rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 1-.... } 2651 jiffies s: 271969 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: 19040 Comm: syz.9.12235 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 RIP: 0010:kasan_check_range+0x1b4/0x290 mm/kasan/generic.c:-1 Code: 49 89 df 49 8d 5f 07 4d 85 ff 49 0f 49 df 48 83 e3 f8 49 29 df 74 0e 41 80 3b 00 75 69 49 ff c3 49 ff cf 75 f2 5b 41 5c 41 5e <41> 5f 5d c3 45 84 ff 0f 85 91 00 00 00 41 f7 c7 00 ff 00 00 0f 85 RSP: 0018:ffffc900001e0528 EFLAGS: 00000056 RAX: dffffc0000000001 RBX: ffff8880b8f340f8 RCX: ffffffff84104bfb RDX: 0000000000000001 RSI: 0000000000000008 RDI: ffff8880b8f340f8 RBP: ffffc900001e05e8 R08: ffff8880b8f340ff R09: 1ffff110171e681f R10: dffffc0000000000 R11: ffffed10171e6820 R12: 1ffff9200003c0ac R13: 0000000000000000 R14: 1ffff110171e773e R15: 0000000000000001 FS: 00007ff5ecc4d6c0(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000000 CR3: 000000001a3c0000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: instrument_atomic_write include/linux/instrumented.h:87 [inline] llist_add_batch+0xcb/0x180 lib/llist.c:33 llist_add include/linux/llist.h:221 [inline] __irq_work_queue_local+0xad/0x190 kernel/irq_work.c:97 irq_work_queue_on+0x13c/0x260 kernel/irq_work.c:165 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: ddb0f5bf10f72c00 RBX: 1ffff9200003c160 RCX: ddb0f5bf10f72c00 RDX: dffffc0000000000 RSI: ffffffff8a8c1120 RDI: ffffffff8adf1320 RBP: ffffc900001e0bb0 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+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:put_cpu_partial+0x1b0/0x250 mm/slub.c:2666 Code: 3b 44 24 18 0f 85 b4 00 00 00 48 83 c4 20 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 ec dd 5a 08 f7 c5 00 02 00 00 74 c0 fb 4d 85 e4 <75> bf eb c8 e8 97 17 3b 02 85 c0 0f 84 e9 fe ff ff 83 3d a0 20 4d RSP: 0018:ffffc9000582fc50 EFLAGS: 00000246 RAX: ddb0f5bf10f72c00 RBX: ffff888017442280 RCX: ddb0f5bf10f72c00 RDX: dffffc0000000000 RSI: ffffffff8a8c1120 RDI: ffffffff8adf1320 RBP: 0000000000000286 R08: ffff8880b8f3580b R09: 1ffff110171e6b01 R10: dffffc0000000000 R11: ffffed10171e6b02 R12: 0000000000000000 R13: 0000000000000001 R14: ffff88802a248000 R15: ffff8880b8f3e8d0 qlink_free mm/kasan/quarantine.c:168 [inline] qlist_free_all+0x76/0xe0 mm/kasan/quarantine.c:187 kasan_quarantine_reduce+0x144/0x160 mm/kasan/quarantine.c:294 __kasan_slab_alloc+0x1e/0x80 mm/kasan/common.c:306 kasan_slab_alloc include/linux/kasan.h:201 [inline] slab_post_alloc_hook+0x4b/0x480 mm/slab.h:737 slab_alloc_node mm/slub.c:3359 [inline] slab_alloc mm/slub.c:3367 [inline] __kmem_cache_alloc_lru mm/slub.c:3374 [inline] kmem_cache_alloc_lru+0x11a/0x2e0 mm/slub.c:3390 alloc_inode_sb include/linux/fs.h:3245 [inline] sock_alloc_inode+0x24/0xc0 net/socket.c:306 alloc_inode fs/inode.c:261 [inline] new_inode_pseudo+0x5f/0x1c0 fs/inode.c:1063 sock_alloc net/socket.c:631 [inline] __sock_create+0x129/0x940 net/socket.c:1513 sock_create net/socket.c:1605 [inline] __sys_socket_create net/socket.c:1642 [inline] __sys_socket+0xc4/0x190 net/socket.c:1670 __do_sys_socket net/socket.c:1683 [inline] __se_sys_socket net/socket.c:1681 [inline] __x64_sys_socket+0x76/0x80 net/socket.c:1681 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: 0033:0x7ff5ebd9cdd9 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:00007ff5ecc4d028 EFLAGS: 00000246 ORIG_RAX: 0000000000000029 RAX: ffffffffffffffda RBX: 00007ff5ec015fa0 RCX: 00007ff5ebd9cdd9 RDX: 000000000000003a RSI: 0000000000000003 RDI: 000000000000000a RBP: 00007ff5ebe32d69 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ff5ec016038 R14: 00007ff5ec015fa0 R15: 00007ffdfd322468