INFO: task systemd-udevd:2971 blocked for more than 143 seconds. Not tainted 5.16.0-rc1-next-20211118-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:systemd-udevd state:D stack:22872 pid: 2971 ppid: 1 flags:0x00000004 Call Trace: context_switch kernel/sched/core.c:4987 [inline] __schedule+0xa9a/0x4940 kernel/sched/core.c:6268 schedule+0xd2/0x260 kernel/sched/core.c:6341 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6400 __mutex_lock_common kernel/locking/mutex.c:680 [inline] __mutex_lock+0xa32/0x12f0 kernel/locking/mutex.c:740 blkdev_get_by_dev.part.0+0x9b/0xb50 block/bdev.c:819 blkdev_get_by_dev+0x6b/0x80 block/bdev.c:859 blkdev_open+0x154/0x2e0 block/fops.c:501 do_dentry_open+0x4c8/0x1250 fs/open.c:822 do_open fs/namei.c:3426 [inline] path_openat+0x1cad/0x2750 fs/namei.c:3559 do_filp_open+0x1aa/0x400 fs/namei.c:3586 do_sys_openat2+0x16d/0x4d0 fs/open.c:1212 do_sys_open fs/open.c:1228 [inline] __do_sys_open fs/open.c:1236 [inline] __se_sys_open fs/open.c:1232 [inline] __x64_sys_open+0x119/0x1c0 fs/open.c:1232 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x7f71bf2db840 RSP: 002b:00007ffc32351108 EFLAGS: 00000246 ORIG_RAX: 0000000000000002 RAX: ffffffffffffffda RBX: 00007ffc323511d0 RCX: 00007f71bf2db840 RDX: 0000559195235fe3 RSI: 00000000000a0800 RDI: 0000559196f57f00 RBP: 00007ffc32351700 R08: 0000559195235670 R09: 0000000000000010 R10: 0000000000000020 R11: 0000000000000246 R12: 00007ffc323512b0 R13: 00005591963d1010 R14: 0000559197c4a770 R15: 00007ffc32351180 INFO: task systemd-udevd:15545 blocked for more than 143 seconds. Not tainted 5.16.0-rc1-next-20211118-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:systemd-udevd state:D stack:25392 pid:15545 ppid: 2971 flags:0x00000000 Call Trace: context_switch kernel/sched/core.c:4987 [inline] __schedule+0xa9a/0x4940 kernel/sched/core.c:6268 schedule+0xd2/0x260 kernel/sched/core.c:6341 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6400 __mutex_lock_common kernel/locking/mutex.c:680 [inline] __mutex_lock+0xa32/0x12f0 kernel/locking/mutex.c:740 blkdev_get_by_dev.part.0+0x9b/0xb50 block/bdev.c:819 blkdev_get_by_dev+0x6b/0x80 block/bdev.c:859 blkdev_open+0x154/0x2e0 block/fops.c:501 do_dentry_open+0x4c8/0x1250 fs/open.c:822 do_open fs/namei.c:3426 [inline] path_openat+0x1cad/0x2750 fs/namei.c:3559 do_filp_open+0x1aa/0x400 fs/namei.c:3586 do_sys_openat2+0x16d/0x4d0 fs/open.c:1212 do_sys_open fs/open.c:1228 [inline] __do_sys_open fs/open.c:1236 [inline] __se_sys_open fs/open.c:1232 [inline] __x64_sys_open+0x119/0x1c0 fs/open.c:1232 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x7f71bf2db840 RSP: 002b:00007ffc32351038 EFLAGS: 00000246 ORIG_RAX: 0000000000000002 RAX: ffffffffffffffda RBX: 00005591963e53a0 RCX: 00007f71bf2db840 RDX: 0000559195235fe3 RSI: 00000000000a0800 RDI: 00005591963e3b60 RBP: 00007ffc323511b0 R08: 0000559195235670 R09: 0000000000000010 R10: 0000559195235d0c R11: 0000000000000246 R12: 00007ffc32351100 R13: 00005591963d27c0 R14: 0000000000000003 R15: 000000000000000e INFO: task syz-executor.0:12524 can't die for more than 143 seconds. task:syz-executor.0 state:D stack:26584 pid:12524 ppid: 11159 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:4987 [inline] __schedule+0xa9a/0x4940 kernel/sched/core.c:6268 schedule+0xd2/0x260 kernel/sched/core.c:6341 blk_mq_freeze_queue_wait+0x112/0x160 block/blk-mq.c:178 lo_release+0x160/0x1f0 drivers/block/loop.c:1768 blkdev_put_whole block/bdev.c:694 [inline] blkdev_put+0x2fb/0x9e0 block/bdev.c:956 btrfs_close_bdev fs/btrfs/volumes.c:1114 [inline] btrfs_close_bdev fs/btrfs/volumes.c:1104 [inline] btrfs_close_one_device fs/btrfs/volumes.c:1135 [inline] close_fs_devices+0x24f/0xa60 fs/btrfs/volumes.c:1178 btrfs_close_devices+0x8e/0x4b0 fs/btrfs/volumes.c:1193 open_ctree+0x48b7/0x495c fs/btrfs/disk-io.c:3700 btrfs_fill_super fs/btrfs/super.c:1359 [inline] btrfs_mount_root.cold+0x15/0x162 fs/btrfs/super.c:1726 legacy_get_tree+0x105/0x220 fs/fs_context.c:610 vfs_get_tree+0x89/0x2f0 fs/super.c:1500 fc_mount fs/namespace.c:994 [inline] vfs_kern_mount.part.0+0xd3/0x170 fs/namespace.c:1024 vfs_kern_mount+0x3c/0x60 fs/namespace.c:1011 btrfs_mount+0x234/0xa60 fs/btrfs/super.c:1786 legacy_get_tree+0x105/0x220 fs/fs_context.c:610 vfs_get_tree+0x89/0x2f0 fs/super.c:1500 do_new_mount fs/namespace.c:2988 [inline] path_mount+0x1320/0x1fa0 fs/namespace.c:3318 do_mount fs/namespace.c:3331 [inline] __do_sys_mount fs/namespace.c:3539 [inline] __se_sys_mount fs/namespace.c:3516 [inline] __x64_sys_mount+0x27f/0x300 fs/namespace.c:3516 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x7f269609d01a RSP: 002b:00007f2693610fa8 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00000000200009c0 RCX: 00007f269609d01a RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007f2693611000 RBP: 00007f2693611040 R08: 00007f2693611040 R09: 0000000020000000 R10: 0000000000000000 R11: 0000000000000206 R12: 0000000020000000 R13: 0000000020000100 R14: 00007f2693611000 R15: 00000000200005c0 INFO: task syz-executor.0:12524 blocked for more than 144 seconds. Not tainted 5.16.0-rc1-next-20211118-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.0 state:D stack:26584 pid:12524 ppid: 11159 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:4987 [inline] __schedule+0xa9a/0x4940 kernel/sched/core.c:6268 schedule+0xd2/0x260 kernel/sched/core.c:6341 blk_mq_freeze_queue_wait+0x112/0x160 block/blk-mq.c:178 lo_release+0x160/0x1f0 drivers/block/loop.c:1768 blkdev_put_whole block/bdev.c:694 [inline] blkdev_put+0x2fb/0x9e0 block/bdev.c:956 btrfs_close_bdev fs/btrfs/volumes.c:1114 [inline] btrfs_close_bdev fs/btrfs/volumes.c:1104 [inline] btrfs_close_one_device fs/btrfs/volumes.c:1135 [inline] close_fs_devices+0x24f/0xa60 fs/btrfs/volumes.c:1178 btrfs_close_devices+0x8e/0x4b0 fs/btrfs/volumes.c:1193 open_ctree+0x48b7/0x495c fs/btrfs/disk-io.c:3700 btrfs_fill_super fs/btrfs/super.c:1359 [inline] btrfs_mount_root.cold+0x15/0x162 fs/btrfs/super.c:1726 legacy_get_tree+0x105/0x220 fs/fs_context.c:610 vfs_get_tree+0x89/0x2f0 fs/super.c:1500 fc_mount fs/namespace.c:994 [inline] vfs_kern_mount.part.0+0xd3/0x170 fs/namespace.c:1024 vfs_kern_mount+0x3c/0x60 fs/namespace.c:1011 btrfs_mount+0x234/0xa60 fs/btrfs/super.c:1786 legacy_get_tree+0x105/0x220 fs/fs_context.c:610 vfs_get_tree+0x89/0x2f0 fs/super.c:1500 do_new_mount fs/namespace.c:2988 [inline] path_mount+0x1320/0x1fa0 fs/namespace.c:3318 do_mount fs/namespace.c:3331 [inline] __do_sys_mount fs/namespace.c:3539 [inline] __se_sys_mount fs/namespace.c:3516 [inline] __x64_sys_mount+0x27f/0x300 fs/namespace.c:3516 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x7f269609d01a RSP: 002b:00007f2693610fa8 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00000000200009c0 RCX: 00007f269609d01a RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007f2693611000 RBP: 00007f2693611040 R08: 00007f2693611040 R09: 0000000020000000 R10: 0000000000000000 R11: 0000000000000206 R12: 0000000020000000 R13: 0000000020000100 R14: 00007f2693611000 R15: 00000000200005c0 INFO: task syz-executor.4:12556 can't die for more than 144 seconds. task:syz-executor.4 state:D stack:26352 pid:12556 ppid: 6567 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:4987 [inline] __schedule+0xa9a/0x4940 kernel/sched/core.c:6268 schedule+0xd2/0x260 kernel/sched/core.c:6341 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6400 __mutex_lock_common kernel/locking/mutex.c:680 [inline] __mutex_lock+0xa32/0x12f0 kernel/locking/mutex.c:740 btrfs_mount_root+0x23b/0xc10 fs/btrfs/super.c:1681 legacy_get_tree+0x105/0x220 fs/fs_context.c:610 vfs_get_tree+0x89/0x2f0 fs/super.c:1500 fc_mount fs/namespace.c:994 [inline] vfs_kern_mount.part.0+0xd3/0x170 fs/namespace.c:1024 vfs_kern_mount+0x3c/0x60 fs/namespace.c:1011 btrfs_mount+0x234/0xa60 fs/btrfs/super.c:1786 legacy_get_tree+0x105/0x220 fs/fs_context.c:610 vfs_get_tree+0x89/0x2f0 fs/super.c:1500 do_new_mount fs/namespace.c:2988 [inline] path_mount+0x1320/0x1fa0 fs/namespace.c:3318 do_mount fs/namespace.c:3331 [inline] __do_sys_mount fs/namespace.c:3539 [inline] __se_sys_mount fs/namespace.c:3516 [inline] __x64_sys_mount+0x27f/0x300 fs/namespace.c:3516 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x7f32636f201a RSP: 002b:00007f3260c65fa8 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00000000200009c0 RCX: 00007f32636f201a RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007f3260c66000 RBP: 00007f3260c66040 R08: 00007f3260c66040 R09: 0000000020000000 R10: 0000000000000000 R11: 0000000000000206 R12: 0000000020000000 R13: 0000000020000100 R14: 00007f3260c66000 R15: 00000000200005c0 INFO: task syz-executor.4:12556 blocked for more than 145 seconds. Not tainted 5.16.0-rc1-next-20211118-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.4 state:D stack:26352 pid:12556 ppid: 6567 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:4987 [inline] __schedule+0xa9a/0x4940 kernel/sched/core.c:6268 schedule+0xd2/0x260 kernel/sched/core.c:6341 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6400 __mutex_lock_common kernel/locking/mutex.c:680 [inline] __mutex_lock+0xa32/0x12f0 kernel/locking/mutex.c:740 btrfs_mount_root+0x23b/0xc10 fs/btrfs/super.c:1681 legacy_get_tree+0x105/0x220 fs/fs_context.c:610 vfs_get_tree+0x89/0x2f0 fs/super.c:1500 fc_mount fs/namespace.c:994 [inline] vfs_kern_mount.part.0+0xd3/0x170 fs/namespace.c:1024 vfs_kern_mount+0x3c/0x60 fs/namespace.c:1011 btrfs_mount+0x234/0xa60 fs/btrfs/super.c:1786 legacy_get_tree+0x105/0x220 fs/fs_context.c:610 vfs_get_tree+0x89/0x2f0 fs/super.c:1500 do_new_mount fs/namespace.c:2988 [inline] path_mount+0x1320/0x1fa0 fs/namespace.c:3318 do_mount fs/namespace.c:3331 [inline] __do_sys_mount fs/namespace.c:3539 [inline] __se_sys_mount fs/namespace.c:3516 [inline] __x64_sys_mount+0x27f/0x300 fs/namespace.c:3516 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x7f32636f201a RSP: 002b:00007f3260c65fa8 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00000000200009c0 RCX: 00007f32636f201a RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007f3260c66000 RBP: 00007f3260c66040 R08: 00007f3260c66040 R09: 0000000020000000 R10: 0000000000000000 R11: 0000000000000206 R12: 0000000020000000 R13: 0000000020000100 R14: 00007f3260c66000 R15: 00000000200005c0 INFO: task syz-executor.2:12576 can't die for more than 145 seconds. task:syz-executor.2 state:D stack:26016 pid:12576 ppid: 15053 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:4987 [inline] __schedule+0xa9a/0x4940 kernel/sched/core.c:6268 schedule+0xd2/0x260 kernel/sched/core.c:6341 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6400 __mutex_lock_common kernel/locking/mutex.c:680 [inline] __mutex_lock+0xa32/0x12f0 kernel/locking/mutex.c:740 btrfs_mount_root+0x23b/0xc10 fs/btrfs/super.c:1681 legacy_get_tree+0x105/0x220 fs/fs_context.c:610 vfs_get_tree+0x89/0x2f0 fs/super.c:1500 fc_mount fs/namespace.c:994 [inline] vfs_kern_mount.part.0+0xd3/0x170 fs/namespace.c:1024 vfs_kern_mount+0x3c/0x60 fs/namespace.c:1011 btrfs_mount+0x234/0xa60 fs/btrfs/super.c:1786 legacy_get_tree+0x105/0x220 fs/fs_context.c:610 vfs_get_tree+0x89/0x2f0 fs/super.c:1500 do_new_mount fs/namespace.c:2988 [inline] path_mount+0x1320/0x1fa0 fs/namespace.c:3318 do_mount fs/namespace.c:3331 [inline] __do_sys_mount fs/namespace.c:3539 [inline] __se_sys_mount fs/namespace.c:3516 [inline] __x64_sys_mount+0x27f/0x300 fs/namespace.c:3516 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x7f3e197fe01a RSP: 002b:00007f3e16d71fa8 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00000000200009c0 RCX: 00007f3e197fe01a RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007f3e16d72000 RBP: 00007f3e16d72040 R08: 00007f3e16d72040 R09: 0000000020000000 R10: 0000000000000000 R11: 0000000000000206 R12: 0000000020000000 R13: 0000000020000100 R14: 00007f3e16d72000 R15: 00000000200005c0 INFO: task syz-executor.2:12576 blocked for more than 145 seconds. Not tainted 5.16.0-rc1-next-20211118-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.2 state:D stack:26016 pid:12576 ppid: 15053 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:4987 [inline] __schedule+0xa9a/0x4940 kernel/sched/core.c:6268 schedule+0xd2/0x260 kernel/sched/core.c:6341 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6400 __mutex_lock_common kernel/locking/mutex.c:680 [inline] __mutex_lock+0xa32/0x12f0 kernel/locking/mutex.c:740 btrfs_mount_root+0x23b/0xc10 fs/btrfs/super.c:1681 legacy_get_tree+0x105/0x220 fs/fs_context.c:610 vfs_get_tree+0x89/0x2f0 fs/super.c:1500 fc_mount fs/namespace.c:994 [inline] vfs_kern_mount.part.0+0xd3/0x170 fs/namespace.c:1024 vfs_kern_mount+0x3c/0x60 fs/namespace.c:1011 btrfs_mount+0x234/0xa60 fs/btrfs/super.c:1786 legacy_get_tree+0x105/0x220 fs/fs_context.c:610 vfs_get_tree+0x89/0x2f0 fs/super.c:1500 do_new_mount fs/namespace.c:2988 [inline] path_mount+0x1320/0x1fa0 fs/namespace.c:3318 do_mount fs/namespace.c:3331 [inline] __do_sys_mount fs/namespace.c:3539 [inline] __se_sys_mount fs/namespace.c:3516 [inline] __x64_sys_mount+0x27f/0x300 fs/namespace.c:3516 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x7f3e197fe01a RSP: 002b:00007f3e16d71fa8 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00000000200009c0 RCX: 00007f3e197fe01a RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007f3e16d72000 RBP: 00007f3e16d72040 R08: 00007f3e16d72040 R09: 0000000020000000 R10: 0000000000000000 R11: 0000000000000206 R12: 0000000020000000 R13: 0000000020000100 R14: 00007f3e16d72000 R15: 00000000200005c0 INFO: task syz-executor.3:12579 can't die for more than 146 seconds. task:syz-executor.3 state:D stack:25992 pid:12579 ppid: 10536 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:4987 [inline] __schedule+0xa9a/0x4940 kernel/sched/core.c:6268 schedule+0xd2/0x260 kernel/sched/core.c:6341 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6400 __mutex_lock_common kernel/locking/mutex.c:680 [inline] __mutex_lock+0xa32/0x12f0 kernel/locking/mutex.c:740 btrfs_mount_root+0x23b/0xc10 fs/btrfs/super.c:1681 legacy_get_tree+0x105/0x220 fs/fs_context.c:610 vfs_get_tree+0x89/0x2f0 fs/super.c:1500 fc_mount fs/namespace.c:994 [inline] vfs_kern_mount.part.0+0xd3/0x170 fs/namespace.c:1024 vfs_kern_mount+0x3c/0x60 fs/namespace.c:1011 btrfs_mount+0x234/0xa60 fs/btrfs/super.c:1786 legacy_get_tree+0x105/0x220 fs/fs_context.c:610 vfs_get_tree+0x89/0x2f0 fs/super.c:1500 do_new_mount fs/namespace.c:2988 [inline] path_mount+0x1320/0x1fa0 fs/namespace.c:3318 do_mount fs/namespace.c:3331 [inline] __do_sys_mount fs/namespace.c:3539 [inline] __se_sys_mount fs/namespace.c:3516 [inline] __x64_sys_mount+0x27f/0x300 fs/namespace.c:3516 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x7fc16bf1d01a RSP: 002b:00007fc169490fa8 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00000000200009c0 RCX: 00007fc16bf1d01a RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007fc169491000 RBP: 00007fc169491040 R08: 00007fc169491040 R09: 0000000020000000 R10: 0000000000000000 R11: 0000000000000206 R12: 0000000020000000 R13: 0000000020000100 R14: 00007fc169491000 R15: 00000000200005c0 INFO: task syz-executor.3:12579 blocked for more than 146 seconds. Not tainted 5.16.0-rc1-next-20211118-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.3 state:D stack:25992 pid:12579 ppid: 10536 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:4987 [inline] __schedule+0xa9a/0x4940 kernel/sched/core.c:6268 schedule+0xd2/0x260 kernel/sched/core.c:6341 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6400 __mutex_lock_common kernel/locking/mutex.c:680 [inline] __mutex_lock+0xa32/0x12f0 kernel/locking/mutex.c:740 btrfs_mount_root+0x23b/0xc10 fs/btrfs/super.c:1681 legacy_get_tree+0x105/0x220 fs/fs_context.c:610 vfs_get_tree+0x89/0x2f0 fs/super.c:1500 fc_mount fs/namespace.c:994 [inline] vfs_kern_mount.part.0+0xd3/0x170 fs/namespace.c:1024 vfs_kern_mount+0x3c/0x60 fs/namespace.c:1011 btrfs_mount+0x234/0xa60 fs/btrfs/super.c:1786 legacy_get_tree+0x105/0x220 fs/fs_context.c:610 vfs_get_tree+0x89/0x2f0 fs/super.c:1500 do_new_mount fs/namespace.c:2988 [inline] path_mount+0x1320/0x1fa0 fs/namespace.c:3318 do_mount fs/namespace.c:3331 [inline] __do_sys_mount fs/namespace.c:3539 [inline] __se_sys_mount fs/namespace.c:3516 [inline] __x64_sys_mount+0x27f/0x300 fs/namespace.c:3516 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x7fc16bf1d01a RSP: 002b:00007fc169490fa8 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00000000200009c0 RCX: 00007fc16bf1d01a RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007fc169491000 RBP: 00007fc169491040 R08: 00007fc169491040 R09: 0000000020000000 R10: 0000000000000000 R11: 0000000000000206 R12: 0000000020000000 R13: 0000000020000100 R14: 00007fc169491000 R15: 00000000200005c0 INFO: task syz-executor.5:12612 can't die for more than 146 seconds. task:syz-executor.5 state:D stack:26744 pid:12612 ppid: 6818 flags:0x00000004 Call Trace: context_switch kernel/sched/core.c:4987 [inline] __schedule+0xa9a/0x4940 kernel/sched/core.c:6268 schedule+0xd2/0x260 kernel/sched/core.c:6341 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6400 __mutex_lock_common kernel/locking/mutex.c:680 [inline] __mutex_lock+0xa32/0x12f0 kernel/locking/mutex.c:740 btrfs_mount_root+0x23b/0xc10 fs/btrfs/super.c:1681 legacy_get_tree+0x105/0x220 fs/fs_context.c:610 vfs_get_tree+0x89/0x2f0 fs/super.c:1500 fc_mount fs/namespace.c:994 [inline] vfs_kern_mount.part.0+0xd3/0x170 fs/namespace.c:1024 vfs_kern_mount+0x3c/0x60 fs/namespace.c:1011 btrfs_mount+0x234/0xa60 fs/btrfs/super.c:1786 legacy_get_tree+0x105/0x220 fs/fs_context.c:610 vfs_get_tree+0x89/0x2f0 fs/super.c:1500 do_new_mount fs/namespace.c:2988 [inline] path_mount+0x1320/0x1fa0 fs/namespace.c:3318 do_mount fs/namespace.c:3331 [inline] __do_sys_mount fs/namespace.c:3539 [inline] __se_sys_mount fs/namespace.c:3516 [inline] __x64_sys_mount+0x27f/0x300 fs/namespace.c:3516 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x7fe107fad01a RSP: 002b:00007fe105520fa8 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00000000200009c0 RCX: 00007fe107fad01a RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007fe105521000 RBP: 00007fe105521040 R08: 00007fe105521040 R09: 0000000020000000 R10: 0000000000000000 R11: 0000000000000206 R12: 0000000020000000 R13: 0000000020000100 R14: 00007fe105521000 R15: 00000000200005c0 INFO: task syz-executor.5:12612 blocked for more than 147 seconds. Not tainted 5.16.0-rc1-next-20211118-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.5 state:D stack:26744 pid:12612 ppid: 6818 flags:0x00000004 Call Trace: context_switch kernel/sched/core.c:4987 [inline] __schedule+0xa9a/0x4940 kernel/sched/core.c:6268 schedule+0xd2/0x260 kernel/sched/core.c:6341 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6400 __mutex_lock_common kernel/locking/mutex.c:680 [inline] __mutex_lock+0xa32/0x12f0 kernel/locking/mutex.c:740 btrfs_mount_root+0x23b/0xc10 fs/btrfs/super.c:1681 legacy_get_tree+0x105/0x220 fs/fs_context.c:610 vfs_get_tree+0x89/0x2f0 fs/super.c:1500 fc_mount fs/namespace.c:994 [inline] vfs_kern_mount.part.0+0xd3/0x170 fs/namespace.c:1024 vfs_kern_mount+0x3c/0x60 fs/namespace.c:1011 btrfs_mount+0x234/0xa60 fs/btrfs/super.c:1786 legacy_get_tree+0x105/0x220 fs/fs_context.c:610 vfs_get_tree+0x89/0x2f0 fs/super.c:1500 do_new_mount fs/namespace.c:2988 [inline] path_mount+0x1320/0x1fa0 fs/namespace.c:3318 do_mount fs/namespace.c:3331 [inline] __do_sys_mount fs/namespace.c:3539 [inline] __se_sys_mount fs/namespace.c:3516 [inline] __x64_sys_mount+0x27f/0x300 fs/namespace.c:3516 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x7fe107fad01a RSP: 002b:00007fe105520fa8 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00000000200009c0 RCX: 00007fe107fad01a RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007fe105521000 RBP: 00007fe105521040 R08: 00007fe105521040 R09: 0000000020000000 R10: 0000000000000000 R11: 0000000000000206 R12: 0000000020000000 R13: 0000000020000100 R14: 00007fe105521000 R15: 00000000200005c0 Showing all locks held in the system: 1 lock held by khungtaskd/26: #0: ffffffff8bb83ba0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 kernel/locking/lockdep.c:6458 1 lock held by systemd-udevd/2971: #0: ffff88801a58c118 (&disk->open_mutex){+.+.}-{3:3}, at: blkdev_get_by_dev.part.0+0x9b/0xb50 block/bdev.c:819 1 lock held by in:imklog/6320: #0: ffff8880753f0370 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0xe9/0x100 fs/file.c:990 1 lock held by systemd-udevd/15545: #0: ffff88801a58c118 (&disk->open_mutex){+.+.}-{3:3}, at: blkdev_get_by_dev.part.0+0x9b/0xb50 block/bdev.c:819 1 lock held by kworker/u4:5/16883: 4 locks held by syz-executor.0/12524: #0: ffff8880813b80e0 (&type->s_umount_key#70/1){+.+.}-{3:3}, at: alloc_super+0x1dd/0xac0 fs/super.c:229 #1: ffffffff8c25fb88 (uuid_mutex){+.+.}-{3:3}, at: btrfs_close_devices+0x86/0x4b0 fs/btrfs/volumes.c:1192 #2: ffff88801a58c118 (&disk->open_mutex){+.+.}-{3:3}, at: blkdev_put+0x97/0x9e0 block/bdev.c:914 #3: ffff88814712d360 (&lo->lo_mutex){+.+.}-{3:3}, at: lo_release+0x4d/0x1f0 drivers/block/loop.c:1748 1 lock held by syz-executor.4/12556: #0: ffffffff8c25fb88 (uuid_mutex){+.+.}-{3:3}, at: btrfs_mount_root+0x23b/0xc10 fs/btrfs/super.c:1681 1 lock held by syz-executor.2/12576: #0: ffffffff8c25fb88 (uuid_mutex){+.+.}-{3:3}, at: btrfs_mount_root+0x23b/0xc10 fs/btrfs/super.c:1681 1 lock held by syz-executor.3/12579: #0: ffffffff8c25fb88 (uuid_mutex){+.+.}-{3:3}, at: btrfs_mount_root+0x23b/0xc10 fs/btrfs/super.c:1681 1 lock held by syz-executor.5/12612: #0: ffffffff8c25fb88 (uuid_mutex){+.+.}-{3:3}, at: btrfs_mount_root+0x23b/0xc10 fs/btrfs/super.c:1681 ============================================= NMI backtrace for cpu 0 CPU: 0 PID: 26 Comm: khungtaskd Not tainted 5.16.0-rc1-next-20211118-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106 nmi_cpu_backtrace.cold+0x47/0x144 lib/nmi_backtrace.c:111 nmi_trigger_cpumask_backtrace+0x1b3/0x230 lib/nmi_backtrace.c:62 trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:254 [inline] watchdog+0xcb7/0xed0 kernel/hung_task.c:339 kthread+0x405/0x4f0 kernel/kthread.c:327 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 2954 Comm: systemd-journal Not tainted 5.16.0-rc1-next-20211118-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:mark_held_locks+0x2d/0xe0 kernel/locking/lockdep.c:4194 Code: 00 00 00 00 fc ff df 41 56 41 55 41 54 49 89 fc 48 81 c7 60 0a 00 00 48 89 fa 55 89 f5 53 48 c1 ea 03 48 83 ec 08 0f b6 04 02 <84> c0 74 08 3c 03 0f 8e 89 00 00 00 41 8b 84 24 60 0a 00 00 31 db RSP: 0018:ffffc90001adf9c8 EFLAGS: 00000092 RAX: 0000000000000000 RBX: ffff88807ba40000 RCX: 1ffffffff1b21789 RDX: 1ffff1100f74814c RSI: 0000000000000006 RDI: ffff88807ba40a60 RBP: 0000000000000006 R08: 0000000000000000 R09: 0000000000000001 R10: ffffffff817dea08 R11: 000000000000002f R12: ffff88807ba40000 R13: 0000000000000000 R14: ffff88801e510400 R15: ffff88801e510450 FS: 00007f3236aa78c0(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f3232a81010 CR3: 0000000022379000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __trace_hardirqs_on_caller kernel/locking/lockdep.c:4232 [inline] lockdep_hardirqs_on_prepare kernel/locking/lockdep.c:4292 [inline] lockdep_hardirqs_on_prepare+0x28b/0x400 kernel/locking/lockdep.c:4244 trace_hardirqs_on+0x5b/0x1c0 kernel/trace/trace_preemptirq.c:49 seqcount_lockdep_reader_access include/linux/seqlock.h:105 [inline] set_root+0x3cf/0x5b0 fs/namei.c:940 nd_jump_root+0x3c8/0x570 fs/namei.c:961 path_init+0x1020/0x1920 fs/namei.c:2359 path_parentat+0x22/0x1c0 fs/namei.c:2495 filename_parentat+0x1bb/0x5a0 fs/namei.c:2519 filename_create+0xa1/0x480 fs/namei.c:3637 do_mkdirat+0x94/0x300 fs/namei.c:3898 __do_sys_mkdir fs/namei.c:3929 [inline] __se_sys_mkdir fs/namei.c:3927 [inline] __x64_sys_mkdir+0xf2/0x140 fs/namei.c:3927 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x7f3235d62687 Code: 00 b8 ff ff ff ff c3 0f 1f 40 00 48 8b 05 09 d8 2b 00 64 c7 00 5f 00 00 00 b8 ff ff ff ff c3 0f 1f 40 00 b8 53 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d e1 d7 2b 00 f7 d8 64 89 01 48 RSP: 002b:00007ffdb55a8618 EFLAGS: 00000293 ORIG_RAX: 0000000000000053 RAX: ffffffffffffffda RBX: 00007ffdb55ab530 RCX: 00007f3235d62687 RDX: 00007f32367d3a00 RSI: 00000000000001ed RDI: 0000564ea142a8a0 RBP: 00007ffdb55a8650 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000069 R11: 0000000000000293 R12: 0000000000000000 R13: 0000000000000000 R14: 00007ffdb55ab530 R15: 00007ffdb55a8b40 ---------------- Code disassembly (best guess), 6 bytes skipped: 0: df 41 56 filds 0x56(%rcx) 3: 41 55 push %r13 5: 41 54 push %r12 7: 49 89 fc mov %rdi,%r12 a: 48 81 c7 60 0a 00 00 add $0xa60,%rdi 11: 48 89 fa mov %rdi,%rdx 14: 55 push %rbp 15: 89 f5 mov %esi,%ebp 17: 53 push %rbx 18: 48 c1 ea 03 shr $0x3,%rdx 1c: 48 83 ec 08 sub $0x8,%rsp 20: 0f b6 04 02 movzbl (%rdx,%rax,1),%eax * 24: 84 c0 test %al,%al <-- trapping instruction 26: 74 08 je 0x30 28: 3c 03 cmp $0x3,%al 2a: 0f 8e 89 00 00 00 jle 0xb9 30: 41 8b 84 24 60 0a 00 mov 0xa60(%r12),%eax 37: 00 38: 31 db xor %ebx,%ebx