fix: verifier error on arm due to register reuse (#2024)

AsafEitani · web-flow · commit d2d00619b9f5 · 2022-07-28T17:50:05.000+03:00
diff --git a/pkg/ebpf/c/tracee.bpf.c b/pkg/ebpf/c/tracee.bpf.c
@@ -1628,7 +1628,7 @@ static __always_inline int should_trace(event_data_t *data)
 
 static __always_inline int should_submit(u32 event_id, config_entry_t *config)
 {
-    unsigned int index = event_id / 8;
+    volatile unsigned int index = event_id / 8;
     unsigned int offset = event_id % 8;
     u8 bitmap = config->events_to_submit[index % 128];
 

Original file line number	Diff line number	Diff line change
`@@ -1628,7 +1628,7 @@ static __always_inline int should_trace(event_data_t *data)`
`1628`	`1628`
`1629`	`1629`	`static __always_inline int should_submit(u32 event_id, config_entry_t *config)`
`1630`	`1630`	`{`
`1631`		`- unsigned int index = event_id / 8;`
	`1631`	`+ volatile unsigned int index = event_id / 8;`
`1632`	`1632`	`unsigned int offset = event_id % 8;`
`1633`	`1633`	`u8 bitmap = config->events_to_submit[index % 128];`
`1634`	`1634`