pkg/report: add simpler reporter for akaros

pkg/report/akaros.go

@@ -0,0 +1,87 @@
+// Copyright 2018 syzkaller project authors. All rights reserved.
+// Use of this source code is governed by Apache 2 LICENSE that can be found in the LICENSE file.
+
+package report
+
+import (
+	"bytes"
+	"regexp"
+)
+
+type akaros struct {
+	ignores []*regexp.Regexp
+}
+
+func ctorAkaros(kernelSrc, kernelObj string, ignores []*regexp.Regexp) (Reporter, []string, error) {
+	ctx := &akaros{
+		ignores: ignores,
+	}
+	return ctx, nil, nil
+}
+
+func (ctx *akaros) ContainsCrash(output []byte) bool {
+	return containsCrash(output, akarosOopses, ctx.ignores)
+}
+
+func (ctx *akaros) Parse(output []byte) *Report {
+	rep := &Report{
+		Output: output,
+	}
+	var oops *oops
+	for pos := 0; pos < len(output); {
+		next := bytes.IndexByte(output[pos:], '\n')
+		if next != -1 {
+			next += pos
+		} else {
+			next = len(output)
+		}
+		line := output[pos:next]
+		for _, oops1 := range akarosOopses {
+			match := matchOops(line, oops1, ctx.ignores)
+			if match != -1 {
+				oops = oops1
+				rep.StartPos = pos
+				break
+			}
+		}
+		if oops != nil {
+			break
+		}
+		pos = next + 1
+	}
+	if oops == nil {
+		return nil
+	}
+	title, corrupted, _ := extractDescription(output[rep.StartPos:], oops, nil)
+	rep.Title = title
+	rep.Report = output[rep.StartPos:]
+	rep.Corrupted = corrupted != ""
+	rep.corruptedReason = corrupted
+	return rep
+}
+
+func (ctx *akaros) Symbolize(rep *Report) error {
+	return nil
+}
+
+// kernel panic at kern/src/vfs.c:1359, from core 1: assertion failed: buf == buf_end
+// kernel panic at kern/src/ns/sysfile.c:719, from core 1: assertion failed: n >= sizeof(struct kdirent)
+/// $ kernel panic at kern/src/slab.c:518, from core 1: [German Accent]: OOM for a small slab growth!!!
+var akarosOopses = []*oops{
+	&oops{
+		[]byte("kernel panic"),
+		[]oopsFormat{
+			{
+				title:        compile("kernel panic .* assertion failed: (.*)"),
+				fmt:          "assertion failed: %[1]v",
+				noStackTrace: true,
+			},
+			{
+				title:        compile("kernel panic .* from core [0-9]+: (.*)"),
+				fmt:          "kernel panic: %[1]v",
+				noStackTrace: true,
+			},
+		},
+		[]*regexp.Regexp{},
+	},
+}

pkg/report/report.go

@@ -73,7 +73,7 @@ func NewReporter(cfg *mgrconfig.Config) (Reporter, error) {
 }
 
 var ctors = map[string]fn{
-	"akaros":  ctorStub,
+	"akaros":  ctorAkaros,
 	"linux":   ctorLinux,
 	"gvisor":  ctorGvisor,
 	"freebsd": ctorFreebsd,

pkg/report/testdata/akaros/report/0

@@ -0,0 +1,13 @@
+TITLE: kernel panic: [German Accent]: OOM for a small slab growth!!!
+
+/ $ kernel panic at kern/src/slab.c:518, from core 1: [German Accent]: OOM for a small slab growth!!!
+
+Entering Nanwan's Dungeon on Core 1 (Ints on):
+
+Type 'help' for a list of commands.
+
+ROS(Core 1)> kernel panic at kern/src/arena.c:686, from core 0: OOM!
+
+Entering Nanwan's Dungeon on Core 0 (Ints on):
+
+Type 'help' for a list of commands.

pkg/report/testdata/akaros/report/1

@@ -0,0 +1,38 @@
+TITLE: kernel panic: Proc-ful Page Fault in the Kernel at ADDR!
+
+HW TRAP frame at 0xfffffff00006ab90 on core 0
+  rax  0xffff8000044a0b60
+  rbx  0x000000000000000b
+  rcx  0xffff8000044a0b60
+  rdx  0x000000000000000b
+  rbp  0xfffffff00006ac58
+  rsi  0x0000000000483cda
+  rdi  0xffff8000044a0b60
+  r8   0x0000000000483cdc
+  r9   0x000000000000000a
+  r10  0xffff8000044a0b6a
+  r11  0xffff8000044a0b5a
+  r12  0xffff8000048b3020
+  r13  0x0000000000483cda
+  r14  0x0000000000010000
+  r15  0xffff8000044a0b60
+  trap 0x0000000e Page Fault
+  gsbs 0xffffffffc82e58c0
+  fsbs 0x0000000000000000
+  err  0x--------00000000
+  rip  0xffffffffc2053804
+  cs   0x------------0008
+  flag 0x0000000000010202
+  rsp  0xfffffff00006ac58
+  ss   0x------------0010
+
+Backtrace of kernel context on Core 0:
+#01 [<0xffffffffc2053804>] in memcpy
+#02 [<0xffffffffc203a495>] in __qwrite
+#03 [<0xffffffffc207ef26>] in pipewrite
+#04 [<0xffffffffc203f3c4>] in rwrite
+#05 [<0xffffffffc2057ca9>] in syscall
+#06 [<0xffffffffc2057e64>] in run_local_syscall
+#07 [<0xffffffffc20a957a>] in sysenter_callwrapper
+kernel panic at kern/arch/x86/trap.c:311, from core 0: Proc-ful Page Fault in the Kernel at 0x0000000000483cda!
+Entering Nanwan's Dungeon on Core 0 (Ints off):

pkg/report/testdata/akaros/report/2

@@ -0,0 +1,15 @@
+TITLE: assertion failed: buf == buf_end
+
+kernel panic at kern/src/vfs.c:1359, from core 1: assertion failed: buf == buf_end
+Entering Nanwan's Dungeon on Core 1 (Ints on):
+Type 'help' for a list of commands.
+ROS(Core 1)> bash-4.3$ bt
+Stack Backtrace on Core 1:
+#01 [<0xffffffffc2016074>] in mon_backtrace
+#02 [<0xffffffffc2017177>] in monitor
+#03 [<0xffffffffc200cbfc>] in _panic
+#04 [<0xffffffffc205c51c>] in generic_file_write
+#05 [<0xffffffffc2053890>] in sys_write
+#06 [<0xffffffffc2056919>] in syscall
+#07 [<0xffffffffc2056ad4>] in run_local_syscall
+#08 [<0xffffffffc20a28aa>] in sysenter_callwrapper

pkg/report/testdata/akaros/report/3

@@ -0,0 +1,144 @@
+TITLE: assertion failed: page && pm_slot_check_refcnt(*page->pg_tree_slot)
+
+Unhandled user trap in vcore context from VC 1
+HW TRAP frame (partial) at 0xffffffffc82cbd20 on core 1
+  rax  0x0000100000011743
+  rbx  0x000030000005ced0
+  rcx  0x0000000000000001
+  rdx  0x0000100000011740
+  rbp  0x000030000005ceb0
+  rsi  0x0000100000008820
+  rdi  0x0000100000008820
+  r8   0x0000000000000000
+  r9   0x0000000000000000
+  r10  0x000030000005ced0
+  r11  0x0000000000000200
+  r12  0x0000000000000001
+  r13  0x0000000000000001
+  r14  0x0000000000409720
+  r15  0x0000000000000000
+  trap 0x0000000d General Protection
+  gsbs 0x0000000000000000
+  fsbs 0x0000000000000000
+  err  0x--------00000000
+  rip  0x00000000004005f0
+  cs   0x------------0023
+  flag 0x0000000000010286
+  rsp  0x000030000005ce98
+  ss   0x------------001b
+err 0x0 (for PFs: User 4, Wr 2, Rd 1), aux 0x0000000000000000
+Addr 0x00000000004005f0 is in syz-executor at offset 0x00000000000005f0
+VM Regions for proc 540
+NR:                                     Range:       Prot,      Flags,               File,                Off
+00: (0x0000000000400000 - 0x00000000004b2000): 0x00000005, 0x00000001, 0xffff800101103840, 0x0000000000000000
+01: (0x00000000004b2000 - 0x00000000004b3000): 0x00000005, 0x00000002, 0xffff800101103840, 0x00000000000b2000
+02: (0x00000000006b3000 - 0x00000000006b6000): 0x00000003, 0x00000002, 0xffff800101103840, 0x00000000000b3000
+03: (0x00000000006b6000 - 0x0000000000925000): 0x00000003, 0x00000002, 0x0000000000000000, 0x0000000000000000
+04: (0x0000100000000000 - 0x0000100000024000): 0x00000007, 0x00000022, 0x0000000000000000, 0x0000000000000000
+05: (0x0000300000000000 - 0x0000300000001000): 0x00000003, 0x00000002, 0xffff800101103840, 0x0000000000000000
+06: (0x0000300000001000 - 0x0000300000005000): 0x00000003, 0x00000022, 0x0000000000000000, 0x0000000000000000
+07: (0x0000300000005000 - 0x0000300000007000): 0x00000007, 0x00000022, 0x0000000000000000, 0x0000000000000000
+08: (0x0000300000007000 - 0x0000300000031000): 0x00000003, 0x00000022, 0x0000000000000000, 0x0000000000000000
+09: (0x0000300000031000 - 0x000030000005d000): 0x00000007, 0x00000022, 0x0000000000000000, 0x0000000000000000
+10: (0x00007f7fff8ff000 - 0x00007f7fff9ff000): 0x00000003, 0x00000022, 0x0000000000000000, 0x0000000000000000
+
+Backtrace of user context on Core 1:
+	Offsets only matter for shared libraries
+#01 Addr 0x00000000004005f0 is in syz-executor at offset 0x00000000000005f0
+#02 Addr 0x0000000000410394 is in syz-executor at offset 0x0000000000010394
+#03 Addr 0x000000006b3a3000 has no VMR
+Unhandled user trap in vcore context from VC 0
+HW TRAP frame (partial) at 0xffffffffc82cc720 on core 5
+  rax  0x0000100000005d03
+  rbx  0x00007f7fff9feb80
+  rcx  0x0000000000000001
+  rdx  0x0000100000005d00
+  rbp  0x00007f7fff9feb60
+  rsi  0x00001000000046c0
+  rdi  0x00001000000046c0
+  r8   0x0000000000000000
+  r9   0x0000000000000000
+  r10  0x00007f7fff9feb80
+  r11  0x0000000000000200
+  r12  0x0000000000000001
+  r13  0x0000000000000000
+  r14  0x0000000000409520
+  r15  0x0000000000000000
+  trap 0x0000000d General Protection
+  gsbs 0x0000000000000000
+  fsbs 0x0000000000000000
+  err  0x--------00000000
+  rip  0x00000000004005f0
+  cs   0x------------0023
+  flag 0x0000000000010206
+  rsp  0x00007f7fff9feb48
+  ss   0x------------001b
+err 0x0 (for PFs: User 4, Wr 2, Rd 1), aux 0x0000000000000000
+Addr 0x00000000004005f0 is in syz-executor at offset 0x00000000000005f0
+VM Regions for proc 540
+NR:                                     Range:       Prot,      Flags,               File,                Off
+00: (0x0000000000400000 - 0x00000000004b2000): 0x00000005, 0x00000001, 0xffff800101103840, 0x0000000000000000
+01: (0x00000000004b2000 - 0x00000000004b3000): 0x00000005, 0x00000002, 0xffff800101103840, 0x00000000000b2000
+02: (0x00000000006b3000 - 0x00000000006b6000): 0x00000003, 0x00000002, 0xffff800101103840, 0x00000000000b3000
+03: (0x00000000006b6000 - 0x0000000000925000): 0x00000003, 0x00000002, 0x0000000000000000, 0x0000000000000000
+04: (0x0000100000000000 - 0x0000100000024000): 0x00000007, 0x00000022, 0x0000000000000000, 0x0000000000000000
+05: (0x0000300000000000 - 0x0000300000001000): 0x00000003, 0x00000002, 0xffff800101103840, 0x0000000000000000
+06: (0x0000300000001000 - 0x0000300000005000): 0x00000003, 0x00000022, 0x0000000000000000, 0x0000000000000000
+07: (0x0000300000005000 - 0x0000300000007000): 0x00000007, 0x00000022, 0x0000000000000000, 0x0000000000000000
+08: (0x0000300000007000 - 0x0000300000031000): 0x00000003, 0x00000022, 0x0000000000000000, 0x0000000000000000
+09: (0x0000300000031000 - 0x000030000005d000): 0x00000007, 0x00000022, 0x0000000000000000, 0x0000000000000000
+10: (0x00007f7fff8ff000 - 0x00007f7fff9ff000): 0x00000003, 0x00000022, 0x0000000000000000, 0x0000000000000000
+
+Backtrace of user context on Core 5:
+	Offsets only matter for shared libraries
+#01 Addr 0x00000000004005f0 is in syz-executor at offset 0x00000000000005f0
+#02 Addr 0x0000000000410394 is in syz-executor at offset 0x0000000000010394
+#03 Addr 0x00009214b0000000 has no VMR
+Unhandled user trap in vcore context from VC 0
+HW TRAP frame (partial) at 0xffffffffc82cbaa0 on core 0
+  rax  0x0000100000005df0
+  rbx  0x00007f7fff9feaf0
+  rcx  0x00000000004368ee
+  rdx  0x0000100000005d00
+  rbp  0x00007f7fff9fead0
+  rsi  0x00001000000046c0
+  rdi  0x00001000000046c0
+  r8   0x0000000000000000
+  r9   0x0000000000000000
+  r10  0x00007f7fff9feaf0
+  r11  0x0000000000000200
+  r12  0x0000000000000001
+  r13  0x0000000000000000
+  r14  0x0000000000415400
+  r15  0x0000000000000000
+  trap 0x0000000d General Protection
+  gsbs 0x0000000000000000
+  fsbs 0x0000000000000000
+  err  0x--------00000000
+  rip  0x00000000004005f0
+  cs   0x------------0023
+  flag 0x0000000000010283
+  rsp  0x00007f7fff9feab8
+  ss   0x------------001b
+err 0x0 (for PFs: User 4, Wr 2, Rd 1), aux 0x0000000000000000
+Addr 0x00000000004005f0 is in syz-executor at offset 0x00000000000005f0
+VM Regions for proc 506
+NR:                                     Range:       Prot,      Flags,               File,                Off
+00: (0x0000000000400000 - 0x00000000004b2000): 0x00000005, 0x00000001, 0xffff800101103840, 0x0000000000000000
+01: (0x00000000004b2000 - 0x00000000004b3000): 0x00000005, 0x00000002, 0xffff800101103840, 0x00000000000b2000
+02: (0x00000000006b3000 - 0x00000000006b6000): 0x00000003, 0x00000002, 0xffff800101103840, 0x00000000000b3000
+03: (0x00000000006b6000 - 0x0000000000925000): 0x00000003, 0x00000002, 0x0000000000000000, 0x0000000000000000
+04: (0x0000100000000000 - 0x0000100000024000): 0x00000007, 0x00000022, 0x0000000000000000, 0x0000000000000000
+05: (0x0000300000000000 - 0x0000300000001000): 0x00000003, 0x00000002, 0xffff800101103840, 0x0000000000000000
+06: (0x0000300000001000 - 0x0000300000005000): 0x00000003, 0x00000022, 0x0000000000000000, 0x0000000000000000
+07: (0x0000300000005000 - 0x0000300000007000): 0x00000007, 0x00000022, 0x0000000000000000, 0x0000000000000000
+08: (0x0000300000007000 - 0x0000300000019000): 0x00000003, 0x00000022, 0x0000000000000000, 0x0000000000000000
+09: (0x00007f7fff8ff000 - 0x00007f7fff9ff000): 0x00000003, 0x00000022, 0x0000000000000000, 0x0000000000000000
+
+Backtrace of user context on Core 0:
+	Offsets only matter for shared libraries
+#01 Addr 0x00000000004005f0 is in syz-executor at offset 0x00000000000005f0
+#02 Addr 0x0000000000410394 is in syz-executor at offset 0x0000000000010394
+#03 Addr 0x000000000c00007f has no VMR
+kernel panic at kern/src/pagemap.c:222, from core 0: assertion failed: page && pm_slot_check_refcnt(*page->pg_tree_slot)
+Entering Nanwan's Dungeon on Core 0 (Ints on):

pkg/report/testdata/akaros/report/4

@@ -0,0 +1,5 @@
+TITLE: assertion failed: n >= sizeof(struct kdirent)
+
+kernel panic at kern/src/ns/sysfile.c:719, from core 1: assertion failed: n >= sizeof(struct kdirent)
+
+Entering Nanwan's Dungeon on Core 1 (Ints on):