linux-stable/arch/x86/entry
Eric W. Biederman 9a18c9c833 exit: Add and use make_task_dead.
commit 0e25498f8c 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>
2023-02-06 07:52:49 +01:00
..
syscalls syscalls/x86: Use the correct function type for sys_ni_syscall 2020-01-17 19:48:31 +01:00
vdso x86: link vdso and boot with -z noexecstack --no-warn-rwx-segments 2022-08-25 11:17:17 +02:00
vsyscall
calling.h x86/entry: Add kernel IBRS implementation 2022-10-07 09:16:55 +02:00
common.c x86/syscalls: Split the x32 syscalls into their own table 2019-07-22 10:31:23 +02:00
entry_32.S exit: Add and use make_task_dead. 2023-02-06 07:52:49 +01:00
entry_64.S exit: Add and use make_task_dead. 2023-02-06 07:52:49 +01:00
entry_64_compat.S x86/entry: Add kernel IBRS implementation 2022-10-07 09:16:55 +02:00
Makefile
syscall_32.c syscalls/x86: Use the correct function type for sys_ni_syscall 2020-01-17 19:48:31 +01:00
syscall_64.c syscalls/x86: Use the correct function type for sys_ni_syscall 2020-01-17 19:48:31 +01:00
thunk_32.S x86: Use CONFIG_PREEMPTION 2019-07-31 19:03:35 +02:00
thunk_64.S x86: Use CONFIG_PREEMPTION 2019-07-31 19:03:35 +02:00