rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P6667/1:b..l
rcu: (detected by 1, t=10502 jiffies, g=14513, q=357 ncpus=2)
task:dhcpcd-run-hook state:R running task stack:24232 pid:6667 tgid:6667 ppid:5507 task_flags:0x400000 flags:0x00080001
Call Trace:
context_switch kernel/sched/core.c:5325 [inline]
__schedule+0x1798/0x4cc0 kernel/sched/core.c:6929
preempt_schedule_irq+0xb5/0x150 kernel/sched/core.c:7256
irqentry_exit+0x6f/0x90 kernel/entry/common.c:211
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697
RIP: 0010:ima_match_policy+0x186f/0x2150 security/integrity/ima/ima_policy.c:756
Code: 5c 24 6c 85 db 0f 84 ed 08 00 00 e8 bb 89 75 fd 44 89 f8 48 89 84 24 c8 00 00 00 49 bf 00 00 00 00 00 fc ff df 4c 8b 74 24 18 <4c> 89 f0 48 c1 e8 03 42 80 3c 38 00 74 08 4c 89 f7 e8 eb 2e db fd
RSP: 0018:ffffc9000c207360 EFLAGS: 00000293
RAX: ffffffff844a0830 RBX: 00000000de5e81e4 RCX: ffff88802e179e40
RDX: 0000000000000000 RSI: 000000000000ef53 RDI: 00000000de5e81e4
RBP: ffffc9000c2074f0 R08: 0000000000000000 R09: ffffffff844a013b
R10: ffffc9000c207680 R11: ffffc9000c207640 R12: ffffffff8e4021e0
R13: 0000000000000004 R14: ffffffff8d74afc0 R15: dffffc0000000000
ima_get_action+0x75/0xb0 security/integrity/ima/ima_api.c:199
process_measurement+0x27f/0x1a40 security/integrity/ima/ima_main.c:263
ima_file_check+0xd7/0x120 security/integrity/ima/ima_main.c:633
security_file_post_open+0xbb/0x290 security/security.c:3199
do_open fs/namei.c:3977 [inline]
path_openat+0x2f26/0x3830 fs/namei.c:4134
do_filp_open+0x1fa/0x410 fs/namei.c:4161
do_sys_openat2+0x121/0x1c0 fs/open.c:1437
do_sys_open fs/open.c:1452 [inline]
__do_sys_openat fs/open.c:1468 [inline]
__se_sys_openat fs/open.c:1463 [inline]
__x64_sys_openat+0x138/0x170 fs/open.c:1463
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xfa/0xfa0 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f1393d50407
RSP: 002b:00007fffb4afe810 EFLAGS: 00000202 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007f1393c00c80 RCX: 00007f1393d50407
RDX: 0000000000080000 RSI: 0000561b81fc7fc8 RDI: ffffffffffffff9c
RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000202 R12: 0000561b81fc7fc8
R13: 0000561b81fbf910 R14: 0000000000000000 R15: 0000000000000000
rcu: rcu_preempt kthread timer wakeup didn't happen for 10541 jiffies! g14513 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402
rcu: Possible timer handling issue on cpu=1 timer-softirq=8243
rcu: rcu_preempt kthread starved for 10542 jiffies! g14513 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 ->cpu=1
rcu: Unless rcu_preempt kthread gets sufficient CPU time, OOM is now expected behavior.
rcu: RCU grace-period kthread stack dump:
task:rcu_preempt state:I stack:27288 pid:16 tgid:16 ppid:2 task_flags:0x208040 flags:0x00080000
Call Trace:
context_switch kernel/sched/core.c:5325 [inline]
__schedule+0x1798/0x4cc0 kernel/sched/core.c:6929
__schedule_loop kernel/sched/core.c:7011 [inline]
schedule+0x165/0x360 kernel/sched/core.c:7026
schedule_timeout+0x12b/0x270 kernel/time/sleep_timeout.c:99
rcu_gp_fqs_loop+0x301/0x1540 kernel/rcu/tree.c:2083
rcu_gp_kthread+0x99/0x390 kernel/rcu/tree.c:2285
kthread+0x711/0x8a0 kernel/kthread.c:463
ret_from_fork+0x4bc/0x870 arch/x86/kernel/process.c:158
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
rcu: Stack dump where RCU GP kthread last ran:
CPU: 1 UID: 0 PID: 6668 Comm: syz.5.103 Not tainted syzkaller #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/18/2025
RIP: 0010:__sanitizer_cov_trace_pc+0x0/0x70 kernel/kcov.c:210
Code: 89 fb e8 23 00 00 00 48 8b 3d d4 73 b3 0b 48 89 de 5b e9 c3 77 5a 00 cc cc cc 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 0f 1e fa 48 8b 04 24 65 48 8b 0c 25 08 40 4b 92 65 8b 15 d8 9d
RSP: 0018:ffffc9000c216460 EFLAGS: 00000246
RAX: 0000000000000000 RBX: ffffc9000c216520 RCX: 1ffff110047b5a29
RDX: 0000000042b478c5 RSI: 0000000000000001 RDI: ffffc9000c216520
RBP: ffffc9000c216590 R08: 0000000000000000 R09: ffffffff8ae30d85
R10: dffffc0000000000 R11: fffffbfff1eb8aaf R12: ffff888023dad138
R13: dffffc0000000000 R14: 0000000000000001 R15: 0000000042b478c5
FS: 00007f3e020e96c0(0000) GS:ffff88812626c000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f87704af000 CR3: 000000004cdd8000 CR4: 00000000003526f0
Call Trace:
jhash2+0x18/0x2f0 include/linux/jhash.h:118
rht_key_get_hash include/linux/rhashtable.h:142 [inline]
rht_key_hashfn include/linux/rhashtable.h:159 [inline]
__rhashtable_lookup include/linux/rhashtable.h:604 [inline]
rhashtable_lookup include/linux/rhashtable.h:646 [inline]
tipc_sk_lookup+0x245/0x920 net/tipc/socket.c:2998
tipc_sk_rcv+0x3f9/0x2c30 net/tipc/socket.c:2490
tipc_node_xmit+0x1c9/0xe90 net/tipc/node.c:1701
tipc_node_xmit_skb+0xf4/0x150 net/tipc/node.c:1766
tipc_sk_rcv+0x2a4e/0x2c30 net/tipc/socket.c:2520
tipc_node_xmit+0x1c9/0xe90 net/tipc/node.c:1701
tipc_sk_push_backlog net/tipc/socket.c:1312 [inline]
tipc_sk_filter_connect net/tipc/socket.c:2253 [inline]
tipc_sk_filter_rcv+0x1cc6/0x31f0 net/tipc/socket.c:2362
tipc_sk_enqueue net/tipc/socket.c:2443 [inline]
tipc_sk_rcv+0x8a2/0x2c30 net/tipc/socket.c:2495
tipc_node_xmit+0x1c9/0xe90 net/tipc/node.c:1701
tipc_node_xmit_skb net/tipc/node.c:1766 [inline]
tipc_node_distr_xmit+0x2a0/0x3b0 net/tipc/node.c:1781
tipc_sk_backlog_rcv+0x1a1/0x230 net/tipc/socket.c:2410
sk_backlog_rcv include/net/sock.h:1158 [inline]
__release_sock+0x297/0x3a0 net/core/sock.c:3180
release_sock+0x5f/0x1f0 net/core/sock.c:3735
tipc_release+0x1712/0x2190 net/tipc/socket.c:650
__sock_release net/socket.c:662 [inline]
sock_close+0xc3/0x240 net/socket.c:1455
__fput+0x44c/0xa70 fs/file_table.c:468
task_work_run+0x1d4/0x260 kernel/task_work.c:227
resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
exit_to_user_mode_loop+0xe9/0x130 kernel/entry/common.c:43
exit_to_user_mode_prepare include/linux/irq-entry-common.h:225 [inline]
syscall_exit_to_user_mode_work include/linux/entry-common.h:175 [inline]
syscall_exit_to_user_mode include/linux/entry-common.h:210 [inline]
do_syscall_64+0x2bd/0xfa0 arch/x86/entry/syscall_64.c:100
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f3e0118eec9
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:00007f3e020e9038 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: 00000000000203a0 RBX: 00007f3e013e5fa0 RCX: 00007f3e0118eec9
RDX: 0000000000000000 RSI: 00002000000003c0 RDI: 0000000000000003
RBP: 00007f3e01211f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f3e013e6038 R14: 00007f3e013e5fa0 R15: 00007ffd0f923778