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-executor.3:8806 blocked for more than 140 seconds. Not tainted 4.19.56 #28 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.3 D28216 8806 7910 0x00000004 Call Trace: context_switch kernel/sched/core.c:2826 [inline] __schedule+0x80d/0x1c70 kernel/sched/core.c:3474 schedule+0x92/0x1c0 kernel/sched/core.c:3518 __rwsem_down_read_failed_common kernel/locking/rwsem-xadd.c:292 [inline] rwsem_down_read_failed+0x21b/0x3c0 kernel/locking/rwsem-xadd.c:309 call_rwsem_down_read_failed+0x18/0x30 arch/x86/lib/rwsem.S:94 __down_read arch/x86/include/asm/rwsem.h:83 [inline] down_read+0x49/0xb0 kernel/locking/rwsem.c:26 __do_page_fault+0xb1a/0xe90 arch/x86/mm/fault.c:1329 do_page_fault+0x71/0x57d arch/x86/mm/fault.c:1468 page_fault+0x1e/0x30 arch/x86/entry/entry_64.S:1181 RIP: 0033:0x4019f7 Code: 01 00 00 c1 01 00 00 c4 01 00 00 c8 01 00 00 ca 01 00 00 cb 01 00 00 cc 01 00 00 ce 01 00 00 cf 01 00 00 d2 01 00 00 d5 01 00 <00> d8 01 00 00 db 01 00 00 e1 01 00 00 e6 01 00 00 00 00 00 00 00 RSP: 002b:00007ffcc4c83280 EFLAGS: 00010287 RAX: 0000001b32126000 RBX: 0000000000000007 RCX: 0000001b33120000 RDX: 0000001b32126004 RSI: ffffffff86ef5ebc RDI: 000000008100a443 RBP: 0000000000000051 R08: ffffffff8100a4bb R09: 00000000b0db9445 R10: 00007ffcc4c83430 R11: 0000000000000246 R12: 000000000075bfa8 R13: 0000000080000000 R14: 00007ff2001cd008 R15: 000000000000013f INFO: task syz-executor.3:8807 blocked for more than 140 seconds. Not tainted 4.19.56 #28 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.3 D28312 8807 7910 0x80000004 Call Trace: context_switch kernel/sched/core.c:2826 [inline] __schedule+0x80d/0x1c70 kernel/sched/core.c:3474 schedule+0x92/0x1c0 kernel/sched/core.c:3518 __rwsem_down_read_failed_common kernel/locking/rwsem-xadd.c:292 [inline] rwsem_down_read_failed+0x21b/0x3c0 kernel/locking/rwsem-xadd.c:309 call_rwsem_down_read_failed+0x18/0x30 arch/x86/lib/rwsem.S:94 __down_read arch/x86/include/asm/rwsem.h:83 [inline] down_read+0x49/0xb0 kernel/locking/rwsem.c:26 exit_mm kernel/exit.c:512 [inline] do_exit+0x45b/0x2fa0 kernel/exit.c:863 do_group_exit+0x135/0x370 kernel/exit.c:979 get_signal+0x3ec/0x1fc0 kernel/signal.c:2574 do_signal+0x95/0x1960 arch/x86/kernel/signal.c:821 exit_to_usermode_loop+0x244/0x2c0 arch/x86/entry/common.c:163 prepare_exit_to_usermode arch/x86/entry/common.c:198 [inline] syscall_return_slowpath arch/x86/entry/common.c:271 [inline] do_syscall_64+0x53d/0x620 arch/x86/entry/common.c:296 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x459519 Code: c6 40 48 83 c7 40 49 83 e8 40 49 83 f8 40 72 12 eb bc c5 f8 77 e9 54 fe ff ff c5 f8 77 e9 3a fe ff ff c5 f8 77 e9 fc fd ff ff cc cc cc cc cc cc 48 8b 7c 24 08 48 8b 54 24 10 48 8b 6c 24 18 RSP: 002b:00007ff1fe1cbcf8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca RAX: fffffffffffffe00 RBX: 000000000075bf28 RCX: 0000000000459519 RDX: 0000000000000000 RSI: 0000000000000080 RDI: 000000000075bf28 RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000075bf2c R13: 00007ffcc4c832df R14: 00007ff1fe1cc9c0 R15: 000000000075bf2c Showing all locks held in the system: 1 lock held by khungtaskd/1033: #0: 0000000058ab3560 (rcu_read_lock){....}, at: debug_show_all_locks+0x5f/0x27e kernel/locking/lockdep.c:4435 1 lock held by rsyslogd/7737: #0: 00000000f26c9997 (&f->f_pos_lock){+.+.}, at: __fdget_pos+0xee/0x110 fs/file.c:767 2 locks held by getty/7859: #0: 00000000ed3d86e4 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:363 #1: 00000000c5c38159 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b30 drivers/tty/n_tty.c:2154 2 locks held by getty/7860: #0: 00000000a28e9a42 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:363 #1: 000000004283ecba (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b30 drivers/tty/n_tty.c:2154 2 locks held by getty/7861: #0: 000000005e4e00f7 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:363 #1: 00000000ee246e7d (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b30 drivers/tty/n_tty.c:2154 2 locks held by getty/7862: #0: 00000000422560e0 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:363 #1: 0000000037abbfb3 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b30 drivers/tty/n_tty.c:2154 2 locks held by getty/7863: #0: 00000000cce5364d (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:363 #1: 00000000980437c4 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b30 drivers/tty/n_tty.c:2154 2 locks held by getty/7864: #0: 000000007aabecb3 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:363 #1: 00000000f0e8b24b (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b30 drivers/tty/n_tty.c:2154 2 locks held by getty/7865: #0: 00000000ff2b45fa (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:363 #1: 000000006d3f3fb6 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b30 drivers/tty/n_tty.c:2154 1 lock held by syz-executor.3/8806: #0: 00000000d46d3026 (&mm->mmap_sem){++++}, at: __do_page_fault+0xb1a/0xe90 arch/x86/mm/fault.c:1329 1 lock held by syz-executor.3/8807: #0: 00000000d46d3026 (&mm->mmap_sem){++++}, at: exit_mm kernel/exit.c:512 [inline] #0: 00000000d46d3026 (&mm->mmap_sem){++++}, at: do_exit+0x45b/0x2fa0 kernel/exit.c:863 1 lock held by syz-executor.3/8810: ============================================= NMI backtrace for cpu 1 CPU: 1 PID: 1033 Comm: khungtaskd Not tainted 4.19.56 #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+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+0x354/0x420 kernel/kthread.c:246 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 8810 Comm: syz-executor.3 Not tainted 4.19.56 #28 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:lock_is_held_type+0x187/0x210 kernel/locking/lockdep.c:3943 Code: 7c 08 00 00 00 00 00 00 48 c1 e8 03 80 3c 10 00 75 63 48 83 3d e1 8d 20 07 00 74 30 48 89 df 57 9d 0f 1f 44 00 00 48 83 c4 08 <44> 89 e0 5b 41 5c 41 5d 5d c3 48 83 c4 08 41 bc 01 00 00 00 5b 44 RSP: 0018:ffff88804107f870 EFLAGS: 00000292 RAX: 1ffffffff10e46c9 RBX: 0000000000000286 RCX: ffff88805e10ae40 RDX: dffffc0000000000 RSI: ffffffff8879d760 RDI: 0000000000000286 RBP: ffff88804107f888 R08: ffffffff818154f5 R09: ffffed1014179ce7 R10: ffff88804107faa0 R11: ffff8880a0bce737 R12: 0000000000000000 R13: ffff88805e10a5c0 R14: 0000000000000000 R15: ffffffff818154f5 FS: 00007ff1fe1cc700(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffd38c90fc0 CR3: 00000000912c1000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: lock_is_held include/linux/lockdep.h:344 [inline] ___might_sleep+0x1c4/0x280 kernel/sched/core.c:6115 __might_sleep+0x95/0x190 kernel/sched/core.c:6103 __mutex_lock_common kernel/locking/mutex.c:908 [inline] __mutex_lock+0xc8/0x1300 kernel/locking/mutex.c:1072 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1087 perf_mmap+0x735/0x1730 kernel/events/core.c:5655 call_mmap include/linux/fs.h:1825 [inline] mmap_region+0xc2f/0x1760 mm/mmap.c:1763 do_mmap+0x8e2/0x1080 mm/mmap.c:1536 do_mmap_pgoff include/linux/mm.h:2319 [inline] vm_mmap_pgoff+0x1c5/0x230 mm/util.c:357 ksys_mmap_pgoff+0x4aa/0x630 mm/mmap.c:1586 __do_sys_mmap arch/x86/kernel/sys_x86_64.c:100 [inline] __se_sys_mmap arch/x86/kernel/sys_x86_64.c:91 [inline] __x64_sys_mmap+0xe9/0x1b0 arch/x86/kernel/sys_x86_64.c:91 do_syscall_64+0xfd/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x459519 Code: fd b7 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 cb b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007ff1fe1cbc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000009 RAX: ffffffffffffffda RBX: 0000000000000006 RCX: 0000000000459519 RDX: 0000000000000000 RSI: 0000000000003000 RDI: 0000000020ffd000 RBP: 000000000075bf20 R08: 0000000000000003 R09: 0000000000000000 R10: 0000000000001011 R11: 0000000000000246 R12: 00007ff1fe1cc6d4 R13: 00000000004c5878 R14: 00000000004d9f50 R15: 00000000ffffffff