INFO: task syz.8.2357:7544 blocked for more than 122 seconds.
      Not tainted 6.12.23-syzkaller-gd9fd901baa98 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.8.2357      state:D stack:0     pid:7544  tgid:7543  ppid:5777   flags:0x00004004
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5924 [inline]
 __schedule+0x145b/0x1f10 kernel/sched/core.c:7750
 __schedule_loop kernel/sched/core.c:7831 [inline]
 schedule+0xc6/0x240 kernel/sched/core.c:7846
 super_lock+0x150/0x300 fs/super.c:115
 super_lock_shared fs/super.c:140 [inline]
 iterate_supers+0x8a/0x560 fs/super.c:934
 ksys_sync+0x95/0x160 fs/sync.c:103
 __ia32_sys_sync+0x12/0x20 fs/sync.c:114
 x64_sys_call+0x2a58/0x2ee0 arch/x86/include/generated/asm/syscalls_64.h:163
 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: 0033:0x7fcaba78e929
RSP: 002b:00007fcabb6be038 EFLAGS: 00000246 ORIG_RAX: 00000000000000a2
RAX: ffffffffffffffda RBX: 00007fcaba9b5fa0 RCX: 00007fcaba78e929
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007fcaba9b5fa0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007fcaba9b5fa0 R15: 00007ffcfabbadc8
 </TASK>
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 37 Comm: khungtaskd Not tainted 6.12.23-syzkaller-gd9fd901baa98 #0 f1acc3ef52b3e732a05c4f7a2560722db90bb473
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:229 [inline]
 watchdog+0xd8f/0xed0 kernel/hung_task.c:385
 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: 11900 Comm: syz-executor Not tainted 6.12.23-syzkaller-gd9fd901baa98 #0 f1acc3ef52b3e732a05c4f7a2560722db90bb473
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
RIP: 0010:__rcu_read_lock+0x34/0x60 kernel/rcu/tree_plugin.h:419
Code: 48 8b 1c 25 40 e9 04 00 48 81 c3 c4 04 00 00 48 89 d8 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df 0f b6 04 08 84 c0 75 0a ff 03 <5b> 5d c3 cc cc cc cc cc 89 d9 80 e1 07 80 c1 03 38 c1 7c ea 48 89
RSP: 0018:ffffc900103ef868 EFLAGS: 00000002
RAX: 0000000000000000 RBX: ffff88813c5e84c4 RCX: dffffc0000000000
RDX: ffff88813c5e8000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffffc900103ef870 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffff5200207df00 R12: 0000000000000001
R13: 0000000000000202 R14: 00000000000000f2 R15: 000000000000007f
FS:  000055555c8eb500(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fa451b80ab8 CR3: 0000000139d2a000 CR4: 00000000003526b0
DR0: 0000000000000007 DR1: 000000000000009b DR2: 00040000ffffffff
DR3: 0000000000000009 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 rcu_read_lock include/linux/rcupdate.h:847 [inline]
 avc_reclaim_node security/selinux/avc.c:475 [inline]
 avc_alloc_node+0x186/0x510 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
 sock_has_perm security/selinux/hooks.c:4619 [inline]
 selinux_socket_setsockopt+0x27e/0x390 security/selinux/hooks.c:4991
 security_socket_setsockopt+0x56/0xd0 security/security.c:4722
 do_sock_setsockopt+0xc9/0x400 net/socket.c:2314
 __sys_setsockopt net/socket.c:2360 [inline]
 __do_sys_setsockopt net/socket.c:2369 [inline]
 __se_sys_setsockopt net/socket.c:2366 [inline]
 __x64_sys_setsockopt+0x1b8/0x250 net/socket.c:2366
 x64_sys_call+0x2adc/0x2ee0 arch/x86/include/generated/asm/syscalls_64.h:55
 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: 0033:0x7fa45199081a
Code: ff ff ff c3 0f 1f 40 00 48 c7 c2 a8 ff ff ff f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 49 89 ca b8 36 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 06 c3 0f 1f 44 00 00 48 c7 c2 a8 ff ff ff f7
RSP: 002b:00007ffcc10921c8 EFLAGS: 00000202 ORIG_RAX: 0000000000000036
RAX: ffffffffffffffda RBX: 00007ffcc1092250 RCX: 00007fa45199081a
RDX: 0000000000000040 RSI: 0000000000000029 RDI: 0000000000000003
RBP: 0000000000000003 R08: 0000000000000558 R09: 0079746972756365
R10: 00007fa451b80a60 R11: 0000000000000202 R12: 00007fa451b80a00
R13: 00007ffcc10921ec R14: 0000000000000000 R15: 00007fa451b81e40
 </TASK>