From nobody Sat Feb 7 21:16:08 2026 Received: from mail-oo1-f70.google.com (mail-oo1-f70.google.com [209.85.161.70]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 181A331A552 for ; Sun, 18 Jan 2026 23:29:59 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.161.70 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1768779001; cv=none; b=Kf9DaPaHbABZkKuXLCrzDDGQ2Q+YuwIVsOYDv7C6Qr3r4SNmEi4uAUIYIP/5vFP3FiMTkuyIButPD86nO/2CsQ82ZvRsOGxRf7h4TMrzgWBsL6VajZA+SkvLLIV3AYnJGfH39oiWXFuISKVUNYzuFYzyAQZd1yi/ifQKee+qP+o= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1768779001; c=relaxed/simple; bh=HptQ6rYqdIxJlci4C8TH+8vQmeTCc5oaU8ujQXKhsZo=; h=MIME-Version:Date:In-Reply-To:Message-ID:Subject:From:To: Content-Type; b=BLeeSzTg+LRwExFJNoJJKSV0WaSM7XQfHpj8k0cFFMFZPImmU7z3uS1ONbKAqfEaLpbNZhkowQzwVJZxG8JdYbv+GXVbJLdISCAghQC0hVHX/DrVxAHYW1MK997QzBovuaSRaHRKM+VX+ufDRI7XplJVznwhXQWq/g/qchC1Mb4= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=fail (p=none dis=none) header.from=syzkaller.appspotmail.com; spf=pass smtp.mailfrom=M3KW2WVRGUFZ5GODRSRYTGD7.apphosting.bounces.google.com; arc=none smtp.client-ip=209.85.161.70 Authentication-Results: smtp.subspace.kernel.org; dmarc=fail (p=none dis=none) header.from=syzkaller.appspotmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=M3KW2WVRGUFZ5GODRSRYTGD7.apphosting.bounces.google.com Received: by mail-oo1-f70.google.com with SMTP id 006d021491bc7-660feca27c9so6185187eaf.1 for ; Sun, 18 Jan 2026 15:29:59 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1768778999; x=1769383799; h=to:from:subject:message-id:in-reply-to:date:mime-version :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=87pQYNJCSQ4wED0rvpa+FoV+px2Hd43RoEIJzDSyHh4=; b=sex6CfTBGkEgspMtZuxtA7dLq5+vS8SZGMIs/ZXojFrwNxhVJxXb/rGkPi+eQHxKcL VqlEGE36mdp2WjnD0Z/pi4uHW3QYNzyJ3X3W8nFjDb/6PpWVt8h4EaF9UCuBsKZfVagN hkPnsRzEYP77WlRkWtQef2jc1NzluIbr4ITSfaGqgJnJ20kLv5nkXoYqM4MP3DJTRm9x 6Kj+gUjHNOkjSz/65yWbPqEzPLWaJFMDUwFd33FH64ZjMx3XNvEQdPHywCHubstJmOVI HNdegk3HcDHSlnWkZK5yT+UXHqBIjW8sz+kLRuqGLCRty3EI2rFpkkZTmrpnGx/+RKFl ikyQ== X-Gm-Message-State: AOJu0YxbY+wopyB2/mcNa1uKrbDte7jDdyLieyMqUOG1nwS/RImPqAlY Ye75GE01YO4gyrYHpS5TVG33mqk18GmhL/23hY5f5HS0Y8b7k4i4Dqtw/TTMESci1TqEWbgI+u8 Vk1iyPRaybUkC5HMBTkpeST4fkMdvYWpVCp3j9RzzKu7S64z/RILJS8lE8lg= Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6820:1b13:b0:659:9a49:8e66 with SMTP id 006d021491bc7-66118924a21mr4165245eaf.54.1768778998885; Sun, 18 Jan 2026 15:29:58 -0800 (PST) Date: Sun, 18 Jan 2026 15:29:58 -0800 In-Reply-To: <696d4ffd.050a0220.3390f1.0024.GAE@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <696d6cf6.050a0220.3390f1.0031.GAE@google.com> Subject: Forwarded: Private message regarding: [syzbot] [wireless?] WARNING in drv_get_tsf (2) From: syzbot To: linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" For archival purposes, forwarding an incoming command email to linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com. *** Subject: Private message regarding: [syzbot] [wireless?] WARNING in drv_get= _tsf (2) Author: kapoorarnav43@gmail.com #syz test From 0cd0a5cff75a12d3cf1fa0675950ef0dcc647799 Mon Sep 17 00:00:00 2001 From: Arnav Kapoor Date: Mon, 19 Jan 2026 03:03:18 +0530 Subject: [PATCH] mac80211: Fix WARNING in drv_get_tsf debugfs access The debugfs tsf read function was calling drv_get_tsf() even when the interface was not registered with the driver, causing a WARN_ON to be triggered. This is inappropriate for debugfs access. Fix this by checking the IEEE80211_SDATA_IN_DRIVER flag in the debugfs read function and returning -1ULL directly when the interface is not in the driver, avoiding the warning. Reported-by: syzbot+15f88dfa580000@syzkaller.appspotmail.com Signed-off-by: Arnav Rawat --- net/mac80211/debugfs_netdev.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/net/mac80211/debugfs_netdev.c b/net/mac80211/debugfs_netdev.c index 30a5a978a..669e7c519 100644 --- a/net/mac80211/debugfs_netdev.c +++ b/net/mac80211/debugfs_netdev.c @@ -656,7 +656,10 @@ static ssize_t ieee80211_if_fmt_tsf( struct ieee80211_local *local =3D sdata->local; u64 tsf; =20 - tsf =3D drv_get_tsf(local, (struct ieee80211_sub_if_data *)sdata); + if (!(sdata->flags & IEEE80211_SDATA_IN_DRIVER)) + tsf =3D -1ULL; + else + tsf =3D drv_get_tsf(local, (struct ieee80211_sub_if_data=20 *)sdata); =20 return scnprintf(buf, buflen, "0x%016llx\n", (unsigned long long)=20 tsf); } --=20 2.43.0 On Monday, 19 January 2026 at 04:58:06 UTC+5:30 syzbot wrote: Hello,=20 syzbot tried to test the proposed patch but the build/boot failed:=20 failed to apply patch after dry run:=20 patching file net/netfilter/nf_conntrack_core.c=20 Hunk #1 succeeded at 1551 (offset -1 lines).=20 patching file net/netfilter/nf_conntrack_core.c=20 Hunk #1 FAILED at 1552.=20 1 out of 1 hunk FAILED -- saving rejects to file=20 net/netfilter/nf_conntrack_core.c.rej=20 patching file net/netfilter/nf_conntrack_core.c=20 Hunk #1 FAILED at 1552.=20 1 out of 1 hunk FAILED -- saving rejects to file=20 net/netfilter/nf_conntrack_core.c.rej=20 patching file net/netfilter/nf_conntrack_core.c=20 Hunk #1 FAILED at 1552.=20 1 out of 1 hunk FAILED -- saving rejects to file=20 net/netfilter/nf_conntrack_core.c.rej=20 patching file net/netfilter/nf_conntrack_core.c=20 Hunk #1 FAILED at 1552.=20 1 out of 1 hunk FAILED -- saving rejects to file=20 net/netfilter/nf_conntrack_core.c.rej=20 Tested on:=20 commit: e84d9601 Merge tag 'for-6.19-rc5-tag' of git://git.ker..=20 git tree: upstream=20 kernel config: https://syzkaller.appspot.com/x/.config?x=3Dae589cd0a6acd9be=20 dashboard link: https://syzkaller.appspot.com/bug?extid=3D2cecf0e829ae2219d= 419=20 compiler:=20 patch: https://syzkaller.appspot.com/x/patch.diff?x=3D112153fa580000