diff --git a/trunk/doc/CHANGELOG.md b/trunk/doc/CHANGELOG.md
index 486320cfa2..326f84b889 100644
--- a/trunk/doc/CHANGELOG.md
+++ b/trunk/doc/CHANGELOG.md
@@ -8,6 +8,7 @@ The changelog for SRS.
 
 ## SRS 6.0 Changelog
 
+* v6.0, 2023-03-27, Merge [#3450](https://github.com/ossrs/srs/pull/3450): WebRTC: Error message carries the SDP when failed. v6.0.39 (#3450)
 * v6.0, 2023-03-25, Merge [#3477](https://github.com/ossrs/srs/pull/3477): Remove unneccessary NULL check in srs_freep. v6.0.38 (#3477)
 * v6.0, 2023-03-25, Merge [#3455](https://github.com/ossrs/srs/pull/3455): RTC: Call on_play before create session, for it might be freed for timeout. v6.0.37 (#3455)
 * v6.0, 2023-03-22, Merge [#3427](https://github.com/ossrs/srs/pull/3427): WHIP: Support DELETE resource for Larix Broadcaster. v6.0.36 (#3427)
@@ -52,6 +53,7 @@ The changelog for SRS.
 
 ## SRS 5.0 Changelog
 
+* v5.0, 2023-03-27, Merge [#3450](https://github.com/ossrs/srs/pull/3450): WebRTC: Error message carries the SDP when failed. v5.0.151 (#3450)
 * v5.0, 2023-03-25, Merge [#3477](https://github.com/ossrs/srs/pull/3477): Remove unneccessary NULL check in srs_freep. v5.0.150 (#3477)
 * v5.0, 2023-03-25, Merge [#3455](https://github.com/ossrs/srs/pull/3455): RTC: Call on_play before create session, for it might be freed for timeout. v5.0.149 (#3455)
 * v5.0, 2023-03-22, Merge [#3427](https://github.com/ossrs/srs/pull/3427): WHIP: Support DELETE resource for Larix Broadcaster. v5.0.148 (#3427)
diff --git a/trunk/src/app/srs_app_rtc_conn.cpp b/trunk/src/app/srs_app_rtc_conn.cpp
index 5de101efe6..933010eec6 100644
--- a/trunk/src/app/srs_app_rtc_conn.cpp
+++ b/trunk/src/app/srs_app_rtc_conn.cpp
@@ -1896,7 +1896,7 @@ srs_error_t SrsRtcConnection::add_publisher(SrsRtcUserConfig* ruc, SrsSdp& local
 
     // TODO: FIXME: Change to api of stream desc.
     if ((err = negotiate_publish_capability(ruc, stream_desc)) != srs_success) {
-        return srs_error_wrap(err, "publish negotiate, offer=%s", ruc->remote_sdp_str_.c_str());
+        return srs_error_wrap(err, "publish negotiate, offer=%s", srs_string_replace(ruc->remote_sdp_str_.c_str(), "\r\n", "\\r\\n").c_str());
     }
 
     if ((err = generate_publish_local_sdp(req, local_sdp, stream_desc, ruc->remote_sdp_.is_unified(), ruc->audio_before_video_)) != srs_success) {
@@ -1935,7 +1935,7 @@ srs_error_t SrsRtcConnection::add_player(SrsRtcUserConfig* ruc, SrsSdp& local_sd
 
     std::map<uint32_t, SrsRtcTrackDescription*> play_sub_relations;
     if ((err = negotiate_play_capability(ruc, play_sub_relations)) != srs_success) {
-        return srs_error_wrap(err, "play negotiate, offer=%s", ruc->remote_sdp_str_.c_str());
+        return srs_error_wrap(err, "play negotiate, offer=%s", srs_string_replace(ruc->remote_sdp_str_.c_str(), "\r\n", "\\r\\n").c_str());
     }
 
     if (!play_sub_relations.size()) {
diff --git a/trunk/src/core/srs_core_version5.hpp b/trunk/src/core/srs_core_version5.hpp
index 213fce72c4..2231275639 100644
--- a/trunk/src/core/srs_core_version5.hpp
+++ b/trunk/src/core/srs_core_version5.hpp
@@ -9,6 +9,6 @@
 
 #define VERSION_MAJOR       5
 #define VERSION_MINOR       0
-#define VERSION_REVISION    150
+#define VERSION_REVISION    151
 
 #endif
diff --git a/trunk/src/core/srs_core_version6.hpp b/trunk/src/core/srs_core_version6.hpp
index 0250b88e74..5971215ea6 100644
--- a/trunk/src/core/srs_core_version6.hpp
+++ b/trunk/src/core/srs_core_version6.hpp
@@ -9,6 +9,6 @@
 
 #define VERSION_MAJOR       6
 #define VERSION_MINOR       0
-#define VERSION_REVISION    38
+#define VERSION_REVISION    39
 
 #endif
diff --git a/trunk/src/kernel/srs_kernel_error.cpp b/trunk/src/kernel/srs_kernel_error.cpp
index c6d548c9b3..5b676ae314 100644
--- a/trunk/src/kernel/srs_kernel_error.cpp
+++ b/trunk/src/kernel/srs_kernel_error.cpp
@@ -19,6 +19,8 @@
 #include <vector>
 using namespace std;
 
+const int maxLogBuf = 4 * 1024 * 1024;
+
 #if defined(SRS_BACKTRACE) && defined(__linux)
 #include <execinfo.h>
 #include <dlfcn.h>
@@ -264,8 +266,8 @@ SrsCplxError* SrsCplxError::create(const char* func, const char* file, int line,
 
     va_list ap;
     va_start(ap, fmt);
-    static char buffer[4096];
-    int r0 = vsnprintf(buffer, sizeof(buffer), fmt, ap);
+    static char* buffer = new char[maxLogBuf];
+    int r0 = vsnprintf(buffer, maxLogBuf, fmt, ap);
     va_end(ap);
     
     SrsCplxError* err = new SrsCplxError();
@@ -275,7 +277,7 @@ SrsCplxError* SrsCplxError::create(const char* func, const char* file, int line,
     err->line = line;
     err->code = code;
     err->rerrno = rerrno;
-    if (r0 > 0 && r0 < (int)sizeof(buffer)) {
+    if (r0 > 0 && r0 < maxLogBuf) {
         err->msg = string(buffer, r0);
     }
     err->wrapped = NULL;
@@ -291,8 +293,8 @@ SrsCplxError* SrsCplxError::wrap(const char* func, const char* file, int line, S
     
     va_list ap;
     va_start(ap, fmt);
-    static char buffer[4096];
-    int r0 = vsnprintf(buffer, sizeof(buffer), fmt, ap);
+    static char* buffer = new char[maxLogBuf];
+    int r0 = vsnprintf(buffer, maxLogBuf, fmt, ap);
     va_end(ap);
     
     SrsCplxError* err = new SrsCplxError();
@@ -304,7 +306,7 @@ SrsCplxError* SrsCplxError::wrap(const char* func, const char* file, int line, S
         err->code = v->code;
     }
     err->rerrno = rerrno;
-    if (r0 > 0 && r0 < (int)sizeof(buffer)) {
+    if (r0 > 0 && r0 < maxLogBuf) {
         err->msg = string(buffer, r0);
     }
     err->wrapped = v;