rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 1-.... } 2636 jiffies s: 95169 root: 0x2/. rcu: blocking rcu_node structures (internal RCU debug): Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 21693 Comm: syz.6.4436 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 RIP: 0010:check_region_inline mm/kasan/generic.c:172 [inline] RIP: 0010:kasan_check_range+0x16/0x290 mm/kasan/generic.c:189 Code: 0f 0b b8 ea ff ff ff c3 00 00 cc cc 00 00 cc cc 00 00 cc cc b0 01 48 85 f6 0f 84 ac 01 00 00 55 41 57 41 56 41 54 53 49 89 f8 <49> 01 f0 0f 82 0e 02 00 00 49 89 f8 49 c1 e8 2f 41 81 f8 ff ff 01 RSP: 0018:ffffc900001e01f0 EFLAGS: 00000002 RAX: 0000000000000001 RBX: 0000000000000002 RCX: ffffffff81644b6a RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff90af9240 RBP: ffffc900001e0470 R08: ffffffff90af9240 R09: 1ffffffff215f248 R10: dffffc0000000000 R11: fffffbfff215f249 R12: ffff8880349c6490 R13: 0000000000000002 R14: 000000000000002c R15: ffff8880349c6490 FS: 00007fdb488d66c0(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b3460fff8 CR3: 000000007b3cf000 CR4: 00000000003506e0 DR0: 0000200000000300 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000008d24 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: instrument_atomic_read include/linux/instrumented.h:72 [inline] _test_bit include/asm-generic/bitops/instrumented-non-atomic.h:141 [inline] hlock_class kernel/locking/lockdep.c:228 [inline] check_wait_context kernel/locking/lockdep.c:4748 [inline] __lock_acquire+0x93a/0x7d10 kernel/locking/lockdep.c:4999 lock_acquire+0x1bb/0x4a0 kernel/locking/lockdep.c:5662 rcu_lock_acquire include/linux/rcupdate.h:350 [inline] rcu_read_lock_sched include/linux/rcupdate.h:883 [inline] pfn_valid include/linux/mmzone.h:1857 [inline] __virt_addr_valid+0x1a5/0x540 arch/x86/mm/physaddr.c:65 kasan_addr_to_slab+0x9/0xc0 mm/kasan/common.c:36 __kasan_record_aux_stack+0xf/0xc0 mm/kasan/generic.c:471 irq_work_queue_on+0x10f/0x260 kernel/irq_work.c:140 rcu_read_unlock_special+0x3c9/0x510 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] trace_call_bpf+0x5bb/0x6b0 kernel/trace/bpf_trace.c:137 perf_trace_run_bpf_submit+0x79/0x1c0 kernel/events/core.c:10027 perf_trace_preemptirq_template+0x268/0x320 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:rcu_read_unlock_special+0x7f/0x510 kernel/rcu/tree_plugin.h:685 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 33 95 7e 41 f7 c6 00 00 f0 00 74 40 <48> c7 44 24 40 0e 36 e0 45 4a c7 04 2b 00 00 00 00 42 c7 44 2b 08 RSP: 0018:ffffc900001e0ac0 EFLAGS: 00000206 RAX: 0d0a13e25b4dac00 RBX: 1ffff9200003c160 RCX: 0d0a13e25b4dac00 RDX: dffffc0000000000 RSI: ffffffff8a8c1120 RDI: ffffffff8adf1320 RBP: ffffc900001e0bb0 R08: ffffffff90af9257 R09: 1ffffffff215f24a R10: dffffc0000000000 R11: fffffbfff215f24b R12: 0000000000000246 R13: dffffc0000000000 R14: ffff8880b8f3b900 R15: 0000000000000002 __rcu_read_unlock+0x78/0xd0 kernel/rcu/tree_plugin.h:426 rcu_read_unlock include/linux/rcupdate.h:823 [inline] ieee80211_iterate_active_interfaces_atomic+0x156/0x170 net/mac80211/util.c:826 mac80211_hwsim_beacon+0xb7/0x1b0 drivers/net/wireless/mac80211_hwsim.c:2147 __run_hrtimer kernel/time/hrtimer.c:1747 [inline] __hrtimer_run_queues+0x54a/0xd50 kernel/time/hrtimer.c:1811 hrtimer_run_softirq+0x183/0x2a0 kernel/time/hrtimer.c:1828 handle_softirqs+0x2a1/0x930 kernel/softirq.c:596 __do_softirq kernel/softirq.c:630 [inline] invoke_softirq kernel/softirq.c:470 [inline] __irq_exit_rcu+0x13b/0x230 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 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:691 RIP: 0010:lock_release+0x5ab/0x920 kernel/locking/lockdep.c:5686 Code: 00 00 00 f7 84 24 80 00 00 00 00 02 00 00 43 c6 44 2f 04 f8 75 70 f7 44 24 50 00 02 00 00 74 01 fb 48 c7 44 24 60 0e 36 e0 45 <4b> c7 04 2f 00 00 00 00 43 c7 44 2f 08 00 00 00 00 65 48 8b 04 25 RSP: 0018:ffffc900054f6cc0 EFLAGS: 00000206 RAX: 0000000000000001 RBX: f3e939ec8e99e7f8 RCX: 0d0a13e25b4dac00 RDX: 0000000000000001 RSI: ffffffff8a8c22a0 RDI: ffffffff8adf1320 RBP: ffffc900054f6de0 R08: ffffffff8e1ff3ef R09: 1ffffffff1c3fe7d R10: dffffc0000000000 R11: fffffbfff1c3fe7e R12: ffff8880349c6448 R13: dffffc0000000000 R14: ffff8880349c6410 R15: 1ffff92000a9eda4 might_alloc include/linux/sched/mm.h:271 [inline] prepare_alloc_pages+0x15a/0x5f0 mm/page_alloc.c:5427 __alloc_pages+0x130/0x4f0 mm/page_alloc.c:5646 __alloc_pages_bulk+0x49a/0x920 mm/page_alloc.c:5605 vm_area_alloc_pages mm/vmalloc.c:2968 [inline] __vmalloc_area_node mm/vmalloc.c:3071 [inline] __vmalloc_node_range+0x70f/0x13b0 mm/vmalloc.c:3243 __vmalloc_node mm/vmalloc.c:3308 [inline] __vmalloc_area_node mm/vmalloc.c:3054 [inline] __vmalloc_node_range+0x555/0x13b0 mm/vmalloc.c:3243 kvmalloc_node+0x13b/0x180 mm/util.c:606 kvmalloc include/linux/slab.h:716 [inline] kvmalloc_array include/linux/slab.h:734 [inline] kvcalloc include/linux/slab.h:739 [inline] check_btf_line kernel/bpf/verifier.c:11405 [inline] check_btf_info kernel/bpf/verifier.c:11601 [inline] bpf_check+0xe614/0x10db0 kernel/bpf/verifier.c:15560 bpf_prog_load+0x101a/0x1560 kernel/bpf/syscall.c:2651 __sys_bpf+0x5b8/0x780 kernel/bpf/syscall.c:5031 __do_sys_bpf kernel/bpf/syscall.c:5135 [inline] __se_sys_bpf kernel/bpf/syscall.c:5133 [inline] __x64_sys_bpf+0x78/0x90 kernel/bpf/syscall.c:5133 do_syscall_x64 arch/x86/entry/common.c:46 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7fdb4799cdd9 Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fdb488d6028 EFLAGS: 00000246 ORIG_RAX: 0000000000000141 RAX: ffffffffffffffda RBX: 00007fdb47c15fa0 RCX: 00007fdb4799cdd9 RDX: 0000000000000080 RSI: 0000200000000440 RDI: 0000000000000005 RBP: 00007fdb47a32d69 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fdb47c16038 R14: 00007fdb47c15fa0 R15: 00007fff0b0f5fc8