bridge0: received packet on bridge_slave_0 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): P10334/1:b..l rcu: (detected by 1, t=10503 jiffies, g=27697, q=1333 ncpus=2) task:syz.0.1230 state:R running task stack:28328 pid:10334 tgid:10333 ppid:5865 task_flags:0x400040 flags:0x00004002 Call Trace: context_switch kernel/sched/core.c:5357 [inline] __schedule+0x1798/0x4cc0 kernel/sched/core.c:6961 preempt_schedule_irq+0xb5/0x150 kernel/sched/core.c:7288 irqentry_exit+0x6f/0x90 kernel/entry/common.c:197 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 RIP: 0010:rcu_lock_acquire include/linux/rcupdate.h:331 [inline] RIP: 0010:rcu_read_lock include/linux/rcupdate.h:841 [inline] RIP: 0010:page_ext_get+0x3e/0x2f0 mm/page_ext.c:527 Code: 91 ff e8 b5 e3 78 ff 48 8d 1d 00 00 00 00 48 c7 c7 e0 9e 13 8e 31 f6 31 d2 b9 02 00 00 00 45 31 c0 45 31 c9 53 e8 52 28 6f ff <48> 83 c4 08 e8 69 8c 4a 09 89 c5 31 ff 89 c6 e8 6e 7d 91 ff 85 ed RSP: 0018:ffffc9001c54f808 EFLAGS: 00000282 RAX: 7fd632b9e23f0800 RBX: ffffffff822e3252 RCX: 7fd632b9e23f0800 RDX: 0000000000000000 RSI: ffffffff8dba39af RDI: ffffffff8be32680 RBP: 0000000000000000 R08: 0000000000000000 R09: ffffffff822e3252 R10: dffffc0000000000 R11: fffff940002d7d37 R12: 0000000000000000 R13: 0000000000000000 R14: ffffea00016be980 R15: 0000003fda9bc12e __reset_page_owner+0x28/0x1f0 mm/page_owner.c:294 reset_page_owner include/linux/page_owner.h:25 [inline] free_pages_prepare mm/page_alloc.c:1395 [inline] __free_frozen_pages+0xbc4/0xd30 mm/page_alloc.c:2895 discard_slab mm/slub.c:2753 [inline] __put_partials+0x156/0x1a0 mm/slub.c:3218 put_cpu_partial+0x17c/0x250 mm/slub.c:3293 __slab_free+0x2d5/0x3c0 mm/slub.c:4550 qlink_free mm/kasan/quarantine.c:163 [inline] qlist_free_all+0x97/0x140 mm/kasan/quarantine.c:179 kasan_quarantine_reduce+0x148/0x160 mm/kasan/quarantine.c:286 __kasan_slab_alloc+0x22/0x80 mm/kasan/common.c:340 kasan_slab_alloc include/linux/kasan.h:250 [inline] slab_post_alloc_hook mm/slub.c:4180 [inline] slab_alloc_node mm/slub.c:4229 [inline] kmem_cache_alloc_node_noprof+0x1bb/0x3c0 mm/slub.c:4281 __alloc_skb+0x112/0x2d0 net/core/skbuff.c:659 netlink_sendmsg+0x5c6/0xb30 net/netlink/af_netlink.c:1871 sock_sendmsg_nosec net/socket.c:714 [inline] __sock_sendmsg+0x219/0x270 net/socket.c:729 __sys_sendto+0x3bd/0x520 net/socket.c:2228 __do_sys_sendto net/socket.c:2235 [inline] __se_sys_sendto net/socket.c:2231 [inline] __x64_sys_sendto+0xde/0x100 net/socket.c:2231 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fa755790a7c RSP: 002b:00007fa7565e0ec0 EFLAGS: 00000293 ORIG_RAX: 000000000000002c RAX: ffffffffffffffda RBX: 00007fa7565e0fc0 RCX: 00007fa755790a7c RDX: 0000000000000020 RSI: 00007fa7565e1010 RDI: 0000000000000005 RBP: 0000000000000000 R08: 00007fa7565e0f14 R09: 000000000000000c R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000005 R13: 00007fa7565e0f68 R14: 00007fa7565e1010 R15: 0000000000000000 bridge0: received packet on veth0_to_bridge with own address as source address (addr:fe:dc:06:92:04:ba, vlan:0) bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:fe:dc:06:92:04:ba, vlan:0) bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0) bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:fe:dc:06:92:04:ba, vlan:0) bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)