rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	1-...!: (0 ticks this GP) idle=5324/1/0x4000000000000000 softirq=28012/28012 fqs=0
rcu: 	(detected by 0, t=10506 jiffies, g=22617, q=264 ncpus=2)
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 8883 Comm: syz.4.720 Not tainted 6.13.0-rc5-syzkaller-00163-gab75170520d4 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
RIP: 0010:lockdep_recursion_inc kernel/locking/lockdep.c:462 [inline]
RIP: 0010:lock_release+0x17b/0x6f0 kernel/locking/lockdep.c:5869
Code: 00 00 00 fc ff df 4c 89 e2 48 c1 ea 03 80 3c 02 00 0f 85 19 05 00 00 49 81 3c 24 a0 17 7c 93 0f 84 65 02 00 00 9c 8f 04 24 fa <48> c7 c7 a0 dc 6c 8b e8 49 25 b3 09 48 89 ea 83 e5 07 48 b8 00 00
RSP: 0018:ffffc90000a18ca8 EFLAGS: 00000002
RAX: dffffc0000000000 RBX: 1ffff92000143197 RCX: ffffffff8176b9d9
RDX: 1ffff11002446660 RSI: 0000000000000000 RDI: ffff8880265b535c
RBP: ffffffff905f6c74 R08: 0000000000000000 R09: fffffbfff20be72a
R10: ffffffff905f3957 R11: 0000000000000000 R12: ffff888012233300
R13: ffff8880364f8400 R14: ffff8880265b4880 R15: ffff8880375de800
FS:  00007f5f98df66c0(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f5f98dd3ff0 CR3: 000000002aafe000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <IRQ>
 __raw_spin_unlock include/linux/spinlock_api_smp.h:141 [inline]
 _raw_spin_unlock+0x16/0x50 kernel/locking/spinlock.c:186
 spin_unlock include/linux/spinlock.h:391 [inline]
 advance_sched+0x611/0xc60 net/sched/sch_taprio.c:981
 __run_hrtimer kernel/time/hrtimer.c:1739 [inline]
 __hrtimer_run_queues+0x20a/0xae0 kernel/time/hrtimer.c:1803
 hrtimer_interrupt+0x392/0x8e0 kernel/time/hrtimer.c:1865
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1038 [inline]
 __sysvec_apic_timer_interrupt+0x10f/0x400 arch/x86/kernel/apic/apic.c:1055
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1049 [inline]
 sysvec_apic_timer_interrupt+0x9f/0xc0 arch/x86/kernel/apic/apic.c:1049
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:check_kcov_mode kernel/kcov.c:185 [inline]
RIP: 0010:__sanitizer_cov_trace_pc+0x3b/0x70 kernel/kcov.c:217
Code: 69 7e a9 00 01 ff 00 48 8b 34 24 74 1d f6 c4 01 74 43 a9 00 00 0f 00 75 3c a9 00 00 f0 00 75 35 8b 82 1c 16 00 00 85 c0 74 2b <8b> 82 f8 15 00 00 83 f8 02 75 20 48 8b 8a 00 16 00 00 8b 92 fc 15
RSP: 0018:ffffc9000d4979c8 EFLAGS: 00000246
RAX: 0000000080000000 RBX: ffff88807dba6000 RCX: 0000000000000002
RDX: ffff8880265b4880 RSI: ffffffff89d2890d RDI: ffff88807dba6000
RBP: ffffc9000d497d98 R08: 0000000000000005 R09: 0000000000000000
R10: 000000000000091e R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000002 R14: ffffc9000d497ddc R15: 0000000000000002
 unix_dgram_recvmsg+0x1d/0x110 net/unix/af_unix.c:2530
 sock_recvmsg_nosec net/socket.c:1033 [inline]
 ____sys_recvmsg+0x5f8/0x6b0 net/socket.c:2801
 ___sys_recvmsg+0x115/0x1a0 net/socket.c:2845
 do_recvmmsg+0x2f8/0x740 net/socket.c:2940
 __sys_recvmmsg net/socket.c:3014 [inline]
 __do_sys_recvmmsg net/socket.c:3037 [inline]
 __se_sys_recvmmsg net/socket.c:3030 [inline]
 __x64_sys_recvmmsg+0x239/0x290 net/socket.c:3030
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f5f9af85d29
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:00007f5f98df6038 EFLAGS: 00000246 ORIG_RAX: 000000000000012b
RAX: ffffffffffffffda RBX: 00007f5f9b176080 RCX: 00007f5f9af85d29
RDX: 0000000000010106 RSI: 00000000200000c0 RDI: 0000000000000007
RBP: 00007f5f9b001b08 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000002 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f5f9b176080 R15: 00007ffef6431e48
 </TASK>
rcu: rcu_preempt kthread timer wakeup didn't happen for 10505 jiffies! g22617 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402
rcu: 	Possible timer handling issue on cpu=1 timer-softirq=16004
rcu: rcu_preempt kthread starved for 10506 jiffies! g22617 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:27600 pid:17    tgid:17    ppid:2      flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5369 [inline]
 __schedule+0xe58/0x5ad0 kernel/sched/core.c:6756
 __schedule_loop kernel/sched/core.c:6833 [inline]
 schedule+0xe7/0x350 kernel/sched/core.c:6848
 schedule_timeout+0x124/0x280 kernel/time/sleep_timeout.c:99
 rcu_gp_fqs_loop+0x1eb/0xb00 kernel/rcu/tree.c:2045
 rcu_gp_kthread+0x271/0x380 kernel/rcu/tree.c:2247
 kthread+0x2c1/0x3a0 kernel/kthread.c:389
 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>