rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 1-.... } 2627 jiffies s: 147329 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: 28594 Comm: syz.5.6261 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 RIP: 0010:check_region_inline mm/kasan/generic.c:-1 [inline] RIP: 0010:kasan_check_range+0x33/0x290 mm/kasan/generic.c:189 Code: 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 00 0f 82 fa 01 00 00 <49> bc 01 00 00 00 00 fc ff df 49 89 fe 49 c1 ee 03 49 ba 00 00 00 RSP: 0018:ffffc900001e03b0 EFLAGS: 00000046 RAX: 0000000000000001 RBX: 000000000000002c RCX: ffffffff81642ab1 RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff90ad8240 RBP: ffffc900001e0630 R08: 000000000001ffff R09: 0000000000000001 R10: dffffc0000000000 R11: fffffbfff1c3e906 R12: ffff888027e33b80 R13: 0000000000000000 R14: 0000000000000000 R15: 000000000000002c FS: 00007f18d23e26c0(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000000 CR3: 000000007573c000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000008d24 DR3: 0000000000000000 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:4723 [inline] __lock_acquire+0x541/0x7d10 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 include/linux/rcupdate.h:791 [inline] trace_call_bpf+0xe0/0x6b0 kernel/trace/bpf_trace.c:134 perf_trace_run_bpf_submit+0x79/0x1c0 kernel/events/core.c:9997 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 92 50 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:ffffc900001e0aa0 EFLAGS: 00000206 RAX: 6200c3dc9b4a4f00 RBX: 1ffff9200003c15c RCX: 6200c3dc9b4a4f00 RDX: dffffc0000000000 RSI: ffffffff8a8c0620 RDI: ffffffff8adf0020 RBP: ffffc900001e0b90 R08: ffff8880b8f3580b R09: 1ffff110171e6b01 R10: dffffc0000000000 R11: ffffed10171e6b02 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+0x560/0xd70 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:seqcount_lockdep_reader_access+0x144/0x190 include/linux/seqlock.h:105 Code: 00 00 00 00 9c 8f 44 24 20 f7 44 24 20 00 02 00 00 41 c6 04 07 f8 75 42 41 f7 c5 00 02 00 00 74 01 fb 48 c7 04 24 0e 36 e0 45 <4b> c7 04 27 00 00 00 00 43 c7 44 27 08 00 00 00 00 65 48 8b 04 25 RSP: 0018:ffffc9000c53f4e0 EFLAGS: 00000206 RAX: dffffc0000000004 RBX: ffff88813fffa7c8 RCX: 6200c3dc9b4a4f00 RDX: dffffc0000000000 RSI: ffffffff8a8c0620 RDI: ffffffff8adf0020 RBP: ffffc9000c53f598 R08: ffff8880b8f3580b R09: 1ffff110171e6b01 R10: dffffc0000000000 R11: ffffed10171e6b02 R12: dffffc0000000000 R13: 0000000000000a06 R14: ffffffff81c8c24a R15: 1ffff920018a7e9c read_seqbegin include/linux/seqlock.h:893 [inline] zone_span_seqbegin include/linux/memory_hotplug.h:132 [inline] page_outside_zone_boundaries mm/page_alloc.c:627 [inline] bad_range+0x7a/0x2d0 mm/page_alloc.c:654 rmqueue mm/page_alloc.c:3887 [inline] get_page_from_freelist+0x1a02/0x1ab0 mm/page_alloc.c:4325 __alloc_pages+0x1ec/0x4f0 mm/page_alloc.c:5614 vm_area_alloc_pages mm/vmalloc.c:3002 [inline] __vmalloc_area_node mm/vmalloc.c:3071 [inline] __vmalloc_node_range+0x944/0x13b0 mm/vmalloc.c:3243 __vmalloc_node mm/vmalloc.c:3308 [inline] vmalloc+0x75/0x80 mm/vmalloc.c:3341 netlink_alloc_large_skb net/netlink/af_netlink.c:1187 [inline] netlink_sendmsg+0x5ec/0xbd0 net/netlink/af_netlink.c:1847 sock_sendmsg_nosec net/socket.c:718 [inline] __sock_sendmsg net/socket.c:730 [inline] sock_write_iter+0x2d9/0x3e0 net/socket.c:1143 call_write_iter include/linux/fs.h:2265 [inline] new_sync_write fs/read_write.c:491 [inline] vfs_write+0x4b1/0xa30 fs/read_write.c:584 ksys_write+0x14c/0x250 fs/read_write.c:637 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: 0033:0x7f18d159acb9 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:00007f18d23e2028 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007f18d1815fa0 RCX: 00007f18d159acb9 RDX: 000000000000fe33 RSI: 0000200000000040 RDI: 0000000000000005 RBP: 00007f18d1608bf7 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f18d1816038 R14: 00007f18d1815fa0 R15: 00007ffd49ba4d78