rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: rcu: 0-....: (5 ticks this GP) idle=e4d/1/0x4000000000000002 softirq=41144/41144 fqs=2096 (detected by 1, t=10502 jiffies, g=54649, q=1457) Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 14790 Comm: syz.5.3738 Not tainted 5.15.189-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025 RIP: 0010:hlock_class kernel/locking/lockdep.c:197 [inline] RIP: 0010:__lock_acquire+0x10b7/0x7c60 kernel/locking/lockdep.c:5008 Code: 03 89 c3 81 e3 ff 1f 00 00 c1 e8 03 25 f8 03 00 00 48 8d b8 c0 70 fb 8f be 08 00 00 00 e8 91 1d 60 00 48 0f a3 1d 59 65 9f 0e <0f> 83 87 01 00 00 48 8d 04 5b c1 e0 06 48 8d 98 80 ef 93 8f 49 b8 RSP: 0018:ffffc900000073e0 EFLAGS: 00000057 RAX: 0000000000000001 RBX: 0000000000000015 RCX: ffffffff815c0b5f RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff8ffb70c0 RBP: ffffc90000007630 R08: dffffc0000000000 R09: fffffbfff1ff6e19 R10: fffffbfff1ff6e19 R11: 1ffffffff1ff6e18 R12: 00000000317fc64f R13: ffff8880260f8000 R14: 000000004fe2bad8 R15: ffff8880260f8b60 FS: 00007f21a5cfa6c0(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f5a1c6e9ffc CR3: 0000000029ee4000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000200000000300 DR2: 0000200000000300 DR3: 0000200000000300 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: lock_acquire+0x197/0x3f0 kernel/locking/lockdep.c:5623 rcu_lock_acquire+0x2a/0x30 include/linux/rcupdate.h:312 rcu_read_lock include/linux/rcupdate.h:739 [inline] BPF_PROG_RUN_ARRAY include/linux/bpf.h:1333 [inline] trace_call_bpf+0xf3/0x5a0 kernel/trace/bpf_trace.c:127 perf_trace_run_bpf_submit+0x79/0x1c0 kernel/events/core.c:10002 perf_trace_preemptirq_template+0x2be/0x380 include/trace/events/preemptirq.h:14 trace_irq_enable_rcuidle+0x108/0x180 include/trace/events/preemptirq.h:40 trace_hardirqs_on+0x57/0x80 kernel/trace/trace_preemptirq.c:44 asm_sysvec_irq_work+0x16/0x20 arch/x86/include/asm/idtentry.h:713 RIP: 0010:rcu_read_unlock_special+0x84/0x480 kernel/rcu/tree_plugin.h:671 Code: f1 f1 f1 00 f2 f2 f2 4a 89 04 2b 66 42 c7 44 2b 09 f3 f3 42 c6 44 2b 0b f3 65 44 8b 35 7d 16 9e 7e 41 f7 c6 00 00 f0 00 74 45 <48> c7 44 24 20 0e 36 e0 45 4a c7 04 2b 00 00 00 00 66 42 c7 44 2b RSP: 0018:ffffc90000007ae0 EFLAGS: 00000206 RAX: 446bcba9c9fa5700 RBX: 1ffff92000000f60 RCX: 446bcba9c9fa5700 RDX: dffffc0000000000 RSI: ffffffff8a0b15c0 RDI: ffffffff8a599340 RBP: ffffc90000007bb8 R08: dffffc0000000000 R09: ffffed101720765a R10: ffffed101720765a R11: 1ffff11017207659 R12: ffffffff8c120800 R13: dffffc0000000000 R14: 0000000000000246 R15: 0000000000000001 __rcu_read_unlock+0x78/0xd0 kernel/rcu/tree_plugin.h:422 rcu_read_unlock include/linux/rcupdate.h:771 [inline] ieee80211_iterate_active_interfaces_atomic+0x132/0x140 net/mac80211/util.c:831 mac80211_hwsim_beacon+0x9b/0x180 drivers/net/wireless/mac80211_hwsim.c:1865 __run_hrtimer kernel/time/hrtimer.c:1690 [inline] __hrtimer_run_queues+0x53d/0xc40 kernel/time/hrtimer.c:1754 hrtimer_run_softirq+0x176/0x240 kernel/time/hrtimer.c:1771 handle_softirqs+0x328/0x820 kernel/softirq.c:576 __do_softirq kernel/softirq.c:610 [inline] invoke_softirq kernel/softirq.c:450 [inline] __irq_exit_rcu+0x12f/0x220 kernel/softirq.c:659 irq_exit_rcu+0x5/0x20 kernel/softirq.c:671 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1108 [inline] sysvec_apic_timer_interrupt+0xa0/0xc0 arch/x86/kernel/apic/apic.c:1108 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:676 RIP: 0010:preempt_schedule_irq+0xac/0x150 kernel/sched/core.c:6780 Code: 44 24 20 f6 44 24 21 02 74 0b 0f 0b 48 f7 03 08 00 00 00 74 70 bf 01 00 00 00 e8 cf f6 a0 f7 e8 6a 6a cd f7 fb bf 01 00 00 00 cf b5 ff ff 48 c7 44 24 40 00 00 00 00 9c 8f 44 24 40 8b 44 24 RSP: 0018:ffffc900034af060 EFLAGS: 00000286 RAX: 446bcba9c9fa5700 RBX: 0000000000000000 RCX: 446bcba9c9fa5700 RDX: dffffc0000000000 RSI: ffffffff8a0b15c0 RDI: 0000000000000001 RBP: ffffc900034af110 R08: dffffc0000000000 R09: ffffed101720765a R10: ffffed101720765a R11: 1ffff11017207659 R12: 0000000000000000 R13: 0000000000000000 R14: dffffc0000000000 R15: 1ffff92000695e0c irqentry_exit+0x63/0x70 kernel/entry/common.c:432 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:676 RIP: 0010:_compound_head include/linux/page-flags.h:198 [inline] RIP: 0010:virt_to_head_page include/linux/mm.h:902 [inline] RIP: 0010:qlink_to_cache mm/kasan/quarantine.c:120 [inline] RIP: 0010:qlist_free_all+0x5a/0x90 mm/kasan/quarantine.c:173 Code: e8 db 03 00 00 4d 89 ef 4d 85 ed 74 2a 4c 89 f6 4d 85 f6 75 e5 4c 89 ff e8 d3 32 79 ff 48 c1 e8 06 48 83 e0 c0 4a 8b 4c 20 08 c1 01 74 c4 48 ff c9 48 89 c8 eb bf 48 c7 43 08 00 00 00 00 48 RSP: 0018:ffffc900034af1d0 EFLAGS: 00000206 RAX: 0000000001f75ec0 RBX: ffffc900034af200 RCX: ffffea00009260c0 RDX: ffffc9001545f000 RSI: 00000000000213f3 RDI: 00000000000213f4 RBP: ffffc900034af458 R08: ffff888019bfe880 R09: 0000000080400039 R10: ffffed101720765a R11: 1ffff11017207659 R12: ffffea0000000000 R13: ffff88807dd7bdc0 R14: 0000000000000000 R15: ffff88807dd7bdc0 kasan_quarantine_reduce+0x150/0x160 mm/kasan/quarantine.c:283 __kasan_slab_alloc+0x2f/0xd0 mm/kasan/common.c:444 kasan_slab_alloc include/linux/kasan.h:254 [inline] slab_post_alloc_hook+0x4c/0x380 mm/slab.h:519 slab_alloc_node mm/slub.c:3220 [inline] __kmalloc_node+0x15a/0x3b0 mm/slub.c:4451 kmalloc_node include/linux/slab.h:627 [inline] __vmalloc_area_node mm/vmalloc.c:2911 [inline] __vmalloc_node_range+0x2dd/0x8b0 mm/vmalloc.c:3030 __vmalloc_node mm/vmalloc.c:3080 [inline] vzalloc+0x75/0x80 mm/vmalloc.c:3150 bpf_check+0x1b2/0xf090 kernel/bpf/verifier.c:14043 bpf_prog_load+0x1043/0x1550 kernel/bpf/syscall.c:2348 __sys_bpf+0x4c2/0x670 kernel/bpf/syscall.c:4651 __do_sys_bpf kernel/bpf/syscall.c:4755 [inline] __se_sys_bpf kernel/bpf/syscall.c:4753 [inline] __x64_sys_bpf+0x78/0x90 kernel/bpf/syscall.c:4753 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x66/0xd0 RIP: 0033:0x7f21a7a92be9 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:00007f21a5cfa038 EFLAGS: 00000246 ORIG_RAX: 0000000000000141 RAX: ffffffffffffffda RBX: 00007f21a7cb9fa0 RCX: 00007f21a7a92be9 RDX: 0000000000000080 RSI: 0000200000000300 RDI: 0000000000000005 RBP: 00007f21a7b15e19 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f21a7cba038 R14: 00007f21a7cb9fa0 R15: 00007ffe19305ac8