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pkg/report: Label powerpc unreliable stack frames as questionable

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Add a second "questionable" regex to match the powerpc "(unreliable)"
format.

Signed-off-by: Andrew Donnellan <ajd@linux.ibm.com>
This commit is contained in:
Andrew Donnellan 2019-05-08 19:25:12 +10:00 committed by Dmitry Vyukov
parent 2233782fc1
commit 2755003a34
2 changed files with 42 additions and 4 deletions
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15
pkg/report/linux.go
View File

@ -26,7 +26,7 @@ type linux struct {
symbols map[string][]symbolizer.Symbol
ignores []*regexp.Regexp
consoleOutputRe *regexp.Regexp
questionableRe *regexp.Regexp
questionableRes []*regexp.Regexp
taskContext *regexp.Regexp
cpuContext *regexp.Regexp
guiltyFileBlacklist []*regexp.Regexp
@ -54,7 +54,10 @@ func ctorLinux(target *targets.Target, kernelSrc, kernelObj string, ignores []*r
ignores: ignores,
}
ctx.consoleOutputRe = regexp.MustCompile(`^(?:\*\* [0-9]+ printk messages dropped \*\* )?(?:.* login: )?(?:\<[0-9]+\>)?\[ *[0-9]+\.[0-9]+\](\[ *(?:C|T)[0-9]+\])? `)
ctx.questionableRe = regexp.MustCompile(`(\[\<[0-9a-f]+\>\])? \? +[a-zA-Z0-9_.]+\+0x[0-9a-f]+/[0-9a-f]+`)
ctx.questionableRes = []*regexp.Regexp{
regexp.MustCompile(`(\[\<[0-9a-f]+\>\])? \? +[a-zA-Z0-9_.]+\+0x[0-9a-f]+/[0-9a-f]+`),
regexp.MustCompile(`\(unreliable\)`), // powerpc
}
ctx.taskContext = regexp.MustCompile(`\[ *T[0-9]+\]`)
ctx.cpuContext = regexp.MustCompile(`\[ *C[0-9]+\]`)
ctx.eoi = []byte("<EOI>")
@ -290,9 +293,13 @@ func (ctx *linux) stripLinePrefix(line []byte, context string) ([]byte, bool) {
if context == "" {
return line, false
}
questionable := ctx.questionableRe.Match(line) && !bytes.Contains(line, ctx.eoi)
start := bytes.Index(line, []byte("] ")) + 2
return line[start:], questionable
for _, re := range ctx.questionableRes {
if re.Match(line) && !bytes.Contains(line, ctx.eoi) {
return line[start:], true
}
}
return line[start:], false
}
func (ctx *linux) extractContext(line []byte) string {

31
pkg/report/testdata/linux/report/386 vendored Normal file
View File

@ -0,0 +1,31 @@
TITLE: INFO: task hung in exit_aio
[ 284.633903] INFO: task syz-executor.11:6660 blocked for more than 143 seconds.
[ 284.635314] Not tainted 5.1.0-rc3-00035-g8ed86627f715 #7
[ 284.636048] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 284.636939] syz-executor.11 D12768 6660 2964 0x00040008
[ 284.637566] Call Trace:
[ 284.637880] [c000000001bb3530] [c000000001bb35a0] __rela_dyn_start+0x308828/0x345288 (unreliable)
[ 284.639509] [c000000001bb3710] [c0000000000286fc] __switch_to+0x43c/0x6d0
[ 284.640288] [c000000001bb3780] [c00000000138678c] __schedule+0x3cc/0xed0
[ 284.641041] [c000000001bb3860] [c0000000013872e0] schedule+0x50/0xd0
[ 284.641764] [c000000001bb3880] [c00000000138e22c] schedule_timeout+0x36c/0x810
[ 284.642590] [c000000001bb39a0] [c00000000138832c] wait_for_common+0xfc/0x220
[ 284.643397] [c000000001bb3a10] [c0000000005f8868] exit_aio+0x188/0x2a0
[ 284.644173] [c000000001bb3ad0] [c00000000016556c] mmput+0xbc/0x260
[ 284.644881] [c000000001bb3b00] [c000000000175ea4] do_exit+0x484/0x1300
[ 284.645623] [c000000001bb3be0] [c000000000176e44] do_group_exit+0x84/0x130
[ 284.646431] [c000000001bb3c20] [c000000000191df8] get_signal+0x218/0xfe0
[ 284.647441] [c000000001bb3d10] [c00000000002b0d0] do_notify_resume+0x220/0x640
[ 284.648573] [c000000001bb3e20] [c00000000000e644] ret_from_except_lite+0x70/0x74
[ 284.649519]
[ 284.649519] Showing all locks held in the system:
[ 284.650308] 1 lock held by khungtaskd/341:
[ 284.650859] #0: 00000000198c1183 (rcu_read_lock){....}, at: debug_show_all_locks+0x28/0x260
[ 284.651916] 1 lock held by in:imklog/2568:
[ 284.652457] #0: 000000000e39df3c (&f->f_pos_lock){+.+.}, at: __fdget_pos+0x88/0xb0
[ 284.653448] 1 lock held by sshd/2703:
[ 284.653855] #0: 00000000470f9d31 (&ei->i_mmap_sem){++++}, at: ext4_filemap_fault+0x48/0x90
[ 284.654803]
[ 284.654974] =============================================
[ 284.654974]