loop2: rw=1, want=144, limit=112
attempt to access beyond end of device
loop2: rw=1, want=145, limit=112
attempt to access beyond end of device
loop2: rw=1, want=2537, limit=112
INFO: task syz-executor5:21103 blocked for more than 140 seconds.
      Not tainted 4.19.0-rc7+ #275
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor5   D19040 21103   6008 0x00000004
Call Trace:
 context_switch kernel/sched/core.c:2825 [inline]
 __schedule+0x86c/0x1ed0 kernel/sched/core.c:3473
 schedule+0xfe/0x460 kernel/sched/core.c:3517
 request_wait_answer+0x4a6/0x900 fs/fuse/dev.c:474
 __fuse_request_send+0x12a/0x1d0 fs/fuse/dev.c:494
 fuse_request_send+0x62/0xa0 fs/fuse/dev.c:507
 fuse_simple_request+0x33d/0x730 fs/fuse/dev.c:565
 fuse_lookup_name+0x3ee/0x830 fs/fuse/dir.c:323
 fuse_lookup+0xff/0x4c0 fs/fuse/dir.c:361
 __lookup_slow+0x2b5/0x540 fs/namei.c:1671
 lookup_slow+0x57/0x80 fs/namei.c:1688
 walk_component+0x92b/0x25c0 fs/namei.c:1810
 link_path_walk.part.40+0xa61/0x1530 fs/namei.c:2141
 link_path_walk fs/namei.c:2072 [inline]
 path_openat+0x270/0x5160 fs/namei.c:3533
 do_filp_open+0x255/0x380 fs/namei.c:3564
 do_sys_open+0x568/0x700 fs/open.c:1063
 __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
 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x4111d1
Code: cc cc cc cc cc cc cc cc cc 64 48 8b 0c 25 f8 ff ff ff 48 3b 61 10 76 3a 48 83 ec 20 48 89 6c 24 18 48 8d 6c 24 18 48 8b 44 24 <28> 48 89 04 24 48 8b 44 24 30 48 89 44 24 08 e8 0b ff ff ff 48 8b
RSP: 002b:00007fbd7f24f7a0 EFLAGS: 00000293 ORIG_RAX: 0000000000000002
RAX: ffffffffffffffda RBX: 6666666666666667 RCX: 00000000004111d1
RDX: 0000000000000000 RSI: 0000000000101000 RDI: 00007fbd7f24f850
RBP: 000000000072bf00 R08: 000000000000000f R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000293 R12: 00007fbd7f2506d4
R13: 00000000004c4e16 R14: 00000000004d8220 R15: 00000000ffffffff
INFO: task syz-executor5:21107 blocked for more than 140 seconds.
      Not tainted 4.19.0-rc7+ #275
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor5   D24768 21107   6008 0x00000004
Call Trace:
 context_switch kernel/sched/core.c:2825 [inline]
 __schedule+0x86c/0x1ed0 kernel/sched/core.c:3473
 schedule+0xfe/0x460 kernel/sched/core.c:3517
 request_wait_answer+0x4a6/0x900 fs/fuse/dev.c:474
 __fuse_request_send+0x12a/0x1d0 fs/fuse/dev.c:494
 fuse_request_send+0x62/0xa0 fs/fuse/dev.c:507
 fuse_simple_request+0x33d/0x730 fs/fuse/dev.c:565
 fuse_do_getattr+0x3c6/0x1350 fs/fuse/dir.c:918
 fuse_perm_getattr+0x3d/0x60 fs/fuse/dir.c:1096
 fuse_permission+0x3ac/0x530 fs/fuse/dir.c:1131
 do_inode_permission fs/namei.c:386 [inline]
 inode_permission+0x35e/0x560 fs/namei.c:451
 may_lookup fs/namei.c:1702 [inline]
 link_path_walk.part.40+0xabd/0x1530 fs/namei.c:2084
 link_path_walk fs/namei.c:2269 [inline]
 path_lookupat.isra.43+0xf7/0xc00 fs/namei.c:2317
 filename_lookup+0x26a/0x520 fs/namei.c:2348
 user_path_at_empty+0x40/0x50 fs/namei.c:2608
 user_path_at include/linux/namei.h:57 [inline]
 vfs_statx+0x129/0x210 fs/stat.c:185
 vfs_stat include/linux/fs.h:3113 [inline]
 __do_sys_newstat+0x8f/0x110 fs/stat.c:337
 __se_sys_newstat fs/stat.c:333 [inline]
 __x64_sys_newstat+0x54/0x80 fs/stat.c:333
 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x457579
Code: 24 08 48 89 01 e8 d7 2d fc ff e8 22 7a fc ff b8 02 00 00 00 48 8d 0d 6a 60 09 01 87 01 8b 05 62 60 09 01 83 f8 01 0f 85 8a 00 <00> 00 b8 01 00 00 00 88 05 9e 65 09 01 84 c0 74 72 b8 01 00 00 00
RSP: 002b:00007fbd7f22ec78 EFLAGS: 00000246 ORIG_RAX: 0000000000000004
RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 0000000000457579
RDX: 0000000000000000 RSI: 0000000020000280 RDI: 0000000020000180
RBP: 000000000072bfa0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fbd7f22f6d4
R13: 00000000004ddf3b R14: 00000000004d7a58 R15: 00000000ffffffff
INFO: lockdep is turned off.
NMI backtrace for cpu 1
CPU: 1 PID: 983 Comm: khungtaskd Not tainted 4.19.0-rc7+ #275
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x1c4/0x2b4 lib/dump_stack.c:113
 nmi_cpu_backtrace.cold.3+0x63/0xa2 lib/nmi_backtrace.c:101
 nmi_trigger_cpumask_backtrace+0x1b3/0x1ed 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:204 [inline]
 watchdog+0xb3e/0x1050 kernel/hung_task.c:265
 kthread+0x35a/0x420 kernel/kthread.c:246
 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:413
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0 skipped: idling at native_safe_halt+0x6/0x10 arch/x86/include/asm/irqflags.h:57