XFS (loop4): Filesystem has duplicate UUID 984f0b50-42b6-4b06-bc86-cba3e6cc3f80 - can't mount XFS (loop3): Filesystem has duplicate UUID 984f0b50-42b6-4b06-bc86-cba3e6cc3f80 - can't mount XFS (loop3): Filesystem has duplicate UUID 984f0b50-42b6-4b06-bc86-cba3e6cc3f80 - can't mount INFO: task syz-executor5:5935 blocked for more than 122 seconds. Not tainted 5.3.0-rc4 #1 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor5 D26128 5935 4522 0x00004004 Call Trace: context_switch kernel/sched/core.c:3254 [inline] __schedule+0x733/0x14d0 kernel/sched/core.c:3880 schedule+0x8c/0x250 kernel/sched/core.c:3944 xlog_grant_head_wait+0x123/0x9d0 fs/xfs/xfs_log.c:252 xlog_grant_head_check+0x24d/0x3a0 fs/xfs/xfs_log.c:314 xfs_log_reserve+0x2f7/0xab0 fs/xfs/xfs_log.c:443 xfs_log_write_unmount_record+0x186/0x7b0 fs/xfs/xfs_log.c:813 xfs_log_unmount_write fs/xfs/xfs_log.c:912 [inline] xfs_log_quiesce+0x344/0x4a0 fs/xfs/xfs_log.c:979 xfs_log_unmount+0x1a/0xb0 fs/xfs/xfs_log.c:993 xfs_log_mount_cancel+0x3a/0x50 fs/xfs/xfs_log.c:777 xfs_mountfs+0xf66/0x18a0 fs/xfs/xfs_mount.c:996 xfs_fs_fill_super+0xaad/0x1450 fs/xfs/xfs_super.c:1729 mount_bdev+0x27b/0x340 fs/super.c:1283 xfs_fs_mount+0x10/0x20 fs/xfs/xfs_super.c:1803 legacy_get_tree+0x103/0x1f0 fs/fs_context.c:661 vfs_get_tree+0x8b/0x360 fs/super.c:1413 do_new_mount fs/namespace.c:2791 [inline] do_mount+0x584/0x1b40 fs/namespace.c:3111 ksys_mount+0xba/0xe0 fs/namespace.c:3320 __do_sys_mount fs/namespace.c:3334 [inline] __se_sys_mount fs/namespace.c:3331 [inline] __x64_sys_mount+0xb9/0x150 fs/namespace.c:3331 do_syscall_64+0xd6/0x550 arch/x86/entry/common.c:296 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x45858a Code: e8 2b 8f fa ff 48 8b 44 24 10 48 8b 4c 24 28 48 8d 51 20 48 89 14 24 48 89 44 24 08 e8 0f 8f fa ff 48 8b 44 24 10 48 8b 4c 24 <28> 48 83 c1 30 48 89 0c 24 48 89 44 24 08 e8 f3 8e fa ff 48 8b 44 RSP: 002b:00007f638c7dcba8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 0000000020000040 RCX: 000000000045858a RDX: 0000000020000040 RSI: 0000000020000100 RDI: 00007f638c7dcbf0 RBP: 0000000000000001 R08: 00000000200001c0 R09: 0000000020000040 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000003 R13: 0000000000000001 R14: 00000000006fed98 R15: 0000000000000000 Showing all locks held in the system: 1 lock held by khungtaskd/890: #0: 000000004861bb06 (rcu_read_lock){....}, at: debug_show_all_locks+0x5b/0x27e kernel/locking/lockdep.c:5256 1 lock held by rsyslogd/4074: 2 locks held by getty/4164: #0: 000000003c2dcae5 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:340 #1: 00000000b2f2ba5d (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x1ee/0x1970 drivers/tty/n_tty.c:2156 2 locks held by getty/4165: #0: 00000000f38457c0 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:340 #1: 00000000b081890f (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x1ee/0x1970 drivers/tty/n_tty.c:2156 2 locks held by getty/4166: #0: 00000000528c64d2 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:340 #1: 000000001accc746 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x1ee/0x1970 drivers/tty/n_tty.c:2156 2 locks held by getty/4167: #0: 000000004579e824 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:340 #1: 000000007e1ad42a (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x1ee/0x1970 drivers/tty/n_tty.c:2156 2 locks held by getty/4168: #0: 0000000079dd9d2e (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:340 #1: 00000000eab360f7 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x1ee/0x1970 drivers/tty/n_tty.c:2156 2 locks held by getty/4169: #0: 000000003ec7aea5 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:340 #1: 00000000721570c5 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x1ee/0x1970 drivers/tty/n_tty.c:2156 2 locks held by getty/4170: #0: 00000000f244af9b (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:340 #1: 00000000315a5148 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x1ee/0x1970 drivers/tty/n_tty.c:2156 1 lock held by syz-executor5/5935: #0: 0000000023ddc1a4 (&type->s_umount_key#46/1){+.+.}, at: alloc_super+0x134/0x820 fs/super.c:228 ============================================= NMI backtrace for cpu 1 CPU: 1 PID: 890 Comm: khungtaskd Not tainted 5.3.0-rc4 #1 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+0x115/0x167 lib/dump_stack.c:113 nmi_cpu_backtrace.cold.8+0x46/0x83 lib/nmi_backtrace.c:101 nmi_trigger_cpumask_backtrace+0x160/0x177 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:205 [inline] watchdog+0x5a5/0xb40 kernel/hung_task.c:289 kthread+0x334/0x3f0 kernel/kthread.c:255 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:352 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.3.0-rc4 #1 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:preempt_count arch/x86/include/asm/preempt.h:26 [inline] RIP: 0010:trace_hardirqs_off_caller+0x2b/0x180 kernel/trace/trace_preemptirq.c:69 Code: 48 89 e5 41 57 41 56 41 55 41 54 53 48 83 ec 08 65 8b 05 78 97 97 7e 85 c0 0f 85 bb 00 00 00 65 c7 05 65 97 97 7e 01 00 00 00 <65> 8b 05 76 97 96 7e 48 8b 5d 08 a9 00 00 10 00 0f 84 a3 00 00 00 RSP: 0018:ffff8881db009f58 EFLAGS: 00000046 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff86c0181a RDI: ffffffff86c0099d RBP: ffff8881db009f88 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff8881db000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffffffff600400 CR3: 00000001bd2d4000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: trace_hardirqs_off_thunk+0x1a/0x20 arch/x86/entry/thunk_64.S:42 interrupt_entry+0xbd/0xbe arch/x86/entry/entry_64.S:579 RIP: 0010:native_safe_halt+0x12/0x20 arch/x86/include/asm/irqflags.h:61 Code: 4b d9 fa e9 ef fe ff ff 48 89 df e8 78 4b d9 fa eb a4 90 90 90 90 90 90 55 48 89 e5 e9 07 00 00 00 0f 00 2d a0 d8 48 00 fb f4 <5d> c3 66 90 66 2e 0f 1f 84 00 00 00 00 00 55 48 89 e5 e9 07 00 00 RSP: 0018:ffffffff88007ce0 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff02 RAX: dffffc0000000000 RBX: ffffffff8807b0c0 RCX: 0000000000000000 RDX: 1ffffffff102518d RSI: 0000000000000006 RDI: ffffffff88128c68 RBP: ffffffff88007ce0 R08: 0000000000000006 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: ffffffff88bfa478 R15: 0000000000000000 arch_safe_halt arch/x86/include/asm/paravirt.h:156 [inline] default_idle+0x54/0x310 arch/x86/kernel/process.c:580 arch_cpu_idle+0x10/0x20 arch/x86/kernel/process.c:571 default_idle_call+0x87/0xa0 kernel/sched/idle.c:94 cpuidle_idle_call kernel/sched/idle.c:154 [inline] do_idle+0x460/0x720 kernel/sched/idle.c:263 cpu_startup_entry+0x18/0x20 kernel/sched/idle.c:354 rest_init+0x1ab/0x280 init/main.c:451 arch_call_rest_init+0x9/0xc start_kernel+0x71d/0x758 init/main.c:785 x86_64_start_reservations+0x29/0x2b arch/x86/kernel/head64.c:472 x86_64_start_kernel+0x76/0x79 arch/x86/kernel/head64.c:453 secondary_startup_64+0xa4/0xb0 arch/x86/kernel/head_64.S:241