__find_get_block_slow() failed. block=1, b_blocknr=8 b_state=0x00000029, b_size=512 device loop0 blocksize: 4096 __find_get_block_slow() failed. block=1, b_blocknr=8 b_state=0x00000029, b_size=512 INFO: task syz-executor0:14011 blocked for more than 140 seconds. device loop0 blocksize: 4096 Not tainted 5.0.0-rc1+ #14 __find_get_block_slow() failed. block=1, b_blocknr=8 b_state=0x00000029, b_size=512 device loop0 blocksize: 4096 __find_get_block_slow() failed. block=1, b_blocknr=8 b_state=0x00000029, b_size=512 device loop0 blocksize: 4096 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. __find_get_block_slow() failed. block=1, b_blocknr=8 syz-executor0 D25592 14011 8551 0x00000004 b_state=0x00000029, b_size=512 Call Trace: device loop0 blocksize: 4096 context_switch kernel/sched/core.c:2831 [inline] __schedule+0x897/0x1e60 kernel/sched/core.c:3472 __find_get_block_slow() failed. block=1, b_blocknr=8 b_state=0x00000029, b_size=512 device loop0 blocksize: 4096 __find_get_block_slow() failed. block=1, b_blocknr=8 b_state=0x00000029, b_size=512 device loop0 blocksize: 4096 __find_get_block_slow() failed. block=1, b_blocknr=8 schedule+0xfe/0x350 kernel/sched/core.c:3516 b_state=0x00000029, b_size=512 device loop0 blocksize: 4096 __find_get_block_slow() failed. block=1, b_blocknr=8 __rwsem_down_read_failed_common kernel/locking/rwsem-xadd.c:280 [inline] rwsem_down_read_failed+0x360/0x6d0 kernel/locking/rwsem-xadd.c:297 b_state=0x00000029, b_size=512 device loop0 blocksize: 4096 __find_get_block_slow() failed. block=1, b_blocknr=8 b_state=0x00000029, b_size=512 device loop0 blocksize: 4096 __find_get_block_slow() failed. block=1, b_blocknr=8 b_state=0x00000029, b_size=512 call_rwsem_down_read_failed+0x18/0x30 arch/x86/lib/rwsem.S:94 device loop0 blocksize: 4096 __down_read arch/x86/include/asm/rwsem.h:83 [inline] down_read+0x9b/0x120 kernel/locking/rwsem.c:26 __find_get_block_slow() failed. block=1, b_blocknr=8 b_state=0x00000029, b_size=512 device loop0 blocksize: 4096 __find_get_block_slow() failed. block=1, b_blocknr=8 b_state=0x00000029, b_size=512 device loop0 blocksize: 4096 __find_get_block_slow() failed. block=1, b_blocknr=8 b_state=0x00000029, b_size=512 device loop0 blocksize: 4096 __find_get_block_slow() failed. block=1, b_blocknr=8 b_state=0x00000029, b_size=512 device loop0 blocksize: 4096 __find_get_block_slow() failed. block=1, b_blocknr=8 b_state=0x00000029, b_size=512 device loop0 blocksize: 4096 __find_get_block_slow() failed. block=1, b_blocknr=8 b_state=0x00000029, b_size=512 device loop0 blocksize: 4096 __find_get_block_slow() failed. block=1, b_blocknr=8 b_state=0x00000029, b_size=512 device loop0 blocksize: 4096 __find_get_block_slow() failed. block=1, b_blocknr=8 b_state=0x00000029, b_size=512 device loop0 blocksize: 4096 inode_lock_shared include/linux/fs.h:767 [inline] lookup_slow+0x4a/0x80 fs/namei.c:1687 __find_get_block_slow() failed. block=1, b_blocknr=8 b_state=0x00000029, b_size=512 device loop0 blocksize: 4096 __find_get_block_slow() failed. block=1, b_blocknr=8 walk_component+0x8e5/0x26a0 fs/namei.c:1810 b_state=0x00000029, b_size=512 device loop0 blocksize: 4096 __find_get_block_slow() failed. block=1, b_blocknr=8 b_state=0x00000029, b_size=512 device loop0 blocksize: 4096 __find_get_block_slow() failed. block=1, b_blocknr=8 b_state=0x00000029, b_size=512 device loop0 blocksize: 4096 link_path_walk.part.0+0xa57/0x1550 fs/namei.c:2141 __find_get_block_slow() failed. block=1, b_blocknr=8 b_state=0x00000029, b_size=512 device loop0 blocksize: 4096 __find_get_block_slow() failed. block=1, b_blocknr=8 b_state=0x00000029, b_size=512 device loop0 blocksize: 4096 __find_get_block_slow() failed. block=1, b_blocknr=8 link_path_walk fs/namei.c:2072 [inline] path_parentat.isra.0+0x51/0x160 fs/namei.c:2366 b_state=0x00000029, b_size=512 filename_parentat.isra.0+0x268/0x580 fs/namei.c:2388 device loop0 blocksize: 4096 __find_get_block_slow() failed. block=1, b_blocknr=8 b_state=0x00000029, b_size=512 device loop0 blocksize: 4096 __find_get_block_slow() failed. block=1, b_blocknr=8 b_state=0x00000029, b_size=512 device loop0 blocksize: 4096 __find_get_block_slow() failed. block=1, b_blocknr=8 b_state=0x00000029, b_size=512 device loop0 blocksize: 4096 __find_get_block_slow() failed. block=1, b_blocknr=8 filename_create+0xbd/0x5a0 fs/namei.c:3618 b_state=0x00000029, b_size=512 device loop0 blocksize: 4096 __find_get_block_slow() failed. block=1, b_blocknr=8 b_state=0x00000029, b_size=512 user_path_create fs/namei.c:3693 [inline] do_mkdirat+0xcf/0x2f0 fs/namei.c:3831 device loop0 blocksize: 4096 __find_get_block_slow() failed. block=1, b_blocknr=8 __do_sys_mkdir fs/namei.c:3855 [inline] __se_sys_mkdir fs/namei.c:3853 [inline] __x64_sys_mkdir+0x5c/0x80 fs/namei.c:3853 b_state=0x00000029, b_size=512 do_syscall_64+0x1a3/0x800 arch/x86/entry/common.c:290 device loop0 blocksize: 4096 __find_get_block_slow() failed. block=1, b_blocknr=8 b_state=0x00000029, b_size=512 device loop0 blocksize: 4096 __find_get_block_slow() failed. block=1, b_blocknr=8 b_state=0x00000029, b_size=512 entry_SYSCALL_64_after_hwframe+0x49/0xbe device loop0 blocksize: 4096 RIP: 0033:0x457ec9 __find_get_block_slow() failed. block=1, b_blocknr=8 Code: Bad RIP value. b_state=0x00000029, b_size=512 RSP: 002b:00007fa8a6ed8c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000053 device loop0 blocksize: 4096 RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 0000000000457ec9 __find_get_block_slow() failed. block=1, b_blocknr=8 RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000020000300 b_state=0x00000029, b_size=512 RBP: 000000000073bfa0 R08: 0000000000000000 R09: 0000000000000000 device loop0 blocksize: 4096 R10: 0000000000000000 R11: 0000000000000246 R12: 00007fa8a6ed96d4 __find_get_block_slow() failed. block=1, b_blocknr=8 R13: 00000000004bd600 R14: 00000000004d6820 R15: 00000000ffffffff b_state=0x00000029, b_size=512 INFO: task syz-executor0:14015 blocked for more than 140 seconds. device loop0 blocksize: 4096 Not tainted 5.0.0-rc1+ #14 __find_get_block_slow() failed. block=1, b_blocknr=8 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. b_state=0x00000029, b_size=512 syz-executor0 D28008 14015 8551 0x00000004 device loop0 blocksize: 4096 Call Trace: __find_get_block_slow() failed. block=1, b_blocknr=8 context_switch kernel/sched/core.c:2831 [inline] __schedule+0x897/0x1e60 kernel/sched/core.c:3472 b_state=0x00000029, b_size=512 device loop0 blocksize: 4096 __find_get_block_slow() failed. block=1, b_blocknr=8 b_state=0x00000029, b_size=512 device loop0 blocksize: 4096 __find_get_block_slow() failed. block=1, b_blocknr=8 b_state=0x00000029, b_size=512 schedule+0xfe/0x350 kernel/sched/core.c:3516 device loop0 blocksize: 4096 __find_get_block_slow() failed. block=1, b_blocknr=8 b_state=0x00000029, b_size=512 device loop0 blocksize: 4096 __find_get_block_slow() failed. block=1, b_blocknr=8 b_state=0x00000029, b_size=512 device loop0 blocksize: 4096 __find_get_block_slow() failed. block=1, b_blocknr=8 b_state=0x00000029, b_size=512 __rwsem_down_write_failed_common+0xa4d/0x1620 kernel/locking/rwsem-xadd.c:577 device loop0 blocksize: 4096 __find_get_block_slow() failed. block=1, b_blocknr=8 b_state=0x00000029, b_size=512 device loop0 blocksize: 4096 __find_get_block_slow() failed. block=1, b_blocknr=8 b_state=0x00000029, b_size=512 device loop0 blocksize: 4096 __find_get_block_slow() failed. block=1, b_blocknr=8 b_state=0x00000029, b_size=512 device loop0 blocksize: 4096 __find_get_block_slow() failed. block=1, b_blocknr=8 b_state=0x00000029, b_size=512 device loop0 blocksize: 4096 __find_get_block_slow() failed. block=1, b_blocknr=8 b_state=0x00000029, b_size=512 device loop0 blocksize: 4096 rwsem_down_write_failed+0xe/0x10 kernel/locking/rwsem-xadd.c:606 __find_get_block_slow() failed. block=1, b_blocknr=8 b_state=0x00000029, b_size=512 device loop0 blocksize: 4096 __find_get_block_slow() failed. block=1, b_blocknr=8 call_rwsem_down_write_failed+0x17/0x30 arch/x86/lib/rwsem.S:117 b_state=0x00000029, b_size=512 __down_write arch/x86/include/asm/rwsem.h:142 [inline] down_write_nested+0xa9/0x130 kernel/locking/rwsem.c:195 device loop0 blocksize: 4096 __find_get_block_slow() failed. block=1, b_blocknr=8 b_state=0x00000029, b_size=512 device loop0 blocksize: 4096 __find_get_block_slow() failed. block=1, b_blocknr=8 inode_lock_nested include/linux/fs.h:792 [inline] filename_create+0x1a8/0x5a0 fs/namei.c:3635 b_state=0x00000029, b_size=512 device loop0 blocksize: 4096 __find_get_block_slow() failed. block=1, b_blocknr=8 b_state=0x00000029, b_size=512 device loop0 blocksize: 4096 __find_get_block_slow() failed. block=1, b_blocknr=8 b_state=0x00000029, b_size=512 device loop0 blocksize: 4096 __find_get_block_slow() failed. block=1, b_blocknr=8 b_state=0x00000029, b_size=512 user_path_create fs/namei.c:3693 [inline] do_mkdirat+0xcf/0x2f0 fs/namei.c:3831 device loop0 blocksize: 4096 __find_get_block_slow() failed. block=1, b_blocknr=8 b_state=0x00000029, b_size=512 device loop0 blocksize: 4096 __find_get_block_slow() failed. block=1, b_blocknr=8 __do_sys_mkdir fs/namei.c:3855 [inline] __se_sys_mkdir fs/namei.c:3853 [inline] __x64_sys_mkdir+0x5c/0x80 fs/namei.c:3853 b_state=0x00000029, b_size=512 do_syscall_64+0x1a3/0x800 arch/x86/entry/common.c:290 device loop0 blocksize: 4096 __find_get_block_slow() failed. block=1, b_blocknr=8 b_state=0x00000029, b_size=512 device loop0 blocksize: 4096 __find_get_block_slow() failed. block=1, b_blocknr=8 b_state=0x00000029, b_size=512 device loop0 blocksize: 4096 __find_get_block_slow() failed. block=1, b_blocknr=8 entry_SYSCALL_64_after_hwframe+0x49/0xbe b_state=0x00000029, b_size=512 RIP: 0033:0x457ec9 device loop0 blocksize: 4096 Code: Bad RIP value. __find_get_block_slow() failed. block=1, b_blocknr=8 RSP: 002b:00007fa8a6eb7c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000053 b_state=0x00000029, b_size=512 device loop0 blocksize: 4096 __find_get_block_slow() failed. block=1, b_blocknr=8 RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 0000000000457ec9 b_state=0x00000029, b_size=512 device loop0 blocksize: 4096 __find_get_block_slow() failed. block=1, b_blocknr=8 RDX: 0000000000000000 RSI: 0000000000000020 RDI: 00000000200002c0 b_state=0x00000029, b_size=512 RBP: 000000000073c040 R08: 0000000000000000 R09: 0000000000000000 device loop0 blocksize: 4096 R10: 0000000000000000 R11: 0000000000000246 R12: 00007fa8a6eb86d4 R13: 00000000004bd600 R14: 00000000004d6820 R15: 00000000ffffffff __find_get_block_slow() failed. block=1, b_blocknr=8 INFO: task syz-executor0:14022 blocked for more than 140 seconds. b_state=0x00000029, b_size=512 Not tainted 5.0.0-rc1+ #14 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor0 D26952 14022 8551 0x00000004 device loop0 blocksize: 4096 Call Trace: __find_get_block_slow() failed. block=1, b_blocknr=8 context_switch kernel/sched/core.c:2831 [inline] __schedule+0x897/0x1e60 kernel/sched/core.c:3472 b_state=0x00000029, b_size=512 device loop0 blocksize: 4096 __find_get_block_slow() failed. block=1, b_blocknr=8 b_state=0x00000029, b_size=512 schedule+0xfe/0x350 kernel/sched/core.c:3516 device loop0 blocksize: 4096 __find_get_block_slow() failed. block=1, b_blocknr=8 __rwsem_down_read_failed_common kernel/locking/rwsem-xadd.c:280 [inline] rwsem_down_read_failed+0x360/0x6d0 kernel/locking/rwsem-xadd.c:297 b_state=0x00000029, b_size=512 device loop0 blocksize: 4096 __find_get_block_slow() failed. block=1, b_blocknr=8 b_state=0x00000029, b_size=512 device loop0 blocksize: 4096 __find_get_block_slow() failed. block=1, b_blocknr=8 b_state=0x00000029, b_size=512 device loop0 blocksize: 4096 call_rwsem_down_read_failed+0x18/0x30 arch/x86/lib/rwsem.S:94 __find_get_block_slow() failed. block=1, b_blocknr=8 __down_read arch/x86/include/asm/rwsem.h:83 [inline] down_read+0x9b/0x120 kernel/locking/rwsem.c:26 b_state=0x00000029, b_size=512 inode_lock_shared include/linux/fs.h:767 [inline] lookup_slow+0x4a/0x80 fs/namei.c:1687 device loop0 blocksize: 4096 walk_component+0x8e5/0x26a0 fs/namei.c:1810 __find_get_block_slow() failed. block=1, b_blocknr=8 b_state=0x00000029, b_size=512 device loop0 blocksize: 4096 __find_get_block_slow() failed. block=1, b_blocknr=8 b_state=0x00000029, b_size=512 device loop0 blocksize: 4096 __find_get_block_slow() failed. block=1, b_blocknr=8 b_state=0x00000029, b_size=512 link_path_walk.part.0+0xa57/0x1550 fs/namei.c:2141 device loop0 blocksize: 4096 __find_get_block_slow() failed. block=1, b_blocknr=8 b_state=0x00000029, b_size=512 device loop0 blocksize: 4096 __find_get_block_slow() failed. block=1, b_blocknr=8 b_state=0x00000029, b_size=512 device loop0 blocksize: 4096 __find_get_block_slow() failed. block=1, b_blocknr=8 link_path_walk fs/namei.c:2269 [inline] path_lookupat.isra.0+0xe3/0xba0 fs/namei.c:2317 b_state=0x00000029, b_size=512 device loop0 blocksize: 4096 __find_get_block_slow() failed. block=1, b_blocknr=8 b_state=0x00000029, b_size=512 device loop0 blocksize: 4096 __find_get_block_slow() failed. block=1, b_blocknr=8 b_state=0x00000029, b_size=512 filename_lookup+0x27a/0x530 fs/namei.c:2348 device loop0 blocksize: 4096 user_path_at_empty+0x43/0x50 fs/namei.c:2608 __find_get_block_slow() failed. block=1, b_blocknr=8 user_path_at include/linux/namei.h:57 [inline] path_setxattr+0xcc/0x230 fs/xattr.c:464 b_state=0x00000029, b_size=512 device loop0 blocksize: 4096 __do_sys_setxattr fs/xattr.c:484 [inline] __se_sys_setxattr fs/xattr.c:480 [inline] __x64_sys_setxattr+0xc4/0x150 fs/xattr.c:480 __find_get_block_slow() failed. block=1, b_blocknr=8 do_syscall_64+0x1a3/0x800 arch/x86/entry/common.c:290 b_state=0x00000029, b_size=512 device loop0 blocksize: 4096 __find_get_block_slow() failed. block=1, b_blocknr=8 b_state=0x00000029, b_size=512 device loop0 blocksize: 4096 __find_get_block_slow() failed. block=1, b_blocknr=8 entry_SYSCALL_64_after_hwframe+0x49/0xbe b_state=0x00000029, b_size=512 RIP: 0033:0x457ec9 device loop0 blocksize: 4096 __find_get_block_slow() failed. block=1, b_blocknr=8 Code: Bad RIP value. b_state=0x00000029, b_size=512 RSP: 002b:00007fa8a6e96c78 EFLAGS: 00000246 ORIG_RAX: 00000000000000bc device loop0 blocksize: 4096 __find_get_block_slow() failed. block=1, b_blocknr=8 RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 0000000000457ec9 b_state=0x00000029, b_size=512 RDX: 0000000020000280 RSI: 00000000200001c0 RDI: 0000000020000140 device loop0 blocksize: 4096 RBP: 000000000073c0e0 R08: 0000000000000002 R09: 0000000000000000 __find_get_block_slow() failed. block=1, b_blocknr=8 R10: 0000000000000011 R11: 0000000000000246 R12: 00007fa8a6e976d4 b_state=0x00000029, b_size=512 R13: 00000000004be6ec R14: 00000000004dab40 R15: 00000000ffffffff device loop0 blocksize: 4096 INFO: task syz-executor0:14036 blocked for more than 140 seconds. __find_get_block_slow() failed. block=1, b_blocknr=8 Not tainted 5.0.0-rc1+ #14 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor0 D27416 14036 8551 0x00000004 b_state=0x00000029, b_size=512 Call Trace: device loop0 blocksize: 4096 context_switch kernel/sched/core.c:2831 [inline] __schedule+0x897/0x1e60 kernel/sched/core.c:3472 __find_get_block_slow() failed. block=1, b_blocknr=8 b_state=0x00000029, b_size=512 device loop0 blocksize: 4096 __find_get_block_slow() failed. block=1, b_blocknr=8 b_state=0x00000029, b_size=512 device loop0 blocksize: 4096 __find_get_block_slow() failed. block=1, b_blocknr=8 b_state=0x00000029, b_size=512 device loop0 blocksize: 4096 schedule+0xfe/0x350 kernel/sched/core.c:3516 __find_get_block_slow() failed. block=1, b_blocknr=8 b_state=0x00000029, b_size=512 device loop0 blocksize: 4096 __find_get_block_slow() failed. block=1, b_blocknr=8 b_state=0x00000029, b_size=512 device loop0 blocksize: 4096 __find_get_block_slow() failed. block=1, b_blocknr=8 b_state=0x00000029, b_size=512 __rwsem_down_read_failed_common kernel/locking/rwsem-xadd.c:280 [inline] rwsem_down_read_failed+0x360/0x6d0 kernel/locking/rwsem-xadd.c:297 device loop0 blocksize: 4096 __find_get_block_slow() failed. block=1, b_blocknr=8 b_state=0x00000029, b_size=512 device loop0 blocksize: 4096 __find_get_block_slow() failed. block=1, b_blocknr=8 b_state=0x00000029, b_size=512 device loop0 blocksize: 4096 __find_get_block_slow() failed. block=1, b_blocknr=8 b_state=0x00000029, b_size=512 device loop0 blocksize: 4096 __find_get_block_slow() failed. block=1, b_blocknr=8 b_state=0x00000029, b_size=512 call_rwsem_down_read_failed+0x18/0x30 arch/x86/lib/rwsem.S:94 device loop0 blocksize: 4096 __down_read arch/x86/include/asm/rwsem.h:83 [inline] down_read+0x9b/0x120 kernel/locking/rwsem.c:26 __find_get_block_slow() failed. block=1, b_blocknr=8 b_state=0x00000029, b_size=512 device loop0 blocksize: 4096 __find_get_block_slow() failed. block=1, b_blocknr=8 b_state=0x00000029, b_size=512 inode_lock_shared include/linux/fs.h:767 [inline] lookup_slow+0x4a/0x80 fs/namei.c:1687 device loop0 blocksize: 4096 walk_component+0x8e5/0x26a0 fs/namei.c:1810 __find_get_block_slow() failed. block=1, b_blocknr=8 b_state=0x00000029, b_size=512 device loop0 blocksize: 4096 __find_get_block_slow() failed. block=1, b_blocknr=8 b_state=0x00000029, b_size=512 device loop0 blocksize: 4096 __find_get_block_slow() failed. block=1, b_blocknr=8 lookup_last fs/namei.c:2273 [inline] path_lookupat.isra.0+0x1f5/0xba0 fs/namei.c:2318 b_state=0x00000029, b_size=512 device loop0 blocksize: 4096 __find_get_block_slow() failed. block=1, b_blocknr=8 b_state=0x00000029, b_size=512 device loop0 blocksize: 4096 __find_get_block_slow() failed. block=1, b_blocknr=8 b_state=0x00000029, b_size=512 device loop0 blocksize: 4096 __find_get_block_slow() failed. block=1, b_blocknr=8 b_state=0x00000029, b_size=512 device loop0 blocksize: 4096 __find_get_block_slow() failed. block=1, b_blocknr=8 b_state=0x00000029, b_size=512 device loop0 blocksize: 4096 filename_lookup+0x27a/0x530 fs/namei.c:2348 __find_get_block_slow() failed. block=1, b_blocknr=8 b_state=0x00000029, b_size=512 device loop0 blocksize: 4096 __find_get_block_slow() failed. block=1, b_blocknr=8 b_state=0x00000029, b_size=512 device loop0 blocksize: 4096 __find_get_block_slow() failed. block=1, b_blocknr=8 b_state=0x00000029, b_size=512 device loop0 blocksize: 4096 __find_get_block_slow() failed. block=1, b_blocknr=8 user_path_at_empty+0x43/0x50 fs/namei.c:2608 b_state=0x00000029, b_size=512 user_path_at include/linux/namei.h:57 [inline] path_listxattr+0xac/0x190 fs/xattr.c:638 device loop0 blocksize: 4096 __find_get_block_slow() failed. block=1, b_blocknr=8 __do_sys_listxattr fs/xattr.c:653 [inline] __se_sys_listxattr fs/xattr.c:650 [inline] __x64_sys_listxattr+0x78/0xb0 fs/xattr.c:650 b_state=0x00000029, b_size=512 do_syscall_64+0x1a3/0x800 arch/x86/entry/common.c:290 device loop0 blocksize: 4096 __find_get_block_slow() failed. block=1, b_blocknr=8 b_state=0x00000029, b_size=512 device loop0 blocksize: 4096 __find_get_block_slow() failed. block=1, b_blocknr=8 entry_SYSCALL_64_after_hwframe+0x49/0xbe b_state=0x00000029, b_size=512 RIP: 0033:0x457ec9 device loop0 blocksize: 4096 __find_get_block_slow() failed. block=1, b_blocknr=8 Code: Bad RIP value. b_state=0x00000029, b_size=512 RSP: 002b:00007fa8a6e54c78 EFLAGS: 00000246 ORIG_RAX: 00000000000000c2 device loop0 blocksize: 4096 __find_get_block_slow() failed. block=1, b_blocknr=8 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000457ec9 b_state=0x00000029, b_size=512 RDX: ffffffffffffff6c RSI: 00000000200003c0 RDI: 0000000020000200 device loop0 blocksize: 4096 RBP: 000000000073c220 R08: 0000000000000000 R09: 0000000000000000 __find_get_block_slow() failed. block=1, b_blocknr=8 R10: 0000000000000000 R11: 0000000000000246 R12: 00007fa8a6e556d4 b_state=0x00000029, b_size=512 R13: 00000000004be68f R14: 00000000004d65c8 R15: 00000000ffffffff device loop0 blocksize: 4096 Showing all locks held in the system: __find_get_block_slow() failed. block=1, b_blocknr=8 1 lock held by khungtaskd/1039: b_state=0x00000029, b_size=512 #0: 00000000353e67d6 (rcu_read_lock){....}, at: debug_show_all_locks+0xc6/0x41d kernel/locking/lockdep.c:4389 device loop0 blocksize: 4096 1 lock held by rsyslogd/8391: __find_get_block_slow() failed. block=1, b_blocknr=8 #0: 00000000d8275e4c (&f->f_pos_lock){+.+.}, at: __fdget_pos+0x1b3/0x1f0 fs/file.c:795 b_state=0x00000029, b_size=512 2 locks held by getty/8513: device loop0 blocksize: 4096 #0: 00000000f132583e (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341 __find_get_block_slow() failed. block=1, b_blocknr=8 #1: 000000005f398279 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x30a/0x1eb0 drivers/tty/n_tty.c:2154 b_state=0x00000029, b_size=512 2 locks held by getty/8514: device loop0 blocksize: 4096 #0: 00000000cfcafcf2 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341 __find_get_block_slow() failed. block=1, b_blocknr=8 #1: 00000000cfc37d89 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x30a/0x1eb0 drivers/tty/n_tty.c:2154 b_state=0x00000029, b_size=512 2 locks held by getty/8515: device loop0 blocksize: 4096 #0: 000000008a1e9edf (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341 __find_get_block_slow() failed. block=1, b_blocknr=8 #1: 00000000918f8541 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x30a/0x1eb0 drivers/tty/n_tty.c:2154 b_state=0x00000029, b_size=512 2 locks held by getty/8516: device loop0 blocksize: 4096 #0: 000000008bc6fb41 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341 __find_get_block_slow() failed. block=1, b_blocknr=8 #1: 00000000534e8e24 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x30a/0x1eb0 drivers/tty/n_tty.c:2154 b_state=0x00000029, b_size=512 2 locks held by getty/8517: device loop0 blocksize: 4096 #0: 0000000097143b38 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341 __find_get_block_slow() failed. block=1, b_blocknr=8 #1: 00000000cffb6417 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x30a/0x1eb0 drivers/tty/n_tty.c:2154 b_state=0x00000029, b_size=512 2 locks held by getty/8518: device loop0 blocksize: 4096 #0: 000000004d922bbe (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341 __find_get_block_slow() failed. block=1, b_blocknr=8 #1: 000000006357f90f (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x30a/0x1eb0 drivers/tty/n_tty.c:2154 b_state=0x00000029, b_size=512 2 locks held by getty/8519: device loop0 blocksize: 4096 #0: 000000000f76130e (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341 __find_get_block_slow() failed. block=1, b_blocknr=8 #1: 00000000c8f6c56f (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x30a/0x1eb0 drivers/tty/n_tty.c:2154 b_state=0x00000029, b_size=512 7 locks held by syz-executor0/14003: device loop0 blocksize: 4096 1 lock held by syz-executor0/14011: __find_get_block_slow() failed. block=1, b_blocknr=8 #0: 0000000087a9f670 (&sb->s_type->i_mutex_key#20){++++}, at: inode_lock_shared include/linux/fs.h:767 [inline] #0: 0000000087a9f670 (&sb->s_type->i_mutex_key#20){++++}, at: lookup_slow+0x4a/0x80 fs/namei.c:1687 b_state=0x00000029, b_size=512 device loop0 blocksize: 4096 2 locks held by syz-executor0/14015: __find_get_block_slow() failed. block=1, b_blocknr=8 #0: 000000001498d38c (sb_writers#13){.+.+}, at: sb_start_write include/linux/fs.h:1602 [inline] #0: 000000001498d38c (sb_writers#13){.+.+}, at: mnt_want_write+0x3f/0xc0 fs/namespace.c:357 b_state=0x00000029, b_size=512 #1: 0000000087a9f670 (&sb->s_type->i_mutex_key#20/1){+.+.}, at: inode_lock_nested include/linux/fs.h:792 [inline] #1: 0000000087a9f670 (&sb->s_type->i_mutex_key#20/1){+.+.}, at: filename_create+0x1a8/0x5a0 fs/namei.c:3635 device loop0 blocksize: 4096 __find_get_block_slow() failed. block=1, b_blocknr=8 1 lock held by syz-executor0/14022: b_state=0x00000029, b_size=512 #0: 0000000087a9f670 (&sb->s_type->i_mutex_key#20){++++}, at: inode_lock_shared include/linux/fs.h:767 [inline] #0: 0000000087a9f670 (&sb->s_type->i_mutex_key#20){++++}, at: lookup_slow+0x4a/0x80 fs/namei.c:1687 device loop0 blocksize: 4096 __find_get_block_slow() failed. block=1, b_blocknr=8 1 lock held by syz-executor0/14036: b_state=0x00000029, b_size=512 device loop0 blocksize: 4096 #0: 0000000087a9f670 (&sb->s_type->i_mutex_key#20){++++}, at: inode_lock_shared include/linux/fs.h:767 [inline] #0: 0000000087a9f670 (&sb->s_type->i_mutex_key#20){++++}, at: lookup_slow+0x4a/0x80 fs/namei.c:1687 __find_get_block_slow() failed. block=1, b_blocknr=8 b_state=0x00000029, b_size=512 ============================================= device loop0 blocksize: 4096 __find_get_block_slow() failed. block=1, b_blocknr=8 NMI backtrace for cpu 0 b_state=0x00000029, b_size=512 CPU: 0 PID: 1039 Comm: khungtaskd Not tainted 5.0.0-rc1+ #14 device loop0 blocksize: 4096 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __find_get_block_slow() failed. block=1, b_blocknr=8 __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x1db/0x2d0 lib/dump_stack.c:113 b_state=0x00000029, b_size=512 nmi_cpu_backtrace.cold+0x63/0xa4 lib/nmi_backtrace.c:101 device loop0 blocksize: 4096 nmi_trigger_cpumask_backtrace+0x1be/0x236 lib/nmi_backtrace.c:62 __find_get_block_slow() failed. block=1, b_blocknr=8 arch_trigger_cpumask_backtrace+0x14/0x20 arch/x86/kernel/apic/hw_nmi.c:38 b_state=0x00000029, b_size=512 trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:203 [inline] watchdog+0xbbb/0x1170 kernel/hung_task.c:287 device loop0 blocksize: 4096 __find_get_block_slow() failed. block=1, b_blocknr=8 b_state=0x00000029, b_size=512 device loop0 blocksize: 4096 kthread+0x357/0x430 kernel/kthread.c:246 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:352 __find_get_block_slow() failed. block=1, b_blocknr=8 Sending NMI from CPU 0 to CPUs 1: b_state=0x00000029, b_size=512 INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 1.777 msecs NMI backtrace for cpu 1 CPU: 1 PID: 14003 Comm: syz-executor0 Not tainted 5.0.0-rc1+ #14 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:__run_timers+0x924/0xd50 kernel/time/timer.c:1675 Code: 85 04 fb ff ff e8 8c d4 12 00 48 8b 85 00 fe ff ff 48 c1 e8 03 42 c6 04 30 f8 48 8b 85 08 fe ff ff 80 38 00 0f 85 ff 02 00 00 <48> 8b 85 10 fe ff ff 4c 8b 25 2e 6d 11 08 80 38 00 0f 85 f9 02 00 RSP: 0018:ffff8880ae707b10 EFLAGS: 00000046 RAX: fffffbfff1301200 RBX: 0000000000000000 RCX: ffffffff816f228b RDX: 0000000000000100 RSI: ffffffff816f22a4 RDI: 0000000000000005 RBP: ffff8880ae707d28 R08: ffff88805010e540 R09: ffffed1015ce0f50 R10: ffffed1015ce0f4f R11: 0000000000000003 R12: ffffffff8bfc9780 R13: ffffed1015ce0f80 R14: dffffc0000000000 R15: ffff8880ae723bc0 FS: 00007fa8a6efa700(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f7788002000 CR3: 0000000054450000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: run_timer_softirq+0x52/0xb0 kernel/time/timer.c:1694 __do_softirq+0x30b/0xb11 kernel/softirq.c:292 invoke_softirq kernel/softirq.c:373 [inline] irq_exit+0x180/0x1d0 kernel/softirq.c:413 exiting_irq arch/x86/include/asm/apic.h:536 [inline] smp_apic_timer_interrupt+0x1b7/0x760 arch/x86/kernel/apic/apic.c:1062 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:807 RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:766 [inline] RIP: 0010:console_trylock_spinning kernel/printk/printk.c:1697 [inline] RIP: 0010:vprintk_emit+0x84c/0x960 kernel/printk/printk.c:1930 Code: 00 fc ff df 48 c1 e8 03 80 3c 10 00 0f 85 ef 00 00 00 48 83 3d 74 5b 2a 08 00 74 2d e8 ad d2 19 00 48 8b bd 10 ff ff ff 57 9d <0f> 1f 44 00 00 e9 a3 fe ff ff e8 95 d2 19 00 0f 0b e8 8e d2 19 00 RSP: 0018:ffff888055f56d60 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 RAX: 0000000000040000 RBX: 1ffff1100abeadb2 RCX: ffffc90005e4f000 RDX: 0000000000040000 RSI: ffffffff81682483 RDI: 0000000000000246 RBP: ffff888055f56e58 R08: 0000000000000006 R09: ffff88805010ee58 R10: ffff88805010e540 R11: 0000000000000000 R12: 0000000000000200 R13: ffffed100abeadbc R14: 0000000000000000 R15: ffff888055f56e30 vprintk_default+0x28/0x30 kernel/printk/printk.c:1958 vprintk_func+0x7e/0x189 kernel/printk/printk_safe.c:398 printk+0xba/0xed kernel/printk/printk.c:1991 __find_get_block_slow fs/buffer.c:235 [inline] __find_get_block fs/buffer.c:1294 [inline] __find_get_block.cold+0x81/0xfb fs/buffer.c:1288 __getblk_slow fs/buffer.c:1039 [inline] __getblk_gfp+0x295/0xd20 fs/buffer.c:1320 __bread_gfp+0x2f/0x300 fs/buffer.c:1354 sb_bread include/linux/buffer_head.h:307 [inline] fat__get_entry+0x586/0xa40 fs/fat/dir.c:101 fat_get_entry fs/fat/dir.c:129 [inline] fat_search_long+0x345/0x17d0 fs/fat/dir.c:479 vfat_find+0x10e/0x140 fs/fat/namei_vfat.c:697 vfat_lookup+0x10a/0x6b0 fs/fat/namei_vfat.c:711 lookup_open+0x726/0x1b80 fs/namei.c:3213 do_last fs/namei.c:3324 [inline] path_openat+0x25fd/0x5650 fs/namei.c:3534 do_filp_open+0x26f/0x370 fs/namei.c:3564 do_sys_open+0x59a/0x7c0 fs/open.c:1063 __do_sys_openat fs/open.c:1090 [inline] __se_sys_openat fs/open.c:1084 [inline] __x64_sys_openat+0x9d/0x100 fs/open.c:1084 do_syscall_64+0x1a3/0x800 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x457ec9 Code: 6d b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 3b b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007fa8a6ef9c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 0000000000457ec9 RDX: 0000000000000002 RSI: 0000000020000080 RDI: 0000000000000007 RBP: 000000000073bf00 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007fa8a6efa6d4 R13: 00000000004c3e4f R14: 00000000004d6eb0 R15: 00000000ffffffff