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 INFO: task syz-executor5:23595 blocked for more than 140 seconds. __find_get_block_slow() failed. block=1, b_blocknr=0 Not tainted 4.19.0+ #320 b_state=0x00000028, b_size=4096 device loop0 blocksize: 2048 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. __find_get_block_slow() failed. block=1, b_blocknr=0 syz-executor5 D22776 23595 20185 0x00000004 b_state=0x00000028, b_size=4096 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 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+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 __get_super.part.11+0x207/0x2e0 fs/super.c:698 b_state=0x00000028, b_size=4096 device loop0 blocksize: 2048 __get_super include/linux/spinlock.h:329 [inline] get_super+0x2d/0x50 fs/super.c:727 __find_get_block_slow() failed. block=1, b_blocknr=0 fsync_bdev+0x17/0xc0 fs/block_dev.c:469 b_state=0x00000028, b_size=4096 invalidate_partition+0x35/0x60 block/genhd.c:1570 device loop0 blocksize: 2048 drop_partitions.isra.14+0xe1/0x200 block/partition-generic.c:445 __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 rescan_partitions+0x72/0x8e0 block/partition-generic.c:518 b_state=0x00000028, b_size=4096 __blkdev_reread_part+0x1ad/0x230 block/ioctl.c:173 device loop0 blocksize: 2048 __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 device loop0 blocksize: 2048 loop_reread_partitions+0x163/0x190 drivers/block/loop.c:644 __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 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 lo_ioctl+0x90e/0x1d60 drivers/block/loop.c:1432 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000028, b_size=4096 device loop0 blocksize: 2048 __blkdev_driver_ioctl block/ioctl.c:303 [inline] blkdev_ioctl+0x98e/0x21b0 block/ioctl.c:605 __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 block_ioctl+0xee/0x130 fs/block_dev.c:1883 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000028, b_size=4096 vfs_ioctl fs/ioctl.c:46 [inline] file_ioctl fs/ioctl.c:509 [inline] do_vfs_ioctl+0x1de/0x1790 fs/ioctl.c:696 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 ksys_ioctl+0xa9/0xd0 fs/ioctl.c:713 device loop0 blocksize: 2048 __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 __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 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 __find_get_block_slow() failed. block=1, b_blocknr=0 Code: Bad RIP value. b_state=0x00000028, b_size=4096 RSP: 002b:00007f984b3dcc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 device loop0 blocksize: 2048 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000457569 __find_get_block_slow() failed. block=1, b_blocknr=0 RDX: 0000000020000380 RSI: 0000000000004c04 RDI: 000000000000000a b_state=0x00000028, b_size=4096 RBP: 000000000072bf00 R08: 0000000000000000 R09: 0000000000000000 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f984b3dd6d4 b_state=0x00000028, b_size=4096 R13: 00000000004c06e8 R14: 00000000004d0b20 R15: 00000000ffffffff device loop0 blocksize: 2048 INFO: task syz-executor0:23590 blocked for more than 140 seconds. __find_get_block_slow() failed. block=1, b_blocknr=0 Not tainted 4.19.0+ #320 b_state=0x00000028, b_size=4096 device loop0 blocksize: 2048 __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 syz-executor0 D23160 23590 5712 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 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 __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 schedule+0xfe/0x460 kernel/sched/core.c:3516 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 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3574 b_state=0x00000028, b_size=4096 __mutex_lock_common kernel/locking/mutex.c:1002 [inline] __mutex_lock+0xaff/0x16f0 kernel/locking/mutex.c:1072 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 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 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1087 b_state=0x00000028, b_size=4096 device loop0 blocksize: 2048 blkdev_put+0x34/0x540 fs/block_dev.c:1816 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000028, b_size=4096 blkdev_close+0x8b/0xb0 fs/block_dev.c:1865 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 ____fput+0x15/0x20 fs/file_table.c:309 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 tracehook_notify_resume include/linux/tracehook.h:188 [inline] exit_to_usermode_loop+0x318/0x380 arch/x86/entry/common.c:166 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000028, b_size=4096 device loop0 blocksize: 2048 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 __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 entry_SYSCALL_64_after_hwframe+0x49/0xbe b_state=0x00000028, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 RIP: 0033:0x411021 b_state=0x00000028, b_size=4096 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:00007ffcaa77f230 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: 0000000000730248 RDI: 0000000000000004 device loop0 blocksize: 2048 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 __find_get_block_slow() failed. block=1, b_blocknr=0 R10: 00007ffcaa77f160 R11: 0000000000000293 R12: 0000000000000000 b_state=0x00000028, b_size=4096 R13: 0000000000000001 R14: 0000000000000268 R15: 0000000000000000 INFO: task syz-executor0:23629 blocked for more than 140 seconds. device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 Not tainted 4.19.0+ #320 b_state=0x00000028, b_size=4096 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. device loop0 blocksize: 2048 syz-executor0 D23536 23629 5712 0x00000004 __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 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+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 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 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 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 device loop0 blocksize: 2048 blkdev_open+0x1fb/0x280 fs/block_dev.c:1775 __find_get_block_slow() failed. block=1, b_blocknr=0 do_dentry_open+0x499/0x1250 fs/open.c:771 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 vfs_open+0xa0/0xd0 fs/open.c:880 b_state=0x00000028, b_size=4096 do_last fs/namei.c:3418 [inline] path_openat+0x12bc/0x5150 fs/namei.c:3534 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 do_filp_open+0x255/0x380 fs/namei.c:3564 __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_sys_open+0x568/0x700 fs/open.c:1063 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000028, b_size=4096 __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 device loop0 blocksize: 2048 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290 __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 entry_SYSCALL_64_after_hwframe+0x49/0xbe b_state=0x00000028, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 RIP: 0033:0x4111a1 b_state=0x00000028, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 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 b_state=0x00000028, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 RSP: 002b:00007f80c8cc6a80 EFLAGS: 00000293 ORIG_RAX: 0000000000000002 b_state=0x00000028, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 RAX: ffffffffffffffda RBX: 0000000020000228 RCX: 00000000004111a1 b_state=0x00000028, b_size=4096 RDX: 00007f80c8cc6afa RSI: 0000000000000002 RDI: 00007f80c8cc6af0 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 R13: 0000000000000001 R14: 00000000004d82a8 R15: 00000000ffffffff b_state=0x00000028, b_size=4096 Showing all locks held in the system: device loop0 blocksize: 2048 1 lock held by khungtaskd/1008: __find_get_block_slow() failed. block=1, b_blocknr=0 #0: 000000005fa84254 (rcu_read_lock){....}, at: debug_show_all_locks+0xd0/0x424 kernel/locking/lockdep.c:4379 b_state=0x00000028, b_size=4096 1 lock held by rsyslogd/5582: device loop0 blocksize: 2048 2 locks held by getty/5672: __find_get_block_slow() failed. block=1, b_blocknr=0 #0: 00000000d65aeb5a (&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: 000000004c3a07f6 (&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/5673: b_state=0x00000028, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 #0: 00000000c4b343a5 (&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 __find_get_block_slow() failed. block=1, b_blocknr=0 #1: 0000000098f1a5d8 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1e80 drivers/tty/n_tty.c:2154 b_state=0x00000028, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 2 locks held by getty/5674: b_state=0x00000028, b_size=4096 #0: 00000000a49ce8a5 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:353 #1: 00000000c0571055 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1e80 drivers/tty/n_tty.c:2154 device loop0 blocksize: 2048 2 locks held by getty/5675: __find_get_block_slow() failed. block=1, b_blocknr=0 #0: 00000000c5127c36 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:353 b_state=0x00000028, b_size=4096 #1: 00000000db12572b (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1e80 drivers/tty/n_tty.c:2154 device loop0 blocksize: 2048 2 locks held by getty/5676: #0: 0000000007239706 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:353 #1: 0000000027a5ba74 (&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/5677: b_state=0x00000028, b_size=4096 #0: 00000000f1d8ae4f (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:353 device loop0 blocksize: 2048 #1: 00000000ee161813 (&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/5678: b_state=0x00000028, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 #0: 00000000cced2d2a (&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 __find_get_block_slow() failed. block=1, b_blocknr=0 #1: 00000000a297c4bf (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1e80 drivers/tty/n_tty.c:2154 b_state=0x00000028, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 3 locks held by syz-executor5/23595: b_state=0x00000028, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 #0: 000000002c5cf673 (&lo->lo_ctl_mutex/1){+.+.}, at: lo_ioctl+0x8e/0x1d60 drivers/block/loop.c:1402 b_state=0x00000028, b_size=4096 #1: 000000005fa3bbd5 (&bdev->bd_mutex){+.+.}, at: blkdev_reread_part+0x1e/0x40 block/ioctl.c:192 device loop0 blocksize: 2048 #2: 0000000060cb1a05 (&type->s_umount_key#61){.+.+}, at: __get_super.part.11+0x207/0x2e0 fs/super.c:698 1 lock held by syz-executor0/23590: __find_get_block_slow() failed. block=1, b_blocknr=0 #0: 000000005fa3bbd5 (&bdev->bd_mutex){+.+.}, at: blkdev_put+0x34/0x540 fs/block_dev.c:1816 b_state=0x00000028, b_size=4096 2 locks held by syz-executor0/23591: 1 lock held by syz-executor0/23629: device loop0 blocksize: 2048 #0: 000000005fa3bbd5 (&bdev->bd_mutex){+.+.}, at: __blkdev_get+0x19b/0x13c0 fs/block_dev.c:1466 __find_get_block_slow() failed. block=1, b_blocknr=0 1 lock held by blkid/23599: b_state=0x00000028, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 #0: 000000005fa3bbd5 (&bdev->bd_mutex){+.+.}, at: 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 b_state=0x00000028, b_size=4096 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 4.19.0+ #320 b_state=0x00000028, b_size=4096 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: device loop0 blocksize: 2048 __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x244/0x39d lib/dump_stack.c:113 nmi_cpu_backtrace.cold.2+0x5c/0xa1 lib/nmi_backtrace.c:101 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000028, b_size=4096 nmi_trigger_cpumask_backtrace+0x1e8/0x22a lib/nmi_backtrace.c:62 arch_trigger_cpumask_backtrace+0x14/0x20 arch/x86/kernel/apic/hw_nmi.c:38 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 __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: 23591 Comm: syz-executor0 Not tainted 4.19.0+ #320 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:rep_nop arch/x86/include/asm/processor.h:660 [inline] RIP: 0010:delay_tsc+0x33/0xc0 arch/x86/lib/delay.c:67 Code: 89 fd bf 01 00 00 00 41 54 53 e8 e8 87 89 f9 e8 c3 ea c6 fb 41 89 c6 0f ae e8 0f 31 48 c1 e2 20 48 09 c2 49 89 d4 eb 16 f3 90 01 00 00 00 e8 c3 87 89 f9 e8 9e ea c6 fb 44 39 f0 75 36 0f ae RSP: 0018:ffff880186e4e918 EFLAGS: 00000086 RAX: 0000000080000003 RBX: 000001bc564e4639 RCX: 0000000000000000 RDX: 0000000000000004 RSI: ffffffff83932e18 RDI: ffffffff8b0dd7a0 RBP: ffff880186e4e938 R08: ffff8801c4138200 R09: ffffed0030dc9d30 R10: ffffed0030dc9d30 R11: 0000000000000003 R12: 000001bc564e41ae R13: 00000000000008fd R14: 0000000000000000 R15: fffffbfff175ce5d FS: 00007f80c8ce8700(0000) GS:ffff8801dae00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffffffff600400 CR3: 00000001bed7c000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __delay arch/x86/lib/delay.c:161 [inline] __const_udelay+0x62/0x80 arch/x86/lib/delay.c:175 wait_for_xmitr+0x7d/0x250 drivers/tty/serial/8250/8250_port.c:2055 serial8250_console_putchar+0x1f/0x60 drivers/tty/serial/8250/8250_port.c:3218 uart_console_write+0x63/0x110 drivers/tty/serial/serial_core.c:1897 serial8250_console_write+0x714/0xb10 drivers/tty/serial/8250/8250_port.c:3284 univ8250_console_write+0x5f/0x70 drivers/tty/serial/8250/8250_core.c:586 call_console_drivers kernel/printk/printk.c:1728 [inline] console_unlock+0xb1f/0x1190 kernel/printk/printk.c:2414 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:00007f80c8ce7a88 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007f80c8ce7b30 RCX: 0000000000459fda RDX: 00007f80c8ce7ad0 RSI: 0000000020000100 RDI: 00007f80c8ce7af0 RBP: 0000000020000100 R08: 00007f80c8ce7b30 R09: 00007f80c8ce7ad0 R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000003 R13: 0000000000000000 R14: 00000000004d82a8 R15: 00000000ffffffff