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Revert "runtime: get a better g0 stack bound in needm"

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This reverts CL 479915.

Reason for revert: breaks a lot google internal tests.

Change-Id: I13a9422e810af7ba58cbf4a7e6e55f4d8cc0ca51
Reviewed-on: https://go-review.googlesource.com/c/go/+/481055
Reviewed-by: Chressie Himpel <chressie@google.com>
Run-TryBot: Cherry Mui <cherryyz@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
This commit is contained in:
Cherry Mui 2023-03-31 18:29:10 +00:00
parent 092d43c329
commit 63ef9059a2
10 changed files with 7 additions and 182 deletions
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4
src/runtime/signal_unix.go
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@ -585,7 +585,7 @@ func adjustSignalStack(sig uint32, mp *m, gsigStack *gsignalStack) bool {
// sp is not within gsignal stack, g0 stack, or sigaltstack. Bad.
setg(nil)
needm(true)
needm()
if st.ss_flags&_SS_DISABLE != 0 {
noSignalStack(sig)
} else {
@ -1068,7 +1068,7 @@ func badsignal(sig uintptr, c *sigctxt) {
exit(2)
*(*uintptr)(unsafe.Pointer(uintptr(123))) = 2
}
needm(true)
needm()
if !sigsend(uint32(sig)) {
// A foreign thread received the signal sig, and the
// Go code does not want to handle it.