| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Message-ID: <ZVeh2hyhHsCXIR3N@google.com>
Date: Fri, 17 Nov 2023 09:24:42 -0800
From: Jaegeuk Kim <jaegeuk@...nel.org>
To: Chao Yu <chao@...nel.org>
Cc: Daeho Jeong <daeho43@...il.com>, linux-kernel@...r.kernel.org,
linux-f2fs-devel@...ts.sourceforge.net, kernel-team@...roid.com,
Daeho Jeong <daehojeong@...gle.com>
Subject: Re: [f2fs-dev] [PATCH v2] f2fs-tools: do not reuse corrupted quota
inodes
On 11/15, Chao Yu wrote:
> On 2023/10/27 8:21, Daeho Jeong wrote:
> > From: Daeho Jeong <daehojeong@...gle.com>
> >
> > When we detect quota inode corruption, we better deallocate the current
> > space and allocate new ones for a clean start.
> >
> > Signed-off-by: Daeho Jeong <daehojeong@...gle.com>
> >
> > ---
> > v2: change node count check when creating a new node block
> > ---
> > fsck/fsck.c | 148 +++++++++++++++++++++++++++++++++++--------------
> > fsck/segment.c | 5 +-
> > 2 files changed, 109 insertions(+), 44 deletions(-)
> >
> > diff --git a/fsck/fsck.c b/fsck/fsck.c
> > index 99cface..dc8e282 100644
> > --- a/fsck/fsck.c
> > +++ b/fsck/fsck.c
> > @@ -67,6 +67,14 @@ int f2fs_set_sit_bitmap(struct f2fs_sb_info *sbi, u32 blk)
> > return f2fs_set_bit(BLKOFF_FROM_MAIN(sbi, blk), fsck->sit_area_bitmap);
> > }
> > +static inline int f2fs_clear_sit_bitmap(struct f2fs_sb_info *sbi, u32 blk)
> > +{
> > + struct f2fs_fsck *fsck = F2FS_FSCK(sbi);
> > +
> > + return f2fs_clear_bit(BLKOFF_FROM_MAIN(sbi, blk),
> > + fsck->sit_area_bitmap);
> > +}
> > +
> > static int add_into_hard_link_list(struct f2fs_sb_info *sbi,
> > u32 nid, u32 link_cnt)
> > {
> > @@ -2150,6 +2158,9 @@ int fsck_chk_quota_node(struct f2fs_sb_info *sbi)
> > return ret;
> > }
> > +static void fsck_disconnect_file(struct f2fs_sb_info *sbi, nid_t ino,
> > + bool dealloc);
> > +
> > int fsck_chk_quota_files(struct f2fs_sb_info *sbi)
> > {
> > struct f2fs_fsck *fsck = F2FS_FSCK(sbi);
> > @@ -2181,6 +2192,8 @@ int fsck_chk_quota_files(struct f2fs_sb_info *sbi)
> > if (c.fix_on) {
> > DBG(0, "Fixing Quota file ([%3d] ino [0x%x])\n",
> > qtype, ino);
> > + fsck_disconnect_file(sbi, ino, true);
> > + f2fs_rebuild_qf_inode(sbi, qtype);
> > f2fs_filesize_update(sbi, ino, 0);
> > ret = quota_write_inode(sbi, qtype);
> > if (!ret) {
> > @@ -2874,10 +2887,53 @@ static int fsck_do_reconnect_file(struct f2fs_sb_info *sbi,
> > return 0;
> > }
> > -static void fsck_failed_reconnect_file_dnode(struct f2fs_sb_info *sbi,
> > - struct f2fs_inode *inode, nid_t nid)
> > +static inline void release_inode_cnt(struct f2fs_sb_info *sbi, bool dealloc)
> > +{
> > + F2FS_FSCK(sbi)->chk.valid_inode_cnt--;
> > + if (dealloc)
> > + sbi->total_valid_inode_count--;
> > +}
> > +
> > +static inline void release_node_cnt(struct f2fs_sb_info *sbi, bool dealloc)
> > +{
> > + F2FS_FSCK(sbi)->chk.valid_node_cnt--;
> > + if (dealloc)
> > + sbi->total_valid_node_count--;
> > +}
> > +
> > +static inline void release_block_cnt(struct f2fs_sb_info *sbi, bool dealloc)
> > +{
> > + F2FS_FSCK(sbi)->chk.valid_blk_cnt--;
> > + if (dealloc)
> > + sbi->total_valid_block_count--;
> > +}
> > +
> > +static inline void release_block(struct f2fs_sb_info *sbi, u64 blkaddr,
> > + bool dealloc)
> > +{
> > + f2fs_clear_main_bitmap(sbi, blkaddr);
> > + if (dealloc) {
> > + struct seg_entry *se;
> > + u64 offset;
> > +
> > + se = get_seg_entry(sbi, GET_SEGNO(sbi, blkaddr));
> > + offset = OFFSET_IN_SEG(sbi, blkaddr);
> > + se->valid_blocks--;
> > + f2fs_clear_bit(offset, (char *)se->cur_valid_map);
> > + se->dirty = 1;
> > + f2fs_clear_sit_bitmap(sbi, blkaddr);
> > + }
> > +}
> > +
> > +static inline void release_nat_entry(struct f2fs_sb_info *sbi, u32 nid)
> > +{
> > + nullify_nat_entry(sbi, nid);
> > + F2FS_FSCK(sbi)->chk.valid_nat_entry_cnt--;
> > +}
> > +
> > +static void fsck_disconnect_file_dnode(struct f2fs_sb_info *sbi,
> > + struct f2fs_inode *inode, nid_t nid, bool dealloc)
> > {
> > - struct f2fs_fsck *fsck = F2FS_FSCK(sbi);
> > struct f2fs_node *node;
> > struct node_info ni;
> > u32 addr;
> > @@ -2890,27 +2946,29 @@ static void fsck_failed_reconnect_file_dnode(struct f2fs_sb_info *sbi,
> > err = dev_read_block(node, ni.blk_addr);
> > ASSERT(err >= 0);
> > - fsck->chk.valid_node_cnt--;
> > - fsck->chk.valid_blk_cnt--;
> > - f2fs_clear_main_bitmap(sbi, ni.blk_addr);
> > + release_node_cnt(sbi, dealloc);
> > + release_block_cnt(sbi, dealloc);
> > + release_block(sbi, ni.blk_addr, dealloc);
> > for (i = 0; i < ADDRS_PER_BLOCK(inode); i++) {
> > addr = le32_to_cpu(node->dn.addr[i]);
> > if (!addr)
> > continue;
> > - fsck->chk.valid_blk_cnt--;
> > + release_block_cnt(sbi, dealloc);
> > if (addr == NEW_ADDR || addr == COMPRESS_ADDR)
> > continue;
> > - f2fs_clear_main_bitmap(sbi, addr);
> > + release_block(sbi, addr, dealloc);
> > }
> > + if (dealloc)
> > + release_nat_entry(sbi, nid);
> > +
> > free(node);
> > }
> > -static void fsck_failed_reconnect_file_idnode(struct f2fs_sb_info *sbi,
> > - struct f2fs_inode *inode, nid_t nid)
> > +static void fsck_disconnect_file_idnode(struct f2fs_sb_info *sbi,
> > + struct f2fs_inode *inode, nid_t nid, bool dealloc)
> > {
> > - struct f2fs_fsck *fsck = F2FS_FSCK(sbi);
> > struct f2fs_node *node;
> > struct node_info ni;
> > nid_t tmp;
> > @@ -2923,24 +2981,26 @@ static void fsck_failed_reconnect_file_idnode(struct f2fs_sb_info *sbi,
> > err = dev_read_block(node, ni.blk_addr);
> > ASSERT(err >= 0);
> > - fsck->chk.valid_node_cnt--;
> > - fsck->chk.valid_blk_cnt--;
> > - f2fs_clear_main_bitmap(sbi, ni.blk_addr);
> > + release_node_cnt(sbi, dealloc);
> > + release_block_cnt(sbi, dealloc);
> > + release_block(sbi, ni.blk_addr, dealloc);
> > for (i = 0; i < NIDS_PER_BLOCK; i++) {
> > tmp = le32_to_cpu(node->in.nid[i]);
> > if (!tmp)
> > continue;
> > - fsck_failed_reconnect_file_dnode(sbi, inode, tmp);
> > + fsck_disconnect_file_dnode(sbi, inode, tmp, dealloc);
> > }
> > + if (dealloc)
> > + release_nat_entry(sbi, nid);
> > +
> > free(node);
> > }
> > -static void fsck_failed_reconnect_file_didnode(struct f2fs_sb_info *sbi,
> > - struct f2fs_inode *inode, nid_t nid)
> > +static void fsck_disconnect_file_didnode(struct f2fs_sb_info *sbi,
> > + struct f2fs_inode *inode, nid_t nid, bool dealloc)
> > {
> > - struct f2fs_fsck *fsck = F2FS_FSCK(sbi);
> > struct f2fs_node *node;
> > struct node_info ni;
> > nid_t tmp;
> > @@ -2953,28 +3013,26 @@ static void fsck_failed_reconnect_file_didnode(struct f2fs_sb_info *sbi,
> > err = dev_read_block(node, ni.blk_addr);
> > ASSERT(err >= 0);
> > - fsck->chk.valid_node_cnt--;
> > - fsck->chk.valid_blk_cnt--;
> > - f2fs_clear_main_bitmap(sbi, ni.blk_addr);
> > + release_node_cnt(sbi, dealloc);
> > + release_block_cnt(sbi, dealloc);
> > + release_block(sbi, ni.blk_addr, dealloc);
> > for (i = 0; i < NIDS_PER_BLOCK; i++) {
> > tmp = le32_to_cpu(node->in.nid[i]);
> > if (!tmp)
> > continue;
> > - fsck_failed_reconnect_file_idnode(sbi, inode, tmp);
> > + fsck_disconnect_file_idnode(sbi, inode, tmp, dealloc);
> > }
> > + if (dealloc)
> > + release_nat_entry(sbi, nid);
> > +
> > free(node);
> > }
> > -/*
> > - * Counters and main_area_bitmap are already changed during checking
> > - * inode block, so clear them. There is no need to clear new blocks
> > - * allocted to lost+found.
> > - */
> > -static void fsck_failed_reconnect_file(struct f2fs_sb_info *sbi, nid_t ino)
> > +static void fsck_disconnect_file(struct f2fs_sb_info *sbi, nid_t ino,
> > + bool dealloc)
> > {
> > - struct f2fs_fsck *fsck = F2FS_FSCK(sbi);
> > struct f2fs_node *node;
> > struct node_info ni;
> > nid_t nid;
> > @@ -2988,18 +3046,18 @@ static void fsck_failed_reconnect_file(struct f2fs_sb_info *sbi, nid_t ino)
> > ASSERT(err >= 0);
> > /* clear inode counters */
> > - fsck->chk.valid_inode_cnt--;
> > - fsck->chk.valid_node_cnt--;
> > - fsck->chk.valid_blk_cnt--;
> > - f2fs_clear_main_bitmap(sbi, ni.blk_addr);
> > + release_inode_cnt(sbi, dealloc);
> > + release_node_cnt(sbi, dealloc);
> > + release_block_cnt(sbi, dealloc);
> > + release_block(sbi, ni.blk_addr, dealloc);
> > /* clear xnid counters */
> > if (node->i.i_xattr_nid) {
> > nid = le32_to_cpu(node->i.i_xattr_nid);
> > - fsck->chk.valid_node_cnt--;
> > - fsck->chk.valid_blk_cnt--;
> > + release_node_cnt(sbi, dealloc);
> > + release_block_cnt(sbi, dealloc);
> > get_node_info(sbi, nid, &ni);
> > - f2fs_clear_main_bitmap(sbi, ni.blk_addr);
> > + release_block(sbi, ni.blk_addr, dealloc);
>
> Needs to release xattr node's nat entry, right?
>
> if (dealloc)
> release_nat_entry(sbi, nid);
Daeho?
>
> Thanks,
>
> > }
> > /* clear data counters */
> > @@ -3009,10 +3067,10 @@ static void fsck_failed_reconnect_file(struct f2fs_sb_info *sbi, nid_t ino)
> > block_t addr = le32_to_cpu(node->i.i_addr[ofs + i]);
> > if (!addr)
> > continue;
> > - fsck->chk.valid_blk_cnt--;
> > + release_block_cnt(sbi, dealloc);
> > if (addr == NEW_ADDR || addr == COMPRESS_ADDR)
> > continue;
> > - f2fs_clear_main_bitmap(sbi, addr);
> > + release_block(sbi, addr, dealloc);
> > }
> > }
> > @@ -3024,18 +3082,24 @@ static void fsck_failed_reconnect_file(struct f2fs_sb_info *sbi, nid_t ino)
> > switch (i) {
> > case 0: /* direct node */
> > case 1:
> > - fsck_failed_reconnect_file_dnode(sbi, &node->i, nid);
> > + fsck_disconnect_file_dnode(sbi, &node->i, nid,
> > + dealloc);
> > break;
> > case 2: /* indirect node */
> > case 3:
> > - fsck_failed_reconnect_file_idnode(sbi, &node->i, nid);
> > + fsck_disconnect_file_idnode(sbi, &node->i, nid,
> > + dealloc);
> > break;
> > case 4: /* double indirect node */
> > - fsck_failed_reconnect_file_didnode(sbi, &node->i, nid);
> > + fsck_disconnect_file_didnode(sbi, &node->i, nid,
> > + dealloc);
> > break;
> > }
> > }
> > + if (dealloc)
> > + release_nat_entry(sbi, ino);
> > +
> > free(node);
> > }
> > @@ -3121,7 +3185,7 @@ static int fsck_reconnect_file(struct f2fs_sb_info *sbi)
> > if (fsck_do_reconnect_file(sbi, lpf_node, node)) {
> > DBG(1, "Failed to reconnect inode [0x%x]\n",
> > nid);
> > - fsck_failed_reconnect_file(sbi, nid);
> > + fsck_disconnect_file(sbi, nid, false);
> > continue;
> > }
> > diff --git a/fsck/segment.c b/fsck/segment.c
> > index 3a9500f..4e326c4 100644
> > --- a/fsck/segment.c
> > +++ b/fsck/segment.c
> > @@ -37,7 +37,7 @@ int reserve_new_block(struct f2fs_sb_info *sbi, block_t *to,
> > return -ENOSPC;
> > }
> > if (is_node && fsck->chk.valid_node_cnt >=
> > - sbi->total_valid_node_count) {
> > + sbi->total_node_count) {
> > ERR_MSG("Not enough space for node block\n");
> > return -ENOSPC;
> > }
> > @@ -76,7 +76,7 @@ int reserve_new_block(struct f2fs_sb_info *sbi, block_t *to,
> > se = get_seg_entry(sbi, GET_SEGNO(sbi, blkaddr));
> > offset = OFFSET_IN_SEG(sbi, blkaddr);
> > - se->type = type;
> > + se->type = se->orig_type = type;
> > if (se->valid_blocks == 0)
> > SM_I(sbi)->free_segments--;
> > se->valid_blocks++;
> > @@ -101,6 +101,7 @@ int reserve_new_block(struct f2fs_sb_info *sbi, block_t *to,
> > if (c.func == FSCK) {
> > fsck->chk.valid_blk_cnt++;
> > if (is_node) {
> > + fsck->chk.valid_nat_entry_cnt++;
> > fsck->chk.valid_node_cnt++;
> > if (is_inode)
> > fsck->chk.valid_inode_cnt++;
Powered by blists - more mailing lists