syzbot


WARNING in rtnl_dellink

Status: auto-obsoleted due to no activity on 2023/07/20 02:27
Reported-by: syzbot+aab710bf9cfcdb0236f4@syzkaller.appspotmail.com
First crash: 435d, last: 435d
Similar bugs (5)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-4.19 WARNING in rtnl_dellink C error 2 609d 1382d 0/1 upstream: reported C repro on 2020/08/17 07:56
upstream WARNING in rtnl_dellink (3) net C done 492 283d 293d 23/26 fixed on 2023/10/12 12:48
linux-4.14 WARNING in rtnl_dellink C error 1 1352d 1382d 0/1 upstream: reported C repro on 2020/08/17 04:45
upstream WARNING in rtnl_dellink net C done done 94 868d 1380d 20/26 fixed on 2022/05/13 11:13
upstream WARNING in rtnl_dellink (2) net 78 441d 559d 0/26 auto-obsoleted due to no activity on 2023/07/14 02:21

Sample crash report:
bond0 (unregistering): (slave bond_slave_1): Releasing backup interface
bond0 (unregistering): Released all slaves
------------[ cut here ]------------
WARNING: CPU: 1 PID: 19020 at net/core/dev.c:10865 unregister_netdevice_many+0x13df/0x1870
Modules linked in:
CPU: 1 PID: 19020 Comm: syz-executor.2 Not tainted 6.1.20-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023
RIP: 0010:unregister_netdevice_many+0x13df/0x1870 net/core/dev.c:10865
Code: 7c 24 10 0f 84 ed 00 00 00 48 89 fb e8 ea 58 08 f9 48 89 d9 e9 ba f6 ff ff e8 dd 58 08 f9 0f 0b e9 4e ff ff ff e8 d1 58 08 f9 <0f> 0b eb 9e e8 c8 58 08 f9 c6 05 95 f8 bc 05 01 48 c7 c7 60 39 e0
RSP: 0018:ffffc90003b2ef40 EFLAGS: 00010287
RAX: ffffffff8882084f RBX: ffff88807e9200b0 RCX: 0000000000040000
RDX: ffffc9000af01000 RSI: 0000000000022d83 RDI: 0000000000022d84
RBP: ffffc90003b2f0b0 R08: ffffffff888207a8 R09: fffffbfff1c12075
R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000
R13: 1ffff1100fd24181 R14: ffff88807e920000 R15: ffff888020ade780
FS:  00007f9bb3133700(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f71e79ad988 CR3: 0000000077eed000 CR4: 00000000003526e0
Call Trace:
 <TASK>
 rtnl_delete_link net/core/rtnetlink.c:3123 [inline]
 rtnl_dellink+0x4e1/0x880 net/core/rtnetlink.c:3174
 rtnetlink_rcv_msg+0x776/0xf00 net/core/rtnetlink.c:6091
 netlink_rcv_skb+0x1cd/0x410 net/netlink/af_netlink.c:2550
 netlink_unicast_kernel net/netlink/af_netlink.c:1328 [inline]
 netlink_unicast+0x7bf/0x990 net/netlink/af_netlink.c:1354
 netlink_sendmsg+0xa26/0xd60 net/netlink/af_netlink.c:1931
 sock_sendmsg_nosec net/socket.c:716 [inline]
 sock_sendmsg net/socket.c:736 [inline]
 ____sys_sendmsg+0x59e/0x8f0 net/socket.c:2482
 ___sys_sendmsg net/socket.c:2536 [inline]
 __sys_sendmsg+0x2a9/0x390 net/socket.c:2565
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f9bb248c0f9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 19 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 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f9bb3133168 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f9bb25abf80 RCX: 00007f9bb248c0f9
RDX: 0000000000000000 RSI: 00000000200000c0 RDI: 0000000000000003
RBP: 00007f9bb24e7b39 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffd4ed5889f R14: 00007f9bb3133300 R15: 0000000000022000
 </TASK>

Crashes (1):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2023/03/22 02:26 linux-6.1.y 7eaef76fbc46 8b4eb097 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in rtnl_dellink
* Struck through repros no longer work on HEAD.