INFO: task syz.4.37835:18719 blocked for more than 122 seconds.
      Not tainted 6.12.30-syzkaller-g15178d63ac5e #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.4.37835     state:D stack:0     pid:18719 tgid:18719 ppid:18687  flags:0x00004006
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5945 [inline]
 __schedule+0x132b/0x1e00 kernel/sched/core.c:7789
 __schedule_loop kernel/sched/core.c:7870 [inline]
 schedule+0xc6/0x240 kernel/sched/core.c:7885
 request_wait_answer fs/fuse/dev.c:476 [inline]
 __fuse_request_send fs/fuse/dev.c:491 [inline]
 __fuse_simple_request+0xdb1/0x1980 fs/fuse/dev.c:586
 fuse_simple_request fs/fuse/fuse_i.h:1248 [inline]
 fuse_flush+0x909/0x1d50 fs/fuse/file.c:582
 filp_flush fs/open.c:1550 [inline]
 filp_close+0xbd/0x160 fs/open.c:1563
 __range_close fs/file.c:712 [inline]
 __close_range+0x50e/0x6c0 fs/file.c:769
 __do_sys_close_range fs/open.c:1616 [inline]
 __se_sys_close_range fs/open.c:1613 [inline]
 __x64_sys_close_range+0x7e/0x90 fs/open.c:1613
 x64_sys_call+0x1686/0x2ee0 arch/x86/include/generated/asm/syscalls_64.h:437
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0x58/0xf0 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x76/0x7e
RIP: 0033:0x7f00a338e9a9
RSP: 002b:00007fff595252c8 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4
RAX: ffffffffffffffda RBX: 00007f00a35b7ba0 RCX: 00007f00a338e9a9
RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003
RBP: 00007f00a35b7ba0 R08: 00000000000000e0 R09: 0000000e595255bf
R10: 00007f00a35b7ac0 R11: 0000000000000246 R12: 0000000000240ebd
R13: 00007fff595253c0 R14: ffffffffffffffff R15: 00007fff595253e0
 </TASK>
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 37 Comm: khungtaskd Not tainted 6.12.30-syzkaller-g15178d63ac5e #0 2e49b5e8bba3abd4e44f2eeb6ccfddb4f386a3cf
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
Call Trace:
 <TASK>
 __dump_stack+0x21/0x30 lib/dump_stack.c:94
 dump_stack_lvl+0x10c/0x190 lib/dump_stack.c:120
 dump_stack+0x19/0x20 lib/dump_stack.c:129
 nmi_cpu_backtrace+0x2bf/0x2d0 lib/nmi_backtrace.c:113
 nmi_trigger_cpumask_backtrace+0x142/0x2c0 lib/nmi_backtrace.c:62
 arch_trigger_cpumask_backtrace+0x14/0x20 arch/x86/kernel/apic/hw_nmi.c:41
 trigger_all_cpu_backtrace include/linux/nmi.h:158 [inline]
 check_hung_uninterruptible_tasks kernel/hung_task.c:267 [inline]
 watchdog+0xd8f/0xed0 kernel/hung_task.c:423
 kthread+0x2c7/0x370 kernel/kthread.c:389
 ret_from_fork+0x64/0xa0 arch/x86/kernel/process.c:153
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 98 Comm: klogd Not tainted 6.12.30-syzkaller-g15178d63ac5e #0 2e49b5e8bba3abd4e44f2eeb6ccfddb4f386a3cf
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
RIP: 0010:arch_atomic_try_cmpxchg arch/x86/include/asm/atomic.h:-1 [inline]
RIP: 0010:raw_atomic_try_cmpxchg_acquire include/linux/atomic/atomic-arch-fallback.h:2170 [inline]
RIP: 0010:atomic_try_cmpxchg_acquire include/linux/atomic/atomic-instrumented.h:1302 [inline]
RIP: 0010:queued_spin_trylock include/asm-generic/qspinlock.h:97 [inline]
RIP: 0010:do_raw_spin_trylock include/linux/spinlock.h:193 [inline]
RIP: 0010:__raw_spin_trylock include/linux/spinlock_api_smp.h:89 [inline]
RIP: 0010:_raw_spin_trylock+0xb3/0x130 kernel/locking/spinlock.c:138
Code: 44 24 20 85 c0 75 33 4c 8d 74 24 20 48 89 df be 04 00 00 00 e8 8e e1 53 fc 4c 89 f7 be 04 00 00 00 e8 81 e1 53 fc 8b 44 24 20 <b9> 01 00 00 00 ba 01 00 00 00 f0 0f b1 13 74 0b 31 c9 65 ff 0d ac
RSP: 0018:ffffc900007df580 EFLAGS: 00000097
RAX: 0000000000000000 RBX: ffffffff889bb314 RCX: ffffffff8587c77f
RDX: 0000000000000001 RSI: 0000000000000004 RDI: ffffc900007df5a0
RBP: ffffc900007df610 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffff520000fbeb4 R12: 1ffff920000fbeb0
R13: 0000000000000206 R14: ffffc900007df5a0 R15: dffffc0000000000
FS:  00007f08e8cd8c80(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000557c339f0b90 CR3: 000000010b7dc000 CR4: 00000000003526b0
DR0: 000000000000ffff DR1: 0000000000000001 DR2: 0000000000001000
DR3: 000000000000000f DR6: 00000000ffff0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 avc_reclaim_node security/selinux/avc.c:472 [inline]
 avc_alloc_node+0x15c/0x510 security/selinux/avc.c:506
 avc_insert security/selinux/avc.c:619 [inline]
 avc_compute_av+0xeb/0x770 security/selinux/avc.c:995
 avc_perm_nonode+0xc8/0x1b0 security/selinux/avc.c:1118
 avc_has_perm_noaudit+0x21c/0x360 security/selinux/avc.c:1161
 avc_has_perm+0xc2/0x220 security/selinux/avc.c:1196
 selinux_socket_unix_may_send+0x1d6/0x2a0 security/selinux/hooks.c:5051
 security_unix_may_send+0x4e/0xc0 security/security.c:4509
 unix_dgram_sendmsg+0xdab/0x1b70 net/unix/af_unix.c:2118
 sock_sendmsg_nosec net/socket.c:730 [inline]
 __sock_sendmsg net/socket.c:745 [inline]
 __sys_sendto+0x66a/0x6f0 net/socket.c:2217
 __do_sys_sendto net/socket.c:2229 [inline]
 __se_sys_sendto net/socket.c:2225 [inline]
 __x64_sys_sendto+0xe9/0x100 net/socket.c:2225
 x64_sys_call+0x2c2c/0x2ee0 arch/x86/include/generated/asm/syscalls_64.h:45
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0x58/0xf0 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x76/0x7e
RIP: 0033:0x7f08e8e28407
Code: 48 89 fa 4c 89 df e8 38 aa 00 00 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 1a 5b c3 0f 1f 84 00 00 00 00 00 48 8b 44 24 10 0f 05 <5b> c3 0f 1f 80 00 00 00 00 83 e2 39 83 fa 08 75 de e8 23 ff ff ff
RSP: 002b:00007fffc3acdc80 EFLAGS: 00000202 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 00007f08e8cd8c80 RCX: 00007f08e8e28407
RDX: 000000000000004c RSI: 00007fffc3acddc0 RDI: 0000000000000003
RBP: 00007fffc3ace1f0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000004000 R11: 0000000000000202 R12: 00007fffc3ace208
R13: 00007fffc3acddc0 R14: 0000000000000031 R15: 00007fffc3acddc0
 </TASK>