Merge pull request #1517 from iovisor/yhs_dev

fix a verifier failure

Merge pull request #1517 from iovisor/yhs_dev
fix a verifier failure
2d45e02f · 4ast · GitHub · 20f1fda7 · 0cfd665b · 2d45e02f
Commit 2d45e02f authored Jan 08, 2018 by 4ast Committed by GitHub Jan 08, 2018
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src/cc/export/helpers.h src/cc/export/helpers.h +3 -3

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--- a/src/cc/export/helpers.h
+++ b/src/cc/export/helpers.h
@@ -598,14 +598,14 @@ int tracepoint__##category##__##event(struct tracepoint__##category##__##event *

 #define TP_DATA_LOC_READ_CONST(dst, field, length)                        \
        do {                                                              \
-            short __offset = args->data_loc_##field & 0xFFFF;             \
+            unsigned short __offset = args->data_loc_##field & 0xFFFF;    \
            bpf_probe_read((void *)dst, length, (char *)args + __offset); \
        } while (0);

 #define TP_DATA_LOC_READ(dst, field)                                        \
        do {                                                                \
-            short __offset = args->data_loc_##field & 0xFFFF;               \
-            short __length = args->data_loc_##field >> 16;                  \
+            unsigned short __offset = args->data_loc_##field & 0xFFFF;      \
+            unsigned short __length = args->data_loc_##field >> 16;         \
            bpf_probe_read((void *)dst, __length, (char *)args + __offset); \
        } while (0);