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05 April 2024, 19:05:47 UTC
Revision 10970e1b4be9c74fce8ab6e3c34a7d718f063f2c authored by Borislav Petkov on 12 February 2019, 13:28:03 UTC, committed by Borislav Petkov on 13 February 2019, 11:10:51 UTC 
x86/a.out: Clear the dump structure initially
 
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
1 parent 20e55bc
History
Tip revision: 10970e1b4be9c74fce8ab6e3c34a7d718f063f2c authored by Borislav Petkov on 12 February 2019, 13:28:03 UTC
x86/a.out: Clear the dump structure initially
Tip revision: 10970e1
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