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| author | Sandeep Dhavale <dhavale@google.com> | 2024-06-25 00:02:05 +0200 |
|---|---|---|
| committer | Gao Xiang <hsiangkao@linux.alibaba.com> | 2024-06-26 11:02:15 +0200 |
| commit | 9d01f6f6d8b57131c74810739b9d65141062e4c0 (patch) | |
| tree | 17b3b7b0e3f4b37f06b7d579f5ca634f9b6e46a2 /fs | |
| parent | Linux 6.10-rc5 (diff) | |
| download | linux-9d01f6f6d8b57131c74810739b9d65141062e4c0.tar.xz linux-9d01f6f6d8b57131c74810739b9d65141062e4c0.zip | |
erofs: fix possible memory leak in z_erofs_gbuf_exit()
Because we incorrectly reused of variable `i` in `z_erofs_gbuf_exit()`
for inner loop, we may exit early from outer loop resulting in memory
leak. Fix this by using separate variable for iterating through inner loop.
Fixes: f36f3010f676 ("erofs: rename per-CPU buffers to global buffer pool and make it configurable")
Signed-off-by: Sandeep Dhavale <dhavale@google.com>
Reviewed-by: Gao Xiang <hsiangkao@linux.alibaba.com>
Reviewed-by: Chao Yu <chao@kernel.org>
Link: https://lore.kernel.org/r/20240624220206.3373197-1-dhavale@google.com
Signed-off-by: Gao Xiang <hsiangkao@linux.alibaba.com>
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/erofs/zutil.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/fs/erofs/zutil.c b/fs/erofs/zutil.c index 036024bce9f7..b80f612867c2 100644 --- a/fs/erofs/zutil.c +++ b/fs/erofs/zutil.c @@ -148,7 +148,7 @@ int __init z_erofs_gbuf_init(void) void z_erofs_gbuf_exit(void) { - int i; + int i, j; for (i = 0; i < z_erofs_gbuf_count + (!!z_erofs_rsvbuf); ++i) { struct z_erofs_gbuf *gbuf = &z_erofs_gbufpool[i]; @@ -161,9 +161,9 @@ void z_erofs_gbuf_exit(void) if (!gbuf->pages) continue; - for (i = 0; i < gbuf->nrpages; ++i) - if (gbuf->pages[i]) - put_page(gbuf->pages[i]); + for (j = 0; j < gbuf->nrpages; ++j) + if (gbuf->pages[j]) + put_page(gbuf->pages[j]); kfree(gbuf->pages); gbuf->pages = NULL; } |