bridge_slave_0: left promiscuous mode bridge0: port 1(bridge_slave_0) entered disabled state Oops: general protection fault, probably for non-canonical address 0xdffffc0000000012: 0000 [#1] SMP KASAN PTI KASAN: null-ptr-deref in range [0x0000000000000090-0x0000000000000097] CPU: 1 UID: 0 PID: 10977 Comm: kworker/u8:19 Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 Workqueue: netns cleanup_net RIP: 0010:__fib6_drop_pcpu_from+0x1f0/0x3b0 net/ipv6/ip6_fib.c:1004 Code: 48 c1 e8 03 42 80 3c 30 00 74 08 4c 89 ef e8 a7 9f d1 f7 49 8b 6d 00 48 85 ed 74 2f 48 81 c5 90 00 00 00 48 89 e8 48 c1 e8 03 <42> 80 3c 30 00 74 08 48 89 ef e8 81 9f d1 f7 48 8b 45 00 48 3b 44 RSP: 0018:ffffc90003306db0 EFLAGS: 00010206 RAX: 0000000000000012 RBX: ffffffff8e294798 RCX: ffff888077a78000 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 0000000000000091 R08: ffffffff8a5ed6e6 R09: ffffffff8e95cce0 R10: dffffc0000000000 R11: fffffbfff206673f R12: 0000000000000001 R13: ffffe8ffffd2b4a0 R14: dffffc0000000000 R15: ffff8880369c6d20 FS: 0000000000000000(0000) GS:ffff888125325000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ff02796ba10 CR3: 0000000076130000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000200000000300 DR2: 0000200000000300 DR3: 0000200000000300 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: fib6_drop_pcpu_from net/ipv6/ip6_fib.c:1038 [inline] fib6_purge_rt+0x10b/0x910 net/ipv6/ip6_fib.c:1049 fib6_del_route net/ipv6/ip6_fib.c:2050 [inline] fib6_del+0xeb5/0x15a0 net/ipv6/ip6_fib.c:2095 fib6_clean_node+0x29c/0x580 net/ipv6/ip6_fib.c:2257 fib6_walk_continue+0x67b/0x910 net/ipv6/ip6_fib.c:2179 fib6_walk net/ipv6/ip6_fib.c:2227 [inline] fib6_clean_tree net/ipv6/ip6_fib.c:2307 [inline] __fib6_clean_all+0x35b/0x5a0 net/ipv6/ip6_fib.c:2323 rt6_sync_down_dev net/ipv6/route.c:5018 [inline] rt6_disable_ip+0x128/0x730 net/ipv6/route.c:5023 addrconf_ifdown+0x161/0x1a40 net/ipv6/addrconf.c:3865 addrconf_notify+0x1bc/0x1050 net/ipv6/addrconf.c:-1 notifier_call_chain+0x1ad/0x3d0 kernel/notifier.c:85 call_netdevice_notifiers_extack net/core/dev.c:2287 [inline] call_netdevice_notifiers net/core/dev.c:2301 [inline] netif_close_many+0x2ae/0x420 net/core/dev.c:1805 unregister_netdevice_many_notify+0xb50/0x22c0 net/core/dev.c:12434 ops_exit_rtnl_list net/core/net_namespace.c:187 [inline] ops_undo_list+0x3d3/0x940 net/core/net_namespace.c:248 cleanup_net+0x56b/0x800 net/core/net_namespace.c:702 process_one_work kernel/workqueue.c:3302 [inline] process_scheduled_works+0xb5d/0x1860 kernel/workqueue.c:3385 worker_thread+0xa53/0xfc0 kernel/workqueue.c:3466 kthread+0x388/0x470 kernel/kthread.c:436 ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:__fib6_drop_pcpu_from+0x1f0/0x3b0 net/ipv6/ip6_fib.c:1004 Code: 48 c1 e8 03 42 80 3c 30 00 74 08 4c 89 ef e8 a7 9f d1 f7 49 8b 6d 00 48 85 ed 74 2f 48 81 c5 90 00 00 00 48 89 e8 48 c1 e8 03 <42> 80 3c 30 00 74 08 48 89 ef e8 81 9f d1 f7 48 8b 45 00 48 3b 44 RSP: 0018:ffffc90003306db0 EFLAGS: 00010206 RAX: 0000000000000012 RBX: ffffffff8e294798 RCX: ffff888077a78000 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 0000000000000091 R08: ffffffff8a5ed6e6 R09: ffffffff8e95cce0 R10: dffffc0000000000 R11: fffffbfff206673f R12: 0000000000000001 R13: ffffe8ffffd2b4a0 R14: dffffc0000000000 R15: ffff8880369c6d20 FS: 0000000000000000(0000) GS:ffff888125325000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ff02796ba10 CR3: 0000000076130000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000200000000300 DR2: 0000200000000300 DR3: 0000200000000300 DR6: 00000000ffff0ff0 DR7: 0000000000000600 ---------------- Code disassembly (best guess): 0: 48 c1 e8 03 shr $0x3,%rax 4: 42 80 3c 30 00 cmpb $0x0,(%rax,%r14,1) 9: 74 08 je 0x13 b: 4c 89 ef mov %r13,%rdi e: e8 a7 9f d1 f7 call 0xf7d19fba 13: 49 8b 6d 00 mov 0x0(%r13),%rbp 17: 48 85 ed test %rbp,%rbp 1a: 74 2f je 0x4b 1c: 48 81 c5 90 00 00 00 add $0x90,%rbp 23: 48 89 e8 mov %rbp,%rax 26: 48 c1 e8 03 shr $0x3,%rax * 2a: 42 80 3c 30 00 cmpb $0x0,(%rax,%r14,1) <-- trapping instruction 2f: 74 08 je 0x39 31: 48 89 ef mov %rbp,%rdi 34: e8 81 9f d1 f7 call 0xf7d19fba 39: 48 8b 45 00 mov 0x0(%rbp),%rax 3d: 48 rex.W 3e: 3b .byte 0x3b 3f: 44 rex.R