syzbot


WARNING in rtnl_dellink (4)

Status: upstream: reported on 2024/10/26 15:16
Subsystems: net
[Documentation on labels]
Reported-by: syzbot+e1153ace01ff073581b7@syzkaller.appspotmail.com
First crash: 29d, last: 16d
Discussions (1)
Title Replies (including bot) Last reply
[syzbot] [net?] WARNING in rtnl_dellink (4) 0 (1) 2024/10/26 15:16
Similar bugs (6)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-4.19 WARNING in rtnl_dellink C error 2 783d 1556d 0/1 upstream: reported C repro on 2020/08/17 07:56
linux-6.1 WARNING in rtnl_dellink 1 610d 610d 0/3 auto-obsoleted due to no activity on 2023/07/20 02:27
upstream WARNING in rtnl_dellink (3) net C done 492 457d 467d 23/28 fixed on 2023/10/12 12:48
linux-4.14 WARNING in rtnl_dellink C error 1 1527d 1557d 0/1 upstream: reported C repro on 2020/08/17 04:45
upstream WARNING in rtnl_dellink net C done done 94 1043d 1554d 20/28 fixed on 2022/05/13 11:13
upstream WARNING in rtnl_dellink (2) net 78 616d 733d 0/28 auto-obsoleted due to no activity on 2023/07/14 02:21

Sample crash report:
bond0 (unregistering): Error: No native XDP support for the current bonding mode
------------[ cut here ]------------
WARNING: CPU: 0 PID: 7166 at net/core/dev.c:9530 dev_xdp_uninstall net/core/dev.c:9530 [inline]
WARNING: CPU: 0 PID: 7166 at net/core/dev.c:9530 unregister_netdevice_many_notify+0x18c8/0x1da0 net/core/dev.c:11472
Modules linked in:
CPU: 0 UID: 0 PID: 7166 Comm: syz.0.15673 Not tainted 6.12.0-rc5-syzkaller-01129-g8d1807a95c7d #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
RIP: 0010:dev_xdp_uninstall net/core/dev.c:9530 [inline]
RIP: 0010:unregister_netdevice_many_notify+0x18c8/0x1da0 net/core/dev.c:11472
Code: fe f7 90 0f 0b 90 e9 4f ff ff ff e8 52 cb fe f7 90 0f 0b 90 eb 9d e8 47 cb fe f7 90 0f 0b 90 e9 e8 f1 ff ff e8 39 cb fe f7 90 <0f> 0b 90 e9 5a f3 ff ff e8 2b cb fe f7 90 0f 0b 90 e9 cd f4 ff ff
RSP: 0018:ffffc9001894efc0 EFLAGS: 00010283
RAX: ffffffff89960ee7 RBX: 00000000ffffffa1 RCX: 0000000000040000
RDX: ffffc9000b6b2000 RSI: 0000000000003678 RDI: 0000000000003679
RBP: ffffc9001894f1b0 R08: ffffffff8996023d R09: fffffbfff1cf9fd0
R10: dffffc0000000000 R11: fffffbfff1cf9fd0 R12: ffffc90017e79000
R13: 1ffff1100c18d985 R14: ffff888060c6cc28 R15: ffff888060c6cc20
FS:  00007fbe0554c6c0(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffd5c997e18 CR3: 0000000054142000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 rtnl_delete_link net/core/rtnetlink.c:3403 [inline]
 rtnl_dellink+0x51d/0x8c0 net/core/rtnetlink.c:3443
 rtnetlink_rcv_msg+0x73f/0xcf0 net/core/rtnetlink.c:6799
 netlink_rcv_skb+0x1e3/0x430 net/netlink/af_netlink.c:2551
 netlink_unicast_kernel net/netlink/af_netlink.c:1331 [inline]
 netlink_unicast+0x7f6/0x990 net/netlink/af_netlink.c:1357
 netlink_sendmsg+0x8e4/0xcb0 net/netlink/af_netlink.c:1901
 sock_sendmsg_nosec net/socket.c:729 [inline]
 __sock_sendmsg+0x221/0x270 net/socket.c:744
 ____sys_sendmsg+0x52a/0x7e0 net/socket.c:2609
 ___sys_sendmsg net/socket.c:2663 [inline]
 __sys_sendmsg+0x292/0x380 net/socket.c:2692
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fbe0477e719
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:00007fbe0554c038 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007fbe04935f80 RCX: 00007fbe0477e719
RDX: 0000000020004010 RSI: 0000000020000000 RDI: 0000000000000004
RBP: 00007fbe047f132e R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007fbe04935f80 R15: 00007ffc19ee90e8
 </TASK>

Crashes (3):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2024/11/04 07:00 net-next 8d1807a95c7d f00eed24 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce WARNING in rtnl_dellink
2024/11/04 03:03 net-next f07a6e6ceb05 f00eed24 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce WARNING in rtnl_dellink
2024/10/22 15:07 net-next 6d858708d465 9d74f456 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce WARNING in rtnl_dellink
* Struck through repros no longer work on HEAD.