On Sat, 27 Apr 2024 20:50:20 +0200
Erhard Furtner <erhard_f@xxxxxxxxxxx> wrote:
> Greetings!
>
> Building kernel v6.9-rc5 with GCC 13.2 + binutils 2.42 and running KASAN KUnit tests (CONFIG_KASAN_INLINE=y, CONFIG_KASAN_KUNIT_TEST=y) on my Dual CPU PowerMac G4 DP always freezes the machine after test 21 (see attached dmesg gcc_v02). Sometimes the G4 is able to reboot, most of the time it just freezes:
Turns out this is not a ppc specific issue at all, happens also on my AMD FX 8370, tested on kernel v6.9-rc6. clang18 built kernel runs and passes KASAN KUnit tests fine whereas a gcc13 built kernel freezes or reboots after test 20 (ppc after test 21):
[...]
ok 16 kmalloc_uaf_16
# kmalloc_oob_in_memset: EXPECTATION FAILED at mm/kasan/kasan_test.c:566
KASAN failure expected in "memset(ptr, 0, size + KASAN_GRANULE_SIZE)", but none occurred
not ok 17 kmalloc_oob_in_memset
# kmalloc_oob_memset_2: EXPECTATION FAILED at mm/kasan/kasan_test.c:496
KASAN failure expected in "memset(ptr + size - 1, 0, memset_size)", but none occurred
not ok 18 kmalloc_oob_memset_2
# kmalloc_oob_memset_4: EXPECTATION FAILED at mm/kasan/kasan_test.c:514
KASAN failure expected in "memset(ptr + size - 3, 0, memset_size)", but none occurred
not ok 19 kmalloc_oob_memset_4
# kmalloc_oob_memset_8: EXPECTATION FAILED at mm/kasan/kasan_test.c:532
KASAN failure expected in "memset(ptr + size - 7, 0, memset_size)", but none occurred
not ok 20 kmalloc_oob_memset_8
# kmalloc_oob_memset_16: EXPECTATION FAILED at mm/kasan/kasan_test.c:550
KASAN failure expected in "memset(ptr + size - 15, 0, memset_size)", but none occurred
Kernel .config + dmesg attached.
Regards,
Erhard
Attachment:
dmesg_69-rc6_fx8370-gcc13
Description: Binary data
Attachment:
config_69-rc6_fx8370
Description: Binary data
