bridge0: received packet on veth1_to_bridge with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0) bridge0: received packet on veth1_to_bridge with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0) rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P9372/1:b..l rcu: (detected by 0, t=10503 jiffies, g=30601, q=3044 ncpus=2) task:syz.0.839 state:R running task stack:25504 pid:9372 tgid:9370 ppid:5617 task_flags:0x400140 flags:0x00080002 Call Trace: context_switch kernel/sched/core.c:5533 [inline] __schedule+0x17db/0x58f0 kernel/sched/core.c:7284 preempt_schedule_irq+0x4b/0x90 kernel/sched/core.c:7606 irqentry_exit_to_kernel_mode include/linux/irq-entry-common.h:539 [inline] irqentry_exit+0x14f/0x910 kernel/entry/common.c:167 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:674 RIP: 0010:orc_ip arch/x86/kernel/unwind_orc.c:81 [inline] RIP: 0010:__orc_find arch/x86/kernel/unwind_orc.c:103 [inline] RIP: 0010:orc_find arch/x86/kernel/unwind_orc.c:238 [inline] RIP: 0010:unwind_next_frame+0x4fb/0x2550 arch/x86/kernel/unwind_orc.c:510 Code: c1 e8 3f 48 01 c8 48 83 e0 fe 49 8d 1c 47 48 89 d8 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df 0f b6 04 08 84 c0 75 27 48 63 03 <48> 01 d8 48 8d 4b 04 48 39 e8 4c 0f 46 f9 48 8d 43 fc 4c 0f 47 e0 RSP: 0018:ffffc9000d3ef340 EFLAGS: 00000246 RAX: fffffffff18da7e6 RBX: ffffffff909b8f4c RCX: dffffc0000000000 RDX: ffffffff909b8f4c RSI: ffffffff911e88f4 RDI: ffffffff8c6dad20 RBP: ffffffff82293b72 R08: 0000000000000001 R09: 0000000000000000 R10: ffffc9000d3ef438 R11: ffffffff81b2a310 R12: ffffffff909b8f4c R13: ffffffff909b8f4c R14: ffffc9000d3ef3e8 R15: ffffffff909b8f4c arch_stack_walk+0x11b/0x150 arch/x86/kernel/stacktrace.c:25 stack_trace_save+0xa9/0x100 kernel/stacktrace.c:122 save_stack+0x122/0x230 mm/page_owner.c:183 __reset_page_owner+0x71/0x1f0 mm/page_owner.c:338 reset_page_owner include/linux/page_owner.h:26 [inline] __free_pages_prepare mm/page_alloc.c:1418 [inline] __free_frozen_pages+0xc93/0xd90 mm/page_alloc.c:2962 __slab_free+0x274/0x2c0 mm/slub.c:5823 qlink_free mm/kasan/quarantine.c:163 [inline] qlist_free_all+0x99/0x100 mm/kasan/quarantine.c:179 kasan_quarantine_reduce+0x148/0x160 mm/kasan/quarantine.c:286 __kasan_kmalloc+0x22/0xb0 mm/kasan/common.c:417 kasan_kmalloc include/linux/kasan.h:263 [inline] __do_kmalloc_node mm/slub.c:5414 [inline] __kmalloc_noprof+0x36b/0x720 mm/slub.c:5439 _kmalloc_noprof include/linux/slab.h:995 [inline] _kzalloc_noprof include/linux/slab.h:1312 [inline] lsm_blob_alloc security/security.c:218 [inline] lsm_sock_alloc security/security.c:4477 [inline] security_sk_alloc+0x52/0x360 security/security.c:4493 sk_prot_alloc+0x101/0x210 net/core/sock.c:2255 sk_alloc+0x3a/0x390 net/core/sock.c:2308 inet6_create+0x81a/0x1270 net/ipv6/af_inet6.c:178 __sock_create+0x4b3/0x9d0 net/socket.c:1679 inet_ctl_sock_create+0xa2/0x220 net/ipv4/af_inet.c:1639 sctp_ctl_sock_init net/sctp/protocol.c:824 [inline] sctp_ctrlsock_init+0x47/0x170 net/sctp/protocol.c:1445 ops_init+0x35d/0x5d0 net/core/net_namespace.c:137 setup_net+0x118/0x350 net/core/net_namespace.c:443 copy_net_ns+0x53b/0x780 net/core/net_namespace.c:582 create_new_namespaces+0x3f0/0x6b0 kernel/nsproxy.c:132 unshare_nsproxy_namespaces+0x149/0x190 kernel/nsproxy.c:234 ksys_unshare+0x5a7/0x950 kernel/fork.c:3297 __do_sys_unshare kernel/fork.c:3361 [inline] __se_sys_unshare kernel/fork.c:3359 [inline] __x64_sys_unshare+0x38/0x50 kernel/fork.c:3359 do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline] do_syscall_64+0x166/0x520 arch/x86/entry/syscall_64.c:84 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fbf3a79e159 RSP: 002b:00007fbf389d5028 EFLAGS: 00000246 ORIG_RAX: 0000000000000110 RAX: ffffffffffffffda RBX: 00007fbf3aa26090 RCX: 00007fbf3a79e159 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000068040000 RBP: 00007fbf3a83506b R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fbf3aa26128 R14: 00007fbf3aa26090 R15: 00007ffe13b01c08 net_ratelimit: 20736 callbacks suppressed bridge0: received packet on bridge_slave_1 with own address as source address (addr:aa:aa:aa:aa:aa:1c, vlan:0) bridge0: received packet on bridge_slave_1 with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0) bridge0: received packet on veth1_to_bridge with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0) bridge0: received packet on veth1_to_bridge with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0) bridge0: received packet on bridge_slave_1 with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0) bridge0: received packet on bridge_slave_1 with own address as source address (addr:aa:aa:aa:aa:aa:1c, vlan:0) bridge0: received packet on bridge_slave_1 with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0) bridge0: received packet on veth1_to_bridge with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)