INFO: task syz.6.3709:12386 blocked for more than 122 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.6.3709      state:D stack:0     pid:12386 tgid:12385 ppid:8656   flags:0x00004004
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5945 [inline]
 __schedule+0x1322/0x1df0 kernel/sched/core.c:7791
 __schedule_loop kernel/sched/core.c:7872 [inline]
 schedule+0xc6/0x240 kernel/sched/core.c:7887
 super_lock+0x150/0x300 fs/super.c:115
 super_lock_shared fs/super.c:140 [inline]
 iterate_supers+0x8a/0x560 fs/super.c:934
 quota_sync_all fs/quota/quota.c:69 [inline]
 __do_sys_quotactl fs/quota/quota.c:938 [inline]
 __se_sys_quotactl+0x308/0x7d0 fs/quota/quota.c:917
 __x64_sys_quotactl+0x9f/0xc0 fs/quota/quota.c:917
 x64_sys_call+0x2818/0x2ee0 arch/x86/include/generated/asm/syscalls_64.h:180
 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: 0033:0x7f2c8bf8ebe9
RSP: 002b:00007f2c8cd1e038 EFLAGS: 00000246 ORIG_RAX: 00000000000000b3
RAX: ffffffffffffffda RBX: 00007f2c8c1c5fa0 RCX: 00007f2c8bf8ebe9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff80000100
RBP: 00007f2c8c011e19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f2c8c1c6038 R14: 00007f2c8c1c5fa0 R15: 00007ffc27af36e8
 </TASK>
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 37 Comm: khungtaskd Not tainted syzkaller #0 7fe4e484688c438396c810d5bd2610fd3644ee8a
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
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: 148 Comm: dhcpcd Not tainted syzkaller #0 7fe4e484688c438396c810d5bd2610fd3644ee8a
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
RIP: 0010:__sanitizer_cov_trace_switch+0x0/0x130 kernel/kcov.c:327
Code: 7c 0a 10 48 89 74 0a 18 48 89 44 0a 20 5d c3 cc cc cc cc cc 66 0f 1f 44 00 00 b8 20 4e d4 0c 90 90 90 90 90 90 90 90 90 90 90 <f3> 0f 1e fa 48 8b 06 48 8b 4e 08 48 83 c1 f8 48 c1 c1 3d 48 83 f9
RSP: 0018:ffffc90000f4f1a0 EFLAGS: 00000246
RAX: 0000000000000000 RBX: 000000000000006f RCX: ffff88811dd24c00
RDX: dffffc0000000000 RSI: ffffffff87c22e60 RDI: 000000000000006f
RBP: ffffc90000f4f218 R08: ffff88811dd24c00 R09: 0000000000000002
R10: 0000000000000025 R11: 0000000000000000 R12: ffffffff862d7024
R13: 0000000000000000 R14: ffffffff862d7024 R15: dffffc0000000000
FS:  00007f4cf5f57740(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 000000011dc9a000 CR4: 00000000003526b0
Call Trace:
 <TASK>
 vsnprintf+0xe6/0x1aa0 lib/vsprintf.c:2755
 audit_log_vformat+0x342/0x990 kernel/audit.c:1977
 audit_log_format+0xdb/0x140 kernel/audit.c:2011
 avc_audit_pre_callback+0x218/0x2a0 security/selinux/avc.c:-1
 common_lsm_audit+0x10c/0x1860 security/lsm_audit.c:456
 slow_avc_audit+0x18d/0x1f0 security/selinux/avc.c:781
 avc_audit security/selinux/include/avc.h:127 [inline]
 avc_has_perm+0x1cd/0x220 security/selinux/avc.c:1199
 sock_has_perm security/selinux/hooks.c:4619 [inline]
 selinux_socket_recvmsg+0x284/0x380 security/selinux/hooks.c:4974
 security_socket_recvmsg+0x64/0xf0 security/security.c:4664
 sock_recvmsg+0x64/0x270 net/socket.c:1072
 ____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: 0033:0x7f4cf5fe1407
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:00007ffe1e333a80 EFLAGS: 00000202 ORIG_RAX: 000000000000002f
RAX: ffffffffffffffda RBX: 00007f4cf5f57740 RCX: 00007f4cf5fe1407
RDX: 0000000000000000 RSI: 00007ffe1e333b10 RDI: 0000000000000010
RBP: 00007ffe1e335f50 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000202 R12: 000055f94a788930
R13: 00007ffe1e333bd0 R14: 00007ffe1e333b1c R15: 00007ffe1e335d00
 </TASK>