rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	0-...!: (0 ticks this GP) idle=1d7/1/0x4000000000000000 softirq=27482/27482 fqs=0 
	(detected by 1, t=10502 jiffies, g=29181, q=5697)
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 13267 Comm: syz.4.3703 Not tainted 5.15.165-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
RIP: 0010:check_kcov_mode kernel/kcov.c:183 [inline]
RIP: 0010:write_comp_data kernel/kcov.c:227 [inline]
RIP: 0010:__sanitizer_cov_trace_const_cmp8+0x30/0x80 kernel/kcov.c:300
Code: 8b 0d 34 0a 82 7e 65 8b 05 35 0a 82 7e 25 00 01 ff 00 74 10 3d 00 01 00 00 75 57 83 b9 34 16 00 00 00 74 4e 8b 81 10 16 00 00 <83> f8 03 75 43 48 8b 91 18 16 00 00 44 8b 89 14 16 00 00 49 c1 e1
RSP: 0000:ffffc90004ecf6a8 EFLAGS: 00000046
RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffff88805da68000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffff8880b9000000 R08: ffffffff81a1fcfa R09: ffffed101720765a
R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000000
R13: dffffc0000000000 R14: ffffc90004ecf700 R15: dffffc0000000000
FS:  0000555556ccd500(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2ff5ffff CR3: 000000005e4c1000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <TASK>
 interrupt_context_level include/linux/preempt.h:96 [inline]
 get_recursion_context kernel/events/internal.h:213 [inline]
 perf_swevent_get_recursion_context+0xaa/0x150 kernel/events/core.c:9709
 perf_trace_buf_alloc+0x57/0x2e0 kernel/trace/trace_event_perf.c:408
 perf_trace_preemptirq_template+0x1cf/0x430 include/trace/events/preemptirq.h:14
 trace_irq_enable_rcuidle+0x10e/0x190 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:664
RIP: 0010:rcu_read_unlock_special+0x84/0x520 kernel/rcu/tree_plugin.h:671
Code: f1 f1 f1 00 f2 f2 f2 49 89 04 17 66 41 c7 44 17 09 f3 f3 41 c6 44 17 0b f3 65 44 8b 25 fd a2 96 7e 41 f7 c4 00 00 f0 00 74 45 <48> c7 44 24 20 0e 36 e0 45 4a c7 04 3a 00 00 00 00 66 42 c7 44 3a
RSP: 0000:ffffc90004ecf900 EFLAGS: 00000206
RAX: 83c62b16b5d2d900 RBX: 1ffff920009d9f28 RCX: ffffffff81631a88
RDX: dffffc0000000000 RSI: ffffffff8a8b2a20 RDI: ffffffff8ad8f7c0
RBP: ffffc90004ecf9d8 R08: dffffc0000000000 R09: fffffbfff20e1e19
R10: 0000000000000000 R11: dffffc0000000001 R12: ffffffff8c923c00
R13: ffff88805da68458 R14: ffffc90004ecf940 R15: 1ffff920009d9f24
 __rcu_read_unlock+0x92/0x100 kernel/rcu/tree_plugin.h:422
 rcu_read_unlock include/linux/rcupdate.h:771 [inline]
 __unlock_page_memcg+0xfd/0x110 mm/memcontrol.c:2090
 do_set_pte+0x45b/0x660 mm/memory.c:4039
 finish_fault+0x500/0x9e0 mm/memory.c:4113
 do_shared_fault mm/memory.c:4306 [inline]
 do_fault mm/memory.c:4366 [inline]
 handle_pte_fault mm/memory.c:4621 [inline]
 __handle_mm_fault mm/memory.c:4756 [inline]
 handle_mm_fault+0x2caf/0x5950 mm/memory.c:4854
 do_user_addr_fault arch/x86/mm/fault.c:1357 [inline]
 handle_page_fault arch/x86/mm/fault.c:1445 [inline]
 exc_page_fault+0x271/0x700 arch/x86/mm/fault.c:1501
 asm_exc_page_fault+0x22/0x30 arch/x86/include/asm/idtentry.h:568
RIP: 0033:0x7fe2c4402d10
Code: 00 48 89 df e8 f1 82 ff ff 48 8b 05 62 9a df 00 83 05 4b 9a df 00 01 be 08 00 00 00 48 89 df 48 8d 50 ff 48 89 15 48 9a df 00 <44> 88 60 ff 44 8b 25 2d 9a df 00 e8 c0 82 ff ff 48 8b 05 39 9a df
RSP: 002b:00007fff7fa1ec20 EFLAGS: 00010202
RAX: 0000001b2ff60000 RBX: 00007fe2c51fc720 RCX: 0000001b2ff20210
RDX: 0000001b2ff5ffff RSI: 0000000000000008 RDI: 00007fe2c51fc720
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 00007fe2c51fc700 R11: 0000000000000001 R12: 0000000000002c03
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
 </TASK>
rcu: rcu_preempt kthread timer wakeup didn't happen for 10501 jiffies! g29181 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402
rcu: 	Possible timer handling issue on cpu=0 timer-softirq=10040
rcu: rcu_preempt kthread starved for 10502 jiffies! g29181 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:27064 pid:   15 ppid:     2 flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5027 [inline]
 __schedule+0x12c4/0x45b0 kernel/sched/core.c:6373
 schedule+0x11b/0x1f0 kernel/sched/core.c:6456
 schedule_timeout+0x1b9/0x300 kernel/time/timer.c:1914
 rcu_gp_fqs_loop+0x2bf/0x1080 kernel/rcu/tree.c:1972
 rcu_gp_kthread+0xa4/0x360 kernel/rcu/tree.c:2145
 kthread+0x3f6/0x4f0 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: 13267 Comm: syz.4.3703 Not tainted 5.15.165-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
RIP: 0010:arch_atomic_read arch/x86/include/asm/atomic.h:29 [inline]
RIP: 0010:rcu_dynticks_curr_cpu_in_eqs kernel/rcu/tree.c:331 [inline]
RIP: 0010:rcu_is_watching+0x56/0xa0 kernel/rcu/tree.c:1123
Code: f0 48 c1 e8 03 42 80 3c 38 00 74 08 4c 89 f7 e8 60 11 5f 00 48 c7 c3 c8 b2 03 00 49 03 1e 48 89 d8 48 c1 e8 03 42 0f b6 04 38 <84> c0 75 1a 8b 03 65 ff 0d 95 56 97 7e 74 08 24 01 5b 41 5e 41 5f
RSP: 0000:ffffc90004ecf160 EFLAGS: 00000806
RAX: 0000000000000000 RBX: ffff8880b903b2c8 RCX: ffff88805da68000
RDX: ffff88805da68000 RSI: ffffffff8ad8f7a0 RDI: ffffffff8ad8f760
RBP: ffffc90004ecf2b0 R08: ffffffff81a57261 R09: fffffbfff20e1e19
R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000
R13: 1ffff920009d9e40 R14: ffffffff8c3b3800 R15: dffffc0000000000
FS:  0000555556ccd500(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2ff5ffff CR3: 000000005e4c1000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <TASK>
 rcu_read_lock include/linux/rcupdate.h:740 [inline]
 __perf_output_begin kernel/events/ring_buffer.c:163 [inline]
 perf_output_begin_forward+0xca/0xac0 kernel/events/ring_buffer.c:271
 __perf_event_output kernel/events/core.c:7769 [inline]
 perf_event_output_forward+0x1c8/0x310 kernel/events/core.c:7787
 __perf_event_overflow+0x35d/0x530 kernel/events/core.c:9480
 perf_tp_event+0x363/0xc40 kernel/events/core.c:10012
 perf_trace_run_bpf_submit+0xf7/0x1d0 kernel/events/core.c:9986
 perf_trace_preemptirq_template+0x31d/0x430 include/trace/events/preemptirq.h:14
 trace_irq_enable_rcuidle+0x10e/0x190 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:664
RIP: 0010:rcu_read_unlock_special+0x84/0x520 kernel/rcu/tree_plugin.h:671
Code: f1 f1 f1 00 f2 f2 f2 49 89 04 17 66 41 c7 44 17 09 f3 f3 41 c6 44 17 0b f3 65 44 8b 25 fd a2 96 7e 41 f7 c4 00 00 f0 00 74 45 <48> c7 44 24 20 0e 36 e0 45 4a c7 04 3a 00 00 00 00 66 42 c7 44 3a
RSP: 0000:ffffc90004ecf900 EFLAGS: 00000206
RAX: 83c62b16b5d2d900 RBX: 1ffff920009d9f28 RCX: ffffffff81631a88
RDX: dffffc0000000000 RSI: ffffffff8a8b2a20 RDI: ffffffff8ad8f7c0
RBP: ffffc90004ecf9d8 R08: dffffc0000000000 R09: fffffbfff20e1e19
R10: 0000000000000000 R11: dffffc0000000001 R12: ffffffff8c923c00
R13: ffff88805da68458 R14: ffffc90004ecf940 R15: 1ffff920009d9f24
 __rcu_read_unlock+0x92/0x100 kernel/rcu/tree_plugin.h:422
 rcu_read_unlock include/linux/rcupdate.h:771 [inline]
 __unlock_page_memcg+0xfd/0x110 mm/memcontrol.c:2090
 do_set_pte+0x45b/0x660 mm/memory.c:4039
 finish_fault+0x500/0x9e0 mm/memory.c:4113
 do_shared_fault mm/memory.c:4306 [inline]
 do_fault mm/memory.c:4366 [inline]
 handle_pte_fault mm/memory.c:4621 [inline]
 __handle_mm_fault mm/memory.c:4756 [inline]
 handle_mm_fault+0x2caf/0x5950 mm/memory.c:4854
 do_user_addr_fault arch/x86/mm/fault.c:1357 [inline]
 handle_page_fault arch/x86/mm/fault.c:1445 [inline]
 exc_page_fault+0x271/0x700 arch/x86/mm/fault.c:1501
 asm_exc_page_fault+0x22/0x30 arch/x86/include/asm/idtentry.h:568
RIP: 0033:0x7fe2c4402d10
Code: 00 48 89 df e8 f1 82 ff ff 48 8b 05 62 9a df 00 83 05 4b 9a df 00 01 be 08 00 00 00 48 89 df 48 8d 50 ff 48 89 15 48 9a df 00 <44> 88 60 ff 44 8b 25 2d 9a df 00 e8 c0 82 ff ff 48 8b 05 39 9a df
RSP: 002b:00007fff7fa1ec20 EFLAGS: 00010202
RAX: 0000001b2ff60000 RBX: 00007fe2c51fc720 RCX: 0000001b2ff20210
RDX: 0000001b2ff5ffff RSI: 0000000000000008 RDI: 00007fe2c51fc720
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 00007fe2c51fc700 R11: 0000000000000001 R12: 0000000000002c03
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
 </TASK>