Duane Griffin wrote: > "Corrupt root limit in dir inode %ld, running e2fsck is recommended\n" > > Probably good, for anything that was read from disk, certainly.
I don't know if it's worth differentiating messages for different types of corruption (root block vs. others, etc...) - I guess the other error cases do. Maybe it'd be best to just consolidate the fsck suggestion message under fail: ? Here's a patch rolling up yours with mine + discussed changes, and consolidating the fsck suggestion message. How's it look to you? Suppose I'd better run this a bit to be sure it's not hitting any common cases and issuing new warnings...? ThAnks! -Eric --------------------------------- Convert asserts (BUGs) in dx_probe from bad on-disk data to recoverable errors with helpful warnings. With help catching other asserts from Duane Griffin <[EMAIL PROTECTED]> Signed-off-by: Eric Sandeen <[EMAIL PROTECTED]> Index: linux-2.6.22-rc4/fs/ext3/namei.c =================================================================== --- linux-2.6.22-rc4.orig/fs/ext3/namei.c +++ linux-2.6.22-rc4/fs/ext3/namei.c @@ -379,13 +379,28 @@ dx_probe(struct dentry *dentry, struct i entries = (struct dx_entry *) (((char *)&root->info) + root->info.info_length); - assert(dx_get_limit(entries) == dx_root_limit(dir, - root->info.info_length)); + + if (dx_get_limit(entries) != dx_root_limit(dir, + root->info.info_length)) { + ext3_warning(dir->i_sb, __FUNCTION__, + "dx entry: limit != root limit\n"); + brelse(bh); + *err = ERR_BAD_DX_DIR; + goto fail; + } + dxtrace (printk("Look up %x", hash)); while (1) { count = dx_get_count(entries); - assert (count && count <= dx_get_limit(entries)); + if (!count || count > dx_get_limit(entries)) { + ext3_warning(dir->i_sb, __FUNCTION__, + "dx entry: no count or count > limit\n"); + brelse(bh); + *err = ERR_BAD_DX_DIR; + goto fail2; + } + p = entries + 1; q = entries + count - 1; while (p <= q) @@ -423,8 +438,15 @@ dx_probe(struct dentry *dentry, struct i if (!(bh = ext3_bread (NULL,dir, dx_get_block(at), 0, err))) goto fail2; at = entries = ((struct dx_node *) bh->b_data)->entries; - assert (dx_get_limit(entries) == dx_node_limit (dir)); + if (dx_get_limit(entries) != dx_node_limit (dir)) { + ext3_warning(dir->i_sb, __FUNCTION__, + "dx entry: limit != node limit\n"); + brelse(bh); + *err = ERR_BAD_DX_DIR; + goto fail2; + } frame++; + frame->bh = NULL; } fail2: while (frame >= frame_in) { @@ -432,6 +454,10 @@ fail2: frame--; } fail: + if (*err == ERR_BAD_DX_DIR) + ext3_warning(dir->i_sb, __FUNCTION__, + "Corrupt dir inode %ld, running e2fsck is " + "recommended.\n", dir->i_ino); return NULL; } Index: linux-2.6.22-rc4/fs/ext4/namei.c =================================================================== --- linux-2.6.22-rc4.orig/fs/ext4/namei.c +++ linux-2.6.22-rc4/fs/ext4/namei.c @@ -379,13 +379,28 @@ dx_probe(struct dentry *dentry, struct i entries = (struct dx_entry *) (((char *)&root->info) + root->info.info_length); - assert(dx_get_limit(entries) == dx_root_limit(dir, - root->info.info_length)); + + if (dx_get_limit(entries) != dx_root_limit(dir, + root->info.info_length)) { + ext4_warning(dir->i_sb, __FUNCTION__, + "dx entry: limit != root limit\n"); + brelse(bh); + *err = ERR_BAD_DX_DIR; + goto fail; + } + dxtrace (printk("Look up %x", hash)); while (1) { count = dx_get_count(entries); - assert (count && count <= dx_get_limit(entries)); + if (!count || count > dx_get_limit(entries)) { + ext4_warning(dir->i_sb, __FUNCTION__, + "dx entry: no count or count > limit\n"); + brelse(bh); + *err = ERR_BAD_DX_DIR; + goto fail2; + } + p = entries + 1; q = entries + count - 1; while (p <= q) @@ -423,8 +438,15 @@ dx_probe(struct dentry *dentry, struct i if (!(bh = ext4_bread (NULL,dir, dx_get_block(at), 0, err))) goto fail2; at = entries = ((struct dx_node *) bh->b_data)->entries; - assert (dx_get_limit(entries) == dx_node_limit (dir)); + if (dx_get_limit(entries) != dx_node_limit (dir)) { + ext4_warning(dir->i_sb, __FUNCTION__, + "dx entry: limit != node limit\n"); + brelse(bh); + *err = ERR_BAD_DX_DIR; + goto fail2; + } frame++; + frame->bh = NULL; } fail2: while (frame >= frame_in) { @@ -432,6 +454,10 @@ fail2: frame--; } fail: + if (*err == ERR_BAD_DX_DIR) + ext4_warning(dir->i_sb, __FUNCTION__, + "Corrupt dir inode %ld, running e2fsck is " + "recommended.\n", dir->i_ino); return NULL; } - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/