gfs2: fsid=_h: Trying to join cluster "lock_nolock", "_h" gfs2: fsid=_h: Now mounting FS... gfs2: fsid=_h: can't read superblock: -22 bridge0: port 2(bridge_slave_1) entered disabled state bridge0: port 1(bridge_slave_0) entered disabled state INFO: task syz-executor.4:18258 blocked for more than 140 seconds. Not tainted 4.19.111-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.4 D28896 18258 8159 0x00000004 Call Trace: schedule+0x8d/0x1b0 kernel/sched/core.c:3559 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:3617 __mutex_lock_common kernel/locking/mutex.c:1002 [inline] __mutex_lock+0x726/0x1300 kernel/locking/mutex.c:1072 rtnl_lock net/core/rtnetlink.c:77 [inline] rtnetlink_rcv_msg+0x3fe/0xaf0 net/core/rtnetlink.c:4774 netlink_rcv_skb+0x160/0x410 net/netlink/af_netlink.c:2455 netlink_unicast_kernel net/netlink/af_netlink.c:1318 [inline] netlink_unicast+0x4d7/0x6a0 net/netlink/af_netlink.c:1344 netlink_sendmsg+0x80b/0xcd0 net/netlink/af_netlink.c:1909 sock_sendmsg_nosec net/socket.c:622 [inline] sock_sendmsg+0xcf/0x120 net/socket.c:632 ___sys_sendmsg+0x803/0x920 net/socket.c:2115 __sys_sendmsg+0xec/0x1b0 net/socket.c:2153 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x45c849 Code: Bad RIP value. RSP: 002b:00007f8d3bf5dc78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007f8d3bf5e6d4 RCX: 000000000045c849 RDX: 0000000000000000 RSI: 00000000200000c0 RDI: 0000000000000004 RBP: 000000000076bf00 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff R13: 00000000000009f8 R14: 00000000004ccb00 R15: 000000000076bf0c Showing all locks held in the system: 1 lock held by khungtaskd/1079: #0: 0000000027c44a89 (rcu_read_lock){....}, at: debug_show_all_locks+0x53/0x265 kernel/locking/lockdep.c:4436 1 lock held by rsyslogd/7979: #0: 00000000acec61f7 (&f->f_pos_lock){+.+.}, at: __fdget_pos+0xe3/0x100 fs/file.c:767 2 locks held by getty/8101: #0: 000000008bb5ec96 (&tty->ldisc_sem){++++}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:272 #1: 00000000a89f99f7 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x217/0x1a50 drivers/tty/n_tty.c:2154 2 locks held by getty/8102: #0: 00000000a7eae878 (&tty->ldisc_sem){++++}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:272 #1: 000000007892668a (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x217/0x1a50 drivers/tty/n_tty.c:2154 2 locks held by getty/8103: #0: 0000000054dc513c (&tty->ldisc_sem){++++}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:272 #1: 0000000053111cfd (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x217/0x1a50 drivers/tty/n_tty.c:2154 2 locks held by getty/8104: #0: 0000000001f6ae82 (&tty->ldisc_sem){++++}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:272 #1: 000000008efa9308 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x217/0x1a50 drivers/tty/n_tty.c:2154 2 locks held by getty/8105: #0: 0000000035224ff5 (&tty->ldisc_sem){++++}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:272 #1: 00000000a19ae4ee (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x217/0x1a50 drivers/tty/n_tty.c:2154 2 locks held by getty/8106: #0: 00000000c2ef8b8a (&tty->ldisc_sem){++++}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:272 #1: 000000004b83005d (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x217/0x1a50 drivers/tty/n_tty.c:2154 2 locks held by getty/8107: #0: 00000000d9e21c33 (&tty->ldisc_sem){++++}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:272 #1: 00000000445e08b4 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x217/0x1a50 drivers/tty/n_tty.c:2154 3 locks held by kworker/0:4/8184: #0: 00000000dfca37d6 ((wq_completion)"%s"("ipv6_addrconf")){+.+.}, at: __write_once_size include/linux/compiler.h:220 [inline] #0: 00000000dfca37d6 ((wq_completion)"%s"("ipv6_addrconf")){+.+.}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: 00000000dfca37d6 ((wq_completion)"%s"("ipv6_addrconf")){+.+.}, at: atomic64_set include/asm-generic/atomic-instrumented.h:40 [inline] #0: 00000000dfca37d6 ((wq_completion)"%s"("ipv6_addrconf")){+.+.}, at: atomic_long_set include/asm-generic/atomic-long.h:59 [inline] #0: 00000000dfca37d6 ((wq_completion)"%s"("ipv6_addrconf")){+.+.}, at: set_work_data kernel/workqueue.c:617 [inline] #0: 00000000dfca37d6 ((wq_completion)"%s"("ipv6_addrconf")){+.+.}, at: set_work_pool_and_clear_pending kernel/workqueue.c:644 [inline] #0: 00000000dfca37d6 ((wq_completion)"%s"("ipv6_addrconf")){+.+.}, at: process_one_work+0x81a/0x1640 kernel/workqueue.c:2126 #1: 00000000373f3f83 ((addr_chk_work).work){+.+.}, at: process_one_work+0x84e/0x1640 kernel/workqueue.c:2130 #2: 000000006e18bcad (rtnl_mutex){+.+.}, at: addrconf_verify_work+0xa/0x20 net/ipv6/addrconf.c:4471 3 locks held by kworker/0:0/7297: #0: 000000006ca255ef ((wq_completion)"events"){+.+.}, at: __write_once_size include/linux/compiler.h:220 [inline] #0: 000000006ca255ef ((wq_completion)"events"){+.+.}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: 000000006ca255ef ((wq_completion)"events"){+.+.}, at: atomic64_set include/asm-generic/atomic-instrumented.h:40 [inline] #0: 000000006ca255ef ((wq_completion)"events"){+.+.}, at: atomic_long_set include/asm-generic/atomic-long.h:59 [inline] #0: 000000006ca255ef ((wq_completion)"events"){+.+.}, at: set_work_data kernel/workqueue.c:617 [inline] #0: 000000006ca255ef ((wq_completion)"events"){+.+.}, at: set_work_pool_and_clear_pending kernel/workqueue.c:644 [inline] #0: 000000006ca255ef ((wq_completion)"events"){+.+.}, at: process_one_work+0x81a/0x1640 kernel/workqueue.c:2126 #1: 00000000e4b5a964 ((linkwatch_work).work){+.+.}, at: process_one_work+0x84e/0x1640 kernel/workqueue.c:2130 #2: 000000006e18bcad (rtnl_mutex){+.+.}, at: linkwatch_event+0xb/0x60 net/core/link_watch.c:236 4 locks held by kworker/u4:5/7631: 3 locks held by kworker/0:1/2791: #0: 000000006ca255ef ((wq_completion)"events"){+.+.}, at: __write_once_size include/linux/compiler.h:220 [inline] #0: 000000006ca255ef ((wq_completion)"events"){+.+.}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: 000000006ca255ef ((wq_completion)"events"){+.+.}, at: atomic64_set include/asm-generic/atomic-instrumented.h:40 [inline] #0: 000000006ca255ef ((wq_completion)"events"){+.+.}, at: atomic_long_set include/asm-generic/atomic-long.h:59 [inline] #0: 000000006ca255ef ((wq_completion)"events"){+.+.}, at: set_work_data kernel/workqueue.c:617 [inline] #0: 000000006ca255ef ((wq_completion)"events"){+.+.}, at: set_work_pool_and_clear_pending kernel/workqueue.c:644 [inline] #0: 000000006ca255ef ((wq_completion)"events"){+.+.}, at: process_one_work+0x81a/0x1640 kernel/workqueue.c:2126 #1: 00000000e70763bc (deferred_process_work){+.+.}, at: process_one_work+0x84e/0x1640 kernel/workqueue.c:2130 #2: 000000006e18bcad (rtnl_mutex){+.+.}, at: switchdev_deferred_process_work+0xa/0x20 net/switchdev/switchdev.c:150 2 locks held by syz-executor.2/17727: 1 lock held by syz-executor.4/18258: #0: 000000006e18bcad (rtnl_mutex){+.+.}, at: rtnl_lock net/core/rtnetlink.c:77 [inline] #0: 000000006e18bcad (rtnl_mutex){+.+.}, at: rtnetlink_rcv_msg+0x3fe/0xaf0 net/core/rtnetlink.c:4774 ============================================= NMI backtrace for cpu 0 CPU: 0 PID: 1079 Comm: khungtaskd Not tainted 4.19.111-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x188/0x20d lib/dump_stack.c:118 nmi_cpu_backtrace.cold+0x63/0xa2 lib/nmi_backtrace.c:101 nmi_trigger_cpumask_backtrace+0x1a6/0x1eb lib/nmi_backtrace.c:62 trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:203 [inline] watchdog+0x962/0xe40 kernel/hung_task.c:287 kthread+0x34a/0x420 kernel/kthread.c:246 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 17727 Comm: syz-executor.2 Not tainted 4.19.111-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:rcu_lockdep_current_cpu_online kernel/rcu/tree.c:1077 [inline] RIP: 0010:rcu_lockdep_current_cpu_online+0x39/0x1b0 kernel/rcu/tree.c:1068 Code: 05 e4 30 37 08 85 c0 75 06 b8 01 00 00 00 c3 41 55 bf 01 00 00 00 41 54 55 53 48 83 ec 08 e8 8e a5 f0 ff 48 8b 05 e7 60 63 07 <4c> 8d a0 f8 e9 ff ff 48 3d e0 65 b9 88 0f 84 fe 00 00 00 48 bd 00 RSP: 0018:ffff8880ae707f88 EFLAGS: 00000097 RAX: ffffffff88b962c8 RBX: ffffffff88fc5180 RCX: 0000000000000000 RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000001 RBP: 0000000000000000 R08: ffff88805452e600 R09: ffffed1015ce4733 R10: ffffed1015ce4732 R11: ffff8880ae723993 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 FS: 00007f103a1a4700(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000c430e320b0 CR3: 00000000a3c66000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: rcu_read_lock_sched_held+0x92/0x130 kernel/rcu/update.c:115 trace_local_timer_exit arch/x86/include/asm/trace/irq_vectors.h:56 [inline] smp_apic_timer_interrupt+0x3c5/0x550 arch/x86/kernel/apic/apic.c:1093 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:893 RIP: 0010:should_resched arch/x86/include/asm/preempt.h:99 [inline] RIP: 0010:__local_bh_enable_ip+0x18d/0x270 kernel/softirq.c:196 Code: 00 00 00 00 fc ff df 48 c1 e8 03 80 3c 10 00 0f 85 dd 00 00 00 48 83 3d f8 1b 74 07 00 0f 84 8d 00 00 00 fb 66 0f 1f 44 00 00 <65> 8b 05 1c b3 c3 7e 85 c0 74 7d 5b 5d 41 5c c3 80 3d 32 7f 48 08 RSP: 0018:ffff88803dbe6b48 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13 RAX: 1ffffffff1164ad3 RBX: 0000000000000200 RCX: 1ffff1100a8a5dd4 RDX: dffffc0000000000 RSI: ffff88805452ee80 RDI: ffff88805452ee7c RBP: ffffffff85ca92f1 R08: ffff88805452e600 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: ffff88805452e600 R13: 0000000000000001 R14: dffffc0000000000 R15: 0000000000000000 local_bh_enable include/linux/bottom_half.h:32 [inline] get_next_corpse net/netfilter/nf_conntrack_core.c:1928 [inline] nf_ct_iterate_cleanup+0x217/0x4b0 net/netfilter/nf_conntrack_core.c:1951 nf_ct_iterate_cleanup_net net/netfilter/nf_conntrack_core.c:2036 [inline] nf_ct_iterate_cleanup_net+0x113/0x170 net/netfilter/nf_conntrack_core.c:2021 masq_device_event+0xd6/0x110 net/ipv4/netfilter/nf_nat_masquerade_ipv4.c:100 notifier_call_chain+0xc0/0x230 kernel/notifier.c:93 call_netdevice_notifiers net/core/dev.c:1766 [inline] __dev_notify_flags+0x1e9/0x2c0 net/core/dev.c:7703 dev_change_flags+0xf0/0x140 net/core/dev.c:7737 do_setlink+0x1601/0x3510 net/core/rtnetlink.c:2449 rtnl_group_changelink net/core/rtnetlink.c:2925 [inline] rtnl_newlink+0xc7e/0x1440 net/core/rtnetlink.c:3083 rtnetlink_rcv_msg+0x453/0xaf0 net/core/rtnetlink.c:4777 netlink_rcv_skb+0x160/0x410 net/netlink/af_netlink.c:2455 netlink_unicast_kernel net/netlink/af_netlink.c:1318 [inline] netlink_unicast+0x4d7/0x6a0 net/netlink/af_netlink.c:1344 netlink_sendmsg+0x80b/0xcd0 net/netlink/af_netlink.c:1909 sock_sendmsg_nosec net/socket.c:622 [inline] sock_sendmsg+0xcf/0x120 net/socket.c:632 ___sys_sendmsg+0x803/0x920 net/socket.c:2115 __sys_sendmsg+0xec/0x1b0 net/socket.c:2153 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x45c849 Code: ad b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 7b b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f103a1a3c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007f103a1a46d4 RCX: 000000000045c849 RDX: 0000000000000000 RSI: 0000000020000140 RDI: 0000000000000005 RBP: 000000000076bf00 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff R13: 00000000000009f8 R14: 00000000004ccb00 R15: 000000000076bf0c