;
diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c
index ee0664c9d291e6f8742a10009344e70bfaf88566..d4bd299d67abfe84e56cf99693adc9a12a0ae27d 100644
--- a/kernel/sched/fair.c
+++ b/kernel/sched/fair.c
@@ -44,6 +44,7 @@
#include <linux/profile.h>
#include <linux/psi.h>
#include <linux/ratelimit.h>
+#include <linux/task_work.h>
#include <asm/switch_to.h>
diff --git a/kernel/seccomp.c b/kernel/seccomp.c
index db10e73d06e028371702b745bc2652f193828a7a..b5ac87f6dbd41b7eee646c268860d997b9eaead1 100644
--- a/kernel/seccomp.c
+++ b/kernel/seccomp.c
@@ -42,7 +42,6 @@
#include <linux/pid.h>
#include <linux/ptrace.h>
#include <linux/capability.h>
-#include <linux/tracehook.h>
#include <linux/uaccess.h>
#include <linux/anon_inodes.h>
#include <linux/lockdep.h>
diff --git a/kernel/signal.c b/kernel/signal.c
index e93de6daa1889ef78191c1749e4c87732986ccbb..368a34c25bbf10db57e3c23effdaa314848d8bf2 100644
--- a/kernel/signal.c
+++ b/kernel/signal.c
@@ -32,7 +32,7 @@
#include <linux/signal.h>
#include <linux/signalfd.h>
#include <linux/ratelimit.h>
-#include <linux/tracehook.h>
+#include <linux/task_work.h>
#include <linux/capability.h>
#include <linux/freezer.h>
#include <linux/pid_namespace.h>
@@ -2229,14 +2229,17 @@ static void do_notify_parent_cldstop(struct task_struct *tsk,
* That makes it a way to test a stopped process for
* being ptrace-stopped vs being job-control-stopped.
*
- * If we actually decide not to stop at all because the tracer
- * is gone, we keep current->exit_code unless clear_code.
+ * Returns the signal the ptracer requested the code resume
+ * with. If the code did not stop because the tracer is gone,
+ * the stop signal remains unchanged unless clear_code.
*/
-static void ptrace_stop(int exit_code, int why, int clear_code, kernel_siginfo_t *info)
+static int ptrace_stop(int exit_code, int why, int clear_code,
+ unsigned long message, kernel_siginfo_t *info)
__releases(¤t->sighand->siglock)
__acquires(¤t->sighand->siglock)
{
bool gstop_done = false;
+ bool read_code = true;
if (arch_ptrace_stop_needed()) {
/*
@@ -2278,6 +2281,7 @@ static void ptrace_stop(int exit_code, int why, int clear_code, kernel_siginfo_t
*/
smp_wmb();
+ current->ptrace_message = message;
current->last_siginfo = info;
current->exit_code = exit_code;
@@ -2344,8 +2348,9 @@ static void ptrace_stop(int exit_code, int why, int clear_code, kernel_siginfo_t
/* tasklist protects us from ptrace_freeze_traced() */
__set_current_state(TASK_RUNNING);
+ read_code = false;
if (clear_code)
- current->exit_code = 0;
+ exit_code = 0;
read_unlock(&tasklist_lock);
}
@@ -2355,7 +2360,11 @@ static void ptrace_stop(int exit_code, int why, int clear_code, kernel_siginfo_t
* any signal-sending on another CPU that wants to examine it.
*/
spin_lock_irq(¤t->sighand->siglock);
+ if (read_code)
+ exit_code = current->exit_code;
current->last_siginfo = NULL;
+ current->ptrace_message = 0;
+ current->exit_code = 0;
/* LISTENING can be set only during STOP traps, clear it */
current->jobctl &= ~JOBCTL_LISTENING;
@@ -2366,9 +2375,10 @@ static void ptrace_stop(int exit_code, int why, int clear_code, kernel_siginfo_t
* This sets TIF_SIGPENDING, but never clears it.
*/
recalc_sigpending_tsk(current);
+ return exit_code;
}
-static void ptrace_do_notify(int signr, int exit_code, int why)
+static int ptrace_do_notify(int signr, int exit_code, int why, unsigned long message)
{
kernel_siginfo_t info;
@@ -2379,18 +2389,21 @@ static void ptrace_do_notify(int signr, int exit_code, int why)
info.si_uid = from_kuid_munged(current_user_ns(), current_uid());
/* Let the debugger run. */
- ptrace_stop(exit_code, why, 1, &info);
+ return ptrace_stop(exit_code, why, 1, message, &info);
}
-void ptrace_notify(int exit_code)
+int ptrace_notify(int exit_code, unsigned long message)
{
+ int signr;
+
BUG_ON((exit_code & (0x7f | ~0xffff)) != SIGTRAP);
- if (unlikely(current->task_works))
+ if (unlikely(task_work_pending(current)))
task_work_run();
spin_lock_irq(¤t->sighand->siglock);
- ptrace_do_notify(SIGTRAP, exit_code, CLD_TRAPPED);
+ signr = ptrace_do_notify(SIGTRAP, exit_code, CLD_TRAPPED, message);
spin_unlock_irq(¤t->sighand->siglock);
+ return signr;
}
/**
@@ -2545,11 +2558,10 @@ static void do_jobctl_trap(void)
signr = SIGTRAP;
WARN_ON_ONCE(!signr);
ptrace_do_notify(signr, signr | (PTRACE_EVENT_STOP << 8),
- CLD_STOPPED);
+ CLD_STOPPED, 0);
} else {
WARN_ON_ONCE(!signr);
- ptrace_stop(signr, CLD_STOPPED, 0, NULL);
- current->exit_code = 0;
+ ptrace_stop(signr, CLD_STOPPED, 0, 0, NULL);
}
}
@@ -2602,15 +2614,12 @@ static int ptrace_signal(int signr, kernel_siginfo_t *info, enum pid_type type)
* comment in dequeue_signal().
*/
current->jobctl |= JOBCTL_STOP_DEQUEUED;
- ptrace_stop(signr, CLD_TRAPPED, 0, info);
+ signr = ptrace_stop(signr, CLD_TRAPPED, 0, 0, info);
/* We're back. Did the debugger cancel the sig? */
- signr = current->exit_code;
if (signr == 0)
return signr;
- current->exit_code = 0;
-
/*
* Update the siginfo structure if the signal has
* changed. If the debugger wanted something
@@ -2667,20 +2676,12 @@ bool get_signal(struct ksignal *ksig)
struct signal_struct *signal = current->signal;
int signr;
- if (unlikely(current->task_works))
+ clear_notify_signal();
+ if (unlikely(task_work_pending(current)))
task_work_run();
- /*
- * For non-generic architectures, check for TIF_NOTIFY_SIGNAL so
- * that the arch handlers don't all have to do it. If we get here
- * without TIF_SIGPENDING, just exit after running signal work.
- */
- if (!IS_ENABLED(CONFIG_GENERIC_ENTRY)) {
- if (test_thread_flag(TIF_NOTIFY_SIGNAL))
- tracehook_notify_signal();
- if (!task_sigpending(current))
- return false;
- }
+ if (!task_sigpending(current))
+ return false;
if (unlikely(uprobe_deny_signal()))
return false;
@@ -2939,7 +2940,8 @@ static void signal_delivered(struct ksignal *ksig, int stepping)
set_current_blocked(&blocked);
if (current->sas_ss_flags & SS_AUTODISARM)
sas_ss_reset(current);
- tracehook_signal_handler(stepping);
+ if (stepping)
+ ptrace_notify(SIGTRAP, 0);
}
void signal_setup_done(int failed, struct ksignal *ksig, int stepping)
diff --git a/kernel/task_work.c b/kernel/task_work.c
index 1698fbe6f0e134ac2a2ab3e9357b44af99c71f83..c59e1a49bc406c7a2cb0e05a36053dd3ad13a9ba 100644
--- a/kernel/task_work.c
+++ b/kernel/task_work.c
@@ -1,7 +1,7 @@
// SPDX-License-Identifier: GPL-2.0
#include <linux/spinlock.h>
#include <linux/task_work.h>
-#include <linux/tracehook.h>
+#include <linux/resume_user_mode.h>
static struct callback_head work_exited; /* all we need is ->next == NULL */
@@ -78,7 +78,7 @@ task_work_cancel_match(struct task_struct *task,
struct callback_head *work;
unsigned long flags;
- if (likely(!task->task_works))
+ if (likely(!task_work_pending(task)))
return NULL;
/*
* If cmpxchg() fails we continue without updating pprev.
diff --git a/kernel/time/posix-cpu-timers.c b/kernel/time/posix-cpu-timers.c
index e13e628509fb4acf3ba23998ba7829326a6f962b..0a97193984dbfdc12e0ab5bdf7e36606510a4dbe 100644
--- a/kernel/time/posix-cpu-timers.c
+++ b/kernel/time/posix-cpu-timers.c
@@ -15,6 +15,7 @@
#include <linux/workqueue.h>
#include <linux/compat.h>
#include <linux/sched/deadline.h>
+#include <linux/task_work.h>
#include "posix-timers.h"
diff --git a/mm/memcontrol.c b/mm/memcontrol.c
index d495c2acb9f0e916be6870d7a2f43c4236099d10..725f767232207dc5c20c7630556ce087b9db3905 100644
--- a/mm/memcontrol.c
+++ b/mm/memcontrol.c
@@ -60,7 +60,7 @@
#include <linux/oom.h>
#include <linux/lockdep.h>
#include <linux/file.h>
-#include <linux/tracehook.h>
+#include <linux/resume_user_mode.h>
#include <linux/psi.h>
#include <linux/seq_buf.h>
#include "internal.h"
diff --git a/security/apparmor/domain.c b/security/apparmor/domain.c
index 583680f6cd8110a354b7ddfde6e8d4b26b59087e..a29e69d2c30057af24c0e10a64c676841564075e 100644
--- a/security/apparmor/domain.c
+++ b/security/apparmor/domain.c
@@ -14,7 +14,6 @@
#include <linux/file.h>
#include <linux/mount.h>
#include <linux/syscalls.h>
-#include <linux/tracehook.h>
#include <linux/personality.h>
#include <linux/xattr.h>
#include <linux/user_namespace.h>
diff --git a/security/selinux/hooks.c b/security/selinux/hooks.c
index b12e14b2797b9a95004a8bd632534dcb7b87ab13..e9e959343de98db83a35d8b0592fe4129dc5a0c1 100644
--- a/security/selinux/hooks.c
+++ b/security/selinux/hooks.c
@@ -25,7 +25,6 @@
#include <linux/kd.h>
#include <linux/kernel.h>
#include <linux/kernel_read_file.h>
-#include <linux/tracehook.h>
#include <linux/errno.h>
#include <linux/sched/signal.h>
#include <linux/sched/task.h>