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: warning (device loop11): udf_load_vrs: No anchor found INFO: task syz-executor469:8166 blocked for more than 140 seconds. UDF-fs: warning (device loop9): udf_load_vrs: No anchor found Not tainted 4.19.201-syzkaller #0 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: Scanning with blocksize 2048 failed UDF-fs: Scanning with blocksize 4096 failed UDF-fs: Scanning with blocksize 512 failed syz-executor469 D29672 8166 8118 0x00000004 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: error (device loop7): udf_read_tagged: read failed, block=256, location=256 Call Trace: UDF-fs: error (device loop11): udf_read_tagged: read failed, block=512, location=512 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 loop11): udf_load_vrs: No anchor found UDF-fs: warning (device loop7): udf_load_vrs: No anchor found UDF-fs: Scanning with blocksize 4096 failed UDF-fs: Scanning with blocksize 1024 failed 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: error (device loop9): udf_read_tagged: read failed, block=256, location=256 schedule+0x8d/0x1b0 kernel/sched/core.c:3561 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: error (device loop9): udf_read_tagged: read failed, block=512, location=512 UDF-fs: Scanning with blocksize 2048 failed UDF-fs: warning (device loop9): udf_load_vrs: No anchor 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=256, location=256 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 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: warning (device loop7): udf_load_vrs: No anchor found UDF-fs: warning (device loop11): udf_load_vrs: No anchor found __down_write arch/x86/include/asm/rwsem.h:142 [inline] down_write+0x4f/0x90 kernel/locking/rwsem.c:72 UDF-fs: Scanning with blocksize 4096 failed 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 loop7): 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=256, location=256 UDF-fs: warning (device loop9): udf_load_vrs: No anchor found 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 UDF-fs: error (device loop9): udf_read_tagged: read failed, block=256, location=256 sget_userns+0x352/0xcd0 fs/super.c:511 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 UDF-fs: Scanning with blocksize 1024 failed 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: error (device loop11): udf_read_tagged: read failed, block=256, location=256 sget+0x102/0x140 fs/super.c:570 UDF-fs: Scanning with blocksize 2048 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 mount_bdev+0xf8/0x3b0 fs/super.c:1131 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 loop7): udf_read_tagged: read failed, block=512, location=512 mount_fs+0xa3/0x310 fs/super.c:1261 UDF-fs: Scanning with blocksize 2048 failed UDF-fs: error (device loop9): udf_read_tagged: read failed, block=512, location=512 vfs_kern_mount.part.0+0x68/0x470 fs/namespace.c:961 UDF-fs: error (device loop11): udf_read_tagged: read failed, block=256, location=256 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 loop9): udf_load_vrs: No anchor found UDF-fs: Scanning with blocksize 1024 failed 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=256, location=256 UDF-fs: warning (device loop9): udf_fill_super: No partition found (1) 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: 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 4096 failed ksys_mount+0xcf/0x130 fs/namespace.c:3015 UDF-fs: warning (device loop9): udf_load_vrs: No anchor found UDF-fs: Scanning with blocksize 2048 failed __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_fill_super: No partition found (1) UDF-fs: Scanning with blocksize 512 failed 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 loop9): udf_read_tagged: read failed, block=256, location=256 entry_SYSCALL_64_after_hwframe+0x49/0xbe UDF-fs: error (device loop7): udf_read_tagged: read failed, block=512, location=512 RIP: 0033:0x44aa99 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 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48 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 4096 failed print_req_error: 293 callbacks suppressed print_req_error: I/O error, dev loop11, sector 512 UDF-fs: Scanning with blocksize 1024 failed UDF-fs: error (device loop11): udf_read_tagged: read failed, block=512, location=512 print_req_error: I/O error, dev loop9, sector 64 UDF-fs: warning (device loop7): udf_fill_super: No partition found (1) print_req_error: I/O error, dev loop9, sector 1024 RSP: 002b:00007fc8bc2a8208 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 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 RAX: ffffffffffffffda RBX: 00000000004cb4e8 RCX: 000000000044aa99 print_req_error: I/O error, dev loop7, sector 64 UDF-fs: Scanning with blocksize 512 failed print_req_error: I/O error, dev loop7, sector 256 RDX: 0000000020000180 RSI: 0000000020000080 RDI: 0000000020000100 UDF-fs: error (device loop7): udf_read_tagged: read failed, block=256, location=256 RBP: 00000000004cb4e0 R08: 0000000000000000 R09: 0000000000000000 print_req_error: I/O error, dev loop11, sector 64 print_req_error: I/O error, dev loop11, sector 512 UDF-fs: error (device loop11): udf_read_tagged: read failed, block=256, location=256 print_req_error: I/O error, dev loop9, sector 2048 UDF-fs: error (device loop9): udf_read_tagged: read failed, block=512, location=512 print_req_error: I/O error, dev loop11, sector 1024 print_req_error: I/O error, dev loop7, sector 512 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 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000004cb4ec UDF-fs: warning (device loop9): udf_load_vrs: No anchor found UDF-fs: warning (device loop11): udf_load_vrs: No anchor found R13: 00007ffc49dfd72f R14: 00007fc8bc2a8300 R15: 0000000000022000 UDF-fs: Scanning with blocksize 2048 failed INFO: task syz-executor469:8167 blocked for more than 140 seconds. UDF-fs: warning (device loop7): udf_load_vrs: No anchor found UDF-fs: Scanning with blocksize 1024 failed UDF-fs: error (device loop11): udf_read_tagged: read failed, block=256, location=256 Not tainted 4.19.201-syzkaller #0 UDF-fs: error (device loop9): 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 loop11): udf_read_tagged: read failed, block=512, location=512 UDF-fs: Scanning with blocksize 512 failed syz-executor469 D29672 8167 8120 0x00000004 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=256, location=256 Call Trace: context_switch kernel/sched/core.c:2828 [inline] __schedule+0x887/0x2040 kernel/sched/core.c:3517 UDF-fs: Scanning with blocksize 2048 failed UDF-fs: warning (device loop9): udf_load_vrs: No anchor 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 schedule+0x8d/0x1b0 kernel/sched/core.c:3561 __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 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) UDF-fs: Scanning with blocksize 1024 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 4096 failed 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: warning (device loop11): udf_fill_super: No partition found (1) 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 __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: Scanning with blocksize 2048 failed UDF-fs: error (device loop11): udf_read_tagged: read failed, block=512, location=512 grab_super+0xa2/0x350 fs/super.c:383 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 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 loop9): udf_load_vrs: No anchor found UDF-fs: error (device loop11): udf_read_tagged: read failed, block=256, location=256 sget_userns+0x352/0xcd0 fs/super.c:511 UDF-fs: Scanning with blocksize 512 failed 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: error (device loop9): udf_read_tagged: read failed, block=256, location=256 UDF-fs: Scanning with blocksize 4096 failed 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 loop7): udf_fill_super: No partition found (1) UDF-fs: Scanning with blocksize 1024 failed UDF-fs: warning (device loop9): udf_load_vrs: No anchor found UDF-fs: error (device loop11): udf_read_tagged: read failed, block=256, location=256 sget+0x102/0x140 fs/super.c:570 UDF-fs: Scanning with blocksize 1024 failed mount_bdev+0xf8/0x3b0 fs/super.c:1131 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 mount_fs+0xa3/0x310 fs/super.c:1261 vfs_kern_mount.part.0+0x68/0x470 fs/namespace.c:961 UDF-fs: error (device loop9): 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: 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: 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: Scanning with blocksize 2048 failed UDF-fs: error (device loop11): 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 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=512, location=512 UDF-fs: warning (device loop9): udf_load_vrs: No anchor found UDF-fs: Scanning with blocksize 4096 failed UDF-fs: error (device loop7): udf_read_tagged: read failed, block=512, location=512 ksys_mount+0xcf/0x130 fs/namespace.c:3015 UDF-fs: warning (device loop9): udf_fill_super: No partition found (1) UDF-fs: warning (device loop11): udf_load_vrs: No anchor found 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 __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 4096 failed UDF-fs: error (device loop9): udf_read_tagged: read failed, block=512, location=512 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: warning (device loop9): udf_load_vrs: No anchor found do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe UDF-fs: Scanning with blocksize 512 failed UDF-fs: error (device loop7): udf_read_tagged: read failed, block=512, location=512 RIP: 0033:0x44aa99 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: warning (device loop7): udf_load_vrs: No anchor found Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48 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=512, location=512 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: warning (device loop11): 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: Scanning with blocksize 512 failed RSP: 002b:00007fc8bc2a8208 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 UDF-fs: error (device loop9): udf_read_tagged: read failed, block=256, location=256 RAX: ffffffffffffffda RBX: 00000000004cb4e8 RCX: 000000000044aa99 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 RDX: 0000000020000180 RSI: 0000000020000080 RDI: 0000000020000100 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 RBP: 00000000004cb4e0 R08: 0000000000000000 R09: 0000000000000000 UDF-fs: warning (device loop7): udf_fill_super: No partition found (1) UDF-fs: warning (device loop9): udf_load_vrs: No anchor found UDF-fs: warning (device loop11): udf_load_vrs: No anchor found R10: 0000000000000000 R11: 0000000000000246 R12: 00000000004cb4ec UDF-fs: error (device loop7): udf_read_tagged: read failed, block=256, location=256 UDF-fs: Scanning with blocksize 1024 failed R13: 00007ffc49dfd72f R14: 00007fc8bc2a8300 R15: 0000000000022000 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 Showing all locks held in the system: 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 UDF-fs: error (device loop11): udf_read_tagged: read failed, block=512, location=512 1 lock held by khungtaskd/1570: 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 #0: 0000000020c9c888 (rcu_read_lock){....}, at: debug_show_all_locks+0x53/0x265 kernel/locking/lockdep.c:4441 UDF-fs: warning (device loop11): udf_load_vrs: No anchor found 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 UDF-fs: Scanning with blocksize 4096 failed UDF-fs: error (device loop11): udf_read_tagged: read failed, block=256, location=256 3 locks held by systemd-udevd/4699: UDF-fs: warning (device loop7): udf_load_vrs: No anchor found UDF-fs: warning (device loop9): udf_fill_super: No partition found (1) #0: 0000000057b03c5f (&rq->lock){-.-.}, at: rq_lock kernel/sched/sched.h:1824 [inline] #0: 0000000057b03c5f (&rq->lock){-.-.}, at: __schedule+0x1f9/0x2040 kernel/sched/core.c:3455 UDF-fs: error (device loop11): udf_read_tagged: read failed, block=512, location=512 UDF-fs: Scanning with blocksize 1024 failed UDF-fs: error (device loop7): udf_read_tagged: read failed, block=256, location=256 #1: 0000000057b03c5f (&rq->lock){-.-.}, at: rq_lock kernel/sched/sched.h:1824 [inline] #1: 0000000057b03c5f (&rq->lock){-.-.}, at: __schedule+0x1f9/0x2040 kernel/sched/core.c:3455 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 #2: 0000000020c9c888 (rcu_read_lock){....}, at: trace_sched_stat_runtime include/trace/events/sched.h:428 [inline] #2: 0000000020c9c888 (rcu_read_lock){....}, at: update_curr+0x2c3/0x870 kernel/sched/fair.c:857 UDF-fs: warning (device loop7): udf_load_vrs: No anchor found 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=256, location=256 UDF-fs: Scanning with blocksize 2048 failed 1 lock held by in:imklog/7876: UDF-fs: error (device loop11): udf_read_tagged: read failed, block=256, location=256 #0: 000000005f592f21 (&f->f_pos_lock){+.+.}, at: __fdget_pos+0x26f/0x310 fs/file.c:767 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=512, location=512 1 lock held by syz-executor469/8124: UDF-fs: warning (device loop11): udf_load_vrs: No anchor found 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 2 locks held by syz-executor469/8166: UDF-fs: Scanning with blocksize 512 failed UDF-fs: Scanning with blocksize 512 failed #0: 0000000045a40816 (&bdev->bd_fsfreeze_mutex){+.+.}, at: mount_bdev+0x90/0x3b0 fs/super.c:1125 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: error (device loop9): udf_read_tagged: read failed, block=256, location=256 UDF-fs: Scanning with blocksize 4096 failed #1: 000000007b8f1774 (&type->s_umount_key#47){+.+.}, at: grab_super+0xa2/0x350 fs/super.c:383 UDF-fs: error (device loop11): udf_read_tagged: read failed, block=512, location=512 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: warning (device loop11): udf_load_vrs: No anchor found 1 lock held by syz-executor469/8125: 2 locks held by syz-executor469/8167: UDF-fs: warning (device loop9): udf_load_vrs: No anchor found UDF-fs: Scanning with blocksize 1024 failed #0: 0000000015b92e8b (&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: Scanning with blocksize 1024 failed #1: 000000005acc9b30 (&type->s_umount_key#47){+.+.}, at: grab_super+0xa2/0x350 fs/super.c:383 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 loop7): udf_read_tagged: read failed, block=512, location=512 1 lock held by syz-executor469/8190: 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 1 lock held by syz-executor469/14027: 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 512 failed 1 lock held by syz-executor469/14033: UDF-fs: warning (device loop11): udf_load_vrs: No anchor found UDF-fs: Scanning with blocksize 2048 failed 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 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=512, location=512 2 locks held by syz-executor469/14043: UDF-fs: error (device loop11): udf_read_tagged: read failed, block=512, location=512 #0: 00000000aa0ce207 (&bdev->bd_fsfreeze_mutex){+.+.}, at: mount_bdev+0x90/0x3b0 fs/super.c:1125 UDF-fs: warning (device loop7): 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 UDF-fs: warning (device loop11): udf_load_vrs: No anchor found #1: 00000000881d60ee (&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 loop9): udf_load_vrs: No anchor found UDF-fs: Scanning with blocksize 4096 failed UDF-fs: Scanning with blocksize 4096 failed 1 lock held by syz-executor469/14040: 2 locks held by syz-executor469/14049: UDF-fs: warning (device loop9): udf_fill_super: No partition found (1) UDF-fs: warning (device loop11): udf_fill_super: No partition found (1) 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 #0: 0000000031df68c8 (&bdev->bd_fsfreeze_mutex){+.+.}, at: mount_bdev+0x90/0x3b0 fs/super.c:1125 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: warning (device loop9): udf_load_vrs: No anchor found UDF-fs: error (device loop11): udf_read_tagged: read failed, block=256, location=256 #1: 000000000be6e804 (&type->s_umount_key#47){+.+.}, at: grab_super+0xa2/0x350 fs/super.c:383 UDF-fs: Scanning with blocksize 2048 failed 1 lock held by syz-executor469/14053: UDF-fs: Scanning with blocksize 512 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: 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: error (device loop9): udf_read_tagged: read failed, block=512, location=512 UDF-fs: Scanning with blocksize 512 failed NMI backtrace for cpu 0 UDF-fs: error (device loop7): udf_read_tagged: read failed, block=512, location=512 CPU: 0 PID: 1570 Comm: khungtaskd Not tainted 4.19.201-syzkaller #0 UDF-fs: warning (device loop7): udf_load_vrs: No anchor found 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/0x2ef lib/dump_stack.c:118 nmi_cpu_backtrace.cold+0x63/0xa2 lib/nmi_backtrace.c:101 nmi_trigger_cpumask_backtrace+0x1a6/0x1f0 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: NMI backtrace for cpu 1 CPU: 1 PID: 8124 Comm: syz-executor469 Not tainted 4.19.201-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:constant_test_bit arch/x86/include/asm/bitops.h:317 [inline] RIP: 0010:PageLocked include/linux/page-flags.h:272 [inline] RIP: 0010:unlock_page+0xf5/0x230 mm/filemap.c:1228 Code: a1 5c e6 ff 4c 8b 6d 08 31 ff 48 89 eb 4d 89 ec 41 83 e4 01 4c 89 e6 e8 19 5e e6 ff 4d 85 e4 0f 85 ce 00 00 00 e8 7b 5c e6 ff <48> 89 da 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 80 3c 02 00 0f RSP: 0018:ffff88809671f6e0 EFLAGS: 00000293 RAX: ffff8880affec440 RBX: ffffea00022cc7c0 RCX: ffffffff817c2607 RDX: 0000000000000000 RSI: ffffffff817c2615 RDI: 0000000000000007 RBP: ffffea00022cc7c0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000007 R11: 0000000000000000 R12: 0000000000000000 R13: ffffea00025e7088 R14: ffffea00022cc7c8 R15: ffffea00022cc7c0 FS: 00007fc8bc2ea700(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f138002e000 CR3: 00000000b429b000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: grow_dev_page fs/buffer.c:982 [inline] grow_buffers fs/buffer.c:1017 [inline] __getblk_slow+0x5d0/0x9e0 fs/buffer.c:1044 __getblk_gfp fs/buffer.c:1321 [inline] __bread_gfp+0x218/0x300 fs/buffer.c:1366 sb_bread include/linux/buffer_head.h:309 [inline] udf_tread+0xe8/0x130 fs/udf/misc.c:44 udf_read_tagged+0x4e/0x530 fs/udf/misc.c:210 udf_check_anchor_block+0x1b4/0x610 fs/udf/super.c:1820 udf_scan_anchors+0x3ba/0x5f0 fs/udf/super.c:1882 udf_find_anchor fs/udf/super.c:1917 [inline] udf_load_vrs+0x633/0xbf0 fs/udf/super.c:1982 udf_fill_super+0x7d2/0x1820 fs/udf/super.c:2177 mount_bdev+0x2fc/0x3b0 fs/super.c:1158 mount_fs+0xa3/0x310 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: 0033:0x44aa99 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fc8bc2ea208 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00000000004cb4c8 RCX: 000000000044aa99 RDX: 0000000020000180 RSI: 0000000020000080 RDI: 0000000020000100 RBP: 00000000004cb4c0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000004cb4cc R13: 00007ffc49dfd72f R14: 00007fc8bc2ea300 R15: 0000000000022000 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 UDF-fs: warning (device loop7): udf_fill_super: No partition found (1) 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 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 loop7): udf_load_vrs: No anchor found UDF-fs: warning (device loop9): udf_load_vrs: No anchor found