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| author | Yin Xiujiang <yinxiujiang@kylinos.cn> | 2021-12-06 10:40:45 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2023-01-04 11:26:27 +0100 |
| commit | bf86a640a34947d92062996e1a75b9cd9d83dd19 (patch) | |
| tree | a84cd79a618389f38f69b0e21ec42d4236fc708f /tools/perf/scripts/python/export-to-sqlite.py | |
| parent | 5f225a9dc327ce099f97f2c02373374f5a258d6a (diff) | |
fs/ntfs3: Fix slab-out-of-bounds in r_page
[ Upstream commit ecfbd57cf9c5ca225184ae266ce44ae473792132 ]
When PAGE_SIZE is 64K, if read_log_page is called by log_read_rst for
the first time, the size of *buffer would be equal to
DefaultLogPageSize(4K).But for *buffer operations like memcpy,
if the memory area size(n) which being assigned to buffer is larger
than 4K (log->page_size(64K) or bytes(64K-page_off)), it will cause
an out of boundary error.
Call trace:
[...]
kasan_report+0x44/0x130
check_memory_region+0xf8/0x1a0
memcpy+0xc8/0x100
ntfs_read_run_nb+0x20c/0x460
read_log_page+0xd0/0x1f4
log_read_rst+0x110/0x75c
log_replay+0x1e8/0x4aa0
ntfs_loadlog_and_replay+0x290/0x2d0
ntfs_fill_super+0x508/0xec0
get_tree_bdev+0x1fc/0x34c
[...]
Fix this by setting variable r_page to NULL in log_read_rst.
Signed-off-by: Yin Xiujiang <yinxiujiang@kylinos.cn>
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'tools/perf/scripts/python/export-to-sqlite.py')
0 files changed, 0 insertions, 0 deletions