pkg/report: use KMSAN origin to dedup reports

Support extracting multiple frames from a single report
(one per parseStackTrace marker). Extract KMSAN origin
frame and use it as an additional ALT title for deduplication.

Fixes #2927

8 files changed, 11 insertions, 3 deletions

diff --git a/pkg/report/testdata/linux/report/200 b/pkg/report/testdata/linux/report/200
index 305e81834..d266e0de4 100644
--- a/pkg/report/testdata/linux/report/200
+++ b/pkg/report/testdata/linux/report/200
@@ -1,5 +1,5 @@
-TITLE: general protection fault in corrupted
-ALT: bad-access in corrupted
+TITLE: general protection fault in __alloc_skb
+ALT: bad-access in __alloc_skb
 CORRUPTED: Y
 
 [   73.452724] FAULT_INJECTION: forcing a failure.
diff --git a/pkg/report/testdata/linux/report/626 b/pkg/report/testdata/linux/report/626
index 24a1d19af..65b50d49d 100644
--- a/pkg/report/testdata/linux/report/626
+++ b/pkg/report/testdata/linux/report/626
@@ -1,6 +1,6 @@
 TITLE: KMSAN: uninit-value in prepare_task_switch
 ALT: bad-access in prepare_task_switch
-CORRUPTED: N
+ALT: KMSAN origin in step_into
 
 [  567.476354][    T1] =====================================================
 [  567.483452][    T1] BUG: KMSAN: uninit-value in prepare_task_switch+0x284/0xd00
diff --git a/pkg/report/testdata/linux/report/632 b/pkg/report/testdata/linux/report/632
index cef377adc..eaee9a914 100644
--- a/pkg/report/testdata/linux/report/632
+++ b/pkg/report/testdata/linux/report/632
@@ -1,5 +1,7 @@
 TITLE: KMSAN: uninit-value in __perf_event_task_sched_in
 ALT: bad-access in __perf_event_task_sched_in
+ALT: KMSAN origin in corrupted
+CORRUPTED: Y
 
 [ 1307.507727][    T0] =====================================================
 [ 1307.507800][    T5] kmsan_internal_set_shadow_origin: not memsetting 24 bytes starting at ffff8881024001a0, because the shadow is NULL
diff --git a/pkg/report/testdata/linux/report/633 b/pkg/report/testdata/linux/report/633
index 18e4ef315..c233f4ebf 100644
--- a/pkg/report/testdata/linux/report/633
+++ b/pkg/report/testdata/linux/report/633
@@ -1,5 +1,7 @@
 TITLE: KMSAN: uninit-value in prepend_path
 ALT: bad-access in prepend_path
+ALT: KMSAN origin in corrupted
+CORRUPTED: Y
 
 [  370.741346][ T8537] =====================================================
 [  370.748447][ T8537] BUG: KMSAN: uninit-value in prepend_path+0x4ff/0x12b0
diff --git a/pkg/report/testdata/linux/report/634 b/pkg/report/testdata/linux/report/634
index bab9f83b9..407a7c1b2 100644
--- a/pkg/report/testdata/linux/report/634
+++ b/pkg/report/testdata/linux/report/634
@@ -1,5 +1,6 @@
 TITLE: KMSAN: kernel-infoleak in urandom_read_nowarn
 ALT: bad-access in urandom_read_nowarn
+ALT: KMSAN origin in crng_reseed
 
 [  600.161674][ T9046] =====================================================
 [  600.168788][ T9046] BUG: KMSAN: kernel-infoleak in _copy_to_user+0x1c9/0x270
diff --git a/pkg/report/testdata/linux/report/635 b/pkg/report/testdata/linux/report/635
index d97678487..3e855e468 100644
--- a/pkg/report/testdata/linux/report/635
+++ b/pkg/report/testdata/linux/report/635
@@ -1,5 +1,6 @@
 TITLE: KMSAN: uninit-value in sctp_epaddr_lookup_transport
 ALT: bad-access in sctp_epaddr_lookup_transport
+ALT: KMSAN origin in sctp_rcv
 
 [  701.063465][    C1] =====================================================
 [  701.070594][    C1] BUG: KMSAN: uninit-value in sctp_epaddr_lookup_transport+0x9bc/0xd10
diff --git a/pkg/report/testdata/linux/report/636 b/pkg/report/testdata/linux/report/636
index 7e9eef087..bfb9dce4d 100644
--- a/pkg/report/testdata/linux/report/636
+++ b/pkg/report/testdata/linux/report/636
@@ -1,5 +1,6 @@
 TITLE: KMSAN: uninit-value in ppp_send_frame
 ALT: bad-access in ppp_send_frame
+ALT: KMSAN origin in ppp_write
 
 [   87.733076][ T3479] =====================================================
 [   87.740069][ T3479] BUG: KMSAN: uninit-value in ppp_send_frame+0x28d/0x27c0
diff --git a/pkg/report/testdata/linux/report/637 b/pkg/report/testdata/linux/report/637
index 66eb2a48c..92754816e 100644
--- a/pkg/report/testdata/linux/report/637
+++ b/pkg/report/testdata/linux/report/637
@@ -1,4 +1,5 @@
 TITLE: KMSAN: kernel-usb-infoleak in hif_usb_send
+ALT: KMSAN origin in htc_connect_service
 
 [  180.463142][ T3569] =====================================================
 [  180.470227][ T3569] BUG: KMSAN: kernel-usb-infoleak in usb_submit_urb+0x6c1/0x2aa0