protocol 88fb is buggy, dev hsr_slave_1 protocol 88fb is buggy, dev hsr_slave_0 protocol 88fb is buggy, dev hsr_slave_1 protocol 88fb is buggy, dev hsr_slave_0 protocol 88fb is buggy, dev hsr_slave_1 INFO: task syz-executor.0:12553 blocked for more than 140 seconds. Not tainted 4.19.37 #5 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.0 D29496 12553 7615 0x00000004 Call Trace: context_switch kernel/sched/core.c:2826 [inline] __schedule+0x813/0x1d00 kernel/sched/core.c:3474 schedule+0x92/0x1c0 kernel/sched/core.c:3518 __rwsem_down_write_failed_common kernel/locking/rwsem-xadd.c:573 [inline] rwsem_down_write_failed+0x774/0xcc0 kernel/locking/rwsem-xadd.c:602 call_rwsem_down_write_failed+0x17/0x30 arch/x86/lib/rwsem.S:117 __down_write arch/x86/include/asm/rwsem.h:142 [inline] down_write+0x53/0x90 kernel/locking/rwsem.c:72 register_netdevice_notifier+0x7e/0x630 net/core/dev.c:1642 raw_init+0x299/0x340 net/can/raw.c:343 can_create+0x28a/0x4b0 net/can/af_can.c:183 __sock_create+0x3e6/0x750 net/socket.c:1276 sock_create net/socket.c:1316 [inline] __sys_socket+0x103/0x220 net/socket.c:1346 __do_sys_socket net/socket.c:1355 [inline] __se_sys_socket net/socket.c:1353 [inline] __x64_sys_socket+0x73/0xb0 net/socket.c:1353 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x458da9 Code: Bad RIP value. RSP: 002b:00007f0e97bf5c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000029 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000458da9 RDX: 0000000000000001 RSI: 0000000000000003 RDI: 000000000000001d RBP: 000000000073bf00 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f0e97bf66d4 R13: 00000000004c73ad R14: 00000000004dd088 R15: 00000000ffffffff Showing all locks held in the system: 3 locks held by kworker/u4:3/79: 1 lock held by khungtaskd/1032: #0: 0000000095e4ee77 (rcu_read_lock){....}, at: debug_show_all_locks+0x5f/0x27e kernel/locking/lockdep.c:4435 1 lock held by rsyslogd/7454: #0: 00000000c9c8c0fb (&f->f_pos_lock){+.+.}, at: __fdget_pos+0xee/0x110 fs/file.c:767 2 locks held by getty/7576: #0: 000000006a5125a2 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:363 #1: 0000000049a295d3 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b30 drivers/tty/n_tty.c:2154 2 locks held by getty/7577: #0: 000000002440d7a6 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:363 #1: 0000000006853e35 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b30 drivers/tty/n_tty.c:2154 2 locks held by getty/7578: #0: 00000000c59b0012 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:363 #1: 00000000ffefd129 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b30 drivers/tty/n_tty.c:2154 2 locks held by getty/7579: #0: 0000000006bf7912 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:363 #1: 0000000085699a5a (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b30 drivers/tty/n_tty.c:2154 2 locks held by getty/7580: #0: 00000000e9dfba5b (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:363 #1: 000000006acf4aaa (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b30 drivers/tty/n_tty.c:2154 2 locks held by getty/7581: #0: 0000000014d00402 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:363 #1: 00000000cf246086 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b30 drivers/tty/n_tty.c:2154 2 locks held by getty/7582: #0: 000000004946b105 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:363 #1: 00000000a70aebfb (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b30 drivers/tty/n_tty.c:2154 3 locks held by kworker/0:1/14967: #0: 00000000dfc09a97 ((wq_completion)"events"){+.+.}, at: __write_once_size include/linux/compiler.h:220 [inline] #0: 00000000dfc09a97 ((wq_completion)"events"){+.+.}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: 00000000dfc09a97 ((wq_completion)"events"){+.+.}, at: atomic64_set include/asm-generic/atomic-instrumented.h:40 [inline] #0: 00000000dfc09a97 ((wq_completion)"events"){+.+.}, at: atomic_long_set include/asm-generic/atomic-long.h:59 [inline] #0: 00000000dfc09a97 ((wq_completion)"events"){+.+.}, at: set_work_data kernel/workqueue.c:617 [inline] #0: 00000000dfc09a97 ((wq_completion)"events"){+.+.}, at: set_work_pool_and_clear_pending kernel/workqueue.c:644 [inline] #0: 00000000dfc09a97 ((wq_completion)"events"){+.+.}, at: process_one_work+0x87e/0x1760 kernel/workqueue.c:2124 #1: 000000000ca1db87 ((work_completion)(&smc->tcp_listen_work)){+.+.}, at: process_one_work+0x8b4/0x1760 kernel/workqueue.c:2128 #2: 00000000a4460e6a (&smc->clcsock_release_lock){+.+.}, at: smc_clcsock_accept net/smc/af_smc.c:843 [inline] #2: 00000000a4460e6a (&smc->clcsock_release_lock){+.+.}, at: smc_tcp_listen_work+0x1ac/0xf60 net/smc/af_smc.c:1314 3 locks held by kworker/1:2/25855: #0: 00000000dfc09a97 ((wq_completion)"events"){+.+.}, at: __write_once_size include/linux/compiler.h:220 [inline] #0: 00000000dfc09a97 ((wq_completion)"events"){+.+.}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: 00000000dfc09a97 ((wq_completion)"events"){+.+.}, at: atomic64_set include/asm-generic/atomic-instrumented.h:40 [inline] #0: 00000000dfc09a97 ((wq_completion)"events"){+.+.}, at: atomic_long_set include/asm-generic/atomic-long.h:59 [inline] #0: 00000000dfc09a97 ((wq_completion)"events"){+.+.}, at: set_work_data kernel/workqueue.c:617 [inline] #0: 00000000dfc09a97 ((wq_completion)"events"){+.+.}, at: set_work_pool_and_clear_pending kernel/workqueue.c:644 [inline] #0: 00000000dfc09a97 ((wq_completion)"events"){+.+.}, at: process_one_work+0x87e/0x1760 kernel/workqueue.c:2124 #1: 00000000bd31ef84 ((work_completion)(&smc->tcp_listen_work)){+.+.}, at: process_one_work+0x8b4/0x1760 kernel/workqueue.c:2128 #2: 0000000050c24478 (&smc->clcsock_release_lock){+.+.}, at: smc_clcsock_accept net/smc/af_smc.c:843 [inline] #2: 0000000050c24478 (&smc->clcsock_release_lock){+.+.}, at: smc_tcp_listen_work+0x1ac/0xf60 net/smc/af_smc.c:1314 1 lock held by syz-executor.0/12553: #0: 000000005dc31ed2 (pernet_ops_rwsem){++++}, at: register_netdevice_notifier+0x7e/0x630 net/core/dev.c:1642 ============================================= NMI backtrace for cpu 1 net_ratelimit: 26 callbacks suppressed protocol 88fb is buggy, dev hsr_slave_0 protocol 88fb is buggy, dev hsr_slave_1 CPU: 1 PID: 1032 Comm: khungtaskd Not tainted 4.19.37 #5 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+0x172/0x1f0 lib/dump_stack.c:113 nmi_cpu_backtrace.cold+0x63/0xa4 lib/nmi_backtrace.c:101 nmi_trigger_cpumask_backtrace+0x1b0/0x1f8 lib/nmi_backtrace.c:62 arch_trigger_cpumask_backtrace+0x14/0x20 arch/x86/kernel/apic/hw_nmi.c:38 trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:203 [inline] watchdog+0x9df/0xee0 kernel/hung_task.c:287 kthread+0x357/0x430 kernel/kthread.c:246 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:413 protocol 88fb is buggy, dev hsr_slave_0 Sending NMI from CPU 1 to CPUs 0: protocol 88fb is buggy, dev hsr_slave_1 INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 1.079 msecs NMI backtrace for cpu 0 CPU: 0 PID: 79 Comm: kworker/u4:3 Not tainted 4.19.37 #5 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: netns cleanup_net RIP: 0010:__hrtimer_run_queues+0xaf8/0xde0 kernel/time/hrtimer.c:1463 Code: ff ff ff 49 89 ce 0f 85 44 f6 ff ff e8 41 cb 0e 00 48 8b 8d 10 ff ff ff 48 b8 00 00 00 00 00 fc ff df 48 c7 04 01 00 00 00 00 <48> 8b 45 d0 65 48 33 04 25 28 00 00 00 0f 85 c5 02 00 00 48 81 c4 RSP: 0018:ffff8880ae8074e8 EFLAGS: 00000006 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 1ffff11015d00eaa RDX: 0000000000010100 RSI: ffffffff815c7c3f RDI: 0000000000000005 RBP: ffff8880ae8075d8 R08: ffff8880a9a545c0 R09: ffffed1015d04733 R10: ffffed1015d04732 R11: ffff8880ae823993 R12: ffff8880ae825c00 R13: 000001e07bed8bf2 R14: ffff8880ae826460 R15: dffffc0000000000 FS: 0000000000000000(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffffffff600400 CR3: 0000000091d06000 CR4: 00000000001426f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: hrtimer_interrupt+0x314/0x770 kernel/time/hrtimer.c:1518 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1029 [inline] smp_apic_timer_interrupt+0x120/0x570 arch/x86/kernel/apic/apic.c:1054 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:867 RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:788 [inline] RIP: 0010:console_trylock_spinning kernel/printk/printk.c:1689 [inline] RIP: 0010:vprintk_emit+0x5b8/0x690 kernel/printk/printk.c:1926 Code: 48 b8 00 00 00 00 00 fc ff df 41 80 7c 05 00 00 0f 85 a2 00 00 00 48 83 3d 3c 75 1c 07 00 74 29 e8 6d 89 15 00 48 89 df 57 9d <0f> 1f 44 00 00 e9 79 fe ff ff e8 59 89 15 00 0f 0b e8 52 89 15 00 RSP: 0018:ffff8880ae807780 EFLAGS: 00000206 ORIG_RAX: ffffffffffffff13 RAX: ffff8880a9a545c0 RBX: 0000000000000206 RCX: 1ffff1101534a9db RDX: 0000000000000100 RSI: ffffffff8155be13 RDI: 0000000000000206 RBP: ffff8880ae8077c8 R08: ffff8880a9a545c0 R09: ffff8880a9a54ed8 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000027 R13: 1ffffffff10e4669 R14: 0000000000000200 R15: ffff8880a80fa480 vprintk_default+0x28/0x30 kernel/printk/printk.c:1968 vprintk_func+0x7e/0x189 kernel/printk/printk_safe.c:398 printk+0xba/0xed kernel/printk/printk.c:2001 dev_queue_xmit_nit.cold+0x3f/0x4b net/core/dev.c:2035 xmit_one net/core/dev.c:3253 [inline] dev_hard_start_xmit+0xa7/0x980 net/core/dev.c:3273 __dev_queue_xmit+0x2718/0x3020 net/core/dev.c:3843 dev_queue_xmit+0x18/0x20 net/core/dev.c:3876 hsr_xmit net/hsr/hsr_forward.c:237 [inline] hsr_forward_do net/hsr/hsr_forward.c:295 [inline] hsr_forward_skb+0xd2e/0x1c10 net/hsr/hsr_forward.c:373 send_hsr_supervision_frame+0x8cb/0xf30 net/hsr/hsr_device.c:319 hsr_announce+0x12f/0x3b0 net/hsr/hsr_device.c:348 call_timer_fn+0x190/0x720 kernel/time/timer.c:1326 expire_timers kernel/time/timer.c:1363 [inline] __run_timers kernel/time/timer.c:1682 [inline] __run_timers kernel/time/timer.c:1650 [inline] run_timer_softirq+0x652/0x1700 kernel/time/timer.c:1695 __do_softirq+0x266/0x92f kernel/softirq.c:292 invoke_softirq kernel/softirq.c:372 [inline] irq_exit+0x180/0x1d0 kernel/softirq.c:412 exiting_irq arch/x86/include/asm/apic.h:536 [inline] smp_apic_timer_interrupt+0x14a/0x570 arch/x86/kernel/apic/apic.c:1056 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:867 RIP: 0010:should_resched arch/x86/include/asm/preempt.h:99 [inline] RIP: 0010:__local_bh_enable_ip+0x18e/0x270 kernel/softirq.c:196 Code: 00 00 00 00 fc ff df 48 c1 e8 03 80 3c 10 00 0f 85 df 00 00 00 48 83 3d b7 84 31 07 00 0f 84 8f 00 00 00 fb 66 0f 1f 44 00 00 <65> 8b 05 1b 3f c1 7e 85 c0 74 7f 5b 41 5c 41 5d 5d c3 80 3d 0d 47 RSP: 0018:ffff8880a9a5fb08 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff13 RAX: 1ffffffff10e466b RBX: 0000000000000200 RCX: 1ffff1101534a9d6 RDX: dffffc0000000000 RSI: ffff8880a9a54e90 RDI: ffff8880a9a54e3c RBP: ffff8880a9a5fb20 R08: ffff8880a9a545c0 R09: ffff8880a9a54eb0 R10: 0000000000000000 R11: 0000000000000000 R12: ffffffff85944701 R13: ffff8880a9a545c0 R14: 0000000000000001 R15: dffffc0000000000 local_bh_enable include/linux/bottom_half.h:32 [inline] get_next_corpse net/netfilter/nf_conntrack_core.c:1893 [inline] nf_ct_iterate_cleanup+0x217/0x4e0 net/netfilter/nf_conntrack_core.c:1916 nf_conntrack_cleanup_net_list+0x7a/0x250 net/netfilter/nf_conntrack_core.c:2103 nf_conntrack_pernet_exit+0x11d/0x170 net/netfilter/nf_conntrack_standalone.c:663 ops_exit_list.isra.0+0x105/0x160 net/core/net_namespace.c:156 cleanup_net+0x3fb/0x960 net/core/net_namespace.c:552 process_one_work+0x98e/0x1760 kernel/workqueue.c:2153 worker_thread+0x98/0xe40 kernel/workqueue.c:2296 kthread+0x357/0x430 kernel/kthread.c:246 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:413