rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	0-...!: (2 ticks this GP) idle=771c/1/0x4000000000000000 softirq=25103/25103 fqs=0
rcu: 	(detected by 1, t=10506 jiffies, g=28261, q=439 ncpus=2)
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 8064 Comm: syz-executor.3 Not tainted 6.10.0-rc4-next-20240621-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024
RIP: 0010:__lock_acquire+0x13e5/0x2000 kernel/locking/lockdep.c:5226
Code: 9e 09 00 00 41 8b 45 00 ff c0 41 89 45 00 83 f8 30 0f 83 69 02 00 00 3b 05 98 d4 8e 11 0f 87 c8 02 00 00 bf 01 00 00 00 89 f8 <48> 81 c4 90 00 00 00 5b 41 5c 41 5d 41 5e 41 5f 5d c3 cc cc cc cc
RSP: 0018:ffffc90000007a30 EFLAGS: 00000097
RAX: 0000000000000001 RBX: ffff8880217364d0 RCX: e0bfeabe9c324300
RDX: dffffc0000000000 RSI: 0000000000000008 RDI: 0000000000000001
RBP: 869b07a2d75873f1 R08: ffffffff92fe48bf R09: 1ffffffff25fc917
R10: dffffc0000000000 R11: fffffbfff25fc918 R12: ffff888021735a00
R13: ffff8880217364d8 R14: 1ffff110042e6caa R15: 0000000000000001
FS:  00007fdec2ff16c0(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b31e28000 CR3: 0000000061866000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <IRQ>
 lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5816
 __raw_spin_lock include/linux/spinlock_api_smp.h:133 [inline]
 _raw_spin_lock+0x2e/0x40 kernel/locking/spinlock.c:154
 spin_lock include/linux/spinlock.h:351 [inline]
 advance_sched+0xab/0xca0 net/sched/sch_taprio.c:924
 __run_hrtimer kernel/time/hrtimer.c:1687 [inline]
 __hrtimer_run_queues+0x59b/0xd50 kernel/time/hrtimer.c:1751
 hrtimer_interrupt+0x396/0x990 kernel/time/hrtimer.c:1813
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1032 [inline]
 __sysvec_apic_timer_interrupt+0x110/0x3f0 arch/x86/kernel/apic/apic.c:1049
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1043 [inline]
 sysvec_apic_timer_interrupt+0xa1/0xc0 arch/x86/kernel/apic/apic.c:1043
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:assoc_array_find+0x0/0x230 lib/assoc_array.c:307
Code: 5c 41 5d 41 5e 41 5f 5d c3 cc cc cc cc 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 <f3> 0f 1e fa 55 48 89 e5 41 57 41 56 41 55 41 54 53 48 83 e4 e0 48
RSP: 0018:ffffc90004b275f8 EFLAGS: 00010246
RAX: 0000000000000002 RBX: 0000000000000000 RCX: dffffc0000000000
RDX: ffffc90004b27880 RSI: ffffffff8c194da0 RDI: ffff8880182de678
RBP: ffffc90004b277c8 R08: ffffffff845f6980 R09: 0000000000000030
R10: dffffc0000000000 R11: fffff52000964eb0 R12: ffffc90004b278a0
R13: dffffc0000000000 R14: ffff8880182de678 R15: ffffc90004b276a0
 search_keyring security/keys/keyring.c:651 [inline]
 search_nested_keyrings+0x54e/0x1190 security/keys/keyring.c:718
 keyring_search_rcu+0x198/0x290 security/keys/keyring.c:922
 keyring_search+0x3dd/0x5b0 security/keys/keyring.c:964
 look_up_user_keyrings+0x2d3/0x640 security/keys/process_keys.c:102
 lookup_user_key+0x3ca/0x1500 security/keys/process_keys.c:670
 keyctl_get_security+0xb2/0x340 security/keys/keyctl.c:1570
 __do_sys_keyctl security/keys/keyctl.c:1951 [inline]
 __se_sys_keyctl+0x1e8/0xa50 security/keys/keyctl.c:1874
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fdec227d0a9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 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 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fdec2ff10c8 EFLAGS: 00000246 ORIG_RAX: 00000000000000fa
RAX: ffffffffffffffda RBX: 00007fdec23b3f80 RCX: 00007fdec227d0a9
RDX: 0000000000000000 RSI: fffffffffffffffd RDI: 0000000000000011
RBP: 00007fdec22ec074 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007fdec23b3f80 R15: 00007fffe9fccba8
 </TASK>
rcu: rcu_preempt kthread timer wakeup didn't happen for 10505 jiffies! g28261 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402
rcu: 	Possible timer handling issue on cpu=0 timer-softirq=15603
rcu: rcu_preempt kthread starved for 10506 jiffies! g28261 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 ->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:I stack:26448 pid:17    tgid:17    ppid:2      flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5249 [inline]
 __schedule+0x17e8/0x4a20 kernel/sched/core.c:6594
 __schedule_loop kernel/sched/core.c:6671 [inline]
 schedule+0x14b/0x320 kernel/sched/core.c:6686
 schedule_timeout+0x1be/0x310 kernel/time/timer.c:2581
 rcu_gp_fqs_loop+0x2df/0x1330 kernel/rcu/tree.c:2020
 rcu_gp_kthread+0xa7/0x3b0 kernel/rcu/tree.c:2222
 kthread+0x2f0/0x390 kernel/kthread.c:389
 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:144
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>