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author | Eric W. Biederman <ebiederm@xmission.com> | 2023-02-02 16:27:05 -0800 |
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committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2023-02-06 07:49:45 +0100 |
commit | 7d5de91a9ae564c7b5869310192ab6cb72ea4c6b (patch) | |
tree | 8791cd8981dfe4ba6bef5b09b11d44b2a3ea6335 /include/linux | |
parent | dd8cccab31e6255cb49a73e5c2e019cac7fb2eac (diff) | |
download | linux-stable-7d5de91a9ae564c7b5869310192ab6cb72ea4c6b.tar.gz linux-stable-7d5de91a9ae564c7b5869310192ab6cb72ea4c6b.tar.bz2 linux-stable-7d5de91a9ae564c7b5869310192ab6cb72ea4c6b.zip |
exit: Add and use make_task_dead.
commit 0e25498f8cd43c1b5aa327f373dd094e9a006da7 upstream.
There are two big uses of do_exit. The first is it's design use to be
the guts of the exit(2) system call. The second use is to terminate
a task after something catastrophic has happened like a NULL pointer
in kernel code.
Add a function make_task_dead that is initialy exactly the same as
do_exit to cover the cases where do_exit is called to handle
catastrophic failure. In time this can probably be reduced to just a
light wrapper around do_task_dead. For now keep it exactly the same so
that there will be no behavioral differences introducing this new
concept.
Replace all of the uses of do_exit that use it for catastraphic
task cleanup with make_task_dead to make it clear what the code
is doing.
As part of this rename rewind_stack_do_exit
rewind_stack_and_make_dead.
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'include/linux')
-rw-r--r-- | include/linux/sched/task.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/sched/task.h b/include/linux/sched/task.h index 91401309b1aa..0ee9aab3e309 100644 --- a/include/linux/sched/task.h +++ b/include/linux/sched/task.h @@ -36,6 +36,7 @@ extern int sched_fork(unsigned long clone_flags, struct task_struct *p); extern void sched_dead(struct task_struct *p); void __noreturn do_task_dead(void); +void __noreturn make_task_dead(int signr); extern void proc_caches_init(void); |