rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	1-...!: (2 ticks this GP) idle=6cbc/1/0x4000000000000000 softirq=20479/20479 fqs=0
rcu: 	(detected by 0, t=10503 jiffies, g=23253, q=590 ncpus=2)
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 6717 Comm: sed Not tainted 6.10.0-rc1-syzkaller-00296-g89be4025b0db #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024
RIP: 0010:debug_object_deactivate+0x5/0x390 lib/debugobjects.c:752
Code: 31 00 e9 02 ff ff ff 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 81 ec c0 00 00
RSP: 0018:ffffc90000a18d30 EFLAGS: 00000046
RAX: ffffffff8183a32c RBX: ffff888063aff340 RCX: ffff888024851e00
RDX: 0000000000010001 RSI: ffffffff8bccbae0 RDI: ffff888063aff340
RBP: ffffc90000a18ea8 R08: ffffffff81837044 R09: 0000000000000000
R10: ffff888063aff340 R11: ffffed100c75fe6b R12: 1ffff110172a593b
R13: dffffc0000000000 R14: ffff888063aff340 R15: ffff8880b952c980
FS:  00007ff1e91c5380(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ff1e93b98e5 CR3: 000000002a5cc000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <IRQ>
 debug_hrtimer_deactivate kernel/time/hrtimer.c:428 [inline]
 debug_deactivate+0x1b/0x220 kernel/time/hrtimer.c:484
 __run_hrtimer kernel/time/hrtimer.c:1655 [inline]
 __hrtimer_run_queues+0x305/0xd50 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:lock_acquire+0x264/0x550 kernel/locking/lockdep.c:5758
Code: 2b 00 74 08 4c 89 f7 e8 ba 7f 89 00 f6 44 24 61 02 0f 85 85 01 00 00 41 f7 c7 00 02 00 00 74 01 fb 48 c7 44 24 40 0e 36 e0 45 <4b> c7 44 25 00 00 00 00 00 43 c7 44 25 09 00 00 00 00 43 c7 44 25
RSP: 0018:ffffc900047b7860 EFLAGS: 00000206
RAX: 0000000000000001 RBX: 1ffff920008f6f18 RCX: 0000000000000001
RDX: dffffc0000000000 RSI: ffffffff8bcacc00 RDI: ffffffff8c1ff240
RBP: ffffc900047b79b8 R08: ffffffff92fa861f R09: 1ffffffff25f50c3
R10: dffffc0000000000 R11: fffffbfff25f50c4 R12: 1ffff920008f6f14
R13: dffffc0000000000 R14: ffffc900047b78c0 R15: 0000000000000246
 down_write+0x3a/0x50 kernel/locking/rwsem.c:1579
 vma_start_write include/linux/mm.h:731 [inline]
 __split_vma+0x78e/0xc30 mm/mmap.c:2425
 split_vma mm/mmap.c:2466 [inline]
 vma_modify+0x268/0x350 mm/mmap.c:2507
 vma_modify_flags include/linux/mm.h:3347 [inline]
 mprotect_fixup+0x3ea/0xa90 mm/mprotect.c:637
 do_mprotect_pkey+0x908/0xe00 mm/mprotect.c:820
 __do_sys_mprotect mm/mprotect.c:841 [inline]
 __se_sys_mprotect mm/mprotect.c:838 [inline]
 __x64_sys_mprotect+0x80/0x90 mm/mprotect.c:838
 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: 0033:0x7ff1e94e9bb7
Code: 00 00 00 b8 0b 00 00 00 0f 05 48 3d 01 f0 ff ff 73 01 c3 48 8d 0d b9 46 01 00 f7 d8 89 01 48 83 c8 ff c3 b8 0a 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8d 0d 99 46 01 00 f7 d8 89 01 48 83
RSP: 002b:00007ffe1dd8b828 EFLAGS: 00000206 ORIG_RAX: 000000000000000a
RAX: ffffffffffffffda RBX: 00007ff1e94fdab0 RCX: 00007ff1e94e9bb7
RDX: 0000000000000001 RSI: 0000000000002000 RDI: 00007ff1e94fb000
RBP: 00007ffe1dd8b940 R08: 00007ffe1dd80000 R09: 00007ff1e94c65c0
R10: 00007ff1e94ce858 R11: 0000000000000206 R12: 00007ff1e94fdab0
R13: 00007ff1e94f1eda R14: 00007ff1e94fc9f0 R15: 00007ff1e94fcf40
 </TASK>
rcu: rcu_preempt kthread timer wakeup didn't happen for 10502 jiffies! g23253 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402
rcu: 	Possible timer handling issue on cpu=1 timer-softirq=10483
rcu: rcu_preempt kthread starved for 10503 jiffies! g23253 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:25168 pid:17    tgid:17    ppid:2      flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5408 [inline]
 __schedule+0x17e8/0x4a20 kernel/sched/core.c:6745
 __schedule_loop kernel/sched/core.c:6822 [inline]
 schedule+0x14b/0x320 kernel/sched/core.c:6837
 schedule_timeout+0x1be/0x310 kernel/time/timer.c:2581
 rcu_gp_fqs_loop+0x2df/0x1330 kernel/rcu/tree.c:2000
 rcu_gp_kthread+0xa7/0x3b0 kernel/rcu/tree.c:2202
 kthread+0x2f0/0x390 kernel/kthread.c:389
 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>