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runtime: add check for malloc in a signal handler

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Change-Id: Ic8ebbe81eb788626c01bfab238d54236e6e5ef2b
Reviewed-on: https://go-review.googlesource.com/9964
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Russ Cox <rsc@golang.org>
This commit is contained in:
Brad Fitzpatrick 2015-05-12 10:01:37 -07:00
parent d447279927
commit 6f2c0f1585
1 changed files with 3 additions and 0 deletions
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3
src/runtime/malloc.go
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@ -509,6 +509,9 @@ func mallocgc(size uintptr, typ *_type, flags uint32) unsafe.Pointer {
if mp.mallocing != 0 {
throw("malloc deadlock")
}
if mp.gsignal == getg() {
throw("malloc during signal")
}
mp.mallocing = 1
shouldhelpgc := false