netdev - Re: [PATCH v2] Bluetooth: L2CAP: Fix memory leak in vhci

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Date:   Tue, 18 Oct 2022 20:00:17 +0000
From:   patchwork-bot+bluetooth@...nel.org
To:     Hawkins Jiawei <yin31149@...il.com>
Cc:     marcel@...tmann.org, johan.hedberg@...il.com, luiz.dentz@...il.com,
        davem@...emloft.net, edumazet@...gle.com, kuba@...nel.org,
        pabeni@...hat.com, 18801353760@....com,
        linux-bluetooth@...r.kernel.org, linux-kernel@...r.kernel.org,
        luiz.von.dentz@...el.com, netdev@...r.kernel.org,
        syzbot+8f819e36e01022991cfa@...kaller.appspotmail.com,
        syzkaller-bugs@...glegroups.com
Subject: Re: [PATCH v2] Bluetooth: L2CAP: Fix memory leak in vhci_write

Hello:

This patch was applied to bluetooth/bluetooth-next.git (master)
by Luiz Augusto von Dentz <luiz.von.dentz@...el.com>:

On Tue, 18 Oct 2022 10:18:51 +0800 you wrote:
> Syzkaller reports a memory leak as follows:
> ====================================
> BUG: memory leak
> unreferenced object 0xffff88810d81ac00 (size 240):
>   [...]
>   hex dump (first 32 bytes):
>     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:
>     [<ffffffff838733d9>] __alloc_skb+0x1f9/0x270 net/core/skbuff.c:418
>     [<ffffffff833f742f>] alloc_skb include/linux/skbuff.h:1257 [inline]
>     [<ffffffff833f742f>] bt_skb_alloc include/net/bluetooth/bluetooth.h:469 [inline]
>     [<ffffffff833f742f>] vhci_get_user drivers/bluetooth/hci_vhci.c:391 [inline]
>     [<ffffffff833f742f>] vhci_write+0x5f/0x230 drivers/bluetooth/hci_vhci.c:511
>     [<ffffffff815e398d>] call_write_iter include/linux/fs.h:2192 [inline]
>     [<ffffffff815e398d>] new_sync_write fs/read_write.c:491 [inline]
>     [<ffffffff815e398d>] vfs_write+0x42d/0x540 fs/read_write.c:578
>     [<ffffffff815e3cdd>] ksys_write+0x9d/0x160 fs/read_write.c:631
>     [<ffffffff845e0645>] do_syscall_x64 arch/x86/entry/common.c:50 [inline]
>     [<ffffffff845e0645>] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
>     [<ffffffff84600087>] entry_SYSCALL_64_after_hwframe+0x63/0xcd
> ====================================
> 
> [...]

Here is the summary with links:
  - [v2] Bluetooth: L2CAP: Fix memory leak in vhci_write
    https://git.kernel.org/bluetooth/bluetooth-next/c/97097c85c088

You are awesome, thank you!
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