linux-kernel - Re: [PATCH net v3] net: bridge: fix memleak in br_add

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Date:   Tue, 10 Aug 2021 20:30:05 +0000
From:   patchwork-bot+netdevbpf@...nel.org
To:     Yang Yingliang <yangyingliang@...wei.com>
Cc:     linux-kernel@...r.kernel.org, netdev@...r.kernel.org,
        bridge@...ts.linux-foundation.org, roopa@...dia.com,
        nikolay@...dia.com, davem@...emloft.net, kuba@...nel.org
Subject: Re: [PATCH net v3] net: bridge: fix memleak in br_add_if()

Hello:

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

On Mon, 9 Aug 2021 21:20:23 +0800 you wrote:
> I got a memleak report:
> 
> BUG: memory leak
> unreferenced object 0x607ee521a658 (size 240):
> comm "syz-executor.0", pid 955, jiffies 4294780569 (age 16.449s)
> hex dump (first 32 bytes, cpu 1):
> 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
> 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
> backtrace:
> [<00000000d830ea5a>] br_multicast_add_port+0x1c2/0x300 net/bridge/br_multicast.c:1693
> [<00000000274d9a71>] new_nbp net/bridge/br_if.c:435 [inline]
> [<00000000274d9a71>] br_add_if+0x670/0x1740 net/bridge/br_if.c:611
> [<0000000012ce888e>] do_set_master net/core/rtnetlink.c:2513 [inline]
> [<0000000012ce888e>] do_set_master+0x1aa/0x210 net/core/rtnetlink.c:2487
> [<0000000099d1cafc>] __rtnl_newlink+0x1095/0x13e0 net/core/rtnetlink.c:3457
> [<00000000a01facc0>] rtnl_newlink+0x64/0xa0 net/core/rtnetlink.c:3488
> [<00000000acc9186c>] rtnetlink_rcv_msg+0x369/0xa10 net/core/rtnetlink.c:5550
> [<00000000d4aabb9c>] netlink_rcv_skb+0x134/0x3d0 net/netlink/af_netlink.c:2504
> [<00000000bc2e12a3>] netlink_unicast_kernel net/netlink/af_netlink.c:1314 [inline]
> [<00000000bc2e12a3>] netlink_unicast+0x4a0/0x6a0 net/netlink/af_netlink.c:1340
> [<00000000e4dc2d0e>] netlink_sendmsg+0x789/0xc70 net/netlink/af_netlink.c:1929
> [<000000000d22c8b3>] sock_sendmsg_nosec net/socket.c:654 [inline]
> [<000000000d22c8b3>] sock_sendmsg+0x139/0x170 net/socket.c:674
> [<00000000e281417a>] ____sys_sendmsg+0x658/0x7d0 net/socket.c:2350
> [<00000000237aa2ab>] ___sys_sendmsg+0xf8/0x170 net/socket.c:2404
> [<000000004f2dc381>] __sys_sendmsg+0xd3/0x190 net/socket.c:2433
> [<0000000005feca6c>] do_syscall_64+0x37/0x90 arch/x86/entry/common.c:47
> [<000000007304477d>] entry_SYSCALL_64_after_hwframe+0x44/0xae
> 
> [...]

Here is the summary with links:
  - [net,v3] net: bridge: fix memleak in br_add_if()
    https://git.kernel.org/netdev/net/c/519133debcc1

You are awesome, thank you!
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