syzbot


WARNING in ip6_route_multipath_add

Status: fixed on 2024/01/30 15:47
Subsystems: net
[Documentation on labels]
Fix commit: a3c205d0560f ipv6: do not check fib6_has_expires() in fib6_info_release()
First crash: 160d, last: 160d

Sample crash report:
------------[ cut here ]------------
WARNING: CPU: 1 PID: 24858 at include/net/ip6_fib.h:332 fib6_info_release include/net/ip6_fib.h:332 [inline]
WARNING: CPU: 1 PID: 24858 at include/net/ip6_fib.h:332 ip6_route_multipath_add+0x22d8/0x2480 net/ipv6/route.c:5299
Modules linked in:
CPU: 1 PID: 24858 Comm: syz-executor.4 Not tainted 6.7.0-rc3-syzkaller-00805-g5a08d0065a91 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/10/2023
RIP: 0010:fib6_info_release include/net/ip6_fib.h:332 [inline]
RIP: 0010:ip6_route_multipath_add+0x22d8/0x2480 net/ipv6/route.c:5299
Code: 89 cf e8 0b 08 a7 f8 e9 46 fe ff ff e8 01 27 50 f8 90 0f 0b 90 e9 81 fe ff ff e8 13 08 a7 f8 e9 6c fe ff ff e8 e9 26 50 f8 90 <0f> 0b 90 e9 3b fe ff ff 48 89 95 38 fe ff ff e8 f4 07 a7 f8 48 8b
RSP: 0018:ffffc90015fc7300 EFLAGS: 00010287
RAX: 00000000000032b4 RBX: 0000000000400000 RCX: ffffc9000c923000
RDX: 0000000000040000 RSI: ffffffff89376b67 RDI: 0000000000000005
RBP: ffffc90015fc7510 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000400000 R11: 0000000000000000 R12: ffff8880890cac2c
R13: 0000000000000000 R14: 00000000ffff0400 R15: ffff8880890cac00
FS:  00007f4fdfd056c0(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b31924000 CR3: 0000000029fbe000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 inet6_rtm_newroute+0xe5/0x170 net/ipv6/route.c:5508
 rtnetlink_rcv_msg+0x3c7/0xe00 net/core/rtnetlink.c:6566
 netlink_rcv_skb+0x16b/0x440 net/netlink/af_netlink.c:2544
 netlink_unicast_kernel net/netlink/af_netlink.c:1341 [inline]
 netlink_unicast+0x53b/0x810 net/netlink/af_netlink.c:1367
 netlink_sendmsg+0x8b7/0xd70 net/netlink/af_netlink.c:1909
 sock_sendmsg_nosec net/socket.c:730 [inline]
 __sock_sendmsg+0xd5/0x180 net/socket.c:745
 ____sys_sendmsg+0x6ac/0x940 net/socket.c:2584
 ___sys_sendmsg+0x135/0x1d0 net/socket.c:2638
 __sys_sendmsg+0x117/0x1e0 net/socket.c:2667
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x40/0x110 arch/x86/entry/common.c:82
 entry_SYSCALL_64_after_hwframe+0x63/0x6b
RIP: 0033:0x7f4fdf07cba9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 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 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f4fdfd050c8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f4fdf19c050 RCX: 00007f4fdf07cba9
RDX: 0000000000000000 RSI: 0000000020000140 RDI: 0000000000000003
RBP: 00007f4fdf0c847a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007f4fdf19c050 R15: 00007ffca4c678c8
 </TASK>

Crashes (1):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2023/12/11 03:50 net-next 5a08d0065a91 28b24332 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce WARNING in ip6_route_multipath_add
* Struck through repros no longer work on HEAD.