rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
	(detected by 1, t=10502 jiffies, g=155977, q=7)
rcu: All QSes seen, last rcu_preempt kthread activity 10502 (4295078677-4295068175), jiffies_till_next_fqs=1, root ->qsmask 0x0
rcu: rcu_preempt kthread starved for 10502 jiffies! g155977 f0x2 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:27216 pid:   15 ppid:     2 flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5049 [inline]
 __schedule+0x11c3/0x4350 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/0x11f0 kernel/rcu/tree.c:1972
 rcu_gp_kthread+0x9a/0x370 kernel/rcu/tree.c:2145
 kthread+0x42e/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: 15333 Comm: syz.6.12935 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/06/2026
RIP: 0010:arch_static_branch arch/x86/include/asm/jump_label.h:27 [inline]
RIP: 0010:static_key_false include/linux/jump_label.h:212 [inline]
RIP: 0010:native_write_msr arch/x86/include/asm/msr.h:156 [inline]
RIP: 0010:wrmsr arch/x86/include/asm/msr.h:263 [inline]
RIP: 0010:native_apic_msr_write+0x35/0x50 arch/x86/include/asm/apic.h:208
Code: 74 2a 83 ff 30 74 25 eb 10 81 ff d0 00 00 00 74 1b 81 ff e0 00 00 00 74 13 c1 ef 04 81 c7 00 08 00 00 89 f9 89 f0 31 d2 0f 30 <66> 90 c3 89 f6 31 d2 e9 2f fb d5 02 66 2e 0f 1f 84 00 00 00 00 00
RSP: 0018:ffffc90002ffe888 EFLAGS: 00000046
RAX: 00000000000000f6 RBX: ffffffff8be64a20 RCX: 000000000000083f
RDX: 0000000000000000 RSI: 00000000000000f6 RDI: 000000000000083f
RBP: 0000000000000000 R08: ffff8880b8e33d77 R09: 1ffff110171c67ae
R10: dffffc0000000000 R11: ffffed10171c67af R12: 0000000000000000
R13: dffffc0000000001 R14: dffffc0000000000 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f9f9842f7a0 CR3: 0000000072c41000 CR4: 00000000003506f0
DR0: 0000200000000300 DR1: 00002000000005c0 DR2: 0000200000000540
DR3: 0000200000000540 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <TASK>
 arch_irq_work_raise+0x82/0xd0 arch/x86/kernel/irq_work.c:31
 irq_work_queue_on+0x11e/0x220 kernel/irq_work.c:109
 rcu_read_unlock_special+0x377/0x4a0 kernel/rcu/tree_plugin.h:667
 __rcu_read_unlock+0x78/0xd0 kernel/rcu/tree_plugin.h:422
 rcu_read_unlock include/linux/rcupdate.h:772 [inline]
 __perf_event_output kernel/events/core.c:7825 [inline]
 perf_event_output_forward+0x255/0x2e0 kernel/events/core.c:7834
 __perf_event_overflow+0x35f/0x550 kernel/events/core.c:9527
 perf_tp_event+0x324/0xbe0 kernel/events/core.c:10059
 perf_trace_run_bpf_submit+0xf3/0x1c0 kernel/events/core.c:10033
 perf_trace_preemptirq_template+0x2aa/0x360 include/trace/events/preemptirq.h:14
 trace_irq_enable_rcuidle+0x108/0x180 include/trace/events/preemptirq.h:40
 trace_hardirqs_on+0x57/0x80 kernel/trace/trace_preemptirq.c:44
 asm_sysvec_irq_work+0x16/0x20 arch/x86/include/asm/idtentry.h:713
RIP: 0010:rcu_read_unlock_special+0x7f/0x4a0 kernel/rcu/tree_plugin.h:674
Code: eb 03 48 b8 f1 f1 f1 f1 f8 f2 f2 f2 4a 89 04 2b 42 c7 44 2b 08 f8 f3 f3 f3 65 44 8b 35 d2 f6 9c 7e 41 f7 c6 00 00 f0 00 74 40 <48> c7 44 24 20 0e 36 e0 45 4a c7 04 2b 00 00 00 00 42 c7 44 2b 08
RSP: 0018:ffffc90002fff020 EFLAGS: 00000206
RAX: 694597dd6332e600 RBX: 1ffff920005ffe08 RCX: 694597dd6332e600
RDX: dffffc0000000000 RSI: ffffffff8a2b2b60 RDI: ffffffff8a7a5100
RBP: ffffc90002fff100 R08: ffffffff910471af R09: 1ffffffff2208e35
R10: dffffc0000000000 R11: fffffbfff2208e36 R12: ffffffff8d123400
R13: dffffc0000000000 R14: 0000000000000246 R15: 0000000000000001
 __rcu_read_unlock+0x78/0xd0 kernel/rcu/tree_plugin.h:422
 rcu_read_unlock include/linux/rcupdate.h:772 [inline]
 __mem_cgroup_uncharge_swap+0x20a/0x270 mm/memcontrol.c:7369
 mem_cgroup_uncharge_swap include/linux/swap.h:751 [inline]
 swap_entry_free mm/swapfile.c:1341 [inline]
 swapcache_free_entries+0x519/0x690 mm/swapfile.c:1453
 free_swap_slot+0x174/0x310 mm/swap_slots.c:290
 __swap_entry_free+0x200/0x240 mm/swapfile.c:1323
 free_swap_and_cache+0xc8/0x4a0 mm/swapfile.c:1783
 shmem_free_swap mm/shmem.c:799 [inline]
 shmem_undo_range+0x52c/0x19a0 mm/shmem.c:953
 shmem_truncate_range mm/shmem.c:1063 [inline]
 shmem_evict_inode+0x1e2/0x9a0 mm/shmem.c:1145
 evict+0x4b2/0x9d0 fs/inode.c:644
 __dentry_kill+0x412/0x630 fs/dcache.c:586
 dentry_kill+0xb8/0x290 fs/dcache.c:-1
 dput+0xd8/0x1a0 fs/dcache.c:893
 __fput+0x5a5/0x8c0 fs/file_table.c:319
 task_work_run+0x125/0x1a0 kernel/task_work.c:188
 exit_task_work include/linux/task_work.h:33 [inline]
 do_exit+0x635/0x2100 kernel/exit.c:890
 do_group_exit+0x12c/0x2f0 kernel/exit.c:1004
 get_signal+0x7eb/0x12e0 kernel/signal.c:2917
 arch_do_signal_or_restart+0xe6/0x12a0 arch/x86/kernel/signal.c:867
 handle_signal_work kernel/entry/common.c:157 [inline]
 exit_to_user_mode_loop+0x9e/0x130 kernel/entry/common.c:181
 exit_to_user_mode_prepare+0xee/0x180 kernel/entry/common.c:217
 irqentry_exit_to_user_mode+0x5/0x30 kernel/entry/common.c:323
 exc_general_protection+0x1e4/0x270 arch/x86/kernel/traps.c:562
 asm_exc_general_protection+0x22/0x30 arch/x86/include/asm/idtentry.h:600
RIP: 0033:0x7fb3ad50cfe1
Code: Unable to access opcode bytes at RIP 0x7fb3ad50cfb7.
RSP: 002b:00002000000003a0 EFLAGS: 00010217
RAX: 0000000000000000 RBX: 00007fb3ad78a180 RCX: 00007fb3ad50cfd9
RDX: 00002000000003c0 RSI: 00002000000003a0 RDI: 0000000000000400
RBP: 00007fb3ad59bfed R08: 0000200000000680 R09: 0000200000000680
R10: 0000200000000400 R11: 0000000000000206 R12: 0000000000000000
R13: 00007fb3ad78a218 R14: 00007fb3ad78a180 R15: 00007ffda5bf94a8
 </TASK>