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pointer safety

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Signed-off-by: Leah Rowe <leah@libreboot.org>
This commit is contained in:
Leah Rowe
2026-03-16 18:28:36 +00:00
parent 7b62a1653b
commit 5ce5ac2994
1 changed files with 2 additions and 7 deletions
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util/nvmutil/nvmutil.c
+2 -7
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@@ -2251,21 +2251,16 @@ long
rw_gbe_file_exact(int fd, unsigned char *mem, unsigned long nrw, rw_gbe_file_exact(int fd, unsigned char *mem, unsigned long nrw,
off_t off, int rw_type) off_t off, int rw_type)
{ {
unsigned long mem_addr;
unsigned long buf_addr;
long r; long r;
if (io_args(fd, mem, nrw, off, rw_type) == -1) if (io_args(fd, mem, nrw, off, rw_type) == -1)
return -1; return -1;
mem_addr = (unsigned long)(void *)mem;
buf_addr = (unsigned long)(void *)buf;
if (mem != (void *)pad) { if (mem != (void *)pad) {
if (mem_addr < buf_addr) if (mem < buf)
goto err_rw_gbe_file_exact; goto err_rw_gbe_file_exact;
if ((mem_addr - buf_addr) >= (unsigned long)GBE_WORK_SIZE) if ((unsigned long)(mem - buf) >= GBE_WORK_SIZE)
goto err_rw_gbe_file_exact; goto err_rw_gbe_file_exact;
} }