rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	1-....: (10497 ticks this GP) idle=2d54/1/0x4000000000000000 softirq=36871/104351 fqs=4404
rcu: 	         hardirqs   softirqs   csw/system
rcu: 	 number:   992928      41159            0
rcu: 	cputime:    46361       6030          228   ==> 52490(ms)
rcu: 	(t=10500 jiffies g=26709 q=4506 ncpus=2)
CPU: 1 UID: 0 PID: 9422 Comm: syz.4.1098 Not tainted 6.16.0-rc6-syzkaller-g95993dc3039e #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
RIP: 0010:check_kcov_mode kernel/kcov.c:183 [inline]
RIP: 0010:__sanitizer_cov_trace_pc+0x20/0x70 kernel/kcov.c:217
Code: 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 48 8b 04 24 65 48 8b 0c 25 08 10 a0 92 65 8b 15 28 e7 df 10 81 e2 00 01 ff 00 74 11 <81> fa 00 01 00 00 75 35 83 b9 3c 16 00 00 00 74 2c 8b 91 18 16 00
RSP: 0018:ffffc90000a086f8 EFLAGS: 00000206
RAX: ffffffff81c876d7 RBX: ffffc90000a087e0 RCX: ffff888025361e00
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90000a087b0 R08: ffffc90000a0880f R09: 0000000000000000
R10: ffffc90000a087e0 R11: fffff52000141102 R12: dffffc0000000000
R13: ffff88801b2cfdc8 R14: 0000000000000000 R15: ffff88801b2cfd80
FS:  00007fba2c9726c0(0000) GS:ffff888125d1f000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fba2bdb5f44 CR3: 00000000320ca000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 trace_event_buffer_reserve+0xd7/0x340 kernel/trace/trace_events.c:658
 do_trace_event_raw_event_bpf_trace_printk kernel/trace/bpf_trace.h:11 [inline]
 trace_event_raw_event_bpf_trace_printk+0x100/0x260 kernel/trace/bpf_trace.h:11
 __do_trace_bpf_trace_printk kernel/trace/bpf_trace.h:11 [inline]
 trace_bpf_trace_printk+0x170/0x1d0 kernel/trace/bpf_trace.h:11
 ____bpf_trace_printk kernel/trace/bpf_trace.c:380 [inline]
 bpf_trace_printk+0x11e/0x190 kernel/trace/bpf_trace.c:363
 bpf_prog_0605f9f479290f07+0x38/0x40
 bpf_dispatcher_nop_func include/linux/bpf.h:1322 [inline]
 __bpf_prog_run include/linux/filter.h:718 [inline]
 bpf_prog_run include/linux/filter.h:725 [inline]
 __bpf_trace_run kernel/trace/bpf_trace.c:2257 [inline]
 bpf_trace_run1+0x27c/0x4b0 kernel/trace/bpf_trace.c:2297
 __bpf_trace_rcu_utilization+0xa1/0xf0 include/trace/events/rcu.h:27
 __do_trace_rcu_utilization include/trace/events/rcu.h:27 [inline]
 trace_rcu_utilization+0x1ad/0x1d0 include/trace/events/rcu.h:27
 rcu_core+0x1336/0x1710 kernel/rcu/tree.c:2840
 handle_softirqs+0x286/0x870 kernel/softirq.c:579
 __do_softirq kernel/softirq.c:613 [inline]
 invoke_softirq kernel/softirq.c:453 [inline]
 __irq_exit_rcu+0xca/0x1f0 kernel/softirq.c:680
 irq_exit_rcu+0x9/0x30 kernel/softirq.c:696
 instr_sysvec_irq_work arch/x86/kernel/irq_work.c:17 [inline]
 sysvec_irq_work+0xa3/0xc0 arch/x86/kernel/irq_work.c:17
 </IRQ>
 <TASK>
 asm_sysvec_irq_work+0x1a/0x20 arch/x86/include/asm/idtentry.h:738
RIP: 0010:__schedule+0x1727/0x4d00 kernel/sched/core.c:6793
Code: 31 ff 4d 39 e6 40 0f 95 c7 48 8b b4 24 c0 00 00 00 e8 cd 8b 22 f6 48 c7 84 24 00 01 00 00 0e 36 e0 45 48 8b 84 24 f8 00 00 00 <4a> c7 04 28 00 00 00 00 4a c7 44 28 09 00 00 00 00 42 c7 44 28 11
RSP: 0018:ffffc90003456da0 EFLAGS: 00000202
RAX: 1ffff9200068add4 RBX: ffff888025362580 RCX: 851b9d4dd3a33700
RDX: 0000000000000000 RSI: ffffffff8be29f20 RDI: ffffffff8be29ee0
RBP: ffffc90003456fb0 R08: ffffffff8fa1e8f7 R09: 1ffffffff1f43d1e
R10: dffffc0000000000 R11: fffffbfff1f43d1f R12: ffff888025361e00
R13: dffffc0000000000 R14: ffff888025361e00 R15: ffff8880b8739fc0
 preempt_schedule_common+0x83/0xd0 kernel/sched/core.c:6966
 preempt_schedule+0xae/0xc0 kernel/sched/core.c:6990
 preempt_schedule_thunk+0x16/0x30 arch/x86/entry/thunk.S:12
 __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline]
 _raw_spin_unlock_irqrestore+0xfd/0x110 kernel/locking/spinlock.c:194
 rcu_preempt_deferred_qs_irqrestore+0x851/0xc40 kernel/rcu/tree_plugin.h:-1
 rcu_read_unlock_special+0x3fe/0x4c0 kernel/rcu/tree_plugin.h:693
 __rcu_read_unlock+0x84/0xe0 kernel/rcu/tree_plugin.h:438
 rcu_read_unlock include/linux/rcupdate.h:873 [inline]
 class_rcu_destructor include/linux/rcupdate.h:1155 [inline]
 unwind_next_frame+0x19ae/0x2390 arch/x86/kernel/unwind_orc.c:680
 arch_stack_walk+0x11c/0x150 arch/x86/kernel/stacktrace.c:25
 stack_trace_save+0x9c/0xe0 kernel/stacktrace.c:122
 save_stack+0xf5/0x1f0 mm/page_owner.c:156
 __reset_page_owner+0x71/0x1f0 mm/page_owner.c:308
 reset_page_owner include/linux/page_owner.h:25 [inline]
 free_pages_prepare mm/page_alloc.c:1248 [inline]
 __free_frozen_pages+0xc71/0xe70 mm/page_alloc.c:2706
 tlb_batch_list_free mm/mmu_gather.c:159 [inline]
 tlb_finish_mmu+0x112/0x1d0 mm/mmu_gather.c:500
 exit_mmap+0x44c/0xb50 mm/mmap.c:1297
 __mmput+0x118/0x420 kernel/fork.c:1121
 copy_process+0x2894/0x3b80 kernel/fork.c:2448
 kernel_clone+0x21e/0x870 kernel/fork.c:2599
 __do_sys_clone kernel/fork.c:2742 [inline]
 __se_sys_clone kernel/fork.c:2726 [inline]
 __x64_sys_clone+0x18b/0x1e0 kernel/fork.c:2726
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fba2bb8e9a9
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:00007fba2c971fe8 EFLAGS: 00000206 ORIG_RAX: 0000000000000038
RAX: ffffffffffffffda RBX: 00007fba2bdb5fa0 RCX: 00007fba2bb8e9a9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000025200000
RBP: 00007fba2bc10d69 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000000
R13: 0000000000000000 R14: 00007fba2bdb5fa0 R15: 00007fffb4f8f0a8
 </TASK>