Michael Ellerman 7581495ac8 mm: kfence: fix false positives on big endian ...

Since commit 1ba3cbf3ec3b ("mm: kfence: improve the performance of
__kfence_alloc() and __kfence_free()"), kfence reports failures in random
places at boot on big endian machines.

The problem is that the new KFENCE_CANARY_PATTERN_U64 encodes the address
of each byte in its value, so it needs to be byte swapped on big endian
machines.

The compiler is smart enough to do the le64_to_cpu() at compile time, so
there is no runtime overhead.

Link: https://lkml.kernel.org/r/20230505035127.195387-1-mpe@ellerman.id.au
Fixes: 1ba3cbf3ec3b ("mm: kfence: improve the performance of __kfence_alloc() and __kfence_free()")
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Reviewed-by: Alexander Potapenko <glider@google.com>
Reviewed-by: Marco Elver <elver@google.com>
Cc: Peng Zhang <zhangpeng.00@bytedance.com>
Cc: David Laight <David.Laight@ACULAB.COM>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

2023-05-17 15:24:33 -07:00

..

.kunitconfig

kfence: test: use new suite_{init/exit} support, add .kunitconfig

2022-05-02 12:35:57 -06:00

core.c

- Nick Piggin's "shoot lazy tlbs" series, to improve the peformance of

2023-04-27 19:42:02 -07:00

kfence_test.c

printk: export console trace point for kcsan/kasan/kfence/kmsan

2023-04-18 16:30:11 -07:00

kfence.h

mm: kfence: fix false positives on big endian

2023-05-17 15:24:33 -07:00

Makefile

kfence: avoid passing -g for test

2023-03-23 17:18:35 -07:00

report.c

mm: kfence: improve the performance of __kfence_alloc() and __kfence_free()

2023-04-18 16:29:49 -07:00