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authorMiguel Ojeda <ojeda@kernel.org>2021-12-05 19:00:43 +0100
committerMiguel Ojeda <ojeda@kernel.org>2022-09-28 09:01:40 +0200
commit99115db4ecc87af73415939439ec604ea0531e6f (patch)
treeb3a9727cd1bac24375bed2c88e1a4a58e0742a4d
parentd1d84b5f73888ccb9fc148dfc3cb3e15d3604d65 (diff)
scripts: decode_stacktrace: demangle Rust symbols
Recent versions of both Binutils (`c++filt`) and LLVM (`llvm-cxxfilt`) provide Rust v0 mangling support. Reviewed-by: Kees Cook <keescook@chromium.org> Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Co-developed-by: Alex Gaynor <alex.gaynor@gmail.com> Signed-off-by: Alex Gaynor <alex.gaynor@gmail.com> Co-developed-by: Wedson Almeida Filho <wedsonaf@google.com> Signed-off-by: Wedson Almeida Filho <wedsonaf@google.com> Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
-rwxr-xr-xscripts/decode_stacktrace.sh14
1 files changed, 14 insertions, 0 deletions
diff --git a/scripts/decode_stacktrace.sh b/scripts/decode_stacktrace.sh
index 7075e26ab2c4..564c5632e1a2 100755
--- a/scripts/decode_stacktrace.sh
+++ b/scripts/decode_stacktrace.sh
@@ -8,6 +8,14 @@ usage() {
echo " $0 -r <release> | <vmlinux> [<base path>|auto] [<modules path>]"
}
+# Try to find a Rust demangler
+if type llvm-cxxfilt >/dev/null 2>&1 ; then
+ cppfilt=llvm-cxxfilt
+elif type c++filt >/dev/null 2>&1 ; then
+ cppfilt=c++filt
+ cppfilt_opts=-i
+fi
+
if [[ $1 == "-r" ]] ; then
vmlinux=""
basepath="auto"
@@ -180,6 +188,12 @@ parse_symbol() {
# In the case of inlines, move everything to same line
code=${code//$'\n'/' '}
+ # Demangle if the name looks like a Rust symbol and if
+ # we got a Rust demangler
+ if [[ $name =~ ^_R && $cppfilt != "" ]] ; then
+ name=$("$cppfilt" "$cppfilt_opts" "$name")
+ fi
+
# Replace old address with pretty line numbers
symbol="$segment$name ($code)"
}