bugfix

cb50fcae · Nickolai Zeldovich · 72a20b37 · cb50fcae
--- a/kernel/sampler.cc
+++ b/kernel/sampler.cc
@@ -199,7 +199,7 @@ sampread(struct inode *ip, char *dst, u32 off, u32 n)

    cc = MIN(LOGHEADER_SZ-off, n);
    memmove(dst, (char*)hdr + off, cc);
-    kmfree(hdr, len);
+    kmfree(hdr, LOGHEADER_SZ);

    n -= cc;
    ret += cc;