print_req_error: I/O error, dev loop1, sector 512 flags 0 UDF-fs: error (device loop1): udf_read_tagged: read failed, block=256, location=256 print_req_error: I/O error, dev loop1, sector 1024 flags 0 UDF-fs: error (device loop1): udf_read_tagged: read failed, block=512, location=512 UDF-fs: error (device loop1): udf_read_tagged: tag version 0x0000 != 0x0002 || 0x0003, block 0 INFO: task syz-executor408:7735 blocked for more than 140 seconds. Not tainted 5.0.0-rc2+ #34 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor408 D26776 7735 7730 0x00000004 Call Trace: context_switch kernel/sched/core.c:2831 [inline] __schedule+0x897/0x1e60 kernel/sched/core.c:3472 schedule+0xfe/0x350 kernel/sched/core.c:3516 __rwsem_down_write_failed_common+0xa4d/0x1620 kernel/locking/rwsem-xadd.c:577 rwsem_down_write_failed+0xe/0x10 kernel/locking/rwsem-xadd.c:606 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+0xa5/0x130 kernel/locking/rwsem.c:72 grab_super+0xbf/0x410 fs/super.c:384 sget_userns+0x442/0xf50 fs/super.c:512 sget+0x10c/0x150 fs/super.c:571 mount_bdev+0xff/0x3c0 fs/super.c:1132 udf_mount+0x35/0x40 fs/udf/super.c:131 mount_fs+0x123/0x43a fs/super.c:1258 vfs_kern_mount.part.0+0xdb/0x570 fs/namespace.c:959 vfs_kern_mount fs/namespace.c:949 [inline] do_new_mount fs/namespace.c:2513 [inline] do_mount+0x58e/0x3330 fs/namespace.c:2847 ksys_mount+0xdb/0x150 fs/namespace.c:3063 __do_sys_mount fs/namespace.c:3077 [inline] __se_sys_mount fs/namespace.c:3074 [inline] __x64_sys_mount+0xbe/0x150 fs/namespace.c:3074 do_syscall_64+0x1a3/0x800 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x44a349 Code: 25 70 3a 20 66 69 6c 74 65 72 4f 4b 3a 25 64 20 73 74 61 74 65 3a 25 64 20 65 78 65 63 57 68 65 6e 50 72 65 76 3a 25 64 20 70 <72> 65 76 57 61 73 53 75 73 70 3a 25 64 0a 00 49 6e 76 61 6c 69 64 RSP: 002b:00007fbe14ac6db8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00000000006dbc28 RCX: 000000000044a349 RDX: 0000000020000100 RSI: 0000000020000080 RDI: 00000000200002c0 RBP: 00000000006dbc20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000006dbc2c R13: 00007ffca0d0335f R14: 00007fbe14ac79c0 R15: 00000000006dbc20 INFO: task syz-executor408:7746 blocked for more than 140 seconds. Not tainted 5.0.0-rc2+ #34 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor408 D27144 7746 7739 0x00000004 Call Trace: context_switch kernel/sched/core.c:2831 [inline] __schedule+0x897/0x1e60 kernel/sched/core.c:3472 schedule+0xfe/0x350 kernel/sched/core.c:3516 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3574 __mutex_lock_common kernel/locking/mutex.c:1002 [inline] __mutex_lock+0xa3b/0x1670 kernel/locking/mutex.c:1072 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1087 mount_bdev+0x93/0x3c0 fs/super.c:1126 udf_mount+0x35/0x40 fs/udf/super.c:131 mount_fs+0x123/0x43a fs/super.c:1258 vfs_kern_mount.part.0+0xdb/0x570 fs/namespace.c:959 vfs_kern_mount fs/namespace.c:949 [inline] do_new_mount fs/namespace.c:2513 [inline] do_mount+0x58e/0x3330 fs/namespace.c:2847 ksys_mount+0xdb/0x150 fs/namespace.c:3063 __do_sys_mount fs/namespace.c:3077 [inline] __se_sys_mount fs/namespace.c:3074 [inline] __x64_sys_mount+0xbe/0x150 fs/namespace.c:3074 do_syscall_64+0x1a3/0x800 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x44a349 Code: 25 70 3a 20 66 69 6c 74 65 72 4f 4b 3a 25 64 20 73 74 61 74 65 3a 25 64 20 65 78 65 63 57 68 65 6e 50 72 65 76 3a 25 64 20 70 <72> 65 76 57 61 73 53 75 73 70 3a 25 64 0a 00 49 6e 76 61 6c 69 64 RSP: 002b:00007fbe14ac6db8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00000000006dbc28 RCX: 000000000044a349 RDX: 0000000020000100 RSI: 0000000020000080 RDI: 00000000200002c0 RBP: 00000000006dbc20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000006dbc2c R13: 00007ffca0d0335f R14: 00007fbe14ac79c0 R15: 00000000006dbc20 INFO: task syz-executor408:7747 blocked for more than 140 seconds. Not tainted 5.0.0-rc2+ #34 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor408 D27680 7747 7738 0x00000004 Call Trace: context_switch kernel/sched/core.c:2831 [inline] __schedule+0x897/0x1e60 kernel/sched/core.c:3472 schedule+0xfe/0x350 kernel/sched/core.c:3516 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3574 __mutex_lock_common kernel/locking/mutex.c:1002 [inline] __mutex_lock+0xa3b/0x1670 kernel/locking/mutex.c:1072 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1087 mount_bdev+0x93/0x3c0 fs/super.c:1126 udf_mount+0x35/0x40 fs/udf/super.c:131 mount_fs+0x123/0x43a fs/super.c:1258 vfs_kern_mount.part.0+0xdb/0x570 fs/namespace.c:959 vfs_kern_mount fs/namespace.c:949 [inline] do_new_mount fs/namespace.c:2513 [inline] do_mount+0x58e/0x3330 fs/namespace.c:2847 ksys_mount+0xdb/0x150 fs/namespace.c:3063 __do_sys_mount fs/namespace.c:3077 [inline] __se_sys_mount fs/namespace.c:3074 [inline] __x64_sys_mount+0xbe/0x150 fs/namespace.c:3074 do_syscall_64+0x1a3/0x800 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x44a349 Code: 25 70 3a 20 66 69 6c 74 65 72 4f 4b 3a 25 64 20 73 74 61 74 65 3a 25 64 20 65 78 65 63 57 68 65 6e 50 72 65 76 3a 25 64 20 70 <72> 65 76 57 61 73 53 75 73 70 3a 25 64 0a 00 49 6e 76 61 6c 69 64 RSP: 002b:00007fbe14ac6db8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00000000006dbc28 RCX: 000000000044a349 RDX: 0000000020000100 RSI: 0000000020000080 RDI: 00000000200002c0 RBP: 00000000006dbc20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000006dbc2c R13: 00007ffca0d0335f R14: 00007fbe14ac79c0 R15: 00000000006dbc20 INFO: task syz-executor408:7745 blocked for more than 140 seconds. Not tainted 5.0.0-rc2+ #34 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor408 D26792 7745 7731 0x00000004 Call Trace: context_switch kernel/sched/core.c:2831 [inline] __schedule+0x897/0x1e60 kernel/sched/core.c:3472 schedule+0xfe/0x350 kernel/sched/core.c:3516 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3574 __mutex_lock_common kernel/locking/mutex.c:1002 [inline] __mutex_lock+0xa3b/0x1670 kernel/locking/mutex.c:1072 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1087 mount_bdev+0x93/0x3c0 fs/super.c:1126 udf_mount+0x35/0x40 fs/udf/super.c:131 mount_fs+0x123/0x43a fs/super.c:1258 vfs_kern_mount.part.0+0xdb/0x570 fs/namespace.c:959 vfs_kern_mount fs/namespace.c:949 [inline] do_new_mount fs/namespace.c:2513 [inline] do_mount+0x58e/0x3330 fs/namespace.c:2847 ksys_mount+0xdb/0x150 fs/namespace.c:3063 __do_sys_mount fs/namespace.c:3077 [inline] __se_sys_mount fs/namespace.c:3074 [inline] __x64_sys_mount+0xbe/0x150 fs/namespace.c:3074 do_syscall_64+0x1a3/0x800 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x44a349 Code: Bad RIP value. RSP: 002b:00007fbe14ac6db8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00000000006dbc28 RCX: 000000000044a349 RDX: 0000000020000100 RSI: 0000000020000080 RDI: 00000000200002c0 RBP: 00000000006dbc20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000006dbc2c R13: 00007ffca0d0335f R14: 00007fbe14ac79c0 R15: 00000000006dbc20 INFO: task syz-executor408:7748 blocked for more than 140 seconds. Not tainted 5.0.0-rc2+ #34 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor408 D27680 7748 7729 0x00000004 Call Trace: context_switch kernel/sched/core.c:2831 [inline] __schedule+0x897/0x1e60 kernel/sched/core.c:3472 schedule+0xfe/0x350 kernel/sched/core.c:3516 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3574 __mutex_lock_common kernel/locking/mutex.c:1002 [inline] __mutex_lock+0xa3b/0x1670 kernel/locking/mutex.c:1072 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1087 mount_bdev+0x93/0x3c0 fs/super.c:1126 udf_mount+0x35/0x40 fs/udf/super.c:131 mount_fs+0x123/0x43a fs/super.c:1258 vfs_kern_mount.part.0+0xdb/0x570 fs/namespace.c:959 vfs_kern_mount fs/namespace.c:949 [inline] do_new_mount fs/namespace.c:2513 [inline] do_mount+0x58e/0x3330 fs/namespace.c:2847 ksys_mount+0xdb/0x150 fs/namespace.c:3063 __do_sys_mount fs/namespace.c:3077 [inline] __se_sys_mount fs/namespace.c:3074 [inline] __x64_sys_mount+0xbe/0x150 fs/namespace.c:3074 do_syscall_64+0x1a3/0x800 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x44a349 Code: 25 70 3a 20 66 69 6c 74 65 72 4f 4b 3a 25 64 20 73 74 61 74 65 3a 25 64 20 65 78 65 63 57 68 65 6e 50 72 65 76 3a 25 64 20 70 <72> 65 76 57 61 73 53 75 73 70 3a 25 64 0a 00 49 6e 76 61 6c 69 64 RSP: 002b:00007fbe14ac6db8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00000000006dbc28 RCX: 000000000044a349 RDX: 0000000020000100 RSI: 0000000020000080 RDI: 00000000200002c0 RBP: 00000000006dbc20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000006dbc2c R13: 00007ffca0d0335f R14: 00007fbe14ac79c0 R15: 00000000006dbc20 Showing all locks held in the system: 1 lock held by khungtaskd/1040: #0: 000000005cef0633 (rcu_read_lock){....}, at: debug_show_all_locks+0xc6/0x41d kernel/locking/lockdep.c:4389 3 locks held by rs:main Q:Reg/7610: 1 lock held by rsyslogd/7613: #0: 0000000017e93e16 (&f->f_pos_lock){+.+.}, at: __fdget_pos+0x1b3/0x1f0 fs/file.c:795 2 locks held by getty/7702: #0: 000000000776fc69 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341 #1: 000000000921311c (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x30a/0x1eb0 drivers/tty/n_tty.c:2154 2 locks held by getty/7703: #0: 000000006336411b (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341 #1: 000000004b4063d2 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x30a/0x1eb0 drivers/tty/n_tty.c:2154 2 locks held by getty/7704: #0: 00000000f2eae59a (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341 #1: 00000000d82941fc (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x30a/0x1eb0 drivers/tty/n_tty.c:2154 2 locks held by getty/7705: #0: 00000000a414b10f (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341 #1: 000000005a1a36bf (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x30a/0x1eb0 drivers/tty/n_tty.c:2154 2 locks held by getty/7706: #0: 000000002d16479b (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341 #1: 0000000052217145 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x30a/0x1eb0 drivers/tty/n_tty.c:2154 2 locks held by getty/7707: #0: 00000000067a7d57 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341 #1: 00000000ff79236d (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x30a/0x1eb0 drivers/tty/n_tty.c:2154 2 locks held by getty/7708: #0: 00000000d62041ba (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341 #1: 00000000cc0038b2 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x30a/0x1eb0 drivers/tty/n_tty.c:2154 1 lock held by syz-executor408/7734: 2 locks held by syz-executor408/7735: #0: 00000000dc228d08 (&bdev->bd_fsfreeze_mutex){+.+.}, at: mount_bdev+0x93/0x3c0 fs/super.c:1126 #1: 00000000f7d96870 (&type->s_umount_key#39){+.+.}, at: grab_super+0xbf/0x410 fs/super.c:384 1 lock held by syz-executor408/7746: #0: 00000000dc228d08 (&bdev->bd_fsfreeze_mutex){+.+.}, at: mount_bdev+0x93/0x3c0 fs/super.c:1126 1 lock held by syz-executor408/7747: #0: 00000000dc228d08 (&bdev->bd_fsfreeze_mutex){+.+.}, at: mount_bdev+0x93/0x3c0 fs/super.c:1126 1 lock held by syz-executor408/7745: #0: 00000000dc228d08 (&bdev->bd_fsfreeze_mutex){+.+.}, at: mount_bdev+0x93/0x3c0 fs/super.c:1126 1 lock held by syz-executor408/7748: #0: 00000000dc228d08 (&bdev->bd_fsfreeze_mutex){+.+.}, at: mount_bdev+0x93/0x3c0 fs/super.c:1126 ============================================= NMI backtrace for cpu 1 CPU: 1 PID: 1040 Comm: khungtaskd Not tainted 5.0.0-rc2+ #34 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+0x1db/0x2d0 lib/dump_stack.c:113 nmi_cpu_backtrace.cold+0x63/0xa4 lib/nmi_backtrace.c:101 nmi_trigger_cpumask_backtrace+0x1be/0x236 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+0xbbb/0x1170 kernel/hung_task.c:287 kthread+0x357/0x430 kernel/kthread.c:246 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: 7734 Comm: syz-executor408 Not tainted 5.0.0-rc2+ #34 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:match_held_lock+0x23/0x780 kernel/locking/lockdep.c:3398 Code: 1f 84 00 00 00 00 00 48 b9 00 00 00 00 00 fc ff df 55 48 89 e5 41 57 48 8d 95 58 ff ff ff 41 56 41 55 4c 8d 75 d8 48 c1 ea 03 <49> 89 fd 41 54 48 8d 04 0a 48 83 c7 10 49 89 d4 53 48 81 ec a0 00 RSP: 0018:ffff88809637eec0 EFLAGS: 00000806 RAX: 0000000000000005 RBX: ffff888089f7e3c0 RCX: dffffc0000000000 RDX: 1ffff11012c6fdc6 RSI: ffffffff899a3f40 RDI: ffff888089f7ec68 RBP: ffff88809637eed8 R08: ffff888089f7e3c0 R09: ffffed1015cc5b90 R10: ffffed1015cc5b8f R11: ffff8880ae62dc7b R12: ffffffff899a3f40 R13: ffffed10113efd87 R14: ffff88809637eeb0 R15: ffff888089f7ec68 FS: 00007fbe14ac7700(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffffffff600400 CR3: 000000008da5b000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __lock_is_held+0xb6/0x140 kernel/locking/lockdep.c:3661 lock_is_held_type+0x110/0x210 kernel/locking/lockdep.c:3879 lock_is_held include/linux/lockdep.h:337 [inline] rcu_read_lock_held kernel/rcu/update.c:281 [inline] rcu_read_lock_held+0xa3/0xd0 kernel/rcu/update.c:273 xa_entry include/linux/xarray.h:902 [inline] xas_reload include/linux/xarray.h:1250 [inline] find_get_entry+0xbeb/0x10a0 mm/filemap.c:1501 pagecache_get_page+0xe6/0x1020 mm/filemap.c:1579 find_or_create_page include/linux/pagemap.h:322 [inline] grow_dev_page fs/buffer.c:947 [inline] grow_buffers fs/buffer.c:1016 [inline] __getblk_slow fs/buffer.c:1043 [inline] __getblk_gfp+0x38a/0xd20 fs/buffer.c:1320 __bread_gfp+0x2f/0x300 fs/buffer.c:1354 sb_bread include/linux/buffer_head.h:307 [inline] udf_tread+0xf1/0x140 fs/udf/misc.c:44 udf_read_tagged+0x50/0x530 fs/udf/misc.c:210 udf_check_anchor_block+0x1d5/0x640 fs/udf/super.c:1775 udf_scan_anchors+0x4b5/0x850 fs/udf/super.c:1837 udf_find_anchor fs/udf/super.c:1880 [inline] udf_load_vrs+0x968/0xdd0 fs/udf/super.c:1937 udf_fill_super+0xbac/0x2383 fs/udf/super.c:2132 mount_bdev+0x307/0x3c0 fs/super.c:1159 udf_mount+0x35/0x40 fs/udf/super.c:131 mount_fs+0x123/0x43a fs/super.c:1258 vfs_kern_mount.part.0+0xdb/0x570 fs/namespace.c:959 vfs_kern_mount fs/namespace.c:949 [inline] do_new_mount fs/namespace.c:2513 [inline] do_mount+0x58e/0x3330 fs/namespace.c:2847 ksys_mount+0xdb/0x150 fs/namespace.c:3063 __do_sys_mount fs/namespace.c:3077 [inline] __se_sys_mount fs/namespace.c:3074 [inline] __x64_sys_mount+0xbe/0x150 fs/namespace.c:3074 do_syscall_64+0x1a3/0x800 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x44a349 Code: 6d cc 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 3b cc fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007fbe14ac6db8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00000000006dbc28 RCX: 000000000044a349 RDX: 0000000020000100 RSI: 0000000020000080 RDI: 00000000200002c0 RBP: 00000000006dbc20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000006dbc2c R13: 00007ffca0d0335f R14: 00007fbe14ac79c0 R15: 00000000006dbc20