Messages in this thread | | | Date | Thu, 9 Jun 2022 12:43:39 +0200 | Subject | Re: [PATCH V3 0/7] x86/entry: Convert error_entry() to C code | From | Vegard Nossum <> |
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On 6/9/22 11:11, Vegard Nossum wrote: > On 6/6/22 16:45, Lai Jiangshan wrote: >> From: Lai Jiangshan <jiangshan.ljs@antgroup.com> >> >> Add some C equivalent functions of the ASM macros and implement the whole >> error_entry() as C code. > > Hi, > > I did some testing of your patches (on top of mainline commit > 34f4335c16a5) and I see these two KASAN reports very occasionally during > boot: > > 1) > > Mountpoint-cache hash table entries: 2048 (order: 2, 16384 bytes, linear) > ================================================================== > BUG: KASAN: wild-memory-access in rcu_nmi_enter+0x6e/0xf0
So this one I get without your patches as well. It's only about 1% of boots, though. Let me try to bisect this and start a new thread.
> 2) > > BUG: KASAN: out-of-bounds in rcu_nmi_enter+0x6e/0xf0 > Read of size 4 at addr ff11000034e38b10 by task swapper/0/0
I haven't seen this without your patches, although it's the exact same callsite so I assume it must be related to the first problem.
Vegard
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