diff options
author | Alan Donovan <adonovan@google.com> | 2013-02-14 23:37:14 -0500 |
---|---|---|
committer | Alan Donovan <adonovan@google.com> | 2013-02-14 23:37:14 -0500 |
commit | f42fb9962b7e786587c1772a73a2bdcfc8a797e7 (patch) | |
tree | ef5917c11c1c718c221904f2a3f84cd026beaea8 | |
parent | c2edee0c908c1dfaccebc50d9ddaba2cd022d799 (diff) | |
download | go-f42fb9962b7e786587c1772a73a2bdcfc8a797e7.tar.gz |
runtime: expand error for signal received on non-Go thread.
We call runtime.findnull dynamically to avoid exceeding the
static nosplit stack limit check. (Thanks minux!)
Fixes issue 4048.
R=rsc, minux.ma, ality
CC=golang-dev
https://codereview.appspot.com/7232066
Committer: Russ Cox <rsc@golang.org>
-rw-r--r-- | src/pkg/runtime/thread_darwin.c | 8 | ||||
-rw-r--r-- | src/pkg/runtime/thread_freebsd.c | 8 | ||||
-rw-r--r-- | src/pkg/runtime/thread_linux.c | 8 | ||||
-rw-r--r-- | src/pkg/runtime/thread_netbsd.c | 8 | ||||
-rw-r--r-- | src/pkg/runtime/thread_openbsd.c | 8 |
5 files changed, 35 insertions, 5 deletions
diff --git a/src/pkg/runtime/thread_darwin.c b/src/pkg/runtime/thread_darwin.c index ab3257572..0758d6858 100644 --- a/src/pkg/runtime/thread_darwin.c +++ b/src/pkg/runtime/thread_darwin.c @@ -497,7 +497,7 @@ runtime·badcallback(void) runtime·write(2, badcallback, sizeof badcallback - 1); } -static int8 badsignal[] = "runtime: signal received on thread not created by Go.\n"; +static int8 badsignal[] = "runtime: signal received on thread not created by Go: "; // This runs on a foreign stack, without an m or a g. No stack split. #pragma textflag 7 @@ -508,5 +508,11 @@ runtime·badsignal(int32 sig) return; // Ignore SIGPROFs intended for a non-Go thread. } runtime·write(2, badsignal, sizeof badsignal - 1); + if (0 <= sig && sig < NSIG) { + // Call runtime·findnull dynamically to circumvent static stack size check. + static int32 (*findnull)(byte*) = runtime·findnull; + runtime·write(2, runtime·sigtab[sig].name, findnull((byte*)runtime·sigtab[sig].name)); + } + runtime·write(2, "\n", 1); runtime·exit(1); } diff --git a/src/pkg/runtime/thread_freebsd.c b/src/pkg/runtime/thread_freebsd.c index 54c26215a..eba794cb3 100644 --- a/src/pkg/runtime/thread_freebsd.c +++ b/src/pkg/runtime/thread_freebsd.c @@ -206,7 +206,7 @@ runtime·badcallback(void) runtime·write(2, badcallback, sizeof badcallback - 1); } -static int8 badsignal[] = "runtime: signal received on thread not created by Go.\n"; +static int8 badsignal[] = "runtime: signal received on thread not created by Go: "; // This runs on a foreign stack, without an m or a g. No stack split. #pragma textflag 7 @@ -217,5 +217,11 @@ runtime·badsignal(int32 sig) return; // Ignore SIGPROFs intended for a non-Go thread. } runtime·write(2, badsignal, sizeof badsignal - 1); + if (0 <= sig && sig < NSIG) { + // Call runtime·findnull dynamically to circumvent static stack size check. + static int32 (*findnull)(byte*) = runtime·findnull; + runtime·write(2, runtime·sigtab[sig].name, findnull((byte*)runtime·sigtab[sig].name)); + } + runtime·write(2, "\n", 1); runtime·exit(1); } diff --git a/src/pkg/runtime/thread_linux.c b/src/pkg/runtime/thread_linux.c index dc8cad57a..778b9078b 100644 --- a/src/pkg/runtime/thread_linux.c +++ b/src/pkg/runtime/thread_linux.c @@ -256,7 +256,7 @@ runtime·badcallback(void) runtime·write(2, badcallback, sizeof badcallback - 1); } -static int8 badsignal[] = "runtime: signal received on thread not created by Go.\n"; +static int8 badsignal[] = "runtime: signal received on thread not created by Go: "; // This runs on a foreign stack, without an m or a g. No stack split. #pragma textflag 7 @@ -267,5 +267,11 @@ runtime·badsignal(int32 sig) return; // Ignore SIGPROFs intended for a non-Go thread. } runtime·write(2, badsignal, sizeof badsignal - 1); + if (0 <= sig && sig < NSIG) { + // Call runtime·findnull dynamically to circumvent static stack size check. + static int32 (*findnull)(byte*) = runtime·findnull; + runtime·write(2, runtime·sigtab[sig].name, findnull((byte*)runtime·sigtab[sig].name)); + } + runtime·write(2, "\n", 1); runtime·exit(1); } diff --git a/src/pkg/runtime/thread_netbsd.c b/src/pkg/runtime/thread_netbsd.c index 4d174a537..cf66d9c79 100644 --- a/src/pkg/runtime/thread_netbsd.c +++ b/src/pkg/runtime/thread_netbsd.c @@ -252,7 +252,7 @@ runtime·badcallback(void) runtime·write(2, badcallback, sizeof badcallback - 1); } -static int8 badsignal[] = "runtime: signal received on thread not created by Go.\n"; +static int8 badsignal[] = "runtime: signal received on thread not created by Go: "; // This runs on a foreign stack, without an m or a g. No stack split. #pragma textflag 7 @@ -263,5 +263,11 @@ runtime·badsignal(int32 sig) return; // Ignore SIGPROFs intended for a non-Go thread. } runtime·write(2, badsignal, sizeof badsignal - 1); + if (0 <= sig && sig < NSIG) { + // Call runtime·findnull dynamically to circumvent static stack size check. + static int32 (*findnull)(byte*) = runtime·findnull; + runtime·write(2, runtime·sigtab[sig].name, findnull((byte*)runtime·sigtab[sig].name)); + } + runtime·write(2, "\n", 1); runtime·exit(1); } diff --git a/src/pkg/runtime/thread_openbsd.c b/src/pkg/runtime/thread_openbsd.c index 57f64cf58..fd42f28e8 100644 --- a/src/pkg/runtime/thread_openbsd.c +++ b/src/pkg/runtime/thread_openbsd.c @@ -229,7 +229,7 @@ runtime·badcallback(void) runtime·write(2, badcallback, sizeof badcallback - 1); } -static int8 badsignal[] = "runtime: signal received on thread not created by Go.\n"; +static int8 badsignal[] = "runtime: signal received on thread not created by Go: "; // This runs on a foreign stack, without an m or a g. No stack split. #pragma textflag 7 @@ -240,5 +240,11 @@ runtime·badsignal(int32 sig) return; // Ignore SIGPROFs intended for a non-Go thread. } runtime·write(2, badsignal, sizeof badsignal - 1); + if (0 <= sig && sig < NSIG) { + // Call runtime·findnull dynamically to circumvent static stack size check. + static int32 (*findnull)(byte*) = runtime·findnull; + runtime·write(2, runtime·sigtab[sig].name, findnull((byte*)runtime·sigtab[sig].name)); + } + runtime·write(2, "\n", 1); runtime·exit(1); } |