Re: [PATCH v2] perf ioctl: Add check for the sample_period value

Ravi Bangoria writes: > Peter / mpe, > > Is the v2 looks good? If so, can anyone of you please pick this up. I usually wouldn't take it, it's generic perf code. Unless peter/ingo/acme tell me otherwise. It's sort of a bug fix for 0819b2e30ccb, should it have a fixes and/or stable tag? Fixes:

Re: [PATCH v2] perf ioctl: Add check for the sample_period value

Peter / mpe, Is the v2 looks good? If so, can anyone of you please pick this up. On 6/4/19 9:59 AM, Ravi Bangoria wrote: > perf_event_open() limits the sample_period to 63 bits. See > commit 0819b2e30ccb ("perf: Limit perf_event_attr::sample_period > to 63 bits"). Make ioctl() consistent with it.

[PATCH v2] perf ioctl: Add check for the sample_period value

perf_event_open() limits the sample_period to 63 bits. See commit 0819b2e30ccb ("perf: Limit perf_event_attr::sample_period to 63 bits"). Make ioctl() consistent with it. Also on powerpc, negative sample_period could cause a recursive PMIs leading to a hang (reported when running perf-fuzzer). Si