android_kernel_oneplus_msm8998/arch/x86/ia32
Borislav Petkov 5079b1d1aa x86/a.out: Clear the dump structure initially
commit 10970e1b4be9c74fce8ab6e3c34a7d718f063f2c upstream.

dump_thread32() in aout_core_dump() does not clear the user32 structure
allocated on the stack as the first thing on function entry.

As a result, the dump.u_comm, dump.u_ar0 and dump.signal which get
assigned before the clearing, get overwritten.

Rename that function to fill_dump() to make it clear what it does and
call it first thing.

This was caught while staring at a patch by Derek Robson
<robsonde@gmail.com>.

Signed-off-by: Borislav Petkov <bp@suse.de>
Cc: Derek Robson <robsonde@gmail.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Michael Matz <matz@suse.de>
Cc: x86@kernel.org
Cc: <stable@vger.kernel.org>
Link: https://lkml.kernel.org/r/20190202005512.3144-1-robsonde@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-02-20 10:13:23 +01:00
..
audit.c x86: hook up execveat system call 2014-12-13 12:42:51 -08:00
ia32_aout.c x86/a.out: Clear the dump structure initially 2019-02-20 10:13:23 +01:00
ia32_signal.c Merge branch 'x86-headers-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2015-11-03 21:05:40 -08:00
Makefile x86/asm/entry: Move the compat syscall entry code to arch/x86/entry/ 2015-06-03 18:51:32 +02:00
sys_ia32.c x86/compat: Remove sys32_vm86_warning 2015-03-04 06:16:21 +01:00