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 0C0B722095 for ; Mon, 9 Sep 2024 14:02:45 +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=1725890567; cv=none; b=OGQqgIjaqGlRQIF439vygy3YNwLatbr86I5WB9Nk9+I/GoA5U956svq1VTlNjW/BEyMwgYAqXycJgslJ5CsLUlhFXw3hWIp/miW/IpiI5mzZDsKoux6kACmD1cdIZtF3g3hr5zmjxhMzgwe9APQWrDGIzzTRblrEvyZdekcgf3I= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1725890567; c=relaxed/simple; bh=wnLgePkGM9YiICg864sAXY6woeBp8cqEKUTOstcrdgQ=; h=Message-ID:Date:MIME-Version:Cc:Subject:To:References:From: In-Reply-To:Content-Type; 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hDl0GWrImmAYFaO4cVjXwwLRrStpSi5Vk5huX5mgV1Bs/mSaGz84xWILYl9SJf4yzQ Qxh2ZvybJ+JbnnPiBWRvmihaCDO+CM7hBuO2+O9lubLlKrMaybn4+pkigIypfdo7Br kV5XW0GN+ODBg== Message-ID: <2f736900-9642-4824-9e41-e304c250857a@kernel.org> Date: Mon, 9 Sep 2024 22:02:42 +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?] kernel BUG in new_curseg To: syzbot , jaegeuk@kernel.org, linux-f2fs-devel@lists.sourceforge.net, linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com References: <000000000000f0ee5b0621ab694b@google.com> Content-Language: en-US From: Chao Yu Autocrypt: addr=chao@kernel.org; keydata= xsFNBFYs6bUBEADJuxYGZRMvAEySns+DKVtVQRKDYcHlmj+s9is35mtlhrLyjm35FWJY099R 6DL9bp8tAzLJOMBn9RuTsu7hbRDErCCTiyXWAsFsPkpt5jgTOy90OQVyTon1i/fDz4sgGOrL 1tUfcx4m5i5EICpdSuXm0dLsC5lFB2KffLNw/ZfRuS+nNlzUm9lomLXxOgAsOpuEVps7RdYy 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6ho73ZNk1bwUj/wOcqWu+ZdnQa3zbfvMI9o/kFlOu8iTGlD8sNjJK+Y/fPK3znFqoqqKmSFZ aiRALjAZH6ufspvYAJEJE9eZSX7Rtdyt30MMHQARAQABwsFfBBgBCgAJBQJWLOm1AhsMAAoJ EKTPgB1/p52GPpoP/2LOn/5KSkGHGmdjzRoQHBTdm2YV1YwgADg52/mU68Wo6viStZqcVEnX 3ALsWeETod3qeBCJ/TR2C6hnsqsALkXMFFJTX8aRi/E4WgBqNvNgAkWGsg5XKB3JUoJmQLqe CGVCT1OSQA/gTEfB8tTZAGFwlw1D3W988CiGnnRb2EEqU4pEuBoQir0sixJzFWybf0jjEi7P pODxw/NCyIf9GNRNYByUTVKnC7C51a3b1gNs10aTUmRfQuu+iM5yST5qMp4ls/yYl5ybr7N1 zSq9iuL13I35csBOn13U5NE67zEb/pCFspZ6ByU4zxChSOTdIJSm4/DEKlqQZhh3FnVHh2Ld eG/Wbc1KVLZYX1NNbXTz7gBlVYe8aGpPNffsEsfNCGsFDGth0tC32zLT+5/r43awmxSJfx2P 5aGkpdszvvyZ4hvcDfZ7U5CBItP/tWXYV0DDl8rCFmhZZw570vlx8AnTiC1v1FzrNfvtuxm3 92Qh98hAj3cMFKtEVbLKJvrc2AO+mQlS7zl1qWblEhpZnXi05S1AoT0gDW2lwe54VfT3ySon 8Klpbp5W4eEoY21tLwuNzgUMxmycfM4GaJWNCncKuMT4qGVQO9SPFs0vgUrdBUC5Pn5ZJ46X mZA0DUz0S8BJtYGI0DUC/jAKhIgy1vAx39y7sAshwu2VILa71tXJ In-Reply-To: <000000000000f0ee5b0621ab694b@google.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit #syz test git://git.kernel.org/pub/scm/linux/kernel/git/chao/linux.git wip On 2024/9/9 16:19, syzbot wrote: > Hello, > > syzbot found the following issue on: > > HEAD commit: 89f5e14d05b4 Merge tag 'timers_urgent_for_v6.11_rc7' of gi.. > git tree: upstream > console output: https://syzkaller.appspot.com/x/log.txt?x=14085f29980000 > kernel config: https://syzkaller.appspot.com/x/.config?x=58a85aa6925a8b78 > dashboard link: https://syzkaller.appspot.com/bug?extid=341e5f32ebafbb46b81c > 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=1614c807980000 > C reproducer: https://syzkaller.appspot.com/x/repro.c?x=13854e00580000 > > Downloadable assets: > disk image (non-bootable): https://storage.googleapis.com/syzbot-assets/7bc7510fe41f/non_bootable_disk-89f5e14d.raw.xz > vmlinux: https://storage.googleapis.com/syzbot-assets/dfc310daee41/vmlinux-89f5e14d.xz > kernel image: https://storage.googleapis.com/syzbot-assets/a92f22c06568/bzImage-89f5e14d.xz > mounted in repro: https://storage.googleapis.com/syzbot-assets/c7aaf1741c93/mount_1.gz > > IMPORTANT: if you fix the issue, please add the following tag to the commit: > Reported-by: syzbot+341e5f32ebafbb46b81c@syzkaller.appspotmail.com > > F2FS-fs (loop0): inject no free segment in get_new_segment of __allocate_new_segment+0x1ce/0x940 fs/f2fs/segment.c:3167 > F2FS-fs (loop0): Stopped filesystem due to reason: 7 > ------------[ cut here ]------------ > kernel BUG at fs/f2fs/segment.c:2748! > Oops: invalid opcode: 0000 [#1] PREEMPT SMP KASAN NOPTI > CPU: 0 UID: 0 PID: 5109 Comm: syz-executor304 Not tainted 6.11.0-rc6-syzkaller-00363-g89f5e14d05b4 #0 > Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 > RIP: 0010:get_new_segment fs/f2fs/segment.c:2748 [inline] > RIP: 0010:new_curseg+0x1f61/0x1f70 fs/f2fs/segment.c:2836 > Code: 24 58 e8 12 b9 f2 ff eb 05 e8 4b 71 96 fd 48 8b 7c 24 70 e8 91 ac c6 07 48 8b 7c 24 10 31 f6 ba 07 00 00 00 e8 50 1e f6 ff 90 <0f> 0b 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 90 90 90 90 90 90 90 > RSP: 0018:ffffc9000179f548 EFLAGS: 00010246 > RAX: 8fb07c62f860e300 RBX: 00000000000002b2 RCX: 8fb07c62f860e300 > RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000 > RBP: ffff8880125250c8 R08: ffffffff817401bc R09: 1ffff920002f3e20 > R10: dffffc0000000000 R11: fffff520002f3e21 R12: ffff8880008c2700 > R13: ffff8880125250cc R14: 1ffff110024a4a19 R15: 00000000000002b2 > FS: 0000555593e0e380(0000) GS:ffff88801fe00000(0000) knlGS:0000000000000000 > CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 > CR2: 00007f6cf8cb40f8 CR3: 000000001255a000 CR4: 0000000000350ef0 > DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 > DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 > Call Trace: > > __allocate_new_segment+0x1ce/0x940 fs/f2fs/segment.c:3167 > f2fs_allocate_new_section fs/f2fs/segment.c:3181 [inline] > f2fs_allocate_pinning_section+0xfa/0x4e0 fs/f2fs/segment.c:3195 > f2fs_expand_inode_data+0x5d6/0xbb0 fs/f2fs/file.c:1799 > f2fs_fallocate+0x448/0x960 fs/f2fs/file.c:1903 > vfs_fallocate+0x553/0x6c0 fs/open.c:334 > do_vfs_ioctl+0x2592/0x2e50 fs/ioctl.c:886 > __do_sys_ioctl fs/ioctl.c:905 [inline] > __se_sys_ioctl+0x81/0x170 fs/ioctl.c:893 > 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: 0033:0x7f6cf8c37229 > Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 21 18 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:00007ffeb5036b58 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 > RAX: ffffffffffffffda RBX: 0030656c69662f2e RCX: 00007f6cf8c37229 > RDX: 00000000200000c0 RSI: 0000000040305828 RDI: 0000000000000004 > RBP: 0000000000000000 R08: 00007ffeb5036b90 R09: 00007ffeb5036b90 > R10: 00007ffeb5036b90 R11: 0000000000000246 R12: 00007ffeb5036b7c > R13: 0000000000000002 R14: 431bde82d7b634db R15: 00007ffeb5036bb0 > > Modules linked in: > ---[ end trace 0000000000000000 ]--- > RIP: 0010:get_new_segment fs/f2fs/segment.c:2748 [inline] > RIP: 0010:new_curseg+0x1f61/0x1f70 fs/f2fs/segment.c:2836 > Code: 24 58 e8 12 b9 f2 ff eb 05 e8 4b 71 96 fd 48 8b 7c 24 70 e8 91 ac c6 07 48 8b 7c 24 10 31 f6 ba 07 00 00 00 e8 50 1e f6 ff 90 <0f> 0b 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 90 90 90 90 90 90 90 > RSP: 0018:ffffc9000179f548 EFLAGS: 00010246 > RAX: 8fb07c62f860e300 RBX: 00000000000002b2 RCX: 8fb07c62f860e300 > RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000 > RBP: ffff8880125250c8 R08: ffffffff817401bc R09: 1ffff920002f3e20 > R10: dffffc0000000000 R11: fffff520002f3e21 R12: ffff8880008c2700 > R13: ffff8880125250cc R14: 1ffff110024a4a19 R15: 00000000000002b2 > FS: 0000555593e0e380(0000) GS:ffff88801fe00000(0000) knlGS:0000000000000000 > CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 > CR2: 00007f6cf8cb40f8 CR3: 000000001255a000 CR4: 0000000000350ef0 > DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 > DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 > > > --- > 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. > > 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