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pkg/report: handle syzkaller binaries

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syzkallerNNN binaries are coming from pkg/repro.
This commit is contained in:
Dmitry Vyukov 2017-12-12 13:29:45 +01:00
parent 081721ff15
commit 1b3ae9a6d0
3 changed files with 54 additions and 2 deletions
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1
pkg/osutil/fileutil.go
View File

@ -42,6 +42,7 @@ func CopyFile(oldFile, newFile string) error {
// WriteTempFile writes data to a temp file and returns its name.
func WriteTempFile(data []byte) (string, error) {
// Note: pkg/report knows about "syzkaller" prefix as it appears in crashes as process name.
f, err := ioutil.TempFile("", "syzkaller")
if err != nil {
return "", fmt.Errorf("failed to create a temp file: %v", err)

7
pkg/report/linux.go
View File

@ -188,7 +188,9 @@ func (ctx *linux) Parse(output []byte) *Report {
rep.Report = append(rep.Report, report...)
rep.Corrupted = ctx.isCorrupted(title, report, format)
// Executor PIDs are not interesting.
rep.Title = executorRe.ReplaceAllLiteralString(rep.Title, "syz-executor")
rep.Title = executorBinRe.ReplaceAllLiteralString(rep.Title, "syz-executor")
// syzkaller binaries are coming from repro.
rep.Title = syzkallerBinRe.ReplaceAllLiteralString(rep.Title, "syzkaller")
// Replace that everything looks like an address with "ADDR",
// addresses in descriptions can't be good regardless of the oops regexps.
rep.Title = addrRe.ReplaceAllString(rep.Title, "${1}ADDR")
@ -428,7 +430,8 @@ var (
decNumRe = regexp.MustCompile(`([^a-zA-Z])[0-9]{5,}`)
funcRe = regexp.MustCompile(`([a-zA-Z][a-zA-Z0-9_.]+)\+0x[0-9a-z]+/0x[0-9a-z]+`)
cpuRe = regexp.MustCompile(`CPU#[0-9]+`)
executorRe = regexp.MustCompile(`syz-executor[0-9]+((/|:)[0-9]+)?`)
executorBinRe = regexp.MustCompile(`syz-executor[0-9]+((/|:)[0-9]+)?`)
syzkallerBinRe = regexp.MustCompile(`syzkaller[0-9]+((/|:)[0-9]+)?`)
)
var linuxCorruptedTitles = []*regexp.Regexp{

48
pkg/report/testdata/linux/report/131 vendored Normal file
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@ -0,0 +1,48 @@
TITLE: BUG: using __this_cpu_read() in preemptible [ADDR] code: syzkaller
syzkaller login: [ 35.184476] BUG: using __this_cpu_read() in preemptible [00000000] code: syzkaller195313/3344
[ 35.193222] caller is __this_cpu_preempt_check+0x1c/0x20
[ 35.198727] CPU: 1 PID: 3344 Comm: syzkaller195313 Not tainted 4.9.68-gfb66dc2 #107
[ 35.206487] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[ 35.215825] ffff8801c8e476d8 ffffffff81d90889 0000000000000001 ffffffff83c17800
[ 35.223786] ffffffff83f42ec0 ffff8801c7643000 0000000000000003 ffff8801c8e47718
[ 35.231779] ffffffff81df7854 ffff8801c8e47730 ffffffff83f42ec0 dffffc0000000000
[ 35.239734] Call Trace:
[ 35.242294] [<ffffffff81d90889>] dump_stack+0xc1/0x128
[ 35.247625] [<ffffffff81df7854>] check_preemption_disabled+0x1d4/0x200
[ 35.254346] [<ffffffff81df78bc>] __this_cpu_preempt_check+0x1c/0x20
[ 35.260808] [<ffffffff833f3f78>] ipcomp_init_state+0x188/0x930
[ 35.266833] [<ffffffff81232141>] ? __lock_is_held+0xa1/0xf0
[ 35.272602] [<ffffffff83360470>] ipcomp4_init_state+0xb0/0x7d0
[ 35.278628] [<ffffffff833d2677>] __xfrm_init_state+0x3e7/0xb30
[ 35.284654] [<ffffffff833d2dda>] xfrm_init_state+0x1a/0x20
[ 35.290339] [<ffffffff8356cb49>] pfkey_add+0x1fb9/0x3470
[ 35.295843] [<ffffffff8356ab90>] ? pfkey_delete+0x360/0x360
[ 35.301604] [<ffffffff83561f00>] ? pfkey_seq_stop+0x80/0x80
[ 35.307382] [<ffffffff82eea81a>] ? __skb_clone+0x24a/0x7d0
[ 35.313066] [<ffffffff8356ab90>] ? pfkey_delete+0x360/0x360
[ 35.318831] [<ffffffff835645ee>] pfkey_process+0x61e/0x730
[ 35.324509] [<ffffffff83563fd0>] ? pfkey_send_new_mapping+0x11b0/0x11b0
[ 35.331317] [<ffffffff81238c3b>] ? trace_hardirqs_on_caller+0x38b/0x590
[ 35.338125] [<ffffffff83565e99>] pfkey_sendmsg+0x3a9/0x760
[ 35.343802] [<ffffffff83565af0>] ? pfkey_spdget+0x820/0x820
[ 35.349568] [<ffffffff82ecfb9a>] sock_sendmsg+0xca/0x110
[ 35.355070] [<ffffffff82ed1791>] ___sys_sendmsg+0x6d1/0x7e0
[ 35.360832] [<ffffffff82ed10c0>] ? copy_msghdr_from_user+0x550/0x550
[ 35.367549] [<ffffffff81462e67>] ? __lru_cache_add+0x187/0x250
[ 35.373571] [<ffffffff81465569>] ? lru_cache_add+0xd9/0x1e0
[ 35.379335] [<ffffffff814cc2b2>] ? handle_mm_fault+0xb12/0x2530
[ 35.385449] [<ffffffff838aa11c>] ? _raw_spin_unlock+0x2c/0x50
[ 35.391387] [<ffffffff814cbe8e>] ? handle_mm_fault+0x6ee/0x2530
[ 35.397498] [<ffffffff81232141>] ? __lock_is_held+0xa1/0xf0
[ 35.403261] [<ffffffff814cb7a0>] ? __pmd_alloc+0x410/0x410
[ 35.408938] [<ffffffff815cd8b8>] ? __fget_light+0x158/0x1e0
[ 35.414709] [<ffffffff815cd958>] ? __fdget+0x18/0x20
[ 35.419865] [<ffffffff82ed37c6>] __sys_sendmsg+0xd6/0x190
[ 35.425453] [<ffffffff82ed36f0>] ? SyS_shutdown+0x1b0/0x1b0
executing program
[ 35.431217] [<ffffffff810dd47c>] ? __do_page_fault+0x5ec/0xd40
[ 35.437239] [<ffffffff810dd24d>] ? __do_page_fault+0x3bd/0xd40
[ 35.443262] [<ffffffff81238c3b>] ? trace_hardirqs_on_caller+0x38b/0x590
[ 35.450067] [<ffffffff82ed38ad>] SyS_sendmsg+0x2d/0x50
[ 35.455398] [<ffffffff838aa9c5>] entry_SYSCALL_64_fastpath+0x23/0xc6