bridge0: port 4(veth0) entered disabled state bridge_slave_0: left allmulticast mode bridge_slave_0: left promiscuous mode bridge0: port 1(bridge_slave_0) entered disabled state Oops: general protection fault, probably for non-canonical address 0xfbd59c0000000024: 0000 [#1] SMP KASAN PTI KASAN: maybe wild-memory-access in range [0xdead000000000120-0xdead000000000127] CPU: 0 UID: 0 PID: 16529 Comm: syz.3.3007 Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 RIP: 0010:__hlist_del include/linux/list.h:1029 [inline] RIP: 0010:hlist_del_rcu include/linux/rculist.h:599 [inline] RIP: 0010:br_del_frame+0xd1/0x160 net/bridge/br_input.c:482 Code: f7 4c 8b 73 10 48 83 c3 18 49 89 dd 49 c1 ed 03 43 80 7c 25 00 00 74 08 48 89 df e8 39 80 8e f7 4c 8b 3b 4c 89 f8 48 c1 e8 03 <42> 80 3c 20 00 74 08 4c 89 ff e8 10 81 8e f7 4d 89 37 4d 85 f6 74 RSP: 0018:ffffc900055beab8 EFLAGS: 00010a06 RAX: 1bd5a00000000024 RBX: ffffffff905a57d8 RCX: ffff888077011f40 RDX: 0000000000000000 RSI: ffffffff905a57c0 RDI: ffffffff905a57d0 RBP: 000000000000001c R08: ffffffff822ab6bf R09: 0000000000000000 R10: 0000000000008000 R11: ffff8880b863fca8 R12: dffffc0000000000 R13: 1ffffffff20b4afb R14: 0000000000000000 R15: dead000000000122 FS: 00007f67083246c0(0000) GS:ffff888124f24000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fea950e9ff8 CR3: 000000007f086000 CR4: 00000000003526f0 Call Trace: br_cfm_port_del+0x106/0x1a0 net/bridge/br_cfm.c:872 del_nbp+0x178/0x9f0 net/bridge/br_if.c:348 br_del_if+0x143/0x1e0 net/bridge/br_if.c:732 do_set_master+0x332/0x720 net/core/rtnetlink.c:3055 do_setlink+0xe7b/0x4670 net/core/rtnetlink.c:3273 rtnl_group_changelink net/core/rtnetlink.c:3919 [inline] __rtnl_newlink net/core/rtnetlink.c:4085 [inline] rtnl_newlink+0x146f/0x1c30 net/core/rtnetlink.c:4215 rtnetlink_rcv_msg+0x802/0xc00 net/core/rtnetlink.c:7132 netlink_rcv_skb+0x226/0x4a0 net/netlink/af_netlink.c:2556 netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline] netlink_unicast+0x7bd/0x940 net/netlink/af_netlink.c:1345 netlink_sendmsg+0x813/0xb40 net/netlink/af_netlink.c:1900 sock_sendmsg_nosec+0x13a/0x180 net/socket.c:800 __sock_sendmsg net/socket.c:815 [inline] ____sys_sendmsg+0x54e/0x850 net/socket.c:2713 ___sys_sendmsg+0x2a5/0x360 net/socket.c:2767 __sys_sendmsg net/socket.c:2799 [inline] __do_sys_sendmsg net/socket.c:2804 [inline] __se_sys_sendmsg net/socket.c:2802 [inline] __x64_sys_sendmsg+0x1b1/0x290 net/socket.c:2802 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: 0033:0x7f670739e0d9 Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f6708324028 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007f6707626090 RCX: 00007f670739e0d9 RDX: 0000000000000000 RSI: 0000200000000140 RDI: 000000000000000b RBP: 00007f6707435024 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f6707626128 R14: 00007f6707626090 R15: 00007fff21d01ca8 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:__hlist_del include/linux/list.h:1029 [inline] RIP: 0010:hlist_del_rcu include/linux/rculist.h:599 [inline] RIP: 0010:br_del_frame+0xd1/0x160 net/bridge/br_input.c:482 Code: f7 4c 8b 73 10 48 83 c3 18 49 89 dd 49 c1 ed 03 43 80 7c 25 00 00 74 08 48 89 df e8 39 80 8e f7 4c 8b 3b 4c 89 f8 48 c1 e8 03 <42> 80 3c 20 00 74 08 4c 89 ff e8 10 81 8e f7 4d 89 37 4d 85 f6 74 RSP: 0018:ffffc900055beab8 EFLAGS: 00010a06 RAX: 1bd5a00000000024 RBX: ffffffff905a57d8 RCX: ffff888077011f40 RDX: 0000000000000000 RSI: ffffffff905a57c0 RDI: ffffffff905a57d0 RBP: 000000000000001c R08: ffffffff822ab6bf R09: 0000000000000000 R10: 0000000000008000 R11: ffff8880b863fca8 R12: dffffc0000000000 R13: 1ffffffff20b4afb R14: 0000000000000000 R15: dead000000000122 FS: 00007f67083246c0(0000) GS:ffff888124f24000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fea950e9ff8 CR3: 000000007f086000 CR4: 00000000003526f0 ---------------- Code disassembly (best guess): 0: f7 4c 8b 73 10 48 83 testl $0xc3834810,0x73(%rbx,%rcx,4) 7: c3 8: 18 49 89 sbb %cl,-0x77(%rcx) b: dd 49 c1 fisttpll -0x3f(%rcx) e: ed in (%dx),%eax f: 03 43 80 add -0x80(%rbx),%eax 12: 7c 25 jl 0x39 14: 00 00 add %al,(%rax) 16: 74 08 je 0x20 18: 48 89 df mov %rbx,%rdi 1b: e8 39 80 8e f7 call 0xf78e8059 20: 4c 8b 3b mov (%rbx),%r15 23: 4c 89 f8 mov %r15,%rax 26: 48 c1 e8 03 shr $0x3,%rax * 2a: 42 80 3c 20 00 cmpb $0x0,(%rax,%r12,1) <-- trapping instruction 2f: 74 08 je 0x39 31: 4c 89 ff mov %r15,%rdi 34: e8 10 81 8e f7 call 0xf78e8149 39: 4d 89 37 mov %r14,(%r15) 3c: 4d 85 f6 test %r14,%r14 3f: 74 .byte 0x74