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: Tasks blocked on level-0 rcu_node (CPUs 0-1): P8880/1:b..l rcu: (detected by 0, t=10503 jiffies, g=29409, q=768 ncpus=2) task:syz.6.889 state:R running task stack:24072 pid:8880 tgid:8879 ppid:6712 task_flags:0x40054c flags:0x00080001 Call Trace: context_switch kernel/sched/core.c:5325 [inline] __schedule+0x1798/0x4cc0 kernel/sched/core.c:6929 preempt_schedule_irq+0xb5/0x150 kernel/sched/core.c:7256 irqentry_exit+0x6f/0x90 kernel/entry/common.c:211 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697 RIP: 0010:__orc_find arch/x86/kernel/unwind_orc.c:100 [inline] RIP: 0010:orc_find arch/x86/kernel/unwind_orc.c:227 [inline] RIP: 0010:unwind_next_frame+0x12dc/0x2390 arch/x86/kernel/unwind_orc.c:494 Code: 1c b2 00 48 8b 44 24 18 48 8b 10 48 c7 c7 00 6e 68 8b 89 de e8 55 f3 b3 ff e9 43 06 00 00 49 89 d5 48 89 d5 48 89 d8 48 29 e8 <48> 89 c1 48 c1 f9 02 48 c1 e8 3f 48 01 c8 48 83 e0 fe 4c 8d 3c 45 RSP: 0018:ffffc90004eef0b8 EFLAGS: 00000202 RAX: 0000000000000008 RBX: ffffffff8f8a65a8 RCX: ffffffff8f8a65b0 RDX: ffffffff8f8a65a0 RSI: ffffffff9001d342 RDI: ffffffff8bbf0700 RBP: ffffffff8f8a65a0 R08: 0000000000000022 R09: ffffffff81738d25 R10: dffffc0000000000 R11: ffffffff81ac2f50 R12: ffffffff8100012f R13: ffffffff8f8a65a0 R14: ffffc90004eef188 R15: ffffffff8f8a65ac arch_stack_walk+0x11c/0x150 arch/x86/kernel/stacktrace.c:25 stack_trace_save+0x9c/0xe0 kernel/stacktrace.c:122 kasan_save_stack mm/kasan/common.c:56 [inline] kasan_save_track+0x3e/0x80 mm/kasan/common.c:77 poison_kmalloc_redzone mm/kasan/common.c:400 [inline] __kasan_kmalloc+0x93/0xb0 mm/kasan/common.c:417 kasan_kmalloc include/linux/kasan.h:262 [inline] __kmalloc_cache_noprof+0x3d5/0x6f0 mm/slub.c:5763 kmalloc_noprof include/linux/slab.h:957 [inline] slab_free_hook mm/slub.c:2491 [inline] slab_free mm/slub.c:6630 [inline] kmem_cache_free+0x16f/0x690 mm/slub.c:6740 anon_vma_free mm/rmap.c:136 [inline] __put_anon_vma+0x12b/0x2d0 mm/rmap.c:2777 put_anon_vma include/linux/rmap.h:117 [inline] unlink_anon_vmas+0x503/0x670 mm/rmap.c:443 free_pgtables+0x72b/0x9c0 mm/memory.c:413 exit_mmap+0x43c/0xb40 mm/mmap.c:1291 __mmput+0x118/0x430 kernel/fork.c:1133 exit_mm+0x1da/0x2c0 kernel/exit.c:582 do_exit+0x648/0x2300 kernel/exit.c:954 do_group_exit+0x21c/0x2d0 kernel/exit.c:1107 get_signal+0x1285/0x1340 kernel/signal.c:3034 arch_do_signal_or_restart+0xa0/0x790 arch/x86/kernel/signal.c:337 exit_to_user_mode_loop+0x72/0x130 kernel/entry/common.c:40 exit_to_user_mode_prepare include/linux/irq-entry-common.h:225 [inline] syscall_exit_to_user_mode_work include/linux/entry-common.h:175 [inline] syscall_exit_to_user_mode include/linux/entry-common.h:210 [inline] do_syscall_64+0x2bd/0xfa0 arch/x86/entry/syscall_64.c:100 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fec8ed8f6c9 RSP: 002b:00007fec8fb62038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: 0000000000000000 RBX: 00007fec8efe5fa0 RCX: 00007fec8ed8f6c9 RDX: 0000200000000280 RSI: 00000000c01c64a3 RDI: 0000000000000003 RBP: 00007fec8ee11f91 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fec8efe6038 R14: 00007fec8efe5fa0 R15: 00007ffff1b7b778 net_ratelimit: 15554 callbacks suppressed bridge0: received packet on veth0_to_bridge with own address as source address (addr:5a:a0:7b:d0:62:43, 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:5a:a0:7b:d0:62:43, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:5a:a0:7b:d0:62:43, vlan:0) bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:1b, vlan:0) net_ratelimit: 16872 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:5a:a0:7b:d0:62:43, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:5a:a0:7b:d0:62:43, 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:5a:a0:7b:d0:62:43, vlan:0)