From: Michael Pratt <mpratt@google.com>
Date: Tue, 20 Jun 2023 18:22:35 +0000 (-0400)
Subject: runtime: print fault addr in fatalsignal
X-Git-Tag: go1.22rc1~779
X-Git-Url: http://www.git.cypherpunks.su/?a=commitdiff_plain;h=c4af8abae11841d20dfa495a62acc96e5f701f4a;p=gostls13.git

runtime: print fault addr in fatalsignal

Fixes #60894.

Change-Id: I2e97c9ed527395303548bebe68ca7764e43132d1
Reviewed-on: https://go-review.googlesource.com/c/go/+/504635
Reviewed-by: Cherry Mui <cherryyz@google.com>
Reviewed-by: Michael Knyszek <mknyszek@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
---

diff --git a/src/runtime/signal_unix.go b/src/runtime/signal_unix.go
index 9a3f18bc14..1423923e06 100644
--- a/src/runtime/signal_unix.go
+++ b/src/runtime/signal_unix.go
@@ -788,7 +788,11 @@ func fatalsignal(sig uint32, c *sigctxt, gp *g, mp *m) *g {
 		exit(2)
 	}
 
-	print("PC=", hex(c.sigpc()), " m=", mp.id, " sigcode=", c.sigcode(), "\n")
+	print("PC=", hex(c.sigpc()), " m=", mp.id, " sigcode=", c.sigcode())
+	if sig == _SIGSEGV || sig == _SIGBUS {
+		print(" addr=", hex(c.fault()))
+	}
+	print("\n")
 	if mp.incgo && gp == mp.g0 && mp.curg != nil {
 		print("signal arrived during cgo execution\n")
 		// Switch to curg so that we get a traceback of the Go code