INFO: task syz-executor5:2516 blocked for more than 140 seconds.
      Not tainted 4.19.0-rc7+ #182
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor5   D25488  2516   5953 0x20020004
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_getxattr+0x42f/0x760 fs/fuse/xattr.c:80
 fuse_get_acl+0x1be/0x360 fs/fuse/acl.c:35
 get_acl+0x16b/0x2a0 fs/posix_acl.c:140
 posix_acl_xattr_get+0xff/0x1d0 fs/posix_acl.c:844
 __vfs_getxattr+0xee/0x150 fs/xattr.c:310
 vfs_getxattr+0x275/0x390 fs/xattr.c:341
 getxattr+0x139/0x2c0 fs/xattr.c:537
 path_getxattr+0x103/0x1b0 fs/xattr.c:565
 __do_sys_getxattr fs/xattr.c:577 [inline]
 __se_sys_getxattr fs/xattr.c:574 [inline]
 __ia32_sys_getxattr+0x99/0xf0 fs/xattr.c:574
 do_syscall_32_irqs_on arch/x86/entry/common.c:326 [inline]
 do_fast_syscall_32+0x34d/0xfb2 arch/x86/entry/common.c:397
 entry_SYSENTER_compat+0x70/0x7f arch/x86/entry/entry_64_compat.S:139
RIP: 0023:0xf7fa2ca9
Code: Bad RIP value.
RSP: 002b:00000000f5f9e0cc EFLAGS: 00000296 ORIG_RAX: 00000000000000e5
RAX: ffffffffffffffda RBX: 00000000200000c0 RCX: 0000000020000680
RDX: 0000000020000540 RSI: 0000000000000044 RDI: 0000000000000000
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
INFO: lockdep is turned off.
NMI backtrace for cpu 1
CPU: 1 PID: 982 Comm: khungtaskd Not tainted 4.19.0-rc7+ #182
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