rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	Tasks blocked on level-0 rcu_node (CPUs 0-1): P4178/1:b..l
	(detected by 1, t=10502 jiffies, g=9417, q=122)
task:udevd           state:R  running task     stack:25008 pid: 4178 ppid:  3561 flags:0x00004002
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5049 [inline]
 __schedule+0x11ef/0x43c0 kernel/sched/core.c:6395
 preempt_schedule_irq+0xbb/0x160 kernel/sched/core.c:6799
 irqentry_exit+0x63/0x70 kernel/entry/common.c:432
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:676
RIP: 0010:check_kcov_mode kernel/kcov.c:183 [inline]
RIP: 0010:__sanitizer_cov_trace_pc+0x32/0x60 kernel/kcov.c:206
Code: a4 4e 89 7e 65 8b 15 a5 4e 89 7e 81 e2 00 01 ff 00 74 11 81 fa 00 01 00 00 75 35 83 b9 34 16 00 00 00 74 2c 8b 91 10 16 00 00 <83> fa 02 75 21 48 8b 91 18 16 00 00 48 8b 32 48 8d 7e 01 8b 89 14
RSP: 0018:ffffc90002e9f3d8 EFLAGS: 00000246
RAX: ffffffff83adf64f RBX: 0000000000000000 RCX: ffff8880799f8000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff8be36c58
RBP: ffffc90002e9f550 R08: dffffc0000000000 R09: 1ffffffff203a818
R10: dffffc0000000000 R11: fffffbfff203a819 R12: ffffffff8be36bf8
R13: 0000000000000000 R14: ffffffff8be36bf8 R15: ffffffff8be36c0c
 ima_match_rules security/integrity/ima/ima_policy.c:-1 [inline]
 ima_match_policy+0xd4f/0x1a20 security/integrity/ima/ima_policy.c:712
 ima_get_action+0x71/0xa0 security/integrity/ima/ima_api.c:198
 process_measurement+0x2d2/0x1ba0 security/integrity/ima/ima_main.c:228
 ima_file_check+0xc7/0x110 security/integrity/ima/ima_main.c:533
 do_open fs/namei.c:3618 [inline]
 path_openat+0x27a8/0x2fa0 fs/namei.c:3750
 do_filp_open+0x1e2/0x410 fs/namei.c:3777
 do_sys_openat2+0x150/0x4b0 fs/open.c:1255
 do_sys_open fs/open.c:1271 [inline]
 __do_sys_openat fs/open.c:1287 [inline]
 __se_sys_openat fs/open.c:1282 [inline]
 __x64_sys_openat+0x135/0x160 fs/open.c:1282
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f25802a0407
RSP: 002b:00007ffd73ab4bc0 EFLAGS: 00000202 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007f25801b2880 RCX: 00007f25802a0407
RDX: 0000000000080000 RSI: 00007ffd73ab4d30 RDI: ffffffffffffff9c
RBP: 0000000000000008 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000202 R12: 0000559c81ecd7f5
R13: 0000559c81ecd7f5 R14: 0000000000000001 R15: 00007ffd73ab95b0
 </TASK>
rcu: rcu_preempt kthread starved for 10530 jiffies! g9417 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=0
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:R  running task     stack:28016 pid:   15 ppid:     2 flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5049 [inline]
 __schedule+0x11ef/0x43c0 kernel/sched/core.c:6395
 schedule+0x11b/0x1e0 kernel/sched/core.c:6478
 schedule_timeout+0x184/0x2d0 kernel/time/timer.c:2117
 rcu_gp_fqs_loop+0x2be/0x11d0 kernel/rcu/tree.c:1972
 rcu_gp_kthread+0x9b/0x370 kernel/rcu/tree.c:2145
 kthread+0x436/0x520 kernel/kthread.c:334
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287
 </TASK>
rcu: Stack dump where RCU GP kthread last ran:
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 1420 Comm: aoe_tx0 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
RIP: 0010:kasan_check_range+0x1b7/0x290 mm/kasan/generic.c:189
Code: 49 8d 5f 07 4d 85 ff 49 0f 49 df 48 83 e3 f8 49 29 df 74 0e 41 80 3b 00 75 69 49 ff c3 49 ff cf 75 f2 5b 41 5c 41 5e 41 5f 5d <c3> 45 84 ff 0f 85 91 00 00 00 41 f7 c7 00 ff 00 00 0f 85 89 00 00
RSP: 0018:ffffc90000007858 EFLAGS: 00000056
RAX: 0000000000000001 RBX: ffff88802337d940 RCX: ffffffff815db944
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff901d40c0
RBP: 0000000000000000 R08: ffffffff901d40c7 R09: 1ffffffff203a818
R10: dffffc0000000000 R11: fffffbfff203a819 R12: 0000000000000001
R13: dffffc0000000000 R14: ffff88802337e4d0 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fac0feb16c8 CR3: 0000000063f96000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 instrument_atomic_read include/linux/instrumented.h:71 [inline]
 test_bit include/asm-generic/bitops/instrumented-non-atomic.h:134 [inline]
 hlock_class kernel/locking/lockdep.c:197 [inline]
 mark_lock+0x94/0x320 kernel/locking/lockdep.c:4569
 mark_usage kernel/locking/lockdep.c:4483 [inline]
 __lock_acquire+0xc20/0x7d10 kernel/locking/lockdep.c:4966
 lock_acquire+0x19e/0x400 kernel/locking/lockdep.c:5623
 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
 _raw_spin_lock_irqsave+0xb0/0x100 kernel/locking/spinlock.c:162
 debug_object_deactivate+0x62/0x390 lib/debugobjects.c:749
 debug_hrtimer_deactivate kernel/time/hrtimer.c:415 [inline]
 __run_hrtimer kernel/time/hrtimer.c:1653 [inline]
 __hrtimer_run_queues+0x2b9/0xb70 kernel/time/hrtimer.c:1749
 hrtimer_interrupt+0x3bb/0x8d0 kernel/time/hrtimer.c:1811
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1097 [inline]
 __sysvec_apic_timer_interrupt+0x137/0x4a0 arch/x86/kernel/apic/apic.c:1114
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1108 [inline]
 sysvec_apic_timer_interrupt+0x9b/0xc0 arch/x86/kernel/apic/apic.c:1108
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:676
RIP: 0010:console_trylock_spinning+0x301/0x370 kernel/printk/printk.c:1909
Code: 85 db 74 89 e8 50 e7 18 00 fb 31 c0 eb 48 e8 46 e7 18 00 e8 01 2f 5c 08 48 85 db 74 d1 e8 37 e7 18 00 fb 48 c7 c7 e0 35 31 8c <31> f6 ba 01 00 00 00 31 c9 41 b8 01 00 00 00 45 31 c9 68 da 39 60
RSP: 0018:ffffc90005d57500 EFLAGS: 00000293
RAX: ffffffff816039d9 RBX: 0000000000000200 RCX: ffff88802337d940
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff8c3135e0
RBP: ffffc90005d575d0 R08: ffffffff901d41bf R09: 1ffffffff203a837
R10: dffffc0000000000 R11: fffffbfff203a838 R12: dffffc0000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 1ffff92000baaea0
 vprintk_emit+0xa7/0x150 kernel/printk/printk.c:2273
 dev_vprintk_emit+0x2e1/0x380 drivers/base/core.c:4638
 dev_printk_emit+0xeb/0x140 drivers/base/core.c:4649
 __netdev_printk+0x2ef/0x3d0 net/core/dev.c:11530
 netdev_warn+0x11b/0x170 net/core/dev.c:11583
 ieee802154_subif_start_xmit+0xbd/0x100 net/mac802154/tx.c:125
 __netdev_start_xmit include/linux/netdevice.h:5036 [inline]
 netdev_start_xmit include/linux/netdevice.h:5050 [inline]
 xmit_one net/core/dev.c:3662 [inline]
 dev_hard_start_xmit+0x2a5/0x7e0 net/core/dev.c:3678
 sch_direct_xmit+0x25a/0x4b0 net/sched/sch_generic.c:345
 __dev_xmit_skb net/core/dev.c:3897 [inline]
 __dev_queue_xmit+0x179f/0x2f80 net/core/dev.c:4266
 tx+0x65/0x160 drivers/block/aoe/aoenet.c:63
 kthread+0x1e2/0x3f0 drivers/block/aoe/aoecmd.c:1238
 kthread+0x436/0x520 kernel/kthread.c:334
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287
 </TASK>
vkms_vblank_simulate: vblank timer overrun