https://bugs.kde.org/show_bug.cgi?id=368419
--- Comment #2 from Julian Seward <jsew...@acm.org> ---
Keno, thank you for the patch. It looks OK, apart from this fragment
+ case VKI_PERF_EVENT_IOC_SET_FILTER: {
+ char *filter = (char *)ARG3;
+ PRE_MEM_READ("ioctl(VKI_PERF_EVENT_IOC_SET_FILTER)",
+ (Addr)ARG3, VG_(strnlen)(filter, VKI_PAGE_SIZE)+1);
+ break;
+ }
If I interpret this correctly, ARG3 is a C style zero-terminated string that
the syscall
reads. Is that correct?
If so, there's already a macro for that: PRE_MEM_RASCIIZ. I think you want
something like PRE_MEM_RASCIIZ(ioctl(VKI_PERF_EVENT_IOC_SET_FILTER).filter",
ARG3).
Can you redo the patch and re-test it? Thanks.
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