linux-kernel - Re: [PATCH net] net/802/mrp: fix memleak in mrp_request

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Message-Id: <162516360421.12749.14576932158898469827.git-patchwork-notify@kernel.org>
Date:   Thu, 01 Jul 2021 18:20:04 +0000
From:   patchwork-bot+netdevbpf@...nel.org
To:     Yang Yingliang <yangyingliang@...wei.com>
Cc:     linux-kernel@...r.kernel.org, netdev@...r.kernel.org,
        davem@...emloft.net, kuba@...nel.org
Subject: Re: [PATCH net] net/802/mrp: fix memleak in mrp_request_join()

Hello:

This patch was applied to netdev/net.git (refs/heads/master):

On Tue, 29 Jun 2021 15:22:37 +0800 you wrote:
> I got kmemleak report when doing fuzz test:
> 
> BUG: memory leak
> unreferenced object 0xffff88810c239500 (size 64):
> comm "syz-executor940", pid 882, jiffies 4294712870 (age 14.631s)
> hex dump (first 32 bytes):
> 01 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
> 00 00 00 00 00 00 00 00 01 00 00 00 01 02 00 04 ................
> backtrace:
> [<00000000a323afa4>] slab_alloc_node mm/slub.c:2972 [inline]
> [<00000000a323afa4>] slab_alloc mm/slub.c:2980 [inline]
> [<00000000a323afa4>] __kmalloc+0x167/0x340 mm/slub.c:4130
> [<000000005034ca11>] kmalloc include/linux/slab.h:595 [inline]
> [<000000005034ca11>] mrp_attr_create net/802/mrp.c:276 [inline]
> [<000000005034ca11>] mrp_request_join+0x265/0x550 net/802/mrp.c:530
> [<00000000fcfd81f3>] vlan_mvrp_request_join+0x145/0x170 net/8021q/vlan_mvrp.c:40
> [<000000009258546e>] vlan_dev_open+0x477/0x890 net/8021q/vlan_dev.c:292
> [<0000000059acd82b>] __dev_open+0x281/0x410 net/core/dev.c:1609
> [<000000004e6dc695>] __dev_change_flags+0x424/0x560 net/core/dev.c:8767
> [<00000000471a09af>] rtnl_configure_link+0xd9/0x210 net/core/rtnetlink.c:3122
> [<0000000037a4672b>] __rtnl_newlink+0xe08/0x13e0 net/core/rtnetlink.c:3448
> [<000000008d5d0fda>] rtnl_newlink+0x64/0xa0 net/core/rtnetlink.c:3488
> [<000000004882fe39>] rtnetlink_rcv_msg+0x369/0xa10 net/core/rtnetlink.c:5552
> [<00000000907e6c54>] netlink_rcv_skb+0x134/0x3d0 net/netlink/af_netlink.c:2504
> [<00000000e7d7a8c4>] netlink_unicast_kernel net/netlink/af_netlink.c:1314 [inline]
> [<00000000e7d7a8c4>] netlink_unicast+0x4a0/0x6a0 net/netlink/af_netlink.c:1340
> [<00000000e0645d50>] netlink_sendmsg+0x78e/0xc90 net/netlink/af_netlink.c:1929
> [<00000000c24559b7>] sock_sendmsg_nosec net/socket.c:654 [inline]
> [<00000000c24559b7>] sock_sendmsg+0x139/0x170 net/socket.c:674
> [<00000000fc210bc2>] ____sys_sendmsg+0x658/0x7d0 net/socket.c:2350
> [<00000000be4577b5>] ___sys_sendmsg+0xf8/0x170 net/socket.c:2404
> 
> [...]

Here is the summary with links:
  - [net] net/802/mrp: fix memleak in mrp_request_join()
    https://git.kernel.org/netdev/net/c/996af62167d0

You are awesome, thank you!
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