Re: BUG at mm/vmalloc.c:3089! - invalid opcode: 0000 [#1] SMP KASAN PTI

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On Wed, Jul 22, 2020 at 1:55 AM Arnd Bergmann <arnd@xxxxxxxx> wrote:
>
> Adding Roman Gushchin to Cc, he touched that code recently.
>
> Naresh, if nobody has any immediate ideas, you could double-check by
> reverting these commits:
>
> e0b8d00b7561 mm: memcg/percpu: per-memcg percpu memory statistics
> 99411af13595 mm/percpu: fix 'defined but not used' warning
> 9398ce6306b6 mm-memcg-percpu-account-percpu-memory-to-memory-cgroups-fix-fix
> 54116d471779 mm-memcg-percpu-account-percpu-memory-to-memory-cgroups-fix
> ec518e090843 mm: memcg/percpu: account percpu memory to memory cgroups
> 9bc897d18dc3 percpu: return number of released bytes from pcpu_free_area()
>
>        Arnd
>

I think syzbot has bisected this issue to the suspect patch.

https://lore.kernel.org/lkml/00000000000043f09405ab01b0b8@xxxxxxxxxx/



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