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Message-ID: <20170224222110.csrufaq73lq3twy2@codemonkey.org.uk>
Date: Fri, 24 Feb 2017 17:21:10 -0500
From: Dave Jones <davej@...emonkey.org.uk>
To: netdev@...r.kernel.org
Subject: [4.10+] sctp lockdep trace
[ 244.251557] ===============================
[ 244.263321] [ ERR: suspicious RCU usage. ]
[ 244.274982] 4.10.0-think+ #7 Not tainted
[ 244.286511] -------------------------------
[ 244.298008] ./include/linux/rhashtable.h:602 suspicious rcu_dereference_check() usage!
[ 244.309665]
other info that might help us debug this:
[ 244.344629]
rcu_scheduler_active = 2, debug_locks = 1
[ 244.367839] 1 lock held by trinity-c30/1781:
[ 244.379481] #0:
[ 244.390848] (
[ 244.402372] sk_lock-AF_INET
[ 244.413825] ){+.+.+.}
[ 244.425231] , at: [<ffffffffa0302fd0>] sctp_sendmsg+0x330/0xfe0 [sctp]
[ 244.436774]
stack backtrace:
[ 244.459620] CPU: 3 PID: 1781 Comm: trinity-c30 Not tainted 4.10.0-think+ #7
[ 244.482790] Call Trace:
[ 244.494201] dump_stack+0x68/0x93
[ 244.505598] lockdep_rcu_suspicious+0xce/0xf0
[ 244.516924] sctp_hash_transport+0x406/0x7e0 [sctp]
[ 244.528137] ? sctp_endpoint_bh_rcv+0x171/0x290 [sctp]
[ 244.539243] sctp_assoc_add_peer+0x290/0x3c0 [sctp]
[ 244.550291] sctp_sendmsg+0x8f7/0xfe0 [sctp]
[ 244.561258] ? rw_copy_check_uvector+0x8e/0x190
[ 244.572308] ? import_iovec+0x3a/0xe0
[ 244.583232] inet_sendmsg+0x49/0x1e0
[ 244.594150] ___sys_sendmsg+0x2d4/0x300
[ 244.605002] ? debug_smp_processor_id+0x17/0x20
[ 244.615844] ? debug_smp_processor_id+0x17/0x20
[ 244.626533] ? get_lock_stats+0x19/0x50
[ 244.637141] __sys_sendmsg+0x54/0x90
[ 244.647817] SyS_sendmsg+0x12/0x20
[ 244.658400] do_syscall_64+0x66/0x1d0
[ 244.668990] entry_SYSCALL64_slow_path+0x25/0x25
[ 244.679582] RIP: 0033:0x7fe095fcb0f9
[ 244.690079] RSP: 002b:00007ffc5601b1d8 EFLAGS: 00000246
[ 244.700704] ORIG_RAX: 000000000000002e
[ 244.711248] RAX: ffffffffffffffda RBX: 000000000000002e RCX: 00007fe095fcb0f9
[ 244.721818] RDX: 0000000000000080 RSI: 00005592de12ddc0 RDI: 000000000000012d
[ 244.732282] RBP: 00007fe0965c8000 R08: 000000000000c000 R09: 00000000000000dc
[ 244.742576] R10: 0003021200000088 R11: 0000000000000246 R12: 0000000000000002
[ 244.752804] R13: 00007fe0965c8048 R14: 00007fe0966a1ad8 R15: 00007fe0965c8000
[ 244.775549] ===============================
[ 244.785875] [ ERR: suspicious RCU usage. ]
[ 244.796951] 4.10.0-think+ #7 Not tainted
[ 244.807185] -------------------------------
[ 244.819213] ./include/linux/rhashtable.h:605 suspicious rcu_dereference_check() usage!
[ 244.829420]
other info that might help us debug this:
[ 244.859963]
rcu_scheduler_active = 2, debug_locks = 1
[ 244.879766] 1 lock held by trinity-c30/1781:
[ 244.889953] #0:
[ 244.900000] (
[ 244.909854] sk_lock-AF_INET
[ 244.919645] ){+.+.+.}
[ 244.929238] , at: [<ffffffffa0302fd0>] sctp_sendmsg+0x330/0xfe0 [sctp]
[ 244.939167]
stack backtrace:
[ 244.958506] CPU: 3 PID: 1781 Comm: trinity-c30 Not tainted 4.10.0-think+ #7
[ 244.978102] Call Trace:
[ 244.987735] dump_stack+0x68/0x93
[ 244.997112] lockdep_rcu_suspicious+0xce/0xf0
[ 245.006588] sctp_hash_transport+0x4ca/0x7e0 [sctp]
[ 245.016264] ? sctp_endpoint_bh_rcv+0x171/0x290 [sctp]
[ 245.025797] sctp_assoc_add_peer+0x290/0x3c0 [sctp]
[ 245.035380] sctp_sendmsg+0x8f7/0xfe0 [sctp]
[ 245.044883] ? rw_copy_check_uvector+0x8e/0x190
[ 245.054464] ? import_iovec+0x3a/0xe0
[ 245.064016] inet_sendmsg+0x49/0x1e0
[ 245.073516] ___sys_sendmsg+0x2d4/0x300
[ 245.082967] ? debug_smp_processor_id+0x17/0x20
[ 245.092448] ? debug_smp_processor_id+0x17/0x20
[ 245.101850] ? get_lock_stats+0x19/0x50
[ 245.111170] __sys_sendmsg+0x54/0x90
[ 245.120451] SyS_sendmsg+0x12/0x20
[ 245.129649] do_syscall_64+0x66/0x1d0
[ 245.138783] entry_SYSCALL64_slow_path+0x25/0x25
[ 245.147678] RIP: 0033:0x7fe095fcb0f9
[ 245.156588] RSP: 002b:00007ffc5601b1d8 EFLAGS: 00000246
[ 245.165503] ORIG_RAX: 000000000000002e
[ 245.174601] RAX: ffffffffffffffda RBX: 000000000000002e RCX: 00007fe095fcb0f9
[ 245.183861] RDX: 0000000000000080 RSI: 00005592de12ddc0 RDI: 000000000000012d
[ 245.193038] RBP: 00007fe0965c8000 R08: 000000000000c000 R09: 00000000000000dc
[ 245.202214] R10: 0003021200000088 R11: 0000000000000246 R12: 0000000000000002
[ 245.211261] R13: 00007fe0965c8048 R14: 00007fe0966a1ad8 R15: 00007fe0965c8000
[ 245.308216] ===============================
[ 245.317295] [ ERR: suspicious RCU usage. ]
[ 245.327876] 4.10.0-think+ #7 Not tainted
[ 245.337065] -------------------------------
[ 245.345840] ./include/linux/rhashtable.h:616 suspicious rcu_dereference_check() usage!
[ 245.356501]
other info that might help us debug this:
[ 245.382185]
rcu_scheduler_active = 2, debug_locks = 1
[ 245.399415] 1 lock held by trinity-c30/1781:
[ 245.408138] #0:
[ 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
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