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perf/core: Wire up compat PERF_EVENT_IOC_QUERY_BPF, PERF_EVENT_IOC_MODIFY_ATTRIBUTES
Since pointer size is different in compat, and switching in _perf_ioctl is done using exact ioctl numbers, all new ioctl numbers that use pointer should be added to perf_compat_ioctl for _IOC_SIZE fixup before passing to perf_ioctl routine (this shouldn't be needed if semantics of the size argument of _IO* macros was honored). Signed-off-by: Eugene Syromiatnikov <esyr@redhat.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Arnaldo Carvalho de Melo <acme@kernel.org> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Vince Weaver <vincent.weaver@maine.edu> Link: http://lkml.kernel.org/r/20180521123420.GA24291@asgard.redhat.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
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@ -5120,6 +5120,8 @@ static long perf_compat_ioctl(struct file *file, unsigned int cmd,
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switch (_IOC_NR(cmd)) {
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case _IOC_NR(PERF_EVENT_IOC_SET_FILTER):
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case _IOC_NR(PERF_EVENT_IOC_ID):
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case _IOC_NR(PERF_EVENT_IOC_QUERY_BPF):
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case _IOC_NR(PERF_EVENT_IOC_MODIFY_ATTRIBUTES):
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/* Fix up pointer size (usually 4 -> 8 in 32-on-64-bit case */
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if (_IOC_SIZE(cmd) == sizeof(compat_uptr_t)) {
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cmd &= ~IOCSIZE_MASK;
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