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 X-Spam-Level: X-Spam-Status: No, score=-5.7 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, FROM_LOCAL_HEX,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, MENTIONS_GIT_HOSTING,SPF_HELO_NONE,SPF_PASS,T_DKIMWL_WL_HIGH,URIBL_BLOCKED autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id B5C7AC28CC5 for ; Sat, 8 Jun 2019 11:22:23 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 83B1120449 for ; Sat, 8 Jun 2019 11:22:23 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="D6ur7bi8" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 83B1120449 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=syzkaller.appspotmail.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender:Content-Type: Content-Transfer-Encoding:List-Subscribe:List-Help:List-Post:List-Archive: List-Unsubscribe:List-Id:To:From:Subject:Message-ID:In-Reply-To:Date: MIME-Version:Reply-To:Cc:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:References: List-Owner; bh=XgUxCJCyDMEG8bU1hymWWNhv9aaNq1KliNu1wZk0Au8=; b=D6ur7bi8gENKPM hWUuc/ZKN3IW7bxtLEy2CIz4sNO7LwgKgVOow/P5v0hnzDYGyCIDVaSKgcIknkQh26mXJvDJcq9Xp Cdec5nEyr2jmJUNLPztZBtLNLqWTkGlEwnfm9f93YBGKApGkQHgbDIjiYDv2S6fGloYzue+qAESzY bFCucmItzwhwDIEJpgLi4iaTGF8gPkcXAx9Org8yZS+MmGcJm6WjqevG/q3j95gYnYufne07pTfvN xUyUA62VgwBxxl+NkrUpbYB7IXShEyCYK4jpSwwsjz887oDuAe2Dqu0fNqJIgUAlqleaDkzyIZy5o t/DWsczUb4jdrYgtS62g==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92 #3 (Red Hat Linux)) id 1hZZQO-0001CX-Ce; Sat, 08 Jun 2019 11:22:16 +0000 Received: from mail-io1-f70.google.com ([209.85.166.70]) by bombadil.infradead.org with esmtps (Exim 4.92 #3 (Red Hat Linux)) id 1hZZQH-00013M-1H for linux-arm-kernel@lists.infradead.org; Sat, 08 Jun 2019 11:22:10 +0000 Received: by mail-io1-f70.google.com with SMTP id k21so3330028ioj.3 for ; Sat, 08 Jun 2019 04:22:07 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:date:in-reply-to:message-id:subject :from:to; bh=hVoG57mCN8NOasXfbKFhxicqTT/xW4k6vglaIu7Gsr8=; b=liKoqQI8iEnIpPhZSJTryXeIpdsK152fniItAjdf5r4nHlA1QLhlA7Z3v2ywVKr5Qh eoBFH9OKxhqaVRf1wHF2RfsrvwccJXRRE/KIYSdBF74J6K8eCbwjriT2sKVicBGXGTtt gkQXT0H0nMxzcj1aYCoPwqLS3iLSP5JykLd0oIHMA2X4JlsYSZg56yRh2yc/0D/KCkqp 7THNJFxkmVhEgKALoY8Rj5ERbelXoG0DWKMrT7Czvg7krFC/Myx2yDV+gIvbCXo+roZ6 UA48zfSNoCwGzKTgulBvSwMnLzPVPj4am9CyMBmr2BW6Fm1virJKbFfwzK+4wwJOvtRX Q0YQ== X-Gm-Message-State: APjAAAUfRwv8ou9aRTT8nUDvbqMh5N5n6wDdOIlsYEkxOhGOEAoQZ7tR Vo01G5KUuLaYL/ERTHStL7bNfAiOw4GJPnAjJQLWUj1gfq7M X-Google-Smtp-Source: APXvYqxR+yDqE0sbsVS8kE/JcX0C63g/G7rVLFT6sEkllG3CgH0tCwhH0z0uaNRie7Uk/8nBz/cdYlmm5MngD6hxJdcYk5neIjx8 MIME-Version: 1.0 X-Received: by 2002:a02:5489:: with SMTP id t131mr36685651jaa.70.1559992926211; Sat, 08 Jun 2019 04:22:06 -0700 (PDT) Date: Sat, 08 Jun 2019 04:22:06 -0700 In-Reply-To: <000000000000e92d1805711f5552@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000381684058ace28e5@google.com> Subject: Re: WARNING in bpf_jit_free From: syzbot To: airlied@linux.ie, ast@kernel.org, bpf@vger.kernel.org, daniel@ffwll.ch, daniel@iogearbox.net, davem@davemloft.net, dri-devel@lists.freedesktop.org, hawk@kernel.org, jakub.kicinski@netronome.com, john.fastabend@gmail.com, kafai@fb.com, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, maxime.ripard@bootlin.com, netdev@vger.kernel.org, paul.kocialkowski@bootlin.com, songliubraving@fb.com, syzkaller-bugs@googlegroups.com, wens@csie.org, xdp-newbies@vger.kernel.org, yhs@fb.com X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190608_042209_114990_7C49FA54 X-CRM114-Status: UNSURE ( 6.02 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset="us-ascii"; Format="flowed"; DelSp="yes" Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org syzbot has found a reproducer for the following crash on: HEAD commit: 79c3ba32 Merge tag 'drm-fixes-2019-06-07-1' of git://anong.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=1201b971a00000 kernel config: https://syzkaller.appspot.com/x/.config?x=60564cb52ab29d5b dashboard link: https://syzkaller.appspot.com/bug?extid=2ff1e7cb738fd3c41113 compiler: gcc (GCC) 9.0.0 20181231 (experimental) syz repro: https://syzkaller.appspot.com/x/repro.syz?x=14a3bf51a00000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=120d19f2a00000 The bug was bisected to: commit 0fff724a33917ac581b5825375d0b57affedee76 Author: Paul Kocialkowski Date: Fri Jan 18 14:51:13 2019 +0000 drm/sun4i: backend: Use explicit fourcc helpers for packed YUV422 check bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=1467550f200000 final crash: https://syzkaller.appspot.com/x/report.txt?x=1667550f200000 console output: https://syzkaller.appspot.com/x/log.txt?x=1267550f200000 IMPORTANT: if you fix the bug, please add the following tag to the commit: Reported-by: syzbot+2ff1e7cb738fd3c41113@syzkaller.appspotmail.com Fixes: 0fff724a3391 ("drm/sun4i: backend: Use explicit fourcc helpers for packed YUV422 check") WARNING: CPU: 0 PID: 8951 at kernel/bpf/core.c:851 bpf_jit_free+0x157/0x1b0 Kernel panic - not syncing: panic_on_warn set ... CPU: 0 PID: 8951 Comm: kworker/0:0 Not tainted 5.2.0-rc3+ #23 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: events bpf_prog_free_deferred Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x172/0x1f0 lib/dump_stack.c:113 panic+0x2cb/0x744 kernel/panic.c:219 __warn.cold+0x20/0x4d kernel/panic.c:576 report_bug+0x263/0x2b0 lib/bug.c:186 fixup_bug arch/x86/kernel/traps.c:179 [inline] fixup_bug arch/x86/kernel/traps.c:174 [inline] do_error_trap+0x11b/0x200 arch/x86/kernel/traps.c:272 do_invalid_op+0x37/0x50 arch/x86/kernel/traps.c:291 invalid_op+0x14/0x20 arch/x86/entry/entry_64.S:986 RIP: 0010:bpf_jit_free+0x157/0x1b0 Code: 00 fc ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 75 5d 48 b8 00 02 00 00 00 00 ad de 48 39 43 70 0f 84 05 ff ff ff e8 f9 b5 f4 ff <0f> 0b e9 f9 fe ff ff e8 bd 53 2d 00 e9 d9 fe ff ff 48 89 7d e0 e8 RSP: 0018:ffff88808886fcb0 EFLAGS: 00010293 RAX: ffff88808cb6c480 RBX: ffff88809051d280 RCX: ffffffff817ae68d RDX: 0000000000000000 RSI: ffffffff817bf0f7 RDI: ffff88809051d2f0 RBP: ffff88808886fcd0 R08: 1ffffffff14ccaa8 R09: fffffbfff14ccaa9 R10: fffffbfff14ccaa8 R11: ffffffff8a665547 R12: ffffc90001925000 R13: ffff88809051d2e8 R14: ffff8880a0e43900 R15: ffff8880ae834840 bpf_prog_free_deferred+0x27a/0x350 kernel/bpf/core.c:1984 process_one_work+0x989/0x1790 kernel/workqueue.c:2269 worker_thread+0x98/0xe40 kernel/workqueue.c:2415 kthread+0x354/0x420 kernel/kthread.c:255 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352 Kernel Offset: disabled Rebooting in 86400 seconds.. _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel