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 0xdffffc0000000000: 0000 [#1] PREEMPT SMP KASAN PTI KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007] CPU: 0 UID: 0 PID: 81 Comm: kworker/u8:4 Not tainted 6.13.0-rc2-syzkaller-00192-g243f750a2df0 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/25/2024 Workqueue: netns cleanup_net RIP: 0010:rtnl_prop_list_size+0xce/0x2d0 net/core/rtnetlink.c:1211 Code: eb 10 49 39 dc 0f 84 a7 01 00 00 49 bd 00 00 00 00 00 fc ff df 31 ed e8 d0 a6 94 f8 48 8d 7b 10 83 c5 01 48 89 f8 48 c1 e8 03 <42> 80 3c 28 00 0f 85 cc 01 00 00 48 8b 5b 10 48 83 eb 10 49 39 dc RSP: 0000:ffffc900023cf880 EFLAGS: 00010246 RAX: 0000000000000000 RBX: fffffffffffffff0 RCX: ffffffff890497c7 RDX: ffff88801cb28000 RSI: ffffffff89049720 RDI: 0000000000000000 RBP: 0000000000000001 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000004 R12: ffff888025e32f00 R13: dffffc0000000000 R14: 0000000000000088 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f1c3177db18 CR3: 0000000034624000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: if_nlmsg_size+0x401/0xa70 net/core/rtnetlink.c:1303 rtmsg_ifinfo_build_skb+0x6d/0x280 net/core/rtnetlink.c:4346 rtmsg_ifinfo_event net/core/rtnetlink.c:4388 [inline] rtmsg_ifinfo_event net/core/rtnetlink.c:4378 [inline] rtmsg_ifinfo+0x9f/0x1a0 net/core/rtnetlink.c:4397 dev_close_many+0x318/0x6a0 net/core/dev.c:1588 unregister_netdevice_many_notify+0x489/0x1e60 net/core/dev.c:11500 cleanup_net+0x58c/0xbd0 net/core/net_namespace.c:643 process_one_work+0x958/0x1b30 kernel/workqueue.c:3229 process_scheduled_works kernel/workqueue.c:3310 [inline] worker_thread+0x6c8/0xf00 kernel/workqueue.c:3391 kthread+0x2c1/0x3a0 kernel/kthread.c:389 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:rtnl_prop_list_size+0xce/0x2d0 net/core/rtnetlink.c:1211 Code: eb 10 49 39 dc 0f 84 a7 01 00 00 49 bd 00 00 00 00 00 fc ff df 31 ed e8 d0 a6 94 f8 48 8d 7b 10 83 c5 01 48 89 f8 48 c1 e8 03 <42> 80 3c 28 00 0f 85 cc 01 00 00 48 8b 5b 10 48 83 eb 10 49 39 dc RSP: 0000:ffffc900023cf880 EFLAGS: 00010246 RAX: 0000000000000000 RBX: fffffffffffffff0 RCX: ffffffff890497c7 RDX: ffff88801cb28000 RSI: ffffffff89049720 RDI: 0000000000000000 RBP: 0000000000000001 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000004 R12: ffff888025e32f00 R13: dffffc0000000000 R14: 0000000000000088 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000562cecb31708 CR3: 0000000060f6a000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: eb 10 jmp 0x12 2: 49 39 dc cmp %rbx,%r12 5: 0f 84 a7 01 00 00 je 0x1b2 b: 49 bd 00 00 00 00 00 movabs $0xdffffc0000000000,%r13 12: fc ff df 15: 31 ed xor %ebp,%ebp 17: e8 d0 a6 94 f8 call 0xf894a6ec 1c: 48 8d 7b 10 lea 0x10(%rbx),%rdi 20: 83 c5 01 add $0x1,%ebp 23: 48 89 f8 mov %rdi,%rax 26: 48 c1 e8 03 shr $0x3,%rax * 2a: 42 80 3c 28 00 cmpb $0x0,(%rax,%r13,1) <-- trapping instruction 2f: 0f 85 cc 01 00 00 jne 0x201 35: 48 8b 5b 10 mov 0x10(%rbx),%rbx 39: 48 83 eb 10 sub $0x10,%rbx 3d: 49 39 dc cmp %rbx,%r12