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 3A4B7C77B75 for ; Mon, 8 May 2023 10:59:59 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235401AbjEHK7z (ORCPT ); Mon, 8 May 2023 06:59:55 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:33340 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235427AbjEHK7U (ORCPT ); Mon, 8 May 2023 06:59:20 -0400 Received: from mail-io1-f78.google.com (mail-io1-f78.google.com [209.85.166.78]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 1613429C8A for ; Mon, 8 May 2023 03:57:57 -0700 (PDT) Received: by mail-io1-f78.google.com with SMTP id ca18e2360f4ac-76c27782e30so166236139f.3 for ; Mon, 08 May 2023 03:57:57 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1683543469; x=1686135469; 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=z4qQuGB5Gd1At6RmxvPzh/+T+MZCmyfXc4a+BLM5Q9w=; b=gjJwcXirSpz4UlQ/TYR2X9TyZxEnDGE0AYuBgTtkViGHRsV+lv/dplCLKLEuYftfU+ W5KVWkxWSjUMHAjcTX9QpmBr8VhLudp/mvT/COXT7B9wM76TNN2wbP4Ivm2EBqW0awym DXmiEs+K5KlUDI1XgPp6WprdCbt5LDrIccMH65l2YQWxwS2qwf0AHnaOABR5ms/TrW3Q j2J9a1Mkwg+ml103XWiOUSh1/Q7BvKIC4fyk/0lhgSgj2IG0aBmiXtViJHw3/BeTX1yL YgieZkd68dh0HThkJC93nSrDswC90zqZKdKr3dID0n2OiNK4U4awJ6a/SgTLYiUjpnwT dAjA== X-Gm-Message-State: AC+VfDx3HaeZgJpMib01+xkTkp/FNWCATWdFHOS76sByt6HGvOjsZLme fAu3ercSJO7agsoIKaXZJ3m4yDFeRRYEcv1MgDJFzjYLrfCB X-Google-Smtp-Source: ACHHUZ7hRUvohGuXcxsd/2ky5NLQqnBo134yJZYBac/reMymj4KJ2Q+G6mM31hEWJ78rrVBaNvo2gykcXUW0yO4C6kwJ93Y7EVvB MIME-Version: 1.0 X-Received: by 2002:a02:93c7:0:b0:414:401d:b69a with SMTP id z65-20020a0293c7000000b00414401db69amr5076647jah.3.1683543469395; Mon, 08 May 2023 03:57:49 -0700 (PDT) Date: Mon, 08 May 2023 03:57:49 -0700 In-Reply-To: <0000000000002e17d105f02be919@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000751a2d05fb2c824a@google.com> Subject: Re: [syzbot] [ext4?] WARNING in print_tainted From: syzbot To: adilger.kernel@dilger.ca, ast@kernel.org, bpf@vger.kernel.org, daniel@iogearbox.net, davem@davemloft.net, edumazet@google.com, gregkh@linuxfoundation.org, hawk@kernel.org, john.fastabend@gmail.com, kernel@pengutronix.de, kuba@kernel.org, linux-can@vger.kernel.org, linux-ext4@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, mkl@pengutronix.de, netdev@vger.kernel.org, pabeni@redhat.com, patches@lists.linux.dev, sashal@kernel.org, socketcan@hartkopp.net, stable-commits@vger.kernel.org, stable@vger.kernel.org, syzkaller-bugs@googlegroups.com, tytso@mit.edu Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-can@vger.kernel.org syzbot has found a reproducer for the following issue on: HEAD commit: 457391b03803 Linux 6.3 git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=118e0b90280000 kernel config: https://syzkaller.appspot.com/x/.config?x=385e197a58ca4afe dashboard link: https://syzkaller.appspot.com/bug?extid=5aed6c3aaba661f5b917 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 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=178650b8280000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=1646075a280000 Downloadable assets: disk image (non-bootable): https://storage.googleapis.com/syzbot-assets/c35b5b2731d2/non_bootable_disk-457391b0.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/2a1bf3bafeb6/vmlinux-457391b0.xz kernel image: https://storage.googleapis.com/syzbot-assets/21f1e3b4a5a9/zImage-457391b0.xz mounted in repro: https://storage.googleapis.com/syzbot-assets/bd66e85f728b/mount_0.gz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+5aed6c3aaba661f5b917@syzkaller.appspotmail.com EXT4-fs (loop0): 1 truncate cleaned up EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 without journal. Quota mode: writeback. ------------[ cut here ]------------ WARNING: CPU: 0 PID: 2947 at mm/slab_common.c:935 free_large_kmalloc+0x94/0xd0 mm/slab_common.c:935 Modules linked in: Kernel panic - not syncing: kernel: panic_on_warn set ... CPU: 0 PID: 2947 Comm: syz-executor216 Not tainted 6.3.0-syzkaller #0 Hardware name: ARM-Versatile Express Backtrace: [<817b2528>] (dump_backtrace) from [<817b261c>] (show_stack+0x18/0x1c arch/arm/kernel/traps.c:256) r7:81d81ac0 r6:82422c04 r5:60000093 r4:81d901cc [<817b2604>] (show_stack) from [<817cec84>] (__dump_stack lib/dump_stack.c:88 [inline]) [<817b2604>] (show_stack) from [<817cec84>] (dump_stack_lvl+0x48/0x54 lib/dump_stack.c:106) [<817cec3c>] (dump_stack_lvl) from [<817ceca8>] (dump_stack+0x18/0x1c lib/dump_stack.c:113) r5:00000000 r4:8264dd14 [<817cec90>] (dump_stack) from [<817b3110>] (panic+0x11c/0x36c kernel/panic.c:340) [<817b2ff4>] (panic) from [<802422ec>] (print_tainted+0x0/0xa0 kernel/panic.c:236) r3:8240c488 r2:00000001 r1:81d79fcc r0:81d81ac0 r7:80436a2c [<80242268>] (check_panic_on_warn) from [<802424e0>] (__warn+0x7c/0x180 kernel/panic.c:673) [<80242464>] (__warn) from [<802426bc>] (warn_slowpath_fmt+0xd8/0x1d8 kernel/panic.c:697) r8:00000009 r7:000003a7 r6:81da3124 r5:8240c954 r4:822ab6bc [<802425e8>] (warn_slowpath_fmt) from [<80436a2c>] (free_large_kmalloc+0x94/0xd0 mm/slab_common.c:935) r10:823e75a4 r9:00000704 r8:8436d7c0 r7:825dfc70 r6:823e75a4 r5:dde49c7c r4:dde49c7c [<80436998>] (free_large_kmalloc) from [<80436bb0>] (kfree+0x148/0x14c mm/slab_common.c:1013) r7:8436d880 r6:804292ac r5:dde49c7c r4:823e75a4 [<80436a68>] (kfree) from [<804292ac>] (kvfree+0x2c/0x30 mm/util.c:649) r7:8436d880 r6:8436d700 r5:00000400 r4:823e75a4 [<80429280>] (kvfree) from [<80619f90>] (ext4_xattr_move_to_block fs/ext4/xattr.c:2680 [inline]) [<80429280>] (kvfree) from [<80619f90>] (ext4_xattr_make_inode_space fs/ext4/xattr.c:2743 [inline]) [<80429280>] (kvfree) from [<80619f90>] (ext4_expand_extra_isize_ea+0x558/0x808 fs/ext4/xattr.c:2835) r5:00000400 r4:823e75a4 [<80619a38>] (ext4_expand_extra_isize_ea) from [<805c514c>] (__ext4_expand_extra_isize+0xdc/0x148 fs/ext4/inode.c:5960) r10:8455e368 r9:8455e360 r8:00000001 r7:8455e5e4 r6:823e7500 r5:8455e3e8 r4:00000040 [<805c5070>] (__ext4_expand_extra_isize) from [<805cc188>] (ext4_try_to_expand_extra_isize fs/ext4/inode.c:6003 [inline]) [<805c5070>] (__ext4_expand_extra_isize) from [<805cc188>] (__ext4_mark_inode_dirty+0x158/0x270 fs/ext4/inode.c:6081) r8:00000040 r7:00000cb7 r6:df969df4 r5:00000001 r4:8455e3e8 [<805cc030>] (__ext4_mark_inode_dirty) from [<805ee79c>] (__ext4_unlink+0x2e0/0x370 fs/ext4/namei.c:3255) r10:df969e58 r9:82c9ac50 r8:00000000 r7:836ee3c0 r6:00000001 r5:8455e3e8 r4:8455f0a8 [<805ee4bc>] (__ext4_unlink) from [<805ee980>] (ext4_unlink+0x154/0x1e4 fs/ext4/namei.c:3298) r10:82c9ac38 r9:8455f130 r8:df969f3c r7:8455f0a8 r6:82c9ac38 r5:8455e3e8 r4:00000000 [<805ee82c>] (ext4_unlink) from [<804cc41c>] (vfs_unlink+0x13c/0x2e0 fs/namei.c:4250) r7:8455f0a8 r6:8455e3e8 r5:82c9ac38 r4:00000000 [<804cc2e0>] (vfs_unlink) from [<804d0fa8>] (do_unlinkat+0x198/0x2b4 fs/namei.c:4316) r9:df969f38 r8:00000003 r7:8290b000 r6:00000000 r5:8455f0a8 r4:00000000 [<804d0e10>] (do_unlinkat) from [<804d10fc>] (__do_sys_unlinkat fs/namei.c:4359 [inline]) [<804d0e10>] (do_unlinkat) from [<804d10fc>] (sys_unlinkat+0x38/0x5c fs/namei.c:4352) r10:00000148 r9:831bae00 r8:80200288 r7:00000148 r6:00000000 r5:00000000 r4:00000003 [<804d10c4>] (sys_unlinkat) from [<80200060>] (ret_fast_syscall+0x0/0x1c arch/arm/mm/proc-v7.S:66) Exception stack(0xdf969fa8 to 0xdf969ff0) 9fa0: 00000000 00000000 00000003 20000000 00000000 00001015 9fc0: 00000000 00000000 00000000 00000148 00000000 200002a2 20000276 00000000 9fe0: 7ecdec50 7ecdec40 0001085c 0002bb80 r5:00000000 r4:00000000 Rebooting in 86400 seconds.. --- If you want syzbot to run the reproducer, reply with: #syz test: git://repo/address.git branch-or-commit-hash If you attach or paste a git patch, syzbot will apply it before testing.