UDF-fs: Scanning with blocksize 4096 failed print_req_error: I/O error, dev loop9, sector 64 print_req_error: I/O error, dev loop9, sector 1024 UDF-fs: error (device loop9): udf_read_tagged: read failed, block=256, location=256 INFO: task syz-executor109:8169 blocked for more than 140 seconds. print_req_error: I/O error, dev loop11, sector 64 Not tainted 4.19.165-syzkaller #0 UDF-fs: warning (device loop7): udf_load_vrs: No anchor found UDF-fs: error (device loop11): udf_read_tagged: read failed, block=256, location=256 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. UDF-fs: error (device loop9): udf_read_tagged: read failed, block=512, location=512 UDF-fs: error (device loop11): udf_read_tagged: read failed, block=512, location=512 UDF-fs: warning (device loop1): udf_load_vrs: No VRS found UDF-fs: Scanning with blocksize 512 failed syz-executor109 D29672 8169 8124 0x00000004 UDF-fs: warning (device loop9): udf_load_vrs: No anchor found UDF-fs: error (device loop7): udf_read_tagged: read failed, block=256, location=256 UDF-fs: Scanning with blocksize 512 failed Call Trace: UDF-fs: Scanning with blocksize 2048 failed context_switch kernel/sched/core.c:2828 [inline] __schedule+0x887/0x2040 kernel/sched/core.c:3517 UDF-fs: warning (device loop11): udf_load_vrs: No anchor found UDF-fs: error (device loop7): udf_read_tagged: read failed, block=512, location=512 UDF-fs: error (device loop9): udf_read_tagged: read failed, block=256, location=256 UDF-fs: warning (device loop1): udf_load_vrs: No VRS found UDF-fs: Scanning with blocksize 4096 failed schedule+0x8d/0x1b0 kernel/sched/core.c:3561 UDF-fs: warning (device loop11): udf_fill_super: No partition found (1) UDF-fs: Scanning with blocksize 1024 failed __rwsem_down_write_failed_common kernel/locking/rwsem-xadd.c:589 [inline] rwsem_down_write_failed+0x3aa/0x760 kernel/locking/rwsem-xadd.c:618 UDF-fs: error (device loop11): udf_read_tagged: read failed, block=256, location=256 UDF-fs: error (device loop9): udf_read_tagged: read failed, block=512, location=512 UDF-fs: error (device loop11): udf_read_tagged: read failed, block=512, location=512 UDF-fs: warning (device loop7): udf_load_vrs: No anchor found UDF-fs: warning (device loop1): udf_load_vrs: No VRS found UDF-fs: warning (device loop11): udf_load_vrs: No anchor found UDF-fs: Scanning with blocksize 2048 failed UDF-fs: Scanning with blocksize 512 failed call_rwsem_down_write_failed+0x13/0x20 arch/x86/lib/rwsem.S:117 UDF-fs: warning (device loop9): udf_load_vrs: No anchor found UDF-fs: warning (device loop1): udf_load_vrs: No VRS found UDF-fs: Scanning with blocksize 4096 failed __down_write arch/x86/include/asm/rwsem.h:142 [inline] down_write+0x4f/0x90 kernel/locking/rwsem.c:72 UDF-fs: Scanning with blocksize 1024 failed UDF-fs: error (device loop11): udf_read_tagged: read failed, block=256, location=256 UDF-fs: Scanning with blocksize 4096 failed UDF-fs: error (device loop7): udf_read_tagged: read failed, block=256, location=256 UDF-fs: warning (device loop9): udf_fill_super: No partition found (1) grab_super+0xa2/0x350 fs/super.c:383 UDF-fs: error (device loop11): udf_read_tagged: read failed, block=512, location=512 UDF-fs: error (device loop7): udf_read_tagged: read failed, block=512, location=512 UDF-fs: error (device loop9): udf_read_tagged: read failed, block=256, location=256 UDF-fs: error (device loop9): udf_read_tagged: read failed, block=512, location=512 UDF-fs: warning (device loop1): udf_load_vrs: No VRS found UDF-fs: warning (device loop7): udf_load_vrs: No anchor found UDF-fs: warning (device loop11): udf_load_vrs: No anchor found UDF-fs: Scanning with blocksize 512 failed sget_userns+0x352/0xcd0 fs/super.c:511 UDF-fs: warning (device loop9): udf_load_vrs: No anchor found UDF-fs: Scanning with blocksize 2048 failed UDF-fs: warning (device loop1): udf_load_vrs: No VRS found UDF-fs: Scanning with blocksize 512 failed UDF-fs: Scanning with blocksize 1024 failed UDF-fs: error (device loop7): udf_read_tagged: read failed, block=256, location=256 UDF-fs: Scanning with blocksize 1024 failed UDF-fs: error (device loop9): udf_read_tagged: read failed, block=256, location=256 sget+0x102/0x140 fs/super.c:570 UDF-fs: error (device loop7): udf_read_tagged: read failed, block=512, location=512 mount_bdev+0xf8/0x3b0 fs/super.c:1131 UDF-fs: error (device loop11): udf_read_tagged: read failed, block=256, location=256 UDF-fs: error (device loop9): udf_read_tagged: read failed, block=512, location=512 UDF-fs: error (device loop11): udf_read_tagged: read failed, block=512, location=512 UDF-fs: warning (device loop1): udf_load_vrs: No VRS found UDF-fs: Scanning with blocksize 2048 failed UDF-fs: warning (device loop7): udf_load_vrs: No anchor found mount_fs+0xa3/0x30c fs/super.c:1261 UDF-fs: warning (device loop9): udf_load_vrs: No anchor found UDF-fs: warning (device loop11): udf_load_vrs: No anchor found UDF-fs: warning (device loop1): udf_load_vrs: No VRS found vfs_kern_mount.part.0+0x68/0x470 fs/namespace.c:961 UDF-fs: Scanning with blocksize 4096 failed UDF-fs: Scanning with blocksize 1024 failed UDF-fs: Scanning with blocksize 4096 failed UDF-fs: warning (device loop7): udf_fill_super: No partition found (1) vfs_kern_mount fs/namespace.c:951 [inline] do_new_mount fs/namespace.c:2469 [inline] do_mount+0x113c/0x2f10 fs/namespace.c:2799 UDF-fs: Scanning with blocksize 2048 failed UDF-fs: error (device loop11): udf_read_tagged: read failed, block=256, location=256 UDF-fs: error (device loop9): udf_read_tagged: read failed, block=256, location=256 UDF-fs: error (device loop11): udf_read_tagged: read failed, block=512, location=512 UDF-fs: error (device loop7): udf_read_tagged: read failed, block=256, location=256 UDF-fs: error (device loop9): udf_read_tagged: read failed, block=512, location=512 UDF-fs: warning (device loop11): udf_load_vrs: No anchor found UDF-fs: error (device loop7): udf_read_tagged: read failed, block=512, location=512 UDF-fs: Scanning with blocksize 4096 failed UDF-fs: warning (device loop1): udf_load_vrs: No VRS found UDF-fs: warning (device loop11): udf_fill_super: No partition found (1) UDF-fs: warning (device loop9): udf_load_vrs: No anchor found UDF-fs: warning (device loop7): udf_load_vrs: No anchor found UDF-fs: Scanning with blocksize 512 failed UDF-fs: Scanning with blocksize 2048 failed UDF-fs: Scanning with blocksize 512 failed UDF-fs: warning (device loop1): udf_load_vrs: No VRS found UDF-fs: error (device loop9): udf_read_tagged: read failed, block=256, location=256 ksys_mount+0xcf/0x130 fs/namespace.c:3015 UDF-fs: error (device loop7): udf_read_tagged: read failed, block=256, location=256 UDF-fs: error (device loop11): udf_read_tagged: read failed, block=256, location=256 UDF-fs: Scanning with blocksize 1024 failed UDF-fs: error (device loop9): udf_read_tagged: read failed, block=512, location=512 __do_sys_mount fs/namespace.c:3029 [inline] __se_sys_mount fs/namespace.c:3026 [inline] __x64_sys_mount+0xba/0x150 fs/namespace.c:3026 UDF-fs: error (device loop7): udf_read_tagged: read failed, block=512, location=512 UDF-fs: error (device loop11): udf_read_tagged: read failed, block=512, location=512 UDF-fs: warning (device loop9): udf_load_vrs: No anchor found UDF-fs: warning (device loop7): udf_load_vrs: No anchor found UDF-fs: warning (device loop11): udf_load_vrs: No anchor found UDF-fs: warning (device loop1): udf_load_vrs: No VRS found UDF-fs: Scanning with blocksize 4096 failed do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 UDF-fs: warning (device loop9): udf_fill_super: No partition found (1) UDF-fs: Scanning with blocksize 2048 failed UDF-fs: Scanning with blocksize 1024 failed UDF-fs: Scanning with blocksize 512 failed entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x44b189 UDF-fs: warning (device loop1): udf_load_vrs: No VRS found UDF-fs: error (device loop7): udf_read_tagged: read failed, block=256, location=256 Code: dd c9 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 ab c9 fb ff c3 66 2e 0f 1f 84 00 00 00 00 UDF-fs: error (device loop7): udf_read_tagged: read failed, block=512, location=512 UDF-fs: Scanning with blocksize 4096 failed UDF-fs: error (device loop9): udf_read_tagged: read failed, block=256, location=256 UDF-fs: error (device loop9): udf_read_tagged: read failed, block=512, location=512 UDF-fs: error (device loop11): udf_read_tagged: read failed, block=256, location=256 UDF-fs: warning (device loop9): udf_load_vrs: No anchor found UDF-fs: warning (device loop1): udf_load_vrs: No VRS found UDF-fs: Scanning with blocksize 512 failed RSP: 002b:00007f0f2fde9ce8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 UDF-fs: warning (device loop7): udf_load_vrs: No anchor found UDF-fs: error (device loop11): udf_read_tagged: read failed, block=512, location=512 UDF-fs: Scanning with blocksize 512 failed UDF-fs: warning (device loop1): udf_load_vrs: No VRS found UDF-fs: Scanning with blocksize 2048 failed RAX: ffffffffffffffda RBX: 00000000006dcc48 RCX: 000000000044b189 UDF-fs: error (device loop9): udf_read_tagged: read failed, block=256, location=256 UDF-fs: Scanning with blocksize 1024 failed UDF-fs: error (device loop7): udf_read_tagged: read failed, block=256, location=256 RDX: 0000000020000040 RSI: 0000000020000280 RDI: 00000000200004c0 UDF-fs: warning (device loop11): udf_load_vrs: No anchor found UDF-fs: error (device loop9): udf_read_tagged: read failed, block=512, location=512 RBP: 00000000006dcc40 R08: 0000000000000000 R09: 0000000000000000 UDF-fs: Scanning with blocksize 1024 failed UDF-fs: error (device loop7): udf_read_tagged: read failed, block=512, location=512 UDF-fs: warning (device loop1): udf_load_vrs: No VRS found UDF-fs: warning (device loop9): udf_load_vrs: No anchor found R10: 0000000000000000 R11: 0000000000000246 R12: 00000000006dcc4c UDF-fs: error (device loop11): udf_read_tagged: read failed, block=256, location=256 UDF-fs: warning (device loop7): udf_load_vrs: No anchor found UDF-fs: Scanning with blocksize 2048 failed R13: 00007ffe3d6b65af R14: 00007f0f2fdea9c0 R15: 0000000000000001 UDF-fs: error (device loop11): udf_read_tagged: read failed, block=512, location=512 UDF-fs: Scanning with blocksize 1024 failed UDF-fs: warning (device loop1): udf_load_vrs: No VRS found INFO: task syz-executor109:8173 blocked for more than 140 seconds. UDF-fs: Scanning with blocksize 4096 failed UDF-fs: warning (device loop11): udf_load_vrs: No anchor found UDF-fs: Scanning with blocksize 4096 failed UDF-fs: error (device loop9): udf_read_tagged: read failed, block=256, location=256 UDF-fs: warning (device loop7): udf_fill_super: No partition found (1) Not tainted 4.19.165-syzkaller #0 UDF-fs: Scanning with blocksize 2048 failed "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. UDF-fs: error (device loop9): udf_read_tagged: read failed, block=512, location=512 syz-executor109 D29672 8173 8125 0x00000004 UDF-fs: error (device loop7): udf_read_tagged: read failed, block=256, location=256 UDF-fs: warning (device loop9): udf_load_vrs: No anchor found UDF-fs: error (device loop7): udf_read_tagged: read failed, block=512, location=512 UDF-fs: error (device loop11): udf_read_tagged: read failed, block=256, location=256 Call Trace: context_switch kernel/sched/core.c:2828 [inline] __schedule+0x887/0x2040 kernel/sched/core.c:3517 UDF-fs: error (device loop11): udf_read_tagged: read failed, block=512, location=512 UDF-fs: Scanning with blocksize 2048 failed UDF-fs: error (device loop9): udf_read_tagged: read failed, block=256, location=256 UDF-fs: warning (device loop1): udf_load_vrs: No VRS found UDF-fs: warning (device loop7): udf_load_vrs: No anchor found UDF-fs: Scanning with blocksize 512 failed UDF-fs: warning (device loop11): udf_load_vrs: No anchor found UDF-fs: error (device loop7): udf_read_tagged: read failed, block=256, location=256 UDF-fs: Scanning with blocksize 512 failed UDF-fs: error (device loop9): udf_read_tagged: read failed, block=512, location=512 UDF-fs: Scanning with blocksize 4096 failed UDF-fs: error (device loop7): udf_read_tagged: read failed, block=512, location=512 schedule+0x8d/0x1b0 kernel/sched/core.c:3561 UDF-fs: warning (device loop1): udf_load_vrs: No VRS found UDF-fs: warning (device loop9): udf_load_vrs: No anchor found UDF-fs: warning (device loop11): udf_fill_super: No partition found (1) UDF-fs: warning (device loop7): udf_load_vrs: No anchor found __rwsem_down_write_failed_common kernel/locking/rwsem-xadd.c:589 [inline] rwsem_down_write_failed+0x3aa/0x760 kernel/locking/rwsem-xadd.c:618 UDF-fs: Scanning with blocksize 4096 failed UDF-fs: Scanning with blocksize 1024 failed UDF-fs: warning (device loop9): udf_fill_super: No partition found (1) UDF-fs: Scanning with blocksize 1024 failed UDF-fs: warning (device loop1): udf_load_vrs: No VRS found UDF-fs: error (device loop9): udf_read_tagged: read failed, block=256, location=256 UDF-fs: Scanning with blocksize 2048 failed UDF-fs: warning (device loop1): udf_load_vrs: No VRS found UDF-fs: error (device loop11): udf_read_tagged: read failed, block=256, location=256 UDF-fs: error (device loop11): udf_read_tagged: read failed, block=512, location=512 UDF-fs: error (device loop9): udf_read_tagged: read failed, block=512, location=512 UDF-fs: Scanning with blocksize 4096 failed UDF-fs: error (device loop7): udf_read_tagged: read failed, block=256, location=256 UDF-fs: warning (device loop1): udf_load_vrs: No VRS found UDF-fs: warning (device loop9): udf_load_vrs: No anchor found UDF-fs: Scanning with blocksize 512 failed UDF-fs: warning (device loop11): udf_load_vrs: No anchor found UDF-fs: warning (device loop1): udf_load_vrs: No VRS found UDF-fs: Scanning with blocksize 512 failed UDF-fs: error (device loop7): udf_read_tagged: read failed, block=512, location=512 UDF-fs: Scanning with blocksize 1024 failed UDF-fs: Scanning with blocksize 512 failed UDF-fs: error (device loop9): udf_read_tagged: read failed, block=256, location=256 UDF-fs: error (device loop11): udf_read_tagged: read failed, block=256, location=256 UDF-fs: warning (device loop7): udf_load_vrs: No anchor found UDF-fs: warning (device loop1): udf_load_vrs: No VRS found call_rwsem_down_write_failed+0x13/0x20 arch/x86/lib/rwsem.S:117 UDF-fs: error (device loop9): udf_read_tagged: read failed, block=512, location=512 __down_write arch/x86/include/asm/rwsem.h:142 [inline] down_write+0x4f/0x90 kernel/locking/rwsem.c:72 UDF-fs: Scanning with blocksize 2048 failed UDF-fs: Scanning with blocksize 2048 failed UDF-fs: error (device loop11): udf_read_tagged: read failed, block=512, location=512 UDF-fs: warning (device loop1): udf_load_vrs: No VRS found UDF-fs: warning (device loop9): udf_load_vrs: No anchor found grab_super+0xa2/0x350 fs/super.c:383 UDF-fs: warning (device loop11): udf_load_vrs: No anchor found UDF-fs: Scanning with blocksize 4096 failed UDF-fs: Scanning with blocksize 1024 failed UDF-fs: error (device loop9): udf_read_tagged: read failed, block=256, location=256 UDF-fs: Scanning with blocksize 1024 failed UDF-fs: error (device loop7): udf_read_tagged: read failed, block=256, location=256 UDF-fs: error (device loop9): udf_read_tagged: read failed, block=512, location=512 UDF-fs: error (device loop11): udf_read_tagged: read failed, block=256, location=256 sget_userns+0x352/0xcd0 fs/super.c:511 UDF-fs: warning (device loop9): udf_load_vrs: No anchor found UDF-fs: error (device loop11): udf_read_tagged: read failed, block=512, location=512 UDF-fs: error (device loop7): udf_read_tagged: read failed, block=512, location=512 UDF-fs: warning (device loop11): udf_load_vrs: No anchor found UDF-fs: Scanning with blocksize 2048 failed UDF-fs: Scanning with blocksize 2048 failed UDF-fs: warning (device loop7): udf_load_vrs: No anchor found UDF-fs: error (device loop9): udf_read_tagged: read failed, block=256, location=256 sget+0x102/0x140 fs/super.c:570 mount_bdev+0xf8/0x3b0 fs/super.c:1131 UDF-fs: error (device loop11): udf_read_tagged: read failed, block=256, location=256 UDF-fs: warning (device loop1): udf_load_vrs: No VRS found UDF-fs: error (device loop9): udf_read_tagged: read failed, block=512, location=512 mount_fs+0xa3/0x30c fs/super.c:1261 UDF-fs: error (device loop11): udf_read_tagged: read failed, block=512, location=512 UDF-fs: Scanning with blocksize 4096 failed vfs_kern_mount.part.0+0x68/0x470 fs/namespace.c:961 UDF-fs: Scanning with blocksize 512 failed vfs_kern_mount fs/namespace.c:951 [inline] do_new_mount fs/namespace.c:2469 [inline] do_mount+0x113c/0x2f10 fs/namespace.c:2799 UDF-fs: warning (device loop9): udf_load_vrs: No anchor found UDF-fs: warning (device loop11): udf_load_vrs: No anchor found UDF-fs: warning (device loop1): udf_load_vrs: No VRS found UDF-fs: Scanning with blocksize 4096 failed UDF-fs: warning (device loop7): udf_fill_super: No partition found (1) UDF-fs: Scanning with blocksize 4096 failed UDF-fs: warning (device loop9): udf_fill_super: No partition found (1) UDF-fs: Scanning with blocksize 1024 failed UDF-fs: warning (device loop11): udf_fill_super: No partition found (1) UDF-fs: warning (device loop1): udf_load_vrs: No VRS found UDF-fs: Scanning with blocksize 2048 failed UDF-fs: warning (device loop1): udf_load_vrs: No VRS found UDF-fs: error (device loop7): udf_read_tagged: read failed, block=256, location=256 ksys_mount+0xcf/0x130 fs/namespace.c:3015 UDF-fs: Scanning with blocksize 4096 failed UDF-fs: error (device loop9): udf_read_tagged: read failed, block=256, location=256 UDF-fs: error (device loop11): udf_read_tagged: read failed, block=256, location=256 __do_sys_mount fs/namespace.c:3029 [inline] __se_sys_mount fs/namespace.c:3026 [inline] __x64_sys_mount+0xba/0x150 fs/namespace.c:3026 UDF-fs: warning (device loop1): udf_load_vrs: No VRS found UDF-fs: error (device loop9): udf_read_tagged: read failed, block=512, location=512 UDF-fs: Scanning with blocksize 512 failed UDF-fs: error (device loop7): udf_read_tagged: read failed, block=512, location=512 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 UDF-fs: warning (device loop9): udf_load_vrs: No anchor found UDF-fs: error (device loop11): udf_read_tagged: read failed, block=512, location=512 entry_SYSCALL_64_after_hwframe+0x49/0xbe UDF-fs: warning (device loop1): udf_load_vrs: No VRS found UDF-fs: Scanning with blocksize 512 failed RIP: 0033:0x44b189 Code: dd c9 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 ab c9 fb ff c3 66 2e 0f 1f 84 00 00 00 00 UDF-fs: warning (device loop7): udf_load_vrs: No anchor found UDF-fs: Scanning with blocksize 1024 failed UDF-fs: error (device loop9): udf_read_tagged: read failed, block=256, location=256 UDF-fs: warning (device loop11): udf_load_vrs: No anchor found UDF-fs: error (device loop9): udf_read_tagged: read failed, block=512, location=512 UDF-fs: warning (device loop1): udf_load_vrs: No VRS found RSP: 002b:00007f0f2fde9ce8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 UDF-fs: Scanning with blocksize 512 failed UDF-fs: warning (device loop9): udf_load_vrs: No anchor found UDF-fs: Scanning with blocksize 2048 failed RAX: ffffffffffffffda RBX: 00000000006dcc48 RCX: 000000000044b189 UDF-fs: Scanning with blocksize 512 failed UDF-fs: Scanning with blocksize 1024 failed UDF-fs: error (device loop11): udf_read_tagged: read failed, block=256, location=256 RDX: 0000000020000040 RSI: 0000000020000280 RDI: 00000000200004c0 UDF-fs: error (device loop9): udf_read_tagged: read failed, block=256, location=256 UDF-fs: warning (device loop1): udf_load_vrs: No VRS found UDF-fs: error (device loop7): udf_read_tagged: read failed, block=256, location=256 RBP: 00000000006dcc40 R08: 0000000000000000 R09: 0000000000000000 UDF-fs: error (device loop11): udf_read_tagged: read failed, block=512, location=512 UDF-fs: error (device loop9): udf_read_tagged: read failed, block=512, location=512 UDF-fs: Scanning with blocksize 4096 failed UDF-fs: error (device loop7): udf_read_tagged: read failed, block=512, location=512 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000006dcc4c UDF-fs: warning (device loop9): udf_load_vrs: No anchor found UDF-fs: warning (device loop11): udf_load_vrs: No anchor found R13: 00007ffe3d6b65af R14: 00007f0f2fdea9c0 R15: 0000000000000001 UDF-fs: warning (device loop7): udf_load_vrs: No anchor found UDF-fs: Scanning with blocksize 2048 failed UDF-fs: Scanning with blocksize 1024 failed UDF-fs: error (device loop9): udf_read_tagged: read failed, block=256, location=256 UDF-fs: error (device loop11): udf_read_tagged: read failed, block=256, location=256 Showing all locks held in the system: UDF-fs: warning (device loop1): udf_load_vrs: No VRS found UDF-fs: Scanning with blocksize 1024 failed UDF-fs: error (device loop9): udf_read_tagged: read failed, block=512, location=512 UDF-fs: Scanning with blocksize 512 failed UDF-fs: error (device loop7): udf_read_tagged: read failed, block=256, location=256 UDF-fs: error (device loop11): udf_read_tagged: read failed, block=512, location=512 1 lock held by khungtaskd/1566: UDF-fs: warning (device loop1): udf_load_vrs: No VRS found #0: 0000000071c0eafc (rcu_read_lock){....}, at: debug_show_all_locks+0x53/0x265 kernel/locking/lockdep.c:4440 UDF-fs: warning (device loop9): udf_load_vrs: No anchor found UDF-fs: Scanning with blocksize 1024 failed UDF-fs: error (device loop7): udf_read_tagged: read failed, block=512, location=512 UDF-fs: warning (device loop11): udf_load_vrs: No anchor found UDF-fs: Scanning with blocksize 4096 failed UDF-fs: warning (device loop1): udf_load_vrs: No VRS found UDF-fs: warning (device loop9): udf_fill_super: No partition found (1) UDF-fs: warning (device loop7): udf_load_vrs: No anchor found UDF-fs: Scanning with blocksize 2048 failed 1 lock held by in:imklog/7795: UDF-fs: Scanning with blocksize 2048 failed UDF-fs: error (device loop9): udf_read_tagged: read failed, block=256, location=256 UDF-fs: error (device loop11): udf_read_tagged: read failed, block=256, location=256 #0: 00000000f984b4f7 (&f->f_pos_lock){+.+.}, at: __fdget_pos+0x26f/0x310 fs/file.c:767 UDF-fs: warning (device loop1): udf_load_vrs: No VRS found UDF-fs: error (device loop9): udf_read_tagged: read failed, block=512, location=512 UDF-fs: Scanning with blocksize 2048 failed UDF-fs: Scanning with blocksize 4096 failed UDF-fs: warning (device loop9): udf_load_vrs: No anchor found UDF-fs: error (device loop11): udf_read_tagged: read failed, block=512, location=512 2 locks held by syz-executor109/8132: 2 locks held by syz-executor109/8169: #0: 00000000a1e4b57e (&bdev->bd_fsfreeze_mutex){+.+.}, at: mount_bdev+0x90/0x3b0 fs/super.c:1125 UDF-fs: error (device loop7): udf_read_tagged: read failed, block=256, location=256 UDF-fs: warning (device loop11): udf_load_vrs: No anchor found UDF-fs: Scanning with blocksize 512 failed UDF-fs: error (device loop7): udf_read_tagged: read failed, block=512, location=512 UDF-fs: warning (device loop1): udf_load_vrs: No VRS found UDF-fs: Scanning with blocksize 512 failed UDF-fs: Scanning with blocksize 4096 failed #1: 00000000b5cb22d9 (&type->s_umount_key#47){+.+.}, at: grab_super+0xa2/0x350 fs/super.c:383 UDF-fs: warning (device loop11): udf_fill_super: No partition found (1) UDF-fs: error (device loop9): udf_read_tagged: read failed, block=256, location=256 1 lock held by syz-executor109/8142: UDF-fs: warning (device loop7): udf_load_vrs: No anchor found 2 locks held by syz-executor109/8173: UDF-fs: warning (device loop1): udf_load_vrs: No VRS found UDF-fs: error (device loop11): udf_read_tagged: read failed, block=256, location=256 UDF-fs: Scanning with blocksize 4096 failed UDF-fs: Scanning with blocksize 1024 failed UDF-fs: warning (device loop7): udf_fill_super: No partition found (1) UDF-fs: error (device loop9): udf_read_tagged: read failed, block=512, location=512 UDF-fs: error (device loop7): udf_read_tagged: read failed, block=256, location=256 #0: 00000000a40ce7aa (&bdev->bd_fsfreeze_mutex){+.+.}, at: mount_bdev+0x90/0x3b0 fs/super.c:1125 UDF-fs: error (device loop11): udf_read_tagged: read failed, block=512, location=512 UDF-fs: warning (device loop11): udf_load_vrs: No anchor found UDF-fs: error (device loop7): udf_read_tagged: read failed, block=512, location=512 #1: 000000005d0e33b0 (&type->s_umount_key#47){+.+.}, at: grab_super+0xa2/0x350 fs/super.c:383 UDF-fs: warning (device loop1): udf_load_vrs: No VRS found UDF-fs: Scanning with blocksize 2048 failed UDF-fs: warning (device loop9): udf_load_vrs: No anchor found UDF-fs: warning (device loop7): udf_load_vrs: No anchor found UDF-fs: Scanning with blocksize 512 failed UDF-fs: Scanning with blocksize 512 failed UDF-fs: Scanning with blocksize 1024 failed UDF-fs: error (device loop11): udf_read_tagged: read failed, block=256, location=256 1 lock held by syz-executor109/18217: UDF-fs: error (device loop7): udf_read_tagged: read failed, block=256, location=256 UDF-fs: error (device loop9): udf_read_tagged: read failed, block=256, location=256 UDF-fs: error (device loop11): udf_read_tagged: read failed, block=512, location=512 UDF-fs: warning (device loop1): udf_load_vrs: No VRS found UDF-fs: error (device loop7): udf_read_tagged: read failed, block=512, location=512 UDF-fs: warning (device loop11): udf_load_vrs: No anchor found 1 lock held by syz-executor109/18218: UDF-fs: error (device loop9): udf_read_tagged: read failed, block=512, location=512 UDF-fs: warning (device loop7): udf_load_vrs: No anchor found UDF-fs: Scanning with blocksize 1024 failed 1 lock held by syz-executor109/18219: 1 lock held by syz-executor109/18227: UDF-fs: Scanning with blocksize 1024 failed UDF-fs: Scanning with blocksize 4096 failed UDF-fs: error (device loop7): udf_read_tagged: read failed, block=256, location=256 UDF-fs: error (device loop11): udf_read_tagged: read failed, block=256, location=256 UDF-fs: warning (device loop9): udf_load_vrs: No anchor found ============================================= UDF-fs: error (device loop7): udf_read_tagged: read failed, block=512, location=512 UDF-fs: Scanning with blocksize 2048 failed NMI backtrace for cpu 1 CPU: 1 PID: 1566 Comm: khungtaskd Not tainted 4.19.165-syzkaller #0 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+0x1fc/0x2fe lib/dump_stack.c:118 nmi_cpu_backtrace.cold+0x63/0xa2 lib/nmi_backtrace.c:101 nmi_trigger_cpumask_backtrace+0x1a6/0x1eb lib/nmi_backtrace.c:62 trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:203 [inline] watchdog+0x991/0xe60 kernel/hung_task.c:287 kthread+0x33f/0x460 kernel/kthread.c:259 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 4673 Comm: systemd-journal Not tainted 4.19.165-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:__lock_acquire+0x9ac/0x3ff0 kernel/locking/lockdep.c:3392 Code: 41 89 85 80 08 00 00 0f 87 cb 07 00 00 3b 05 9b a6 44 0b 41 bf 01 00 00 00 0f 86 e8 f7 ff ff 89 05 89 a6 44 0b e9 dd f7 ff ff <41> 81 f8 ff 1f 00 00 0f 87 0a 08 00 00 49 8d 9d 78 08 00 00 48 ba RSP: 0018:ffff8880a23bfae8 EFLAGS: 00000046 RAX: 0000000000000001 RBX: 0000000000000000 RCX: 1ffff1101447613d RDX: 0000000000000004 RSI: ffff8880a23b09c8 RDI: ffffffff8cd57570 RBP: ffff8880a23b09ea R08: 0000000000000001 R09: 0000000000000000 R10: ffff8880a23b09c8 R11: 0000000000000000 R12: 00000000000c0001 R13: ffff8880a23b0140 R14: ffff8880a23b09e0 R15: 0000000000000000 FS: 00007f0aa264b8c0(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f0a9e422008 CR3: 00000000a2090000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: lock_acquire+0x170/0x3c0 kernel/locking/lockdep.c:3907 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline] _raw_spin_lock_irqsave+0x8c/0xc0 kernel/locking/spinlock.c:152 debug_object_active_state lib/debugobjects.c:725 [inline] debug_object_active_state+0x104/0x330 lib/debugobjects.c:713 debug_rcu_head_queue kernel/rcu/rcu.h:194 [inline] __call_rcu.constprop.0+0x4a/0x7f0 kernel/rcu/tree.c:2977 task_work_run+0x148/0x1c0 kernel/task_work.c:113 tracehook_notify_resume include/linux/tracehook.h:193 [inline] exit_to_usermode_loop+0x251/0x2a0 arch/x86/entry/common.c:167 prepare_exit_to_usermode arch/x86/entry/common.c:198 [inline] syscall_return_slowpath arch/x86/entry/common.c:271 [inline] do_syscall_64+0x538/0x620 arch/x86/entry/common.c:296 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7f0aa1bdb840 Code: 73 01 c3 48 8b 0d 68 77 20 00 f7 d8 64 89 01 48 83 c8 ff c3 66 0f 1f 44 00 00 83 3d 89 bb 20 00 00 75 10 b8 02 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 31 c3 48 83 ec 08 e8 1e f6 ff ff 48 89 04 24 RSP: 002b:00007ffd2404a018 EFLAGS: 00000246 ORIG_RAX: 0000000000000002 RAX: fffffffffffffffe RBX: 00007ffd2404a320 RCX: 00007f0aa1bdb840 RDX: 00000000000001a0 RSI: 0000000000080042 RDI: 000055cf6fefe580 RBP: 000000000000000d R08: 000000000000c0ff R09: 00000000ffffffff R10: 0000000000000069 R11: 0000000000000246 R12: 00000000ffffffff R13: 000055cf6fef1040 R14: 00007ffd2404a2e0 R15: 000055cf6fefe3a0 UDF-fs: warning (device loop7): udf_load_vrs: No anchor found UDF-fs: error (device loop11): udf_read_tagged: read failed, block=512, location=512 UDF-fs: warning (device loop1): udf_load_vrs: No VRS found UDF-fs: warning (device loop11): udf_load_vrs: No anchor found UDF-fs: Scanning with blocksize 2048 failed UDF-fs: error (device loop9): udf_read_tagged: read failed, block=256, location=256 UDF-fs: error (device loop7): udf_read_tagged: read failed, block=256, location=256 UDF-fs: Scanning with blocksize 2048 failed UDF-fs: Scanning with blocksize 512 failed UDF-fs: error (device loop11): udf_read_tagged: read failed, block=256, location=256 UDF-fs: error (device loop7): udf_read_tagged: read failed, block=512, location=512