report: add a new package for report parsing and processing

Move vm.FindCrash to the new package.

2 files changed, 1 insertions, 145 deletions

diff --git a/vm/vm.go b/vm/vm.go
index 1fc52514b..675356928 100644
--- a/vm/vm.go
+++ b/vm/vm.go
@@ -4,7 +4,6 @@
 package vm
 
 import (
-	"bytes"
 	"errors"
 	"fmt"
 	"io"
@@ -76,50 +75,4 @@ func LongPipe() (io.ReadCloser, io.WriteCloser, error) {
 	return r, w, err
 }
 
-// FindCrash searches kernel console output for oops messages.
-// Desc contains a more-or-less representative description of the first oops,
-// start and end denote region of output with oops message(s).
-func FindCrash(output []byte) (desc string, start int, end int, found bool) {
-	for pos := 0; pos < len(output); {
-		next := bytes.IndexByte(output[pos:], '\n')
-		if next != -1 {
-			next += pos
-		} else {
-			next = len(output)
-		}
-		for _, oops := range oopses {
-			match := bytes.Index(output[pos:next], oops)
-			if match == -1 {
-				continue
-			}
-			if !found {
-				found = true
-				start = pos
-				desc = string(output[pos+match : next])
-				if desc[len(desc)-1] == '\r' {
-					desc = desc[:len(desc)-1]
-				}
-			}
-			end = next
-		}
-		pos = next + 1
-	}
-	return
-}
-
-var (
-	oopses = [][]byte{
-		[]byte("Kernel panic"),
-		[]byte("BUG:"),
-		[]byte("kernel BUG"),
-		[]byte("WARNING:"),
-		[]byte("INFO:"),
-		[]byte("unable to handle"),
-		[]byte("Unable to handle kernel"),
-		[]byte("general protection fault"),
-		[]byte("UBSAN:"),
-		[]byte("unreferenced object"),
-	}
-
-	TimeoutErr = errors.New("timeout")
-)
+var TimeoutErr = errors.New("timeout")
diff --git a/vm/vm_test.go b/vm/vm_test.go
deleted file mode 100644
index d83ad98fa..000000000
--- a/vm/vm_test.go
+++ /dev/null
@@ -1,97 +0,0 @@
-// Copyright 2015 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 vm
-
-import (
-	"strings"
-	"testing"
-)
-
-func TestFindCrash(t *testing.T) {
-	tests := map[string]string{
-		`
-[   50.583499] something 
-[   50.583499] BUG: unable to handle kernel paging request at 00000000ffffff8a
-[   50.583499] IP: [<     inline     >] list_del include/linux/list.h:107 
-`: "BUG: unable to handle kernel paging request at 00000000ffffff8a",
-		`
-[   50.583499] something
-[   50.583499] INFO: rcu_sched self-detected stall on CPU
-[   50.583499]         0: (20822 ticks this GP) idle=94b/140000000000001/0
-`: "INFO: rcu_sched self-detected stall on CPU",
-		`
-[   50.583499] general protection fault: 0000 [#1] SMP KASAN
-[   50.583499] Modules linked in: 
-`: "general protection fault: 0000 [#1] SMP KASAN",
-		`
-[   50.583499] BUG: unable to handle kernel NULL pointer dereference at 000000000000003a
-[   50.583499] Modules linked in: 
-`: "BUG: unable to handle kernel NULL pointer dereference at 000000000000003a",
-		`
-[   50.583499] WARNING: CPU: 2 PID: 2636 at ipc/shm.c:162 shm_open+0x74/0x80()
-[   50.583499] Modules linked in: 
-`: "WARNING: CPU: 2 PID: 2636 at ipc/shm.c:162 shm_open+0x74/0x80()",
-		`
-[   50.583499] BUG: KASAN: use after free in remove_wait_queue+0xfb/0x120 at addr ffff88002db3cf50
-[   50.583499] Write of size 8 by task syzkaller_execu/10568 
-`: "BUG: KASAN: use after free in remove_wait_queue+0xfb/0x120 at addr ffff88002db3cf50",
-		`
-BUG UNIX (Not tainted): kasan: bad access detected
-`: "",
-		`
-[   50.583499] [ INFO: possible circular locking dependency detected ]
-[   50.583499] 4.3.0+ #30 Not tainted
-`: "INFO: possible circular locking dependency detected ]",
-		`
-BUG: unable to handle kernel paging request at 00000000ffffff8a
-IP: [<ffffffff810a376f>] __call_rcu.constprop.76+0x1f/0x280 kernel/rcu/tree.c:3046
-`: "BUG: unable to handle kernel paging request at 00000000ffffff8a",
-		`
-==================================================================
-BUG: KASAN: slab-out-of-bounds in memcpy+0x1d/0x40 at addr ffff88003a6bd110
-Read of size 8 by task a.out/6260
-`: "BUG: KASAN: slab-out-of-bounds in memcpy+0x1d/0x40 at addr ffff88003a6bd110",
-		`
-[   50.583499] unreferenced object 0xffff880039a55260 (size 64):
-[   50.583499]   comm "executor", pid 11746, jiffies 4298984475 (age 16.078s)
-`: "unreferenced object 0xffff880039a55260 (size 64):",
-		`
-[   50.583499] UBSAN: Undefined behaviour in kernel/time/hrtimer.c:310:16
-[   50.583499] signed integer overflow:
-`: "UBSAN: Undefined behaviour in kernel/time/hrtimer.c:310:16",
-		`
-------------[ cut here ]------------
-kernel BUG at fs/buffer.c:1917!
-invalid opcode: 0000 [#1] SMP
-`: "kernel BUG at fs/buffer.c:1917!",
-		`
-BUG: sleeping function called from invalid context at include/linux/wait.h:1095 
-in_atomic(): 1, irqs_disabled(): 0, pid: 3658, name: syz-fuzzer 
-`: "BUG: sleeping function called from invalid context at include/linux/wait.h:1095 ",
-		`
-------------[ cut here ]------------
-WARNING: CPU: 3 PID: 1975 at fs/locks.c:241
-locks_free_lock_context+0x118/0x180()
-`: "WARNING: CPU: 3 PID: 1975 at fs/locks.c:241",
-	}
-	for log, crash := range tests {
-		if strings.Index(log, "\r\n") != -1 {
-			continue
-		}
-		tests[strings.Replace(log, "\n", "\r\n", -1)] = crash
-	}
-	for log, crash := range tests {
-		desc, _, _, found := FindCrash([]byte(log))
-		//t.Logf("%v\nexpect '%v', found '%v'\n", log, crash, desc)
-		if !found && crash != "" {
-			t.Fatalf("did not find crash message '%v' in:\n%v", crash, log)
-		}
-		if found && crash == "" {
-			t.Fatalf("found bogus crash message '%v' in:\n%v", desc, log)
-		}
-		if desc != crash {
-			t.Fatalf("extracted bad crash message:\n%v\nwant:\n%v", desc, crash)
-		}
-	}
-}