diff options
Diffstat (limited to 'arch/sparc/boot/piggyback.c')
| -rw-r--r-- | arch/sparc/boot/piggyback.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/arch/sparc/boot/piggyback.c b/arch/sparc/boot/piggyback.c index a7a38fb4ece0..6d74064add0a 100644 --- a/arch/sparc/boot/piggyback.c +++ b/arch/sparc/boot/piggyback.c @@ -154,6 +154,10 @@ static off_t get_hdrs_offset(int kernelfd, const char *filename) offset -= LOOKBACK; /* skip a.out header */ offset += AOUT_TEXT_OFFSET; + if (offset < 0) { + errno = -EINVAL; + die("Calculated a negative offset, probably elftoaout generated an invalid image. Did you use a recent elftoaout ?"); + } if (lseek(kernelfd, offset, SEEK_SET) < 0) die("lseek"); if (read(kernelfd, buffer, BUFSIZE) != BUFSIZE) |