bridge0: received packet on veth0_to_bridge with own address as source address (addr:9e:51:40:63:f4:36, vlan:0) rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P16615/1:b..l rcu: (detected by 0, t=10504 jiffies, g=61125, q=544 ncpus=2) task:syz.4.3038 state:R running task stack:25672 pid:16615 tgid:16613 ppid:5835 task_flags:0x40054c flags:0x00080000 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:702 RIP: 0010:orc_find arch/x86/kernel/unwind_orc.c:220 [inline] RIP: 0010:unwind_next_frame+0x276/0x2390 arch/x86/kernel/unwind_orc.c:494 Code: 04 6d 00 00 00 00 4c 01 e8 48 8d 34 45 94 76 23 90 48 81 fe d6 46 d7 90 0f 83 24 18 00 00 4b 8d 04 40 48 8d 04 45 94 76 23 90 <48> 3d d6 46 d7 90 0f 87 0c 18 00 00 45 39 e8 48 bd 00 00 00 00 00 RSP: 0018:ffffc90003c5f2b8 EFLAGS: 00000297 RAX: ffffffff902cfaa6 RBX: dffffc0000000000 RCX: 36f6d82826bd6100 RDX: 00000000000a4f06 RSI: ffffffff902cfaa0 RDI: ffffffff8bc07480 RBP: ffffffff90d95560 R08: 0000000000019603 R09: ffffffff81731d25 R10: ffffc90003c5f3d8 R11: ffffffff81abbce0 R12: ffffffff8183a1c7 R13: 0000000000019602 R14: ffffc90003c5f388 R15: 00000000000083a1 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:5725 kmalloc_noprof include/linux/slab.h:957 [inline] slab_free_hook mm/slub.c:2467 [inline] slab_free mm/slub.c:6574 [inline] kmem_cache_free+0x16f/0x690 mm/slub.c:6684 exit_mmap+0x537/0xb40 mm/mmap.c:1305 __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: 0033:0x7f53ded8eec9 RSP: 002b:00007f53dfb62038 EFLAGS: 00000246 ORIG_RAX: 0000000000000029 RAX: 000000000000001e RBX: 00007f53defe6090 RCX: 00007f53ded8eec9 RDX: 0000000000000000 RSI: 0000000000000003 RDI: 0000000000000010 RBP: 00007f53dee11f91 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f53defe6128 R14: 00007f53defe6090 R15: 00007ffe92415068 bridge0: received packet on veth0_to_bridge with own address as source address (addr:9e:51:40:63:f4:36, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:9e:51:40:63:f4:36, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:9e:51:40:63:f4:36, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:9e:51:40:63:f4:36, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:9e:51:40:63:f4:36, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:9e:51:40:63:f4:36, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:9e:51:40:63:f4:36, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:9e:51:40:63:f4:36, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:9e:51:40:63:f4:36, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:9e:51:40:63:f4:36, vlan:0)