Re: Random memory corruption with v5.2

From: Atish Patra <atish.patra@wdc.com>
To: David Abdurachmanov <david.abdurachmanov@gmail.com>,
	Andreas Schwab <schwab@suse.de>
Cc: "linux-riscv@lists.infradead.org" <linux-riscv@lists.infradead.org>
Subject: Re: Random memory corruption with v5.2
Date: Mon, 29 Jul 2019 21:27:38 -0700	[thread overview]
Message-ID: <34577dc8-bf12-9a31-5884-999cb4c88b85@wdc.com> (raw)
In-Reply-To: <CAEn-LTpM-0TMxkNNh6nnLH9Bnr9Zm+VFLf=z1y9sER6RXrQooQ@mail.gmail.com>

On 7/29/19 3:58 PM, David Abdurachmanov wrote:
> On Mon, Jul 29, 2019 at 1:51 PM Andreas Schwab <schwab@suse.de> wrote:
>>
>> Since switching to 5.2 kernels I'm seeing random crashes and
>> misbehaviors on the HiFive, for example while building gcc or glibc.
>> Perhaps missing TLB flushes?
> 
> Do you have some examples of crashes?
> 
> I am running 5.2-rc7 on a large number QEMU instances for builders,
> and I see some strange behavior, but I haven't noticed any issues
> on the board using OpenEmbedded build with the final 5.2 yet.
> 

Looking at the timestamps, these seems to be different crashes in 
different instances. Is there any particular workload you were running 
or just happens randomly if you run long enough ?

If you have complete dmesg and/or vmlinux that will help as well.

> [17983.074847] Unable to handle kernel paging request at virtual
> address 0fffffdff5e14700
> [17983.085132] Oops [#1]
> 
> [133953.710130] kernel BUG at include/linux/mm.h:1023!
> [133953.718204] Kernel BUG [#1]
> 
> [165770.567652] Unable to handle kernel NULL pointer dereference at
> virtual address 0000000000000010
> 
> [148578.912479] kernel BUG at lib/list_debug.c:51!
> [148578.917701] Kernel BUG [#1]
> 
> [163756.869949] EXT4-fs (vda2): pa 00000000e9971722: logic 512, phys.
> 2558464, len 512
> [163756.889549] EXT4-fs error (device vda2):
> ext4_mb_release_inode_pa:3837: group 78, free 0, pa_free 149
> [163757.757600] EXT4-fs (vda2): pa 0000000066b479c3: logic 32, phys.
> 2558368, len 96
> 
> sbi_trap_error: hart1: misaligned store handler failed (error -10)
> sbi_trap_error: hart1: mcause=0x0000000000000006 mtval=0x00000000000002c3
> sbi_trap_error: hart1: mepc=0xffffffe0009dc1f4 mstatus=0x0000000000000802
> sbi_trap_error: hart1: ra=0xffffffe0009dc1ee sp=0xffffffe1f3c17be0
> 
> [178876.406122] Unable to handle kernel paging request at virtual
> address 0000000000012a28
> [178876.423941] Oops [#1]
> 
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> 

-- 
Regards,
Atish

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