team0 (unregistering): Port device team_slave_1 removed team0 (unregistering): Port device team_slave_0 removed bond0 (unregistering): Releasing backup interface bond_slave_1 bond0 (unregistering): Releasing backup interface bond_slave_0 bond0 (unregistering): Released all slaves INFO: task syz-executor5:10945 blocked for more than 140 seconds. Not tainted 4.18.0-next-20180815+ #40 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor5 D24616 10945 4530 0x00000004 Call Trace: context_switch kernel/sched/core.c:2825 [inline] __schedule+0x87c/0x1df0 kernel/sched/core.c:3473 schedule+0xfb/0x450 kernel/sched/core.c:3517 __rwsem_down_write_failed_common+0x98b/0x1650 kernel/locking/rwsem-xadd.c:566 rwsem_down_write_failed+0xe/0x10 kernel/locking/rwsem-xadd.c:595 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+0xaa/0x130 kernel/locking/rwsem.c:72 inode_lock include/linux/fs.h:765 [inline] chmod_common+0x1b1/0x590 fs/open.c:535 do_fchmodat+0xc3/0x160 fs/open.c:579 __do_sys_chmod fs/open.c:597 [inline] __se_sys_chmod fs/open.c:595 [inline] __x64_sys_chmod+0x5c/0x80 fs/open.c:595 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x457089 Code: 08 e8 3b a9 fb ff 48 8b 44 24 20 48 8b 4c 24 18 48 8b 54 24 38 48 8b 7c 24 48 eb 8d 48 8b 6c 24 50 48 83 c4 58 c3 48 89 04 24 <48> 89 5c 24 08 e8 0d a9 fb ff 48 8b 44 24 40 48 8b 4c 24 48 48 8b RSP: 002b:00007f70a46f1c78 EFLAGS: 00000246 ORIG_RAX: 000000000000005a RAX: ffffffffffffffda RBX: 00007f70a46f26d4 RCX: 0000000000457089 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00000000200006c0 RBP: 0000000000930280 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff R13: 00000000004cb388 R14: 00000000004c282f R15: 0000000000000003 INFO: task syz-executor5:10999 blocked for more than 140 seconds. Not tainted 4.18.0-next-20180815+ #40 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor5 D24024 10999 4530 0x00000004 Call Trace: context_switch kernel/sched/core.c:2825 [inline] __schedule+0x87c/0x1df0 kernel/sched/core.c:3473 schedule+0xfb/0x450 kernel/sched/core.c:3517 __rwsem_down_write_failed_common+0x98b/0x1650 kernel/locking/rwsem-xadd.c:566 rwsem_down_write_failed+0xe/0x10 kernel/locking/rwsem-xadd.c:595 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+0xaa/0x130 kernel/locking/rwsem.c:72 inode_lock include/linux/fs.h:765 [inline] lock_mount+0x8c/0x2e0 fs/namespace.c:1991 do_add_mount+0x27/0x370 fs/namespace.c:2520 do_new_mount_fc fs/namespace.c:2579 [inline] do_new_mount fs/namespace.c:2631 [inline] do_mount+0x19bf/0x1e30 fs/namespace.c:2951 ksys_mount+0x12d/0x140 fs/namespace.c:3167 __do_sys_mount fs/namespace.c:3181 [inline] __se_sys_mount fs/namespace.c:3178 [inline] __x64_sys_mount+0xbe/0x150 fs/namespace.c:3178 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x457089 Code: 08 e8 3b a9 fb ff 48 8b 44 24 20 48 8b 4c 24 18 48 8b 54 24 38 48 8b 7c 24 48 eb 8d 48 8b 6c 24 50 48 83 c4 58 c3 48 89 04 24 <48> 89 5c 24 08 e8 0d a9 fb ff 48 8b 44 24 40 48 8b 4c 24 48 48 8b RSP: 002b:00007f70a46d0c78 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007f70a46d16d4 RCX: 0000000000457089 RDX: 0000000020000900 RSI: 0000000020000000 RDI: 0000000000000000 RBP: 0000000000930320 R08: 0000000020000380 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff R13: 00000000004d2768 R14: 00000000004c7be5 R15: 0000000000000004 Showing all locks held in the system: 1 lock held by khungtaskd/775: #0: 00000000f6cca41e (rcu_read_lock){....}, at: debug_show_all_locks+0xd0/0x428 kernel/locking/lockdep.c:4436 2 locks held by rs:main Q:Reg/4386: #0: 000000002fff90ae (&f->f_pos_lock){+.+.}, at: __fdget_pos+0x1bb/0x200 fs/file.c:766 #1: 00000000beda5adc (sb_writers#6){.+.+}, at: file_start_write include/linux/fs.h:2802 [inline] #1: 00000000beda5adc (sb_writers#6){.+.+}, at: vfs_write+0x42a/0x560 fs/read_write.c:548 1 lock held by rsyslogd/4388: #0: 000000009b2d7af0 (&f->f_pos_lock){+.+.}, at: __fdget_pos+0x1bb/0x200 fs/file.c:766 2 locks held by getty/4478: #0: 00000000413aaed5 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x37/0x40 drivers/tty/tty_ldsem.c:353 #1: 00000000d61979f9 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1ce0 drivers/tty/n_tty.c:2140 2 locks held by getty/4479: #0: 00000000b20a348a (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x37/0x40 drivers/tty/tty_ldsem.c:353 #1: 00000000e4267e18 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1ce0 drivers/tty/n_tty.c:2140 2 locks held by getty/4480: #0: 000000003f55df76 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x37/0x40 drivers/tty/tty_ldsem.c:353 #1: 00000000f94dd886 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1ce0 drivers/tty/n_tty.c:2140 2 locks held by getty/4481: #0: 000000008ebc9590 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x37/0x40 drivers/tty/tty_ldsem.c:353 #1: 00000000e9be00e8 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1ce0 drivers/tty/n_tty.c:2140 2 locks held by getty/4482: #0: 000000008a4cd94d (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x37/0x40 drivers/tty/tty_ldsem.c:353 #1: 0000000090f07080 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1ce0 drivers/tty/n_tty.c:2140 2 locks held by getty/4483: #0: 00000000bfa9d951 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x37/0x40 drivers/tty/tty_ldsem.c:353 #1: 0000000091144e9f (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1ce0 drivers/tty/n_tty.c:2140 2 locks held by getty/4484: #0: 000000008c63ea5a (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x37/0x40 drivers/tty/tty_ldsem.c:353 #1: 00000000d4bf5a41 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1ce0 drivers/tty/n_tty.c:2140 2 locks held by syz-executor5/10924: #0: 000000009e6115ec (sb_writers#13){.+.+}, at: sb_start_write include/linux/fs.h:1601 [inline] #0: 000000009e6115ec (sb_writers#13){.+.+}, at: mnt_want_write+0x3f/0xc0 fs/namespace.c:360 #1: 0000000013a4c71a (&sb->s_type->i_mutex_key#17){++++}, at: inode_lock include/linux/fs.h:765 [inline] #1: 0000000013a4c71a (&sb->s_type->i_mutex_key#17){++++}, at: chmod_common+0x1b1/0x590 fs/open.c:535 2 locks held by syz-executor5/10945: #0: 000000009e6115ec (sb_writers#13){.+.+}, at: sb_start_write include/linux/fs.h:1601 [inline] #0: 000000009e6115ec (sb_writers#13){.+.+}, at: mnt_want_write+0x3f/0xc0 fs/namespace.c:360 #1: 0000000013a4c71a (&sb->s_type->i_mutex_key#17){++++}, at: inode_lock include/linux/fs.h:765 [inline] #1: 0000000013a4c71a (&sb->s_type->i_mutex_key#17){++++}, at: chmod_common+0x1b1/0x590 fs/open.c:535 1 lock held by syz-executor5/10999: #0: 0000000013a4c71a (&sb->s_type->i_mutex_key#17){++++}, at: inode_lock include/linux/fs.h:765 [inline] #0: 0000000013a4c71a (&sb->s_type->i_mutex_key#17){++++}, at: lock_mount+0x8c/0x2e0 fs/namespace.c:1991 ============================================= NMI backtrace for cpu 0 CPU: 0 PID: 775 Comm: khungtaskd Not tainted 4.18.0-next-20180815+ #40 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+0x1c9/0x2b4 lib/dump_stack.c:113 nmi_cpu_backtrace.cold.3+0x48/0x88 lib/nmi_backtrace.c:101 nmi_trigger_cpumask_backtrace+0x151/0x192 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+0xb39/0x1040 kernel/hung_task.c:265 kthread+0x35a/0x420 kernel/kthread.c:246 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:415 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 0 Comm: swapper/1 Not tainted 4.18.0-next-20180815+ #40 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:kstat_incr_softirqs_this_cpu include/linux/kernel_stat.h:59 [inline] RIP: 0010:__do_softirq+0x3b2/0xa74 kernel/softirq.c:289 Code: fc 03 65 8b 05 3f ea 21 79 25 ff ff ff 7f 45 89 e7 4c 89 a5 50 fe ff ff 45 89 e6 89 85 64 fe ff ff 65 42 ff 04 bd 28 f5 01 00 <0f> 1f 44 00 00 65 8b 05 72 7d 21 79 48 c7 c6 60 b0 8b 88 89 c0 48 RSP: 0018:ffff8801db107c98 EFLAGS: 00000202 RAX: 0000000000000101 RBX: ffffffff87e09108 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff87e09100 RDI: ffff8801d9f1abbc RBP: ffff8801db107e70 R08: ffff8801d9f1a380 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000001 R13: dffffc0000000000 R14: 0000000000000001 R15: 0000000000000001 FS: 0000000000000000(0000) GS:ffff8801db100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000010f5000 CR3: 00000001b07e3000 CR4: 00000000001406e0 Call Trace: invoke_softirq kernel/softirq.c:372 [inline] irq_exit+0x1d6/0x210 kernel/softirq.c:412 exiting_irq arch/x86/include/asm/apic.h:536 [inline] smp_apic_timer_interrupt+0x18e/0x6a0 arch/x86/kernel/apic/apic.c:1056 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:867 RIP: 0010:native_safe_halt+0x6/0x10 arch/x86/include/asm/irqflags.h:56 Code: c7 48 89 45 d8 e8 5a 41 05 fb 48 8b 45 d8 e9 d2 fe ff ff 48 89 df e8 49 41 05 fb eb 8a 90 90 90 90 90 90 90 55 48 89 e5 fb f4 <5d> c3 0f 1f 84 00 00 00 00 00 55 48 89 e5 f4 5d c3 90 90 90 90 90 RSP: 0018:ffff8801d9f27c30 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff13 RAX: dffffc0000000000 RBX: 1ffff1003b3e4f8a RCX: 0000000000000000 RDX: 1ffffffff0fe3780 RSI: 0000000000000001 RDI: ffffffff87f1bc00 RBP: ffff8801d9f27c30 R08: ffff8801d9f1a380 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000001 R13: ffff8801d9f27cf0 R14: 0000000000000001 R15: 0000000000000000 arch_safe_halt arch/x86/include/asm/paravirt.h:94 [inline] default_idle+0xc2/0x410 arch/x86/kernel/process.c:498 arch_cpu_idle+0x10/0x20 arch/x86/kernel/process.c:489 default_idle_call+0x6d/0x90 kernel/sched/idle.c:93 cpuidle_idle_call kernel/sched/idle.c:153 [inline] do_idle+0x3aa/0x570 kernel/sched/idle.c:262 cpu_startup_entry+0x10c/0x120 kernel/sched/idle.c:368 start_secondary+0x433/0x5d0 arch/x86/kernel/smpboot.c:271 secondary_startup_64+0xa4/0xb0 arch/x86/kernel/head_64.S:242