INFO: task syz-executor.0:9134 blocked for more than 140 seconds.
      Not tainted 4.19.152-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor.0  D29272  9134   6818 0x00000004
Call Trace:
 context_switch kernel/sched/core.c:2828 [inline]
 __schedule+0x8e5/0x22e0 kernel/sched/core.c:3517
 schedule+0x8d/0x1b0 kernel/sched/core.c:3561
 request_wait_answer+0x3dc/0x750 fs/fuse/dev.c:485
 __fuse_request_send+0x123/0x1d0 fs/fuse/dev.c:505
 fuse_simple_request+0x2d2/0x6f0 fs/fuse/dev.c:576
 fuse_do_getattr+0x230/0xc40 fs/fuse/dir.c:927
 fuse_update_get_attr fs/fuse/dir.c:960 [inline]
 fuse_getattr+0x2c1/0x380 fs/fuse/dir.c:1838
 vfs_getattr_nosec+0xff/0x160 fs/stat.c:79
 vfs_getattr fs/stat.c:116 [inline]
 vfs_statx+0x15a/0x210 fs/stat.c:189
 vfs_stat include/linux/fs.h:3133 [inline]
 __do_sys_newstat fs/stat.c:337 [inline]
 __se_sys_newstat+0x96/0x120 fs/stat.c:333
 do_syscall_64+0xf9/0x670 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x45de59
Code: Bad RIP value.
RSP: 002b:00007fe21b28ac78 EFLAGS: 00000246 ORIG_RAX: 0000000000000004
RAX: ffffffffffffffda RBX: 0000000000035100 RCX: 000000000045de59
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00000000200004c0
RBP: 000000000118bf58 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000118bf2c
R13: 00007ffcfb13ef6f R14: 00007fe21b28b9c0 R15: 000000000118bf2c

Showing all locks held in the system:
1 lock held by khungtaskd/1095:
 #0: 0000000024bc728f (rcu_read_lock){....}, at: debug_show_all_locks+0x53/0x291 kernel/locking/lockdep.c:4440
1 lock held by in:imklog/6184:
 #0: 00000000bf185f0f (&f->f_pos_lock){+.+.}, at: __fdget_pos+0xe3/0x100 fs/file.c:767

=============================================

NMI backtrace for cpu 1
CPU: 1 PID: 1095 Comm: khungtaskd Not tainted 4.19.152-syzkaller #0
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+0x22c/0x33e lib/dump_stack.c:118
 nmi_cpu_backtrace.cold+0x18/0x3d lib/nmi_backtrace.c:101
 nmi_trigger_cpumask_backtrace+0x1a6/0x1eb lib/nmi_backtrace.c:62
 trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline]
 check_hung_uninterruptible_tasks kernel/hung_task.c:203 [inline]
 watchdog+0xa62/0x1020 kernel/hung_task.c:287
 kthread+0x33f/0x460 kernel/kthread.c:259
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 3715 Comm: systemd-journal Not tainted 4.19.152-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:__sanitizer_cov_trace_const_cmp4+0x4/0x20 kernel/kcov.c:188
Code: 84 00 00 00 00 00 48 8b 0c 24 0f b7 d6 0f b7 f7 bf 03 00 00 00 e9 ec fe ff ff 66 90 66 2e 0f 1f 84 00 00 00 00 00 48 8b 0c 24 <89> f2 89 fe bf 05 00 00 00 e9 ce fe ff ff 0f 1f 40 00 66 2e 0f 1f
RSP: 0018:ffff8880943dfd88 EFLAGS: 00000246
RAX: ffff8880943d4100 RBX: 0000000000002068 RCX: ffffffff81bd0cd1
RDX: 0000000000000000 RSI: 0000000000000020 RDI: 0000000000000030
RBP: ffff8880943dfde0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000005 R11: 0000000000000002 R12: 0000000000000000
R13: 0000000000000020 R14: 0000000000000000 R15: 0000000000000002
FS:  00007f4a45daf8c0(0000) GS:ffff8880ae200000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f4a43247020 CR3: 0000000093c1a000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 fsnotify_change include/linux/fsnotify.h:274 [inline]
 notify_change+0x7a1/0xfc0 fs/attr.c:339
 do_truncate+0x134/0x1f0 fs/open.c:63
 do_sys_ftruncate+0x492/0x560 fs/open.c:194
 do_syscall_64+0xf9/0x670 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x7f4a45072ec7
Code: 73 01 c3 48 8b 0d d1 5f 2b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 4d 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d a1 5f 2b 00 f7 d8 64 89 01 48
RSP: 002b:00007ffc7c99a5f8 EFLAGS: 00000206 ORIG_RAX: 000000000000004d
RAX: ffffffffffffffda RBX: 00007ffc7c99a630 RCX: 00007f4a45072ec7
RDX: 0000561058637ea0 RSI: 0000000000800000 RDI: 0000000000000010
RBP: 00007ffc7c99a628 R08: 0000000000000008 R09: 000056105863827c
R10: 0000561058638200 R11: 0000000000000206 R12: 0000561058638200
R13: 00007ffc7c99a728 R14: 0000561056c05958 R15: 0005b1dc1f84097c