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SubjectRe: INFO: rcu detected stall in corrupted
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On 5/21/18 12:13 PM, Eric Dumazet wrote:
>
>
> On 05/21/2018 11:09 AM, David Miller wrote:
>> From: syzbot <syzbot+f116bc1994efe725d51b@syzkaller.appspotmail.com>
>> Date: Mon, 21 May 2018 11:05:02 -0700
>>
>>> find_match+0x244/0x13a0 net/ipv6/route.c:691
>>> find_rr_leaf net/ipv6/route.c:729 [inline]
>>> rt6_select net/ipv6/route.c:779 [inline]
>>
>> Hmmm, endless loop in find_rr_leaf or similar?
>>
>
>
> I do not think so, this really looks like SCTP specific
> , we now have dozens of traces all sharing :
>
> sctp_transport_route+0xad/0x450 net/sctp/transport.c:293
> sctp_packet_config+0xb89/0xfd0 net/sctp/output.c:123
> sctp_outq_flush+0x79c/0x4370 net/sctp/outqueue.c:894
> sctp_outq_uncork+0x6a/0x80 net/sctp/outqueue.c:776
> sctp_cmd_interpreter net/sctp/sm_sideeffect.c:1820 [inline]
> sctp_side_effects net/sctp/sm_sideeffect.c:1220 [inline]
> sctp_do_sm+0x596/0x7160 net/sctp/sm_sideeffect.c:1191
> sctp_generate_heartbeat_event+0x218/0x450 net/sctp/sm_sideeffect.c:406
> call_timer_fn+0x230/0x940 kernel/time/timer.c:1326
>
>
> Some kind of infinite loop.
>
> When the hrtimer fires, it can point to any code that sits below but does not necessarily have a bug.
>

Just so we are looking at the right tree, the original message shows:

> HEAD commit: 771c577c23ba Linux 4.17-rc6
> git tree: upstream

I take that to mean this is Linus' tree.

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