netlink: 'syz-executor1': attribute type 1 has an invalid length.
netlink: 20 bytes leftover after parsing attributes in process `syz-executor1'.
netlink: 'syz-executor1': attribute type 1 has an invalid length.
netlink: 20 bytes leftover after parsing attributes in process `syz-executor1'.
INFO: task syz-executor5:24826 blocked for more than 140 seconds.
      Not tainted 4.18.0-rc4-next-20180713+ #7
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor5   D23632 24826   4492 0x00000004
Call Trace:
 context_switch kernel/sched/core.c:2848 [inline]
 __schedule+0x87c/0x1ed0 kernel/sched/core.c:3496
 schedule+0xfb/0x450 kernel/sched/core.c:3540
 __rwsem_down_write_failed_common+0x95d/0x1630 kernel/locking/rwsem-xadd.c:566
 rwsem_down_write_failed+0xe/0x10 kernel/locking/rwsem-xadd.c:595
 call_rwsem_down_write_failed+0x17/0x30 arch/x86/lib/rwsem.S:117
 __down_write arch/x86/include/asm/rwsem.h:142 [inline]
 down_write+0xaa/0x130 kernel/locking/rwsem.c:72
 inode_lock include/linux/fs.h:752 [inline]
 fuse_reverse_inval_entry+0xae/0x6d0 fs/fuse/dir.c:969
 fuse_notify_delete fs/fuse/dev.c:1541 [inline]
 fuse_notify fs/fuse/dev.c:1773 [inline]
 fuse_dev_do_write+0x2d47/0x36f0 fs/fuse/dev.c:1848
 fuse_dev_write+0x19a/0x240 fs/fuse/dev.c:1928
 call_write_iter include/linux/fs.h:1826 [inline]
 new_sync_write fs/read_write.c:474 [inline]
 __vfs_write+0x6af/0x9d0 fs/read_write.c:487
 vfs_write+0x1fc/0x560 fs/read_write.c:549
 ksys_write+0x101/0x260 fs/read_write.c:598
 __do_sys_write fs/read_write.c:610 [inline]
 __se_sys_write fs/read_write.c:607 [inline]
 __x64_sys_write+0x73/0xb0 fs/read_write.c:607
 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x455ab9
Code: Bad RIP value.
RSP: 002b:00007f25b42fcc68 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f25b42fd6d4 RCX: 0000000000455ab9
RDX: 000000000000002c RSI: 0000000020000000 RDI: 0000000000000013
RBP: 000000000072bea0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 00000000004c2834 R14: 00000000004d45c0 R15: 0000000000000000
INFO: task syz-executor5:24847 blocked for more than 140 seconds.
      Not tainted 4.18.0-rc4-next-20180713+ #7
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor5   D24656 24847   4492 0x00000004
Call Trace:
 context_switch kernel/sched/core.c:2848 [inline]
 __schedule+0x87c/0x1ed0 kernel/sched/core.c:3496
 schedule+0xfb/0x450 kernel/sched/core.c:3540
 __rwsem_down_read_failed_common kernel/locking/rwsem-xadd.c:269 [inline]
 rwsem_down_read_failed+0x362/0x600 kernel/locking/rwsem-xadd.c:286
 call_rwsem_down_read_failed+0x18/0x30 arch/x86/lib/rwsem.S:94
 __down_read arch/x86/include/asm/rwsem.h:83 [inline]
 down_read+0xc3/0x1d0 kernel/locking/rwsem.c:26
 inode_lock_shared include/linux/fs.h:767 [inline]
 lookup_slow+0x49/0x80 fs/namei.c:1687
 walk_component+0x94a/0x2630 fs/namei.c:1810
 lookup_last fs/namei.c:2278 [inline]
 path_lookupat.isra.45+0x202/0xbf0 fs/namei.c:2328
 filename_lookup+0x264/0x510 fs/namei.c:2362
 user_path_at_empty+0x40/0x50 fs/namei.c:2625
 user_path include/linux/namei.h:62 [inline]
 do_mount+0x180/0x1fb0 fs/namespace.c:2829
 ksys_mount+0x12d/0x140 fs/namespace.c:3105
 __do_sys_mount fs/namespace.c:3119 [inline]
 __se_sys_mount fs/namespace.c:3116 [inline]
 __x64_sys_mount+0xbe/0x150 fs/namespace.c:3116
 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x455ab9
Code: Bad RIP value.
RSP: 002b:00007f25b42dbc68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f25b42dc6d4 RCX: 0000000000455ab9
RDX: 00000000200004c0 RSI: 0000000020000480 RDI: 0000000000000000
RBP: 000000000072bf48 R08: 0000000020000580 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 00000000004c025d R14: 00000000004cfef8 R15: 0000000000000001
INFO: task syz-executor5:24848 blocked for more than 140 seconds.
      Not tainted 4.18.0-rc4-next-20180713+ #7
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor5   D25264 24848   4492 0x00000004
Call Trace:
 context_switch kernel/sched/core.c:2848 [inline]
 __schedule+0x87c/0x1ed0 kernel/sched/core.c:3496
 schedule+0xfb/0x450 kernel/sched/core.c:3540
 request_wait_answer+0x4c8/0x920 fs/fuse/dev.c:463
 __fuse_request_send+0x12a/0x1d0 fs/fuse/dev.c:483
 fuse_request_send+0x62/0xa0 fs/fuse/dev.c:496
 fuse_simple_request+0x33d/0x730 fs/fuse/dev.c:554
 fuse_lookup_name+0x3ee/0x830 fs/fuse/dir.c:323
 fuse_lookup+0xf9/0x4c0 fs/fuse/dir.c:360
 __lookup_slow+0x2b5/0x540 fs/namei.c:1671
 lookup_slow+0x57/0x80 fs/namei.c:1688
 walk_component+0x94a/0x2630 fs/namei.c:1810
 lookup_last fs/namei.c:2278 [inline]
 path_lookupat.isra.45+0x202/0xbf0 fs/namei.c:2328
 filename_lookup+0x264/0x510 fs/namei.c:2362
 user_path_at_empty+0x40/0x50 fs/namei.c:2625
 user_path include/linux/namei.h:62 [inline]
 do_mount+0x180/0x1fb0 fs/namespace.c:2829
 ksys_mount+0x12d/0x140 fs/namespace.c:3105
 __do_sys_mount fs/namespace.c:3119 [inline]
 __se_sys_mount fs/namespace.c:3116 [inline]
 __x64_sys_mount+0xbe/0x150 fs/namespace.c:3116
 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x455ab9
Code: Bad RIP value.
RSP: 002b:00007f25b42bac68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f25b42bb6d4 RCX: 0000000000455ab9
RDX: 00000000200004c0 RSI: 0000000020000480 RDI: 0000000000000000
RBP: 000000000072bff0 R08: 0000000020000580 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 00000000004c025d R14: 00000000004cfef8 R15: 0000000000000002
INFO: task syz-executor5:24856 blocked for more than 140 seconds.
      Not tainted 4.18.0-rc4-next-20180713+ #7
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor5   D24016 24856   4492 0x00000004
Call Trace:
 context_switch kernel/sched/core.c:2848 [inline]
 __schedule+0x87c/0x1ed0 kernel/sched/core.c:3496
 schedule+0xfb/0x450 kernel/sched/core.c:3540
 __rwsem_down_write_failed_common+0x95d/0x1630 kernel/locking/rwsem-xadd.c:566
 rwsem_down_write_failed+0xe/0x10 kernel/locking/rwsem-xadd.c:595
 call_rwsem_down_write_failed+0x17/0x30 arch/x86/lib/rwsem.S:117
 __down_write arch/x86/include/asm/rwsem.h:142 [inline]
 down_write+0xaa/0x130 kernel/locking/rwsem.c:72
 inode_lock include/linux/fs.h:752 [inline]
 lock_mount+0x8c/0x2e0 fs/namespace.c:1970
 do_add_mount+0x27/0x370 fs/namespace.c:2460
 do_new_mount_fc fs/namespace.c:2519 [inline]
 do_new_mount fs/namespace.c:2571 [inline]
 do_mount+0x1af2/0x1fb0 fs/namespace.c:2889
 ksys_mount+0x12d/0x140 fs/namespace.c:3105
 __do_sys_mount fs/namespace.c:3119 [inline]
 __se_sys_mount fs/namespace.c:3116 [inline]
 __x64_sys_mount+0xbe/0x150 fs/namespace.c:3116
 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x455ab9
Code: Bad RIP value.
RSP: 002b:00007f25b4299c68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f25b429a6d4 RCX: 0000000000455ab9
RDX: 0000000020000300 RSI: 0000000020000200 RDI: 0000000000000000
RBP: 000000000072c098 R08: 0000000020000400 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 00000000004c025d R14: 00000000004cfef8 R15: 0000000000000003
INFO: lockdep is turned off.
NMI backtrace for cpu 0
CPU: 0 PID: 901 Comm: khungtaskd Not tainted 4.18.0-rc4-next-20180713+ #7
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x1c9/0x2b4 lib/dump_stack.c:113
 nmi_cpu_backtrace.cold.3+0x48/0x88 lib/nmi_backtrace.c:101
 nmi_trigger_cpumask_backtrace+0x151/0x192 lib/nmi_backtrace.c:62
 arch_trigger_cpumask_backtrace+0x14/0x20 arch/x86/kernel/apic/hw_nmi.c:38
 trigger_all_cpu_backtrace include/linux/nmi.h:144 [inline]
 check_hung_uninterruptible_tasks kernel/hung_task.c:231 [inline]
 watchdog+0xb81/0x10f0 kernel/hung_task.c:292
 kthread+0x345/0x410 kernel/kthread.c:246
 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:415
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1 skipped: idling at native_safe_halt+0x6/0x10 arch/x86/include/asm/irqflags.h:54