__find_get_block_slow() failed. block=89, b_blocknr=44 b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 b_state=0x00000029, b_size=1024 INFO: task syz-executor0:13789 blocked for more than 140 seconds. device loop0 blocksize: 512 Not tainted 4.19.0-rc5+ #34 __find_get_block_slow() failed. block=89, b_blocknr=44 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 syz-executor0 D b_state=0x00000029, b_size=1024 23400 13789 5536 0x00000004 device loop0 blocksize: 512 Call Trace: __find_get_block_slow() failed. block=89, b_blocknr=44 context_switch kernel/sched/core.c:2825 [inline] __schedule+0x86c/0x1ed0 kernel/sched/core.c:3473 b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 schedule+0xfe/0x460 kernel/sched/core.c:3517 __find_get_block_slow() failed. block=89, b_blocknr=44 b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 b_state=0x00000029, b_size=1024 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3575 device loop0 blocksize: 512 __mutex_lock_common kernel/locking/mutex.c:1002 [inline] __mutex_lock+0xbe7/0x1700 kernel/locking/mutex.c:1072 __find_get_block_slow() failed. block=89, b_blocknr=44 b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1087 __find_get_block_slow() failed. block=89, b_blocknr=44 b_state=0x00000029, b_size=1024 blkdev_put+0x34/0x540 fs/block_dev.c:1816 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 blkdev_close+0x8b/0xb0 fs/block_dev.c:1865 b_state=0x00000029, b_size=1024 __fput+0x385/0xa30 fs/file_table.c:278 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 ____fput+0x15/0x20 fs/file_table.c:309 b_state=0x00000029, b_size=1024 task_work_run+0x1e8/0x2a0 kernel/task_work.c:113 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 tracehook_notify_resume include/linux/tracehook.h:193 [inline] exit_to_usermode_loop+0x318/0x380 arch/x86/entry/common.c:166 b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 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=89, b_blocknr=44 b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 b_state=0x00000029, b_size=1024 entry_SYSCALL_64_after_hwframe+0x49/0xbe device loop0 blocksize: 512 RIP: 0033:0x411051 __find_get_block_slow() failed. block=89, b_blocknr=44 Code: e9 db fc ff ff 0f 1f 40 00 41 80 f8 29 74 7f ba f8 33 44 00 be ff ff ff ff 31 ff 31 c0 ff 15 ee 83 24 00 4c 8b 54 24 28 41 0f 12 e9 39 fc ff ff 0f 1f 84 00 00 00 00 00 49 8d 4a 01 48 89 4c b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 RSP: 002b:00007ffd50477b50 EFLAGS: 00000293 b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 ORIG_RAX: 0000000000000003 b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 RAX: 0000000000000000 RBX: 0000000000000006 RCX: 0000000000411051 __find_get_block_slow() failed. block=89, b_blocknr=44 RDX: 0000000000000000 RSI: 0000000000730d00 RDI: 0000000000000005 b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 R10: 00007ffd50477a80 R11: 0000000000000293 R12: 0000000000000000 b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 R13: 0000000000000001 R14: 00000000000000c6 R15: 0000000000000000 b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 INFO: task syz-executor0:13833 blocked for more than 140 seconds. b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 Not tainted 4.19.0-rc5+ #34 b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. __find_get_block_slow() failed. block=89, b_blocknr=44 syz-executor0 D b_state=0x00000029, b_size=1024 23520 13833 5536 0x00000004 device loop0 blocksize: 512 Call Trace: __find_get_block_slow() failed. block=89, b_blocknr=44 context_switch kernel/sched/core.c:2825 [inline] __schedule+0x86c/0x1ed0 kernel/sched/core.c:3473 b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 schedule+0xfe/0x460 kernel/sched/core.c:3517 __find_get_block_slow() failed. block=89, b_blocknr=44 b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 b_state=0x00000029, b_size=1024 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3575 device loop0 blocksize: 512 __mutex_lock_common kernel/locking/mutex.c:1002 [inline] __mutex_lock+0xbe7/0x1700 kernel/locking/mutex.c:1072 __find_get_block_slow() failed. block=89, b_blocknr=44 b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 b_state=0x00000029, b_size=1024 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1087 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 __blkdev_get+0x19b/0x13c0 fs/block_dev.c:1466 b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 blkdev_get+0xc1/0xb50 fs/block_dev.c:1617 b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 blkdev_open+0x1fb/0x280 fs/block_dev.c:1775 b_state=0x00000029, b_size=1024 do_dentry_open+0x499/0x1250 fs/open.c:771 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 b_state=0x00000029, b_size=1024 vfs_open+0xa0/0xd0 fs/open.c:880 device loop0 blocksize: 512 do_last fs/namei.c:3418 [inline] path_openat+0x12bf/0x5160 fs/namei.c:3534 __find_get_block_slow() failed. block=89, b_blocknr=44 b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 b_state=0x00000029, b_size=1024 do_filp_open+0x255/0x380 fs/namei.c:3564 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 do_sys_open+0x568/0x700 fs/open.c:1063 b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 b_state=0x00000029, b_size=1024 __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: 512 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290 __find_get_block_slow() failed. block=89, b_blocknr=44 b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 entry_SYSCALL_64_after_hwframe+0x49/0xbe b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 RIP: 0033:0x4111d1 b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 Code: e9 44 fb ff ff 4d 89 d7 e9 3c fb ff ff b9 40 95 65 00 ba c4 31 44 00 be cf 31 44 00 bf bc 31 44 00 ff 15 9a 80 24 00 85 c0 41 <89> c6 75 a4 b9 e0 95 65 00 ba d7 31 44 00 be d9 31 44 00 bf bc 31 __find_get_block_slow() failed. block=89, b_blocknr=44 RSP: 002b:00007fc0ae749a80 EFLAGS: 00000293 b_state=0x00000029, b_size=1024 ORIG_RAX: 0000000000000002 device loop0 blocksize: 512 RAX: ffffffffffffffda RBX: 00000000200000e8 RCX: 00000000004111d1 RDX: 00007fc0ae749afa RSI: 0000000000000002 RDI: 00007fc0ae749af0 RBP: 0000000000000001 R08: 0000000000000000 R09: 000000000000000a R10: 0000000000000075 R11: 0000000000000293 R12: 0000000000000007 R13: 0000000000000001 R14: 00000000004d7e30 R15: 00000000ffffffff __find_get_block_slow() failed. block=89, b_blocknr=44 b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 INFO: task syz-executor3:13808 blocked for more than 140 seconds. b_state=0x00000029, b_size=1024 Not tainted 4.19.0-rc5+ #34 device loop0 blocksize: 512 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. __find_get_block_slow() failed. block=89, b_blocknr=44 syz-executor3 D b_state=0x00000029, b_size=1024 24024 13808 5594 0x00000004 Call Trace: device loop0 blocksize: 512 context_switch kernel/sched/core.c:2825 [inline] __schedule+0x86c/0x1ed0 kernel/sched/core.c:3473 __find_get_block_slow() failed. block=89, b_blocknr=44 b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 b_state=0x00000029, b_size=1024 schedule+0xfe/0x460 kernel/sched/core.c:3517 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 __rwsem_down_read_failed_common kernel/locking/rwsem-xadd.c:269 [inline] rwsem_down_read_failed+0x362/0x610 kernel/locking/rwsem-xadd.c:286 __find_get_block_slow() failed. block=89, b_blocknr=44 b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 call_rwsem_down_read_failed+0x18/0x30 arch/x86/lib/rwsem.S:94 b_state=0x00000029, b_size=1024 __down_read arch/x86/include/asm/rwsem.h:83 [inline] down_read+0xbe/0x1d0 kernel/locking/rwsem.c:26 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 __get_super.part.11+0x207/0x2e0 fs/super.c:698 __find_get_block_slow() failed. block=89, b_blocknr=44 __get_super include/linux/spinlock.h:329 [inline] get_super+0x2d/0x50 fs/super.c:727 b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 fsync_bdev+0x17/0xc0 fs/block_dev.c:469 b_state=0x00000029, b_size=1024 invalidate_partition+0x35/0x60 block/genhd.c:1561 device loop0 blocksize: 512 drop_partitions.isra.14+0xe1/0x200 block/partition-generic.c:445 __find_get_block_slow() failed. block=89, b_blocknr=44 b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 b_state=0x00000029, b_size=1024 rescan_partitions+0x72/0x8e0 block/partition-generic.c:518 device loop0 blocksize: 512 __blkdev_reread_part+0x1ad/0x230 block/ioctl.c:173 __find_get_block_slow() failed. block=89, b_blocknr=44 blkdev_reread_part+0x26/0x40 block/ioctl.c:193 b_state=0x00000029, b_size=1024 loop_reread_partitions+0x163/0x190 drivers/block/loop.c:645 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 loop_set_status+0xb95/0x1010 drivers/block/loop.c:1199 b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 loop_set_status64+0xaa/0x100 drivers/block/loop.c:1317 b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 b_state=0x00000029, b_size=1024 lo_ioctl+0x90e/0x1d80 drivers/block/loop.c:1433 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 b_state=0x00000029, b_size=1024 __blkdev_driver_ioctl block/ioctl.c:303 [inline] blkdev_ioctl+0x9ac/0x2010 block/ioctl.c:601 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 b_state=0x00000029, b_size=1024 block_ioctl+0xee/0x130 fs/block_dev.c:1883 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 b_state=0x00000029, b_size=1024 vfs_ioctl fs/ioctl.c:46 [inline] file_ioctl fs/ioctl.c:501 [inline] do_vfs_ioctl+0x1de/0x1720 fs/ioctl.c:685 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 ksys_ioctl+0xa9/0xd0 fs/ioctl.c:702 b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 __do_sys_ioctl fs/ioctl.c:709 [inline] __se_sys_ioctl fs/ioctl.c:707 [inline] __x64_sys_ioctl+0x73/0xb0 fs/ioctl.c:707 b_state=0x00000029, b_size=1024 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 b_state=0x00000029, b_size=1024 entry_SYSCALL_64_after_hwframe+0x49/0xbe device loop0 blocksize: 512 RIP: 0033:0x457579 __find_get_block_slow() failed. block=89, b_blocknr=44 Code: Bad RIP value. b_state=0x00000029, b_size=1024 RSP: 002b:00007fc3831e7c78 EFLAGS: 00000246 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 ORIG_RAX: 0000000000000010 b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000457579 b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 RDX: 0000000020000380 RSI: 0000000000004c04 RDI: 0000000000000003 b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 RBP: 000000000072bf00 R08: 0000000000000000 R09: 0000000000000000 __find_get_block_slow() failed. block=89, b_blocknr=44 R10: 0000000000000000 R11: 0000000000000246 R12: 00007fc3831e86d4 b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 R13: 00000000004c0495 R14: 00000000004d0630 R15: 00000000ffffffff b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 INFO: task syz-executor3:13836 blocked for more than 140 seconds. b_state=0x00000029, b_size=1024 Not tainted 4.19.0-rc5+ #34 device loop0 blocksize: 512 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. __find_get_block_slow() failed. block=89, b_blocknr=44 syz-executor3 D b_state=0x00000029, b_size=1024 24360 13836 5594 0x00000004 device loop0 blocksize: 512 Call Trace: __find_get_block_slow() failed. block=89, b_blocknr=44 context_switch kernel/sched/core.c:2825 [inline] __schedule+0x86c/0x1ed0 kernel/sched/core.c:3473 b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 b_state=0x00000029, b_size=1024 schedule+0xfe/0x460 kernel/sched/core.c:3517 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3575 __find_get_block_slow() failed. block=89, b_blocknr=44 __mutex_lock_common kernel/locking/mutex.c:1002 [inline] __mutex_lock+0xbe7/0x1700 kernel/locking/mutex.c:1072 b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1087 b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 __blkdev_get+0x19b/0x13c0 fs/block_dev.c:1466 b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 blkdev_get+0xc1/0xb50 fs/block_dev.c:1617 __find_get_block_slow() failed. block=89, b_blocknr=44 b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 blkdev_open+0x1fb/0x280 fs/block_dev.c:1775 b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 b_state=0x00000029, b_size=1024 do_dentry_open+0x499/0x1250 fs/open.c:771 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 b_state=0x00000029, b_size=1024 vfs_open+0xa0/0xd0 fs/open.c:880 device loop0 blocksize: 512 do_last fs/namei.c:3418 [inline] path_openat+0x12bf/0x5160 fs/namei.c:3534 __find_get_block_slow() failed. block=89, b_blocknr=44 b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 b_state=0x00000029, b_size=1024 do_filp_open+0x255/0x380 fs/namei.c:3564 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 do_sys_open+0x568/0x700 fs/open.c:1063 b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 __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=0x00000029, b_size=1024 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 entry_SYSCALL_64_after_hwframe+0x49/0xbe __find_get_block_slow() failed. block=89, b_blocknr=44 RIP: 0033:0x4111d1 b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 Code: e9 44 fb ff ff 4d 89 d7 e9 3c fb ff ff b9 40 95 65 00 ba c4 31 44 00 be cf 31 44 00 bf bc 31 44 00 ff 15 9a 80 24 00 85 c0 41 <89> c6 75 a4 b9 e0 95 65 00 ba d7 31 44 00 be d9 31 44 00 bf bc 31 b_state=0x00000029, b_size=1024 RSP: 002b:00007fc3831c67a0 EFLAGS: 00000293 device loop0 blocksize: 512 ORIG_RAX: 0000000000000002 __find_get_block_slow() failed. block=89, b_blocknr=44 RAX: ffffffffffffffda RBX: 6666666666666667 RCX: 00000000004111d1 b_state=0x00000029, b_size=1024 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00007fc3831c6850 device loop0 blocksize: 512 RBP: 000000000072bfa0 R08: 000000000000000f R09: 0000000000000000 __find_get_block_slow() failed. block=89, b_blocknr=44 R10: 00007fc3831c79d0 R11: 0000000000000293 R12: 00007fc3831c76d4 b_state=0x00000029, b_size=1024 R13: 00000000004c4cbb R14: 00000000004d8070 R15: 00000000ffffffff device loop0 blocksize: 512 Showing all locks held in the system: __find_get_block_slow() failed. block=89, b_blocknr=44 1 lock held by khungtaskd/985: b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 #0: b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 00000000962daf86 __find_get_block_slow() failed. block=89, b_blocknr=44 b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 ( b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 rcu_read_lock __find_get_block_slow() failed. block=89, b_blocknr=44 ){....} b_state=0x00000029, b_size=1024 , at: debug_show_all_locks+0xd0/0x424 kernel/locking/lockdep.c:4435 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 1 lock held by rsyslogd/5371: b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 #0: b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 000000006e54b413 b_state=0x00000029, b_size=1024 ( device loop0 blocksize: 512 &f->f_pos_lock __find_get_block_slow() failed. block=89, b_blocknr=44 ){+.+.} b_state=0x00000029, b_size=1024 , at: __fdget_pos+0x1bb/0x200 fs/file.c:766 device loop0 blocksize: 512 2 locks held by getty/5496: __find_get_block_slow() failed. block=89, b_blocknr=44 #0: b_state=0x00000029, b_size=1024 00000000a18206f2 device loop0 blocksize: 512 ( __find_get_block_slow() failed. block=89, b_blocknr=44 &tty->ldisc_sem b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 ){++++} b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 b_state=0x00000029, b_size=1024 , at: ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:353 device loop0 blocksize: 512 #1: __find_get_block_slow() failed. block=89, b_blocknr=44 000000002dc1ab9c b_state=0x00000029, b_size=1024 ( device loop0 blocksize: 512 &ldata->atomic_read_lock __find_get_block_slow() failed. block=89, b_blocknr=44 ){+.+.} b_state=0x00000029, b_size=1024 , at: n_tty_read+0x335/0x1ce0 drivers/tty/n_tty.c:2140 device loop0 blocksize: 512 2 locks held by getty/5497: __find_get_block_slow() failed. block=89, b_blocknr=44 #0: b_state=0x00000029, b_size=1024 000000004556a5fb device loop0 blocksize: 512 ( __find_get_block_slow() failed. block=89, b_blocknr=44 &tty->ldisc_sem b_state=0x00000029, b_size=1024 ){++++} device loop0 blocksize: 512 , at: ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:353 __find_get_block_slow() failed. block=89, b_blocknr=44 #1: b_state=0x00000029, b_size=1024 0000000006b15953 device loop0 blocksize: 512 ( __find_get_block_slow() failed. block=89, b_blocknr=44 &ldata->atomic_read_lock b_state=0x00000029, b_size=1024 ){+.+.} device loop0 blocksize: 512 , at: n_tty_read+0x335/0x1ce0 drivers/tty/n_tty.c:2140 __find_get_block_slow() failed. block=89, b_blocknr=44 2 locks held by getty/5498: b_state=0x00000029, b_size=1024 #0: device loop0 blocksize: 512 00000000d3ec01ae __find_get_block_slow() failed. block=89, b_blocknr=44 ( b_state=0x00000029, b_size=1024 &tty->ldisc_sem device loop0 blocksize: 512 ){++++} __find_get_block_slow() failed. block=89, b_blocknr=44 , at: ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:353 b_state=0x00000029, b_size=1024 #1: device loop0 blocksize: 512 000000005fa23ae9 __find_get_block_slow() failed. block=89, b_blocknr=44 ( b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 &ldata->atomic_read_lock __find_get_block_slow() failed. block=89, b_blocknr=44 ){+.+.} b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 , at: n_tty_read+0x335/0x1ce0 drivers/tty/n_tty.c:2140 b_state=0x00000029, b_size=1024 2 locks held by getty/5499: device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 #0: b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 000000007d681bb2 b_state=0x00000029, b_size=1024 ( device loop0 blocksize: 512 &tty->ldisc_sem __find_get_block_slow() failed. block=89, b_blocknr=44 ){++++} b_state=0x00000029, b_size=1024 , at: ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:353 device loop0 blocksize: 512 #1: __find_get_block_slow() failed. block=89, b_blocknr=44 000000006c9edb7c b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 ( b_state=0x00000029, b_size=1024 &ldata->atomic_read_lock device loop0 blocksize: 512 ){+.+.} __find_get_block_slow() failed. block=89, b_blocknr=44 b_state=0x00000029, b_size=1024 , at: n_tty_read+0x335/0x1ce0 drivers/tty/n_tty.c:2140 device loop0 blocksize: 512 2 locks held by getty/5500: __find_get_block_slow() failed. block=89, b_blocknr=44 #0: b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 000000004b8409ea __find_get_block_slow() failed. block=89, b_blocknr=44 ( b_state=0x00000029, b_size=1024 &tty->ldisc_sem device loop0 blocksize: 512 ){++++} __find_get_block_slow() failed. block=89, b_blocknr=44 , at: ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:353 b_state=0x00000029, b_size=1024 #1: 000000004e7b958c (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1ce0 drivers/tty/n_tty.c:2140 2 locks held by getty/5501: device loop0 blocksize: 512 #0: __find_get_block_slow() failed. block=89, b_blocknr=44 00000000908c08e1 b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 ( b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 &tty->ldisc_sem b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 ){++++} b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 , at: ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:353 __find_get_block_slow() failed. block=89, b_blocknr=44 #1: b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 000000005921203e __find_get_block_slow() failed. block=89, b_blocknr=44 ( b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 &ldata->atomic_read_lock b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 ){+.+.} b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 , at: n_tty_read+0x335/0x1ce0 drivers/tty/n_tty.c:2140 b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 2 locks held by getty/5502: b_state=0x00000029, b_size=1024 #0: device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 00000000a85965ec b_state=0x00000029, b_size=1024 ( device loop0 blocksize: 512 &tty->ldisc_sem __find_get_block_slow() failed. block=89, b_blocknr=44 ){++++} b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 , at: ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:353 b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 #1: b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 000000006a554e79 b_state=0x00000029, b_size=1024 ( device loop0 blocksize: 512 &ldata->atomic_read_lock __find_get_block_slow() failed. block=89, b_blocknr=44 ){+.+.} b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 , at: n_tty_read+0x335/0x1ce0 drivers/tty/n_tty.c:2140 b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 1 lock held by syz-executor0/13789: b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 #0: b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 000000002c42f159 b_state=0x00000029, b_size=1024 ( device loop0 blocksize: 512 &bdev->bd_mutex __find_get_block_slow() failed. block=89, b_blocknr=44 ){+.+.} b_state=0x00000029, b_size=1024 , at: blkdev_put+0x34/0x540 fs/block_dev.c:1816 4 locks held by syz-executor0/13794: device loop0 blocksize: 512 1 lock held by syz-executor0/13833: __find_get_block_slow() failed. block=89, b_blocknr=44 #0: b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 b_state=0x00000029, b_size=1024 000000002c42f159 device loop0 blocksize: 512 ( __find_get_block_slow() failed. block=89, b_blocknr=44 b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 &bdev->bd_mutex b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 ){+.+.} b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 , at: __blkdev_get+0x19b/0x13c0 fs/block_dev.c:1466 b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 1 lock held by blkid/13802: b_state=0x00000029, b_size=1024 #0: device loop0 blocksize: 512 000000002c42f159 __find_get_block_slow() failed. block=89, b_blocknr=44 ( b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 &bdev->bd_mutex b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 ){+.+.} b_state=0x00000029, b_size=1024 , at: blkdev_put+0x34/0x540 fs/block_dev.c:1816 3 locks held by syz-executor3/13808: device loop0 blocksize: 512 #0: __find_get_block_slow() failed. block=89, b_blocknr=44 00000000a7564295 b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 ( b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 &lo->lo_ctl_mutex b_state=0x00000029, b_size=1024 /1 device loop0 blocksize: 512 ){+.+.} __find_get_block_slow() failed. block=89, b_blocknr=44 , at: lo_ioctl+0x8e/0x1d80 drivers/block/loop.c:1403 b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 #1: b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 000000002c42f159 b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 ( b_state=0x00000029, b_size=1024 &bdev->bd_mutex device loop0 blocksize: 512 ){+.+.} __find_get_block_slow() failed. block=89, b_blocknr=44 , at: blkdev_reread_part+0x1e/0x40 block/ioctl.c:192 b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 #2: b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 00000000618ac24f b_state=0x00000029, b_size=1024 ( device loop0 blocksize: 512 &type->s_umount_key __find_get_block_slow() failed. block=89, b_blocknr=44 #66 b_state=0x00000029, b_size=1024 ){++++} device loop0 blocksize: 512 , at: __get_super.part.11+0x207/0x2e0 fs/super.c:698 __find_get_block_slow() failed. block=89, b_blocknr=44 1 lock held by syz-executor3/13836: b_state=0x00000029, b_size=1024 #0: device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 000000002c42f159 b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 ( b_state=0x00000029, b_size=1024 &bdev->bd_mutex device loop0 blocksize: 512 ){+.+.} __find_get_block_slow() failed. block=89, b_blocknr=44 , at: __blkdev_get+0x19b/0x13c0 fs/block_dev.c:1466 b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 ============================================= __find_get_block_slow() failed. block=89, b_blocknr=44 b_state=0x00000029, b_size=1024 NMI backtrace for cpu 0 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 CPU: 0 PID: 985 Comm: khungtaskd Not tainted 4.19.0-rc5+ #34 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+0x1c4/0x2b4 lib/dump_stack.c:113 b_state=0x00000029, b_size=1024 nmi_cpu_backtrace.cold.3+0x63/0xa2 lib/nmi_backtrace.c:101 device loop0 blocksize: 512 nmi_trigger_cpumask_backtrace+0x1b3/0x1ed lib/nmi_backtrace.c:62 __find_get_block_slow() failed. block=89, b_blocknr=44 arch_trigger_cpumask_backtrace+0x14/0x20 arch/x86/kernel/apic/hw_nmi.c:38 b_state=0x00000029, b_size=1024 trigger_all_cpu_backtrace include/linux/nmi.h:144 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:204 [inline] watchdog+0xb3e/0x1050 kernel/hung_task.c:265 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 b_state=0x00000029, b_size=1024 device loop0 blocksize: 512 __find_get_block_slow() failed. block=89, b_blocknr=44 kthread+0x35a/0x420 kernel/kthread.c:246 b_state=0x00000029, b_size=1024 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:413 device loop0 blocksize: 512 Sending NMI from CPU 0 to CPUs 1: __find_get_block_slow() failed. block=89, b_blocknr=44 NMI backtrace for cpu 1 CPU: 1 PID: 13794 Comm: syz-executor0 Not tainted 4.19.0-rc5+ #34 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:format_decode+0x138/0xaf0 lib/vsprintf.c:2029 Code: c0 f9 84 db 0f 84 6b 08 00 00 e8 93 34 c0 f9 89 de bf 25 00 00 00 e8 57 35 c0 f9 80 fb 25 0f 84 59 08 00 00 49 8d 5f 01 eb 20 73 34 c0 f9 44 89 e6 bf 25 00 00 00 48 83 c3 01 e8 32 35 c0 f9 RSP: 0018:ffff880182566e38 EFLAGS: 00000006 RAX: 0000000000000002 RBX: ffffffff882c31c9 RCX: ffffffff87beb009 RDX: 0000000000000030 RSI: 0000000000000000 RDI: 0000000000000001 RBP: ffff880182566ee0 R08: ffff8801825be340 R09: fffffbfff12f2bf4 R10: fffffbfff12f2bf4 R11: ffffffff89795fa3 R12: 0000000000000030 R13: ffff880182566f58 R14: ffff880182566eb8 R15: ffffffff882c31c9 FS: 00007fc0ae78c700(0000) GS:ffff8801dad00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffffffff600400 CR3: 00000001cb84f000 CR4: 00000000001406e0 Call Trace: vsnprintf+0x185/0x1b60 lib/vsprintf.c:2245 snprintf+0xae/0xe0 lib/vsprintf.c:2426 print_time kernel/printk/printk.c:1222 [inline] print_prefix+0x38e/0x3f0 kernel/printk/printk.c:1247 msg_print_text+0x83/0x1d0 kernel/printk/printk.c:1270 console_unlock+0x4d6/0x1160 kernel/printk/printk.c:2379 vprintk_emit+0x33d/0x930 kernel/printk/printk.c:1922 vprintk_default+0x28/0x30 kernel/printk/printk.c:1963 vprintk_func+0x7e/0x181 kernel/printk/printk_safe.c:398 printk+0xa7/0xcf kernel/printk/printk.c:1996 __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/0x300 fs/buffer.c:1354 sb_bread include/linux/buffer_head.h:307 [inline] minix_fill_super+0x979/0x1a80 fs/minix/inode.c:255 mount_bdev+0x30c/0x3e0 fs/super.c:1158 minix_mount+0x34/0x40 fs/minix/inode.c:656 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:2787 ksys_mount+0x12d/0x140 fs/namespace.c:3003 __do_sys_mount fs/namespace.c:3017 [inline] __se_sys_mount fs/namespace.c:3014 [inline] __x64_sys_mount+0xbe/0x150 fs/namespace.c:3014 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x459fea Code: b8 a6 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 9d 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 7a 89 fb ff c3 66 0f 1f 84 00 00 00 00 00 RSP: 002b:00007fc0ae78ba88 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007fc0ae78bb30 RCX: 0000000000459fea RDX: 00007fc0ae78bad0 RSI: 0000000020000080 RDI: 00007fc0ae78baf0 RBP: 0000000020000080 R08: 00007fc0ae78bb30 R09: 00007fc0ae78bad0 R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000004 R13: 0000000000000000 R14: 00000000004d7e30 R15: 00000000ffffffff INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 1.245 msecs