From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-il1-f197.google.com (mail-il1-f197.google.com [209.85.166.197]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 61A762D1303 for ; Fri, 24 Oct 2025 07:15:25 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.166.197 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1761290127; cv=none; b=ULMw5El3O674k3GqJoVA7CF9NCqPaEjmjC+pGzPVzrLMPBCMFPwlRGV8wAQLX+nsF2EzJSk3xr21kAbkVoBBGtBQ13EFjuMgDgcqaFNBYgTIQRWvZ7KRQQt7n5OxtweDhft3OFDVSYbt8nUhNKjAXLNSs91B6ZthwUbNWoepz4A= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1761290127; c=relaxed/simple; bh=vpjK0hE8YXRo0KuVf6oDc7peRJobCW/rH+1ac96XXxc=; h=MIME-Version:Date:In-Reply-To:Message-ID:Subject:From:To: Content-Type; b=bO1ZpCXF0Y6eaGCoXUX1bgTjxd+GM5WBYi4uIahItSQKP1js/oGBKR+idOTx25VnP9z7jeMQhbICkcEaPsmBiFO4cATdwSW2y5JvA1zOIkBFxG31/zy8szlrcdw9KlTfc17Bgj4s8/Jng4h4GRYvoHOYx9SY1rE2/q1MQqPjISY= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=fail (p=none dis=none) header.from=syzkaller.appspotmail.com; spf=pass smtp.mailfrom=M3KW2WVRGUFZ5GODRSRYTGD7.apphosting.bounces.google.com; arc=none smtp.client-ip=209.85.166.197 Authentication-Results: smtp.subspace.kernel.org; dmarc=fail (p=none dis=none) header.from=syzkaller.appspotmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=M3KW2WVRGUFZ5GODRSRYTGD7.apphosting.bounces.google.com Received: by mail-il1-f197.google.com with SMTP id e9e14a558f8ab-430d4a4dea3so34847315ab.0 for ; Fri, 24 Oct 2025 00:15:25 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1761290124; x=1761894924; 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=3W0XWln4jrXi/FR5HXl0w/n/mi429O4MQ0jEz2lDFVw=; b=pTb3XRG/BEUvFb5ufXSLX/7GHHuvjN88b8Fa54JXyKuf+5zgY+75xrqWSdo7Jp9Z9z S7dkswTHnvXyTgC53uC9HULFzPhJKgaBHWUm4KCcYHS4YhE28q3fGF2nnstgfF+ttg+X 4ymzGloCcEDjYJ9T91Rs88IBRsZnj8ktDpT6GfKkgdTaUmAWnGkpWOzYYL54Rp9AvDYk Y3QdfIT+JgEb3tXz3X1ywysepJMHZ9i+USQPRzQDTXkghpidQYX4nSPMJRHoHVzAk7tM vudXRSEBQwtJmmXNo6gUZObQ+5rz2Laj3QWhgDWZtmTZoFwPCB7rsy83g/JZza7lvqld TMTA== X-Gm-Message-State: AOJu0YyobJEfI4NfWaDWIvm97hB5sBVHOzfRudwjNNfOvE8PsC4szXXF VklD6smiE5kqCsI8x3lyaneozoC3EkmSqtx9hQ0T/h2qMwRlmilwz5xSom0C0Jj+IRPFWcESPvj 06ei5Kqt0vvX+5bwpqN6HwHSOobTEcdCj1InQVu/w0HiKDPExG8ZBm6DqmFw= X-Google-Smtp-Source: AGHT+IHx38gBUouakSs6ARBXkSDQeYoK4qtLGVDGKnRoEREZZFGGkAyhHShZ6PohzJ6rFmAGMafo9em8r+YUN5qASR+H5C+IQwMd Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6e02:3e8d:b0:42f:9bf1:4fe9 with SMTP id e9e14a558f8ab-431eb67c6dfmr22707865ab.14.1761290124452; Fri, 24 Oct 2025 00:15:24 -0700 (PDT) Date: Fri, 24 Oct 2025 00:15:24 -0700 In-Reply-To: <66f6bfa7.050a0220.38ace9.001a.GAE@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <68fb278c.050a0220.346f24.00a3.GAE@google.com> Subject: Forwarded: #syz test https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git linux-6.1.y From: syzbot To: linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" For archival purposes, forwarding an incoming command email to linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com. *** Subject: #syz test https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git linux-6.1.y Author: dmantipov@yandex.ru diff --git a/fs/ocfs2/alloc.c b/fs/ocfs2/alloc.c index 7f11ffacc915..e606826045b5 100644 --- a/fs/ocfs2/alloc.c +++ b/fs/ocfs2/alloc.c @@ -6155,6 +6155,9 @@ static int ocfs2_get_truncate_log_info(struct ocfs2_super *osb, int status; struct inode *inode = NULL; struct buffer_head *bh = NULL; + struct ocfs2_dinode *di; + struct ocfs2_truncate_log *tl; + unsigned int tl_count, tl_used; inode = ocfs2_get_system_file_inode(osb, TRUNCATE_LOG_SYSTEM_INODE, @@ -6172,6 +6175,19 @@ static int ocfs2_get_truncate_log_info(struct ocfs2_super *osb, goto bail; } + di = (struct ocfs2_dinode *)bh->b_data; + tl = &di->id2.i_dealloc; + tl_used = le16_to_cpu(tl->tl_used); + tl_count = le16_to_cpu(tl->tl_count); + if (unlikely(tl_count > ocfs2_truncate_recs_per_inode(osb->sb) || + tl_count == 0 || tl_used > tl_count)) { + status = -EFSCORRUPTED; + iput(inode); + brelse(bh); + mlog_errno(status); + goto bail; + } + *tl_inode = inode; *tl_bh = bh; bail: diff --git a/fs/ocfs2/dir.c b/fs/ocfs2/dir.c index de6fd4a09ffd..10d0618a0ddf 100644 --- a/fs/ocfs2/dir.c +++ b/fs/ocfs2/dir.c @@ -302,8 +302,21 @@ static int ocfs2_check_dir_entry(struct inode *dir, unsigned long offset) { const char *error_msg = NULL; - const int rlen = le16_to_cpu(de->rec_len); - const unsigned long next_offset = ((char *) de - buf) + rlen; + unsigned long next_offset; + int rlen; + + if (offset > size - OCFS2_DIR_REC_LEN(1)) { + /* Dirent is (maybe partially) beyond the buffer + * boundaries so touching 'de' members is unsafe. + */ + mlog(ML_ERROR, "directory entry (#%llu: offset=%lu) " + "too close to end or out-of-bounds", + (unsigned long long)OCFS2_I(dir)->ip_blkno, offset); + return 0; + } + + rlen = le16_to_cpu(de->rec_len); + next_offset = ((char *) de - buf) + rlen; if (unlikely(rlen < OCFS2_DIR_REC_LEN(1))) error_msg = "rec_len is smaller than minimal"; @@ -778,6 +791,14 @@ static int ocfs2_dx_dir_lookup_rec(struct inode *inode, struct ocfs2_extent_block *eb; struct ocfs2_extent_rec *rec = NULL; + if (le16_to_cpu(el->l_count) != + ocfs2_extent_recs_per_dx_root(inode->i_sb)) { + ret = ocfs2_error(inode->i_sb, + "Inode %lu has invalid extent list length %u\n", + inode->i_ino, le16_to_cpu(el->l_count)); + goto out; + } + if (el->l_tree_depth) { ret = ocfs2_find_leaf(INODE_CACHE(inode), el, major_hash, &eb_bh); @@ -3416,6 +3437,14 @@ static int ocfs2_find_dir_space_id(struct inode *dir, struct buffer_head *di_bh, offset += le16_to_cpu(de->rec_len); } + if (!last_de) { + ret = ocfs2_error(sb, "Directory entry (#%llu: size=%lld) " + "is unexpectedly short", + (unsigned long long)OCFS2_I(dir)->ip_blkno, + i_size_read(dir)); + goto out; + } + /* * We're going to require expansion of the directory - figure * out how many blocks we'll need so that a place for the diff --git a/fs/ocfs2/inode.c b/fs/ocfs2/inode.c index a1f3b25ce612..7115d2091cb9 100644 --- a/fs/ocfs2/inode.c +++ b/fs/ocfs2/inode.c @@ -1419,6 +1419,14 @@ int ocfs2_validate_inode_block(struct super_block *sb, goto bail; } + if ((le16_to_cpu(di->i_dyn_features) & OCFS2_INLINE_DATA_FL) && + le32_to_cpu(di->i_clusters)) { + rc = ocfs2_error(sb, "Invalid dinode %llu: %u clusters\n", + (unsigned long long)bh->b_blocknr, + le32_to_cpu(di->i_clusters)); + goto bail; + } + rc = 0; bail: diff --git a/fs/ocfs2/move_extents.c b/fs/ocfs2/move_extents.c index b1e32ec4a9d4..6acf13adfb55 100644 --- a/fs/ocfs2/move_extents.c +++ b/fs/ocfs2/move_extents.c @@ -98,7 +98,13 @@ static int __ocfs2_move_extent(handle_t *handle, rec = &el->l_recs[index]; - BUG_ON(ext_flags != rec->e_flags); + if (ext_flags != rec->e_flags) { + ret = ocfs2_error(inode->i_sb, + "Inode %llu has corrupted extent %d with flags 0x%x at cpos %u\n", + (unsigned long long)ino, index, rec->e_flags, cpos); + goto out; + } + /* * after moving/defraging to new location, the extent is not going * to be refcounted anymore. @@ -1032,6 +1038,12 @@ int ocfs2_ioctl_move_extents(struct file *filp, void __user *argp) if (range.me_threshold > i_size_read(inode)) range.me_threshold = i_size_read(inode); + if (range.me_flags & ~(OCFS2_MOVE_EXT_FL_AUTO_DEFRAG | + OCFS2_MOVE_EXT_FL_PART_DEFRAG)) { + status = -EINVAL; + goto out_free; + } + if (range.me_flags & OCFS2_MOVE_EXT_FL_AUTO_DEFRAG) { context->auto_defrag = 1; diff --git a/fs/ocfs2/suballoc.c b/fs/ocfs2/suballoc.c index 166c8918c825..d11a0b83baba 100644 --- a/fs/ocfs2/suballoc.c +++ b/fs/ocfs2/suballoc.c @@ -645,6 +645,16 @@ ocfs2_block_group_alloc_discontig(handle_t *handle, return status ? ERR_PTR(status) : bg_bh; } +static int ocfs2_check_chain_list(struct ocfs2_chain_list *cl, + struct super_block *sb) +{ + if (le16_to_cpu(cl->cl_count) != ocfs2_chain_recs_per_inode(sb)) + return -EINVAL; + if (le16_to_cpu(cl->cl_next_free_rec) > le16_to_cpu(cl->cl_count)) + return -EINVAL; + return 0; +} + /* * We expect the block group allocator to already be locked. */ @@ -667,6 +677,10 @@ static int ocfs2_block_group_alloc(struct ocfs2_super *osb, BUG_ON(ocfs2_is_cluster_bitmap(alloc_inode)); cl = &fe->id2.i_chain; + status = ocfs2_check_chain_list(cl, alloc_inode->i_sb); + if (status) + goto bail; + status = ocfs2_reserve_clusters_with_limit(osb, le16_to_cpu(cl->cl_cpg), max_block, flags, &ac); @@ -1923,6 +1937,9 @@ static int ocfs2_claim_suballoc_bits(struct ocfs2_alloc_context *ac, } cl = (struct ocfs2_chain_list *) &fe->id2.i_chain; + status = ocfs2_check_chain_list(cl, ac->ac_inode->i_sb); + if (status) + goto bail; victim = ocfs2_find_victim_chain(cl); ac->ac_chain = victim;