scripts/decode_stacktrace.sh: better support to ARM32 module stack trace

Sometimes there are special characters around module names in stack
traces, such as ARM32 with BACKTRACE_VERBOSE in "(%pS)" format, such as:
[<806e4845>] (dump_stack_lvl) from [<7f806013>] (hello_init+0x13/0x1000
[test])

In this case, $module will be "[test])", the trace can be decoded by
stripping the right parenthesis first: (dump_stack_lvl) from hello_init
(/foo/test.c:10) test.

Link: https://lkml.kernel.org/r/20240524042600.14738-3-xndchn@gmail.com
Signed-off-by: Xiong Nandi <xndchn@gmail.com>
Suggested-by: Elliot Berman <quic_eberman@quicinc.com>
Cc: Bjorn Andersson <quic_bjorande@quicinc.com>
Cc: Carlos Llamas <cmllamas@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

diff --git a/scripts/decode_stacktrace.sh b/scripts/decode_stacktrace.sh
index 2bc3a54ffba5cfe40173c83aee9c12adbcf25f11..a0f50a5b4f7c41ceab4026788d51e40e9bf9c9b8 100755 (executable)
--- a/scripts/decode_stacktrace.sh
+++ b/scripts/decode_stacktrace.sh
@@ -283,6 +283,9 @@ handle_line() {
 
        if [[ ${words[$last]} =~ \[([^]]+)\] ]]; then
                module=${words[$last]}
+               # some traces format is "(%pS)", which like "(foo+0x0/0x1 [bar])"
+               # so $module may like "[bar])". Strip the right parenthesis firstly
+               module=${module%\)}
                module=${module#\[}
                module=${module%\]}
                modbuildid=${module#* }