pkg/report: add another akaros backtrace message

pkg/report/akaros.go

@@ -135,11 +135,12 @@ func (ctx *akaros) minimizeReport(report []byte) []byte {
 
 var (
 	akarosSymbolizeRe = compile(`^#[0-9]+ \[\<(0x[0-9a-f]+)\>\] in ([a-zA-Z0-9_]+)`)
+	akarosBacktraceRe = compile(`(?:Stack Backtrace|Backtrace of kernel context) on Core [0-9]+:`)
 )
 
 var akarosStackParams = &stackParams{
 	stackStartRes: []*regexp.Regexp{
-		regexp.MustCompile(`Stack Backtrace on Core [0-9]+:`),
+		akarosBacktraceRe,
 	},
 	frameRes: []*regexp.Regexp{
 		compile(`^#[0-9]+ {{PC}} in ([a-zA-Z0-9_]+)`),
@@ -161,7 +162,7 @@ var akarosOopses = []*oops{
 				fmt:   "assertion failed: %[2]v",
 				stack: &stackFmt{
 					parts: []*regexp.Regexp{
-						compile(`Stack Backtrace on Core [0-9]+:`),
+						akarosBacktraceRe,
 						parseStackTrace,
 					},
 				},
@@ -171,7 +172,7 @@ var akarosOopses = []*oops{
 				fmt:   "kernel panic: %[2]v",
 				stack: &stackFmt{
 					parts: []*regexp.Regexp{
-						compile(`Stack Backtrace on Core [0-9]+:`),
+						akarosBacktraceRe,
 						parseStackTrace,
 					},
 				},

pkg/report/testdata/akaros/report/7

@@ -0,0 +1,69 @@
+TITLE: kernel panic: Proc-ful Page Fault in the Kernel at ADDR!
+
+bash-4.3$ kernel panic at kern/arch/x86/trap.c:309, from core 3: Proc-ful Page Fault in the Kernel at 0x000000000000001b!
+
+HW TRAP frame at 0xfffffff0000a9d30 on core 3
+
+  rax  0x0000000000000000
+
+  rbx  0xffff80000490b120
+
+  rcx  0xfffffff0000a9ea0
+
+  rdx  0xfffffff0000a9d6c
+
+  rbp  0xfffffff0000a9e38
+
+  rsi  0x0000000000000000
+
+  rdi  0xfffffff0000a9ea0
+
+  r8   0x0000000000000001
+
+  r9   0xffffffffc8790880
+
+  r10  0x0000000000000030
+
+  r11  0xffff800015a64ca0
+
+  r12  0xffff800014e95b80
+
+  r13  0x00000000200000c0
+
+  r14  0x0000000000000073
+
+  r15  0x0000000000000007
+
+  trap 0x0000000e Page Fault
+
+  gsbs 0xffffffffc8668140
+
+  fsbs 0x0000000000000000
+
+  err  0x--------00000000
+
+  rip  0xffffffffc20583b4
+
+  cs   0x------------0008
+
+  flag 0x0000000000010246
+
+  rsp  0xfffffff0000a9df8
+
+  ss   0x------------0010
+
+
+Backtrace of kernel context on Core 3:
+
+#01 [<0xffffffffc20583b4>] in sys_readlink
+
+#02 [<0xffffffffc20593c9>] in syscall
+
+#03 [<0xffffffffc2059584>] in run_local_syscall
+
+#04 [<0xffffffffc2059ab9>] in prep_syscalls
+
+#05 [<0xffffffffc20ab29a>] in sysenter_callwrapper
+
+
+Entering Nanwan's Dungeon on Core 3 (Ints off):