INFO: task syz.9.6999:21166 blocked for more than 122 seconds.
      Not tainted 6.12.30-syzkaller-gfc2476d0896a #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.9.6999      state:D stack:0     pid:21166 tgid:21163 ppid:20973  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: 0033:0x7fa08c18e9a9
RSP: 002b:00007fa08cf8d038 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4
RAX: ffffffffffffffda RBX: 00007fa08c3b6080 RCX: 00007fa08c18e9a9
RDX: 0000000000000000 RSI: ffffffffffffffff RDI: 0000000000000000
RBP: 00007fa08c210d69 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007fa08c3b6080 R15: 00007ffefcf70ea8
 </TASK>
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 37 Comm: khungtaskd Not tainted 6.12.30-syzkaller-gfc2476d0896a #0 e1e9364838a23ddd1cd40ddd4d9250930b5d8506
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: 27007 Comm: syz.6.8981 Not tainted 6.12.30-syzkaller-gfc2476d0896a #0 e1e9364838a23ddd1cd40ddd4d9250930b5d8506
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
RIP: 0010:check_region_inline mm/kasan/generic.c:171 [inline]
RIP: 0010:kasan_check_range+0x15/0x2a0 mm/kasan/generic.c:189
Code: cc cc cc cc cc b8 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 66 0f 1f 00 b0 01 48 85 f6 0f 84 c4 01 00 00 55 48 89 e5 41 57 <41> 56 41 55 41 54 53 4c 8d 04 37 49 39 f8 0f 82 68 02 00 00 49 89
RSP: 0018:ffffc90000eaf5d8 EFLAGS: 00000202
RAX: f3f3f304f1f1f101 RBX: ffff8881335832bc RCX: ffffffff8587c9df
RDX: 0000000000000001 RSI: 0000000000000004 RDI: ffff8881335832bc
RBP: ffffc90000eaf5e0 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffff520001d5ec4 R12: 1ffff920001d5ec0
R13: 1ffff110236e7126 R14: ffffc90000eaf620 R15: dffffc0000000000
FS:  00007f34def5c6c0(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffcab1bbd08 CR3: 000000014a652000 CR4: 00000000003526b0
Call Trace:
 <TASK>
 __kasan_check_write+0x18/0x20 mm/kasan/shadow.c:37
 instrument_atomic_read_write include/linux/instrumented.h:96 [inline]
 atomic_try_cmpxchg_acquire include/linux/atomic/atomic-instrumented.h:1300 [inline]
 queued_spin_lock include/asm-generic/qspinlock.h:111 [inline]
 do_raw_spin_lock include/linux/spinlock.h:187 [inline]
 __raw_spin_lock include/linux/spinlock_api_smp.h:134 [inline]
 _raw_spin_lock+0x7f/0x120 kernel/locking/spinlock.c:154
 spin_lock include/linux/spinlock.h:351 [inline]
 manage_oob net/unix/af_unix.c:2673 [inline]
 unix_stream_read_generic+0xcd2/0x22d0 net/unix/af_unix.c:2822
 unix_stream_recvmsg+0x16c/0x1c0 net/unix/af_unix.c:3007
 sock_recvmsg_nosec net/socket.c:1052 [inline]
 sock_recvmsg+0x219/0x270 net/socket.c:1074
 ____sys_recvmsg+0x1ca/0x460 net/socket.c:2829
 ___sys_recvmsg+0x1b6/0x510 net/socket.c:2871
 __sys_recvmsg net/socket.c:2901 [inline]
 __do_sys_recvmsg net/socket.c:2911 [inline]
 __se_sys_recvmsg net/socket.c:2908 [inline]
 __x64_sys_recvmsg+0x1e8/0x2c0 net/socket.c:2908
 x64_sys_call+0xdb5/0x2ee0 arch/x86/include/generated/asm/syscalls_64.h:48
 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: 0033:0x7f34de18e9a9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f34def5c038 EFLAGS: 00000246 ORIG_RAX: 000000000000002f
RAX: ffffffffffffffda RBX: 00007f34de3b5fa0 RCX: 00007f34de18e9a9
RDX: 0000000000000002 RSI: 00002000000000c0 RDI: 0000000000000004
RBP: 00007f34de210d69 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f34de3b5fa0 R15: 00007fff99c32bc8
 </TASK>