bridge0: received packet on veth0_to_bridge with own address as source address (addr:e6:87:3c:70:92:37, vlan:0) rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P30044/1:b..l rcu: (detected by 1, t=10503 jiffies, g=116569, q=2221 ncpus=2) task:syz.0.6424 state:R running task stack:25592 pid:30044 tgid:30044 ppid:29236 task_flags:0x400040 flags:0x00080002 Call Trace: context_switch kernel/sched/core.c:5260 [inline] __schedule+0x14ea/0x5050 kernel/sched/core.c:6867 preempt_schedule_irq+0x4d/0xa0 kernel/sched/core.c:7194 irqentry_exit+0x597/0x620 kernel/entry/common.c:216 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697 RIP: 0010:lock_acquire+0x221/0x330 kernel/locking/lockdep.c:5872 Code: ff ff ff e8 41 c0 f6 09 f7 44 24 08 00 02 00 00 0f 84 3a ff ff ff 65 48 8b 05 2b 61 52 11 48 3b 44 24 58 75 33 fb 48 83 c4 60 <5b> 41 5c 41 5d 41 5e 41 5f 5d e9 50 a4 f9 09 cc 48 8d 3d 58 17 52 RSP: 0018:ffffc9000446f278 EFLAGS: 00000286 RAX: ec3eee9f12f9b700 RBX: 0000000000000000 RCX: 0000000000000046 RDX: 000000005a31afcd RSI: ffffffff8df34c9c RDI: ffffffff8c073a00 RBP: ffffffff81759195 R08: ffffffff81759195 R09: ffffffff8e55a360 R10: ffffc9000446f3d8 R11: ffffffff81afb170 R12: 0000000000000002 R13: ffffffff8e55a360 R14: 0000000000000000 R15: 0000000000000246 rcu_lock_acquire include/linux/rcupdate.h:331 [inline] rcu_read_lock include/linux/rcupdate.h:867 [inline] class_rcu_constructor include/linux/rcupdate.h:1195 [inline] unwind_next_frame+0xc2/0x23c0 arch/x86/kernel/unwind_orc.c:495 arch_stack_walk+0x11b/0x150 arch/x86/kernel/stacktrace.c:25 stack_trace_save+0xa9/0x100 kernel/stacktrace.c:122 kasan_save_stack mm/kasan/common.c:57 [inline] kasan_save_track+0x3e/0x80 mm/kasan/common.c:78 kasan_save_free_info+0x46/0x50 mm/kasan/generic.c:584 poison_slab_object mm/kasan/common.c:253 [inline] __kasan_slab_free+0x5c/0x80 mm/kasan/common.c:285 kasan_slab_free include/linux/kasan.h:235 [inline] slab_free_hook mm/slub.c:2540 [inline] slab_free mm/slub.c:6674 [inline] kmem_cache_free+0x195/0x610 mm/slub.c:6785 sctp_ulpq_flush+0x25f/0x410 net/sctp/ulpqueue.c:66 sctp_association_free+0x24c/0x7f0 net/sctp/associola.c:343 sctp_cmd_delete_tcb net/sctp/sm_sideeffect.c:950 [inline] sctp_cmd_interpreter net/sctp/sm_sideeffect.c:1336 [inline] sctp_side_effects net/sctp/sm_sideeffect.c:1204 [inline] sctp_do_sm+0x3f6b/0x5cf0 net/sctp/sm_sideeffect.c:1175 sctp_primitive_ABORT+0x98/0xc0 net/sctp/primitive.c:104 sctp_close+0x2d4/0x940 net/sctp/socket.c:1527 inet_release+0x143/0x190 net/ipv4/af_inet.c:437 __sock_release net/socket.c:662 [inline] sock_close+0xc3/0x240 net/socket.c:1455 __fput+0x44f/0xa70 fs/file_table.c:468 task_work_run+0x1d9/0x270 kernel/task_work.c:233 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline] __exit_to_user_mode_loop kernel/entry/common.c:44 [inline] exit_to_user_mode_loop+0xed/0x480 kernel/entry/common.c:75 __exit_to_user_mode_prepare include/linux/irq-entry-common.h:226 [inline] syscall_exit_to_user_mode_prepare include/linux/irq-entry-common.h:256 [inline] syscall_exit_to_user_mode_work include/linux/entry-common.h:159 [inline] syscall_exit_to_user_mode include/linux/entry-common.h:194 [inline] do_syscall_64+0x2b7/0xf80 arch/x86/entry/syscall_64.c:100 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fba9a79bf79 RSP: 002b:00007ffc5d4bb528 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4 RAX: 0000000000000000 RBX: 00007fba9aa17da0 RCX: 00007fba9a79bf79 RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003 RBP: 00007fba9aa17da0 R08: 00007fba9aa16128 R09: 0000000000000000 R10: 00000000003ffcac R11: 0000000000000246 R12: 00000000000adfc4 R13: 00007fba9aa1618c R14: 00000000000add90 R15: 00007ffc5d4bb630 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 bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:1b, 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:e6:87:3c:70:92:37, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:e6:87:3c:70:92:37, vlan:0) net_ratelimit: 15328 callbacks suppressed bridge0: received packet on veth0_to_bridge with own address as source address (addr:e6:87:3c:70:92:37, 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:e6:87:3c:70:92:37, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:e6:87:3c:70:92:37, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:e6:87:3c:70:92:37, vlan:0)