From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id AC7D826BD8B for ; Tue, 11 Feb 2025 07:35:01 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1739259301; cv=none; b=VrbsjXTgR5BAF+5DiKv2fzW3qTcs3FnPe4kmbus8ShERezDkYDMG/LIjts94xqjgyZTZtUG/aunqLuuC0KMv6+6owH20b4mtNWP/j+Butw+mdSlsaO0uDpvAzNnbro+vak6rww+cAhgqhNGRU38ze2LD/I7oN82dcs6Z1BEMZco= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1739259301; c=relaxed/simple; bh=VXx9XRWZ6SNYz5xhlFIrjMnEQJYZHXc0ZThOD1Vd9Vk=; h=Message-ID:Date:MIME-Version:Cc:Subject:To:References:From: In-Reply-To:Content-Type; b=EKIa549wVBezKzmiwA1avZZmuADcrJQVl5Ynt444XkpTeQs7CWhI8JAhkwcsU/pb1boBKfSNBX+Y9BU+M6sfSH9A2vp1+dmi25H28mnaJimesoVjBXz7fgeaeV5KDeaPexWCsbtHjLGm3sIvIcIlO2V/Ln1KOO10LUyqiXZsicE= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=mSws1pXM; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="mSws1pXM" Received: by smtp.kernel.org (Postfix) with ESMTPSA id DD8C5C4CEE4; Tue, 11 Feb 2025 07:34:59 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1739259301; bh=VXx9XRWZ6SNYz5xhlFIrjMnEQJYZHXc0ZThOD1Vd9Vk=; h=Date:Cc:Subject:To:References:From:In-Reply-To:From; b=mSws1pXM8HuNea4h20NW9LtLpCpG/nqwhR2CDeiobmF7BqY9i6ulITyjAKiolQj3j Ifi8YuwLEIbKmfKo8J7GT/PgfT47g2sgB9wnq8tOKVgIi/Gy5d8/N2HwEWyOSWAwkw EbqHQWa5Q9/VfY3X+t6lF/7mxXV87Zs0fvIieF3SVEkGReJENTC2EisD6NCxAgCy32 q00XlfZr2l/HBVNeLFUwgNWwC3ZvJD8LlFTOj+19knyBtr+auTIVnn90mE3TYA49dD 1WPwEJ41gH4akGPbFCUWmmRL4Emj+GFnXwP6v9gifswfdcPn5o0aCILzu820EzETO6 f9m/fli3n58sw== Message-ID: Date: Tue, 11 Feb 2025 15:34:58 +0800 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Cc: chao@kernel.org Subject: Re: [syzbot] [f2fs?] WARNING in f2fs_unlink To: syzbot , jaegeuk@kernel.org, linux-f2fs-devel@lists.sourceforge.net, linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com, yuchao0@huawei.com References: <6740a00c.050a0220.363a1b.0143.GAE@google.com> Content-Language: en-US From: Chao Yu In-Reply-To: <6740a00c.050a0220.363a1b.0143.GAE@google.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit #syz fix: f2fs: add check for deleted inode On 11/22/24 23:15, syzbot wrote: > Hello, > > syzbot found the following issue on: > > HEAD commit: 43fb83c17ba2 Merge tag 'soc-arm-6.13' of git://git.kernel... > git tree: upstream > console+strace: https://syzkaller.appspot.com/x/log.txt?x=170f5930580000 > kernel config: https://syzkaller.appspot.com/x/.config?x=e796b1bf154f93a7 > dashboard link: https://syzkaller.appspot.com/bug?extid=b01a36acd7007e273a83 > compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 > syz repro: https://syzkaller.appspot.com/x/repro.syz?x=1213fae8580000 > C reproducer: https://syzkaller.appspot.com/x/repro.c?x=12b3a75f980000 > > Downloadable assets: > disk image: https://storage.googleapis.com/syzbot-assets/c93bb9014475/disk-43fb83c1.raw.xz > vmlinux: https://storage.googleapis.com/syzbot-assets/8116200f91e3/vmlinux-43fb83c1.xz > kernel image: https://storage.googleapis.com/syzbot-assets/d3a982ec74b0/bzImage-43fb83c1.xz > mounted in repro: https://storage.googleapis.com/syzbot-assets/43c22dda0085/mount_0.gz > > The issue was bisected to: > > commit 4c8ff7095bef64fc47e996a938f7d57f9e077da3 > Author: Chao Yu > Date: Fri Nov 1 10:07:14 2019 +0000 > > f2fs: support data compression > > bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=101e5b78580000 > final oops: https://syzkaller.appspot.com/x/report.txt?x=121e5b78580000 > console output: https://syzkaller.appspot.com/x/log.txt?x=141e5b78580000 > > IMPORTANT: if you fix the issue, please add the following tag to the commit: > Reported-by: syzbot+b01a36acd7007e273a83@syzkaller.appspotmail.com > Fixes: 4c8ff7095bef ("f2fs: support data compression") > > F2FS-fs (loop0): Found nat_bits in checkpoint > F2FS-fs (loop0): Mounted with checkpoint version = 48b305e4 > ------------[ cut here ]------------ > WARNING: CPU: 0 PID: 5835 at fs/inode.c:407 drop_nlink+0xc4/0x110 fs/inode.c:407 > Modules linked in: > CPU: 0 UID: 0 PID: 5835 Comm: syz-executor152 Not tainted 6.12.0-syzkaller-03657-g43fb83c17ba2 #0 > Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/30/2024 > RIP: 0010:drop_nlink+0xc4/0x110 fs/inode.c:407 > Code: bb 70 07 00 00 be 08 00 00 00 e8 07 df e5 ff f0 48 ff 83 70 07 00 00 5b 41 5c 41 5e 41 5f 5d c3 cc cc cc cc e8 ed e9 7e ff 90 <0f> 0b 90 eb 83 44 89 e1 80 e1 07 80 c1 03 38 c1 0f 8c 5c ff ff ff > RSP: 0018:ffffc90003cafb98 EFLAGS: 00010293 > RAX: ffffffff82160e93 RBX: 1ffff1100e63e009 RCX: ffff888035573c00 > RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 > RBP: 0000000000000000 R08: ffffffff82160e13 R09: 1ffffffff203969e > R10: dffffc0000000000 R11: fffffbfff203969f R12: ffff8880731f0048 > R13: dffffc0000000000 R14: ffff8880731f0000 R15: dffffc0000000000 > FS: 0000555576140380(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000 > CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 > CR2: 000000000066c7e0 CR3: 00000000758b4000 CR4: 00000000003526f0 > DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 > DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 > Call Trace: > > f2fs_i_links_write fs/f2fs/f2fs.h:3127 [inline] > f2fs_drop_nlink+0xd6/0x380 fs/f2fs/dir.c:822 > f2fs_unlink+0x47f/0x960 fs/f2fs/namei.c:572 > vfs_unlink+0x365/0x650 fs/namei.c:4523 > do_unlinkat+0x4ae/0x830 fs/namei.c:4587 > __do_sys_unlinkat fs/namei.c:4630 [inline] > __se_sys_unlinkat fs/namei.c:4623 [inline] > __x64_sys_unlinkat+0xcc/0xf0 fs/namei.c:4623 > do_syscall_x64 arch/x86/entry/common.c:52 [inline] > do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 > entry_SYSCALL_64_after_hwframe+0x77/0x7f > RIP: 0033:0x7f71e4b355f9 > Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 61 17 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 > RSP: 002b:00007ffed28a90b8 EFLAGS: 00000246 ORIG_RAX: 0000000000000107 > RAX: ffffffffffffffda RBX: 00007ffed28a9298 RCX: 00007f71e4b355f9 > RDX: 0000000000000000 RSI: 0000000020000380 RDI: 00000000ffffff9c > RBP: 00007f71e4bb8610 R08: 00000000000105b7 R09: 0000000000000000 > R10: 00007ffed28a8f80 R11: 0000000000000246 R12: 0000000000000001 > R13: 00007ffed28a9288 R14: 0000000000000001 R15: 0000000000000001 > > > > --- > This report is generated by a bot. It may contain errors. > See https://goo.gl/tpsmEJ for more information about syzbot. > syzbot engineers can be reached at syzkaller@googlegroups.com. > > syzbot will keep track of this issue. See: > https://goo.gl/tpsmEJ#status for how to communicate with syzbot. > For information about bisection process see: https://goo.gl/tpsmEJ#bisection > > If the report is already addressed, let syzbot know by replying with: > #syz fix: exact-commit-title > > 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. > > If you want to overwrite report's subsystems, reply with: > #syz set subsystems: new-subsystem > (See the list of subsystem names on the web dashboard) > > If the report is a duplicate of another one, reply with: > #syz dup: exact-subject-of-another-report > > If you want to undo deduplication, reply with: > #syz undup