veth0: entered promiscuous mode veth0 (unregistering): left promiscuous mode Oops: general protection fault, probably for non-canonical address 0xdffffc001fffe000: 0000 [#1] SMP KASAN PTI KASAN: probably user-memory-access in range [0x00000000ffff0000-0x00000000ffff0007] CPU: 1 UID: 0 PID: 17509 Comm: syz.3.3422 Not tainted 6.16.0-rc2-syzkaller-00164-g95b6759a8183 #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 RIP: 0010:ip6_mc_clear_src+0x119/0x4e0 net/ipv6/mcast.c:2599 Code: ff ff ff e8 09 ef 41 01 89 c5 31 ff 89 c6 e8 2e e4 9b f7 85 ed 74 45 e8 e5 df 9b f7 eb 05 e8 de df 9b f7 4c 89 e0 48 c1 e8 03 <42> 80 3c 28 00 74 08 4c 89 e7 e8 e8 5d ff f7 49 8b 2c 24 49 8d 7c RSP: 0018:ffffc9000c52eca0 EFLAGS: 00010206 RAX: 000000001fffe000 RBX: 1ffff1100b6e1182 RCX: ffff8880602cbc00 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000 RBP: 0000000000000001 R08: ffffffff8fa110f7 R09: 1ffffffff1f4221e R10: dffffc0000000000 R11: fffffbfff1f4221f R12: 00000000ffff0000 R13: dffffc0000000000 R14: 0000000000000538 R15: ffff88805b708c10 FS: 00007ff0ac58b6c0(0000) GS:ffff888125d51000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f0033daee80 CR3: 000000007d2d0000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: mld_clear_delrec+0x105/0x5d0 net/ipv6/mcast.c:826 ipv6_mc_destroy_dev+0x45/0x5a0 net/ipv6/mcast.c:2842 addrconf_ifdown+0x139e/0x1880 net/ipv6/addrconf.c:4000 addrconf_notify+0x1bc/0x1010 net/ipv6/addrconf.c:-1 notifier_call_chain+0x1b3/0x3e0 kernel/notifier.c:85 call_netdevice_notifiers_extack net/core/dev.c:2268 [inline] call_netdevice_notifiers net/core/dev.c:2282 [inline] unregister_netdevice_many_notify+0x15d8/0x2320 net/core/dev.c:12077 rtnl_delete_link net/core/rtnetlink.c:3511 [inline] rtnl_dellink+0x488/0x710 net/core/rtnetlink.c:3553 rtnetlink_rcv_msg+0x7cf/0xb70 net/core/rtnetlink.c:6944 netlink_rcv_skb+0x205/0x470 net/netlink/af_netlink.c:2534 netlink_unicast_kernel net/netlink/af_netlink.c:1313 [inline] netlink_unicast+0x758/0x8d0 net/netlink/af_netlink.c:1339 netlink_sendmsg+0x805/0xb30 net/netlink/af_netlink.c:1883 sock_sendmsg_nosec net/socket.c:712 [inline] __sock_sendmsg+0x219/0x270 net/socket.c:727 ____sys_sendmsg+0x505/0x830 net/socket.c:2566 ___sys_sendmsg+0x21f/0x2a0 net/socket.c:2620 __sys_sendmsg net/socket.c:2652 [inline] __do_sys_sendmsg net/socket.c:2657 [inline] __se_sys_sendmsg net/socket.c:2655 [inline] __x64_sys_sendmsg+0x19b/0x260 net/socket.c:2655 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: 0033:0x7ff0ab78e929 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ff0ac58b038 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007ff0ab9b5fa0 RCX: 00007ff0ab78e929 RDX: 0000000020048054 RSI: 0000200000000200 RDI: 0000000000000005 RBP: 00007ff0ab810b39 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007ff0ab9b5fa0 R15: 00007ffd5cf597d8 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:ip6_mc_clear_src+0x119/0x4e0 net/ipv6/mcast.c:2599 Code: ff ff ff e8 09 ef 41 01 89 c5 31 ff 89 c6 e8 2e e4 9b f7 85 ed 74 45 e8 e5 df 9b f7 eb 05 e8 de df 9b f7 4c 89 e0 48 c1 e8 03 <42> 80 3c 28 00 74 08 4c 89 e7 e8 e8 5d ff f7 49 8b 2c 24 49 8d 7c RSP: 0018:ffffc9000c52eca0 EFLAGS: 00010206 RAX: 000000001fffe000 RBX: 1ffff1100b6e1182 RCX: ffff8880602cbc00 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000 RBP: 0000000000000001 R08: ffffffff8fa110f7 R09: 1ffffffff1f4221e R10: dffffc0000000000 R11: fffffbfff1f4221f R12: 00000000ffff0000 R13: dffffc0000000000 R14: 0000000000000538 R15: ffff88805b708c10 FS: 00007ff0ac58b6c0(0000) GS:ffff888125c51000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f00319f6d58 CR3: 000000007d2d0000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess), 3 bytes skipped: 0: e8 09 ef 41 01 call 0x141ef0e 5: 89 c5 mov %eax,%ebp 7: 31 ff xor %edi,%edi 9: 89 c6 mov %eax,%esi b: e8 2e e4 9b f7 call 0xf79be43e 10: 85 ed test %ebp,%ebp 12: 74 45 je 0x59 14: e8 e5 df 9b f7 call 0xf79bdffe 19: eb 05 jmp 0x20 1b: e8 de df 9b f7 call 0xf79bdffe 20: 4c 89 e0 mov %r12,%rax 23: 48 c1 e8 03 shr $0x3,%rax * 27: 42 80 3c 28 00 cmpb $0x0,(%rax,%r13,1) <-- trapping instruction 2c: 74 08 je 0x36 2e: 4c 89 e7 mov %r12,%rdi 31: e8 e8 5d ff f7 call 0xf7ff5e1e 36: 49 8b 2c 24 mov (%r12),%rbp 3a: 49 rex.WB 3b: 8d .byte 0x8d 3c: 7c .byte 0x7c