bridge0: received packet on veth0_to_bridge with own address as source address (addr:a6:85:00:0e:6e:22, vlan:0) bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:1b, vlan:0) rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: rcu: 0-....: (1 GPs behind) idle=61d/1/0x4000000000000000 softirq=11527/11528 fqs=4068 (detected by 1, t=10502 jiffies, g=15117, q=1277) Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 5914 Comm: syz.0.419 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 RIP: 0010:__lock_acquire+0x10d5/0x7c60 kernel/locking/lockdep.c:-1 Code: 71 26 60 00 48 0f a3 1d e9 90 9e 0e 0f 83 87 01 00 00 48 8d 04 5b c1 e0 06 48 8d 98 80 1f 93 8f 49 b8 00 00 00 00 00 fc ff df 9b 01 00 00 e8 41 a4 7b 02 85 c0 0f 84 fe 48 00 00 48 c7 c0 48 RSP: 0018:ffffc90000006f40 EFLAGS: 00000006 RAX: 0000000000000fc0 RBX: ffffffff8f932f40 RCX: ffffffff815c0fcf RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff8ffaa0c0 RBP: ffffc90000007190 R08: dffffc0000000000 R09: fffffbfff1ff5419 R10: fffffbfff1ff5419 R11: 1ffffffff1ff5418 R12: 00000000e3db5d87 R13: ffff88807a613b80 R14: 0000000038c72385 R15: ffff88807a614730 FS: 00007f34e26766c0(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00005555866bb5c8 CR3: 000000004cf3f000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600 Call Trace: lock_acquire+0x197/0x3f0 kernel/locking/lockdep.c:5623 rcu_lock_acquire+0x2a/0x30 include/linux/rcupdate.h:313 rcu_read_lock include/linux/rcupdate.h:740 [inline] __task_pid_nr_ns+0x21/0x420 kernel/pid.c:497 perf_event_pid_type kernel/events/core.c:1446 [inline] perf_event_tid kernel/events/core.c:1460 [inline] __perf_event_header__init_id+0x20b/0x500 kernel/events/core.c:7106 perf_prepare_sample+0x158/0x1cb0 kernel/events/core.c:7624 __perf_event_output kernel/events/core.c:7802 [inline] perf_event_output_forward+0x146/0x280 kernel/events/core.c:7822 __perf_event_overflow+0x364/0x530 kernel/events/core.c:9515 perf_tp_event+0x32c/0xb50 kernel/events/core.c:10047 perf_trace_run_bpf_submit+0xf3/0x1c0 kernel/events/core.c:10021 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:674 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 ed 11 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: 54e61c107654e400 RBX: 1ffff92000000f60 RCX: 54e61c107654e400 RDX: dffffc0000000000 RSI: ffffffff8a0b1be0 RDI: ffffffff8a59e800 RBP: ffffc90000007bb8 R08: dffffc0000000000 R09: fffffbfff1ff542c R10: fffffbfff1ff542c R11: 1ffffffff1ff542b R12: ffffffff8c120c00 R13: dffffc0000000000 R14: 0000000000000246 R15: 0000000000000001 __rcu_read_unlock+0x78/0xd0 kernel/rcu/tree_plugin.h:422 rcu_read_unlock include/linux/rcupdate.h:772 [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:1685 [inline] __hrtimer_run_queues+0x53d/0xc40 kernel/time/hrtimer.c:1749 hrtimer_run_softirq+0x176/0x240 kernel/time/hrtimer.c:1766 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:mnt_user_ns include/linux/mount.h:81 [inline] RIP: 0010:lookup_open fs/namei.c:3427 [inline] RIP: 0010:open_last_lookups fs/namei.c:3540 [inline] RIP: 0010:path_openat+0xa3a/0x2f30 fs/namei.c:3747 Code: 48 89 84 24 f0 00 00 00 42 80 3c 38 00 74 08 48 89 df e8 49 ac f2 ff 48 8b 1b 48 83 c3 18 48 89 d8 48 c1 e8 03 42 80 3c 38 00 <74> 08 48 89 df e8 2c ac f2 ff 48 8b 1b 44 89 ee 83 e6 40 31 ff e8 RSP: 0018:ffffc900033ff9a0 EFLAGS: 00000246 RAX: 1ffff110053acd87 RBX: ffff888029d66c38 RCX: ffff88807a613b80 RDX: 0000000000000000 RSI: 0000000010000000 RDI: 0000000000000004 RBP: ffffc900033ffbf0 R08: dffffc0000000000 R09: fffffbfff2c2329e R10: fffffbfff2c2329e R11: 1ffffffff2c2329d R12: ffffc900033ffc50 R13: 000000000000a6c1 R14: ffff8880745668d0 R15: dffffc0000000000 do_filp_open+0x1b3/0x3e0 fs/namei.c:3777 do_sys_openat2+0x142/0x4a0 fs/open.c:1255 do_sys_open fs/open.c:1271 [inline] __do_sys_openat fs/open.c:1287 [inline] __se_sys_openat fs/open.c:1282 [inline] __x64_sys_openat+0x135/0x160 fs/open.c:1282 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: 0033:0x7f34e4430749 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:00007f34e2676038 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 00007f34e4687090 RCX: 00007f34e4430749 RDX: 00000000000026e1 RSI: 0000200000000080 RDI: ffffffffffffff9c RBP: 00007f34e44b4f91 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f34e4687128 R14: 00007f34e4687090 R15: 00007ffdef519af8 net_ratelimit: 5985 callbacks suppressed bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:1b, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:a6:85:00:0e:6e:22, vlan:0) bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:1b, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:a6:85:00:0e:6e:22, vlan:0) bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:1b, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:a6:85:00:0e:6e:22, vlan:0) bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:1b, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:a6:85:00:0e:6e:22, vlan:0) bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:1b, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:a6:85:00:0e:6e:22, vlan:0) net_ratelimit: 6319 callbacks suppressed bridge0: received packet on veth0_to_bridge with own address as source address (addr:a6:85:00:0e:6e:22, vlan:0) bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:1b, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:a6:85:00:0e:6e:22, vlan:0) bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:1b, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:a6:85:00:0e:6e:22, vlan:0) bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:1b, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:a6:85:00:0e:6e:22, vlan:0) bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:1b, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:a6:85:00:0e:6e:22, vlan:0) bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:1b, vlan:0)