linux-kernel - Re: [bugreport] kernel 5.2 pblk bad header/extent: invalid extent entries

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Date:   Sat, 18 May 2019 16:07:56 +0500
From:   Mikhail Gavrilov <mikhail.v.gavrilov@...il.com>
To:     Linux List Kernel Mailing <linux-kernel@...r.kernel.org>,
        linux-ext4@...r.kernel.org
Subject: Re: [bugreport] kernel 5.2 pblk bad header/extent: invalid extent entries

On Sat, 18 May 2019 at 11:44, Mikhail Gavrilov
<mikhail.v.gavrilov@...il.com> wrote:
>
> Hi folks.
> Yesterday I updated kernel to 5.2 (git commit 7e9890a3500d)
> I always leave computer working at night.
> Today at morning I am found that computer are hanged.
> I was connect via ssh and look at kernel log.
> There I had seen strange records which I never seen before:
>
> [28616.429757] EXT4-fs error (device nvme0n1p2): ext4_find_extent:908:
> inode #8: comm jbd2/nvme0n1p2-: pblk 23101439 bad header/extent:
> invalid extent entries - magic f30a, entries 8, max 340(340), depth
> 0(0)
> [28616.430602] jbd2_journal_bmap: journal block not found at offset
> 4383 on nvme0n1p2-8
> [28616.430610] Aborting journal on device nvme0n1p2-8.
> [28616.432474] EXT4-fs error (device nvme0n1p2):
> ext4_journal_check_start:61: Detected aborted journal
> [28616.432489] EXT4-fs error (device nvme0n1p2):
> ext4_journal_check_start:61: Detected aborted journal
> [28616.432551] EXT4-fs (nvme0n1p2): Remounting filesystem read-only
> [28616.432690] EXT4-fs (nvme0n1p2): ext4_writepages: jbd2_start:
> 9223372036854775791 pages, ino 3285789; err -30
> [28616.432692] EXT4-fs error (device nvme0n1p2):
> ext4_journal_check_start:61: Detected aborted journal
>
> After reboot computer and running fsck system looks like working.
> But I am afraid that it could happens again and I may lost all my data.
>
> How safe this error and what does it mean?
> It a bug of kernel 5.2 or not?
>

It happens today again.

[18018.969636] EXT4-fs error (device nvme0n1p2): ext4_find_extent:908:
inode #8: comm jbd2/nvme0n1p2-: pblk 23101439 bad header/extent:
invalid extent entries - magic f30a, entries 8, max 340(340), depth
0(0)
[18018.970071] jbd2_journal_bmap: journal block not found at offset
4799 on nvme0n1p2-8
[18018.970076] Aborting journal on device nvme0n1p2-8.
[18018.970269] EXT4-fs error (device nvme0n1p2):
ext4_journal_check_start:61: Detected aborted journal
[18018.970316] EXT4-fs (nvme0n1p2): Remounting filesystem read-only


--
Best Regards,
Mike Gavrilov.

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