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kernel panic, inconsistent lock, vanilla 3.3.4, 32bit, tcp |
Hi Just got repeatable kernel panic on loaded proxy server Here is the log: Apr 29 00:38:17 10.0.15.2 kernel: [ 762.903868]Apr 29 00:38:17 10.0.15.2 kernel: [ 762.903880] ================================= Apr 29 00:38:17 10.0.15.2 kernel: [ 762.903890] [ INFO: inconsistent lock state ] Apr 29 00:38:17 10.0.15.2 kernel: [ 762.903903] 3.3.4-build-0061 #8 Not tainted Apr 29 00:38:17 10.0.15.2 kernel: [ 762.904133] --------------------------------- Apr 29 00:38:17 10.0.15.2 kernel: [ 762.904344] inconsistent {IN-SOFTIRQ-W} -> {SOFTIRQ-ON-W} usage. Apr 29 00:38:17 10.0.15.2 kernel: [ 762.904542] squid/1603 [HC0[0]:SC0[0]:HE1:SE1] takes: Apr 29 00:38:17 10.0.15.2 kernel: [ 762.904542] (key#3){+.?...}, at: [<c0232cc4>] __percpu_counter_sum+0xd/0x58 Apr 29 00:38:17 10.0.15.2 kernel: [ 762.904542] {IN-SOFTIRQ-W} state was registered at: Apr 29 00:38:17 10.0.15.2 kernel: [ 762.904542] [<c0158b84>] __lock_acquire+0x284/0xc26 Apr 29 00:38:17 10.0.15.2 kernel: [ 762.904542] [<c01598e8>] lock_acquire+0x71/0x85 Apr 29 00:38:17 10.0.15.2 kernel: [ 762.904542] [<c0349765>] _raw_spin_lock+0x33/0x40 Apr 29 00:38:17 10.0.15.2 kernel: [ 762.904542] [<c0232c93>] __percpu_counter_add+0x58/0x7c Apr 29 00:38:17 10.0.15.2 kernel: [ 762.904542] [<c02cfde1>] sk_clone_lock+0x1e5/0x200 Apr 29 00:38:17 10.0.15.2 kernel: [ 762.904542] [<c0303ee4>] inet_csk_clone_lock+0xe/0x78 Apr 29 00:38:17 10.0.15.2 kernel: [ 762.904542] [<c0315778>] tcp_create_openreq_child+0x1b/0x404 Apr 29 00:38:17 10.0.15.2 kernel: [ 762.904542] [<c031339c>] tcp_v4_syn_recv_sock+0x32/0x1c1 Apr 29 00:38:17 10.0.15.2 kernel: [ 762.904542] [<c031615a>] tcp_check_req+0x1fd/0x2d7 Apr 29 00:38:17 10.0.15.2 kernel: [ 762.904542] [<c0313f77>] tcp_v4_do_rcv+0xab/0x194 Apr 29 00:38:17 10.0.15.2 kernel: [ 762.904542] [<c03153bb>] tcp_v4_rcv+0x3b3/0x5cc Apr 29 00:38:17 10.0.15.2 kernel: [ 762.904542] [<c02fc0c4>] ip_local_deliver_finish+0x13a/0x1e9 Apr 29 00:38:17 10.0.15.2 kernel: [ 762.904542] [<c02fc539>] NF_HOOK.clone.11+0x46/0x4d Apr 29 00:38:17 10.0.15.2 kernel: [ 762.904542] [<c02fc652>] ip_local_deliver+0x41/0x45 Apr 29 00:38:17 10.0.15.2 kernel: [ 762.904542] [<c02fc4d1>] ip_rcv_finish+0x31a/0x33c Apr 29 00:38:17 10.0.15.2 kernel: [ 762.904542] [<c02fc539>] NF_HOOK.clone.11+0x46/0x4d Apr 29 00:38:17 10.0.15.2 kernel: [ 762.904542] [<c02fc857>] ip_rcv+0x201/0x23e Apr 29 00:38:17 10.0.15.2 kernel: [ 762.904542] [<c02daa3a>] __netif_receive_skb+0x319/0x368 Apr 29 00:38:17 10.0.15.2 kernel: [ 762.904542] [<c02dac07>] netif_receive_skb+0x4e/0x7d Apr 29 00:38:17 10.0.15.2 kernel: [ 762.904542] [<c02dacf6>] napi_skb_finish+0x1e/0x34 Apr 29 00:38:17 10.0.15.2 kernel: [ 762.904542] [<c02db122>] napi_gro_receive+0x20/0x24 Apr 29 00:38:17 10.0.15.2 kernel: [ 762.904542] [<f85d1743>] e1000_receive_skb+0x3f/0x45 [e1000e] Apr 29 00:38:17 10.0.15.2 kernel: [ 762.904542] [<f85d3464>] e1000_clean_rx_irq+0x1f9/0x284 [e1000e] Apr 29 00:38:17 10.0.15.2 kernel: [ 762.904542] [<f85d3926>] e1000_clean+0x62/0x1f4 [e1000e] Apr 29 00:38:17 10.0.15.2 kernel: [ 762.904542] [<c02db228>] net_rx_action+0x90/0x160 Apr 29 00:38:17 10.0.15.2 kernel: [ 762.904542] [<c012a445>] __do_softirq+0x7b/0x118 Apr 29 00:38:17 10.0.15.2 kernel: [ 762.904542] irq event stamp: 156915469 Apr 29 00:38:17 10.0.15.2 kernel: [ 762.904542] hardirqs last enabled at (156915469): [<c019b4f4>] __slab_alloc.clone.58.clone.63+0xc4/0x2de Apr 29 00:38:17 10.0.15.2 kernel: [ 762.904542] hardirqs last disabled at (156915468): [<c019b452>] __slab_alloc.clone.58.clone.63+0x22/0x2de Apr 29 00:38:17 10.0.15.2 kernel: [ 762.904542] softirqs last enabled at (156915466): [<c02ce677>] lock_sock_nested+0x64/0x6c Apr 29 00:38:17 10.0.15.2 kernel: [ 762.904542] softirqs last disabled at (156915464): [<c0349914>] _raw_spin_lock_bh+0xe/0x45
Apr 29 00:38:17 10.0.15.2 kernel: [ 762.904542]Apr 29 00:38:17 10.0.15.2 kernel: [ 762.904542] other info that might help us debug this: Apr 29 00:38:17 10.0.15.2 kernel: [ 762.904542] Possible unsafe locking scenario:
Apr 29 00:38:17 10.0.15.2 kernel: [ 762.904542] Apr 29 00:38:17 10.0.15.2 kernel: [ 762.904542] CPU0 Apr 29 00:38:17 10.0.15.2 kernel: [ 762.904542] ---- Apr 29 00:38:17 10.0.15.2 kernel: [ 762.904542] lock(key#3); Apr 29 00:38:17 10.0.15.2 kernel: [ 762.904542] <Interrupt> Apr 29 00:38:17 10.0.15.2 kernel: [ 762.904542] lock(key#3); Apr 29 00:38:17 10.0.15.2 kernel: [ 762.904542] Apr 29 00:38:17 10.0.15.2 kernel: [ 762.904542] *** DEADLOCK *** Apr 29 00:38:17 10.0.15.2 kernel: [ 762.904542]Apr 29 00:38:17 10.0.15.2 kernel: [ 762.904542] 1 lock held by squid/1603: Apr 29 00:38:17 10.0.15.2 kernel: [ 762.904542] #0: (sk_lock-AF_INET){+.+.+.}, at: [<c03055c0>] lock_sock+0xa/0xc
Apr 29 00:38:17 10.0.15.2 kernel: [ 762.904542] Apr 29 00:38:17 10.0.15.2 kernel: [ 762.904542] stack backtrace:Apr 29 00:38:17 10.0.15.2 kernel: [ 762.904542] Pid: 1603, comm: squid Not tainted 3.3.4-build-0061 #8
Apr 29 00:38:17 10.0.15.2 kernel: [ 762.904542] Call Trace:Apr 29 00:38:17 10.0.15.2 kernel: [ 762.904542] [<c0347b73>] ? printk+0x18/0x1d Apr 29 00:38:17 10.0.15.2 kernel: [ 762.904542] [<c015873a>] valid_state+0x1f6/0x201 Apr 29 00:38:17 10.0.15.2 kernel: [ 762.904542] [<c0158816>] mark_lock+0xd1/0x1bb Apr 29 00:38:17 10.0.15.2 kernel: [ 762.904542] [<c015876b>] ? mark_lock+0x26/0x1bb Apr 29 00:38:17 10.0.15.2 kernel: [ 762.904542] [<c015805d>] ? check_usage_forwards+0x77/0x77 Apr 29 00:38:17 10.0.15.2 kernel: [ 762.904542] [<c0158bf8>] __lock_acquire+0x2f8/0xc26 Apr 29 00:38:17 10.0.15.2 kernel: [ 762.904542] [<c0159b8e>] ? mark_held_locks+0x5d/0x7b Apr 29 00:38:17 10.0.15.2 kernel: [ 762.904542] [<c0159cf6>] ? trace_hardirqs_on+0xb/0xd Apr 29 00:38:17 10.0.15.2 kernel: [ 762.904542] [<c0158dd4>] ? __lock_acquire+0x4d4/0xc26 Apr 29 00:38:17 10.0.15.2 kernel: [ 762.904542] [<c01598e8>] lock_acquire+0x71/0x85 Apr 29 00:38:17 10.0.15.2 kernel: [ 762.904542] [<c0232cc4>] ? __percpu_counter_sum+0xd/0x58 Apr 29 00:38:17 10.0.15.2 kernel: [ 762.904542] [<c0349765>] _raw_spin_lock+0x33/0x40 Apr 29 00:38:17 10.0.15.2 kernel: [ 762.904542] [<c0232cc4>] ? __percpu_counter_sum+0xd/0x58 Apr 29 00:38:17 10.0.15.2 kernel: [ 762.904542] [<c0232cc4>] __percpu_counter_sum+0xd/0x58 Apr 29 00:38:17 10.0.15.2 kernel: [ 762.904542] [<c02cebc4>] __sk_mem_schedule+0xdd/0x1c7 Apr 29 00:38:17 10.0.15.2 kernel: [ 762.904542] [<c02d178d>] ? __alloc_skb+0x76/0x100 Apr 29 00:38:17 10.0.15.2 kernel: [ 762.904542] [<c0305e8e>] sk_wmem_schedule+0x21/0x2d Apr 29 00:38:17 10.0.15.2 kernel: [ 762.904542] [<c0306370>] sk_stream_alloc_skb+0x42/0xaa Apr 29 00:38:17 10.0.15.2 kernel: [ 762.904542] [<c0306567>] tcp_sendmsg+0x18f/0x68b Apr 29 00:38:17 10.0.15.2 kernel: [ 762.904542] [<c031f3dc>] ? ip_fast_csum+0x30/0x30 Apr 29 00:38:17 10.0.15.2 kernel: [ 762.904542] [<c0320193>] inet_sendmsg+0x53/0x5a Apr 29 00:38:17 10.0.15.2 kernel: [ 762.904542] [<c02cb633>] sock_aio_write+0xd2/0xda Apr 29 00:38:17 10.0.15.2 kernel: [ 762.904542] [<c015876b>] ? mark_lock+0x26/0x1bb Apr 29 00:38:17 10.0.15.2 kernel: [ 762.904542] [<c01a1017>] do_sync_write+0x9f/0xd9 Apr 29 00:38:17 10.0.15.2 kernel: [ 762.904542] [<c01a2111>] ? file_free_rcu+0x2f/0x2f Apr 29 00:38:17 10.0.15.2 kernel: [ 762.904542] [<c01a17a1>] vfs_write+0x8f/0xab Apr 29 00:38:17 10.0.15.2 kernel: [ 762.904542] [<c01a284d>] ? fget_light+0x75/0x7c Apr 29 00:38:17 10.0.15.2 kernel: [ 762.904542] [<c01a1900>] sys_write+0x3d/0x5e Apr 29 00:38:17 10.0.15.2 kernel: [ 762.904542] [<c0349ec9>] syscall_call+0x7/0xb Apr 29 00:38:17 10.0.15.2 kernel: [ 762.904542] [<c0340000>] ? rp_sidt+0x41/0x83
--- Denys Fedoryshchenko -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
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