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lmkd: Fix a potential buffer overflow am: 5ebc4e8f51 

Original change: https://android-review.googlesource.com/c/platform/system/memory/lmkd/+/1972105

Change-Id: I4dca955fd118a16fc3bd1a37beeb8fe317bcbcc2
This commit is contained in:
Bart Van Assche 2022-02-23 18:55:06 +00:00 committed by Automerger Merge Worker
parent f9489027a1 5ebc4e8f51
commit 75a98b56ab
1 changed files with 1 additions and 1 deletions
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lmkd.cpp
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@ -835,7 +835,7 @@ static void poll_kernel(int poll_fd) {
while (1) { while (1) {
char rd_buf[256]; char rd_buf[256];
int bytes_read = TEMP_FAILURE_RETRY(pread(poll_fd, (void*)rd_buf, sizeof(rd_buf), 0)); int bytes_read = TEMP_FAILURE_RETRY(pread(poll_fd, (void*)rd_buf, sizeof(rd_buf) - 1, 0));
if (bytes_read <= 0) break; if (bytes_read <= 0) break;
rd_buf[bytes_read] = '\0'; rd_buf[bytes_read] = '\0';