On Thu, Aug 19, 2021 at 01:10:18AM -0700, syzbot wrote:
Hello,
syzbot found the following issue on:
HEAD commit: 614cb2751d31 Merge tag 'trace-v5.14-rc6' of git://git.kern.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=130112c5300000 kernel config: https://syzkaller.appspot.com/x/.config?x=f61012d0b1cd846f dashboard link: https://syzkaller.appspot.com/bug?extid=13146364637c7363a7de compiler: Debian clang version 11.0.1-2, GNU ld (GNU Binutils for Debian) 2.35.1 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=104d7cc5300000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=1333ce0e300000
The issue was bisected to:
commit a154d5d83d21af6b9ee32adc5dbcea5ac1fb534c Author: Arnd Bergmann arnd@arndb.de Date: Mon Mar 4 20:38:03 2019 +0000
net: ignore sysctl_devconf_inherit_init_net without SYSCTLbisection log: https://syzkaller.appspot.com/x/bisect.txt?x=13f970b6300000 final oops: https://syzkaller.appspot.com/x/report.txt?x=100570b6300000 console output: https://syzkaller.appspot.com/x/log.txt?x=17f970b6300000
In case it wasn't obvious, this is a bogus bisection. It's a bug ext4's inline_data support where there is a race between writing to an inline_data file against setting extended attributes on that same inline_data file.
Fix is coming up....
- Ted