INFO: task syz.1.2049:6706 blocked for more than 122 seconds.
Not tainted 6.12.38-syzkaller-g138082a93991 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.1.2049 state:D stack:0 pid:6706 tgid:6705 ppid:6505 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
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: 0033:0x7f288f58ebe9
RSP: 002b:00007f2890368038 EFLAGS: 00000246 ORIG_RAX: 00000000000000b3
RAX: ffffffffffffffda RBX: 00007f288f7b5fa0 RCX: 00007f288f58ebe9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff80000102
RBP: 00007f288f611e19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f288f7b6038 R14: 00007f288f7b5fa0 R15: 00007ffe04988df8
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 37 Comm: khungtaskd Not tainted 6.12.38-syzkaller-g138082a93991 #0 b2f296d1542f966b973d0de4c7d8786db195f895
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
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: 109 Comm: udevd Not tainted 6.12.38-syzkaller-g138082a93991 #0 b2f296d1542f966b973d0de4c7d8786db195f895
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
RIP: 0010:avtab_node_cmp security/selinux/ss/avtab.c:103 [inline]
RIP: 0010:avtab_search_node+0x222/0x560 security/selinux/ss/avtab.c:189
Code: 45 0f b7 f4 45 0f b7 ed 0f b7 45 d4 89 45 d4 44 89 6d d0 48 89 d8 48 c1 e8 03 42 0f b6 04 38 84 c0 0f 85 91 01 00 00 0f b7 03 <44> 0f b7 e0 44 89 f7 44 89 e6 e8 6f 75 14 ff 66 45 39 e6 0f 85 c0
RSP: 0018:ffffc90000e5f1f0 EFLAGS: 00000246
RAX: 00000000000004c3 RBX: ffff888109befb90 RCX: dffffc0000000000
RDX: 00000000000007ff RSI: dffffc0000000000 RDI: ffffc90000e5f482
RBP: ffffc90000e5f230 R08: ffff88810c77b900 R09: 0000000000000003
R10: 0000000000000004 R11: 0000000000000000 R12: 000000000000013f
R13: 0000000000000259 R14: 000000000000013f R15: dffffc0000000000
FS: 00007f02f7bb1880(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f59b9f82d58 CR3: 000000010cb56000 CR4: 00000000003526b0
DR0: 000000000000000a DR1: 0000000000000002 DR2: 0000000000000003
DR3: 0000000080000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Call Trace:
context_struct_compute_av+0x587/0x1680 security/selinux/ss/services.c:656
security_compute_av+0x38d/0xfa0 security/selinux/ss/services.c:1146
avc_compute_av+0x89/0x770 security/selinux/avc.c:994
avc_perm_nonode+0xc8/0x1b0 security/selinux/avc.c:1118
avc_has_perm_noaudit+0x21c/0x360 security/selinux/avc.c:1161
selinux_inode_permission+0x364/0x5a0 security/selinux/hooks.c:3118
security_inode_permission+0xaa/0x120 security/security.c:2324
inode_permission+0xf3/0x4c0 fs/namei.c:543
may_lookup fs/namei.c:1760 [inline]
link_path_walk+0x221/0xec0 fs/namei.c:2366
path_openat+0x281/0x34b0 fs/namei.c:3929
do_filp_open+0x1c6/0x3e0 fs/namei.c:3960
do_sys_openat2+0x12c/0x1c0 fs/open.c:1438
do_sys_open fs/open.c:1453 [inline]
__do_sys_openat fs/open.c:1469 [inline]
__se_sys_openat fs/open.c:1464 [inline]
__x64_sys_openat+0x13a/0x170 fs/open.c:1464
x64_sys_call+0xe69/0x2ee0 arch/x86/include/generated/asm/syscalls_64.h:258
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: 0033:0x7f02f7515c3a
Code: 41 89 f2 48 89 54 24 e0 41 83 e2 40 75 2a 89 f0 f7 d0 a9 00 00 41 00 74 1f 89 f2 b8 01 01 00 00 48 89 fe bf 9c ff ff ff 0f 05 <48> 3d 00 f0 ff ff 77 2e c3 0f 1f 44 00 00 48 8d 44 24 08 c7 44 24
RSP: 002b:00007ffe997a3e58 EFLAGS: 00000206 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00005646e51e15d0 RCX: 00007f02f7515c3a
RDX: 0000000000090800 RSI: 00005646e51f25e0 RDI: 00000000ffffff9c
RBP: 00005646e51f25e0 R08: 00000000000001d0 R09: 0000000000000004
R10: 0000000000000000 R11: 0000000000000206 R12: 00005646e51d9e10
R13: 0000000000000100 R14: 0000000000000000 R15: 00007ffe997a40a0