device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000029, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 INFO: task syz-executor0:7690 blocked for more than 140 seconds. b_state=0x00000029, b_size=4096 Not tainted 4.20.0-rc1-next-20181109+ #110 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-executor0 D23160 7690 6052 0x00000004 b_state=0x00000029, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 Call Trace: b_state=0x00000029, 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=0x00000029, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000029, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000029, b_size=4096 schedule+0xef/0x370 kernel/sched/core.c:3516 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000029, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000029, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000029, 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=0x00000029, 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=0x00000029, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000029, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000029, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000029, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000029, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000029, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000029, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000029, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000029, 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=0x00000029, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000029, b_size=4096 blkdev_put+0x34/0x540 fs/block_dev.c:1818 device loop0 blocksize: 2048 blkdev_close+0x8b/0xb0 fs/block_dev.c:1867 __find_get_block_slow() failed. block=1, b_blocknr=0 __fput+0x3bc/0xa70 fs/file_table.c:279 b_state=0x00000029, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000029, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000029, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000029, b_size=4096 ____fput+0x15/0x20 fs/file_table.c:312 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=0x00000029, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000029, 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=0x00000029, 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=0x00000029, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000029, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000029, 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=0x00000029, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 RIP: 0033:0x411021 b_state=0x00000029, 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:00007ffca4192ea0 EFLAGS: 00000293 ORIG_RAX: 0000000000000003 __find_get_block_slow() failed. block=1, b_blocknr=0 RAX: 0000000000000000 RBX: 0000000000000008 RCX: 0000000000411021 b_state=0x00000029, b_size=4096 RDX: 0000000000000000 RSI: 0000000000730c88 RDI: 0000000000000007 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 device loop0 blocksize: 2048 R10: 00007ffca4192dd0 R11: 0000000000000293 R12: 0000000000000000 R13: 0000000000000001 R14: 0000000000000006 R15: 0000000000000000 __find_get_block_slow() failed. block=1, b_blocknr=0 INFO: task syz-executor0:7726 blocked for more than 140 seconds. b_state=0x00000029, b_size=4096 Not tainted 4.20.0-rc1-next-20181109+ #110 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. device loop0 blocksize: 2048 syz-executor0 D22360 7726 6052 0x00000004 __find_get_block_slow() failed. block=1, b_blocknr=0 Call Trace: b_state=0x00000029, 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=0x00000029, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000029, b_size=4096 schedule+0xef/0x370 kernel/sched/core.c:3516 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000029, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000029, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000029, 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=0x00000029, 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=0x00000029, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000029, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000029, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000029, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000029, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000029, 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_get+0x19b/0x13b0 fs/block_dev.c:1468 b_state=0x00000029, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000029, b_size=4096 device loop0 blocksize: 2048 blkdev_get+0xc1/0xb50 fs/block_dev.c:1619 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000029, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000029, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000029, 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:1777 b_state=0x00000029, 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=0x00000029, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000029, 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=0x00000029, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000029, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000029, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000029, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000029, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000029, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000029, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000029, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000029, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000029, 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=0x00000029, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000029, 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=0x00000029, 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=0x00000029, 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=0x00000029, 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=0x00000029, 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:00007f5df0ac0a80 EFLAGS: 00000293 ORIG_RAX: 0000000000000002 b_state=0x00000029, b_size=4096 device loop0 blocksize: 2048 RAX: ffffffffffffffda RBX: 0000000020000228 RCX: 00000000004111a1 __find_get_block_slow() failed. block=1, b_blocknr=0 RDX: 00007f5df0ac0afa RSI: 0000000000000002 RDI: 00007f5df0ac0af0 b_state=0x00000029, b_size=4096 RBP: 0000000000000001 R08: 0000000000000000 R09: 000000000000000a device loop0 blocksize: 2048 R10: 0000000000000075 R11: 0000000000000293 R12: 000000000000000b __find_get_block_slow() failed. block=1, b_blocknr=0 R13: 0000000000000001 R14: 00000000004d8f68 R15: 00000000ffffffff b_state=0x00000029, b_size=4096 INFO: task syz-executor5:7706 blocked for more than 140 seconds. device loop0 blocksize: 2048 Not tainted 4.20.0-rc1-next-20181109+ #110 __find_get_block_slow() failed. block=1, b_blocknr=0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor5 D23736 7706 6223 0x00000004 b_state=0x00000029, b_size=4096 Call Trace: 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=0x00000029, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000029, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000029, b_size=4096 device loop0 blocksize: 2048 syz-executor0(7699): getblk(): executed=9 bh_count=0 bh_state=0 schedule+0xef/0x370 kernel/sched/core.c:3516 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000029, b_size=4096 device loop0 blocksize: 2048 __rwsem_down_read_failed_common kernel/locking/rwsem-xadd.c:280 [inline] rwsem_down_read_failed+0x371/0x710 kernel/locking/rwsem-xadd.c:297 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000029, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000029, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000029, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000029, b_size=4096 device loop0 blocksize: 2048 call_rwsem_down_read_failed+0x18/0x30 arch/x86/lib/rwsem.S:94 __find_get_block_slow() failed. block=1, b_blocknr=0 __down_read arch/x86/include/asm/rwsem.h:83 [inline] down_read+0x9b/0x120 kernel/locking/rwsem.c:26 b_state=0x00000029, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000029, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000029, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000029, 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:789 b_state=0x00000029, b_size=4096 __get_super include/linux/spinlock.h:329 [inline] get_super+0x2d/0x50 fs/super.c:818 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 fsync_bdev+0x17/0xc0 fs/block_dev.c:471 b_state=0x00000029, 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=0x00000029, 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=0x00000029, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 __blkdev_reread_part+0x1ad/0x230 block/ioctl.c:173 b_state=0x00000029, b_size=4096 blkdev_reread_part+0x26/0x40 block/ioctl.c:193 device loop0 blocksize: 2048 loop_reread_partitions+0x1c/0x40 drivers/block/loop.c:633 __find_get_block_slow() failed. block=1, b_blocknr=0 loop_set_status+0xcd8/0x10e0 drivers/block/loop.c:1268 b_state=0x00000029, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 loop_set_status64+0xaa/0x100 drivers/block/loop.c:1388 b_state=0x00000029, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000029, b_size=4096 lo_ioctl+0x904/0x22a0 drivers/block/loop.c:1514 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000029, 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=0x00000029, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000029, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000029, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000029, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000029, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000029, b_size=4096 device loop0 blocksize: 2048 block_ioctl+0xee/0x130 fs/block_dev.c:1885 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000029, 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=0x00000029, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000029, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000029, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000029, 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=0x00000029, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 __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 b_state=0x00000029, b_size=4096 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=0x00000029, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000029, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000029, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000029, 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=0x00000029, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 RIP: 0033:0x457569 b_state=0x00000029, b_size=4096 device loop0 blocksize: 2048 Code: 83 c4 18 c3 e8 d8 64 00 00 48 8b 04 24 48 8b 4c 24 08 48 89 01 e8 d7 2d fc ff e8 22 7a fc ff b8 02 00 00 00 48 8d 0d aa 3c 0c <01> 87 01 8b 05 a2 3c 0c 01 83 f8 01 0f 85 8a 00 00 00 b8 01 00 00 __find_get_block_slow() failed. block=1, b_blocknr=0 RSP: 002b:00007fe73ec6ac78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 b_state=0x00000029, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000457569 b_state=0x00000029, b_size=4096 RDX: 0000000020000380 RSI: 0000000000004c04 RDI: 0000000000000003 RBP: 000000000072bf00 R08: 0000000000000000 R09: 0000000000000000 device loop0 blocksize: 2048 R10: 0000000000000000 R11: 0000000000000246 R12: 00007fe73ec6b6d4 R13: 00000000004c07a8 R14: 00000000004d1288 R15: 00000000ffffffff __find_get_block_slow() failed. block=1, b_blocknr=0 INFO: task blkid:7712 blocked for more than 140 seconds. b_state=0x00000029, b_size=4096 Not tainted 4.20.0-rc1-next-20181109+ #110 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. device loop0 blocksize: 2048 blkid D23768 7712 7705 0x00000004 __find_get_block_slow() failed. block=1, b_blocknr=0 Call Trace: b_state=0x00000029, 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=0x00000029, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000029, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000029, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 schedule+0xef/0x370 kernel/sched/core.c:3516 b_state=0x00000029, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000029, 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=0x00000029, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000029, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000029, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000029, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000029, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000029, 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=0x00000029, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000029, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 __blkdev_get+0x19b/0x13b0 fs/block_dev.c:1468 b_state=0x00000029, b_size=4096 device loop0 blocksize: 2048 blkdev_get+0xc1/0xb50 fs/block_dev.c:1619 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000029, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000029, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000029, b_size=4096 device loop0 blocksize: 2048 blkdev_open+0x1fb/0x280 fs/block_dev.c:1777 __find_get_block_slow() failed. block=1, b_blocknr=0 do_dentry_open+0x499/0x1250 fs/open.c:771 b_state=0x00000029, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000029, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000029, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000029, b_size=4096 device loop0 blocksize: 2048 vfs_open+0xa0/0xd0 fs/open.c:880 __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=0x00000029, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000029, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000029, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000029, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000029, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000029, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000029, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000029, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000029, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000029, 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=0x00000029, 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=0x00000029, 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=0x00000029, b_size=4096 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=0x00000029, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000029, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000029, b_size=4096 entry_SYSCALL_64_after_hwframe+0x49/0xbe device loop0 blocksize: 2048 RIP: 0033:0x7f54b2f17120 __find_get_block_slow() failed. block=1, b_blocknr=0 Code: Bad RIP value. b_state=0x00000029, b_size=4096 RSP: 002b:00007ffc130800d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000002 device loop0 blocksize: 2048 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f54b2f17120 RDX: 00007ffc13080f41 RSI: 0000000000000000 RDI: 00007ffc13080f41 RBP: 0000000000000000 R08: 0000000000000078 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000001ac9030 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000005 Showing all locks held in the system: __find_get_block_slow() failed. block=1, b_blocknr=0 1 lock held by khungtaskd/1010: b_state=0x00000029, b_size=4096 #0: 0000000026dd279f (rcu_read_lock){....}, at: debug_show_all_locks+0xd0/0x424 kernel/locking/lockdep.c:4379 device loop0 blocksize: 2048 1 lock held by rsyslogd/5921: __find_get_block_slow() failed. block=1, b_blocknr=0 #0: 0000000044f65e72 (&f->f_pos_lock){+.+.}, at: __fdget_pos+0x1bb/0x200 fs/file.c:766 b_state=0x00000029, b_size=4096 2 locks held by getty/6011: device loop0 blocksize: 2048 #0: 00000000d365cb9d (&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: 000000008a0ff03d (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1e80 drivers/tty/n_tty.c:2154 b_state=0x00000029, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 2 locks held by getty/6012: b_state=0x00000029, b_size=4096 #0: 0000000062f5f64b (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:353 device loop0 blocksize: 2048 #1: 00000000ad2bf102 (&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/6013: b_state=0x00000029, b_size=4096 #0: 000000000bc87456 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:353 device loop0 blocksize: 2048 #1: 00000000c86bb597 (&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/6014: b_state=0x00000029, b_size=4096 #0: 0000000006582fc4 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:353 device loop0 blocksize: 2048 #1: 0000000002aa4e94 (&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/6015: b_state=0x00000029, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 #0: 000000009c7fbece (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:353 b_state=0x00000029, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 #1: 0000000011ca3b81 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1e80 drivers/tty/n_tty.c:2154 b_state=0x00000029, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 2 locks held by getty/6016: b_state=0x00000029, b_size=4096 #0: 00000000f94510ea (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:353 device loop0 blocksize: 2048 #1: 0000000064ab94e2 (&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/6017: b_state=0x00000029, b_size=4096 device loop0 blocksize: 2048 #0: 00000000efe03cc6 (&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: 00000000aa3aff3c (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1e80 drivers/tty/n_tty.c:2154 b_state=0x00000029, b_size=4096 1 lock held by syz-executor0/7690: device loop0 blocksize: 2048 #0: 000000002c663d97 (&bdev->bd_mutex){+.+.}, at: blkdev_put+0x34/0x540 fs/block_dev.c:1818 __find_get_block_slow() failed. block=1, b_blocknr=0 5 locks held by syz-executor0/7699: b_state=0x00000029, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 1 lock held by syz-executor0/7726: b_state=0x00000029, b_size=4096 device loop0 blocksize: 2048 #0: 000000002c663d97 (&bdev->bd_mutex){+.+.}, at: __blkdev_get+0x19b/0x13b0 fs/block_dev.c:1468 __find_get_block_slow() failed. block=1, b_blocknr=0 2 locks held by syz-executor5/7706: b_state=0x00000029, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 #0: 000000002c663d97 (&bdev->bd_mutex){+.+.}, at: blkdev_reread_part+0x1e/0x40 block/ioctl.c:192 b_state=0x00000029, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 #1: 00000000b2dc103b (&fc->fs_type->s_umount_key#46){.+.+}, at: __get_super.part.11+0x207/0x2e0 fs/super.c:789 b_state=0x00000029, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 1 lock held by blkid/7712: b_state=0x00000029, b_size=4096 #0: 000000002c663d97 (&bdev->bd_mutex){+.+.}, at: __blkdev_get+0x19b/0x13b0 fs/block_dev.c:1468 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 ============================================= NMI backtrace for cpu 0 b_state=0x00000029, b_size=4096 CPU: 0 PID: 1010 Comm: khungtaskd Not tainted 4.20.0-rc1-next-20181109+ #110 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 device loop0 blocksize: 2048 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x244/0x39d lib/dump_stack.c:113 __find_get_block_slow() failed. block=1, b_blocknr=0 nmi_cpu_backtrace.cold.2+0x5c/0xa1 lib/nmi_backtrace.c:101 b_state=0x00000029, b_size=4096 device loop0 blocksize: 2048 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=0x00000029, b_size=4096 trigger_all_cpu_backtrace include/linux/nmi.h:144 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:205 [inline] watchdog+0xb4c/0x1060 kernel/hung_task.c:289 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000029, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000029, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000029, b_size=4096 kthread+0x35a/0x440 kernel/kthread.c:246 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:352 Sending NMI from CPU 0 to CPUs 1: device loop0 blocksize: 2048 INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 1.703 msecs NMI backtrace for cpu 1 CPU: 1 PID: 7699 Comm: syz-executor0 Not tainted 4.20.0-rc1-next-20181109+ #110 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:mark_held_locks+0x85/0x130 kernel/locking/lockdep.c:2725 Code: 31 db 49 bf 00 00 00 00 00 fc ff df 41 8d 44 24 02 89 45 d4 41 8d 44 24 03 89 45 d0 4d 8d a6 80 08 00 00 49 c1 ed 03 4d 01 fd <48> 63 c3 48 8d 04 80 49 8d 34 c4 48 8d 7e 22 48 89 f8 48 89 fa 48 RSP: 0018:ffff88017debeb50 EFLAGS: 00000002 RAX: 0000000000000000 RBX: 0000000000000001 RCX: 1ffff10037f715ec RDX: 1ffffffff15919ae RSI: 0000000000000000 RDI: ffffffff8ac8cd70 RBP: ffff88017debeb90 R08: ffff8801bfb8af60 R09: 0000000000000006 R10: 0000000000000000 R11: ffff8801bfb8a6c0 R12: ffff8801bfb8af40 R13: ffffed0037f715e7 R14: ffff8801bfb8a6c0 R15: dffffc0000000000 FS: 00007f5df0ae2700(0000) GS:ffff8801daf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffffffff600400 CR3: 00000001cea15000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __trace_hardirqs_on_caller kernel/locking/lockdep.c:2766 [inline] lockdep_hardirqs_on+0x3bb/0x5b0 kernel/locking/lockdep.c:2811 trace_hardirqs_on_caller+0xc0/0x310 kernel/trace/trace_preemptirq.c:56 trace_hardirqs_on_thunk+0x1a/0x1c retint_kernel+0x2d/0x2d RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:761 [inline] RIP: 0010:console_trylock_spinning kernel/printk/printk.c:1688 [inline] RIP: 0010:vprintk_emit+0x87d/0x990 kernel/printk/printk.c:1921 Code: 00 fc ff df 48 c1 e8 03 80 3c 10 00 0f 85 de 00 00 00 48 83 3d 73 69 ec 07 00 74 34 e8 6c 16 1a 00 48 8b bd 90 fe ff ff 57 9d <0f> 1f 44 00 00 e9 aa fe ff ff e8 54 16 1a 00 0f 0b e8 4d 16 1a 00 RSP: 0018:ffff88017debed70 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 RAX: 0000000000040000 RBX: 1ffff1002fbd7db4 RCX: ffffc90005fde000 RDX: 0000000000040000 RSI: ffffffff81659244 RDI: 0000000000000246 RBP: ffff88017debeee8 R08: ffff8801bfb8af88 R09: 0000000000000006 R10: 0000000000000000 R11: ffff8801bfb8a6c0 R12: 0000000000000200 R13: 0000000000000000 R14: ffffed002fbd7dc8 R15: ffff88017debeec0 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:237 [inline] __find_get_block.cold.58+0xd8/0xff fs/buffer.c:1325 __getblk_slow fs/buffer.c:1058 [inline] __getblk_gfp+0x3d3/0x1030 fs/buffer.c:1351 __bread_gfp+0x2d/0x310 fs/buffer.c:1385 sb_bread include/linux/buffer_head.h:307 [inline] read_raw_super_block fs/f2fs/super.c:2831 [inline] f2fs_fill_super+0x440/0x8a20 fs/f2fs/super.c:3060 mount_bdev+0x314/0x3e0 fs/super.c:1356 f2fs_mount+0x3c/0x50 fs/f2fs/super.c:3459 legacy_get_tree+0x12f/0x260 fs/fs_context.c:714 vfs_get_tree+0x1cb/0x5c0 fs/super.c:1795 do_new_mount fs/namespace.c:2716 [inline] do_mount+0x82a/0x1ff0 fs/namespace.c:3042 ksys_mount+0x12d/0x140 fs/namespace.c:3258 __do_sys_mount fs/namespace.c:3272 [inline] __se_sys_mount fs/namespace.c:3269 [inline] __x64_sys_mount+0xbe/0x150 fs/namespace.c:3269 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:00007f5df0ae1a88 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007f5df0ae1b30 RCX: 0000000000459fda RDX: 00007f5df0ae1ad0 RSI: 0000000020000340 RDI: 00007f5df0ae1af0 RBP: 0000000020000340 R08: 00007f5df0ae1b30 R09: 00007f5df0ae1ad0 R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000006 R13: 0000000000000000 R14: 00000000004d8f68 R15: 00000000ffffffff