diff options
| author | Peter Zijlstra <peterz@infradead.org> | 2022-03-08 18:30:48 +0300 |
|---|---|---|
| committer | Peter Zijlstra <peterz@infradead.org> | 2022-03-15 12:32:43 +0300 |
| commit | eae654f1c21216daa9fbb92591c0d9f5ae46cfc5 (patch) | |
| tree | 04170c1b00dcd294309fcfe44bce02c49ee4bf6a | |
| parent | f9cdf7ca57cada055f61ef6d0eb4db21c3f200db (diff) | |
exit: Mark do_group_exit() __noreturn
vmlinux.o: warning: objtool: get_signal()+0x108: unreachable instruction
0000 000000000007f930 <get_signal>:
...
0103 7fa33: e8 00 00 00 00 call 7fa38 <get_signal+0x108> 7fa34: R_X86_64_PLT32 do_group_exit-0x4
0108 7fa38: 41 8b 45 74 mov 0x74(%r13),%eax
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Acked-by: Josh Poimboeuf <jpoimboe@redhat.com>
Link: https://lore.kernel.org/r/20220308154319.351270711@infradead.org
| -rw-r--r-- | include/linux/sched/task.h | 2 | ||||
| -rw-r--r-- | kernel/exit.c | 2 | ||||
| -rw-r--r-- | tools/objtool/check.c | 1 |
3 files changed, 3 insertions, 2 deletions
diff --git a/include/linux/sched/task.h b/include/linux/sched/task.h index e84e54d1b490..719c9a6cac8d 100644 --- a/include/linux/sched/task.h +++ b/include/linux/sched/task.h @@ -79,7 +79,7 @@ static inline void exit_thread(struct task_struct *tsk) { } #endif -extern void do_group_exit(int); +extern __noreturn void do_group_exit(int); extern void exit_files(struct task_struct *); extern void exit_itimers(struct signal_struct *); diff --git a/kernel/exit.c b/kernel/exit.c index b00a25bb4ab9..b71f9df9074e 100644 --- a/kernel/exit.c +++ b/kernel/exit.c @@ -906,7 +906,7 @@ SYSCALL_DEFINE1(exit, int, error_code) * Take down every thread in the group. This is called by fatal signals * as well as by sys_exit_group (below). */ -void +void __noreturn do_group_exit(int exit_code) { struct signal_struct *sig = current->signal; diff --git a/tools/objtool/check.c b/tools/objtool/check.c index c3ddcecdab57..9896562350a8 100644 --- a/tools/objtool/check.c +++ b/tools/objtool/check.c @@ -181,6 +181,7 @@ static bool __dead_end_function(struct objtool_file *file, struct symbol *func, "kunit_try_catch_throw", "xen_start_kernel", "cpu_bringup_and_idle", + "do_group_exit", "stop_this_cpu", }; |