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| author | Eric W. Biederman <ebiederm@xmission.com> | 2023-02-01 20:42:42 -0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2023-02-06 07:52:49 +0100 |
| commit | 9a18c9c8336fff473a2b72707bd14a52298417b8 (patch) | |
| tree | db5dfa587a2bc14b1c224e396ebb0f30e75b61bf /tools | |
| parent | 2f87e255123f4a3873c72c5b9fdc7574121970ad (diff) | |
| download | linux-stable-9a18c9c8336fff473a2b72707bd14a52298417b8.tar.gz linux-stable-9a18c9c8336fff473a2b72707bd14a52298417b8.tar.bz2 linux-stable-9a18c9c8336fff473a2b72707bd14a52298417b8.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: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'tools')
| -rw-r--r-- | tools/objtool/check.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/tools/objtool/check.c b/tools/objtool/check.c index ccf5580442d2..14be7d261ae7 100644 --- a/tools/objtool/check.c +++ b/tools/objtool/check.c @@ -136,6 +136,7 @@ static bool __dead_end_function(struct objtool_file *file, struct symbol *func, "panic", "do_exit", "do_task_dead", + "make_task_dead", "__module_put_and_exit", "complete_and_exit", "__reiserfs_panic", @@ -143,7 +144,7 @@ static bool __dead_end_function(struct objtool_file *file, struct symbol *func, "fortify_panic", "usercopy_abort", "machine_real_restart", - "rewind_stack_do_exit", + "rewind_stack_and_make_dead" "cpu_bringup_and_idle", }; |