rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	0-...!: (3 ticks this GP) idle=0d24/1/0x4000000000000000 softirq=57923/57923 fqs=0
rcu: 	(detected by 1, t=10502 jiffies, g=57505, q=489 ncpus=2)
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 11209 Comm: cmp Not tainted 6.14.0-rc3-syzkaller-00012-g2408a807bfc3 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
RIP: 0010:hlock_class kernel/locking/lockdep.c:230 [inline]
RIP: 0010:lookup_chain_cache_add kernel/locking/lockdep.c:3818 [inline]
RIP: 0010:validate_chain+0x126/0x5920 kernel/locking/lockdep.c:3874
Code: 04 00 00 81 e3 ff 1f 00 00 48 89 d8 48 c1 e8 06 48 8d 3c c5 40 68 54 94 be 08 00 00 00 e8 f2 94 8b 00 48 0f a3 1d ba ff b6 12 <72> 66 48 c7 c0 80 d9 64 9a 48 c1 e8 03 42 0f b6 04 20 84 c0 0f 85
RSP: 0018:ffffc90000007740 EFLAGS: 00000057
RAX: 0000000000000001 RBX: 000000000000006c RCX: ffffffff819d687e
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff94546848
RBP: ffffc90000007a40 R08: ffffffff9454684f R09: 1ffffffff28a8d09
R10: dffffc0000000000 R11: fffffbfff28a8d0a R12: dffffc0000000000
R13: ffff88803072c738 R14: d57e1d102ea6ccdd R15: 0000000000000001
FS:  0000000000000000(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007efcc2234290 CR3: 000000005bc48000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <IRQ>
 __lock_acquire+0x1397/0x2100 kernel/locking/lockdep.c:5228
 lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5851
 __raw_spin_lock_irq include/linux/spinlock_api_smp.h:119 [inline]
 _raw_spin_lock_irq+0xd3/0x120 kernel/locking/spinlock.c:170
 __run_hrtimer kernel/time/hrtimer.c:1805 [inline]
 __hrtimer_run_queues+0x670/0xd30 kernel/time/hrtimer.c:1865
 hrtimer_interrupt+0x403/0xa40 kernel/time/hrtimer.c:1927
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1038 [inline]
 __sysvec_apic_timer_interrupt+0x110/0x420 arch/x86/kernel/apic/apic.c:1055
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1049 [inline]
 sysvec_apic_timer_interrupt+0xa1/0xc0 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:194 [inline]
RIP: 0010:__sanitizer_cov_trace_pc+0x37/0x70 kernel/kcov.c:217
Code: 80 d6 03 00 65 8b 15 e0 1b 42 7e 81 e2 00 01 ff 00 74 11 81 fa 00 01 00 00 75 35 83 b9 2c 16 00 00 00 74 2c 8b 91 08 16 00 00 <83> fa 02 75 21 48 8b 91 10 16 00 00 48 8b 32 48 8d 7e 01 8b 89 0c
RSP: 0018:ffffc90003437238 EFLAGS: 00000246
RAX: ffffffff8218cda5 RBX: 0000000000000011 RCX: ffff88803072bc00
RDX: 0000000000000000 RSI: 00007efcc210a000 RDI: 00007efcc210a000
RBP: ffffc90003437390 R08: ffffffff8218cb7e R09: ffffffff8bffa8e7
R10: 0000000000000004 R11: ffff88803072bc00 R12: ffffc900034372c0
R13: ffff88807f48bd28 R14: dffffc0000000000 R15: 00007efcc210a000
 validate_mm+0x435/0x590
 __split_vma+0xa60/0xbf0 mm/vma.c:513
 vms_gather_munmap_vmas+0x4c1/0x1600 mm/vma.c:1289
 __mmap_prepare mm/vma.c:2242 [inline]
 __mmap_region mm/vma.c:2444 [inline]
 mmap_region+0xa50/0x2fa0 mm/vma.c:2535
 do_mmap+0xecc/0x13a0 mm/mmap.c:561
 vm_mmap_pgoff+0x214/0x430 mm/util.c:575
 ksys_mmap_pgoff+0x4eb/0x720 mm/mmap.c:607
 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: 0033:0x7efcc2256b74
Code: 63 08 44 89 e8 5b 41 5c 41 5d c3 41 89 ca 41 f7 c1 ff 0f 00 00 74 0c c7 05 f5 46 01 00 16 00 00 00 eb 17 b8 09 00 00 00 0f 05 <48> 3d 00 f0 ff ff 76 0c f7 d8 89 05 dc 46 01 00 48 83 c8 ff c3 0f
RSP: 002b:00007ffe0f2a1de8 EFLAGS: 00000246 ORIG_RAX: 0000000000000009
RAX: ffffffffffffffda RBX: 00007ffe0f2a1e60 RCX: 00007efcc2256b74
RDX: 0000000000000001 RSI: 0000000000007000 RDI: 00007efcc1fa3000
RBP: 00007ffe0f2a21c0 R08: 0000000000000003 R09: 000000000001b000
R10: 0000000000000812 R11: 0000000000000246 R12: 00007efcc2233fc0
R13: 00007ffe0f2a2248 R14: 000000000001a43e R15: 0000000000000000
 </TASK>
rcu: rcu_preempt kthread timer wakeup didn't happen for 10501 jiffies! g57505 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402
rcu: 	Possible timer handling issue on cpu=0 timer-softirq=24036
rcu: rcu_preempt kthread starved for 10502 jiffies! g57505 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:25624 pid:17    tgid:17    ppid:2      task_flags:0x208040 flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5378 [inline]
 __schedule+0x190e/0x4c90 kernel/sched/core.c:6765
 __schedule_loop kernel/sched/core.c:6842 [inline]
 schedule+0x14b/0x320 kernel/sched/core.c:6857
 schedule_timeout+0x15a/0x290 kernel/time/sleep_timeout.c:99
 rcu_gp_fqs_loop+0x2df/0x1330 kernel/rcu/tree.c:2024
 rcu_gp_kthread+0xa7/0x3b0 kernel/rcu/tree.c:2226
 kthread+0x7a9/0x920 kernel/kthread.c:464
 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:148
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>