INFO: task syz-executor5:11320 blocked for more than 140 seconds. Not tainted 4.19.0-rc5+ #28 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor5 D25528 11320 10936 0x00000000 Call Trace: context_switch kernel/sched/core.c:2825 [inline] __schedule+0x86c/0x1ed0 kernel/sched/core.c:3473 EXT4-fs warning (device sda1): ext4_group_add:1637: No reserved GDT blocks, can't resize schedule+0xfe/0x460 kernel/sched/core.c:3517 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3575 __mutex_lock_common kernel/locking/mutex.c:1002 [inline] __mutex_lock+0xbe7/0x1700 kernel/locking/mutex.c:1072 EXT4-fs warning (device sda1): ext4_group_add:1637: No reserved GDT blocks, can't resize mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1087 mon_bin_fetch+0x37/0x340 drivers/usb/mon/mon_bin.c:909 mon_bin_ioctl+0x2ae/0xe30 drivers/usb/mon/mon_bin.c:1091 vfs_ioctl fs/ioctl.c:46 [inline] file_ioctl fs/ioctl.c:501 [inline] do_vfs_ioctl+0x1de/0x1720 fs/ioctl.c:685 ksys_ioctl+0xa9/0xd0 fs/ioctl.c:702 __do_sys_ioctl fs/ioctl.c:709 [inline] __se_sys_ioctl fs/ioctl.c:707 [inline] __x64_sys_ioctl+0x73/0xb0 fs/ioctl.c:707 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x457679 Code: 1d b4 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 eb b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f7965ed4c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f7965ed56d4 RCX: 0000000000457679 RDX: 0000000020000000 RSI: 00000000c0109207 RDI: 0000000000000004 RBP: 000000000072c040 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff R13: 00000000004d04c0 R14: 00000000004c033d R15: 0000000000000002 Showing all locks held in the system: 2 locks held by kworker/0:1/14: #0: 000000005a5a7bc6 ((wq_completion)"events"){+.+.}, at: __write_once_size include/linux/compiler.h:215 [inline] #0: 000000005a5a7bc6 ((wq_completion)"events"){+.+.}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: 000000005a5a7bc6 ((wq_completion)"events"){+.+.}, at: atomic64_set include/asm-generic/atomic-instrumented.h:40 [inline] #0: 000000005a5a7bc6 ((wq_completion)"events"){+.+.}, at: atomic_long_set include/asm-generic/atomic-long.h:59 [inline] #0: 000000005a5a7bc6 ((wq_completion)"events"){+.+.}, at: set_work_data kernel/workqueue.c:617 [inline] #0: 000000005a5a7bc6 ((wq_completion)"events"){+.+.}, at: set_work_pool_and_clear_pending kernel/workqueue.c:644 [inline] #0: 000000005a5a7bc6 ((wq_completion)"events"){+.+.}, at: process_one_work+0xb43/0x1b90 kernel/workqueue.c:2124 #1: 0000000016514258 ((work_completion)(&ns->proc_work)){+.+.}, at: process_one_work+0xb9a/0x1b90 kernel/workqueue.c:2128 1 lock held by khungtaskd/985: #0: 00000000c2928054 (rcu_read_lock){....}, at: debug_show_all_locks+0xd0/0x424 kernel/locking/lockdep.c:4435 2 locks held by kworker/0:2/2909: #0: 000000005a5a7bc6 ((wq_completion)"events"){+.+.}, at: __write_once_size include/linux/compiler.h:215 [inline] #0: 000000005a5a7bc6 ((wq_completion)"events"){+.+.}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: 000000005a5a7bc6 ((wq_completion)"events"){+.+.}, at: atomic64_set include/asm-generic/atomic-instrumented.h:40 [inline] #0: 000000005a5a7bc6 ((wq_completion)"events"){+.+.}, at: atomic_long_set include/asm-generic/atomic-long.h:59 [inline] #0: 000000005a5a7bc6 ((wq_completion)"events"){+.+.}, at: set_work_data kernel/workqueue.c:617 [inline] #0: 000000005a5a7bc6 ((wq_completion)"events"){+.+.}, at: set_work_pool_and_clear_pending kernel/workqueue.c:644 [inline] #0: 000000005a5a7bc6 ((wq_completion)"events"){+.+.}, at: process_one_work+0xb43/0x1b90 kernel/workqueue.c:2124 #1: 0000000023743367 ((work_completion)(&ns->proc_work)){+.+.}, at: process_one_work+0xb9a/0x1b90 kernel/workqueue.c:2128 1 lock held by rsyslogd/5217: #0: 000000000510bf71 (&f->f_pos_lock){+.+.}, at: __fdget_pos+0x1bb/0x200 fs/file.c:766 2 locks held by getty/5307: #0: 0000000078df7250 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:353 #1: 0000000072288043 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1ce0 drivers/tty/n_tty.c:2140 2 locks held by getty/5308: #0: 000000001440f0cf (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:353 #1: 00000000dd888bef (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1ce0 drivers/tty/n_tty.c:2140 2 locks held by getty/5309: #0: 0000000098141352 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:353 #1: 000000008af1a0b9 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1ce0 drivers/tty/n_tty.c:2140 2 locks held by getty/5310: #0: 0000000092cfb824 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:353 #1: 000000005f5f7190 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1ce0 drivers/tty/n_tty.c:2140 2 locks held by getty/5311: #0: 00000000dfd3e4d7 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:353 #1: 0000000009e0b5a3 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1ce0 drivers/tty/n_tty.c:2140 2 locks held by getty/5312: #0: 00000000b1cc34be (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:353 #1: 000000001bf64c72 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1ce0 drivers/tty/n_tty.c:2140 2 locks held by getty/5313: #0: 00000000af296d56 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:353 #1: 000000009c0f870e (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1ce0 drivers/tty/n_tty.c:2140 2 locks held by kworker/0:3/5588: #0: 000000005a5a7bc6 ((wq_completion)"events"){+.+.}, at: __write_once_size include/linux/compiler.h:215 [inline] #0: 000000005a5a7bc6 ((wq_completion)"events"){+.+.}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: 000000005a5a7bc6 ((wq_completion)"events"){+.+.}, at: atomic64_set include/asm-generic/atomic-instrumented.h:40 [inline] #0: 000000005a5a7bc6 ((wq_completion)"events"){+.+.}, at: atomic_long_set include/asm-generic/atomic-long.h:59 [inline] #0: 000000005a5a7bc6 ((wq_completion)"events"){+.+.}, at: set_work_data kernel/workqueue.c:617 [inline] #0: 000000005a5a7bc6 ((wq_completion)"events"){+.+.}, at: set_work_pool_and_clear_pending kernel/workqueue.c:644 [inline] #0: 000000005a5a7bc6 ((wq_completion)"events"){+.+.}, at: process_one_work+0xb43/0x1b90 kernel/workqueue.c:2124 #1: 00000000bc3ed213 ((work_completion)(&ns->proc_work)){+.+.}, at: process_one_work+0xb9a/0x1b90 kernel/workqueue.c:2128 2 locks held by kworker/1:4/10260: #0: 000000005a5a7bc6 ((wq_completion)"events"){+.+.}, at: __write_once_size include/linux/compiler.h:215 [inline] #0: 000000005a5a7bc6 ((wq_completion)"events"){+.+.}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: 000000005a5a7bc6 ((wq_completion)"events"){+.+.}, at: atomic64_set include/asm-generic/atomic-instrumented.h:40 [inline] #0: 000000005a5a7bc6 ((wq_completion)"events"){+.+.}, at: atomic_long_set include/asm-generic/atomic-long.h:59 [inline] #0: 000000005a5a7bc6 ((wq_completion)"events"){+.+.}, at: set_work_data kernel/workqueue.c:617 [inline] #0: 000000005a5a7bc6 ((wq_completion)"events"){+.+.}, at: set_work_pool_and_clear_pending kernel/workqueue.c:644 [inline] #0: 000000005a5a7bc6 ((wq_completion)"events"){+.+.}, at: process_one_work+0xb43/0x1b90 kernel/workqueue.c:2124 #1: 00000000d0f1dd38 ((work_completion)(&ns->proc_work)){+.+.}, at: process_one_work+0xb9a/0x1b90 kernel/workqueue.c:2128 2 locks held by kworker/0:4/10278: #0: 000000005a5a7bc6 ((wq_completion)"events"){+.+.}, at: __write_once_size include/linux/compiler.h:215 [inline] #0: 000000005a5a7bc6 ((wq_completion)"events"){+.+.}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: 000000005a5a7bc6 ((wq_completion)"events"){+.+.}, at: atomic64_set include/asm-generic/atomic-instrumented.h:40 [inline] #0: 000000005a5a7bc6 ((wq_completion)"events"){+.+.}, at: atomic_long_set include/asm-generic/atomic-long.h:59 [inline] #0: 000000005a5a7bc6 ((wq_completion)"events"){+.+.}, at: set_work_data kernel/workqueue.c:617 [inline] #0: 000000005a5a7bc6 ((wq_completion)"events"){+.+.}, at: set_work_pool_and_clear_pending kernel/workqueue.c:644 [inline] #0: 000000005a5a7bc6 ((wq_completion)"events"){+.+.}, at: process_one_work+0xb43/0x1b90 kernel/workqueue.c:2124 #1: 00000000e1c4b514 ((work_completion)(&ns->proc_work)){+.+.}, at: process_one_work+0xb9a/0x1b90 kernel/workqueue.c:2128 1 lock held by syz-executor1/19391: ============================================= NMI backtrace for cpu 1 CPU: 1 PID: 985 Comm: khungtaskd Not tainted 4.19.0-rc5+ #28 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+0x1c4/0x2b4 lib/dump_stack.c:113 nmi_cpu_backtrace.cold.3+0x63/0xa2 lib/nmi_backtrace.c:101 nmi_trigger_cpumask_backtrace+0x1b3/0x1ed 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:144 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:204 [inline] watchdog+0xb3e/0x1050 kernel/hung_task.c:265 kthread+0x35a/0x420 kernel/kthread.c:246 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:413 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 19396 Comm: syz-executor2 Not tainted 4.19.0-rc5+ #28 INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 2.785 msecs Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:preempt_count_add+0x0/0x160 kernel/sched/core.c:1616 Code: 48 89 85 60 ff ff ff 89 8d 68 ff ff ff e8 a8 aa 6c 00 48 8b 85 60 ff ff ff 8b 8d 68 ff ff ff e9 04 fd ff ff 66 0f 1f 44 00 00 <48> b8 00 00 00 00 00 fc ff df 55 48 89 e5 41 54 53 89 fb 48 c7 c7 RSP: 0018:ffff8801dac05728 EFLAGS: 00000082 RAX: 0000000000000000 RBX: ffff8801dac25b80 RCX: 0000000000000000 RDX: 1ffff1003141a529 RSI: 0000000000000000 RDI: 0000000000000001 RBP: ffff8801dac05738 R08: ffff88018a0d2100 R09: 1ffffffff12b45ed R10: ffffed003b584732 R11: ffff8801dac23993 R12: 0000000000000000 R13: 0000000000000001 R14: ffff8801dac25c00 R15: dffffc0000000000 FS: 00007f8c7e4a5700(0000) GS:ffff8801dac00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000000072c000 CR3: 00000001b7f72000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __run_hrtimer kernel/time/hrtimer.c:1400 [inline] __hrtimer_run_queues+0x488/0x10d0 kernel/time/hrtimer.c:1460 hrtimer_interrupt+0x313/0x780 kernel/time/hrtimer.c:1518 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1029 [inline] smp_apic_timer_interrupt+0x1a1/0x760 arch/x86/kernel/apic/apic.c:1054 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:864 RIP: 0010:arch_local_irq_enable arch/x86/include/asm/paravirt.h:798 [inline] RIP: 0010:__local_bh_enable_ip+0x193/0x260 kernel/softirq.c:194 Code: 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 c8 00 00 00 48 83 3d 1e 8d 07 08 00 74 5b fb 66 0f 1f 44 00 00 <65> 8b 05 06 40 b7 7e 85 c0 75 05 e8 f4 cf b5 ff 5b 41 5c 41 5d 5d RSP: 0018:ffff8801dac05ca8 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13 RAX: dffffc0000000000 RBX: 0000000000000200 RCX: 1ffff1003141a548 RDX: 1ffffffff12a475b RSI: ffff88018a0d2a48 RDI: ffffffff89523ad8 RBP: ffff8801dac05cc0 R08: ffff88018a0d2a40 R09: 0000000000000002 R10: 0000000000000000 R11: ffff88018a0d2100 R12: ffffffff86c15179 R13: ffff88018a0d2100 R14: ffff8801c7231c80 R15: ffff8801d555ec00 local_bh_enable include/linux/bottom_half.h:32 [inline] ip6_pol_route+0x3cf/0xd90 net/ipv6/route.c:1920 ip6_pol_route_output+0x54/0x70 net/ipv6/route.c:2091 fib6_rule_lookup+0x13a/0x860 net/ipv6/fib6_rules.c:118 ip6_route_output_flags+0x2c5/0x350 net/ipv6/route.c:2119 ip6_route_output include/net/ip6_route.h:88 [inline] ip6_dst_lookup_tail+0xe27/0x1d60 net/ipv6/ip6_output.c:949 ip6_dst_lookup_flow+0xc8/0x270 net/ipv6/ip6_output.c:1077 sctp_v6_get_dst+0x885/0x2440 net/sctp/ipv6.c:290 sctp_transport_route+0x132/0x360 net/sctp/transport.c:303 sctp_assoc_add_peer+0x60e/0x1100 net/sctp/associola.c:671 sctp_process_param net/sctp/sm_make_chunk.c:2540 [inline] sctp_process_init+0x1b6c/0x2b10 net/sctp/sm_make_chunk.c:2356 sctp_sf_do_5_1B_init+0x8e3/0xf70 net/sctp/sm_statefuns.c:416 sctp_do_sm+0x212/0x7450 net/sctp/sm_sideeffect.c:1188 sctp_endpoint_bh_rcv+0x465/0x960 net/sctp/endpointola.c:456 sctp_inq_push+0x280/0x370 net/sctp/inqueue.c:95 sctp_rcv+0x2ded/0x3e10 net/sctp/input.c:268 sctp6_rcv+0x15/0x30 net/sctp/ipv6.c:1061 ip6_input_finish+0x3fc/0x1aa0 net/ipv6/ip6_input.c:383 NF_HOOK include/linux/netfilter.h:287 [inline] ip6_input+0xe9/0x600 net/ipv6/ip6_input.c:426 dst_input include/net/dst.h:450 [inline] ip6_rcv_finish+0x17a/0x330 net/ipv6/ip6_input.c:76 NF_HOOK include/linux/netfilter.h:287 [inline] ipv6_rcv+0x11e/0x650 net/ipv6/ip6_input.c:271 __netif_receive_skb_one_core+0x14d/0x200 net/core/dev.c:4891 ? rcu_dynticks_curr_cpu_in_eqs Lost 208 message(s)!