| commit | bfeda9188a054efdb950c9c9727d6bce7ad04961 | [log] [tgz] |
|---|---|---|
| author | Russ Cox <rsc@golang.org> | Wed Jan 14 14:57:10 2015 -0500 |
| committer | Russ Cox <rsc@golang.org> | Wed Jan 14 20:28:08 2015 +0000 |
| tree | 6fb4a978404ca3618e5e473d428d63c016c0a726 | |
| parent | 3be0a0ef6fb80d099aefdba67b68df3b500188bc [diff] |
runtime: fix accounting race in printlock It could happen that mp.printlock++ happens, then on entry to lock, the goroutine is preempted and then rescheduled onto another m for the actual call to lock. Now the lock and the printlock++ have happened on different m's. This can lead to printlock not being unlocked, which either gives a printing deadlock or a crash when the goroutine reschedules, because m.locks > 0. Change-Id: Ib0c08740e1b53de3a93f7ebf9b05f3dceff48b9f Reviewed-on: https://go-review.googlesource.com/2819 Reviewed-by: Rick Hudson <rlh@golang.org>
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