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Subject2.6.17-mm3 -- BUG: illegal lock usage -- illegal {softirq-on-W} -> {in-softirq-R} usage.
[ BUG: illegal lock usage! ]
----------------------------
illegal {softirq-on-W} -> {in-softirq-R} usage.
java_vm/4418 [HC0[0]:SC1[1]:HE1:SE0] takes:
(&sk->sk_dst_lock){---?}, at: [<c119d0a9>] sk_dst_check+0x1b/0xe6
{softirq-on-W} state was registered at:
[<c102d1c8>] lock_acquire+0x60/0x80
[<c12012d7>] _write_lock+0x23/0x32
[<c11ddbe7>] inet_bind+0x16c/0x1cc
[<c119ae58>] sys_bind+0x61/0x80
[<c119b465>] sys_socketcall+0x7d/0x186
[<c1002d6d>] sysenter_past_esp+0x56/0x8d
irq event stamp: 11052
hardirqs last enabled at (11052): [<c105d454>] kmem_cache_alloc+0x89/0xa6
hardirqs last disabled at (11051): [<c105d405>] kmem_cache_alloc+0x3a/0xa6
softirqs last enabled at (11040): [<c11a506d>] dev_queue_xmit+0x224/0x24b
softirqs last disabled at (11041): [<c1004a64>] do_softirq+0x58/0xbd
other info that might help us debug this:
1 lock held by java_vm/4418:
#0: (af_family_keys + (sk)->sk_family#4){-+..}, at: [<f93c9281>]
tcp_v6_rcv+0x308/0x7b7 [ipv6]
stack backtrace:
[<c1003502>] show_trace_log_lvl+0x54/0xfd
[<c1003b6a>] show_trace+0xd/0x10
[<c1003c0e>] dump_stack+0x19/0x1b
[<c102b833>] print_usage_bug+0x1cc/0x1d9
[<c102bd34>] mark_lock+0x193/0x360
[<c102c94a>] __lock_acquire+0x3b7/0x970
[<c102d1c8>] lock_acquire+0x60/0x80
[<c12013eb>] _read_lock+0x23/0x32
[<c119d0a9>] sk_dst_check+0x1b/0xe6
[<f93ae479>] ip6_dst_lookup+0x31/0x172 [ipv6]
[<f93c7065>] tcp_v6_send_synack+0x10f/0x238 [ipv6]
[<f93c7dc5>] tcp_v6_conn_request+0x281/0x2c7 [ipv6]
[<c11cca33>] tcp_rcv_state_process+0x5d/0xbde
[<f93c7414>] tcp_v6_do_rcv+0x26d/0x384 [ipv6]
[<f93c96d6>] tcp_v6_rcv+0x75d/0x7b7 [ipv6]
[<f93afadd>] ip6_input+0x201/0x2d1 [ipv6]
[<f93b002d>] ipv6_rcv+0x190/0x1bf [ipv6]
[<c11a3200>] netif_receive_skb+0x2e6/0x37f
[<c11a4b81>] process_backlog+0x80/0x112
[<c11a4c9e>] net_rx_action+0x8b/0x1e8
[<c101a711>] __do_softirq+0x55/0xb0
[<c1004a64>] do_softirq+0x58/0xbd
[<c101a978>] local_bh_enable+0xd0/0x107
[<c11a506d>] dev_queue_xmit+0x224/0x24b
[<c11a9bb8>] neigh_resolve_output+0x1e2/0x20e
[<f93add64>] ip6_output2+0x1de/0x1fc [ipv6]
[<f93ae41e>] ip6_output+0x69c/0x6c6 [ipv6]
[<f93aeb58>] ip6_xmit+0x22b/0x295 [ipv6]
[<f93cc893>] inet6_csk_xmit+0x200/0x20e [ipv6]
[<c11cea04>] tcp_transmit_skb+0x5de/0x60c
[<c11d0cd7>] tcp_connect+0x2bb/0x31a
[<f93c894a>] tcp_v6_connect+0x520/0x655 [ipv6]
[<c11dd889>] inet_stream_connect+0x83/0x20f
[<c119adda>] sys_connect+0x67/0x84
[<c119b474>] sys_socketcall+0x8c/0x186
[<c1002d6d>] sysenter_past_esp+0x56/0x8d
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