syzbot


WARNING in rtnl_dellink (2)

Status: upstream: reported on 2022/11/18 11:17
Reported-by: syzbot+d8c77f7232bfdb254e37@syzkaller.appspotmail.com
First crash: 196d, last: 2d22h
similar bugs (3):
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-4.19 WARNING in rtnl_dellink C error 2 60d 834d 0/1 upstream: reported C repro on 2020/08/17 07:56
linux-4.14 WARNING in rtnl_dellink C error 1 804d 834d 0/1 upstream: reported C repro on 2020/08/17 04:45
upstream WARNING in rtnl_dellink C done done 94 320d 831d 22/24 fixed on 2022/05/13 11:13

Sample crash report:
bond0 (unregistering): (slave bond3): Releasing backup interface
bond0 (unregistering): Released all slaves
------------[ cut here ]------------
WARNING: CPU: 1 PID: 20974 at net/core/dev.c:10871 unregister_netdevice_many+0x13ba/0x1930 net/core/dev.c:10871
Modules linked in:
CPU: 0 PID: 20974 Comm: syz-executor.1 Not tainted 6.1.0-rc1-syzkaller-00454-ga70385240892 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/11/2022
RIP: 0010:unregister_netdevice_many+0x13ba/0x1930 net/core/dev.c:10871
Code: 0b e9 27 f1 ff ff e8 75 08 24 fa be 04 00 00 00 4c 89 f7 e8 28 96 ab fc e9 42 fb ff ff 48 89 dd e9 1c f9 ff ff e8 56 08 24 fa <0f> 0b e9 f0 f9 ff ff e8 4a 08 24 fa 0f b6 1d dc e5 73 06 31 ff 89
RSP: 0018:ffffc9000b4ff268 EFLAGS: 00010246
RAX: 0000000000040000 RBX: ffff88807627c0b0 RCX: ffffc90004743000
RDX: 0000000000040000 RSI: ffffffff8758834a RDI: 0000000000000005
RBP: ffff88801ecf8080 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000001 R11: 000000000008c07e R12: 0000000000000000
R13: ffff88801ecf8080 R14: ffff88807627c000 R15: dffffc0000000000
FS:  00007f42ed863700(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f220e57f1b8 CR3: 0000000036be9000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 000000000b002800
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 rtnl_delete_link net/core/rtnetlink.c:3123 [inline]
 rtnl_dellink+0x354/0xa90 net/core/rtnetlink.c:3174
 rtnetlink_rcv_msg+0x43a/0xca0 net/core/rtnetlink.c:6091
 netlink_rcv_skb+0x153/0x420 net/netlink/af_netlink.c:2540
 netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline]
 netlink_unicast+0x543/0x7f0 net/netlink/af_netlink.c:1345
 netlink_sendmsg+0x917/0xe10 net/netlink/af_netlink.c:1921
 sock_sendmsg_nosec net/socket.c:714 [inline]
 sock_sendmsg+0xcf/0x120 net/socket.c:734
 ____sys_sendmsg+0x712/0x8c0 net/socket.c:2482
 ___sys_sendmsg+0x110/0x1b0 net/socket.c:2536
 __sys_sendmsg+0xf3/0x1c0 net/socket.c:2565
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f42ec68b5f9
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 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f42ed863168 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f42ec7abf80 RCX: 00007f42ec68b5f9
RDX: 0000000000000000 RSI: 0000000020000140 RDI: 0000000000000003
RBP: 00007f42ec6e67b0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f42eccdfb1f R14: 00007f42ed863300 R15: 0000000000022000
 </TASK>

Crashes (32):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci-upstream-kasan-gce 2022/10/24 12:37 upstream a70385240892 23bf86af .config log report info WARNING in rtnl_dellink
ci-upstream-kasan-gce-smack-root 2022/10/23 16:00 upstream d47136c28015 23bf86af .config log report info WARNING in rtnl_dellink
ci-upstream-kasan-gce 2022/10/22 18:35 upstream 4da34b7d175d c0b80a55 .config log report info WARNING in rtnl_dellink
ci-upstream-kasan-gce 2022/10/14 02:36 upstream 55be6084c8e0 adf90437 .config log report info WARNING in rtnl_dellink
ci-qemu-upstream 2022/10/09 01:19 upstream a6afa4199d3d aea5da89 .config log report info WARNING in rtnl_dellink
ci-upstream-kasan-gce 2022/10/02 12:12 upstream b357fd1c2afc feb56351 .config log report info WARNING in rtnl_dellink
ci-qemu-upstream 2022/10/01 04:11 upstream ffb4d94b4314 feb56351 .config log report info WARNING in rtnl_dellink
ci-upstream-kasan-gce-root 2022/05/20 16:37 upstream 3d7285a335ed bd37ad7e .config log report info WARNING in rtnl_dellink
ci-upstream-kasan-gce-root 2022/05/16 12:42 upstream 42226c989789 744a39e2 .config log report info WARNING in rtnl_dellink
ci-qemu-upstream-386 2022/11/25 05:41 upstream 08ad43d554ba 74a66371 .config log report info WARNING in rtnl_dellink
ci-upstream-kasan-gce-386 2022/11/02 17:23 upstream b229b6ca5abb 08977f5d .config log report info WARNING in rtnl_dellink
ci-upstream-kasan-gce-386 2022/10/27 01:18 upstream 98555239e4c3 86777b7f .config log report info WARNING in rtnl_dellink
ci-qemu-upstream-386 2022/10/26 20:19 upstream 98555239e4c3 86777b7f .config log report info WARNING in rtnl_dellink
ci-upstream-kasan-gce-386 2022/10/16 12:54 upstream 55be6084c8e0 67cb024c .config log report info WARNING in rtnl_dellink
ci-upstream-kasan-gce-386 2022/10/13 12:24 upstream 55be6084c8e0 adf90437 .config log report info WARNING in rtnl_dellink
ci-upstream-kasan-gce-386 2022/05/29 23:23 upstream b00ed48bb0a7 a46af346 .config log report info WARNING in rtnl_dellink
ci-upstream-kasan-gce-386 2022/05/19 10:19 upstream f993aed406ea 50c53f39 .config log report info WARNING in rtnl_dellink
ci-upstream-net-this-kasan-gce 2022/11/21 14:19 net 9ab000d9ac54 5bb70014 .config log report info WARNING in rtnl_dellink
ci-upstream-net-this-kasan-gce 2022/11/12 19:21 net 9cbd48d5fa14 3ead01ad .config log report info WARNING in rtnl_dellink
ci-upstream-net-this-kasan-gce 2022/10/26 12:55 net 95a0396a0642 2159e4d2 .config log report info WARNING in rtnl_dellink
ci-upstream-net-this-kasan-gce 2022/07/12 16:56 net f946964a9f79 d91dd8ea .config log report info WARNING in rtnl_dellink
ci-upstream-net-this-kasan-gce 2022/07/02 16:24 net d28b25a62a47 1434eec0 .config log report info WARNING in rtnl_dellink
ci-upstream-net-this-kasan-gce 2022/06/28 12:31 net 3b0dc529f56b ef82eb2c .config log report info WARNING in rtnl_dellink
ci-upstream-net-this-kasan-gce 2022/06/12 18:52 net 6f0e1efc880a 0d5abf15 .config log report info WARNING in rtnl_dellink
ci-upstream-net-this-kasan-gce 2022/06/06 18:46 net c76acfb7e19d c8857892 .config log report info WARNING in rtnl_dellink
ci-upstream-net-kasan-gce 2022/10/27 23:57 net-next 99c8eb46773e 86777b7f .config log report info WARNING in rtnl_dellink
ci-upstream-net-kasan-gce 2022/10/08 07:15 net-next 0326074ff465 0de35f24 .config log report info WARNING in rtnl_dellink
ci-upstream-net-kasan-gce 2022/09/27 18:19 net-next 6627a2074d5c 87840e00 .config log report info WARNING in rtnl_dellink
ci-upstream-net-kasan-gce 2022/09/17 22:33 net-next 44a8535fb87c dd9a85ff .config log report info WARNING in rtnl_dellink
ci-upstream-gce-arm64 2022/11/26 11:40 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 6d464646530f 74a66371 .config log report info WARNING in rtnl_dellink
ci-upstream-gce-arm64 2022/10/06 11:44 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci bbed346d5a96 131b38ac .config log report info WARNING in rtnl_dellink
ci-upstream-gce-arm64 2022/09/14 13:45 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci a6b443748715 b884348d .config log report info WARNING in rtnl_dellink
* Struck through repros no longer work on HEAD.