recordmcount: Fix memory leaks in the uwrite function
[ Upstream commit fa359d0685
]
Common realloc mistake: 'file_append' nulled but not freed upon failure
Link: https://lkml.kernel.org/r/20230426010527.703093-1-zenghao@kylinos.cn
Signed-off-by: Hao Zeng <zenghao@kylinos.cn>
Suggested-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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f3458b84c6
Коммит
ff70ad9159
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@ -102,6 +102,7 @@ static ssize_t uwrite(void const *const buf, size_t const count)
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{
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size_t cnt = count;
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off_t idx = 0;
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void *p = NULL;
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file_updated = 1;
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@ -109,7 +110,10 @@ static ssize_t uwrite(void const *const buf, size_t const count)
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off_t aoffset = (file_ptr + count) - file_end;
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if (aoffset > file_append_size) {
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file_append = realloc(file_append, aoffset);
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p = realloc(file_append, aoffset);
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if (!p)
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free(file_append);
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file_append = p;
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file_append_size = aoffset;
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}
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if (!file_append) {
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