netdev - Re: [PATCH] nfc: fix segfault in nfc_genl_dump_devices

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Message-Id: <163906560946.14007.9068116924167275493.git-patchwork-notify@kernel.org>
Date:   Thu, 09 Dec 2021 16:00:09 +0000
From:   patchwork-bot+netdevbpf@...nel.org
To:     Tadeusz Struk <tadeusz.struk@...aro.org>
Cc:     netdev@...r.kernel.org, krzysztof.kozlowski@...onical.com,
        davem@...emloft.net, kuba@...nel.org, stable@...r.kernel.org,
        syzbot+f9f76f4a0766420b4a02@...kaller.appspotmail.com
Subject: Re: [PATCH] nfc: fix segfault in nfc_genl_dump_devices_done

Hello:

This patch was applied to netdev/net.git (master)
by Jakub Kicinski <kuba@...nel.org>:

On Wed,  8 Dec 2021 10:27:42 -0800 you wrote:
> When kmalloc in nfc_genl_dump_devices() fails then
> nfc_genl_dump_devices_done() segfaults as below
> 
> KASAN: null-ptr-deref in range [0x0000000000000008-0x000000000000000f]
> CPU: 0 PID: 25 Comm: kworker/0:1 Not tainted 5.16.0-rc4-01180-g2a987e65025e-dirty #5
> Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-6.fc35 04/01/2014
> Workqueue: events netlink_sock_destruct_work
> RIP: 0010:klist_iter_exit+0x26/0x80
> Call Trace:
> <TASK>
> class_dev_iter_exit+0x15/0x20
> nfc_genl_dump_devices_done+0x3b/0x50
> genl_lock_done+0x84/0xd0
> netlink_sock_destruct+0x8f/0x270
> __sk_destruct+0x64/0x3b0
> sk_destruct+0xa8/0xd0
> __sk_free+0x2e8/0x3d0
> sk_free+0x51/0x90
> netlink_sock_destruct_work+0x1c/0x20
> process_one_work+0x411/0x710
> worker_thread+0x6fd/0xa80
> 
> [...]

Here is the summary with links:
  - nfc: fix segfault in nfc_genl_dump_devices_done
    https://git.kernel.org/netdev/net/c/fd79a0cbf0b2

You are awesome, thank you!
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