ntfs: (device loop5): parse_options(): NLS character set none not found. SELinux: security_context_str_to_sid(staff_u) failed for (dev 9p, type 9p) errno=-22 INFO: task syz-executor.0:8766 blocked for more than 140 seconds. Not tainted 4.14.143 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.0 D27760 8766 6909 0x00000004 Call Trace: context_switch kernel/sched/core.c:2807 [inline] __schedule+0x7b8/0x1cd0 kernel/sched/core.c:3383 schedule+0x92/0x1c0 kernel/sched/core.c:3427 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3485 __mutex_lock_common kernel/locking/mutex.c:833 [inline] __mutex_lock+0x73c/0x1470 kernel/locking/mutex.c:893 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:908 blkdev_put+0x2b/0x510 fs/block_dev.c:1814 blkdev_close+0x8b/0xb0 fs/block_dev.c:1863 __fput+0x275/0x7a0 fs/file_table.c:210 ____fput+0x16/0x20 fs/file_table.c:244 task_work_run+0x114/0x190 kernel/task_work.c:113 tracehook_notify_resume include/linux/tracehook.h:191 [inline] exit_to_usermode_loop+0x1da/0x220 arch/x86/entry/common.c:164 prepare_exit_to_usermode arch/x86/entry/common.c:199 [inline] syscall_return_slowpath arch/x86/entry/common.c:270 [inline] do_syscall_64+0x4bc/0x640 arch/x86/entry/common.c:297 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x4135d1 RSP: 002b:00007ffcc964f6a0 EFLAGS: 00000293 ORIG_RAX: 0000000000000003 RAX: 0000000000000000 RBX: 0000000000000005 RCX: 00000000004135d1 RDX: 0000000000000000 RSI: 00000000000012e7 RDI: 0000000000000004 RBP: 0000000000000001 R08: 0000000063f112e8 R09: ffffffffffffffff R10: 00007ffcc964f780 R11: 0000000000000293 R12: 000000000075c9a0 R13: 000000000075c9a0 R14: 0000000000760408 R15: ffffffffffffffff INFO: task syz-executor.0:8774 blocked for more than 140 seconds. Not tainted 4.14.143 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.0 D28768 8774 6909 0x80000004 Call Trace: context_switch kernel/sched/core.c:2807 [inline] __schedule+0x7b8/0x1cd0 kernel/sched/core.c:3383 schedule+0x92/0x1c0 kernel/sched/core.c:3427 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3485 __mutex_lock_common kernel/locking/mutex.c:833 [inline] __mutex_lock+0x73c/0x1470 kernel/locking/mutex.c:893 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:908 lo_ioctl+0x8f/0x1ce0 drivers/block/loop.c:1404 __blkdev_driver_ioctl block/ioctl.c:297 [inline] blkdev_ioctl+0x96b/0x1860 block/ioctl.c:594 ioctl_by_bdev+0xa5/0x110 fs/block_dev.c:2066 isofs_get_last_session fs/isofs/inode.c:571 [inline] isofs_fill_super+0x1cbf/0x25af fs/isofs/inode.c:670 mount_bdev+0x2be/0x370 fs/super.c:1134 isofs_mount+0x35/0x40 fs/isofs/inode.c:1570 mount_fs+0x97/0x2a1 fs/super.c:1237 vfs_kern_mount.part.0+0x5e/0x3d0 fs/namespace.c:1046 vfs_kern_mount fs/namespace.c:1036 [inline] do_new_mount fs/namespace.c:2549 [inline] do_mount+0x417/0x27d0 fs/namespace.c:2879 SYSC_mount fs/namespace.c:3095 [inline] SyS_mount+0xab/0x120 fs/namespace.c:3072 do_syscall_64+0x1e8/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x45c33a RSP: 002b:00007feb697f7a88 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007feb697f7b40 RCX: 000000000045c33a RDX: 00007feb697f7ae0 RSI: 0000000020000000 RDI: 00007feb697f7b00 RBP: 0000000000000001 R08: 00007feb697f7b40 R09: 00007feb697f7ae0 R10: 0000000000000001 R11: 0000000000000206 R12: 0000000000000003 R13: 00000000004c8a7a R14: 00000000004df9f0 R15: 00000000ffffffff INFO: task syz-executor.1:8778 blocked for more than 140 seconds. Not tainted 4.14.143 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.1 D28528 8778 6907 0x00000004 Call Trace: context_switch kernel/sched/core.c:2807 [inline] __schedule+0x7b8/0x1cd0 kernel/sched/core.c:3383 schedule+0x92/0x1c0 kernel/sched/core.c:3427 __rwsem_down_read_failed_common kernel/locking/rwsem-xadd.c:292 [inline] rwsem_down_read_failed+0x1f6/0x390 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:66 [inline] down_read+0x49/0xb0 kernel/locking/rwsem.c:26 __get_super.part.0+0x1cb/0x280 fs/super.c:678 __get_super include/linux/spinlock.h:317 [inline] get_super+0x2e/0x50 fs/super.c:707 fsync_bdev+0x19/0xd0 fs/block_dev.c:495 invalidate_partition+0x36/0x60 block/genhd.c:1506 drop_partitions block/partition-generic.c:442 [inline] rescan_partitions+0xe3/0x860 block/partition-generic.c:515 __blkdev_reread_part+0x15c/0x1e0 block/ioctl.c:173 blkdev_reread_part+0x27/0x40 block/ioctl.c:193 loop_reread_partitions+0x7c/0x90 drivers/block/loop.c:614 loop_set_status+0xc25/0x11f0 drivers/block/loop.c:1183 loop_set_status_old+0x1f5/0x2d0 drivers/block/loop.c:1291 lo_ioctl+0x9fe/0x1ce0 drivers/block/loop.c:1421 __blkdev_driver_ioctl block/ioctl.c:297 [inline] blkdev_ioctl+0x96b/0x1860 block/ioctl.c:594 block_ioctl+0xde/0x120 fs/block_dev.c:1881 vfs_ioctl fs/ioctl.c:46 [inline] file_ioctl fs/ioctl.c:500 [inline] do_vfs_ioctl+0x7ae/0x1060 fs/ioctl.c:684 SYSC_ioctl fs/ioctl.c:701 [inline] SyS_ioctl+0x8f/0xc0 fs/ioctl.c:692 do_syscall_64+0x1e8/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x4598e9 RSP: 002b:00007fbb28914c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00000000004598e9 RDX: 00000000200000c0 RSI: 0000000000004c02 RDI: 0000000000000003 RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007fbb289156d4 R13: 00000000004c30c2 R14: 00000000004d6858 R15: 00000000ffffffff INFO: task syz-executor.1:8806 blocked for more than 140 seconds. Not tainted 4.14.143 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.1 D29184 8806 6907 0x00000004 Call Trace: context_switch kernel/sched/core.c:2807 [inline] __schedule+0x7b8/0x1cd0 kernel/sched/core.c:3383 schedule+0x92/0x1c0 kernel/sched/core.c:3427 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3485 __mutex_lock_common kernel/locking/mutex.c:833 [inline] __mutex_lock+0x73c/0x1470 kernel/locking/mutex.c:893 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:908 __blkdev_get+0x145/0x1120 fs/block_dev.c:1457 blkdev_get+0xa8/0x8e0 fs/block_dev.c:1612 blkdev_open+0x1d1/0x260 fs/block_dev.c:1770 do_dentry_open+0x73b/0xeb0 fs/open.c:777 vfs_open+0x105/0x220 fs/open.c:891 do_last fs/namei.c:3425 [inline] path_openat+0x8bd/0x3f70 fs/namei.c:3566 do_filp_open+0x18e/0x250 fs/namei.c:3600 do_sys_open+0x2c5/0x430 fs/open.c:1084 SYSC_open fs/open.c:1102 [inline] SyS_open+0x2d/0x40 fs/open.c:1097 do_syscall_64+0x1e8/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x4137d1 RSP: 002b:00007fbb288f37a0 EFLAGS: 00000293 ORIG_RAX: 0000000000000002 RAX: ffffffffffffffda RBX: 6666666666666667 RCX: 00000000004137d1 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00007fbb288f3850 RBP: 000000000075bfc8 R08: 000000000000000f R09: 0000000000000000 R10: 00007fbb288f49d0 R11: 0000000000000293 R12: 00007fbb288f46d4 R13: 00000000004c8cff R14: 00000000004dfcd8 R15: 00000000ffffffff INFO: task blkid:8781 blocked for more than 140 seconds. Not tainted 4.14.143 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. blkid D28720 8781 6869 0x00000004 Call Trace: context_switch kernel/sched/core.c:2807 [inline] __schedule+0x7b8/0x1cd0 kernel/sched/core.c:3383 schedule+0x92/0x1c0 kernel/sched/core.c:3427 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3485 __mutex_lock_common kernel/locking/mutex.c:833 [inline] __mutex_lock+0x73c/0x1470 kernel/locking/mutex.c:893 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:908 __blkdev_get+0x145/0x1120 fs/block_dev.c:1457 blkdev_get+0xa8/0x8e0 fs/block_dev.c:1612 blkdev_open+0x1d1/0x260 fs/block_dev.c:1770 do_dentry_open+0x73b/0xeb0 fs/open.c:777 vfs_open+0x105/0x220 fs/open.c:891 do_last fs/namei.c:3425 [inline] path_openat+0x8bd/0x3f70 fs/namei.c:3566 do_filp_open+0x18e/0x250 fs/namei.c:3600 do_sys_open+0x2c5/0x430 fs/open.c:1084 SYSC_open fs/open.c:1102 [inline] SyS_open+0x2d/0x40 fs/open.c:1097 do_syscall_64+0x1e8/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x7fea7afa2120 RSP: 002b:00007ffc47ab3fa8 EFLAGS: 00000246 ORIG_RAX: 0000000000000002 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fea7afa2120 RDX: 00007ffc47ab5f41 RSI: 0000000000000000 RDI: 00007ffc47ab5f41 RBP: 0000000000000000 R08: 0000000000000078 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000001f42030 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000005 Showing all locks held in the system: 1 lock held by khungtaskd/1013: #0: (tasklist_lock){.+.+}, at: [] debug_show_all_locks+0x7f/0x21f kernel/locking/lockdep.c:4541 1 lock held by rsyslogd/6740: #0: (&f->f_pos_lock){+.+.}, at: [] __fdget_pos+0xab/0xd0 fs/file.c:769 2 locks held by getty/6861: #0: (&tty->ldisc_sem){++++}, at: [] ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:376 #1: (&ldata->atomic_read_lock){+.+.}, at: [] n_tty_read+0x1e6/0x17b0 drivers/tty/n_tty.c:2156 2 locks held by getty/6862: #0: (&tty->ldisc_sem){++++}, at: [] ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:376 #1: (&ldata->atomic_read_lock){+.+.}, at: [] n_tty_read+0x1e6/0x17b0 drivers/tty/n_tty.c:2156 2 locks held by getty/6863: #0: (&tty->ldisc_sem){++++}, at: [] ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:376 #1: (&ldata->atomic_read_lock){+.+.}, at: [] n_tty_read+0x1e6/0x17b0 drivers/tty/n_tty.c:2156 2 locks held by getty/6864: #0: (&tty->ldisc_sem){++++}, at: [] ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:376 #1: (&ldata->atomic_read_lock){+.+.}, at: [] n_tty_read+0x1e6/0x17b0 drivers/tty/n_tty.c:2156 2 locks held by getty/6865: #0: (&tty->ldisc_sem){++++}, at: [] ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:376 #1: (&ldata->atomic_read_lock){+.+.}, at: [] n_tty_read+0x1e6/0x17b0 drivers/tty/n_tty.c:2156 2 locks held by getty/6866: #0: (&tty->ldisc_sem){++++}, at: [] ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:376 #1: (&ldata->atomic_read_lock){+.+.}, at: [] n_tty_read+0x1e6/0x17b0 drivers/tty/n_tty.c:2156 2 locks held by getty/6867: #0: (&tty->ldisc_sem){++++}, at: [] ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:376 #1: (&ldata->atomic_read_lock){+.+.}, at: [] n_tty_read+0x1e6/0x17b0 drivers/tty/n_tty.c:2156 1 lock held by syz-executor.0/8766: #0: (&bdev->bd_mutex){+.+.}, at: [] blkdev_put+0x2b/0x510 fs/block_dev.c:1814 2 locks held by syz-executor.0/8774: #0: (&type->s_umount_key#65/1){+.+.}, at: [] alloc_super fs/super.c:251 [inline] #0: (&type->s_umount_key#65/1){+.+.}, at: [] sget_userns+0x551/0xc30 fs/super.c:516 #1: (&lo->lo_ctl_mutex/1){+.+.}, at: [] lo_ioctl+0x8f/0x1ce0 drivers/block/loop.c:1404 3 locks held by syz-executor.1/8778: #0: (&lo->lo_ctl_mutex/1){+.+.}, at: [] lo_ioctl+0x8f/0x1ce0 drivers/block/loop.c:1404 #1: (&bdev->bd_mutex){+.+.}, at: [] blkdev_reread_part+0x1f/0x40 block/ioctl.c:192 #2: (&type->s_umount_key#70){.+.+}, at: [] __get_super.part.0+0x1cb/0x280 fs/super.c:678 1 lock held by syz-executor.1/8806: #0: (&bdev->bd_mutex){+.+.}, at: [] __blkdev_get+0x145/0x1120 fs/block_dev.c:1457 1 lock held by blkid/8781: #0: (&bdev->bd_mutex){+.+.}, at: [] __blkdev_get+0x145/0x1120 fs/block_dev.c:1457 ============================================= NMI backtrace for cpu 0 CPU: 0 PID: 1013 Comm: khungtaskd Not tainted 4.14.143 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x138/0x197 lib/dump_stack.c:53 nmi_cpu_backtrace.cold+0x57/0x94 lib/nmi_backtrace.c:101 nmi_trigger_cpumask_backtrace+0x141/0x189 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:140 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:195 [inline] watchdog+0x5e7/0xb90 kernel/hung_task.c:274 kthread+0x319/0x430 kernel/kthread.c:232 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:404 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 5 Comm: kworker/u4:0 Not tainted 4.14.143 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 task: ffff8880a9cc2140 task.stack: ffff8880a9cd0000 RIP: 0010:task_css include/linux/cgroup.h:481 [inline] RIP: 0010:task_ca kernel/sched/cpuacct.c:54 [inline] RIP: 0010:cpuacct_charge+0xe7/0x360 kernel/sched/cpuacct.c:360 RSP: 0018:ffff8880a9cd7bf8 EFLAGS: 00000046 RAX: dffffc0000000000 RBX: ffff8880a9cc2140 RCX: 1ffffffff0ea63a9 RDX: 1ffff11015398641 RSI: ffffffff869d2e40 RDI: ffff8880a9cc3208 RBP: ffff8880a9cd7c28 R08: 0000000000000000 R09: ffff8880a9cc2a08 R10: ffff8880a9cc29e8 R11: ffff8880a9cc2140 R12: ffffffff877ad280 R13: 0000000000005434 R14: ffff8880a9cc2210 R15: 0000000000000001 FS: 0000000000000000(0000) GS:ffff8880aef00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000130 CR3: 000000008c630000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: update_curr+0x2d9/0x6a0 kernel/sched/fair.c:856 dequeue_entity+0x1e/0xfd0 kernel/sched/fair.c:3805 dequeue_task_fair+0x60/0x4a0 kernel/sched/fair.c:5007 dequeue_task kernel/sched/core.c:773 [inline] deactivate_task+0xd3/0x340 kernel/sched/core.c:789 __schedule+0x2c4/0x1cd0 kernel/sched/core.c:3332 schedule+0x92/0x1c0 kernel/sched/core.c:3427 worker_thread+0x15e/0x1050 kernel/workqueue.c:2269 kthread+0x319/0x430 kernel/kthread.c:232 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:404 Code: 00 00 48 8d bb c8 10 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 57 02 00 00 4c 8b a3 c8 10 00 00 24 00 06 00 85 c0 74 0d 80 3d d1 69 da 06 00 0f 84 65 01 00