device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000028, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 INFO: task syz-executor0:8494 blocked for more than 140 seconds. b_state=0x00000028, b_size=4096 Not tainted 4.20.0-rc1+ #107 device loop0 blocksize: 2048 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor0 D23384 8494 5660 0x00000004 __find_get_block_slow() failed. block=1, b_blocknr=0 Call Trace: b_state=0x00000028, b_size=4096 context_switch kernel/sched/core.c:2831 [inline] __schedule+0x8cf/0x21d0 kernel/sched/core.c:3472 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000028, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000028, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000028, b_size=4096 schedule+0xfe/0x460 kernel/sched/core.c:3516 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000028, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000028, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000028, b_size=4096 device loop0 blocksize: 2048 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3574 __find_get_block_slow() failed. block=1, b_blocknr=0 __mutex_lock_common kernel/locking/mutex.c:1002 [inline] __mutex_lock+0xaff/0x16f0 kernel/locking/mutex.c:1072 b_state=0x00000028, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000028, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000028, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000028, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000028, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000028, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000028, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000028, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000028, b_size=4096 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1087 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 blkdev_put+0x34/0x540 fs/block_dev.c:1816 b_state=0x00000028, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 blkdev_close+0x8b/0xb0 fs/block_dev.c:1865 b_state=0x00000028, b_size=4096 device loop0 blocksize: 2048 __fput+0x385/0xa30 fs/file_table.c:278 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000028, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000028, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000028, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000028, b_size=4096 device loop0 blocksize: 2048 ____fput+0x15/0x20 fs/file_table.c:309 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000028, b_size=4096 device loop0 blocksize: 2048 task_work_run+0x1e8/0x2a0 kernel/task_work.c:113 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000028, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000028, b_size=4096 tracehook_notify_resume include/linux/tracehook.h:188 [inline] exit_to_usermode_loop+0x318/0x380 arch/x86/entry/common.c:166 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000028, b_size=4096 prepare_exit_to_usermode arch/x86/entry/common.c:197 [inline] syscall_return_slowpath arch/x86/entry/common.c:268 [inline] do_syscall_64+0x6be/0x820 arch/x86/entry/common.c:293 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000028, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000028, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 entry_SYSCALL_64_after_hwframe+0x49/0xbe b_state=0x00000028, b_size=4096 RIP: 0033:0x411021 Code: 4c 89 f6 48 89 c7 48 89 ca 48 89 4c 24 10 4c 89 54 24 08 e8 b1 a3 ff ff 48 8b 4c 24 10 41 c6 04 0f 00 4c 8b 7c 24 28 4c 8b 54 <24> 08 45 0f b6 37 e9 db fc ff ff 0f 1f 40 00 41 80 f8 29 74 7f ba device loop0 blocksize: 2048 RSP: 002b:00007ffffb63c6e0 EFLAGS: 00000293 ORIG_RAX: 0000000000000003 __find_get_block_slow() failed. block=1, b_blocknr=0 RAX: 0000000000000000 RBX: 0000000000000005 RCX: 0000000000411021 b_state=0x00000028, b_size=4096 RDX: 0000000000000000 RSI: 0000000000730220 RDI: 0000000000000004 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 00007ffffb63c610 R11: 0000000000000293 R12: 0000000000000000 R13: 0000000000000001 R14: 000000000000002b R15: 0000000000000000 device loop0 blocksize: 2048 INFO: task syz-executor0:8541 blocked for more than 140 seconds. __find_get_block_slow() failed. block=1, b_blocknr=0 Not tainted 4.20.0-rc1+ #107 b_state=0x00000028, b_size=4096 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor0 D23536 8541 5660 0x00000004 device loop0 blocksize: 2048 Call Trace: __find_get_block_slow() failed. block=1, b_blocknr=0 context_switch kernel/sched/core.c:2831 [inline] __schedule+0x8cf/0x21d0 kernel/sched/core.c:3472 b_state=0x00000028, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000028, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000028, b_size=4096 schedule+0xfe/0x460 kernel/sched/core.c:3516 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000028, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000028, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000028, b_size=4096 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3574 device loop0 blocksize: 2048 __mutex_lock_common kernel/locking/mutex.c:1002 [inline] __mutex_lock+0xaff/0x16f0 kernel/locking/mutex.c:1072 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000028, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000028, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000028, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000028, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000028, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000028, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000028, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000028, b_size=4096 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1087 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000028, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 __blkdev_get+0x19b/0x13c0 fs/block_dev.c:1466 b_state=0x00000028, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 blkdev_get+0xc1/0xb50 fs/block_dev.c:1617 b_state=0x00000028, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000028, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000028, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000028, b_size=4096 blkdev_open+0x1fb/0x280 fs/block_dev.c:1775 device loop0 blocksize: 2048 do_dentry_open+0x499/0x1250 fs/open.c:771 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000028, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000028, b_size=4096 vfs_open+0xa0/0xd0 fs/open.c:880 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 do_last fs/namei.c:3418 [inline] path_openat+0x12bc/0x5150 fs/namei.c:3534 b_state=0x00000028, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000028, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000028, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000028, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000028, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000028, b_size=4096 do_filp_open+0x255/0x380 fs/namei.c:3564 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000028, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 do_sys_open+0x568/0x700 fs/open.c:1063 b_state=0x00000028, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000028, b_size=4096 device loop0 blocksize: 2048 __do_sys_open fs/open.c:1081 [inline] __se_sys_open fs/open.c:1076 [inline] __x64_sys_open+0x7e/0xc0 fs/open.c:1076 __find_get_block_slow() failed. block=1, b_blocknr=0 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290 b_state=0x00000028, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000028, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000028, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000028, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 entry_SYSCALL_64_after_hwframe+0x49/0xbe b_state=0x00000028, b_size=4096 RIP: 0033:0x4111a1 device loop0 blocksize: 2048 Code: 74 3b 44 89 f1 ba 00 33 44 00 44 89 f6 31 ff 31 c0 ff 15 aa 82 24 00 e9 90 fc ff ff c6 02 00 4c 8b 7c 24 28 49 89 ca 49 83 c7 <01> 4c 89 7c 24 28 e9 44 fb ff ff 4d 89 d7 e9 3c fb ff ff b9 40 95 __find_get_block_slow() failed. block=1, b_blocknr=0 RSP: 002b:00007f0912413a80 EFLAGS: 00000293 ORIG_RAX: 0000000000000002 b_state=0x00000028, b_size=4096 RAX: ffffffffffffffda RBX: 0000000020000168 RCX: 00000000004111a1 RDX: 00007f0912413afa RSI: 0000000000000002 RDI: 00007f0912413af0 device loop0 blocksize: 2048 RBP: 0000000000000001 R08: 0000000000000000 R09: 000000000000000a __find_get_block_slow() failed. block=1, b_blocknr=0 R10: 0000000000000075 R11: 0000000000000293 R12: 0000000000000005 b_state=0x00000028, b_size=4096 R13: 0000000000000001 R14: 00000000004d82a8 R15: 00000000ffffffff INFO: task syz-executor2:8499 blocked for more than 140 seconds. device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 Not tainted 4.20.0-rc1+ #107 b_state=0x00000028, b_size=4096 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor2 D24032 8499 5690 0x00000004 device loop0 blocksize: 2048 Call Trace: context_switch kernel/sched/core.c:2831 [inline] __schedule+0x8cf/0x21d0 kernel/sched/core.c:3472 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000028, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000028, b_size=4096 device loop0 blocksize: 2048 schedule+0xfe/0x460 kernel/sched/core.c:3516 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000028, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000028, b_size=4096 __rwsem_down_read_failed_common kernel/locking/rwsem-xadd.c:280 [inline] rwsem_down_read_failed+0x371/0x710 kernel/locking/rwsem-xadd.c:297 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000028, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000028, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000028, b_size=4096 call_rwsem_down_read_failed+0x18/0x30 arch/x86/lib/rwsem.S:94 device loop0 blocksize: 2048 __down_read arch/x86/include/asm/rwsem.h:83 [inline] down_read+0x9b/0x120 kernel/locking/rwsem.c:26 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000028, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000028, b_size=4096 __get_super.part.11+0x207/0x2e0 fs/super.c:698 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 __get_super include/linux/spinlock.h:329 [inline] get_super+0x2d/0x50 fs/super.c:727 b_state=0x00000028, b_size=4096 fsync_bdev+0x17/0xc0 fs/block_dev.c:469 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 invalidate_partition+0x35/0x60 block/genhd.c:1570 b_state=0x00000028, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 drop_partitions.isra.14+0xe1/0x200 block/partition-generic.c:445 b_state=0x00000028, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000028, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000028, b_size=4096 rescan_partitions+0x72/0x8e0 block/partition-generic.c:518 device loop0 blocksize: 2048 __blkdev_reread_part+0x1ad/0x230 block/ioctl.c:173 __find_get_block_slow() failed. block=1, b_blocknr=0 blkdev_reread_part+0x26/0x40 block/ioctl.c:193 b_state=0x00000028, b_size=4096 loop_reread_partitions+0x163/0x190 drivers/block/loop.c:644 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 loop_set_status+0xb95/0x1010 drivers/block/loop.c:1198 b_state=0x00000028, b_size=4096 loop_set_status64+0xaa/0x100 drivers/block/loop.c:1316 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000028, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 lo_ioctl+0x90e/0x1d60 drivers/block/loop.c:1432 b_state=0x00000028, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 __blkdev_driver_ioctl block/ioctl.c:303 [inline] blkdev_ioctl+0x98e/0x21b0 block/ioctl.c:605 b_state=0x00000028, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000028, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000028, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000028, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000028, b_size=4096 block_ioctl+0xee/0x130 fs/block_dev.c:1883 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 vfs_ioctl fs/ioctl.c:46 [inline] file_ioctl fs/ioctl.c:509 [inline] do_vfs_ioctl+0x1de/0x1790 fs/ioctl.c:696 b_state=0x00000028, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000028, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000028, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000028, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 ksys_ioctl+0xa9/0xd0 fs/ioctl.c:713 b_state=0x00000028, b_size=4096 __do_sys_ioctl fs/ioctl.c:720 [inline] __se_sys_ioctl fs/ioctl.c:718 [inline] __x64_sys_ioctl+0x73/0xb0 fs/ioctl.c:718 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290 b_state=0x00000028, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000028, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000028, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000028, b_size=4096 entry_SYSCALL_64_after_hwframe+0x49/0xbe device loop0 blocksize: 2048 RIP: 0033:0x457569 Code: Bad RIP value. __find_get_block_slow() failed. block=1, b_blocknr=0 RSP: 002b:00007f274f2b2c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 b_state=0x00000028, b_size=4096 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000457569 device loop0 blocksize: 2048 RDX: 00000000200000c0 RSI: 0000000000004c04 RDI: 0000000000000003 RBP: 000000000072bf00 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f274f2b36d4 __find_get_block_slow() failed. block=1, b_blocknr=0 R13: 00000000004c06e8 R14: 00000000004d0b20 R15: 00000000ffffffff b_state=0x00000028, b_size=4096 INFO: task blkid:8501 blocked for more than 140 seconds. device loop0 blocksize: 2048 Not tainted 4.20.0-rc1+ #107 __find_get_block_slow() failed. block=1, b_blocknr=0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. b_state=0x00000028, b_size=4096 blkid D23832 8501 3658 0x00000004 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 Call Trace: b_state=0x00000028, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 context_switch kernel/sched/core.c:2831 [inline] __schedule+0x8cf/0x21d0 kernel/sched/core.c:3472 b_state=0x00000028, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000028, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000028, b_size=4096 schedule+0xfe/0x460 kernel/sched/core.c:3516 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000028, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000028, b_size=4096 device loop0 blocksize: 2048 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3574 __find_get_block_slow() failed. block=1, b_blocknr=0 __mutex_lock_common kernel/locking/mutex.c:1002 [inline] __mutex_lock+0xaff/0x16f0 kernel/locking/mutex.c:1072 b_state=0x00000028, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000028, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000028, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000028, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000028, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000028, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000028, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000028, b_size=4096 device loop0 blocksize: 2048 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1087 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000028, b_size=4096 __blkdev_get+0x19b/0x13c0 fs/block_dev.c:1466 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000028, b_size=4096 blkdev_get+0xc1/0xb50 fs/block_dev.c:1617 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000028, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000028, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000028, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 blkdev_open+0x1fb/0x280 fs/block_dev.c:1775 b_state=0x00000028, b_size=4096 do_dentry_open+0x499/0x1250 fs/open.c:771 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000028, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000028, b_size=4096 vfs_open+0xa0/0xd0 fs/open.c:880 device loop0 blocksize: 2048 do_last fs/namei.c:3418 [inline] path_openat+0x12bc/0x5150 fs/namei.c:3534 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000028, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000028, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000028, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000028, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000028, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000028, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000028, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000028, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 do_filp_open+0x255/0x380 fs/namei.c:3564 b_state=0x00000028, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000028, b_size=4096 device loop0 blocksize: 2048 do_sys_open+0x568/0x700 fs/open.c:1063 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000028, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 __do_sys_open fs/open.c:1081 [inline] __se_sys_open fs/open.c:1076 [inline] __x64_sys_open+0x7e/0xc0 fs/open.c:1076 b_state=0x00000028, b_size=4096 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000028, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000028, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000028, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 entry_SYSCALL_64_after_hwframe+0x49/0xbe b_state=0x00000028, b_size=4096 RIP: 0033:0x7f63b7613120 Code: Bad RIP value. device loop0 blocksize: 2048 RSP: 002b:00007fff3331e1b8 EFLAGS: 00000246 ORIG_RAX: 0000000000000002 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f63b7613120 RDX: 00007fff3331ef41 RSI: 0000000000000000 RDI: 00007fff3331ef41 __find_get_block_slow() failed. block=1, b_blocknr=0 RBP: 0000000000000000 R08: 0000000000000078 R09: 0000000000000000 b_state=0x00000028, b_size=4096 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000021de030 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000005 device loop0 blocksize: 2048 Showing all locks held in the system: __find_get_block_slow() failed. block=1, b_blocknr=0 1 lock held by khungtaskd/1008: b_state=0x00000028, b_size=4096 #0: 00000000ddad14e0 (rcu_read_lock){....}, at: debug_show_all_locks+0xd0/0x424 kernel/locking/lockdep.c:4379 device loop0 blocksize: 2048 1 lock held by rsyslogd/5532: __find_get_block_slow() failed. block=1, b_blocknr=0 #0: 00000000e6f234d7 (&f->f_pos_lock){+.+.}, at: __fdget_pos+0x1bb/0x200 fs/file.c:766 b_state=0x00000028, b_size=4096 device loop0 blocksize: 2048 2 locks held by getty/5622: __find_get_block_slow() failed. block=1, b_blocknr=0 #0: 00000000e70d49c2 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:353 b_state=0x00000028, b_size=4096 device loop0 blocksize: 2048 #1: 00000000d9970687 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1e80 drivers/tty/n_tty.c:2154 __find_get_block_slow() failed. block=1, b_blocknr=0 2 locks held by getty/5623: b_state=0x00000028, b_size=4096 #0: 000000003a8b99ad (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:353 device loop0 blocksize: 2048 #1: 000000001ca4936e (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1e80 drivers/tty/n_tty.c:2154 2 locks held by getty/5624: __find_get_block_slow() failed. block=1, b_blocknr=0 #0: 0000000089cfac25 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:353 b_state=0x00000028, b_size=4096 #1: 0000000050baaba7 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1e80 drivers/tty/n_tty.c:2154 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 2 locks held by getty/5625: b_state=0x00000028, b_size=4096 #0: 000000000a0fef95 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:353 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 #1: 00000000c409507b (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1e80 drivers/tty/n_tty.c:2154 b_state=0x00000028, b_size=4096 2 locks held by getty/5626: device loop0 blocksize: 2048 #0: 00000000fc3f517c (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:353 __find_get_block_slow() failed. block=1, b_blocknr=0 #1: 000000001f49a58d (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1e80 drivers/tty/n_tty.c:2154 b_state=0x00000028, b_size=4096 2 locks held by getty/5627: #0: 000000001e1bf239 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:353 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 #1: 00000000d35abb07 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1e80 drivers/tty/n_tty.c:2154 b_state=0x00000028, b_size=4096 2 locks held by getty/5628: device loop0 blocksize: 2048 #0: 00000000c7c09b46 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:353 __find_get_block_slow() failed. block=1, b_blocknr=0 #1: 000000000e2af759 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1e80 drivers/tty/n_tty.c:2154 b_state=0x00000028, b_size=4096 1 lock held by syz-executor0/8494: #0: 0000000033d16499 (&bdev->bd_mutex){+.+.}, at: blkdev_put+0x34/0x540 fs/block_dev.c:1816 device loop0 blocksize: 2048 3 locks held by syz-executor0/8497: __find_get_block_slow() failed. block=1, b_blocknr=0 1 lock held by syz-executor0/8541: b_state=0x00000028, b_size=4096 #0: 0000000033d16499 (&bdev->bd_mutex){+.+.}, at: __blkdev_get+0x19b/0x13c0 fs/block_dev.c:1466 device loop0 blocksize: 2048 3 locks held by syz-executor2/8499: __find_get_block_slow() failed. block=1, b_blocknr=0 #0: 00000000742dfaa0 (&lo->lo_ctl_mutex/1){+.+.}, at: lo_ioctl+0x8e/0x1d60 drivers/block/loop.c:1402 b_state=0x00000028, b_size=4096 device loop0 blocksize: 2048 #1: 0000000033d16499 (&bdev->bd_mutex){+.+.}, at: blkdev_reread_part+0x1e/0x40 block/ioctl.c:192 __find_get_block_slow() failed. block=1, b_blocknr=0 #2: 000000001ba7d1e9 (&type->s_umount_key#59){.+.+}, at: __get_super.part.11+0x207/0x2e0 fs/super.c:698 b_state=0x00000028, b_size=4096 1 lock held by blkid/8501: #0: 0000000033d16499 (&bdev->bd_mutex){+.+.}, at: __blkdev_get+0x19b/0x13c0 fs/block_dev.c:1466 device loop0 blocksize: 2048 ============================================= NMI backtrace for cpu 1 __find_get_block_slow() failed. block=1, b_blocknr=0 CPU: 1 PID: 1008 Comm: khungtaskd Not tainted 4.20.0-rc1+ #107 b_state=0x00000028, b_size=4096 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+0x244/0x39d lib/dump_stack.c:113 device loop0 blocksize: 2048 nmi_cpu_backtrace.cold.2+0x5c/0xa1 lib/nmi_backtrace.c:101 nmi_trigger_cpumask_backtrace+0x1e8/0x22a lib/nmi_backtrace.c:62 __find_get_block_slow() failed. block=1, b_blocknr=0 arch_trigger_cpumask_backtrace+0x14/0x20 arch/x86/kernel/apic/hw_nmi.c:38 b_state=0x00000028, b_size=4096 trigger_all_cpu_backtrace include/linux/nmi.h:144 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:205 [inline] watchdog+0xb51/0x1060 kernel/hung_task.c:289 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000028, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000028, b_size=4096 device loop0 blocksize: 2048 kthread+0x35a/0x440 kernel/kthread.c:246 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:352 Sending NMI from CPU 1 to CPUs 0: __find_get_block_slow() failed. block=1, b_blocknr=0 NMI backtrace for cpu 0 CPU: 0 PID: 8497 Comm: syz-executor0 Not tainted 4.20.0-rc1+ #107 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:vsnprintf+0x20d/0x1b60 lib/vsprintf.c:2375 Code: 4c 8b bd 40 ff ff ff 31 ff 4c 89 fe e8 bc a1 b4 f9 4d 85 ff 0f 85 d3 08 00 00 e8 7e a0 b4 f9 2b 9d 38 ff ff ff e8 73 a0 b4 f9 <48> 8b 8d 30 ff ff ff 48 b8 00 00 00 00 00 fc ff df 48 c7 04 01 00 RSP: 0018:ffff880180b66940 EFLAGS: 00000046 RAX: 0000000000040000 RBX: 000000000000000f RCX: ffffc90002551000 RDX: 0000000000040000 RSI: ffffffff87caea4d RDI: 0000000000000007 RBP: ffff880180b66a10 R08: ffff8801bf19a600 R09: ffffed003016cd5d R10: ffffed003016cd5d R11: 0000000000000003 R12: ffffffff882bec2e R13: 0000000000000000 R14: ffffffff882bec2e R15: 0000000000000000 FS: 00007f0912435700(0000) GS:ffff8801dae00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffffffff600400 CR3: 00000001d323d000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: snprintf+0xae/0xe0 lib/vsprintf.c:2429 print_time kernel/printk/printk.c:1226 [inline] print_prefix+0x38e/0x3f0 kernel/printk/printk.c:1251 msg_print_text+0x83/0x1d0 kernel/printk/printk.c:1274 console_unlock+0x4e6/0x1190 kernel/printk/printk.c:2388 vprintk_emit+0x391/0x990 kernel/printk/printk.c:1922 vprintk_default+0x28/0x30 kernel/printk/printk.c:1964 vprintk_func+0x7e/0x181 kernel/printk/printk_safe.c:398 printk+0xa7/0xcf kernel/printk/printk.c:1997 __find_get_block_slow fs/buffer.c:231 [inline] __find_get_block.cold.57+0x3a/0xff fs/buffer.c:1294 __getblk_slow fs/buffer.c:1039 [inline] __getblk_gfp+0x2b3/0xd50 fs/buffer.c:1320 __bread_gfp+0x2d/0x310 fs/buffer.c:1354 sb_bread include/linux/buffer_head.h:307 [inline] read_raw_super_block fs/f2fs/super.c:2830 [inline] f2fs_fill_super+0x440/0x8a20 fs/f2fs/super.c:3058 mount_bdev+0x30c/0x3e0 fs/super.c:1158 f2fs_mount+0x34/0x40 fs/f2fs/super.c:3457 mount_fs+0xae/0x31d fs/super.c:1261 vfs_kern_mount.part.35+0xdc/0x4f0 fs/namespace.c:961 vfs_kern_mount fs/namespace.c:951 [inline] do_new_mount fs/namespace.c:2457 [inline] do_mount+0x581/0x31f0 fs/namespace.c:2789 ksys_mount+0x12d/0x140 fs/namespace.c:3005 __do_sys_mount fs/namespace.c:3019 [inline] __se_sys_mount fs/namespace.c:3016 [inline] __x64_sys_mount+0xbe/0x150 fs/namespace.c:3016 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x459fda Code: b8 a6 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 7d 89 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 5a 89 fb ff c3 66 0f 1f 84 00 00 00 00 00 RSP: 002b:00007f0912434a88 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007f0912434b30 RCX: 0000000000459fda RDX: 00007f0912434ad0 RSI: 0000000020000340 RDI: 00007f0912434af0 RBP: 0000000020000340 R08: 00007f0912434b30 R09: 00007f0912434ad0 R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000003 R13: 0000000000000000 R14: 00000000004d82a8 R15: 00000000ffffffff