lkml.org 
[lkml]   [2020]   [Sep]   [15]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
SubjectRe: INFO: task hung in vfs_setxattr (3)
From
Date


On 15.09.20 г. 7:59 ч., syzbot wrote:
> Hello,
>
> syzbot found the following issue on:
>
> HEAD commit: 7fe10096 Merge branch 'linus' of git://git.kernel.org/pub/..
> git tree: upstream
> console output: https://syzkaller.appspot.com/x/log.txt?x=140b0853900000
> kernel config: https://syzkaller.appspot.com/x/.config?x=a9075b36a6ae26c9
> dashboard link: https://syzkaller.appspot.com/bug?extid=738cca7d7d9754493513
> compiler: gcc (GCC) 10.1.0-syz 20200507
> syz repro: https://syzkaller.appspot.com/x/repro.syz?x=108d45a5900000
>
> The issue was bisected to:
>
> commit 6a3c7f5c87854e948c3c234e5f5e745c7c553722
> Author: Nikolay Borisov <nborisov@suse.com>
> Date: Thu May 28 08:05:13 2020 +0000
>
> btrfs: don't balance btree inode pages from buffered write path
>
> bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=14884d21900000
> final oops: https://syzkaller.appspot.com/x/report.txt?x=16884d21900000
> console output: https://syzkaller.appspot.com/x/log.txt?x=12884d21900000


Unlikely, that patch does change the performance characteristics because
now we don't balance metadata when doing buffered writes but I don't see
how it can lead to a hang.

\
 
 \ /
  Last update: 2020-09-15 09:27    [W:0.061 / U:3.540 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site