pkg/report: include partially stripped prefixes to alt titles

It will help avoid bug duplication in case of adding new prefixes to
strip.

42 files changed, 204 insertions, 40 deletions

diff --git a/pkg/report/linux.go b/pkg/report/linux.go
index 598543e6b..63236fe41 100644
--- a/pkg/report/linux.go
+++ b/pkg/report/linux.go
@@ -917,7 +917,7 @@ func (ctx *linux) setExecutorInfo(rep *Report) {
 	rep.Executor = info
 }
 
-func linuxStallFrameExtractor(frames []string) string {
+func linuxStallFrameExtractor(frames []string) (string, int) {
 	// During rcu stalls and cpu lockups kernel loops in some part of code,
 	// usually across several functions. When the stall is detected, traceback
 	// points to a random stack within the looping code. We generally take
@@ -929,22 +929,23 @@ func linuxStallFrameExtractor(frames []string) string {
 	// However, for highly discriminated functions syscalls like ioctl/read/write/connect
 	// we take the previous function (e.g. for connect the one that points to exact
 	// protocol, or for ioctl the one that is related to the device).
-	prev := frames[0]
-	for _, frame := range frames {
+	prev, prevIdx := frames[0], 0
+	for i, frame := range frames {
 		if matchesAny([]byte(frame), linuxStallAnchorFrames) {
 			if strings.Contains(frame, "smp_call_function") {
 				// In this case we want this function rather than the previous one
 				// (there can be several variations on the next one).
 				prev = "smp_call_function"
+				prevIdx = i
 			}
-			return prev
+			return prev, prevIdx
 		}
-		prev = frame
+		prev, prevIdx = frame, i
 	}
-	return ""
+	return "", -1
 }
 
-func linuxHangTaskFrameExtractor(frames []string) string {
+func linuxHangTaskFrameExtractor(frames []string) (string, int) {
 	// The problem with task hung reports is that they manifest at random victim stacks,
 	// rather at the root cause stack. E.g. if there is something wrong with RCU subsystem,
 	// we are getting hangs all over the kernel on all synchronize_* calls.
@@ -959,13 +960,13 @@ func linuxHangTaskFrameExtractor(frames []string) string {
 		"synchronize_net":   synchronizeRCU,
 		"synchronize_sched": synchronizeRCU,
 	}
-	for _, frame := range frames {
+	for i, frame := range frames {
 		for anchor, replacement := range anchorFrames {
 			if strings.Contains(frame, anchor) {
 				if replacement != "" {
 					frame = replacement
 				}
-				return frame
+				return frame, i
 			}
 		}
 	}
@@ -973,15 +974,15 @@ func linuxHangTaskFrameExtractor(frames []string) string {
 		"wait", "synchronize", "context_switch", "__switch_to", "cancel_delayed_work",
 		"rcu_barrier"}
 nextFrame:
-	for _, frame := range frames {
+	for i, frame := range frames {
 		for _, ignore := range skip {
 			if strings.Contains(frame, ignore) {
 				continue nextFrame
 			}
 		}
-		return frame
+		return frame, i
 	}
-	return ""
+	return "", -1
 }
 
 var linuxStallAnchorFrames = []*regexp.Regexp{
diff --git a/pkg/report/report.go b/pkg/report/report.go
index d91bf35aa..3277b3b34 100644
--- a/pkg/report/report.go
+++ b/pkg/report/report.go
@@ -449,7 +449,7 @@ type stackFmt struct {
 	extractor frameExtractor
 }
 
-type frameExtractor func(frames []string) string
+type frameExtractor func(frames []string) (string, int)
 
 var parseStackTrace *regexp.Regexp
 
@@ -517,24 +517,38 @@ func extractDescription(output []byte, oops *oops, params *stackParams) (
 				continue
 			}
 		}
-		var args []interface{}
+		var argPrefix []any
 		for i := 2; i < len(match); i += 2 {
-			args = append(args, string(output[match[i]:match[i+1]]))
+			argPrefix = append(argPrefix, string(output[match[i]:match[i+1]]))
 		}
+		var frames []extractedFrame
 		corrupted = ""
 		if f.stack != nil {
-			frames, ok := extractStackFrame(params, f.stack, output[match[0]:])
+			var ok bool
+			frames, ok = extractStackFrame(params, f.stack, output[match[0]:])
 			if !ok {
 				corrupted = corruptedNoFrames
 			}
-			for _, frame := range frames {
-				args = append(args, frame)
-			}
 		}
+		args := canonicalArgs(argPrefix, frames)
 		desc = fmt.Sprintf(f.fmt, args...)
 		for _, alt := range f.alt {
 			altTitles = append(altTitles, fmt.Sprintf(alt, args...))
 		}
+
+		// Also consider partially stripped prefixes - these will help us
+		// better deduplicate the reports.
+		argSequences := partiallyStrippedArgs(argPrefix, frames, params)
+		for _, args := range argSequences {
+			altTitle := fmt.Sprintf(f.fmt, args...)
+			if altTitle != desc {
+				altTitles = append(altTitles, altTitle)
+			}
+			for _, alt := range f.alt {
+				altTitles = append(altTitles, fmt.Sprintf(alt, args...))
+			}
+		}
+		altTitles = uniqueStrings(altTitles)
 		format = f
 	}
 	if desc == "" {
@@ -577,21 +591,47 @@ type stackParams struct {
 	stripFramePrefixes []string
 }
 
-func extractStackFrame(params *stackParams, stack *stackFmt, output []byte) ([]string, bool) {
+func (sp *stackParams) stripFrames(frames []string) []string {
+	var ret []string
+	for _, origFrame := range frames {
+		// Pick the shortest one.
+		frame := origFrame
+		for _, prefix := range sp.stripFramePrefixes {
+			newFrame := strings.TrimPrefix(origFrame, prefix)
+			if len(newFrame) < len(frame) {
+				frame = newFrame
+			}
+		}
+		ret = append(ret, frame)
+	}
+	return ret
+}
+
+type extractedFrame struct {
+	canonical string
+	raw       string
+}
+
+func extractStackFrame(params *stackParams, stack *stackFmt, output []byte) ([]extractedFrame, bool) {
 	skip := append([]string{}, params.skipPatterns...)
 	skip = append(skip, stack.skip...)
 	var skipRe *regexp.Regexp
 	if len(skip) != 0 {
 		skipRe = regexp.MustCompile(strings.Join(skip, "|"))
 	}
-	extractor := func(frames []string) string {
-		if len(frames) == 0 {
-			return ""
+	extractor := func(rawFrames []string) extractedFrame {
+		if len(rawFrames) == 0 {
+			return extractedFrame{}
 		}
+		stripped := params.stripFrames(rawFrames)
 		if stack.extractor == nil {
-			return frames[0]
+			return extractedFrame{stripped[0], rawFrames[0]}
 		}
-		return stack.extractor(frames)
+		frame, idx := stack.extractor(stripped)
+		if frame != "" {
+			return extractedFrame{frame, rawFrames[idx]}
+		}
+		return extractedFrame{}
 	}
 	frames, ok := extractStackFrameImpl(params, output, skipRe, stack.parts, extractor)
 	if ok || len(stack.parts2) == 0 {
@@ -605,20 +645,21 @@ func lines(text []byte) [][]byte {
 }
 
 func extractStackFrameImpl(params *stackParams, output []byte, skipRe *regexp.Regexp,
-	parts []*regexp.Regexp, extractor frameExtractor) ([]string, bool) {
+	parts []*regexp.Regexp, extractor func([]string) extractedFrame) ([]extractedFrame, bool) {
 	lines := lines(output)
-	var frames, results []string
+	var rawFrames []string
+	var results []extractedFrame
 	ok := true
 	numStackTraces := 0
 nextPart:
 	for partIdx := 0; ; partIdx++ {
 		if partIdx == len(parts) || parts[partIdx] == parseStackTrace && numStackTraces > 0 {
-			keyFrame := extractor(frames)
-			if keyFrame == "" {
-				keyFrame, ok = "corrupted", false
+			keyFrame := extractor(rawFrames)
+			if keyFrame.canonical == "" {
+				keyFrame, ok = extractedFrame{"corrupted", "corrupted"}, false
 			}
 			results = append(results, keyFrame)
-			frames = nil
+			rawFrames = nil
 		}
 		if partIdx == len(parts) {
 			break
@@ -640,7 +681,7 @@ nextPart:
 				if partIdx != len(parts)-1 {
 					match := parts[partIdx+1].FindSubmatch(ln)
 					if match != nil {
-						frames = appendStackFrame(frames, match, params, skipRe)
+						rawFrames = appendStackFrame(rawFrames, match, skipRe)
 						partIdx++
 						continue nextPart
 					}
@@ -652,7 +693,7 @@ nextPart:
 						break
 					}
 				}
-				frames = appendStackFrame(frames, match, params, skipRe)
+				rawFrames = appendStackFrame(rawFrames, match, skipRe)
 			}
 		} else {
 			var ln []byte
@@ -666,7 +707,7 @@ nextPart:
 				if match == nil {
 					continue
 				}
-				frames = appendStackFrame(frames, match, params, skipRe)
+				rawFrames = appendStackFrame(rawFrames, match, skipRe)
 				break
 			}
 		}
@@ -674,22 +715,68 @@ nextPart:
 	return results, ok
 }
 
-func appendStackFrame(frames []string, match [][]byte, params *stackParams, skipRe *regexp.Regexp) []string {
+func appendStackFrame(frames []string, match [][]byte, skipRe *regexp.Regexp) []string {
 	if len(match) < 2 {
 		return frames
 	}
 	for _, frame := range match[1:] {
 		if frame != nil && (skipRe == nil || !skipRe.Match(frame)) {
-			frameName := string(frame)
-			for _, prefix := range params.stripFramePrefixes {
-				frameName = strings.TrimPrefix(frameName, prefix)
-			}
-			frames = append(frames, frameName)
+			frames = append(frames, string(frame))
 		}
 	}
 	return frames
 }
 
+func canonicalArgs(prefix []any, frames []extractedFrame) []any {
+	ret := append([]any{}, prefix...)
+	for _, frame := range frames {
+		ret = append(ret, frame.canonical)
+	}
+	return ret
+}
+
+func partiallyStrippedArgs(prefix []any, frames []extractedFrame, params *stackParams) [][]any {
+	if params == nil {
+		return nil
+	}
+	ret := [][]any{}
+	for i := 0; i <= len(params.stripFramePrefixes); i++ {
+		var list []any
+		add := true
+
+		// Also include the raw frames.
+		stripPrefix := ""
+		if i > 0 {
+			stripPrefix, add = params.stripFramePrefixes[i-1], false
+		}
+		for _, frame := range frames {
+			trimmed := strings.TrimPrefix(frame.raw, stripPrefix)
+			if trimmed != frame.raw {
+				add = true
+			}
+			list = append(list, trimmed)
+		}
+		if add {
+			list = append(append([]any{}, prefix...), list...)
+			ret = append(ret, list)
+		}
+	}
+	return ret
+}
+
+func uniqueStrings(source []string) []string {
+	dup := map[string]struct{}{}
+	var ret []string
+	for _, item := range source {
+		if _, ok := dup[item]; ok {
+			continue
+		}
+		dup[item] = struct{}{}
+		ret = append(ret, item)
+	}
+	return ret
+}
+
 func simpleLineParser(output []byte, oopses []*oops, params *stackParams, ignores []*regexp.Regexp) *Report {
 	rep := &Report{
 		Output: output,
diff --git a/pkg/report/testdata/linux/report/179 b/pkg/report/testdata/linux/report/179
index b03ece488..8f71e975f 100644
--- a/pkg/report/testdata/linux/report/179
+++ b/pkg/report/testdata/linux/report/179
@@ -1,5 +1,7 @@
 TITLE: INFO: task hung in synchronize_rcu
+ALT: INFO: task hung in synchronize_sched
 ALT: hang in synchronize_rcu
+ALT: hang in synchronize_sched
 TYPE: HANG
 
 [  369.632214] INFO: task syz-executor4:8442 blocked for more than 120 seconds.
diff --git a/pkg/report/testdata/linux/report/237 b/pkg/report/testdata/linux/report/237
index 50cfb2b96..5d9e8f7b6 100644
--- a/pkg/report/testdata/linux/report/237
+++ b/pkg/report/testdata/linux/report/237
@@ -1,4 +1,6 @@
 TITLE: INFO: rcu detected stall in mount
+ALT: INFO: rcu detected stall in ksys_mount
+ALT: stall in ksys_mount
 ALT: stall in mount
 TYPE: HANG
 
diff --git a/pkg/report/testdata/linux/report/264 b/pkg/report/testdata/linux/report/264
index 349c7c330..506d44274 100644
--- a/pkg/report/testdata/linux/report/264
+++ b/pkg/report/testdata/linux/report/264
@@ -1,4 +1,6 @@
 TITLE: BUG: soft lockup in sys_rmdir
+ALT: BUG: soft lockup in __x64_sys_rmdir
+ALT: stall in __x64_sys_rmdir
 ALT: stall in sys_rmdir
 TYPE: HANG
 
diff --git a/pkg/report/testdata/linux/report/266 b/pkg/report/testdata/linux/report/266
index 7b0c0aa22..0018ceec9 100644
--- a/pkg/report/testdata/linux/report/266
+++ b/pkg/report/testdata/linux/report/266
@@ -1,4 +1,6 @@
 TITLE: BUG: soft lockup in sys_rmdir
+ALT: BUG: soft lockup in __x64_sys_rmdir
+ALT: stall in __x64_sys_rmdir
 ALT: stall in sys_rmdir
 TYPE: HANG
 
diff --git a/pkg/report/testdata/linux/report/275 b/pkg/report/testdata/linux/report/275
index 433dde00c..dfe1c6be5 100644
--- a/pkg/report/testdata/linux/report/275
+++ b/pkg/report/testdata/linux/report/275
@@ -1,5 +1,7 @@
 TITLE: INFO: rcu detected stall in smp_call_function
+ALT: INFO: rcu detected stall in smp_call_function_single
 ALT: stall in smp_call_function
+ALT: stall in smp_call_function_single
 TYPE: HANG
 
 [  401.753130] rcu: INFO: rcu_sched detected stalls on CPUs/tasks:
diff --git a/pkg/report/testdata/linux/report/278 b/pkg/report/testdata/linux/report/278
index 57f39cc0d..5c9268c05 100644
--- a/pkg/report/testdata/linux/report/278
+++ b/pkg/report/testdata/linux/report/278
@@ -1,4 +1,6 @@
 TITLE: INFO: rcu detected stall in sys_futex
+ALT: INFO: rcu detected stall in __x64_sys_futex
+ALT: stall in __x64_sys_futex
 ALT: stall in sys_futex
 TYPE: HANG
 
diff --git a/pkg/report/testdata/linux/report/288 b/pkg/report/testdata/linux/report/288
index 8e5a78051..24ad049cd 100644
--- a/pkg/report/testdata/linux/report/288
+++ b/pkg/report/testdata/linux/report/288
@@ -1,5 +1,7 @@
 TITLE: BUG: soft lockup in smp_call_function
+ALT: BUG: soft lockup in smp_call_function_single
 ALT: stall in smp_call_function
+ALT: stall in smp_call_function_single
 TYPE: HANG
 
 [ 1342.342232] watchdog: BUG: soft lockup - CPU#0 stuck for 123s! [syz-executor0:8009]
diff --git a/pkg/report/testdata/linux/report/291 b/pkg/report/testdata/linux/report/291
index 588fb848c..b82bdc71d 100644
--- a/pkg/report/testdata/linux/report/291
+++ b/pkg/report/testdata/linux/report/291
@@ -1,4 +1,6 @@
 TITLE: INFO: rcu detected stall in rmdir
+ALT: INFO: rcu detected stall in SyS_rmdir
+ALT: stall in SyS_rmdir
 ALT: stall in rmdir
 TYPE: HANG
 
diff --git a/pkg/report/testdata/linux/report/292 b/pkg/report/testdata/linux/report/292
index 0f78325d5..acc142e03 100644
--- a/pkg/report/testdata/linux/report/292
+++ b/pkg/report/testdata/linux/report/292
@@ -1,5 +1,7 @@
 TITLE: INFO: rcu detected stall in smp_call_function
+ALT: INFO: rcu detected stall in smp_call_function_single
 ALT: stall in smp_call_function
+ALT: stall in smp_call_function_single
 TYPE: HANG
 
 [  420.341960] INFO: rcu_preempt detected stalls on CPUs/tasks:
diff --git a/pkg/report/testdata/linux/report/296 b/pkg/report/testdata/linux/report/296
index 77d85584a..33ae31f09 100644
--- a/pkg/report/testdata/linux/report/296
+++ b/pkg/report/testdata/linux/report/296
@@ -1,4 +1,6 @@
 TITLE: BUG: soft lockup in mount
+ALT: BUG: soft lockup in compat_SyS_mount
+ALT: stall in compat_SyS_mount
 ALT: stall in mount
 TYPE: HANG
 
diff --git a/pkg/report/testdata/linux/report/297 b/pkg/report/testdata/linux/report/297
index 0e6471dd2..22ce896a0 100644
--- a/pkg/report/testdata/linux/report/297
+++ b/pkg/report/testdata/linux/report/297
@@ -1,5 +1,7 @@
 TITLE: BUG: soft lockup in smp_call_function
+ALT: BUG: soft lockup in smp_call_function_single
 ALT: stall in smp_call_function
+ALT: stall in smp_call_function_single
 TYPE: HANG
 
 [  601.962573] watchdog: BUG: soft lockup - CPU#1 stuck for 123s! [syz-executor1:24793]
diff --git a/pkg/report/testdata/linux/report/300 b/pkg/report/testdata/linux/report/300
index 73b10050c..7c06c668b 100644
--- a/pkg/report/testdata/linux/report/300
+++ b/pkg/report/testdata/linux/report/300
@@ -1,5 +1,7 @@
 TITLE: INFO: rcu detected stall in smp_call_function
+ALT: INFO: rcu detected stall in smp_call_function_single
 ALT: stall in smp_call_function
+ALT: stall in smp_call_function_single
 TYPE: HANG
 
 [ 3481.239960] INFO: rcu_sched detected stalls on CPUs/tasks:
diff --git a/pkg/report/testdata/linux/report/316 b/pkg/report/testdata/linux/report/316
index 3f9f9e131..f6e11a0e1 100644
--- a/pkg/report/testdata/linux/report/316
+++ b/pkg/report/testdata/linux/report/316
@@ -1,4 +1,6 @@
 TITLE: kernel panic: corrupted stack end in sys_socket
+ALT: kernel panic: corrupted stack end in __arm64_sys_socket
+ALT: stack-overflow in __arm64_sys_socket
 ALT: stack-overflow in sys_socket
 
 [ 2231.649459] Kernel panic - not syncing: corrupted stack end detected inside scheduler
diff --git a/pkg/report/testdata/linux/report/350 b/pkg/report/testdata/linux/report/350
index 19cab373f..85a813250 100644
--- a/pkg/report/testdata/linux/report/350
+++ b/pkg/report/testdata/linux/report/350
@@ -1,5 +1,7 @@
 TITLE: BUG: soft lockup in smp_call_function
+ALT: BUG: soft lockup in smp_call_function_many
 ALT: stall in smp_call_function
+ALT: stall in smp_call_function_many
 TYPE: HANG
 
 [ 1098.601132][    C2] watchdog: BUG: soft lockup - CPU#2 stuck for 136s! [syz-executor4:4888]
diff --git a/pkg/report/testdata/linux/report/378 b/pkg/report/testdata/linux/report/378
index 1b0edbaa2..ec40c051a 100644
--- a/pkg/report/testdata/linux/report/378
+++ b/pkg/report/testdata/linux/report/378
@@ -1,4 +1,6 @@
 TITLE: INFO: rcu detected stall in sys_inotify_init
+ALT: INFO: rcu detected stall in __ia32_sys_inotify_init
+ALT: stall in __ia32_sys_inotify_init
 ALT: stall in sys_inotify_init
 TYPE: HANG
 
diff --git a/pkg/report/testdata/linux/report/421 b/pkg/report/testdata/linux/report/421
index e6bf45a3d..d7d540a4b 100644
--- a/pkg/report/testdata/linux/report/421
+++ b/pkg/report/testdata/linux/report/421
@@ -1,4 +1,6 @@
 TITLE: INFO: rcu detected stall in sys_exit_group
+ALT: INFO: rcu detected stall in __x64_sys_exit_group
+ALT: stall in __x64_sys_exit_group
 ALT: stall in sys_exit_group
 TYPE: HANG
 
diff --git a/pkg/report/testdata/linux/report/432 b/pkg/report/testdata/linux/report/432
index 92a356636..7d6e8a585 100644
--- a/pkg/report/testdata/linux/report/432
+++ b/pkg/report/testdata/linux/report/432
@@ -1,5 +1,7 @@
 TITLE: INFO: task hung in synchronize_rcu
+ALT: INFO: task hung in synchronize_rcu_expedited
 ALT: hang in synchronize_rcu
+ALT: hang in synchronize_rcu_expedited
 TYPE: HANG
 
 [ 1686.611836][ T1064] INFO: task kworker/u4:5:9381 blocked for more than 143 seconds.
diff --git a/pkg/report/testdata/linux/report/433 b/pkg/report/testdata/linux/report/433
index 87b77b49b..0aaa93bf8 100644
--- a/pkg/report/testdata/linux/report/433
+++ b/pkg/report/testdata/linux/report/433
@@ -1,5 +1,7 @@
 TITLE: INFO: task hung in synchronize_rcu
+ALT: INFO: task hung in synchronize_rcu_expedited
 ALT: hang in synchronize_rcu
+ALT: hang in synchronize_rcu_expedited
 TYPE: HANG
 
 [  741.089420][ T1057] INFO: task syz-executor.2:28539 blocked for more than 143 seconds.
diff --git a/pkg/report/testdata/linux/report/434 b/pkg/report/testdata/linux/report/434
index aefcc52cd..38913b724 100644
--- a/pkg/report/testdata/linux/report/434
+++ b/pkg/report/testdata/linux/report/434
@@ -1,5 +1,7 @@
 TITLE: INFO: task hung in synchronize_rcu
+ALT: INFO: task hung in synchronize_rcu_expedited
 ALT: hang in synchronize_rcu
+ALT: hang in synchronize_rcu_expedited
 TYPE: HANG
 
 [  405.210796][ T1057] INFO: task syz-executor.3:18078 blocked for more than 143 seconds.
diff --git a/pkg/report/testdata/linux/report/435 b/pkg/report/testdata/linux/report/435
index 8274280c9..d30faf84d 100644
--- a/pkg/report/testdata/linux/report/435
+++ b/pkg/report/testdata/linux/report/435
@@ -1,4 +1,6 @@
 TITLE: INFO: task hung in synchronize_rcu
+ALT: INFO: task hung in __synchronize_srcu
+ALT: hang in __synchronize_srcu
 ALT: hang in synchronize_rcu
 TYPE: HANG
 
diff --git a/pkg/report/testdata/linux/report/437 b/pkg/report/testdata/linux/report/437
index 96b6796ba..494224268 100644
--- a/pkg/report/testdata/linux/report/437
+++ b/pkg/report/testdata/linux/report/437
@@ -1,5 +1,7 @@
 TITLE: INFO: task hung in synchronize_rcu
+ALT: INFO: task hung in synchronize_rcu_expedited
 ALT: hang in synchronize_rcu
+ALT: hang in synchronize_rcu_expedited
 TYPE: HANG
 
 [ 1395.402634][ T1057] INFO: task kworker/u4:8:11933 blocked for more than 143 seconds.
diff --git a/pkg/report/testdata/linux/report/438 b/pkg/report/testdata/linux/report/438
index 9804eb4b9..9ec38a3ae 100644
--- a/pkg/report/testdata/linux/report/438
+++ b/pkg/report/testdata/linux/report/438
@@ -1,5 +1,7 @@
 TITLE: INFO: task hung in synchronize_rcu
+ALT: INFO: task hung in synchronize_rcu_expedited
 ALT: hang in synchronize_rcu
+ALT: hang in synchronize_rcu_expedited
 TYPE: HANG
 
 [  327.308891][ T1057] INFO: task kworker/u4:6:10032 blocked for more than 143 seconds.
diff --git a/pkg/report/testdata/linux/report/439 b/pkg/report/testdata/linux/report/439
index 05166f32f..d64f38030 100644
--- a/pkg/report/testdata/linux/report/439
+++ b/pkg/report/testdata/linux/report/439
@@ -1,5 +1,7 @@
 TITLE: INFO: task hung in synchronize_rcu
+ALT: INFO: task hung in synchronize_rcu_expedited
 ALT: hang in synchronize_rcu
+ALT: hang in synchronize_rcu_expedited
 TYPE: HANG
 
 [  348.321211][ T1056] INFO: task syz-executor.2:9976 blocked for more than 143 seconds.
diff --git a/pkg/report/testdata/linux/report/442 b/pkg/report/testdata/linux/report/442
index 1c0a9ac72..f04d55ca1 100644
--- a/pkg/report/testdata/linux/report/442
+++ b/pkg/report/testdata/linux/report/442
@@ -1,5 +1,7 @@
 TITLE: INFO: task hung in synchronize_rcu
+ALT: INFO: task hung in synchronize_sched
 ALT: hang in synchronize_rcu
+ALT: hang in synchronize_sched
 TYPE: HANG
 
 [  716.122185] INFO: task syz-executor.0:16519 blocked for more than 140 seconds.
diff --git a/pkg/report/testdata/linux/report/445 b/pkg/report/testdata/linux/report/445
index ddfdf6cdc..f14756da6 100644
--- a/pkg/report/testdata/linux/report/445
+++ b/pkg/report/testdata/linux/report/445
@@ -1,5 +1,7 @@
 TITLE: INFO: task hung in synchronize_rcu
+ALT: INFO: task hung in synchronize_rcu_expedited
 ALT: hang in synchronize_rcu
+ALT: hang in synchronize_rcu_expedited
 TYPE: HANG
 
 [  341.326285][ T1070] INFO: task kworker/u4:0:7 blocked for more than 143 seconds.
diff --git a/pkg/report/testdata/linux/report/502 b/pkg/report/testdata/linux/report/502
index 79eaf7cf3..4523fd17f 100644
--- a/pkg/report/testdata/linux/report/502
+++ b/pkg/report/testdata/linux/report/502
@@ -1,5 +1,7 @@
 TITLE: INFO: rcu detected stall in smp_call_function
+ALT: INFO: rcu detected stall in smp_call_function_single
 ALT: stall in smp_call_function
+ALT: stall in smp_call_function_single
 TYPE: HANG
 
 [  611.778481][    C1] rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
diff --git a/pkg/report/testdata/linux/report/503 b/pkg/report/testdata/linux/report/503
index 89744f3e6..24a874c17 100644
--- a/pkg/report/testdata/linux/report/503
+++ b/pkg/report/testdata/linux/report/503
@@ -1,5 +1,7 @@
 TITLE: BUG: soft lockup in smp_call_function
+ALT: BUG: soft lockup in smp_call_function_single
 ALT: stall in smp_call_function
+ALT: stall in smp_call_function_single
 TYPE: HANG
 
 [ 1117.938056][    C0] watchdog: BUG: soft lockup - CPU#0 stuck for 123s! [syz-executor.1:2970]
diff --git a/pkg/report/testdata/linux/report/504 b/pkg/report/testdata/linux/report/504
index 8dc6a541f..dc8fc4c41 100644
--- a/pkg/report/testdata/linux/report/504
+++ b/pkg/report/testdata/linux/report/504
@@ -1,5 +1,7 @@
 TITLE: BUG: soft lockup in smp_call_function
+ALT: BUG: soft lockup in smp_call_function_single
 ALT: stall in smp_call_function
+ALT: stall in smp_call_function_single
 TYPE: HANG
 
 [  635.060078][    C0] watchdog: BUG: soft lockup - CPU#0 stuck for 123s! [syz-executor.2:12834]
diff --git a/pkg/report/testdata/linux/report/505 b/pkg/report/testdata/linux/report/505
index af0f7fc92..42ef0ff31 100644
--- a/pkg/report/testdata/linux/report/505
+++ b/pkg/report/testdata/linux/report/505
@@ -1,5 +1,7 @@
 TITLE: BUG: soft lockup in smp_call_function
+ALT: BUG: soft lockup in smp_call_function_single
 ALT: stall in smp_call_function
+ALT: stall in smp_call_function_single
 TYPE: HANG
 
 [ 1472.340932][    C1] watchdog: BUG: soft lockup - CPU#1 stuck for 123s! [syz-executor.0:8399]
diff --git a/pkg/report/testdata/linux/report/506 b/pkg/report/testdata/linux/report/506
index fe00040d0..81b2c21c9 100644
--- a/pkg/report/testdata/linux/report/506
+++ b/pkg/report/testdata/linux/report/506
@@ -1,5 +1,7 @@
 TITLE: BUG: soft lockup in smp_call_function
+ALT: BUG: soft lockup in smp_call_function_single
 ALT: stall in smp_call_function
+ALT: stall in smp_call_function_single
 TYPE: HANG
 
 [ 1270.359469][    C0] watchdog: BUG: soft lockup - CPU#0 stuck for 123s! [kworker/0:13:3571]
diff --git a/pkg/report/testdata/linux/report/507 b/pkg/report/testdata/linux/report/507
index d8850e22d..dc1f03393 100644
--- a/pkg/report/testdata/linux/report/507
+++ b/pkg/report/testdata/linux/report/507
@@ -1,4 +1,6 @@
 TITLE: INFO: task hung in synchronize_rcu
+ALT: INFO: task hung in __synchronize_srcu
+ALT: hang in __synchronize_srcu
 ALT: hang in synchronize_rcu
 TYPE: HANG
 
diff --git a/pkg/report/testdata/linux/report/529 b/pkg/report/testdata/linux/report/529
index d4b11bc8e..e5dd71133 100644
--- a/pkg/report/testdata/linux/report/529
+++ b/pkg/report/testdata/linux/report/529
@@ -1,4 +1,5 @@
 TITLE: WARNING: suspicious RCU usage in sys_rt_sigreturn
+ALT: WARNING: suspicious RCU usage in __arm64_sys_rt_sigreturn
 TYPE: LOCKDEP
 
 [  581.924125][ T4410] =============================
diff --git a/pkg/report/testdata/linux/report/549 b/pkg/report/testdata/linux/report/549
index 40c91b21a..cd58f922f 100644
--- a/pkg/report/testdata/linux/report/549
+++ b/pkg/report/testdata/linux/report/549
@@ -1,5 +1,7 @@
 TITLE: INFO: rcu detected stall in openat2
+ALT: INFO: rcu detected stall in sys_openat2
 ALT: stall in openat2
+ALT: stall in sys_openat2
 TYPE: HANG
 
 rcu: INFO: rcu_sched self-detected stall on CPU
diff --git a/pkg/report/testdata/linux/report/610 b/pkg/report/testdata/linux/report/610
index 575db2508..e9415bc84 100644
--- a/pkg/report/testdata/linux/report/610
+++ b/pkg/report/testdata/linux/report/610
@@ -1,4 +1,6 @@
 TITLE: INFO: rcu detected stall in sys_recvmmsg
+ALT: INFO: rcu detected stall in __x64_sys_recvmmsg
+ALT: stall in __x64_sys_recvmmsg
 ALT: stall in sys_recvmmsg
 TYPE: HANG
 
diff --git a/pkg/report/testdata/linux/report/611 b/pkg/report/testdata/linux/report/611
index 63d87ed48..cbf9aa46c 100644
--- a/pkg/report/testdata/linux/report/611
+++ b/pkg/report/testdata/linux/report/611
@@ -1,4 +1,6 @@
 TITLE: INFO: rcu detected stall in sys_sendmmsg
+ALT: INFO: rcu detected stall in __x64_sys_sendmmsg
+ALT: stall in __x64_sys_sendmmsg
 ALT: stall in sys_sendmmsg
 TYPE: HANG
 
diff --git a/pkg/report/testdata/linux/report/622 b/pkg/report/testdata/linux/report/622
index f50eb40cb..9c8af83ba 100644
--- a/pkg/report/testdata/linux/report/622
+++ b/pkg/report/testdata/linux/report/622
@@ -1,4 +1,5 @@
 TITLE: WARNING: refcount bug in sys_memfd_secret
+ALT: WARNING: refcount bug in __se_sys_memfd_secret
 TYPE: WARNING
 
 [   54.834944][ T6519] ------------[ cut here ]------------
diff --git a/pkg/report/testdata/linux/report/623 b/pkg/report/testdata/linux/report/623
index f532d5509..6871fa11f 100644
--- a/pkg/report/testdata/linux/report/623
+++ b/pkg/report/testdata/linux/report/623
@@ -1,4 +1,5 @@
 TITLE: WARNING: refcount bug in sys_memfd_secret
+ALT: WARNING: refcount bug in __x64_sys_memfd_secret
 TYPE: WARNING
 
 [   90.146573][ T6540] ------------[ cut here ]------------
diff --git a/pkg/report/testdata/linux/report/65 b/pkg/report/testdata/linux/report/65
index b524f8217..0e99347de 100644
--- a/pkg/report/testdata/linux/report/65
+++ b/pkg/report/testdata/linux/report/65
@@ -1,5 +1,7 @@
 TITLE: BUG: soft lockup in smp_call_function
+ALT: BUG: soft lockup in smp_call_function_single
 ALT: stall in smp_call_function
+ALT: stall in smp_call_function_single
 TYPE: HANG
 
 [  247.938942] watchdog: BUG: soft lockup - CPU#0 stuck for 134s! [kworker/0:2:1400]
diff --git a/pkg/report/testdata/linux/report/688 b/pkg/report/testdata/linux/report/688
index 2feb97add..d29eee23b 100644
--- a/pkg/report/testdata/linux/report/688
+++ b/pkg/report/testdata/linux/report/688
@@ -1,4 +1,6 @@
 TITLE: INFO: rcu detected stall in sys_recvmmsg
+ALT: INFO: rcu detected stall in __arm64_sys_recvmmsg
+ALT: stall in __arm64_sys_recvmmsg
 ALT: stall in sys_recvmmsg
 TYPE: HANG
 
diff --git a/pkg/report/testdata/linux/report/75 b/pkg/report/testdata/linux/report/75
index 56fc46efb..bb614aba3 100644
--- a/pkg/report/testdata/linux/report/75
+++ b/pkg/report/testdata/linux/report/75
@@ -1,4 +1,5 @@
 TITLE: BUG: scheduling while atomic in pause
+ALT: BUG: scheduling while atomic in SyS_pause
 TYPE: ATOMIC_SLEEP
 
 [  185.479466] BUG: scheduling while atomic: syz-executor0/19425/0x00000000