5 files changed, 24 insertions, 1 deletions
diff --git a/src/ci/docker/host-x86_64/dist-arm-linux/Dockerfile b/src/ci/docker/host-x86_64/dist-arm-linux/Dockerfile
index 1be3fecd88f..61cc000dca5 100644
--- a/src/ci/docker/host-x86_64/dist-arm-linux/Dockerfile
+++ b/src/ci/docker/host-x86_64/dist-arm-linux/Dockerfile
@@ -8,6 +8,7 @@ RUN sh /scripts/crosstool-ng-1.24.sh
 
 WORKDIR /build
 
+COPY scripts/musl-patch-configure.diff /build/
 COPY scripts/musl-toolchain.sh /build/
 # We need to mitigate rust-lang/rust#34978 when compiling musl itself as well
 RUN CFLAGS="-Wa,--compress-debug-sections=none -Wl,--compress-debug-sections=none" \
diff --git a/src/ci/docker/host-x86_64/dist-x86_64-musl/Dockerfile b/src/ci/docker/host-x86_64/dist-x86_64-musl/Dockerfile
index ea70771a570..ef49904b53d 100644
--- a/src/ci/docker/host-x86_64/dist-x86_64-musl/Dockerfile
+++ b/src/ci/docker/host-x86_64/dist-x86_64-musl/Dockerfile
@@ -24,6 +24,7 @@ WORKDIR /build/
 COPY scripts/cmake.sh /scripts/
 RUN /scripts/cmake.sh
 
+COPY scripts/musl-patch-configure.diff /build/
 COPY scripts/musl-toolchain.sh /build/
 # We need to mitigate rust-lang/rust#34978 when compiling musl itself as well
 RUN CFLAGS="-Wa,-mrelax-relocations=no -Wa,--compress-debug-sections=none -Wl,--compress-debug-sections=none" \
diff --git a/src/ci/docker/host-x86_64/test-various/Dockerfile b/src/ci/docker/host-x86_64/test-various/Dockerfile
index 4d4953fa0e2..4d554a2852a 100644
--- a/src/ci/docker/host-x86_64/test-various/Dockerfile
+++ b/src/ci/docker/host-x86_64/test-various/Dockerfile
@@ -22,6 +22,7 @@ RUN curl -sL https://nodejs.org/dist/v15.14.0/node-v15.14.0-linux-x64.tar.xz | \
   tar -xJ
 
 WORKDIR /build/
+COPY scripts/musl-patch-configure.diff /build/
 COPY scripts/musl-toolchain.sh /build/
 RUN bash musl-toolchain.sh x86_64 && rm -rf build
 WORKDIR /
diff --git a/src/ci/docker/scripts/musl-patch-configure.diff b/src/ci/docker/scripts/musl-patch-configure.diff
new file mode 100644
index 00000000000..6e106b4504b
--- /dev/null
+++ b/src/ci/docker/scripts/musl-patch-configure.diff
@@ -0,0 +1,13 @@
+diff --git a/configure b/configure
+index 86801281..ed2f7998 100755
+--- a/configure
++++ b/configure
+@@ -398,7 +398,7 @@ test "$debug" = yes && CFLAGS_AUTO=-g
+ #
+ printf "checking whether we should preprocess assembly to add debugging information... "
+ if fnmatch '-g*|*\ -g*' "$CFLAGS_AUTO $CFLAGS" &&
+-   test -f "tools/add-cfi.$ARCH.awk" &&
++   test -f "$srcdir/tools/add-cfi.$ARCH.awk" &&
+    printf ".file 1 \"srcfile.s\"\n.line 1\n.cfi_startproc\n.cfi_endproc" | $CC -g -x assembler -c -o /dev/null 2>/dev/null -
+ then
+   ADD_CFI=yes
diff --git a/src/ci/docker/scripts/musl-toolchain.sh b/src/ci/docker/scripts/musl-toolchain.sh
index 59fc921ec26..3c17f316d1f 100644
--- a/src/ci/docker/scripts/musl-toolchain.sh
+++ b/src/ci/docker/scripts/musl-toolchain.sh
@@ -38,13 +38,20 @@ shift
 
 # Ancient binutils versions don't understand debug symbols produced by more recent tools.
 # Apparently applying `-fPIC` everywhere allows them to link successfully.
-export CFLAGS="-fPIC $CFLAGS"
+# Enable debug info. If we don't do so, users can't debug into musl code,
+# debuggers can't walk the stack, etc. Fixes #90103.
+export CFLAGS="-fPIC -g1 $CFLAGS"
 
 git clone https://github.com/richfelker/musl-cross-make # -b v0.9.9
 cd musl-cross-make
 # A few commits ahead of v0.9.9 to include the cowpatch fix:
 git checkout a54eb56f33f255dfca60be045f12a5cfaf5a72a9
 
+# Fix the cfi detection script in musl's configure so cfi is generated
+# when debug info is asked for.
+mkdir patches/musl-1.1.24
+cp ../musl-patch-configure.diff patches/musl-1.1.24/0001-fix-cfi-detection.diff
+
 hide_output make -j$(nproc) TARGET=$TARGET MUSL_VER=1.1.24 LINUX_HEADERS_SITE=$LINUX_HEADERS_SITE
 hide_output make install TARGET=$TARGET MUSL_VER=1.1.24 LINUX_HEADERS_SITE=$LINUX_HEADERS_SITE OUTPUT=$OUTPUT