On Tue, Mar 14, 2017 at 11:35:33AM +0800, Xin Long wrote:
> >> > [ 245.416594] (
> >> > [ 245.424928] sk_lock-AF_INET
> >> > [ 245.433279] ){+.+.+.}
> >> > [ 245.441889] , at: [<ffffffffa0302fd0>] sctp_sendmsg+0x330/0xfe0 [sctp]
> >> > [ 245.450167]
> >> > stack backtrace:
> >> > [ 245.466352] CPU: 3 PID: 1781 Comm: trinity-c30 Not tainted 4.10.0-think+ #7
> >> > [ 245.482894] Call Trace:
> >> > [ 245.491096] dump_stack+0x68/0x93
> >> > [ 245.499314] lockdep_rcu_suspicious+0xce/0xf0
> >> > [ 245.507610] sctp_hash_transport+0x6c0/0x7e0 [sctp]
> >> > [ 245.515972] ? sctp_endpoint_bh_rcv+0x171/0x290 [sctp]
> >> > [ 245.524366] sctp_assoc_add_peer+0x290/0x3c0 [sctp]
> >> > [ 245.532736] sctp_sendmsg+0x8f7/0xfe0 [sctp]
> >> > [ 245.541040] ? rw_copy_check_uvector+0x8e/0x190
> >> > [ 245.549402] ? import_iovec+0x3a/0xe0
> >> > [ 245.557679] inet_sendmsg+0x49/0x1e0
> >> > [ 245.565887] ___sys_sendmsg+0x2d4/0x300
> >> > [ 245.574092] ? debug_smp_processor_id+0x17/0x20
> >> > [ 245.582342] ? debug_smp_processor_id+0x17/0x20
> >> > [ 245.590508] ? get_lock_stats+0x19/0x50
> >> > [ 245.598641] __sys_sendmsg+0x54/0x90
> >> > [ 245.606745] SyS_sendmsg+0x12/0x20
> >> > [ 245.614784] do_syscall_64+0x66/0x1d0
> >> > [ 245.622828] entry_SYSCALL64_slow_path+0x25/0x25
> >> > [ 245.630894] RIP: 0033:0x7fe095fcb0f9
> >> > [ 245.638962] RSP: 002b:00007ffc5601b1d8 EFLAGS: 00000246
> >> > [ 245.647071] ORIG_RAX: 000000000000002e
> >> > [ 245.655186] RAX: ffffffffffffffda RBX: 000000000000002e RCX: 00007fe095fcb0f9
> >> > [ 245.663435] RDX: 0000000000000080 RSI: 00005592de12ddc0 RDI: 000000000000012d
> >> > [ 245.671776] RBP: 00007fe0965c8000 R08: 000000000000c000 R09: 00000000000000dc
> >> > [ 245.680111] R10: 0003021200000088 R11: 0000000000000246 R12: 0000000000000002
> >> > [ 245.688460] R13: 00007fe0965c8048 R14: 00007fe0966a1ad8 R15: 00007fe0965c8000
> >> >
> >>
> >> Cc'ing Xin and linux-sctp@ mailing list.
> >
> > Seems the same as Andrey Konovalov had reported?
> >
> I would think so, this patch has fixed it:
>
> commit 5179b26694c92373275e4933f5d0ff32d585c675
> Author: Xin Long <lucien.xin@xxxxxxxxx>
> Date: Tue Feb 28 12:41:29 2017 +0800
>
> sctp: call rcu_read_lock before checking for duplicate transport nodes
>
> not sure which commit your tests are based on, Dave, can you
> check if this fix has been in your test kernel?
Haven't seen this in a while. Let's call it fixed.
Dave
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