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| author | Gao Xiang <hsiangkao@linux.alibaba.com> | 2026-04-20 11:46:12 +0800 |
|---|---|---|
| committer | Gao Xiang <hsiangkao@linux.alibaba.com> | 2026-04-21 16:56:08 +0800 |
| commit | c99493ce409c3b98fec1616dbcf24c102e006deb (patch) | |
| tree | f1c95ff458339673a37b504a6af6bb10827fa3c8 /tools/lib/python | |
| parent | d18a3b5d337fa412a38e776e6b4b857a58836575 (diff) | |
erofs: fix offset truncation when shifting pgoff on 32-bit platforms
On 32-bit platforms, pgoff_t is 32 bits wide, so left-shifting
large arbitrary pgoff_t values by PAGE_SHIFT performs 32-bit arithmetic
and silently truncates the result for pages beyond the 4 GiB boundary.
Cast the page index to loff_t before shifting to produce a correct
64-bit byte offset.
Fixes: 386292919c25 ("erofs: introduce readmore decompression strategy")
Fixes: 307210c262a2 ("erofs: verify metadata accesses for file-backed mounts")
Reviewed-by: Chao Yu <chao@kernel.org>
Signed-off-by: Gao Xiang <hsiangkao@linux.alibaba.com>
Diffstat (limited to 'tools/lib/python')
0 files changed, 0 insertions, 0 deletions