From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <linux-wireless-owner@kernel.org>
X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on
	aws-us-west-2-korg-lkml-1.web.codeaurora.org
Received: from vger.kernel.org (vger.kernel.org [23.128.96.18])
	by smtp.lore.kernel.org (Postfix) with ESMTP id C57F5C43334
	for <linux-wireless@archiver.kernel.org>; Wed, 13 Jul 2022 10:35:11 +0000 (UTC)
Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand
        id S236034AbiGMKfK (ORCPT
        <rfc822;linux-wireless@archiver.kernel.org>);
        Wed, 13 Jul 2022 06:35:10 -0400
Received: from lindbergh.monkeyblade.net ([23.128.96.19]:58432 "EHLO
        lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org
        with ESMTP id S235954AbiGMKfI (ORCPT
        <rfc822;linux-wireless@vger.kernel.org>);
        Wed, 13 Jul 2022 06:35:08 -0400
Received: from mail-il1-f200.google.com (mail-il1-f200.google.com [209.85.166.200])
        by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 94B4CF0E26
        for <linux-wireless@vger.kernel.org>; Wed, 13 Jul 2022 03:35:07 -0700 (PDT)
Received: by mail-il1-f200.google.com with SMTP id r10-20020a92cd8a000000b002dca70934a2so347650ilb.6
        for <linux-wireless@vger.kernel.org>; Wed, 13 Jul 2022 03:35:07 -0700 (PDT)
X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed;
        d=1e100.net; s=20210112;
        h=x-gm-message-state:mime-version:date:in-reply-to:message-id:subject
         :from:to;
        bh=/gNbNii7yMVWS8fxbVS9LZCYRdyRODnecdP2k3C4uIE=;
        b=PkJ77++tfoiSmVHtsMXLM/BLXpjMr4NZQn+2Mkdw5kq9udK9oQAk0MSVrHSsxaO4GB
         AGKKfeCgfIV9JSkQsVwsgIIGU4IjoPyRnQqEJjOKhtsg69TOlDKG9fzomrf8ZDw5lsL2
         QI7TebDxBuab9OKG387po3qIixDpFx6TeWmYmIO2jHG2VG3qxhWjclMYDUlZSxzp9+Oz
         M1Id9RD7ZECp9ASZBIM4usME0Yy+/8WOHRO96YVH9F5wzqbcoaKnQAv4mSwxVcvjWTVR
         hyA3SLHGcYQ+uIdXtnpdeGt9IcWYUwTYcRMCUqlp3scPLpcZV7Js2ftv5V5109ANXwKc
         e+AA==
X-Gm-Message-State: AJIora8KTv7LL7jmufjrr5kC5Fc9RqOK1+7X1h6ZhecoruTUheM2NjCZ
        Nsd6TWyN7zSvDHtdiaAlkqnwuUMecYET5d+naBoC8hVz4iyz
X-Google-Smtp-Source: AGRyM1u39feVJMmVXdQykAP9gk0+Sn4axFDWtMo/oH1I3W6U5Uo5jJH972oB31GqLPTTVGl5/rxZUeBzPstCYklnew7dLEAj8YY2
MIME-Version: 1.0
X-Received: by 2002:a05:6638:300f:b0:335:b12d:3126 with SMTP id
 r15-20020a056638300f00b00335b12d3126mr1477619jak.210.1657708506885; Wed, 13
 Jul 2022 03:35:06 -0700 (PDT)
Date:   Wed, 13 Jul 2022 03:35:06 -0700
In-Reply-To: <181f7180015.1ea4d3b3328398.7889962633178976958@siddh.me>
X-Google-Appengine-App-Id: s~syzkaller
X-Google-Appengine-App-Id-Alias: syzkaller
Message-ID: <000000000000b1b55a05e3ad5692@google.com>
Subject: Re: [syzbot] memory leak in cfg80211_inform_single_bss_frame_data
From:   syzbot <syzbot+7a942657a255a9d9b18a@syzkaller.appspotmail.com>
To:     code@siddh.me, davem@davemloft.net, johannes@sipsolutions.net,
        kuba@kernel.org, linux-kernel@vger.kernel.org,
        linux-wireless@vger.kernel.org, netdev@vger.kernel.org,
        syzkaller-bugs@googlegroups.com
Content-Type: text/plain; charset="UTF-8"
Precedence: bulk
List-ID: <linux-wireless.vger.kernel.org>
X-Mailing-List: linux-wireless@vger.kernel.org

Hello,

syzbot has tested the proposed patch but the reproducer is still triggering an issue:
memory leak in regulatory_init_db

BUG: memory leak
unreferenced object 0xffff888145137a00 (size 64):
  comm "swapper/0", pid 1, jiffies 4294937939 (age 68.850s)
  hex dump (first 32 bytes):
    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
    ff ff ff ff 00 00 00 00 00 00 00 00 30 30 00 00  ............00..
  backtrace:
    [<ffffffff86ff026b>] kmalloc include/linux/slab.h:600 [inline]
    [<ffffffff86ff026b>] kzalloc include/linux/slab.h:733 [inline]
    [<ffffffff86ff026b>] regulatory_hint_core net/wireless/reg.c:3216 [inline]
    [<ffffffff86ff026b>] regulatory_init_db+0x22f/0x2de net/wireless/reg.c:4277
    [<ffffffff81000fe3>] do_one_initcall+0x63/0x2e0 init/main.c:1295
    [<ffffffff86f4eb10>] do_initcall_level init/main.c:1368 [inline]
    [<ffffffff86f4eb10>] do_initcalls init/main.c:1384 [inline]
    [<ffffffff86f4eb10>] do_basic_setup init/main.c:1403 [inline]
    [<ffffffff86f4eb10>] kernel_init_freeable+0x255/0x2cf init/main.c:1610
    [<ffffffff845b427a>] kernel_init+0x1a/0x1c0 init/main.c:1499
    [<ffffffff8100225f>] ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306

BUG: memory leak
unreferenced object 0xffff88810a760180 (size 96):
  comm "kworker/u4:2", pid 43, jiffies 4294943904 (age 9.220s)
  hex dump (first 32 bytes):
    fa fd 93 53 ad e3 05 00 00 00 00 00 00 00 00 00  ...S............
    00 00 00 00 00 00 00 00 28 00 00 00 01 00 06 10  ........(.......
  backtrace:
    [<ffffffff840740b6>] cfg80211_inform_single_bss_frame_data+0x186/0x6a0 net/wireless/scan.c:2445
    [<ffffffff8407461b>] cfg80211_inform_bss_frame_data+0x4b/0x460 net/wireless/scan.c:2506
    [<ffffffff84115816>] ieee80211_bss_info_update+0x196/0x440 net/mac80211/scan.c:190
    [<ffffffff841240e2>] ieee80211_rx_bss_info net/mac80211/ibss.c:1119 [inline]
    [<ffffffff841240e2>] ieee80211_rx_mgmt_probe_beacon net/mac80211/ibss.c:1610 [inline]
    [<ffffffff841240e2>] ieee80211_ibss_rx_queued_mgmt+0x7d2/0x11a0 net/mac80211/ibss.c:1639
    [<ffffffff84126b81>] ieee80211_iface_process_skb net/mac80211/iface.c:1527 [inline]
    [<ffffffff84126b81>] ieee80211_iface_work+0x601/0x780 net/mac80211/iface.c:1581
    [<ffffffff8127130f>] process_one_work+0x2bf/0x600 kernel/workqueue.c:2289
    [<ffffffff81271c39>] worker_thread+0x59/0x5b0 kernel/workqueue.c:2436
    [<ffffffff8127b955>] kthread+0x125/0x160 kernel/kthread.c:376
    [<ffffffff8100225f>] ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306

BUG: memory leak
unreferenced object 0xffff88810a760100 (size 96):
  comm "kworker/u4:0", pid 8, jiffies 4294943986 (age 8.400s)
  hex dump (first 32 bytes):
    36 80 a0 53 ad e3 05 00 00 00 00 00 00 00 00 00  6..S............
    00 00 00 00 00 00 00 00 28 00 00 00 01 00 06 10  ........(.......
  backtrace:
    [<ffffffff840740b6>] cfg80211_inform_single_bss_frame_data+0x186/0x6a0 net/wireless/scan.c:2445
    [<ffffffff8407461b>] cfg80211_inform_bss_frame_data+0x4b/0x460 net/wireless/scan.c:2506
    [<ffffffff84115816>] ieee80211_bss_info_update+0x196/0x440 net/mac80211/scan.c:190
    [<ffffffff841240e2>] ieee80211_rx_bss_info net/mac80211/ibss.c:1119 [inline]
    [<ffffffff841240e2>] ieee80211_rx_mgmt_probe_beacon net/mac80211/ibss.c:1610 [inline]
    [<ffffffff841240e2>] ieee80211_ibss_rx_queued_mgmt+0x7d2/0x11a0 net/mac80211/ibss.c:1639
    [<ffffffff84126b81>] ieee80211_iface_process_skb net/mac80211/iface.c:1527 [inline]
    [<ffffffff84126b81>] ieee80211_iface_work+0x601/0x780 net/mac80211/iface.c:1581
    [<ffffffff8127130f>] process_one_work+0x2bf/0x600 kernel/workqueue.c:2289
    [<ffffffff81271c39>] worker_thread+0x59/0x5b0 kernel/workqueue.c:2436
    [<ffffffff8127b955>] kthread+0x125/0x160 kernel/kthread.c:376
    [<ffffffff8100225f>] ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306

BUG: memory leak
unreferenced object 0xffff888114cb9100 (size 96):
  comm "kworker/u4:3", pid 53, jiffies 4294944017 (age 8.090s)
  hex dump (first 32 bytes):
    95 32 a5 53 ad e3 05 00 00 00 00 00 00 00 00 00  .2.S............
    00 00 00 00 00 00 00 00 28 00 00 00 01 00 06 10  ........(.......
  backtrace:
    [<ffffffff840740b6>] cfg80211_inform_single_bss_frame_data+0x186/0x6a0 net/wireless/scan.c:2445
    [<ffffffff8407461b>] cfg80211_inform_bss_frame_data+0x4b/0x460 net/wireless/scan.c:2506
    [<ffffffff84115816>] ieee80211_bss_info_update+0x196/0x440 net/mac80211/scan.c:190
    [<ffffffff841240e2>] ieee80211_rx_bss_info net/mac80211/ibss.c:1119 [inline]
    [<ffffffff841240e2>] ieee80211_rx_mgmt_probe_beacon net/mac80211/ibss.c:1610 [inline]
    [<ffffffff841240e2>] ieee80211_ibss_rx_queued_mgmt+0x7d2/0x11a0 net/mac80211/ibss.c:1639
    [<ffffffff84126b81>] ieee80211_iface_process_skb net/mac80211/iface.c:1527 [inline]
    [<ffffffff84126b81>] ieee80211_iface_work+0x601/0x780 net/mac80211/iface.c:1581
    [<ffffffff8127130f>] process_one_work+0x2bf/0x600 kernel/workqueue.c:2289
    [<ffffffff81271c39>] worker_thread+0x59/0x5b0 kernel/workqueue.c:2436
    [<ffffffff8127b955>] kthread+0x125/0x160 kernel/kthread.c:376
    [<ffffffff8100225f>] ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306

BUG: memory leak
unreferenced object 0xffff888114afa500 (size 96):
  comm "kworker/u4:3", pid 53, jiffies 4294944037 (age 7.890s)
  hex dump (first 32 bytes):
    1c 46 a8 53 ad e3 05 00 00 00 00 00 00 00 00 00  .F.S............
    00 00 00 00 00 00 00 00 28 00 00 00 01 00 06 10  ........(.......
  backtrace:
    [<ffffffff840740b6>] cfg80211_inform_single_bss_frame_data+0x186/0x6a0 net/wireless/scan.c:2445
    [<ffffffff8407461b>] cfg80211_inform_bss_frame_data+0x4b/0x460 net/wireless/scan.c:2506
    [<ffffffff84115816>] ieee80211_bss_info_update+0x196/0x440 net/mac80211/scan.c:190
    [<ffffffff841240e2>] ieee80211_rx_bss_info net/mac80211/ibss.c:1119 [inline]
    [<ffffffff841240e2>] ieee80211_rx_mgmt_probe_beacon net/mac80211/ibss.c:1610 [inline]
    [<ffffffff841240e2>] ieee80211_ibss_rx_queued_mgmt+0x7d2/0x11a0 net/mac80211/ibss.c:1639
    [<ffffffff84126b81>] ieee80211_iface_process_skb net/mac80211/iface.c:1527 [inline]
    [<ffffffff84126b81>] ieee80211_iface_work+0x601/0x780 net/mac80211/iface.c:1581
    [<ffffffff8127130f>] process_one_work+0x2bf/0x600 kernel/workqueue.c:2289
    [<ffffffff81271c39>] worker_thread+0x59/0x5b0 kernel/workqueue.c:2436
    [<ffffffff8127b955>] kthread+0x125/0x160 kernel/kthread.c:376
    [<ffffffff8100225f>] ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306

[   75.59820


Tested on:

commit:         b047602d Merge tag 'trace-v5.19-rc5' of git://git.kern..
git tree:       upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=10cfa478080000
kernel config:  https://syzkaller.appspot.com/x/.config?x=689b5fe7168a1260
dashboard link: https://syzkaller.appspot.com/bug?extid=7a942657a255a9d9b18a
compiler:       gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2

Note: no patches were applied.