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Vince reported that its possible to overflow the various size fields and get weird stuff if you stick too many events in a group. Put a lid on this by requiring the fixed record size not exceed 16k. This is still a fair amount of events (silly amount really) and leaves plenty room for callchains and stack dwarves while also avoiding overflowing the u16 variables. Reported-by: Vince Weaver <[email protected]> Signed-off-by: Peter Zijlstra (Intel) <[email protected]> Cc: Linus Torvalds <[email protected]> Cc: Peter Zijlstra <[email protected]> Cc: Thomas Gleixner <[email protected]> Cc: [email protected] Signed-off-by: Ingo Molnar <[email protected]>
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Peter Zijlstra
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Ingo Molnar
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Sep 18, 2015
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