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authorLinus Torvalds <torvalds@linux-foundation.org>2023-03-01 09:06:51 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2023-03-01 09:06:51 -0800
commite31b283a58dfe50ab1641d8fd2ead9b62f9ab256 (patch)
tree77fc60b68dede656cc685996ba6c540fee772694 /fs/jffs2
parent3808330b20ee0b23e1e3c192610c3a2ee65605e9 (diff)
parent8fcf2d012c8641c18adcd139dba6a1e556338d36 (diff)
Merge tag 'ubifs-for-linus-6.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rw/ubifs
Pull jffs2, ubi and ubifs updates from Richard Weinberger: "JFFS2: - Fix memory corruption in error path - Spelling and coding style fixes UBI: - Switch to BLK_MQ_F_BLOCKING in ubiblock - Wire up partent device (for sysfs) - Multiple UAF bugfixes - Fix for an infinite loop in WL error path UBIFS: - Fix for multiple memory leaks in error paths - Fixes for wrong space accounting - Minor cleanups - Spelling and coding style fixes" * tag 'ubifs-for-linus-6.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rw/ubifs: (36 commits) ubi: block: Fix a possible use-after-free bug in ubiblock_create() ubifs: make kobj_type structures constant mtd: ubi: block: wire-up device parent mtd: ubi: wire-up parent MTD device ubi: use correct names in function kernel-doc comments ubi: block: set BLK_MQ_F_BLOCKING jffs2: Fix list_del corruption if compressors initialized failed jffs2: Use function instead of macro when initialize compressors jffs2: fix spelling mistake "neccecary"->"necessary" ubifs: Fix kernel-doc ubifs: Fix some kernel-doc comments UBI: Fastmap: Fix kernel-doc ubi: ubi_wl_put_peb: Fix infinite loop when wear-leveling work failed ubi: Fix UAF wear-leveling entry in eraseblk_count_seq_show() ubi: fastmap: Fix missed fm_anchor PEB in wear-leveling after disabling fastmap ubifs: ubifs_releasepage: Remove ubifs_assert(0) to valid this process ubifs: ubifs_writepage: Mark page dirty after writing inode failed ubifs: dirty_cow_znode: Fix memleak in error handling path ubifs: Re-statistic cleaned znode count if commit failed ubi: Fix permission display of the debugfs files ...
Diffstat (limited to 'fs/jffs2')
-rw-r--r--fs/jffs2/compr.c50
-rw-r--r--fs/jffs2/compr.h26
-rw-r--r--fs/jffs2/file.c15
-rw-r--r--fs/jffs2/fs.c2
4 files changed, 57 insertions, 36 deletions
diff --git a/fs/jffs2/compr.c b/fs/jffs2/compr.c
index 4849a4c9a0e2..764f19dec3f0 100644
--- a/fs/jffs2/compr.c
+++ b/fs/jffs2/compr.c
@@ -364,20 +364,25 @@ void jffs2_free_comprbuf(unsigned char *comprbuf, unsigned char *orig)
int __init jffs2_compressors_init(void)
{
+ int ret = 0;
/* Registering compressors */
-#ifdef CONFIG_JFFS2_ZLIB
- jffs2_zlib_init();
-#endif
-#ifdef CONFIG_JFFS2_RTIME
- jffs2_rtime_init();
-#endif
-#ifdef CONFIG_JFFS2_RUBIN
- jffs2_rubinmips_init();
- jffs2_dynrubin_init();
-#endif
-#ifdef CONFIG_JFFS2_LZO
- jffs2_lzo_init();
-#endif
+ ret = jffs2_zlib_init();
+ if (ret)
+ goto exit;
+ ret = jffs2_rtime_init();
+ if (ret)
+ goto exit_zlib;
+ ret = jffs2_rubinmips_init();
+ if (ret)
+ goto exit_rtime;
+ ret = jffs2_dynrubin_init();
+ if (ret)
+ goto exit_runinmips;
+ ret = jffs2_lzo_init();
+ if (ret)
+ goto exit_dynrubin;
+
+
/* Setting default compression mode */
#ifdef CONFIG_JFFS2_CMODE_NONE
jffs2_compression_mode = JFFS2_COMPR_MODE_NONE;
@@ -396,23 +401,26 @@ int __init jffs2_compressors_init(void)
#endif
#endif
return 0;
+
+exit_dynrubin:
+ jffs2_dynrubin_exit();
+exit_runinmips:
+ jffs2_rubinmips_exit();
+exit_rtime:
+ jffs2_rtime_exit();
+exit_zlib:
+ jffs2_zlib_exit();
+exit:
+ return ret;
}
int jffs2_compressors_exit(void)
{
/* Unregistering compressors */
-#ifdef CONFIG_JFFS2_LZO
jffs2_lzo_exit();
-#endif
-#ifdef CONFIG_JFFS2_RUBIN
jffs2_dynrubin_exit();
jffs2_rubinmips_exit();
-#endif
-#ifdef CONFIG_JFFS2_RTIME
jffs2_rtime_exit();
-#endif
-#ifdef CONFIG_JFFS2_ZLIB
jffs2_zlib_exit();
-#endif
return 0;
}
diff --git a/fs/jffs2/compr.h b/fs/jffs2/compr.h
index 5e91d578f4ed..3716b6b7924c 100644
--- a/fs/jffs2/compr.h
+++ b/fs/jffs2/compr.h
@@ -88,18 +88,32 @@ int jffs2_rubinmips_init(void);
void jffs2_rubinmips_exit(void);
int jffs2_dynrubin_init(void);
void jffs2_dynrubin_exit(void);
+#else
+static inline int jffs2_rubinmips_init(void) { return 0; }
+static inline void jffs2_rubinmips_exit(void) {}
+static inline int jffs2_dynrubin_init(void) { return 0; }
+static inline void jffs2_dynrubin_exit(void) {}
#endif
#ifdef CONFIG_JFFS2_RTIME
-int jffs2_rtime_init(void);
-void jffs2_rtime_exit(void);
+extern int jffs2_rtime_init(void);
+extern void jffs2_rtime_exit(void);
+#else
+static inline int jffs2_rtime_init(void) { return 0; }
+static inline void jffs2_rtime_exit(void) {}
#endif
#ifdef CONFIG_JFFS2_ZLIB
-int jffs2_zlib_init(void);
-void jffs2_zlib_exit(void);
+extern int jffs2_zlib_init(void);
+extern void jffs2_zlib_exit(void);
+#else
+static inline int jffs2_zlib_init(void) { return 0; }
+static inline void jffs2_zlib_exit(void) {}
#endif
#ifdef CONFIG_JFFS2_LZO
-int jffs2_lzo_init(void);
-void jffs2_lzo_exit(void);
+extern int jffs2_lzo_init(void);
+extern void jffs2_lzo_exit(void);
+#else
+static inline int jffs2_lzo_init(void) { return 0; }
+static inline void jffs2_lzo_exit(void) {}
#endif
#endif /* __JFFS2_COMPR_H__ */
diff --git a/fs/jffs2/file.c b/fs/jffs2/file.c
index 3cf71befa475..96b0275ce957 100644
--- a/fs/jffs2/file.c
+++ b/fs/jffs2/file.c
@@ -137,19 +137,18 @@ static int jffs2_write_begin(struct file *filp, struct address_space *mapping,
struct jffs2_inode_info *f = JFFS2_INODE_INFO(inode);
struct jffs2_sb_info *c = JFFS2_SB_INFO(inode->i_sb);
pgoff_t index = pos >> PAGE_SHIFT;
- uint32_t pageofs = index << PAGE_SHIFT;
int ret = 0;
jffs2_dbg(1, "%s()\n", __func__);
- if (pageofs > inode->i_size) {
- /* Make new hole frag from old EOF to new page */
+ if (pos > inode->i_size) {
+ /* Make new hole frag from old EOF to new position */
struct jffs2_raw_inode ri;
struct jffs2_full_dnode *fn;
uint32_t alloc_len;
- jffs2_dbg(1, "Writing new hole frag 0x%x-0x%x between current EOF and new page\n",
- (unsigned int)inode->i_size, pageofs);
+ jffs2_dbg(1, "Writing new hole frag 0x%x-0x%x between current EOF and new position\n",
+ (unsigned int)inode->i_size, (uint32_t)pos);
ret = jffs2_reserve_space(c, sizeof(ri), &alloc_len,
ALLOC_NORMAL, JFFS2_SUMMARY_INODE_SIZE);
@@ -169,10 +168,10 @@ static int jffs2_write_begin(struct file *filp, struct address_space *mapping,
ri.mode = cpu_to_jemode(inode->i_mode);
ri.uid = cpu_to_je16(i_uid_read(inode));
ri.gid = cpu_to_je16(i_gid_read(inode));
- ri.isize = cpu_to_je32(max((uint32_t)inode->i_size, pageofs));
+ ri.isize = cpu_to_je32((uint32_t)pos);
ri.atime = ri.ctime = ri.mtime = cpu_to_je32(JFFS2_NOW());
ri.offset = cpu_to_je32(inode->i_size);
- ri.dsize = cpu_to_je32(pageofs - inode->i_size);
+ ri.dsize = cpu_to_je32((uint32_t)pos - inode->i_size);
ri.csize = cpu_to_je32(0);
ri.compr = JFFS2_COMPR_ZERO;
ri.node_crc = cpu_to_je32(crc32(0, &ri, sizeof(ri)-8));
@@ -202,7 +201,7 @@ static int jffs2_write_begin(struct file *filp, struct address_space *mapping,
goto out_err;
}
jffs2_complete_reservation(c);
- inode->i_size = pageofs;
+ inode->i_size = pos;
mutex_unlock(&f->sem);
}
diff --git a/fs/jffs2/fs.c b/fs/jffs2/fs.c
index 09174898efd0..038516bee1ab 100644
--- a/fs/jffs2/fs.c
+++ b/fs/jffs2/fs.c
@@ -403,7 +403,7 @@ int jffs2_do_remount_fs(struct super_block *sb, struct fs_context *fc)
/* We stop if it was running, then restart if it needs to.
This also catches the case where it was stopped and this
is just a remount to restart it.
- Flush the writebuffer, if neccecary, else we loose it */
+ Flush the writebuffer, if necessary, else we loose it */
if (!sb_rdonly(sb)) {
jffs2_stop_garbage_collect_thread(c);
mutex_lock(&c->alloc_sem);