From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 0E911C433F5 for ; Mon, 25 Oct 2021 22:33:26 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id E6B3C61073 for ; Mon, 25 Oct 2021 22:33:25 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234049AbhJYWfr (ORCPT ); Mon, 25 Oct 2021 18:35:47 -0400 Received: from mail-il1-f197.google.com ([209.85.166.197]:57281 "EHLO mail-il1-f197.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233848AbhJYWfq (ORCPT ); Mon, 25 Oct 2021 18:35:46 -0400 Received: by mail-il1-f197.google.com with SMTP id h17-20020a056e021d9100b0025a38d5fea8so3588579ila.23 for ; Mon, 25 Oct 2021 15:33:23 -0700 (PDT) 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In-Reply-To: <000000000000f632ba05c3cb12c2@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000e1063f05cf34f2a8@google.com> Subject: Re: [syzbot] memory leak in cfg80211_inform_single_bss_frame_data From: syzbot To: davem@davemloft.net, johannes@sipsolutions.net, kuba@kernel.org, linux-kernel@vger.kernel.org, linux-wireless@vger.kernel.org, mudongliangabcd@gmail.com, netdev@vger.kernel.org, phind.uet@gmail.com, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org syzbot has found a reproducer for the following issue on: HEAD commit: 87066fdd2e30 Revert "mm/secretmem: use refcount_t instead .. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=16b55554b00000 kernel config: https://syzkaller.appspot.com/x/.config?x=d25eeb482b0f99b 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 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=171cf464b00000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=1396b19f300000 IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+7a942657a255a9d9b18a@syzkaller.appspotmail.com BUG: memory leak unreferenced object 0xffff88810f3c7980 (size 96): comm "kworker/u4:0", pid 8, jiffies 4294948721 (age 17.180s) hex dump (first 32 bytes): e5 90 aa e8 34 cf 05 00 00 00 00 00 00 00 00 00 ....4........... 00 00 00 00 00 00 00 00 28 00 00 00 01 00 06 10 ........(....... backtrace: [] cfg80211_inform_single_bss_frame_data+0x139/0x640 net/wireless/scan.c:2383 [] cfg80211_inform_bss_frame_data+0x4b/0x470 net/wireless/scan.c:2444 [] ieee80211_bss_info_update+0x16e/0x460 net/mac80211/scan.c:190 [] ieee80211_rx_bss_info net/mac80211/ibss.c:1119 [inline] [] ieee80211_rx_mgmt_probe_beacon+0x61a/0x970 net/mac80211/ibss.c:1608 [] ieee80211_ibss_rx_queued_mgmt+0x23c/0x6e0 net/mac80211/ibss.c:1635 [] ieee80211_iface_process_skb net/mac80211/iface.c:1439 [inline] [] ieee80211_iface_work+0x5f7/0x770 net/mac80211/iface.c:1493 [] process_one_work+0x2cf/0x620 kernel/workqueue.c:2297 [] worker_thread+0x59/0x5d0 kernel/workqueue.c:2444 [] kthread+0x188/0x1d0 kernel/kthread.c:319 [] ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295 BUG: memory leak unreferenced object 0xffff88810f3c7b00 (size 96): comm "kworker/u4:0", pid 8, jiffies 4294948721 (age 17.180s) hex dump (first 32 bytes): f5 90 aa e8 34 cf 05 00 00 00 00 00 00 00 00 00 ....4........... 00 00 00 00 00 00 00 00 28 00 00 00 01 00 06 10 ........(....... backtrace: [] cfg80211_inform_single_bss_frame_data+0x139/0x640 net/wireless/scan.c:2383 [] cfg80211_inform_bss_frame_data+0x4b/0x470 net/wireless/scan.c:2444 [] ieee80211_bss_info_update+0x16e/0x460 net/mac80211/scan.c:190 [] ieee80211_rx_bss_info net/mac80211/ibss.c:1119 [inline] [] ieee80211_rx_mgmt_probe_beacon+0x61a/0x970 net/mac80211/ibss.c:1608 [] ieee80211_ibss_rx_queued_mgmt+0x23c/0x6e0 net/mac80211/ibss.c:1635 [] ieee80211_iface_process_skb net/mac80211/iface.c:1439 [inline] [] ieee80211_iface_work+0x5f7/0x770 net/mac80211/iface.c:1493 [] process_one_work+0x2cf/0x620 kernel/workqueue.c:2297 [] worker_thread+0x59/0x5d0 kernel/workqueue.c:2444 [] kthread+0x188/0x1d0 kernel/kthread.c:319 [] ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295 BUG: memory leak unreferenced object 0xffff88810f3c7680 (size 96): comm "kworker/u4:1", pid 146, jiffies 4294948731 (age 17.080s) hex dump (first 32 bytes): e9 20 ac e8 34 cf 05 00 00 00 00 00 00 00 00 00 . ..4........... 00 00 00 00 00 00 00 00 28 00 00 00 01 00 06 10 ........(....... backtrace: [] cfg80211_inform_single_bss_frame_data+0x139/0x640 net/wireless/scan.c:2383 [] cfg80211_inform_bss_frame_data+0x4b/0x470 net/wireless/scan.c:2444 [] ieee80211_bss_info_update+0x16e/0x460 net/mac80211/scan.c:190 [] ieee80211_rx_bss_info net/mac80211/ibss.c:1119 [inline] [] ieee80211_rx_mgmt_probe_beacon+0x61a/0x970 net/mac80211/ibss.c:1608 [] ieee80211_ibss_rx_queued_mgmt+0x23c/0x6e0 net/mac80211/ibss.c:1635 [] ieee80211_iface_process_skb net/mac80211/iface.c:1439 [inline] [] ieee80211_iface_work+0x5f7/0x770 net/mac80211/iface.c:1493 [] process_one_work+0x2cf/0x620 kernel/workqueue.c:2297 [] worker_thread+0x59/0x5d0 kernel/workqueue.c:2444 [] kthread+0x188/0x1d0 kernel/kthread.c:319 [] ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295 BUG: memory leak unreferenced object 0xffff888111520f80 (size 96): comm "kworker/u4:1", pid 146, jiffies 4294948731 (age 17.080s) hex dump (first 32 bytes): fb 20 ac e8 34 cf 05 00 00 00 00 00 00 00 00 00 . ..4........... 00 00 00 00 00 00 00 00 28 00 00 00 01 00 06 10 ........(....... backtrace: [] cfg80211_inform_single_bss_frame_data+0x139/0x640 net/wireless/scan.c:2383 [] cfg80211_inform_bss_frame_data+0x4b/0x470 net/wireless/scan.c:2444 [] ieee80211_bss_info_update+0x16e/0x460 net/mac80211/scan.c:190 [] ieee80211_rx_bss_info net/mac80211/ibss.c:1119 [inline] [] ieee80211_rx_mgmt_probe_beacon+0x61a/0x970 net/mac80211/ibss.c:1608 [] ieee80211_ibss_rx_queued_mgmt+0x23c/0x6e0 net/mac80211/ibss.c:1635 [] ieee80211_iface_process_skb net/mac80211/iface.c:1439 [inline] [] ieee80211_iface_work+0x5f7/0x770 net/mac80211/iface.c:1493 [] process_one_work+0x2cf/0x620 kernel/workqueue.c:2297 [] worker_thread+0x59/0x5d0 kernel/workqueue.c:2444 [] kthread+0x188/0x1d0 kernel/kthread.c:319 [] ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295