bridge0: received packet on veth0_to_bridge with own address as source address (addr:72:ea:ad:0b:39:78, vlan:0) rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P5832/1:b..l rcu: (detected by 0, t=10502 jiffies, g=11057, q=2430 ncpus=2) task:syz-executor state:R running task stack:23688 pid:5832 tgid:5832 ppid:5822 task_flags:0x400140 flags:0x00080000 Call Trace: context_switch kernel/sched/core.c:5325 [inline] __schedule+0x1190/0x5de0 kernel/sched/core.c:6929 preempt_schedule_irq+0x51/0x90 kernel/sched/core.c:7256 irqentry_exit+0x36/0x90 kernel/entry/common.c:211 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697 RIP: 0010:lock_acquire+0x62/0x350 kernel/locking/lockdep.c:5872 Code: 9b 08 12 83 f8 07 0f 87 bc 02 00 00 89 c0 48 0f a3 05 92 d4 e9 0e 0f 82 74 02 00 00 8b 35 ea 04 ea 0e 85 f6 0f 85 8d 00 00 00 <48> 8b 44 24 30 65 48 2b 05 a9 9a 08 12 0f 85 c7 02 00 00 48 83 c4 RSP: 0018:ffffc900042e7b40 EFLAGS: 00000206 RAX: 0000000000000046 RBX: ffffffff8e3c45a0 RCX: 0000000023ce5f5f RDX: 0000000000000000 RSI: ffffffff8da0240a RDI: ffffffff8bf075c0 RBP: 0000000000000002 R08: c050855d8198e136 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 rcu_lock_acquire include/linux/rcupdate.h:331 [inline] rcu_read_lock include/linux/rcupdate.h:867 [inline] __page_table_check_zero+0x13d/0x5d0 mm/page_table_check.c:138 page_table_check_free include/linux/page_table_check.h:43 [inline] free_pages_prepare mm/page_alloc.c:1395 [inline] __free_frozen_pages+0x7d0/0x1160 mm/page_alloc.c:2906 qlink_free mm/kasan/quarantine.c:163 [inline] qlist_free_all+0x4d/0x120 mm/kasan/quarantine.c:179 kasan_quarantine_reduce+0x195/0x1e0 mm/kasan/quarantine.c:286 __kasan_slab_alloc+0x69/0x90 mm/kasan/common.c:352 kasan_slab_alloc include/linux/kasan.h:252 [inline] slab_post_alloc_hook mm/slub.c:4970 [inline] slab_alloc_node mm/slub.c:5280 [inline] kmem_cache_alloc_noprof+0x250/0x6e0 mm/slub.c:5287 getname_flags.part.0+0x4c/0x550 fs/namei.c:146 getname_flags+0x93/0xf0 include/linux/audit.h:345 user_path_at+0x24/0x60 fs/namei.c:3214 ksys_umount fs/namespace.c:2061 [inline] __do_sys_umount fs/namespace.c:2069 [inline] __se_sys_umount fs/namespace.c:2067 [inline] __x64_sys_umount+0x10a/0x1a0 fs/namespace.c:2067 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xcd/0xfa0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7ff81ed902f7 RSP: 002b:00007ffc1da77148 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6 RAX: ffffffffffffffda RBX: 00007ff81ee11d7d RCX: 00007ff81ed902f7 RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffc1da78290 RBP: 00007ffc1da7827c R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc1da78290 R13: 00007ff81ee11d7d R14: 00000000000185f5 R15: 00007ffc1da782d0 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:72:ea:ad:0b:39:78, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:72:ea:ad:0b:39:78, 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:72:ea:ad:0b:39:78, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:72:ea:ad:0b:39:78, 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:72:ea:ad:0b:39:78, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:72:ea:ad:0b:39:78, vlan:0) bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:1b, vlan:0)