syzbot


INFO: task hung in __get_super

Status: upstream: reported C repro on 2019/04/18 15:16
Subsystems: vfs udf
[Documentation on labels]
Reported-by: syzbot+aa1e3076ccdf7c9e5330@syzkaller.appspotmail.com
First crash: 1889d, last: 470d
Fix bisection: failed (error log, bisect log)
  
Similar bugs (3)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
android-414 INFO: task hung in __get_super 1 2116d 2116d 0/1 auto-closed as invalid on 2019/03/02 05:51
upstream INFO: task hung in __get_super fs C 80 1826d 2270d 12/27 fixed on 2019/06/20 05:27
linux-4.14 INFO: task hung in __get_super C 183 479d 1893d 0/1 upstream: reported C repro on 2019/04/14 10:41
Fix bisection attempts (8)
Created Duration User Patch Repo Result
2021/11/06 15:54 12m bisect fix linux-4.19.y error job log (0)
2021/09/25 06:40 29m bisect fix linux-4.19.y job log (0) log
2021/07/15 11:14 28m bisect fix linux-4.19.y job log (0) log
2021/05/20 17:14 38m bisect fix linux-4.19.y job log (0) log
2021/02/24 13:17 34m bisect fix linux-4.19.y job log (0) log
2021/01/01 01:13 32m bisect fix linux-4.19.y job log (0) log
2020/11/23 09:24 33m bisect fix linux-4.19.y job log (0) log
2020/03/31 15:08 32m bisect fix linux-4.19.y job log (0) log

Sample crash report:
 loop5: unable to read partition table
print_req_error: I/O error, dev loop8, sector 256
UDF-fs: error (device loop8): udf_read_tagged: read failed, block=256, location=256
print_req_error: I/O error, dev loop0, sector 4096
print_req_error: I/O error, dev loop6, sector 1024
INFO: task syz-executor698:8350 blocked for more than 140 seconds.
UDF-fs: error (device loop6): udf_read_tagged: read failed, block=512, location=512
UDF-fs: error (device loop0): udf_read_tagged: read failed, block=512, location=512
print_req_error: I/O error, dev loop8, sector 512
UDF-fs: error (device loop8): udf_read_tagged: read failed, block=512, location=512
loop5: partition table beyond EOD, truncated
      Not tainted 4.19.211-syzkaller #0
UDF-fs: warning (device loop6): udf_load_vrs: No anchor found
loop_reread_partitions: partition scan of loop5 () failed (rc=-5)
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
UDF-fs: warning (device loop8): udf_load_vrs: No anchor found
UDF-fs: Scanning with blocksize 1024 failed
UDF-fs: warning (device loop0): udf_load_vrs: No anchor found
UDF-fs: Scanning with blocksize 512 failed
syz-executor698 D27560  8350   8124 0x00000004
UDF-fs: Scanning with blocksize 4096 failed
UDF-fs: error (device loop6): udf_read_tagged: read failed, block=256, location=256
Call Trace:
UDF-fs: error (device loop8): udf_read_tagged: read failed, block=256, location=256
UDF-fs: error (device loop6): udf_read_tagged: read failed, block=512, location=512
UDF-fs: error (device loop10): udf_read_tagged: read failed, block=256, location=256
 context_switch kernel/sched/core.c:2828 [inline]
 __schedule+0x887/0x2040 kernel/sched/core.c:3517
UDF-fs: warning (device loop0): udf_fill_super: No partition found (1)
UDF-fs: error (device loop8): udf_read_tagged: read failed, block=512, location=512
UDF-fs: warning (device loop6): udf_load_vrs: No anchor found
UDF-fs: error (device loop10): udf_read_tagged: read failed, block=512, location=512
UDF-fs: warning (device loop10): udf_load_vrs: No anchor found
UDF-fs: Scanning with blocksize 512 failed
UDF-fs: warning (device loop8): udf_load_vrs: No anchor found
UDF-fs: Scanning with blocksize 2048 failed
UDF-fs: Scanning with blocksize 1024 failed
 schedule+0x8d/0x1b0 kernel/sched/core.c:3561
 __rwsem_down_read_failed_common kernel/locking/rwsem-xadd.c:292 [inline]
 rwsem_down_read_failed+0x20a/0x390 kernel/locking/rwsem-xadd.c:309
 call_rwsem_down_read_failed+0x14/0x30 arch/x86/lib/rwsem.S:94
 __down_read arch/x86/include/asm/rwsem.h:83 [inline]
 down_read+0x44/0x80 kernel/locking/rwsem.c:26
UDF-fs: error (device loop8): udf_read_tagged: read failed, block=256, location=256
 __get_super.part.0+0x209/0x2e0 fs/super.c:698
UDF-fs: error (device loop6): udf_read_tagged: read failed, block=256, location=256
 __get_super include/linux/spinlock.h:329 [inline]
 get_super+0x2b/0x50 fs/super.c:727
UDF-fs: error (device loop10): udf_read_tagged: read failed, block=256, location=256
 fsync_bdev+0x14/0xc0 fs/block_dev.c:483
Dev loop0: unable to read RDB block 15
 invalidate_partition+0x74/0xb0 block/genhd.c:1592
 drop_partitions.isra.0+0x9c/0x190 block/partition-generic.c:454
 loop0: unable to read partition table
UDF-fs: error (device loop8): udf_read_tagged: read failed, block=512, location=512
UDF-fs: error (device loop6): udf_read_tagged: read failed, block=512, location=512
 rescan_partitions+0xab/0x970 block/partition-generic.c:527
UDF-fs: warning (device loop6): udf_load_vrs: No anchor found
loop0: partition table beyond EOD, truncated
UDF-fs: error (device loop10): udf_read_tagged: read failed, block=512, location=512
UDF-fs: warning (device loop10): udf_load_vrs: No anchor found
 __blkdev_reread_part+0x189/0x220 block/ioctl.c:173
UDF-fs: warning (device loop8): udf_load_vrs: No anchor found
loop_reread_partitions: partition scan of loop0 () failed (rc=-5)
UDF-fs: Scanning with blocksize 4096 failed
 blkdev_reread_part+0x23/0x40 block/ioctl.c:193
UDF-fs: Scanning with blocksize 2048 failed
 loop_reread_partitions drivers/block/loop.c:645 [inline]
 loop_set_status+0x103e/0x1800 drivers/block/loop.c:1330
UDF-fs: Scanning with blocksize 1024 failed
UDF-fs: warning (device loop6): udf_fill_super: No partition found (1)
 loop_set_status64+0xb2/0x110 drivers/block/loop.c:1450
UDF-fs: error (device loop10): udf_read_tagged: read failed, block=256, location=256
UDF-fs: error (device loop8): udf_read_tagged: read failed, block=256, location=256
 lo_ioctl+0x41f/0x20e0 drivers/block/loop.c:1593
 __blkdev_driver_ioctl block/ioctl.c:303 [inline]
 blkdev_ioctl+0x5cb/0x1a80 block/ioctl.c:601
UDF-fs: error (device loop10): udf_read_tagged: read failed, block=512, location=512
UDF-fs: error (device loop8): udf_read_tagged: read failed, block=512, location=512
UDF-fs: warning (device loop10): udf_load_vrs: No anchor found
UDF-fs: error (device loop0): udf_read_tagged: read failed, block=256, location=256
UDF-fs: Scanning with blocksize 2048 failed
Dev loop3: unable to read RDB block 15
UDF-fs: error (device loop10): udf_read_tagged: read failed, block=256, location=256
UDF-fs: warning (device loop8): udf_load_vrs: No anchor found
 loop3: unable to read partition table
loop3: partition table beyond EOD, truncated
UDF-fs: error (device loop0): udf_read_tagged: read failed, block=512, location=512
 block_ioctl+0xe9/0x130 fs/block_dev.c:1906
UDF-fs: error (device loop10): udf_read_tagged: read failed, block=512, location=512
loop_reread_partitions: partition scan of loop3 () failed (rc=-5)
 vfs_ioctl fs/ioctl.c:46 [inline]
 file_ioctl fs/ioctl.c:501 [inline]
 do_vfs_ioctl+0xcdb/0x12e0 fs/ioctl.c:688
UDF-fs: Scanning with blocksize 4096 failed
UDF-fs: warning (device loop8): udf_fill_super: No partition found (1)
UDF-fs: warning (device loop0): udf_load_vrs: No anchor found
UDF-fs: Scanning with blocksize 512 failed
UDF-fs: error (device loop0): udf_read_tagged: read failed, block=256, location=256
UDF-fs: warning (device loop10): udf_load_vrs: No anchor found
UDF-fs: Scanning with blocksize 4096 failed
UDF-fs: warning (device loop10): udf_fill_super: No partition found (1)
UDF-fs: error (device loop0): udf_read_tagged: read failed, block=512, location=512
UDF-fs: warning (device loop0): udf_load_vrs: No anchor found
UDF-fs: Scanning with blocksize 1024 failed
UDF-fs: error (device loop6): udf_read_tagged: read failed, block=256, location=256
 ksys_ioctl+0x9b/0xc0 fs/ioctl.c:705
Dev loop4: unable to read RDB block 15
UDF-fs: error (device loop6): udf_read_tagged: read failed, block=512, location=512
 loop4: unable to read partition table
 __do_sys_ioctl fs/ioctl.c:712 [inline]
 __se_sys_ioctl fs/ioctl.c:710 [inline]
 __x64_sys_ioctl+0x6f/0xb0 fs/ioctl.c:710
UDF-fs: warning (device loop6): udf_load_vrs: No anchor found
 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293
UDF-fs: error (device loop0): udf_read_tagged: read failed, block=256, location=256
loop4: partition table beyond EOD, truncated
UDF-fs: error (device loop0): udf_read_tagged: read failed, block=512, location=512
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
Dev loop5: unable to read RDB block 15
 loop5: unable to read partition table
loop_reread_partitions: partition scan of loop4 () failed (rc=-5)
loop5: partition table beyond EOD, truncated
UDF-fs: Scanning with blocksize 512 failed
RIP: 0033:0x7f21d9a9c737
loop_reread_partitions: partition scan of loop5 () failed (rc=-5)
UDF-fs: warning (device loop0): udf_load_vrs: No anchor found
Code: 3c 1c 48 f7 d8 49 39 c4 72 b8 e8 c4 4c 02 00 85 c0 78 bd 48 83 c4 08 4c 89 e0 5b 41 5c c3 0f 1f 44 00 00 b8 10 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48
UDF-fs: error (device loop6): udf_read_tagged: read failed, block=256, location=256
UDF-fs: error (device loop6): udf_read_tagged: read failed, block=512, location=512
UDF-fs: Scanning with blocksize 2048 failed
UDF-fs: warning (device loop6): udf_load_vrs: No anchor found
UDF-fs: Scanning with blocksize 1024 failed
RSP: 002b:00007fff32ef8738 EFLAGS: 00000202 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007fff32ef8760 RCX: 00007f21d9a9c737
RDX: 00007fff32ef8870 RSI: 0000000000004c04 RDI: 0000000000000004
RBP: 0000000000000004 R08: 00007fff32ef85d0 R09: 00007ffffbad8001
R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000003
R13: 00005555558632c0 R14: 00007fff32ef8870 R15: 0000000000000004
UDF-fs: error (device loop6): udf_read_tagged: read failed, block=256, location=256
UDF-fs: error (device loop0): udf_read_tagged: read failed, block=256, location=256
UDF-fs: error (device loop8): udf_read_tagged: read failed, block=256, location=256
INFO: task systemd-udevd:8359 blocked for more than 140 seconds.
UDF-fs: error (device loop10): udf_read_tagged: read failed, block=256, location=256
UDF-fs: error (device loop0): udf_read_tagged: read failed, block=512, location=512
UDF-fs: error (device loop6): udf_read_tagged: read failed, block=512, location=512
UDF-fs: error (device loop10): udf_read_tagged: read failed, block=512, location=512
      Not tainted 4.19.211-syzkaller #0
UDF-fs: error (device loop8): udf_read_tagged: read failed, block=512, location=512
UDF-fs: warning (device loop6): udf_load_vrs: No anchor found
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
UDF-fs: warning (device loop8): udf_load_vrs: No anchor found
UDF-fs: warning (device loop0): udf_load_vrs: No anchor found
UDF-fs: warning (device loop10): udf_load_vrs: No anchor found
systemd-udevd   D28000  8359   4696 0x00000104
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 loop6): udf_read_tagged: read failed, block=256, location=256
UDF-fs: error (device loop8): udf_read_tagged: read failed, block=256, location=256
Call Trace:
UDF-fs: warning (device loop0): udf_fill_super: No partition found (1)
UDF-fs: Scanning with blocksize 512 failed
UDF-fs: error (device loop6): 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: warning (device loop6): udf_load_vrs: No anchor found
UDF-fs: error (device loop10): udf_read_tagged: read failed, block=256, location=256
UDF-fs: error (device loop8): udf_read_tagged: read failed, block=512, location=512
UDF-fs: Scanning with blocksize 4096 failed
UDF-fs: warning (device loop6): udf_fill_super: No partition found (1)
UDF-fs: warning (device loop8): udf_load_vrs: No anchor found
UDF-fs: error (device loop10): udf_read_tagged: read failed, block=512, location=512
 schedule+0x8d/0x1b0 kernel/sched/core.c:3561
UDF-fs: Scanning with blocksize 1024 failed
Dev loop0: unable to read RDB block 15
 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:3619
 loop0: unable to read partition table
 __mutex_lock_common kernel/locking/mutex.c:1016 [inline]
 __mutex_lock+0x5f0/0x1190 kernel/locking/mutex.c:1078
UDF-fs: warning (device loop10): udf_load_vrs: No anchor found
UDF-fs: Scanning with blocksize 1024 failed
loop0: partition table beyond EOD, truncated
loop_reread_partitions: partition scan of loop0 () failed (rc=-5)
UDF-fs: error (device loop10): udf_read_tagged: read failed, block=256, location=256
UDF-fs: error (device loop8): udf_read_tagged: read failed, block=256, location=256
UDF-fs: error (device loop10): udf_read_tagged: read failed, block=512, location=512
UDF-fs: warning (device loop10): udf_load_vrs: No anchor found
UDF-fs: error (device loop8): udf_read_tagged: read failed, block=512, location=512
UDF-fs: Scanning with blocksize 2048 failed
Dev loop3: unable to read RDB block 15
UDF-fs: warning (device loop8): udf_load_vrs: No anchor found
 loop3: unable to read partition table
UDF-fs: error (device loop10): udf_read_tagged: read failed, block=256, location=256
UDF-fs: Scanning with blocksize 2048 failed
loop3: partition table beyond EOD, truncated
 blkdev_put+0x30/0x520 fs/block_dev.c:1839
UDF-fs: error (device loop10): udf_read_tagged: read failed, block=512, location=512
UDF-fs: error (device loop0): udf_read_tagged: read failed, block=256, location=256
loop_reread_partitions: partition scan of loop3 () failed (rc=-5)
 blkdev_close+0x86/0xb0 fs/block_dev.c:1888
UDF-fs: error (device loop8): udf_read_tagged: read failed, block=256, location=256
UDF-fs: warning (device loop10): udf_load_vrs: No anchor found
UDF-fs: error (device loop0): udf_read_tagged: read failed, block=512, location=512
UDF-fs: Scanning with blocksize 4096 failed
 __fput+0x2ce/0x890 fs/file_table.c:278
UDF-fs: error (device loop8): udf_read_tagged: read failed, block=512, location=512
UDF-fs: warning (device loop10): udf_fill_super: No partition found (1)
 task_work_run+0x148/0x1c0 kernel/task_work.c:113
UDF-fs: warning (device loop8): udf_load_vrs: No anchor found
 tracehook_notify_resume include/linux/tracehook.h:193 [inline]
 exit_to_usermode_loop+0x251/0x2a0 arch/x86/entry/common.c:167
UDF-fs: warning (device loop0): udf_load_vrs: No anchor found
 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
UDF-fs: Scanning with blocksize 4096 failed
UDF-fs: Scanning with blocksize 512 failed
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
UDF-fs: warning (device loop8): udf_fill_super: No partition found (1)
RIP: 0033:0x7f6e4d656270
Code: Bad RIP value.
RSP: 002b:00007ffe43d8ef58 EFLAGS: 00000246 ORIG_RAX: 0000000000000003
RAX: 0000000000000000 RBX: 000000000000000f RCX: 00007f6e4d656270
UDF-fs: error (device loop0): udf_read_tagged: read failed, block=256, location=256
RDX: 00007f6e4d640b58 RSI: 0000000000000000 RDI: 000000000000000f
Dev loop5: unable to read RDB block 15
UDF-fs: error (device loop0): udf_read_tagged: read failed, block=512, location=512
RBP: 00007f6e4e510710 R08: 0000557d992917f0 R09: 000000000000000d
 loop5: unable to read partition table
UDF-fs: warning (device loop0): udf_load_vrs: No anchor found
loop5: partition table beyond EOD, truncated
R10: 0000000000000116 R11: 0000000000000246 R12: 0000000000000002
loop_reread_partitions: partition scan of loop5 () failed (rc=-5)
R13: 0000000000000000 R14: 0000557d99288880 R15: 000000000000000f
Dev loop4: unable to read RDB block 15
UDF-fs: error (device loop6): udf_read_tagged: read failed, block=256, location=256
 loop4: unable to read partition table
UDF-fs: error (device loop6): udf_read_tagged: read failed, block=512, location=512
UDF-fs: Scanning with blocksize 1024 failed
loop4: partition table beyond EOD, truncated

Showing all locks held in the system:
loop_reread_partitions: partition scan of loop4 () failed (rc=-5)
UDF-fs: warning (device loop6): udf_load_vrs: No anchor found
no locks held by ksoftirqd/0/9.
1 lock held by khungtaskd/1570:
UDF-fs: error (device loop0): udf_read_tagged: read failed, block=256, location=256
 #0: 000000007a9299af (rcu_read_lock){....}, at: debug_show_all_locks+0x53/0x265 kernel/locking/lockdep.c:4441
UDF-fs: Scanning with blocksize 512 failed
UDF-fs: error (device loop0): udf_read_tagged: read failed, block=512, location=512
1 lock held by in:imklog/7811:
 #0: 0000000036c8bd25 (&f->f_pos_lock){+.+.}, at: __fdget_pos+0x26f/0x310 fs/file.c:767
UDF-fs: warning (device loop0): udf_load_vrs: No anchor found
2 locks held by syz-executor698/8350:
UDF-fs: error (device loop6): udf_read_tagged: read failed, block=256, location=256
UDF-fs: Scanning with blocksize 2048 failed
 #0: 00000000e4e17419 (&bdev->bd_mutex){+.+.}, at: blkdev_reread_part+0x1b/0x40 block/ioctl.c:192
UDF-fs: error (device loop10): udf_read_tagged: read failed, block=256, location=256
UDF-fs: error (device loop6): udf_read_tagged: read failed, block=512, location=512
UDF-fs: error (device loop8): udf_read_tagged: read failed, block=256, location=256
UDF-fs: error (device loop0): udf_read_tagged: read failed, block=256, location=256
UDF-fs: warning (device loop6): udf_load_vrs: No anchor found
 #1: 00000000415e078a (&type->s_umount_key#47){.+.+}, at: __get_super.part.0+0x209/0x2e0 fs/super.c:698
1 lock held by syz-executor698/8354:
UDF-fs: error (device loop10): udf_read_tagged: read failed, block=512, location=512
UDF-fs: error (device loop0): udf_read_tagged: read failed, block=512, location=512
1 lock held by systemd-udevd/8359:
UDF-fs: error (device loop8): udf_read_tagged: read failed, block=512, location=512
UDF-fs: warning (device loop10): udf_load_vrs: No anchor found
UDF-fs: Scanning with blocksize 1024 failed
 #0: 00000000e4e17419 (&bdev->bd_mutex){+.+.}, at: blkdev_put+0x30/0x520 fs/block_dev.c:1839
UDF-fs: warning (device loop8): udf_load_vrs: No anchor found
UDF-fs: Scanning with blocksize 512 failed
UDF-fs: error (device loop6): udf_read_tagged: read failed, block=256, location=256
UDF-fs: warning (device loop0): udf_load_vrs: No anchor found
4 locks held by syz-executor698/15104:
UDF-fs: error (device loop6): udf_read_tagged: read failed, block=512, location=512
UDF-fs: Scanning with blocksize 512 failed
UDF-fs: error (device loop8): udf_read_tagged: read failed, block=256, location=256
UDF-fs: error (device loop10): udf_read_tagged: read failed, block=256, location=256
1 lock held by syz-executor698/15108:
UDF-fs: Scanning with blocksize 4096 failed
UDF-fs: warning (device loop6): udf_load_vrs: No anchor found
UDF-fs: warning (device loop0): udf_fill_super: No partition found (1)
UDF-fs: error (device loop8): udf_read_tagged: read failed, block=512, location=512
UDF-fs: Scanning with blocksize 2048 failed
1 lock held by syz-executor698/15115:
UDF-fs: error (device loop10): udf_read_tagged: read failed, block=512, location=512
UDF-fs: warning (device loop8): udf_load_vrs: No anchor found
UDF-fs: warning (device loop10): udf_load_vrs: No anchor found
1 lock held by syz-executor698/15116:

UDF-fs: Scanning with blocksize 1024 failed
=============================================

UDF-fs: Scanning with blocksize 1024 failed
UDF-fs: error (device loop6): udf_read_tagged: read failed, block=256, location=256
Dev loop0: unable to read RDB block 15
UDF-fs: error (device loop6): udf_read_tagged: read failed, block=512, location=512
UDF-fs: error (device loop10): udf_read_tagged: read failed, block=256, location=256
UDF-fs: error (device loop8): udf_read_tagged: read failed, block=256, location=256
 loop0: unable to read partition table
NMI backtrace for cpu 1
CPU: 1 PID: 1570 Comm: khungtaskd Not tainted 4.19.211-syzkaller #0
loop0: partition table beyond EOD, truncated
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022
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 1 to CPUs 0:
UDF-fs: error (device loop10): udf_read_tagged: read failed, block=512, location=512
NMI backtrace for cpu 0
CPU: 0 PID: 15115 Comm: syz-executor698 Not tainted 4.19.211-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022
RIP: 0010:io_serial_in+0x60/0x80 drivers/tty/serial/8250/8250_port.c:455
Code: 0f b6 8d e1 00 00 00 48 8d 7d 38 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 d3 e3 80 3c 02 00 75 13 03 5d 38 89 da ec <5b> 0f b6 c0 5d c3 e8 c5 80 d7 fd eb c9 e8 0e 83 d7 fd eb e6 66 66
RSP: 0018:ffff888093627410 EFLAGS: 00000006
RAX: dffffc0000000005 RBX: 00000000000003f9 RCX: 0000000000000000
RDX: 00000000000003f9 RSI: ffffffff83c0deec RDI: ffffffff8dc90258
RBP: ffffffff8dc90220 R08: 0000000000000001 R09: fffffbfff1b92044
R10: ffffffff8dc90223 R11: 0000000000000000 R12: 0000000000000001
R13: ffffffff8dc90448 R14: 0000000000000000 R15: ffffffff8dc90268
FS:  0000555555863300(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fd7c4025000 CR3: 0000000092ca1000 CR4: 00000000003406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 serial_port_in include/linux/serial_core.h:269 [inline]
 serial8250_console_write+0x292/0xb70 drivers/tty/serial/8250/8250_port.c:3295
 call_console_drivers kernel/printk/printk.c:1764 [inline]
 console_unlock+0xbb6/0x1110 kernel/printk/printk.c:2460
 vprintk_emit+0x2d1/0x740 kernel/printk/printk.c:1965
 vprintk_func+0x79/0x180 kernel/printk/printk_safe.c:405
 printk+0xba/0xed kernel/printk/printk.c:2040
 _udf_err+0xdc/0x110 fs/udf/super.c:2330
 udf_read_tagged+0x49a/0x530 fs/udf/misc.c:221
 udf_check_anchor_block+0x1b4/0x610 fs/udf/super.c:1827
 udf_scan_anchors+0x488/0x5f0 fs/udf/super.c:1906
 udf_find_anchor fs/udf/super.c:1924 [inline]
 udf_load_vrs+0x633/0xbf0 fs/udf/super.c:1989
 udf_fill_super+0x7d1/0x17a0 fs/udf/super.c:2184
 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:2492 [inline]
 do_mount+0x115c/0x2f50 fs/namespace.c:2822
 ksys_mount+0xcf/0x130 fs/namespace.c:3038
 __do_sys_mount fs/namespace.c:3052 [inline]
 __se_sys_mount fs/namespace.c:3049 [inline]
 __x64_sys_mount+0xba/0x150 fs/namespace.c:3049
 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x7f21d9a9c8a9
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 c0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fff32ef8998 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 0030656c69662f2e RCX: 00007f21d9a9c8a9
RDX: 0000000020000040 RSI: 0000000020000280 RDI: 0000000020000000
RBP: 0000000000000000 R08: 0000000000000000 R09: 00007fff32ef89c0
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fff32ef89bc
R13: 00007fff32ef89f0 R14: 00007fff32ef89d0 R15: 000000000000015b
UDF-fs: error (device loop8): udf_read_tagged: read failed, block=512, location=512
loop_reread_partitions: partition scan of loop0 () failed (rc=-5)
UDF-fs: warning (device loop6): udf_load_vrs: No anchor found
UDF-fs: warning (device loop10): udf_load_vrs: No anchor found
UDF-fs: warning (device loop8): udf_load_vrs: No anchor found
UDF-fs: Scanning with blocksize 2048 failed

Crashes (171):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2022/10/09 00:56 linux-4.19.y 3f8a27f9e27b aea5da89 .config console log report syz C [disk image] [vmlinux] ci2-linux-4-19 INFO: task hung in __get_super
2021/08/26 06:40 linux-4.19.y 59456c9cc40c b599f2fc .config console log report syz C ci2-linux-4-19 INFO: task hung in __get_super
2021/08/09 15:25 linux-4.19.y 5c66974a6304 6972b106 .config console log report syz C ci2-linux-4-19 INFO: task hung in __get_super
2021/04/02 13:15 linux-4.19.y 2034d6f0838e 6a81331a .config console log report syz C ci2-linux-4-19 INFO: task hung in __get_super
2019/11/23 20:44 linux-4.19.y c63ee2939dc1 598ca6c8 .config console log report syz C ci2-linux-4-19
2019/11/10 08:00 linux-4.19.y 5ee93551c703 dc438b91 .config console log report syz C ci2-linux-4-19
2023/03/07 01:28 linux-4.19.y 3f8a27f9e27b f8902b57 .config console log report info [disk image] [vmlinux] ci2-linux-4-19 INFO: task hung in __get_super
2023/03/03 10:48 linux-4.19.y 3f8a27f9e27b f8902b57 .config console log report info [disk image] [vmlinux] ci2-linux-4-19 INFO: task hung in __get_super
2023/03/01 23:19 linux-4.19.y 3f8a27f9e27b f8902b57 .config console log report info [disk image] [vmlinux] ci2-linux-4-19 INFO: task hung in __get_super
2023/02/25 10:32 linux-4.19.y 3f8a27f9e27b ee50e71c .config console log report info [disk image] [vmlinux] ci2-linux-4-19 INFO: task hung in __get_super
2023/02/21 19:28 linux-4.19.y 3f8a27f9e27b 42a4d508 .config console log report info [disk image] [vmlinux] ci2-linux-4-19 INFO: task hung in __get_super
2023/02/16 13:11 linux-4.19.y 3f8a27f9e27b 38b317a7 .config console log report info [disk image] [vmlinux] ci2-linux-4-19 INFO: task hung in __get_super
2023/02/04 15:30 linux-4.19.y 3f8a27f9e27b be607b78 .config console log report info [disk image] [vmlinux] ci2-linux-4-19 INFO: task hung in __get_super
2023/01/05 19:18 linux-4.19.y 3f8a27f9e27b 1dac8c7a .config console log report info [disk image] [vmlinux] ci2-linux-4-19 INFO: task hung in __get_super
2022/12/31 07:49 linux-4.19.y 3f8a27f9e27b ab32d508 .config console log report info [disk image] [vmlinux] ci2-linux-4-19 INFO: task hung in __get_super
2022/12/05 15:58 linux-4.19.y 3f8a27f9e27b 045cbb84 .config console log report info [disk image] [vmlinux] ci2-linux-4-19 INFO: task hung in __get_super
2022/11/25 20:26 linux-4.19.y 3f8a27f9e27b f4470a7b .config console log report info [disk image] [vmlinux] ci2-linux-4-19 INFO: task hung in __get_super
2022/11/21 03:49 linux-4.19.y 3f8a27f9e27b 5bb70014 .config console log report info [disk image] [vmlinux] ci2-linux-4-19 INFO: task hung in __get_super
2022/11/17 01:53 linux-4.19.y 3f8a27f9e27b 3a127a31 .config console log report info [disk image] [vmlinux] ci2-linux-4-19 INFO: task hung in __get_super
2022/11/14 10:53 linux-4.19.y 3f8a27f9e27b 943f4cb8 .config console log report info [disk image] [vmlinux] ci2-linux-4-19 INFO: task hung in __get_super
2022/11/13 17:55 linux-4.19.y 3f8a27f9e27b 7ba4d859 .config console log report info [disk image] [vmlinux] ci2-linux-4-19 INFO: task hung in __get_super
2022/11/12 20:23 linux-4.19.y 3f8a27f9e27b f42ee5d8 .config console log report info [disk image] [vmlinux] ci2-linux-4-19 INFO: task hung in __get_super
2022/11/02 07:34 linux-4.19.y 3f8a27f9e27b 08977f5d .config console log report info [disk image] [vmlinux] ci2-linux-4-19 INFO: task hung in __get_super
2022/10/16 16:29 linux-4.19.y 3f8a27f9e27b 67cb024c .config console log report info [disk image] [vmlinux] ci2-linux-4-19 INFO: task hung in __get_super
2022/10/16 02:45 linux-4.19.y 3f8a27f9e27b 67cb024c .config console log report info [disk image] [vmlinux] ci2-linux-4-19 INFO: task hung in __get_super
2022/10/04 06:19 linux-4.19.y 3f8a27f9e27b feb56351 .config console log report info [disk image] [vmlinux] ci2-linux-4-19 INFO: task hung in __get_super
2022/09/29 14:24 linux-4.19.y 3f8a27f9e27b 45fd7169 .config console log report info ci2-linux-4-19 INFO: task hung in __get_super
2022/09/27 20:39 linux-4.19.y 3f8a27f9e27b 10323ddf .config console log report info [disk image] [vmlinux] ci2-linux-4-19 INFO: task hung in __get_super
2022/09/25 10:10 linux-4.19.y 3f8a27f9e27b 0042f2b4 .config console log report info ci2-linux-4-19 INFO: task hung in __get_super
2022/09/20 04:52 linux-4.19.y 3f8a27f9e27b dd9a85ff .config console log report info [disk image] [vmlinux] ci2-linux-4-19 INFO: task hung in __get_super
2022/09/17 22:27 linux-4.19.y 3f8a27f9e27b dd9a85ff .config console log report info [disk image] [vmlinux] ci2-linux-4-19 INFO: task hung in __get_super
2022/09/17 12:52 linux-4.19.y 3f8a27f9e27b dd9a85ff .config console log report info [disk image] [vmlinux] ci2-linux-4-19 INFO: task hung in __get_super
2022/09/16 21:00 linux-4.19.y 3f8a27f9e27b dd9a85ff .config console log report info [disk image] [vmlinux] ci2-linux-4-19 INFO: task hung in __get_super
2022/09/14 11:59 linux-4.19.y 3f8a27f9e27b b884348d .config console log report info ci2-linux-4-19 INFO: task hung in __get_super
2022/09/12 03:15 linux-4.19.y 3f8a27f9e27b 356d8217 .config console log report info ci2-linux-4-19 INFO: task hung in __get_super
2022/09/11 20:34 linux-4.19.y 3f8a27f9e27b 356d8217 .config console log report info ci2-linux-4-19 INFO: task hung in __get_super
2022/09/02 03:01 linux-4.19.y 3f8a27f9e27b a805568e .config console log report info [disk image] [vmlinux] ci2-linux-4-19 INFO: task hung in __get_super
2022/08/28 18:25 linux-4.19.y 3f8a27f9e27b 07177916 .config console log report info ci2-linux-4-19 INFO: task hung in __get_super
2022/08/27 02:17 linux-4.19.y 3f8a27f9e27b 07177916 .config console log report info ci2-linux-4-19 INFO: task hung in __get_super
2022/08/23 04:29 linux-4.19.y 3f8a27f9e27b 26a13b38 .config console log report info ci2-linux-4-19 INFO: task hung in __get_super
2022/08/22 06:09 linux-4.19.y 3f8a27f9e27b 26a13b38 .config console log report info ci2-linux-4-19 INFO: task hung in __get_super
2022/08/17 02:11 linux-4.19.y 3f8a27f9e27b 9e4b39c2 .config console log report info ci2-linux-4-19 INFO: task hung in __get_super
2022/08/14 13:13 linux-4.19.y 3f8a27f9e27b 8dfcaa3d .config console log report info ci2-linux-4-19 INFO: task hung in __get_super
2022/08/13 17:42 linux-4.19.y 3f8a27f9e27b 8dfcaa3d .config console log report info ci2-linux-4-19 INFO: task hung in __get_super
2022/08/11 09:46 linux-4.19.y 3f8a27f9e27b 787ed7e0 .config console log report info ci2-linux-4-19 INFO: task hung in __get_super
2022/08/11 06:34 linux-4.19.y 3f8a27f9e27b a6201f11 .config console log report info ci2-linux-4-19 INFO: task hung in __get_super
2022/08/07 13:12 linux-4.19.y 3f8a27f9e27b 88e3a122 .config console log report info ci2-linux-4-19 INFO: task hung in __get_super
2022/08/03 03:02 linux-4.19.y 3f8a27f9e27b 1c9013ac .config console log report info ci2-linux-4-19 INFO: task hung in __get_super
2021/01/09 14:10 linux-4.19.y 610bdbf6a174 a6c52263 .config console log report info ci2-linux-4-19
2019/04/18 14:15 linux-4.19.y 4b0e041c9dad b0e8efcb .config console log report ci2-linux-4-19
* Struck through repros no longer work on HEAD.