UDF-fs: Scanning with blocksize 4096 failed UDF-fs: warning (device loop0): udf_fill_super: No partition found (1) UDF-fs: error (device loop0): udf_read_tagged: read failed, block=256, location=256 INFO: task syz-executor131:7289 blocked for more than 140 seconds. Not tainted 4.14.151 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor131 D28528 7289 6830 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_write_failed_common kernel/locking/rwsem-xadd.c:588 [inline] rwsem_down_write_failed+0x5ce/0xb50 kernel/locking/rwsem-xadd.c:617 call_rwsem_down_write_failed+0x17/0x30 arch/x86/lib/rwsem.S:105 __down_write arch/x86/include/asm/rwsem.h:126 [inline] down_write+0x53/0x90 kernel/locking/rwsem.c:56 grab_super+0x5e/0x140 fs/super.c:373 sget_userns+0x2b0/0xc30 fs/super.c:504 sget+0xd6/0x120 fs/super.c:572 mount_bdev+0xd5/0x370 fs/super.c:1107 udf_mount+0x35/0x40 fs/udf/super.c:132 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: 0033:0x4451f9 RSP: 002b:00007ffc2b3c7e48 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00000000004451f9 RDX: 0000000020000040 RSI: 0000000020000240 RDI: 00000000200000c0 RBP: 00000000000d7ba6 R08: 0000000000000000 R09: 0000000000000001 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000402330 R13: 00000000004023c0 R14: 0000000000000000 R15: 0000000000000000 INFO: task syz-executor131:7292 blocked for more than 140 seconds. Not tainted 4.14.151 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor131 D28528 7292 6828 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 mount_bdev+0x76/0x370 fs/super.c:1101 udf_mount+0x35/0x40 fs/udf/super.c:132 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: 0033:0x4451f9 RSP: 002b:00007ffc2b3c7e48 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00000000004451f9 RDX: 0000000020000040 RSI: 0000000020000240 RDI: 00000000200000c0 RBP: 00000000000d7c8b R08: 0000000000000000 R09: 0000000000000001 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000402330 R13: 00000000004023c0 R14: 0000000000000000 R15: 0000000000000000 INFO: task syz-executor131:7295 blocked for more than 140 seconds. Not tainted 4.14.151 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor131 D28528 7295 6831 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 mount_bdev+0x76/0x370 fs/super.c:1101 udf_mount+0x35/0x40 fs/udf/super.c:132 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: 0033:0x4451f9 RSP: 002b:00007ffc2b3c7e48 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00000000004451f9 RDX: 0000000020000040 RSI: 0000000020000240 RDI: 00000000200000c0 RBP: 00000000000d7c8a R08: 0000000000000000 R09: 0000000000000001 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000402330 R13: 00000000004023c0 R14: 0000000000000000 R15: 0000000000000000 INFO: task syz-executor131:7300 blocked for more than 140 seconds. Not tainted 4.14.151 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor131 D28528 7300 6829 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 mount_bdev+0x76/0x370 fs/super.c:1101 udf_mount+0x35/0x40 fs/udf/super.c:132 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: 0033:0x4451f9 RSP: 002b:00007ffc2b3c7e48 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00000000004451f9 RDX: 0000000020000040 RSI: 0000000020000240 RDI: 00000000200000c0 RBP: 00000000000d7d0c R08: 0000000000000000 R09: 0000000000000001 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000402330 R13: 00000000004023c0 R14: 0000000000000000 R15: 0000000000000000 INFO: task syz-executor131:7304 blocked for more than 140 seconds. Not tainted 4.14.151 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor131 D28528 7304 6827 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 mount_bdev+0x76/0x370 fs/super.c:1101 udf_mount+0x35/0x40 fs/udf/super.c:132 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: 0033:0x4451f9 RSP: 002b:00007ffc2b3c7e48 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00000000004451f9 RDX: 0000000020000040 RSI: 0000000020000240 RDI: 00000000200000c0 RBP: 00000000000d7d0d R08: 0000000000000000 R09: 0000000000000001 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000402330 R13: 00000000004023c0 R14: 0000000000000000 R15: 0000000000000000 Showing all locks held in the system: 1 lock held by khungtaskd/1015: #0: (tasklist_lock){.+.+}, at: [] debug_show_all_locks+0x7f/0x21f kernel/locking/lockdep.c:4544 1 lock held by rsyslogd/6677: #0: (&f->f_pos_lock){+.+.}, at: [] __fdget_pos+0xab/0xd0 fs/file.c:769 2 locks held by getty/6800: #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/6801: #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/6802: #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/6803: #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/6804: #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/6805: #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/6806: #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 syz-executor131/7289: #0: (&bdev->bd_fsfreeze_mutex){+.+.}, at: [] mount_bdev+0x76/0x370 fs/super.c:1101 #1: (&type->s_umount_key#52){+.+.}, at: [] grab_super+0x5e/0x140 fs/super.c:373 1 lock held by syz-executor131/7292: #0: (&bdev->bd_fsfreeze_mutex){+.+.}, at: [] mount_bdev+0x76/0x370 fs/super.c:1101 1 lock held by syz-executor131/7295: #0: (&bdev->bd_fsfreeze_mutex){+.+.}, at: [] mount_bdev+0x76/0x370 fs/super.c:1101 1 lock held by syz-executor131/7300: #0: (&bdev->bd_fsfreeze_mutex){+.+.}, at: [] mount_bdev+0x76/0x370 fs/super.c:1101 1 lock held by syz-executor131/7304: #0: (&bdev->bd_fsfreeze_mutex){+.+.}, at: [] mount_bdev+0x76/0x370 fs/super.c:1101 ============================================= NMI backtrace for cpu 0 CPU: 0 PID: 1015 Comm: khungtaskd Not tainted 4.14.151 #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: 7283 Comm: syz-executor131 Not tainted 4.14.151 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 task: ffff8880964c6500 task.stack: ffff888097798000 RIP: 0010:__lock_release kernel/locking/lockdep.c:3763 [inline] RIP: 0010:lock_release+0x226/0x940 kernel/locking/lockdep.c:4013 RSP: 0018:ffff88809779f600 EFLAGS: 00000002 RAX: 0000000000000002 RBX: 1ffff11012ef3ec6 RCX: 1ffffffff0f565c0 RDX: 0000000000000004 RSI: 0000000000000001 RDI: ffff8880964c6d7c RBP: ffff88809779f698 R08: ffff8880964c6500 R09: 0000000000000002 R10: 0000000000000000 R11: ffff8880964c6500 R12: ffffffff8778f7a0 R13: ffffffff81701f15 R14: ffffffff891ad740 R15: ffff88809779f670 FS: 0000000002067880(0000) GS:ffff8880aef00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f2d44f5f140 CR3: 000000008e0e9000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: rcu_lock_release include/linux/rcupdate.h:247 [inline] rcu_read_unlock include/linux/rcupdate.h:685 [inline] find_get_entry+0x23c/0x520 mm/filemap.c:1391 pagecache_get_page+0x4a/0x750 mm/filemap.c:1464 find_or_create_page include/linux/pagemap.h:326 [inline] grow_dev_page fs/buffer.c:1004 [inline] grow_buffers fs/buffer.c:1077 [inline] __getblk_slow fs/buffer.c:1104 [inline] __getblk_gfp+0x24b/0x710 fs/buffer.c:1383 __bread_gfp+0x2e/0x290 fs/buffer.c:1417 sb_bread include/linux/buffer_head.h:307 [inline] udf_tread+0xe8/0x130 fs/udf/misc.c:44 udf_read_tagged+0x40/0x4b0 fs/udf/misc.c:210 udf_check_anchor_block+0x19b/0x580 fs/udf/super.c:1810 udf_scan_anchors+0x3ef/0x5a0 fs/udf/super.c:1889 udf_find_anchor fs/udf/super.c:1907 [inline] udf_load_vrs+0x5c4/0xae0 fs/udf/super.c:1972 udf_fill_super+0x727/0x157f fs/udf/super.c:2164 mount_bdev+0x2be/0x370 fs/super.c:1134 udf_mount+0x35/0x40 fs/udf/super.c:132 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: 0033:0x4451f9 RSP: 002b:00007ffc2b3c7e48 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00000000004451f9 RDX: 0000000020000040 RSI: 0000000020000240 RDI: 00000000200000c0 RBP: 00000000000d7b5f R08: 0000000000000000 R09: 0000000000000001 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000402330 R13: 00000000004023c0 R14: 0000000000000000 R15: 0000000000000000 Code: c1 ea 03 0f b6 14 02 4c 89 f0 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 f6 05 00 00 44 89 c8 0b 05 00 8f d2 07 0f 84 65 04 00 00 <49> 8d 4f e0 44 89 ca 4c 89 c7 4c 89 45 80 4c 89 e6 44 89 8d 78