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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 22345C43334 for ; Thu, 21 Jul 2022 08:16:24 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231972AbiGUIQX (ORCPT ); Thu, 21 Jul 2022 04:16:23 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:47654 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232016AbiGUIQW (ORCPT ); Thu, 21 Jul 2022 04:16:22 -0400 Received: from mail-il1-f197.google.com (mail-il1-f197.google.com [209.85.166.197]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 90DA67D1FE for ; Thu, 21 Jul 2022 01:16:21 -0700 (PDT) Received: by mail-il1-f197.google.com with SMTP id q15-20020a056e0220ef00b002dcf06b188fso644733ilv.6 for ; Thu, 21 Jul 2022 01:16:21 -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:message-id:subject:from:to; bh=XiflHrkGhMohfp90y6rm8XzN9ejlCNoFswsBGQ/pU/U=; b=OkkuhsY8k5LfXtLz8almRiQ+rM7qoITQ3xoeC6Y83ypMn7s/+h8UPhklNZuO5XFgVu spAiC2GQL/mbJRzYyixPsx6ysZRpO2nV9Nvo8EFmfRGt1TQEnBdN7RHUJwVZlRBYmMs4 pa3vnOBUlps1eGwR6R6O/zQ0gZrHYgCUnBXIV8WYNGY2vxNVXTB1mBgHt+KeJm2votbl zoDYbnL9ess1PGU0U59CJHeWoQpzgek5zvs56lsQJxzGwAqMNJewE8A2NIzWQNI+HxhF PZuPrDPEU2H8x04TRfSWPrzOrZgpCEDHHmt52RtxOvQj5Aa7tIxEdEh5zTdOPGumBfQy vYrA== X-Gm-Message-State: AJIora/qE6m5gCvoFF2pXXCIhkAVZBE+hKWJc0QuRCN52vFi+1yH4EZf T3pxuPTnDJiMYKh5HdjLtfnZNcI4jhmBP+lk1tRLjEqRfwV/ X-Google-Smtp-Source: AGRyM1uRrMW3mfids6Sst+N2N2tZanU9cElVjImRKGVG39qcdE0cDece+SGIR9+7ZcJQeC7ZuGEGQblaXekZAhQ4tDDbiJSvbChG MIME-Version: 1.0 X-Received: by 2002:a05:6638:2203:b0:33e:b93f:5882 with SMTP id l3-20020a056638220300b0033eb93f5882mr21645815jas.66.1658391380915; Thu, 21 Jul 2022 01:16:20 -0700 (PDT) Date: Thu, 21 Jul 2022 01:16:20 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <00000000000028796b05e44c55e9@google.com> Subject: [syzbot] WARNING in ext2_get_group_desc From: syzbot To: jack@suse.com, linux-ext4@vger.kernel.org, linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-ext4@vger.kernel.org Hello, syzbot found the following issue on: HEAD commit: c658cabbfd32 Merge tag 's390-5.19-6' of git://git.kernel.o.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=149c07d0080000 kernel config: https://syzkaller.appspot.com/x/.config?x=cf350e66d4493550 dashboard link: https://syzkaller.appspot.com/bug?extid=d273f7d7f58afd93be48 compiler: arm-linux-gnueabi-gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2 userspace arch: arm Unfortunately, I don't have any reproducer for this issue yet. IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+d273f7d7f58afd93be48@syzkaller.appspotmail.com loop1: detected capacity change from 0 to 20 ------------[ cut here ]------------ WARNING: CPU: 1 PID: 3999 at fs/ext2/balloc.c:51 ext2_get_group_desc+0x88/0xb4 fs/ext2/balloc.c:51 block_group >= groups_count - block_group = 1, groups_count = 1 Modules linked in: Kernel panic - not syncing: panic_on_warn set ... CPU: 1 PID: 3999 Comm: syz-executor.1 Not tainted 5.19.0-rc6-syzkaller #0 Hardware name: ARM-Versatile Express Backtrace: [<816f379c>] (dump_backtrace) from [<816f3acc>] (show_stack+0x18/0x1c arch/arm/kernel/traps.c:253) r7:81d72500 r6:82422fec r5:60000093 r4:81d80550 [<816f3ab4>] (show_stack) from [<816fc3f8>] (__dump_stack lib/dump_stack.c:88 [inline]) [<816f3ab4>] (show_stack) from [<816fc3f8>] (dump_stack_lvl+0x48/0x54 lib/dump_stack.c:106) [<816fc3b0>] (dump_stack_lvl) from [<816fc41c>] (dump_stack+0x18/0x1c lib/dump_stack.c:113) r5:00000000 r4:82642d14 [<816fc404>] (dump_stack) from [<816f4668>] (panic+0x11c/0x360 kernel/panic.c:274) [<816f454c>] (panic) from [<80242a2c>] (__warn+0x98/0x198 kernel/panic.c:623) r3:00000001 r2:00000000 r1:00000000 r0:81d72500 r7:806112e0 [<80242994>] (__warn) from [<816f4948>] (warn_slowpath_fmt+0x9c/0xd4 kernel/panic.c:653) r8:00000009 r7:806112e0 r6:00000033 r5:81db0ac4 r4:81db0a80 [<816f48b0>] (warn_slowpath_fmt) from [<806112e0>] (ext2_get_group_desc+0x88/0xb4 fs/ext2/balloc.c:51) r8:00000001 r7:851d1c00 r6:ee24dde0 r5:851d1c00 r4:00000000 [<80611258>] (ext2_get_group_desc) from [<80615118>] (ext2_get_inode+0x94/0x134 fs/ext2/inode.c:1345) r4:00000002 [<80615084>] (ext2_get_inode) from [<80617194>] (ext2_iget+0x84/0x438 fs/ext2/inode.c:1425) r9:88485670 r8:00000000 r7:851d1c00 r6:00000002 r5:00000000 r4:8497b6f8 [<80617110>] (ext2_iget) from [<8061a940>] (ext2_fill_super+0xb30/0xe14 fs/ext2/super.c:1162) r8:00000000 r7:84af7600 r6:88307400 r5:851d1c00 r4:88485600 [<80619e10>] (ext2_fill_super) from [<8049e2a0>] (mount_bdev+0x178/0x1a4 fs/super.c:1367) r10:852b4000 r9:83917dbc r8:00000083 r7:852b4000 r6:00000000 r5:851d1c00 r4:83917b80 [<8049e128>] (mount_bdev) from [<806189ac>] (ext2_mount+0x20/0x28 fs/ext2/super.c:1465) r9:86184b80 r8:86184200 r7:ee24df6c r6:00000020 r5:8061898c r4:85352f00 [<8061898c>] (ext2_mount) from [<804de934>] (legacy_get_tree+0x2c/0x50 fs/fs_context.c:610) [<804de908>] (legacy_get_tree) from [<8049c85c>] (vfs_get_tree+0x2c/0x108 fs/super.c:1497) r5:85352f00 r4:85352f00 [<8049c830>] (vfs_get_tree) from [<804c5818>] (do_new_mount fs/namespace.c:3040 [inline]) [<8049c830>] (vfs_get_tree) from [<804c5818>] (path_mount+0x3e8/0xabc fs/namespace.c:3370) r6:00000020 r5:00000000 r4:85352f00 [<804c5430>] (path_mount) from [<804c6428>] (do_mount fs/namespace.c:3383 [inline]) [<804c5430>] (path_mount) from [<804c6428>] (__do_sys_mount fs/namespace.c:3591 [inline]) [<804c5430>] (path_mount) from [<804c6428>] (sys_mount+0x118/0x220 fs/namespace.c:3568) r10:00000000 r9:76f05ef8 r8:00000000 r7:00000000 r6:852b4000 r5:86184200 r4:86184b80 [<804c6310>] (sys_mount) from [<80200060>] (ret_fast_syscall+0x0/0x1c arch/arm/mm/proc-v7.S:64) Exception stack(0xee24dfa8 to 0xee24dff0) dfa0: 76f05ef8 20000000 76f05eb8 20000240 20000000 00000000 dfc0: 76f05ef8 20000000 20000340 00000015 76f05eb8 00000000 76f05eb8 00000000 dfe0: 000862b8 76f05e70 00016a48 0004d500 r10:00000015 r9:84f38bc0 r8:80200288 r7:00000015 r6:20000340 r5:20000000 r4:76f05ef8 Rebooting in 86400 seconds.. --- This report is generated by a bot. 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