Re: [PATCH v2 1/3] mm/slub: Clarify verification reporting
From: Vlastimil Babka <hidden>
Date: 2020-10-13 16:13:40
Also in:
linux-mm, lkml
On 10/9/20 9:54 PM, Kees Cook wrote:
Instead of repeating "Redzone" and "Poison", clarify which sides of
those zones got tripped. Additionally fix column alignment in the
trailer.
Before:
BUG test (Tainted: G B ): Redzone overwritten
...
Redzone (____ptrval____): bb bb bb bb bb bb bb bb ........
Object (____ptrval____): f6 f4 a5 40 1d e8 ...@..
Redzone (____ptrval____): 1a aa ..
Padding (____ptrval____): 00 00 00 00 00 00 00 00 ........
After:
BUG test (Tainted: G B ): Right Redzone overwritten
...
Redzone (____ptrval____): bb bb bb bb bb bb bb bb ........
Object (____ptrval____): f6 f4 a5 40 1d e8 ...@..
Redzone (____ptrval____): 1a aa ..
Padding (____ptrval____): 00 00 00 00 00 00 00 00 ........
Fixes: d86bd1bece6f ("mm/slub: support left redzone")
Fixes: ffc79d288000 ("slub: use print_hex_dump")
Fixes: 2492268472e7 ("SLUB: change error reporting format to follow lockdep loosely")Not sure about those Fixes: tag as this is mainly an enhancement. I'd only use those for real bug fixes.
Signed-off-by: Kees Cook <redacted>
Acked-by: Vlastimil Babka <redacted>