INFO: task syz.1.2318:7214 blocked for more than 122 seconds.
Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.1.2318 state:D stack:0 pid:7214 tgid:7213 ppid:289 flags:0x00004004
Call Trace:
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
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: 0033:0x7fd28518f6c9
RSP: 002b:00007fd2860b0038 EFLAGS: 00000246 ORIG_RAX: 00000000000000a2
RAX: ffffffffffffffda RBX: 00007fd2853e5fa0 RCX: 00007fd28518f6c9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007fd2853e5fa0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fd2853e6038 R14: 00007fd2853e5fa0 R15: 00007ffec0a5f8e8
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 37 Comm: khungtaskd Not tainted syzkaller #0 0b5ffdee5fcd2f7749818d1ff954e9c21353764e
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
Call Trace:
__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+0x2ca/0x370 kernel/kthread.c:389
ret_from_fork+0x67/0xa0 arch/x86/kernel/process.c:153
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 99 Comm: klogd Not tainted syzkaller #0 0b5ffdee5fcd2f7749818d1ff954e9c21353764e
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
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:ffffc90000e7f6f8 EFLAGS: 00000002
RAX: f3f3f304f1f1f101 RBX: ffffffff889d4e8c RCX: ffffffff858f7812
RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffffffff889d4e8c
RBP: ffffc90000e7f700 R08: ffffffff889d546b R09: 1ffffffff113aa8d
R10: dffffc0000000000 R11: fffffbfff113aa8e R12: 1ffff920001cfee4
R13: 0000000000000202 R14: 0000000000000089 R15: dffffc0000000000
FS: 00007f4e4b250c80(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055556bb124a8 CR3: 000000010b776000 CR4: 00000000003526b0
Call Trace:
__kasan_check_read+0x15/0x20 mm/kasan/shadow.c:31
instrument_atomic_read include/linux/instrumented.h:68 [inline]
atomic_read include/linux/atomic/atomic-instrumented.h:32 [inline]
queued_spin_trylock include/asm-generic/qspinlock.h:92 [inline]
do_raw_spin_trylock include/linux/spinlock.h:193 [inline]
__raw_spin_trylock include/linux/spinlock_api_smp.h:89 [inline]
_raw_spin_trylock+0x72/0x130 kernel/locking/spinlock.c:138
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
sock_has_perm security/selinux/hooks.c:4625 [inline]
selinux_socket_sendmsg+0x284/0x380 security/selinux/hooks.c:4974
security_socket_sendmsg+0x56/0xd0 security/security.c:4647
__sock_sendmsg net/socket.c:742 [inline]
__sys_sendto+0x3c4/0x6f0 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: 0033:0x7f4e4b3a0407
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:00007ffcea746490 EFLAGS: 00000202 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 00007f4e4b250c80 RCX: 00007f4e4b3a0407
RDX: 0000000000000050 RSI: 00007ffcea7465d0 RDI: 0000000000000003
RBP: 00007ffcea746a00 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000004000 R11: 0000000000000202 R12: 00007ffcea746a18
R13: 00007ffcea7465d0 R14: 0000000000000035 R15: 00007ffcea7465d0