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| author | Eric W. Biederman <ebiederm@xmission.com> | 2022-02-09 16:51:14 +0100 |
|---|---|---|
| committer | Eric W. Biederman <ebiederm@xmission.com> | 2022-03-10 23:51:36 +0100 |
| commit | 8ba62d37949e248c698c26e0d82d72fda5d33ebf (patch) | |
| tree | 1faa152e80c54f5bcb1f740ec43d8537c3d42f17 /arch/x86/kernel/signal.c | |
| parent | task_work: Introduce task_work_pending (diff) | |
| download | linux-8ba62d37949e248c698c26e0d82d72fda5d33ebf.tar.xz linux-8ba62d37949e248c698c26e0d82d72fda5d33ebf.zip | |
task_work: Call tracehook_notify_signal from get_signal on all architectures
Always handle TIF_NOTIFY_SIGNAL in get_signal. With commit 35d0b389f3b2
("task_work: unconditionally run task_work from get_signal()") always
calling task_work_run all of the work of tracehook_notify_signal is
already happening except clearing TIF_NOTIFY_SIGNAL.
Factor clear_notify_signal out of tracehook_notify_signal and use it in
get_signal so that get_signal only needs one call of task_work_run.
To keep the semantics in sync update xfer_to_guest_mode_work (which
does not call get_signal) to call tracehook_notify_signal if either
_TIF_SIGPENDING or _TIF_NOTIFY_SIGNAL.
Reviewed-by: Kees Cook <keescook@chromium.org>
Link: https://lkml.kernel.org/r/20220309162454.123006-8-ebiederm@xmission.com
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Diffstat (limited to 'arch/x86/kernel/signal.c')
| -rw-r--r-- | arch/x86/kernel/signal.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/arch/x86/kernel/signal.c b/arch/x86/kernel/signal.c index ec71e06ae364..de3d5b5724d8 100644 --- a/arch/x86/kernel/signal.c +++ b/arch/x86/kernel/signal.c @@ -861,11 +861,11 @@ 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; |