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1e5654de0f
linux/fs/exfat
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Namjae Jeon 1e5654de0f exfat: handle wrong stream entry size in exfat_readdir() 
The compatibility issue between linux exfat and exfat of some camera
company was reported from Florian. In their exfat, if the number of files
exceeds any limit, the DataLength in stream entry of the directory is
no longer updated. So some files created from camera does not show in
linux exfat. because linux exfat doesn't allow that cpos becomes larger
than DataLength of stream entry. This patch check DataLength in stream
entry only if the type is ALLOC_NO_FAT_CHAIN and add the check ensure
that dentry offset does not exceed max dentries size(256 MB) to avoid
the circular FAT chain issue.

Fixes: ca06197382 ("exfat: add directory operations")
Cc: stable@vger.kernel.org # v5.9
Reported-by: Florian Cramer <flrncrmr@gmail.com>
Reviewed-by: Sungjong Seo <sj1557.seo@samsung.com>
Tested-by: Chris Down <chris@chrisdown.name>
Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com>
2021-07-04 09:33:00 +09:00
..
balloc.c exfat: improve write performance when dirsync enabled 2021-04-27 20:45:06 +09:00
cache.c exfat: fix use of uninitialized spinlock on error path 2020-10-07 14:27:13 +09:00
dir.c exfat: handle wrong stream entry size in exfat_readdir() 2021-07-04 09:33:00 +09:00
exfat_fs.h exfat: speed up iterate/lookup by fixing start point of traversing cluster chain 2021-04-27 20:45:07 +09:00
exfat_raw.h exfat: fix shift-out-of-bounds in exfat_fill_super() 2021-02-22 09:55:13 +09:00
fatent.c exfat: improve write performance when dirsync enabled 2021-04-27 20:45:06 +09:00
file.c exfat: add support ioctl and FITRIM function 2021-04-27 20:45:06 +09:00
inode.c exfat: improve write performance when dirsync enabled 2021-04-27 20:45:06 +09:00
Kconfig exfat: Improve wording of EXFAT_DEFAULT_IOCHARSET config option 2020-06-09 16:48:39 +09:00
Makefile exfat: add Kconfig and Makefile 2020-03-05 21:00:40 -05:00
misc.c exfat: write multiple sectors at once 2020-08-12 08:31:11 +09:00
namei.c exfat: speed up iterate/lookup by fixing start point of traversing cluster chain 2021-04-27 20:45:07 +09:00
nls.c exfat: Avoid allocating upcase table using kcalloc() 2020-12-22 12:31:17 +09:00
super.c exfat: avoid incorrectly releasing for root inode 2021-06-28 21:49:47 +09:00