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 INFO: task syz-executor369:8191 blocked for more than 140 seconds. UDF-fs: error (device loop9): udf_read_tagged: read failed, block=512, location=512 Not tainted 4.19.163-syzkaller #0 UDF-fs: warning (device loop1): udf_load_vrs: No VRS found UDF-fs: warning (device loop11): 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 1024 failed 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 1024 failed "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. UDF-fs: error (device loop11): udf_read_tagged: read failed, block=256, location=256 UDF-fs: Scanning with blocksize 1024 failed syz-executor369 D29752 8191 8144 0x00000004 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: Scanning with blocksize 2048 failed Call Trace: UDF-fs: warning (device loop1): udf_load_vrs: No VRS found 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: Scanning with blocksize 2048 failed 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: Scanning with blocksize 2048 failed UDF-fs: warning (device loop7): udf_load_vrs: No anchor found 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: error (device loop9): udf_read_tagged: read failed, block=512, location=512 UDF-fs: Scanning with blocksize 2048 failed schedule+0x8d/0x1b0 kernel/sched/core.c:3561 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 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 __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: warning (device loop7): udf_load_vrs: No anchor found UDF-fs: Scanning with blocksize 512 failed UDF-fs: warning (device loop9): 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 loop7): udf_fill_super: No partition found (1) UDF-fs: Scanning with blocksize 4096 failed UDF-fs: warning (device loop11): udf_load_vrs: No anchor found UDF-fs: Scanning with blocksize 1024 failed UDF-fs: Scanning with blocksize 4096 failed UDF-fs: warning (device loop9): udf_fill_super: No partition found (1) UDF-fs: error (device loop7): udf_read_tagged: read failed, block=256, location=256 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: error (device loop7): udf_read_tagged: read failed, block=512, location=512 call_rwsem_down_write_failed+0x13/0x20 arch/x86/lib/rwsem.S:117 UDF-fs: error (device loop9): udf_read_tagged: read failed, block=256, location=256 UDF-fs: Scanning with blocksize 2048 failed UDF-fs: error (device loop11): udf_read_tagged: read failed, block=256, location=256 __down_write arch/x86/include/asm/rwsem.h:142 [inline] down_write+0x4f/0x90 kernel/locking/rwsem.c:72 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: 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: Scanning with blocksize 4096 failed grab_super+0xa2/0x350 fs/super.c:383 UDF-fs: Scanning with blocksize 512 failed 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=256, location=256 UDF-fs: Scanning with blocksize 512 failed UDF-fs: error (device loop9): udf_read_tagged: read failed, block=256, location=256 sget_userns+0x352/0xcd0 fs/super.c:511 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 loop7): 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: 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: Scanning with blocksize 512 failed 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 1024 failed sget+0x102/0x140 fs/super.c:570 mount_bdev+0xf8/0x3b0 fs/super.c:1131 UDF-fs: Scanning with blocksize 1024 failed UDF-fs: Scanning with blocksize 1024 failed UDF-fs: Scanning with blocksize 1024 failed UDF-fs: error (device loop7): udf_read_tagged: read failed, block=256, location=256 mount_fs+0xa3/0x30c fs/super.c:1261 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=256, location=256 vfs_kern_mount.part.0+0x68/0x470 fs/namespace.c:961 UDF-fs: error (device loop7): udf_read_tagged: read failed, block=512, location=512 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 loop7): udf_load_vrs: No anchor found 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 loop9): udf_read_tagged: read failed, block=512, location=512 UDF-fs: warning (device loop11): udf_load_vrs: No anchor found 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 UDF-fs: error (device loop7): udf_read_tagged: read failed, block=512, location=512 UDF-fs: warning (device loop9): udf_load_vrs: No anchor found UDF-fs: Scanning with blocksize 2048 failed UDF-fs: Scanning with blocksize 2048 failed UDF-fs: Scanning with blocksize 4096 failed UDF-fs: warning (device loop7): udf_load_vrs: No anchor found 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: error (device loop11): udf_read_tagged: read failed, block=256, location=256 UDF-fs: Scanning with blocksize 4096 failed UDF-fs: warning (device loop7): udf_fill_super: No partition found (1) UDF-fs: Scanning with blocksize 512 failed 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: 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: Scanning with blocksize 1024 failed UDF-fs: Scanning with blocksize 4096 failed UDF-fs: error (device loop11): udf_read_tagged: read failed, block=512, location=512 UDF-fs: warning (device loop9): udf_fill_super: No partition found (1) ksys_mount+0xcf/0x130 fs/namespace.c:3015 UDF-fs: warning (device loop7): udf_load_vrs: No anchor found __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 loop11): udf_load_vrs: No anchor found UDF-fs: Scanning with blocksize 512 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 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 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 loop7): udf_load_vrs: No anchor found UDF-fs: Scanning with blocksize 2048 failed UDF-fs: Scanning with blocksize 1024 failed entry_SYSCALL_64_after_hwframe+0x49/0xbe 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 loop11): udf_fill_super: No partition found (1) UDF-fs: error (device loop7): udf_read_tagged: read failed, block=256, location=256 RIP: 0033:0x44b229 UDF-fs: warning (device loop9): udf_load_vrs: No anchor found UDF-fs: Scanning with blocksize 4096 failed UDF-fs: error (device loop11): 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: error (device loop11): udf_read_tagged: read failed, block=512, location=512 UDF-fs: Scanning with blocksize 512 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: Scanning with blocksize 512 failed 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 RSP: 002b:00007fe53f714ce8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 UDF-fs: warning (device loop7): udf_load_vrs: No anchor found 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 2048 failed RAX: ffffffffffffffda RBX: 00000000006dcc48 RCX: 000000000044b229 UDF-fs: Scanning with blocksize 1024 failed 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 RDX: 0000000020000000 RSI: 0000000020000180 RDI: 0000000020000080 UDF-fs: Scanning with blocksize 512 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 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=512, location=512 RBP: 00000000006dcc40 R08: 0000000000000000 R09: 0000000000000000 UDF-fs: Scanning with blocksize 1024 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 1024 failed UDF-fs: warning (device loop1): udf_load_vrs: No VRS found UDF-fs: Scanning with blocksize 2048 failed UDF-fs: Scanning with blocksize 4096 failed UDF-fs: Scanning with blocksize 2048 failed R10: 0000000000000000 R11: 0000000000000246 R12: 00000000006dcc4c 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) 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 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 R13: 00007fff2b2618bf R14: 00007fe53f7159c0 R15: 0000000000000001 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 UDF-fs: warning (device loop11): udf_load_vrs: No anchor found UDF-fs: Scanning with blocksize 512 failed UDF-fs: Scanning with blocksize 4096 failed UDF-fs: warning (device loop9): udf_fill_super: No partition found (1) UDF-fs: Scanning with blocksize 2048 failed UDF-fs: error (device loop7): udf_read_tagged: read failed, block=512, location=512 INFO: task syz-executor369:8188 blocked for more than 140 seconds. 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 Not tainted 4.19.163-syzkaller #0 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 loop7): udf_load_vrs: No anchor found "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. 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: error (device loop9): udf_read_tagged: read failed, block=512, location=512 syz-executor369 D29672 8188 8143 0x00000004 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 2048 failed Call Trace: context_switch kernel/sched/core.c:2828 [inline] __schedule+0x887/0x2040 kernel/sched/core.c:3517 UDF-fs: error (device loop7): 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 4096 failed 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 UDF-fs: Scanning with blocksize 1024 failed UDF-fs: warning (device loop11): udf_fill_super: No partition found (1) 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 loop7): udf_read_tagged: read failed, block=512, location=512 UDF-fs: warning (device loop7): udf_load_vrs: No anchor found schedule+0x8d/0x1b0 kernel/sched/core.c:3561 UDF-fs: Scanning with blocksize 2048 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 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: 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: 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 UDF-fs: warning (device loop7): udf_load_vrs: No anchor found UDF-fs: Scanning with blocksize 512 failed UDF-fs: warning (device loop9): udf_load_vrs: No anchor found UDF-fs: Scanning with blocksize 4096 failed UDF-fs: Scanning with blocksize 1024 failed call_rwsem_down_write_failed+0x13/0x20 arch/x86/lib/rwsem.S:117 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 __down_write arch/x86/include/asm/rwsem.h:142 [inline] down_write+0x4f/0x90 kernel/locking/rwsem.c:72 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) UDF-fs: Scanning with blocksize 1024 failed UDF-fs: warning (device loop11): udf_load_vrs: No anchor found grab_super+0xa2/0x350 fs/super.c:383 UDF-fs: warning (device loop1): udf_load_vrs: No VRS found UDF-fs: Scanning with blocksize 512 failed 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 UDF-fs: Scanning with blocksize 2048 failed 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 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 loop1): udf_load_vrs: No VRS found UDF-fs: Scanning with blocksize 2048 failed UDF-fs: Scanning with blocksize 512 failed UDF-fs: Scanning with blocksize 4096 failed 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=256, location=256 sget_userns+0x352/0xcd0 fs/super.c:511 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: 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: 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: 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: Scanning with blocksize 1024 failed 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: warning (device loop9): udf_load_vrs: No anchor found UDF-fs: Scanning with blocksize 1024 failed UDF-fs: Scanning with blocksize 4096 failed sget+0x102/0x140 fs/super.c:570 UDF-fs: Scanning with blocksize 2048 failed mount_bdev+0xf8/0x3b0 fs/super.c:1131 UDF-fs: warning (device loop9): udf_fill_super: No partition found (1) UDF-fs: error (device loop11): udf_read_tagged: read failed, block=256, location=256 UDF-fs: Scanning with blocksize 2048 failed UDF-fs: error (device loop7): udf_read_tagged: read failed, block=256, location=256 mount_fs+0xa3/0x30c fs/super.c:1261 vfs_kern_mount.part.0+0x68/0x470 fs/namespace.c:961 UDF-fs: warning (device loop1): udf_load_vrs: No VRS found UDF-fs: error (device loop11): 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 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 loop7): udf_load_vrs: No anchor found UDF-fs: warning (device loop11): udf_load_vrs: No anchor found UDF-fs: error (device loop9): udf_read_tagged: read failed, block=256, location=256 UDF-fs: Scanning with blocksize 2048 failed UDF-fs: Scanning with blocksize 4096 failed UDF-fs: warning (device loop11): 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 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 512 failed 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 loop9): udf_load_vrs: No anchor found UDF-fs: error (device loop11): udf_read_tagged: read failed, block=512, location=512 ksys_mount+0xcf/0x130 fs/namespace.c:3015 __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: Scanning with blocksize 512 failed UDF-fs: warning (device loop11): udf_load_vrs: No anchor found UDF-fs: Scanning with blocksize 1024 failed UDF-fs: warning (device loop7): udf_load_vrs: No anchor found 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: Scanning with blocksize 512 failed 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: error (device loop11): udf_read_tagged: read failed, block=256, location=256 entry_SYSCALL_64_after_hwframe+0x49/0xbe UDF-fs: Scanning with blocksize 4096 failed UDF-fs: error (device loop9): udf_read_tagged: read failed, block=512, location=512 RIP: 0033:0x44b229 UDF-fs: warning (device loop7): udf_fill_super: No partition found (1) UDF-fs: warning (device loop1): udf_load_vrs: No VRS found UDF-fs: error (device loop11): udf_read_tagged: read failed, block=512, location=512 UDF-fs: Scanning with blocksize 512 failed 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=256, location=256 UDF-fs: warning (device loop11): udf_load_vrs: No anchor found UDF-fs: warning (device loop9): udf_load_vrs: No anchor found UDF-fs: Scanning with blocksize 1024 failed RSP: 002b:00007fe53f714ce8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 UDF-fs: warning (device loop1): udf_load_vrs: No VRS found UDF-fs: Scanning with blocksize 1024 failed UDF-fs: error (device loop11): udf_read_tagged: read failed, block=256, location=256 RAX: ffffffffffffffda RBX: 00000000006dcc48 RCX: 000000000044b229 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=512, location=512 RDX: 0000000020000000 RSI: 0000000020000180 RDI: 0000000020000080 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: error (device loop7): udf_read_tagged: read failed, block=512, location=512 RBP: 00000000006dcc40 R08: 0000000000000000 R09: 0000000000000000 UDF-fs: warning (device loop11): udf_load_vrs: No anchor found UDF-fs: warning (device loop9): udf_load_vrs: No anchor found UDF-fs: Scanning with blocksize 2048 failed R10: 0000000000000000 R11: 0000000000000246 R12: 00000000006dcc4c UDF-fs: warning (device loop7): udf_load_vrs: No anchor found UDF-fs: Scanning with blocksize 2048 failed R13: 00007fff2b2618bf R14: 00007fe53f7159c0 R15: 0000000000000001 UDF-fs: warning (device loop1): udf_load_vrs: No VRS found UDF-fs: Scanning with blocksize 2048 failed UDF-fs: error (device loop11): udf_read_tagged: read failed, block=256, location=256 Showing all locks held in the system: UDF-fs: Scanning with blocksize 512 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 loop9): 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/1567: #0: 00000000bf85df20 (rcu_read_lock){....}, at: debug_show_all_locks+0x53/0x265 kernel/locking/lockdep.c:4440 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=512, location=512 UDF-fs: warning (device loop11): udf_load_vrs: No anchor found 1 lock held by systemd-udevd/4694: UDF-fs: warning (device loop9): udf_load_vrs: No anchor found UDF-fs: Scanning with blocksize 4096 failed 1 lock held by in:imklog/7818: UDF-fs: warning (device loop7): udf_load_vrs: No anchor found UDF-fs: warning (device loop1): udf_load_vrs: No VRS found #0: 00000000f3308c24 (&f->f_pos_lock){+.+.}, at: __fdget_pos+0x26f/0x310 fs/file.c:767 UDF-fs: Scanning with blocksize 1024 failed UDF-fs: Scanning with blocksize 4096 failed UDF-fs: warning (device loop11): udf_fill_super: No partition found (1) UDF-fs: Scanning with blocksize 512 failed UDF-fs: warning (device loop9): udf_fill_super: No partition found (1) 2 locks held by syz-executor369/8153: 2 locks held by syz-executor369/8191: UDF-fs: error (device loop9): udf_read_tagged: read failed, block=256, location=256 #0: 00000000ba419737 (&bdev->bd_fsfreeze_mutex){+.+.}, at: mount_bdev+0x90/0x3b0 fs/super.c:1125 #1: 0000000035b65d68 (&type->s_umount_key#47){+.+.}, at: grab_super+0xa2/0x350 fs/super.c:383 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: 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 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 1024 failed 1 lock held by syz-executor369/8158: 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 2 locks held by syz-executor369/8188: UDF-fs: Scanning with blocksize 2048 failed #0: 000000003573022e (&bdev->bd_fsfreeze_mutex){+.+.}, at: mount_bdev+0x90/0x3b0 fs/super.c:1125 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 2048 failed UDF-fs: Scanning with blocksize 512 failed UDF-fs: error (device loop7): udf_read_tagged: read failed, block=256, location=256 UDF-fs: Scanning with blocksize 4096 failed UDF-fs: Scanning with blocksize 512 failed #1: 000000001a95532d (&type->s_umount_key#47){+.+.}, at: grab_super+0xa2/0x350 fs/super.c:383 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: 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: error (device loop11): udf_read_tagged: read failed, block=512, location=512 UDF-fs: Scanning with blocksize 512 failed 1 lock held by syz-executor369/16548: 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: Scanning with blocksize 1024 failed 1 lock held by syz-executor369/16550: 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 loop11): udf_read_tagged: read failed, block=512, location=512 2 locks held by syz-executor369/16558: UDF-fs: warning (device loop7): udf_load_vrs: No anchor found #0: 00000000ed233c76 (&bdev->bd_fsfreeze_mutex){+.+.}, at: mount_bdev+0x90/0x3b0 fs/super.c:1125 UDF-fs: Scanning with blocksize 4096 failed UDF-fs: Scanning with blocksize 1024 failed UDF-fs: warning (device loop9): 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 #1: 0000000043040a3e (&type->s_umount_key#47){+.+.}, at: grab_super+0xa2/0x350 fs/super.c:383 UDF-fs: warning (device loop7): udf_fill_super: No partition found (1) UDF-fs: Scanning with blocksize 1024 failed UDF-fs: Scanning with blocksize 2048 failed UDF-fs: error (device loop9): udf_read_tagged: read failed, block=256, location=256 1 lock held by syz-executor369/16576: 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: Scanning with blocksize 2048 failed 3 locks held by syz-executor369/16571: UDF-fs: warning (device loop1): udf_load_vrs: No VRS found 2 locks held by syz-executor369/16573: 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 #0: 00000000fbb92e6c (&bdev->bd_fsfreeze_mutex){+.+.}, at: mount_bdev+0x90/0x3b0 fs/super.c:1125 UDF-fs: Scanning with blocksize 4096 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 2048 failed 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=256, location=256 UDF-fs: Scanning with blocksize 512 failed #1: 00000000a0964832 (&type->s_umount_key#47){+.+.}, at: grab_super+0xa2/0x350 fs/super.c:383 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 1 lock held by systemd-udevd/16583: UDF-fs: Scanning with blocksize 4096 failed UDF-fs: warning (device loop1): udf_load_vrs: No VRS found #0: 0000000095267ed3 (&rq->lock){-.-.}, at: rq_lock kernel/sched/sched.h:1830 [inline] #0: 0000000095267ed3 (&rq->lock){-.-.}, at: __schedule+0x1f9/0x2040 kernel/sched/core.c:3455 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: error (device loop7): udf_read_tagged: read failed, block=256, location=256 UDF-fs: Scanning with blocksize 512 failed 1 lock held by syz-executor369/16586: UDF-fs: warning (device loop1): udf_load_vrs: No VRS found 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: error (device loop11): udf_read_tagged: read failed, block=256, location=256 NMI backtrace for cpu 0 CPU: 0 PID: 1567 Comm: khungtaskd Not tainted 4.19.163-syzkaller #0 UDF-fs: error (device loop7): udf_read_tagged: read failed, block=512, location=512 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 0 to CPUs 1: UDF-fs: error (device loop11): udf_read_tagged: read failed, block=512, location=512 NMI backtrace for cpu 1 CPU: 1 PID: 16573 Comm: syz-executor369 Not tainted 4.19.163-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:preempt_count arch/x86/include/asm/preempt.h:23 [inline] RIP: 0010:check_kcov_mode kernel/kcov.c:67 [inline] RIP: 0010:write_comp_data+0xf/0x70 kernel/kcov.c:122 Code: 8b 11 48 83 c2 01 48 39 d0 76 07 48 89 34 d1 48 89 11 c3 0f 1f 84 00 00 00 00 00 49 89 f1 49 89 fa 65 48 8b 34 25 80 df 01 00 <65> 8b 05 9a 0e 9d 7e a9 00 01 1f 00 75 4f 8b 86 d8 12 00 00 83 f8 RSP: 0018:ffff8880ba107d80 EFLAGS: 00000046 RAX: ffff88809d87e340 RBX: 0000000000010004 RCX: ffffffff83801ea3 RDX: 0000000000010004 RSI: ffff88809d87e340 RDI: 0000000000000005 RBP: ffffffff88b3bae0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000005 R11: ffffffff8c65b05b R12: 0000000000000001 R13: ffffffff88b3baa0 R14: ffff8880ba124d00 R15: dffffc0000000000 FS: 00007fe53f736700(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f101ed20010 CR3: 000000009b74b000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: check_preemption_disabled+0x33/0x280 lib/smp_processor_id.c:15 rcu_dynticks_curr_cpu_in_eqs kernel/rcu/tree.c:348 [inline] rcu_is_watching+0x12/0xc0 kernel/rcu/tree.c:1025 rcu_read_lock_sched_held+0xc6/0x1d0 kernel/rcu/update.c:113 trace_hrtimer_cancel include/trace/events/timer.h:285 [inline] debug_deactivate kernel/time/hrtimer.c:472 [inline] __run_hrtimer kernel/time/hrtimer.c:1371 [inline] __hrtimer_run_queues+0xc21/0xe60 kernel/time/hrtimer.c:1463 hrtimer_interrupt+0x32a/0x930 kernel/time/hrtimer.c:1521 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1067 [inline] smp_apic_timer_interrupt+0x10c/0x550 arch/x86/kernel/apic/apic.c:1092 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:894 RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:789 [inline] RIP: 0010:console_trylock_spinning kernel/printk/printk.c:1724 [inline] RIP: 0010:vprintk_emit+0x668/0x740 kernel/printk/printk.c:1964 Code: 48 b8 00 00 00 00 00 fc ff df 41 80 7c 05 00 00 0f 85 d9 00 00 00 48 83 3d fc cc a1 08 00 74 37 e8 7d 1b 15 00 48 89 df 57 9d <0f> 1f 44 00 00 e9 82 fe ff ff e8 69 1b 15 00 0f 0b e8 62 1b 15 00 RSP: 0018:ffff8880b43af5c8 EFLAGS: 00000293 ORIG_RAX: ffffffffffffff13 RAX: ffff88809d87e340 RBX: 0000000000000293 RCX: 1ffff11013b0fd7d RDX: 0000000000000000 RSI: ffffffff814fb493 RDI: 0000000000000293 RBP: ffff8880b43af608 R08: ffffffff8cd0ff48 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000054 R13: 1ffffffff13e3031 R14: 0000000000000200 R15: 0000000000000001 vprintk_func+0x79/0x17e kernel/printk/printk_safe.c:397 printk+0xba/0xed kernel/printk/printk.c:2040 _udf_err+0xdc/0x110 fs/udf/super.c:2323 udf_read_tagged+0x49a/0x530 fs/udf/misc.c:212 udf_check_anchor_block+0x1b4/0x610 fs/udf/super.c:1820 udf_scan_anchors+0x488/0x5f0 fs/udf/super.c:1899 udf_find_anchor fs/udf/super.c:1917 [inline] udf_load_vrs+0x633/0xbf0 fs/udf/super.c:1982 udf_fill_super+0x7d2/0x181f fs/udf/super.c:2177 mount_bdev+0x2fc/0x3b0 fs/super.c:1158 mount_fs+0xa3/0x30c fs/super.c:1261 vfs_kern_mount.part.0+0x68/0x470 fs/namespace.c:961 vfs_kern_mount fs/namespace.c:951 [inline] do_new_mount fs/namespace.c:2469 [inline] do_mount+0x113c/0x2f10 fs/namespace.c:2799 ksys_mount+0xcf/0x130 fs/namespace.c:3015 __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 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x44b229 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 RSP: 002b:00007fe53f735ce8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00000000006dcc38 RCX: 000000000044b229 RDX: 0000000020000000 RSI: 0000000020000180 RDI: 0000000020000080 RBP: 00000000006dcc30 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000006dcc3c R13: 00007fff2b2618bf R14: 00007fe53f7369c0 R15: 0000000000000002 INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 1.066 msecs 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: warning (device loop7): udf_load_vrs: No anchor found