Jan  1 00:11:40 h2215 user.warn kernel: BUG: warning at kernel/mutex.c:281/__mutex_trylock_slowpath()
Jan  1 00:11:40 h2215 user.warn kernel: [<c0027e94>] (dump_stack+0x0/0x14) from [<c0057260>] (mutex_trylock+0x7c/0x1c4)
Jan  1 00:11:40 h2215 user.warn kernel: [<c00571e4>] (mutex_trylock+0x0/0x1c4) from [<c018b7b4>] (rtnl_trylock+0x14/0x1c)
Jan  1 00:11:40 h2215 user.warn kernel:  r6 = C269DC00  r5 = C2618CC0  r4 = C3EA0260
Jan  1 00:11:40 h2215 user.warn kernel: [<c018b7a0>] (rtnl_trylock+0x0/0x1c) from [<bf0b4838>] (br_min_mtu+0x18/0xa0 [bridge])
Jan  1 00:11:40 h2215 user.warn kernel: [<bf0b4820>] (br_min_mtu+0x0/0xa0 [bridge]) from [<bf0b5c74>] (br_device_event+0x7c/0x154 [bridge])
Jan  1 00:11:40 h2215 user.warn kernel:  r4 = C3EA0000
Jan  1 00:11:40 h2215 user.warn kernel: [<bf0b5bf8>] (br_device_event+0x0/0x154 [bridge]) from [<c004d5a0>] (notifier_call_chain+0x2c/0x58)
Jan  1 00:11:40 h2215 user.warn kernel:  r7 = 00000000  r6 = 00000007  r5 = C269DC00  r4 = BF0BE520
Jan  1 00:11:40 h2215 user.warn kernel: [<c004d574>] (notifier_call_chain+0x0/0x58) from [<c004d604>] (raw_notifier_call_chain+0x10/0x14)
Jan  1 00:11:40 h2215 user.warn kernel:  r6 = C2695EC0  r5 = C269DC00  r4 = C269DC00
Jan  1 00:11:40 h2215 user.warn kernel: [<c004d5f4>] (raw_notifier_call_chain+0x0/0x14) from [<c0180ba8>] (dev_set_mtu+0x80/0x94)
Jan  1 00:11:40 h2215 user.warn kernel: [<c0180b28>] (dev_set_mtu+0x0/0x94) from [<c0182790>] (dev_ifsioc+0x15c/0x3e8)
Jan  1 00:11:40 h2215 user.warn kernel:  r4 = 00008922
Jan  1 00:11:40 h2215 user.warn kernel: [<c0182634>] (dev_ifsioc+0x0/0x3e8) from [<c0183e38>] (dev_ioctl+0x4d0/0x630)
Jan  1 00:11:40 h2215 user.warn kernel:  r6 = 00000000  r5 = 00008922  r4 = C2695EC0
Jan  1 00:11:40 h2215 user.warn kernel: [<c0183968>] (dev_ioctl+0x0/0x630) from [<c017692c>] (sock_ioctl+0x200/0x244)
Jan  1 00:11:40 h2215 user.warn kernel: [<c017672c>] (sock_ioctl+0x0/0x244) from [<c009534c>] (do_ioctl+0x38/0x98)
Jan  1 00:11:40 h2215 user.warn kernel:  r6 = BEB3BBF0  r5 = 00008922  r4 = C38557C0
Jan  1 00:11:40 h2215 user.warn kernel: [<c0095314>] (do_ioctl+0x0/0x98) from [<c0095664>] (vfs_ioctl+0x2b8/0x2e8)
Jan  1 00:11:40 h2215 user.warn kernel:  r6 = BEB3BBF0  r5 = C26D0308  r4 = C38557C0
Jan  1 00:11:40 h2215 user.warn kernel: [<c00953ac>] (vfs_ioctl+0x0/0x2e8) from [<c00956d4>] (sys_ioctl+0x40/0x64)
Jan  1 00:11:40 h2215 user.warn kernel:  r9 = C2694000  r8 = C0021F68  r6 = 00008922  r5 = FFFFFFF7
Jan  1 00:11:40 h2215 user.warn kernel:  r4 = C38557C0
Jan  1 00:11:40 h2215 user.warn kernel: [<c0095694>] (sys_ioctl+0x0/0x64) from [<c0021dc0>] (ret_fast_syscall+0x0/0x2c)
Jan  1 00:11:40 h2215 user.warn kernel:  r6 = BEB3BE10  r5 = 00000010  r4 = BEB3BBF0