syzbot


WARNING in rtnl_dellink (3)

Status: fixed on 2023/10/12 12:48
Subsystems: net
[Documentation on labels]
Reported-by: syzbot+4b4f06495414e92701d5@syzkaller.appspotmail.com
Fix commit: ace0ab3a4b54 Revert "vlan: Fix VLAN 0 memory leak"
First crash: 284d, last: 272d
Cause bisection: introduced by (bisect log) :
commit 718cb09aaa6fa78cc8124e9517efbc6c92665384
Author: Vlad Buslov <vladbu@nvidia.com>
Date: Tue Aug 8 09:35:21 2023 +0000

  vlan: Fix VLAN 0 memory leak

Crash: WARNING in rtnl_dellink (log)
Repro: C syz .config
  
Discussions (2)
Title Replies (including bot) Last reply
[PATCH net] Revert "vlan: Fix VLAN 0 memory leak" 3 (3) 2023/08/14 07:20
[syzbot] [net?] WARNING in rtnl_dellink (3) 0 (1) 2023/08/11 13:57
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 598d 1371d 0/1 upstream: reported C repro on 2020/08/17 07:56
linux-6.1 WARNING in rtnl_dellink 1 425d 425d 0/3 auto-obsoleted due to no activity on 2023/07/20 02:27
linux-4.14 WARNING in rtnl_dellink C error 1 1342d 1372d 0/1 upstream: reported C repro on 2020/08/17 04:45
upstream WARNING in rtnl_dellink net C done done 94 858d 1369d 20/26 fixed on 2022/05/13 11:13
upstream WARNING in rtnl_dellink (2) net 78 431d 548d 0/26 auto-obsoleted due to no activity on 2023/07/14 02:21
Last patch testing requests (6)
Created Duration User Patch Repo Result
2023/08/12 13:24 26m hdanton@sina.com patch https://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next.git 048c796beb6e OK log
2023/08/12 11:43 43m hdanton@sina.com patch https://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next.git 048c796beb6e OK log
2023/08/12 10:35 33m hdanton@sina.com patch https://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next.git 048c796beb6e report log
2023/08/12 09:27 14m hdanton@sina.com patch https://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next.git 048c796beb6e report log
2023/08/12 07:28 52m hdanton@sina.com patch https://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next.git 048c796beb6e report log
2023/08/12 02:20 14m hdanton@sina.com patch https://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next.git 048c796beb6e report log

Sample crash report:
------------[ cut here ]------------
WARNING: CPU: 0 PID: 5074 at net/core/dev.c:10876 unregister_netdevice_many_notify+0x13bc/0x1890
Modules linked in:
CPU: 0 PID: 5074 Comm: syz-executor298 Not tainted 6.5.0-rc6-syzkaller-00036-g4853c74bd7ab #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/26/2023
RIP: 0010:unregister_netdevice_many_notify+0x13bc/0x1890 net/core/dev.c:10876
Code: 7a c7 3a f9 48 8b 4c 24 28 48 8b 09 4c 39 f1 0f 84 18 01 00 00 48 89 cb e8 51 f5 e1 f8 48 89 d9 e9 8f f5 ff ff e8 44 f5 e1 f8 <0f> 0b e9 4b ff ff ff e8 38 f5 e1 f8 0f 0b eb 9b e8 2f f5 e1 f8 c6
RSP: 0018:ffffc90003c1ed80 EFLAGS: 00010293
RAX: ffffffff88a9c2ec RBX: ffff88807b2ca0a0 RCX: ffff8880226a5940
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffffc90003c1ef50 R08: ffffffff88a9c1f1 R09: 1ffffffff1c9769c
R10: dffffc0000000000 R11: fffffbfff1c9769d R12: ffff88807b2ca000
R13: ffff88801833f710 R14: ffffc90003c1efc0 R15: dffffc0000000000
FS:  0000555556163380(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000200012d4 CR3: 000000007278c000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 rtnl_delete_link net/core/rtnetlink.c:3214 [inline]
 rtnl_dellink+0x52a/0x8e0 net/core/rtnetlink.c:3266
 rtnetlink_rcv_msg+0x82b/0xf50 net/core/rtnetlink.c:6428
 netlink_rcv_skb+0x1df/0x430 net/netlink/af_netlink.c:2549
 netlink_unicast_kernel net/netlink/af_netlink.c:1339 [inline]
 netlink_unicast+0x7c3/0x990 net/netlink/af_netlink.c:1365
 netlink_sendmsg+0xa2a/0xd60 net/netlink/af_netlink.c:1914
 sock_sendmsg_nosec net/socket.c:725 [inline]
 sock_sendmsg net/socket.c:748 [inline]
 ____sys_sendmsg+0x592/0x890 net/socket.c:2494
 ___sys_sendmsg net/socket.c:2548 [inline]
 __sys_sendmsg+0x2b0/0x3a0 net/socket.c:2577
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f5042b62ce9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 d1 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:00007ffef1143348 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f5042b62ce9
RDX: 0000000000000000 RSI: 0000000020000400 RDI: 0000000000000003
RBP: 00000000000f4240 R08: 0000000100000000 R09: 0000000100000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffef11433a0
R13: 000000000000f668 R14: 00007ffef114336c R15: 0000000000000003
 </TASK>

Crashes (492):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2023/08/16 11:58 upstream 4853c74bd7ab 39990d51 .config strace log report syz C [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root WARNING in rtnl_dellink
2023/08/15 09:54 upstream 91aa6c412d7f 39990d51 .config console log report syz C [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream WARNING in rtnl_dellink
2023/08/13 08:33 upstream ae545c3283dc 39990d51 .config console log report syz C [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream WARNING in rtnl_dellink
2023/08/11 09:00 upstream 25aa0bebba72 da3c3ef8 .config strace log report syz C [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING in rtnl_dellink
2023/08/11 06:20 net 25aa0bebba72 da3c3ef8 .config strace log report syz C ci-upstream-net-this-kasan-gce WARNING in rtnl_dellink
2023/08/10 07:13 net 048c796beb6e 13ca4cd6 .config strace log report syz C ci-upstream-net-this-kasan-gce WARNING in rtnl_dellink
2023/08/16 01:55 net-next c65dffc6f25c 39990d51 .config strace log report syz C [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce WARNING in rtnl_dellink
2023/08/12 18:07 net-next 3e6860ec3a22 39990d51 .config strace log report syz C [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce WARNING in rtnl_dellink
2023/08/18 05:35 upstream 16931859a650 74b106b6 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-selinux-root WARNING in rtnl_dellink
2023/08/18 02:16 upstream 16931859a650 74b106b6 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING in rtnl_dellink
2023/08/18 00:14 upstream 16931859a650 74b106b6 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce WARNING in rtnl_dellink
2023/08/17 19:37 upstream 16931859a650 74b106b6 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-selinux-root WARNING in rtnl_dellink
2023/08/17 17:16 upstream 16931859a650 74b106b6 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-selinux-root WARNING in rtnl_dellink
2023/08/17 11:19 upstream 4853c74bd7ab 74b106b6 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce WARNING in rtnl_dellink
2023/08/17 08:40 upstream 4853c74bd7ab 74b106b6 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-badwrites-root WARNING in rtnl_dellink
2023/08/17 07:39 upstream 4853c74bd7ab 74b106b6 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root WARNING in rtnl_dellink
2023/08/17 06:37 upstream 4853c74bd7ab 74b106b6 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING in rtnl_dellink
2023/08/17 01:21 upstream 4853c74bd7ab 7773e940 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING in rtnl_dellink
2023/08/16 16:29 upstream 4853c74bd7ab 7773e940 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-badwrites-root WARNING in rtnl_dellink
2023/08/16 13:19 upstream 4853c74bd7ab 39990d51 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce WARNING in rtnl_dellink
2023/08/16 09:00 upstream 4853c74bd7ab 39990d51 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING in rtnl_dellink
2023/08/16 06:23 upstream 2d7b8c6b90e4 39990d51 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-selinux-root WARNING in rtnl_dellink
2023/08/16 05:09 upstream d4f8e13b0614 39990d51 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream WARNING in rtnl_dellink
2023/08/16 01:18 upstream 2d7b8c6b90e4 39990d51 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-selinux-root WARNING in rtnl_dellink
2023/08/17 06:38 upstream 4853c74bd7ab 74b106b6 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-386 WARNING in rtnl_dellink
2023/08/16 10:45 upstream 4853c74bd7ab 39990d51 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-386 WARNING in rtnl_dellink
2023/08/15 14:53 upstream 91aa6c412d7f 39990d51 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 WARNING in rtnl_dellink
2023/08/14 04:40 net cc941e548bff 39990d51 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce WARNING in rtnl_dellink
2023/08/19 02:06 net-next c2e5f4fd1148 d216d8a0 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce WARNING in rtnl_dellink
2023/08/18 23:17 net-next c2e5f4fd1148 d216d8a0 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce WARNING in rtnl_dellink
2023/08/18 20:38 net-next c2e5f4fd1148 d216d8a0 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce WARNING in rtnl_dellink
2023/08/18 17:18 net-next c2e5f4fd1148 d216d8a0 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce WARNING in rtnl_dellink
2023/08/18 16:00 net-next c2e5f4fd1148 d216d8a0 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce WARNING in rtnl_dellink
2023/08/18 14:21 net-next c2e5f4fd1148 d216d8a0 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce WARNING in rtnl_dellink
2023/08/18 13:00 net-next a5e5b2cd47bc 74b106b6 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce WARNING in rtnl_dellink
2023/08/18 11:11 net-next a5e5b2cd47bc 74b106b6 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce WARNING in rtnl_dellink
2023/08/18 09:32 net-next a5e5b2cd47bc 74b106b6 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce WARNING in rtnl_dellink
2023/08/18 03:48 net-next a5e5b2cd47bc 74b106b6 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce WARNING in rtnl_dellink
2023/08/17 22:39 net-next f54a2a132a9d 74b106b6 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce WARNING in rtnl_dellink
2023/08/17 21:20 net-next f54a2a132a9d 74b106b6 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce WARNING in rtnl_dellink
2023/08/17 13:31 net-next f54a2a132a9d 74b106b6 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce WARNING in rtnl_dellink
2023/08/17 10:08 net-next f54a2a132a9d 74b106b6 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce WARNING in rtnl_dellink
2023/08/17 03:33 net-next 950fe35831af 7773e940 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce WARNING in rtnl_dellink
2023/08/16 19:05 net-next 950fe35831af 7773e940 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce WARNING in rtnl_dellink
2023/08/16 17:48 net-next 950fe35831af 7773e940 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce WARNING in rtnl_dellink
2023/08/16 15:26 net-next 950fe35831af 7773e940 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce WARNING in rtnl_dellink
2023/08/16 14:20 net-next 950fe35831af 7773e940 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce WARNING in rtnl_dellink
2023/08/16 07:38 net-next c65dffc6f25c 39990d51 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce WARNING in rtnl_dellink
2023/08/21 11:45 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci c014c37159a1 d216d8a0 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 WARNING in rtnl_dellink
2023/08/21 03:09 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci c014c37159a1 d216d8a0 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 WARNING in rtnl_dellink
2023/08/20 20:59 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci c014c37159a1 d216d8a0 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 WARNING in rtnl_dellink
2023/08/20 19:27 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci c014c37159a1 d216d8a0 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 WARNING in rtnl_dellink
2023/08/20 18:24 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci c014c37159a1 d216d8a0 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 WARNING in rtnl_dellink
2023/08/20 10:40 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci c014c37159a1 d216d8a0 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 WARNING in rtnl_dellink
2023/08/20 09:36 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci c014c37159a1 d216d8a0 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 WARNING in rtnl_dellink
2023/08/20 06:18 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci c014c37159a1 d216d8a0 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 WARNING in rtnl_dellink
2023/08/19 00:23 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci c014c37159a1 d216d8a0 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 WARNING in rtnl_dellink
2023/08/18 21:41 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci c014c37159a1 d216d8a0 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 WARNING in rtnl_dellink
2023/08/17 04:50 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci ac9847efd629 74b106b6 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 WARNING in rtnl_dellink
2023/08/16 22:43 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci ac9847efd629 7773e940 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 WARNING in rtnl_dellink
2023/08/16 20:54 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci ac9847efd629 7773e940 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 WARNING in rtnl_dellink
* Struck through repros no longer work on HEAD.