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ACPI: tools: pfrut: fix memory leak and resource leak in pfrut.c

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Static analysis found an issue in pfrut.c

cppcheck output before this patch:
tools/power/acpi/tools/pfrut/pfrut.c:225:3: error: Resource leak: fd_update [resourceLeak]
tools/power/acpi/tools/pfrut/pfrut.c:269:3: error: Resource leak: fd_update [resourceLeak]
tools/power/acpi/tools/pfrut/pfrut.c:269:3: error: Resource leak: fd_update_log [resourceLeak]
tools/power/acpi/tools/pfrut/pfrut.c:365:4: error: Memory leak: addr_map_capsule [memleak]
tools/power/acpi/tools/pfrut/pfrut.c:424:4: error: Memory leak: log_buf [memleak]

cppcheck output after this patch:
No resource leaks found

Fix by closing file descriptors and freeing allocated memory.

Signed-off-by: Malaya Kumar Rout <mrout@redhat.com>
Link: https://patch.msgid.link/20251120170001.251968-1-mrout@redhat.com
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This commit is contained in:
Malaya Kumar Rout
2025-11-20 22:29:58 +05:30
committed by Rafael J. Wysocki
parent ac3fd01e4c
commit 8974573ba4
1 changed files with 5 additions and 2 deletions
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7
tools/power/acpi/tools/pfrut/pfrut.c
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@@ -222,6 +222,7 @@ int main(int argc, char *argv[])
fd_update_log = open("/dev/acpi_pfr_telemetry0", O_RDWR);
if (fd_update_log < 0) {
printf("PFRT device not supported - Quit...\n");
close(fd_update);
return 1;
}
@@ -265,7 +266,8 @@ int main(int argc, char *argv[])
printf("chunk2_size:%d\n", data_info.chunk2_size);
printf("rollover_cnt:%d\n", data_info.rollover_cnt);
printf("reset_cnt:%d\n", data_info.reset_cnt);
close(fd_update);
close(fd_update_log);
return 0;
}
@@ -358,6 +360,7 @@ int main(int argc, char *argv[])
if (ret == -1) {
perror("Failed to load capsule file");
munmap(addr_map_capsule, st.st_size);
close(fd_capsule);
close(fd_update);
close(fd_update_log);
@@ -420,7 +423,7 @@ int main(int argc, char *argv[])
if (p_mmap == MAP_FAILED) {
perror("mmap error.");
close(fd_update_log);
free(log_buf);
return 1;
}