From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-io1-f71.google.com (mail-io1-f71.google.com [209.85.166.71]) (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 9B5F149644 for ; Wed, 25 Dec 2024 06:55:03 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.166.71 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1735109705; cv=none; b=Kqa40XlgZLUI3ZUfDxTcSn7WJj4rKvFBwou5XPM+o9SN526Z0ZH9WUxHC7UlKfJWwSbSx4RhKCzI6cyaNbUCUyDxc/pEMFBJ7ZWNI3ox7gBmkHFJsX7XaVm2WHSKIPMNYMSdMfaJtsU7B413RyoDT6At6v37wEpP7DDJd8Dz9eg= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1735109705; c=relaxed/simple; bh=vCtH0xKpkMLyYyOdDBDic+pLd6WKYQiYK6ZqajPoAa4=; h=MIME-Version:Date:In-Reply-To:Message-ID:Subject:From:To: Content-Type; b=QawNQszNzSBfL9TR81d7fEjX8ARZ22oC0OWFdgxgQ8GUmx7l/SqPGmGBGSMtOS9NnKFi6iZpNBds41+8tiLGNBTYb6iZ8OHsROTr4PTgVs8hRRNwPjFki7A44t4RkxMEjoRKPY4tyIjRiazGjChbBkhfNDXZVkkdx9zp813lsEI= 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=209.85.166.71 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-io1-f71.google.com with SMTP id ca18e2360f4ac-844d5c4a27fso1009673239f.0 for ; Tue, 24 Dec 2024 22:55:03 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1735109703; x=1735714503; 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=Ta082uJJhcNZbV4mjW5xLMJwbMmb81o4pqVkiCohDVw=; b=VWbd77ElHrxMnalGF4cWIgH0eWdznnLax6kSdPNVQTUm9Bv6yEHSfjFSQjSz6bUyuF ZnGXT7M1KhxXQF5naFSv3LVqLKk9o3K5M0ULzVg61C44BGLXHitkqMx3zbWRqWlQrASw lOFqWLGPI5SK/GezGL1MBGcDE/xSYwdybNbIasGKPybCHTw3CTzN8a7TNmEK6eAgJgO0 sTXZMV4Zw2rbTNfbrcxCZ322Sxj9N50kMP7ZNLoo28S2up0RQJ0YcOsjRBpThYAZNo8e So9GPnr95MMqK3FkUDQg7hkKVI5xtTkbb5+BG9fK4eLzSJWUmnNl/EhdybVzSILdsvnd sfZw== X-Forwarded-Encrypted: i=1; AJvYcCXkPNsN1UinRkd2ogi33LmzPGOA5NaxUs4PPb1JO/EwSB0JtFQyCWIK5thSVMAos4o1L6/bYa8=@vger.kernel.org X-Gm-Message-State: AOJu0YzE26rFTpsOifGBWfD9n0+8+44Jb1zzvtskBgaTb4Inxdc8qq/z aRELyYrzR2hCsoxUdnW25oDo5sGBTX4KMby7/NS1BQaJvzpMNH8RDAkiQFM5JQ1I5RBaz7999BY vFAfF2fArURyDMJ58fFkbYzXIcLHlK+X+N6IdzCO0kGZ38nIFnusfSQk= X-Google-Smtp-Source: AGHT+IGo/mB++g9H0Iiix3YzJTvrTK6q3jZQ68x3nvhK+kwg0PaPNtGL6q+kyKROY1b4wvaDfpyggNUdRK7wtTg93xxG8D6obP0W Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6e02:20e9:b0:3a3:4175:79da with SMTP id e9e14a558f8ab-3c2d2d5164bmr159902725ab.13.1735109702902; Tue, 24 Dec 2024 22:55:02 -0800 (PST) Date: Tue, 24 Dec 2024 22:55:02 -0800 In-Reply-To: <000000000000e7765006072e9591@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <676bac46.050a0220.2f3838.02c0.GAE@google.com> Subject: Re: [syzbot] [bpf?] [trace?] possible deadlock in task_fork_fair From: syzbot To: andrii@kernel.org, ast@kernel.org, bpf@vger.kernel.org, brauner@kernel.org, daniel@iogearbox.net, elic@nvidia.com, haoluo@google.com, jakub@cloudflare.com, jasowang@redhat.com, john.fastabend@gmail.com, jolsa@kernel.org, kpsingh@kernel.org, linux-kernel@vger.kernel.org, linux-trace-kernel@vger.kernel.org, martin.lau@linux.dev, mathieu.desnoyers@efficios.com, mhiramat@kernel.org, mst@redhat.com, netdev@vger.kernel.org, parav@nvidia.com, rostedt@goodmis.org, sdf@google.com, song@kernel.org, syzkaller-bugs@googlegroups.com, tglx@linutronix.de, yonghong.song@linux.dev Content-Type: text/plain; charset="UTF-8" syzbot suspects this issue was fixed by commit: commit ff91059932401894e6c86341915615c5eb0eca48 Author: Jakub Sitnicki Date: Tue Apr 2 10:46:21 2024 +0000 bpf, sockmap: Prevent lock inversion deadlock in map delete elem bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=16e922f8580000 start commit: fe46a7dd189e Merge tag 'sound-6.9-rc1' of git://git.kernel.. git tree: upstream kernel config: https://syzkaller.appspot.com/x/.config?x=aef2a55903e5791c dashboard link: https://syzkaller.appspot.com/bug?extid=1a93ee5d329e97cfbaff syz repro: https://syzkaller.appspot.com/x/repro.syz?x=128b2d33180000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=10fe01eb180000 If the result looks correct, please mark the issue as fixed by replying with: #syz fix: bpf, sockmap: Prevent lock inversion deadlock in map delete elem For information about bisection process see: https://goo.gl/tpsmEJ#bisection