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-executor0:2185 blocked for more than 140 seconds. __find_get_block_slow() failed. block=1, b_blocknr=0 Not tainted 4.20.0-rc5+ #141 b_state=0x00000028, b_size=4096 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. device loop0 blocksize: 2048 syz-executor0 D18616 2185 1 0x00000004 __find_get_block_slow() failed. block=1, b_blocknr=0 Call Trace: b_state=0x00000028, b_size=4096 context_switch kernel/sched/core.c:2831 [inline] __schedule+0x8cf/0x21d0 kernel/sched/core.c:3472 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000028, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000028, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000028, b_size=4096 schedule+0xfe/0x460 kernel/sched/core.c:3516 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000028, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000028, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000028, b_size=4096 device loop0 blocksize: 2048 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3574 __find_get_block_slow() failed. block=1, b_blocknr=0 __mutex_lock_common kernel/locking/mutex.c:1002 [inline] __mutex_lock+0xaff/0x16f0 kernel/locking/mutex.c:1072 b_state=0x00000028, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000028, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000028, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000028, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000028, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000028, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000028, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000028, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000028, b_size=4096 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 __blkdev_get+0x19b/0x13c0 fs/block_dev.c:1466 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 blkdev_get+0xc1/0xb50 fs/block_dev.c:1617 b_state=0x00000028, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000028, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000028, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000028, b_size=4096 blkdev_open+0x1fb/0x280 fs/block_dev.c:1775 device loop0 blocksize: 2048 do_dentry_open+0x499/0x1250 fs/open.c:771 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000028, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000028, b_size=4096 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=0x00000028, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000028, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000028, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000028, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000028, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000028, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000028, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000028, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 do_filp_open+0x255/0x380 fs/namei.c:3564 b_state=0x00000028, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000028, b_size=4096 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 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000028, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 __do_sys_open fs/open.c:1081 [inline] __se_sys_open fs/open.c:1076 [inline] __x64_sys_open+0x7e/0xc0 fs/open.c:1076 b_state=0x00000028, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290 b_state=0x00000028, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000028, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000028, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000028, b_size=4096 device loop0 blocksize: 2048 entry_SYSCALL_64_after_hwframe+0x49/0xbe __find_get_block_slow() failed. block=1, b_blocknr=0 RIP: 0033:0x411180 b_state=0x00000028, b_size=4096 Code: 40 00 b9 e0 94 65 00 ba c4 31 44 00 be c6 31 44 00 bf bc 31 44 00 ff 15 f6 80 24 00 85 c0 41 89 c6 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 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 RSP: 002b:00007ffcc20bde88 EFLAGS: 00000246 ORIG_RAX: 0000000000000002 b_state=0x00000028, b_size=4096 device loop0 blocksize: 2048 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000411180 __find_get_block_slow() failed. block=1, b_blocknr=0 RDX: 00007ffcc20bdefa RSI: 0000000000000002 RDI: 00007ffcc20bdef0 b_state=0x00000028, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 RBP: 000000000000014d R08: 0000000000000000 R09: 000000000000000a b_state=0x00000028, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 R10: 0000000000000075 R11: 0000000000000246 R12: 000000000000000f b_state=0x00000028, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 R13: 000000000013a0e8 R14: 0000000000000013 R15: 0000000000000000 b_state=0x00000028, b_size=4096 INFO: task syz-executor5:3427 blocked for more than 140 seconds. device loop0 blocksize: 2048 Not tainted 4.20.0-rc5+ #141 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor5 D23832 3427 16753 0x00000004 __find_get_block_slow() failed. block=1, b_blocknr=0 Call Trace: b_state=0x00000028, b_size=4096 context_switch kernel/sched/core.c:2831 [inline] __schedule+0x8cf/0x21d0 kernel/sched/core.c:3472 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000028, b_size=4096 device loop0 blocksize: 2048 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 __find_get_block_slow() failed. block=1, b_blocknr=0 __rwsem_down_read_failed_common kernel/locking/rwsem-xadd.c:280 [inline] rwsem_down_read_failed+0x371/0x710 kernel/locking/rwsem-xadd.c:297 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 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=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 __get_super.part.11+0x207/0x2e0 fs/super.c:698 __find_get_block_slow() failed. block=1, b_blocknr=0 __get_super include/linux/spinlock.h:329 [inline] get_super+0x2d/0x50 fs/super.c:727 b_state=0x00000028, b_size=4096 fsync_bdev+0x17/0xc0 fs/block_dev.c:469 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 invalidate_partition+0x35/0x60 block/genhd.c:1570 b_state=0x00000028, b_size=4096 device loop0 blocksize: 2048 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 b_state=0x00000028, b_size=4096 device loop0 blocksize: 2048 rescan_partitions+0x72/0x8e0 block/partition-generic.c:518 __find_get_block_slow() failed. block=1, b_blocknr=0 __blkdev_reread_part+0x1ad/0x230 block/ioctl.c:173 b_state=0x00000028, b_size=4096 blkdev_reread_part+0x26/0x40 block/ioctl.c:193 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 loop_reread_partitions+0x163/0x190 drivers/block/loop.c:644 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 lo_ioctl+0x90e/0x1d60 drivers/block/loop.c:1432 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000028, b_size=4096 __blkdev_driver_ioctl block/ioctl.c:303 [inline] blkdev_ioctl+0x98e/0x21b0 block/ioctl.c:605 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 block_ioctl+0xee/0x130 fs/block_dev.c:1883 b_state=0x00000028, b_size=4096 device loop0 blocksize: 2048 vfs_ioctl fs/ioctl.c:46 [inline] file_ioctl fs/ioctl.c:509 [inline] do_vfs_ioctl+0x1de/0x1790 fs/ioctl.c:696 __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 ksys_ioctl+0xa9/0xd0 fs/ioctl.c:713 __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=0x00000028, b_size=4096 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000028, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000028, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000028, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 entry_SYSCALL_64_after_hwframe+0x49/0xbe b_state=0x00000028, b_size=4096 RIP: 0033:0x457569 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 Code: Bad RIP value. b_state=0x00000028, b_size=4096 RSP: 002b:00007fde2fd47c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000457569 b_state=0x00000028, b_size=4096 RDX: 0000000020000380 RSI: 0000000000004c04 RDI: 0000000000000004 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 RBP: 000000000072bfa0 R08: 0000000000000000 R09: 0000000000000000 b_state=0x00000028, b_size=4096 R10: 0000000000000000 R11: 0000000000000246 R12: 00007fde2fd486d4 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 R13: 00000000004c07a8 R14: 00000000004d10e8 R15: 00000000ffffffff b_state=0x00000028, b_size=4096 INFO: task blkid:3428 blocked for more than 140 seconds. device loop0 blocksize: 2048 Not tainted 4.20.0-rc5+ #141 __find_get_block_slow() failed. block=1, b_blocknr=0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. b_state=0x00000028, b_size=4096 blkid D21080 3428 1593 0x00000004 device loop0 blocksize: 2048 Call Trace: __find_get_block_slow() failed. block=1, b_blocknr=0 context_switch kernel/sched/core.c:2831 [inline] __schedule+0x8cf/0x21d0 kernel/sched/core.c:3472 b_state=0x00000028, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000028, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000028, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000028, b_size=4096 schedule+0xfe/0x460 kernel/sched/core.c:3516 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000028, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000028, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000028, b_size=4096 device loop0 blocksize: 2048 __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 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1087 __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 blkdev_get+0xc1/0xb50 fs/block_dev.c:1617 __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 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 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000028, b_size=4096 do_filp_open+0x255/0x380 fs/namei.c:3564 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000028, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 do_sys_open+0x568/0x700 fs/open.c:1063 b_state=0x00000028, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 __do_sys_open fs/open.c:1081 [inline] __se_sys_open fs/open.c:1076 [inline] __x64_sys_open+0x7e/0xc0 fs/open.c:1076 b_state=0x00000028, b_size=4096 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000028, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 b_state=0x00000028, b_size=4096 device loop0 blocksize: 2048 entry_SYSCALL_64_after_hwframe+0x49/0xbe __find_get_block_slow() failed. block=1, b_blocknr=0 RIP: 0033:0x7f040631e120 b_state=0x00000028, b_size=4096 Code: Bad RIP value. device loop0 blocksize: 2048 RSP: 002b:00007ffe55d828c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000002 __find_get_block_slow() failed. block=1, b_blocknr=0 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f040631e120 b_state=0x00000028, b_size=4096 RDX: 00007ffe55d84f3f RSI: 0000000000000000 RDI: 00007ffe55d84f3f device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 RBP: 0000000000000000 R08: 0000000000000078 R09: 0000000000000000 b_state=0x00000028, b_size=4096 device loop0 blocksize: 2048 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000001ae5030 __find_get_block_slow() failed. block=1, b_blocknr=0 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000005 b_state=0x00000028, b_size=4096 Showing all locks held in the system: device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 1 lock held by khungtaskd/1018: b_state=0x00000028, b_size=4096 #0: 000000007dca9073 (rcu_read_lock){....}, at: debug_show_all_locks+0xd0/0x424 kernel/locking/lockdep.c:4379 device loop0 blocksize: 2048 1 lock held by rsyslogd/5940: __find_get_block_slow() failed. block=1, b_blocknr=0 #0: 00000000ed6f9b1e (&f->f_pos_lock){+.+.}, at: __fdget_pos+0x1bb/0x200 fs/file.c:766 b_state=0x00000028, b_size=4096 2 locks held by getty/6030: device loop0 blocksize: 2048 #0: 00000000e355477b (&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: 000000003d16ea1d (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1e80 drivers/tty/n_tty.c:2154 b_state=0x00000028, b_size=4096 2 locks held by getty/6031: device loop0 blocksize: 2048 #0: 00000000fa1be622 (&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: 000000004f38fd42 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1e80 drivers/tty/n_tty.c:2154 b_state=0x00000028, b_size=4096 2 locks held by getty/6032: device loop0 blocksize: 2048 #0: 00000000e7bf7cdb (&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: 0000000074452bf7 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1e80 drivers/tty/n_tty.c:2154 b_state=0x00000028, b_size=4096 2 locks held by getty/6033: #0: 000000004883d069 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:353 device loop0 blocksize: 2048 #1: 00000000474a092c (&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/6034: b_state=0x00000028, b_size=4096 #0: 000000008b99dec4 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:353 device loop0 blocksize: 2048 #1: 00000000591063d0 (&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/6035: b_state=0x00000028, b_size=4096 #0: 0000000037f97d8b (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:353 device loop0 blocksize: 2048 #1: 000000008f23c4ef (&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/6036: b_state=0x00000028, b_size=4096 device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 #0: 000000003558a1f8 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:353 b_state=0x00000028, b_size=4096 #1: 00000000e7125da0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1e80 drivers/tty/n_tty.c:2154 device loop0 blocksize: 2048 1 lock held by syz-executor0/2185: __find_get_block_slow() failed. block=1, b_blocknr=0 #0: 00000000908c141d (&bdev->bd_mutex){+.+.}, at: __blkdev_get+0x19b/0x13c0 fs/block_dev.c:1466 b_state=0x00000028, b_size=4096 3 locks held by syz-executor5/3427: device loop0 blocksize: 2048 #0: 00000000ccbe2874 (&lo->lo_ctl_mutex/1){+.+.}, at: lo_ioctl+0x8e/0x1d60 drivers/block/loop.c:1402 __find_get_block_slow() failed. block=1, b_blocknr=0 #1: 00000000908c141d (&bdev->bd_mutex){+.+.}, at: blkdev_reread_part+0x1e/0x40 block/ioctl.c:192 b_state=0x00000028, b_size=4096 #2: 00000000e81a82ed (&type->s_umount_key#86){.+.+}, at: __get_super.part.11+0x207/0x2e0 fs/super.c:698 device loop0 blocksize: 2048 5 locks held by syz-executor0/3416: __find_get_block_slow() failed. block=1, b_blocknr=0 1 lock held by blkid/3428: b_state=0x00000028, b_size=4096 device loop0 blocksize: 2048 #0: 00000000908c141d (&bdev->bd_mutex){+.+.}, at: __blkdev_get+0x19b/0x13c0 fs/block_dev.c:1466 __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: 1018 Comm: khungtaskd Not tainted 4.20.0-rc5+ #141 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 b_state=0x00000028, b_size=4096 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x244/0x39d lib/dump_stack.c:113 device loop0 blocksize: 2048 nmi_cpu_backtrace.cold.2+0x5c/0xa1 lib/nmi_backtrace.c:101 nmi_trigger_cpumask_backtrace+0x1e8/0x22a lib/nmi_backtrace.c:62 __find_get_block_slow() failed. block=1, b_blocknr=0 arch_trigger_cpumask_backtrace+0x14/0x20 arch/x86/kernel/apic/hw_nmi.c:38 trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:205 [inline] watchdog+0xb51/0x1060 kernel/hung_task.c:289 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 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: device loop0 blocksize: 2048 __find_get_block_slow() failed. block=1, b_blocknr=0 INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 1.694 msecs NMI backtrace for cpu 0 CPU: 0 PID: 3416 Comm: syz-executor0 Not tainted 4.20.0-rc5+ #141 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:__wrmsr arch/x86/include/asm/msr.h:105 [inline] RIP: 0010:native_write_msr+0xa/0x30 arch/x86/include/asm/msr.h:162 Code: 5d c3 0f 21 c8 5d c3 0f 21 d0 5d c3 0f 21 d8 5d c3 0f 21 f0 5d c3 0f 0b 0f 1f 84 00 00 00 00 00 55 89 f9 89 f0 48 89 e5 0f 30 <0f> 1f 44 00 00 5d c3 48 c1 e2 20 89 f6 48 09 d6 31 d2 e8 bf b5 6f RSP: 0018:ffff8881dae07d30 EFLAGS: 00000046 RAX: 0000000000076aba RBX: 0000000000000838 RCX: 0000000000000838 RDX: 0000000000000000 RSI: 0000000000076aba RDI: 0000000000000838 RBP: ffff8881dae07d30 R08: ffff8881c1bca300 R09: 000000000000000e R10: fffffbfff14a7201 R11: 0000000000000001 R12: 0000000000076aba R13: 0000000000000000 R14: 0000000000000000 R15: 7fffffffffffffff FS: 00007f6942051700(0000) GS:ffff8881dae00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffffffff600400 CR3: 00000001ba851000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: paravirt_write_msr arch/x86/include/asm/paravirt.h:174 [inline] native_apic_msr_write+0x5a/0x80 arch/x86/include/asm/apic.h:209 apic_write arch/x86/include/asm/apic.h:397 [inline] lapic_next_event+0x5a/0x90 arch/x86/kernel/apic/apic.c:466 clockevents_program_event+0x251/0x370 kernel/time/clockevents.c:344 tick_program_event+0xb7/0x130 kernel/time/tick-oneshot.c:48 hrtimer_interrupt+0x368/0x780 kernel/time/hrtimer.c:1531 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1034 [inline] smp_apic_timer_interrupt+0x1a1/0x760 arch/x86/kernel/apic/apic.c:1059 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:804 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 e3 2c ec 07 00 74 34 e8 ac c7 19 00 48 8b bd 90 fe ff ff 57 9d <0f> 1f 44 00 00 e9 aa fe ff ff e8 94 c7 19 00 0f 0b e8 8d c7 19 00 RSP: 0018:ffff888182456d00 EFLAGS: 00000293 ORIG_RAX: ffffffffffffff13 RAX: ffff8881c1bca300 RBX: 1ffff1103048ada6 RCX: 1ffff11038379579 RDX: 0000000000000000 RSI: ffffffff8165d414 RDI: 0000000000000293 RBP: ffff888182456e78 R08: ffff8881c1bcabc8 R09: 0000000000000006 R10: 0000000000000000 R11: ffff8881c1bca300 R12: 0000000000000200 R13: 0000000000000000 R14: ffffed103048adba R15: ffff888182456e50 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:2469 [inline] do_mount+0x581/0x31f0 fs/namespace.c:2801 ksys_mount+0x12d/0x140 fs/namespace.c:3017 __do_sys_mount fs/namespace.c:3031 [inline] __se_sys_mount fs/namespace.c:3028 [inline] __x64_sys_mount+0xbe/0x150 fs/namespace.c:3028 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:00007f6942050a88 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007f6942050b30 RCX: 0000000000459fda RDX: 00007f6942050ad0 RSI: 0000000020000340 RDI: 00007f6942050af0 RBP: 0000000020000340 R08: 00007f6942050b30 R09: 00007f6942050ad0 R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000005 R13: 0000000000000000 R14: 00000000004d8be8 R15: 00000000ffffffff