[rds-devel] WARNING in rds_message_alloc_sgs
Santosh Shilimkar
santosh.shilimkar at oracle.com
Tue Oct 30 12:38:02 PDT 2018
On 10/30/2018 12:28 PM, syzbot wrote:
> Hello,
>
> syzbot found the following crash on:
>
> HEAD commit: 6201f31a39f8 Add linux-next specific files for 20181030
> git tree: linux-next
> console output: https://syzkaller.appspot.com/x/log.txt?x=1397d06d400000
> kernel config: https://syzkaller.appspot.com/x/.config?x=2a22859d870756c1
> dashboard link:
> https://syzkaller.appspot.com/bug?extid=26de17458aeda9d305d8
> compiler: gcc (GCC) 8.0.1 20180413 (experimental)
> syz repro: https://syzkaller.appspot.com/x/repro.syz?x=10bb52eb400000
> C reproducer: https://syzkaller.appspot.com/x/repro.c?x=118bdfc5400000
>
> IMPORTANT: if you fix the bug, please add the following tag to the commit:
> Reported-by: syzbot+26de17458aeda9d305d8 at syzkaller.appspotmail.com
>
> WARNING: CPU: 0 PID: 19789 at net/rds/message.c:316
> rds_message_alloc_sgs+0x10c/0x160 net/rds/message.c:316
> Kernel panic - not syncing: panic_on_warn set ...
Looks like this kernel build has panic on warn enabled which
triggers panic for " WARN_ON(!nr_pages)" case. Will look into
it. Thanks !!
Regards,
Santosh
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