rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	0-....: (0 ticks this GP) idle=1bf4/1/0x4000000000000002 softirq=30951/30951 fqs=2100
rcu: 	Tasks blocked on level-0 rcu_node (CPUs 0-1): P9305
	(detected by 1, t=10506 jiffies, g=36789, q=604 ncpus=2)
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 9305 Comm: syz.0.1434 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
RIP: 0010:check_kcov_mode kernel/kcov.c:182 [inline]
RIP: 0010:write_comp_data kernel/kcov.c:245 [inline]
RIP: 0010:__sanitizer_cov_trace_const_cmp4+0x2a/0x80 kernel/kcov.c:313
Code: 48 8b 04 24 65 48 8b 15 44 9b 81 7e 65 8b 0d 45 9b 81 7e 81 e1 00 01 ff 00 74 11 81 f9 00 01 00 00 75 5b 83 ba 1c 16 00 00 00 <74> 52 8b 8a f8 15 00 00 83 f9 03 75 47 48 8b 8a 00 16 00 00 44 8b
RSP: 0018:ffffc90000007640 EFLAGS: 00000046
RAX: ffffffff818d09af RBX: 0000000000000101 RCX: 0000000000000100
RDX: ffff88802a879dc0 RSI: 0000000000000101 RDI: 0000000000000000
RBP: 0000000000000000 R08: dffffc0000000000 R09: fffff52000000eb5
R10: fffff52000000eb5 R11: 1ffff92000000eb4 R12: 0000000000000000
R13: dffffc0000000001 R14: 0000000000000000 R15: 0000000000000000
FS:  00007f10b79dc6c0(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f10b79bbd58 CR3: 0000000041b68000 CR4: 00000000003506f0
DR0: 0000200000000300 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 should_resched arch/x86/include/asm/preempt.h:103 [inline]
 irq_work_queue_on+0x18f/0x260 kernel/irq_work.c:168
 rcu_read_unlock_special+0x3c7/0x500 kernel/rcu/tree_plugin.h:678
 __rcu_read_unlock+0x78/0xd0 kernel/rcu/tree_plugin.h:426
 rcu_read_unlock include/linux/rcupdate.h:823 [inline]
 __perf_event_output kernel/events/core.c:7741 [inline]
 perf_event_output_forward+0x237/0x2a0 kernel/events/core.c:7750
 __perf_event_overflow+0x448/0x610 kernel/events/core.c:9496
 perf_tp_event+0x335/0xb60 kernel/events/core.c:10029
 perf_trace_run_bpf_submit+0xf3/0x1c0 kernel/events/core.c:10002
 perf_trace_preemptirq_template+0x287/0x330 include/trace/events/preemptirq.h:14
 trace_irq_enable_rcuidle+0xd3/0x140 include/trace/events/preemptirq.h:40
 trace_hardirqs_on+0x24/0x40 kernel/trace/trace_preemptirq.c:44
 asm_sysvec_irq_work+0x16/0x20 arch/x86/include/asm/idtentry.h:728
RIP: 0010:variable_ffs arch/x86/include/asm/bitops.h:319 [inline]
RIP: 0010:handle_softirqs+0x1c8/0x920 kernel/softirq.c:584
Code: 89 7c 24 44 0f b7 db 48 c7 c7 80 fb 8a 8a e8 ef e2 c8 08 65 66 c7 05 35 2a b5 7e 00 00 e8 a0 b6 38 00 fb 49 c7 c6 c0 a0 80 8c <89> 5c 24 4c b8 ff ff ff ff 0f bc 44 24 4c 41 89 c5 41 ff c5 0f 84
RSP: 0018:ffffc90000007e00 EFLAGS: 00000286
RAX: b36737a6e4b95f00 RBX: 0000000000000200 RCX: b36737a6e4b95f00
RDX: dffffc0000000000 RSI: ffffffff8a8c0500 RDI: ffffffff8adefca0
RBP: ffffc90000007f30 R08: dffffc0000000000 R09: ffffed10171c6afa
R10: ffffed10171c6afa R11: 1ffff110171c6af9 R12: dffffc0000000000
R13: 0000000000000000 R14: ffffffff8c80a0c0 R15: 000000000000000a
 __do_softirq kernel/softirq.c:630 [inline]
 invoke_softirq kernel/softirq.c:470 [inline]
 __irq_exit_rcu+0x12f/0x220 kernel/softirq.c:679
 irq_exit_rcu+0x5/0x20 kernel/softirq.c:691
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1118 [inline]
 sysvec_apic_timer_interrupt+0xa0/0xc0 arch/x86/kernel/apic/apic.c:1118
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:691
RIP: 0010:__rcu_read_unlock+0x73/0xd0 kernel/rcu/tree_plugin.h:426
Code: 84 c0 75 5f 41 83 3e 00 75 20 43 0f b6 04 3c 84 c0 75 3a 8b 03 3d 00 00 00 40 73 0a 5b 41 5c 41 5d 41 5e 41 5f c3 0f 0b eb f2 <e8> 58 00 00 00 eb d9 89 d9 80 e1 07 80 c1 03 38 c1 7c ac 49 89 fe
RSP: 0018:ffffc9000d3cf8d0 EFLAGS: 00000202
RAX: 0000000000000000 RBX: ffff88802a87a1fc RCX: 0000000000080000
RDX: ffffc900058a9000 RSI: 000000000002735d RDI: ffff88802a879dc0
RBP: ffffc9000d3cf9d0 R08: dffffc0000000000 R09: ffffed10171c6afa
R10: ffffed10171c6afa R11: 1ffff110171c6af9 R12: 1ffff1100550f43f
R13: 0000000000000000 R14: ffff88802a87a200 R15: dffffc0000000000
 rcu_read_unlock include/linux/rcupdate.h:823 [inline]
 mod_memcg_page_state+0x48c/0x910 include/linux/memcontrol.h:985
 __vmalloc_area_node mm/vmalloc.c:3079 [inline]
 __vmalloc_node_range+0xcb9/0x1390 mm/vmalloc.c:3243
 __bpf_map_area_alloc kernel/bpf/syscall.c:334 [inline]
 bpf_map_area_alloc+0xd4/0xe0 kernel/bpf/syscall.c:341
 prealloc_init+0x136/0x860 kernel/bpf/hashtab.c:316
 htab_map_alloc+0xc7c/0x1110 kernel/bpf/hashtab.c:568
 find_and_alloc_map kernel/bpf/syscall.c:133 [inline]
 map_create+0x534/0x1000 kernel/bpf/syscall.c:1149
 __sys_bpf+0x2f3/0x6d0 kernel/bpf/syscall.c:5009
 __do_sys_bpf kernel/bpf/syscall.c:5131 [inline]
 __se_sys_bpf kernel/bpf/syscall.c:5129 [inline]
 __x64_sys_bpf+0x78/0x90 kernel/bpf/syscall.c:5129
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:81
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f10b6b8eba9
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:00007f10b79dc038 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 00007f10b6dd5fa0 RCX: 00007f10b6b8eba9
RDX: 0000000000000050 RSI: 00002000000002c0 RDI: 0000000000000000
RBP: 00007f10b6c11e19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f10b6dd6038 R14: 00007f10b6dd5fa0 R15: 00007ffda045c388
 </TASK>
task:syz.0.1434      state:R  running task     stack:25536 pid:9305  ppid:4271   flags:0x0000400c
Call Trace:
 <TASK>
 </TASK>