Runtime Panic Within Node Plugin
iyashu opened this issue · 10 comments
iyashu commented
We observed a go runtime panic within device local node plugin. Just putting out here to see if anyone can take look into it.
2021-06-07T16:57:10.817343241+05:30 stderr F I0607 16:57:10.817191 1 device-util.go:170] GetPart Error, {DiskName:sda Size:10737418240}
2021-06-07T16:57:10.91741737+05:30 stderr F I0607 16:57:10.917210 1 device-util.go:288] Disk: DiskName not correct
2021-06-07T16:57:10.917434131+05:30 stderr F I0607 16:57:10.917232 1 device-util.go:170] GetPart Error, {DiskName:sda Size:10737418240}
2021-06-07T16:57:13.019507828+05:30 stderr F I0607 16:57:13.019321 1 device-util.go:288] Disk: DiskName not correct
2021-06-07T16:57:13.019534179+05:30 stderr F I0607 16:57:13.019352 1 device-util.go:170] GetPart Error, {DiskName:sdd Size:3189013217280}
2021-06-07T16:57:13.019604142+05:30 stderr F I0607 16:57:13.019531 1 device-util.go:288] Disk: DiskName not correct
2021-06-07T16:57:13.019619593+05:30 stderr F I0607 16:57:13.019555 1 device-util.go:170] GetPart Error, {DiskName:sdd Size:3189013217280}
2021-06-07T16:57:13.618848367+05:30 stderr F I0607 16:57:13.618659 1 device-util.go:288] Disk: DiskName not correct
2021-06-07T16:57:13.618869735+05:30 stderr F I0607 16:57:13.618686 1 device-util.go:170] GetPart Error, {DiskName:sde Size:12000136527872}
2021-06-07T16:57:13.618873316+05:30 stderr F I0607 16:57:13.618697 1 device-util.go:107] Running WipeFS for Partition sdb 2
2021-06-07T16:57:13.919818946+05:30 stderr F I0607 16:57:13.919580 1 device-util.go:288] Disk: DiskName not correct
2021-06-07T16:57:13.919837104+05:30 stderr F I0607 16:57:13.919603 1 device-util.go:170] GetPart Error, {DiskName:sde Size:12000136527872}
2021-06-07T16:57:13.919840384+05:30 stderr F E0607 16:57:13.919664 1 runtime.go:73] Observed a panic: runtime.boundsError{x:0, y:0, signed:true, code:0x0} (runtime error: index out of range [0] with length 0)
2021-06-07T16:57:13.919843152+05:30 stderr F goroutine 103 [running]:
2021-06-07T16:57:13.919845434+05:30 stderr F k8s.io/apimachinery/pkg/util/runtime.logPanic(0x14b5ca0, 0xc000393a80)
2021-06-07T16:57:13.91985613+05:30 stderr F /Users/praveen.gt/go/src/github.com/openebs/device-localpv/vendor/k8s.io/apimachinery/pkg/util/runtime/runtime.go:69 +0x7b
2021-06-07T16:57:13.919858808+05:30 stderr F k8s.io/apimachinery/pkg/util/runtime.HandleCrash(0x0, 0x0, 0x0)
2021-06-07T16:57:13.919861079+05:30 stderr F /Users/praveen.gt/go/src/github.com/openebs/device-localpv/vendor/k8s.io/apimachinery/pkg/util/runtime/runtime.go:51 +0x89
2021-06-07T16:57:13.919863579+05:30 stderr F panic(0x14b5ca0, 0xc000393a80)
2021-06-07T16:57:13.919865765+05:30 stderr F /usr/local/opt/go/libexec/src/runtime/panic.go:969 +0x1b9
2021-06-07T16:57:13.919868366+05:30 stderr F github.com/openebs/device-localpv/pkg/device.wipefsAndCreatePart(0xc000cc8cd5, 0x3, 0x2, 0xc0004ac2a4, 0x24, 0x8a4000, 0xc000d085e0, 0xa, 0x0, 0x1)
2021-06-07T16:57:13.919870885+05:30 stderr F /Users/praveen.gt/go/src/github.com/openebs/device-localpv/pkg/device/device-util.go:107 +0x72f
2021-06-07T16:57:13.919873027+05:30 stderr F github.com/openebs/device-localpv/pkg/device.CreateVolume(0xc00073e780, 0x1, 0xc00073e780)
2021-06-07T16:57:13.91987519+05:30 stderr F /Users/praveen.gt/go/src/github.com/openebs/device-localpv/pkg/device/device-util.go:89 +0x3fd
2021-06-07T16:57:13.919877345+05:30 stderr F github.com/openebs/device-localpv/pkg/mgmt/volume.(*VolController).syncVol(0xc00048cae0, 0xc00073e780, 0x0, 0x0)
2021-06-07T16:57:13.919879533+05:30 stderr F /Users/praveen.gt/go/src/github.com/openebs/device-localpv/pkg/mgmt/volume/volume.go:91 +0x4b
2021-06-07T16:57:13.919882012+05:30 stderr F github.com/openebs/device-localpv/pkg/mgmt/volume.(*VolController).syncHandler(0xc00048cae0, 0xc0005a2340, 0x37, 0xc00083ddb0, 0x11e8954)
2021-06-07T16:57:13.919884183+05:30 stderr F /Users/praveen.gt/go/src/github.com/openebs/device-localpv/pkg/mgmt/volume/volume.go:57 +0x13d
2021-06-07T16:57:13.919886428+05:30 stderr F github.com/openebs/device-localpv/pkg/mgmt/volume.(*VolController).processNextWorkItem.func1(0xc00048cae0, 0x1362b20, 0xc0006ea560, 0x0, 0x0)
2021-06-07T16:57:13.919888691+05:30 stderr F /Users/praveen.gt/go/src/github.com/openebs/device-localpv/pkg/mgmt/volume/volume.go:230 +0xd7
2021-06-07T16:57:13.91989105+05:30 stderr F github.com/openebs/device-localpv/pkg/mgmt/volume.(*VolController).processNextWorkItem(0xc00048cae0, 0x1)
2021-06-07T16:57:13.919893251+05:30 stderr F /Users/praveen.gt/go/src/github.com/openebs/device-localpv/pkg/mgmt/volume/volume.go:240 +0x4d
2021-06-07T16:57:13.91989537+05:30 stderr F github.com/openebs/device-localpv/pkg/mgmt/volume.(*VolController).runWorker(0xc00048cae0)
2021-06-07T16:57:13.919897546+05:30 stderr F /Users/praveen.gt/go/src/github.com/openebs/device-localpv/pkg/mgmt/volume/volume.go:191 +0x2b
2021-06-07T16:57:13.91989968+05:30 stderr F k8s.io/apimachinery/pkg/util/wait.JitterUntil.func1(0xc0006a24f0)
2021-06-07T16:57:13.919901849+05:30 stderr F /Users/praveen.gt/go/src/github.com/openebs/device-localpv/vendor/k8s.io/apimachinery/pkg/util/wait/wait.go:152 +0x5f
2021-06-07T16:57:13.919903992+05:30 stderr F k8s.io/apimachinery/pkg/util/wait.JitterUntil(0xc0006a24f0, 0x3b9aca00, 0x0, 0x1, 0xc00011c780)
2021-06-07T16:57:13.919906101+05:30 stderr F /Users/praveen.gt/go/src/github.com/openebs/device-localpv/vendor/k8s.io/apimachinery/pkg/util/wait/wait.go:153 +0x105
2021-06-07T16:57:13.91990823+05:30 stderr F k8s.io/apimachinery/pkg/util/wait.Until(0xc0006a24f0, 0x3b9aca00, 0xc00011c780)
2021-06-07T16:57:13.9199107+05:30 stderr F /Users/praveen.gt/go/src/github.com/openebs/device-localpv/vendor/k8s.io/apimachinery/pkg/util/wait/wait.go:88 +0x4d
2021-06-07T16:57:13.919912858+05:30 stderr F created by github.com/openebs/device-localpv/pkg/mgmt/volume.(*VolController).Run
2021-06-07T16:57:13.919914971+05:30 stderr F /Users/praveen.gt/go/src/github.com/openebs/device-localpv/pkg/mgmt/volume/volume.go:177 +0x265
2021-06-07T16:57:13.921975666+05:30 stderr F panic: runtime error: index out of range [0] with length 0 [recovered]
2021-06-07T16:57:13.921990187+05:30 stderr F panic: runtime error: index out of range [0] with length 0
2021-06-07T16:57:13.922018166+05:30 stderr F
2021-06-07T16:57:13.922022345+05:30 stderr F goroutine 103 [running]:
2021-06-07T16:57:13.922025998+05:30 stderr F k8s.io/apimachinery/pkg/util/runtime.HandleCrash(0x0, 0x0, 0x0)
2021-06-07T16:57:13.922030533+05:30 stderr F /Users/praveen.gt/go/src/github.com/openebs/device-localpv/vendor/k8s.io/apimachinery/pkg/util/runtime/runtime.go:58 +0x10c
2021-06-07T16:57:13.922035537+05:30 stderr F panic(0x14b5ca0, 0xc000393a80)
2021-06-07T16:57:13.922039044+05:30 stderr F /usr/local/opt/go/libexec/src/runtime/panic.go:969 +0x1b9
2021-06-07T16:57:13.922046513+05:30 stderr F github.com/openebs/device-localpv/pkg/device.wipefsAndCreatePart(0xc000cc8cd5, 0x3, 0x2, 0xc0004ac2a4, 0x24, 0x8a4000, 0xc000d085e0, 0xa, 0x0, 0x1)
2021-06-07T16:57:13.922050847+05:30 stderr F /Users/praveen.gt/go/src/github.com/openebs/device-localpv/pkg/device/device-util.go:107 +0x72f
2021-06-07T16:57:13.922054326+05:30 stderr F github.com/openebs/device-localpv/pkg/device.CreateVolume(0xc00073e780, 0x1, 0xc00073e780)
2021-06-07T16:57:13.922057886+05:30 stderr F /Users/praveen.gt/go/src/github.com/openebs/device-localpv/pkg/device/device-util.go:89 +0x3fd
2021-06-07T16:57:13.922264779+05:30 stderr F github.com/openebs/device-localpv/pkg/mgmt/volume.(*VolController).syncVol(0xc00048cae0, 0xc00073e780, 0x0, 0x0)
2021-06-07T16:57:13.922272982+05:30 stderr F /Users/praveen.gt/go/src/github.com/openebs/device-localpv/pkg/mgmt/volume/volume.go:91 +0x4b
2021-06-07T16:57:13.922278953+05:30 stderr F github.com/openebs/device-localpv/pkg/mgmt/volume.(*VolController).syncHandler(0xc00048cae0, 0xc0005a2340, 0x37, 0xc00083ddb0, 0x11e8954)
2021-06-07T16:57:13.922283195+05:30 stderr F /Users/praveen.gt/go/src/github.com/openebs/device-localpv/pkg/mgmt/volume/volume.go:57 +0x13d
2021-06-07T16:57:13.922287216+05:30 stderr F github.com/openebs/device-localpv/pkg/mgmt/volume.(*VolController).processNextWorkItem.func1(0xc00048cae0, 0x1362b20, 0xc0006ea560, 0x0, 0x0)
2021-06-07T16:57:13.922291221+05:30 stderr F /Users/praveen.gt/go/src/github.com/openebs/device-localpv/pkg/mgmt/volume/volume.go:230 +0xd7
2021-06-07T16:57:13.922295171+05:30 stderr F github.com/openebs/device-localpv/pkg/mgmt/volume.(*VolController).processNextWorkItem(0xc00048cae0, 0x1)
2021-06-07T16:57:13.922299196+05:30 stderr F /Users/praveen.gt/go/src/github.com/openebs/device-localpv/pkg/mgmt/volume/volume.go:240 +0x4d
2021-06-07T16:57:13.922303001+05:30 stderr F github.com/openebs/device-localpv/pkg/mgmt/volume.(*VolController).runWorker(0xc00048cae0)
2021-06-07T16:57:13.92230684+05:30 stderr F /Users/praveen.gt/go/src/github.com/openebs/device-localpv/pkg/mgmt/volume/volume.go:191 +0x2b
2021-06-07T16:57:13.922310849+05:30 stderr F k8s.io/apimachinery/pkg/util/wait.JitterUntil.func1(0xc0006a24f0)
2021-06-07T16:57:13.922314835+05:30 stderr F /Users/praveen.gt/go/src/github.com/openebs/device-localpv/vendor/k8s.io/apimachinery/pkg/util/wait/wait.go:152 +0x5f
2021-06-07T16:57:13.922318811+05:30 stderr F k8s.io/apimachinery/pkg/util/wait.JitterUntil(0xc0006a24f0, 0x3b9aca00, 0x0, 0x1, 0xc00011c780)
2021-06-07T16:57:13.922322745+05:30 stderr F /Users/praveen.gt/go/src/github.com/openebs/device-localpv/vendor/k8s.io/apimachinery/pkg/util/wait/wait.go:153 +0x105
2021-06-07T16:57:13.922326806+05:30 stderr F k8s.io/apimachinery/pkg/util/wait.Until(0xc0006a24f0, 0x3b9aca00, 0xc00011c780)
2021-06-07T16:57:13.922330838+05:30 stderr F /Users/praveen.gt/go/src/github.com/openebs/device-localpv/vendor/k8s.io/apimachinery/pkg/util/wait/wait.go:88 +0x4d
2021-06-07T16:57:13.92233473+05:30 stderr F created by github.com/openebs/device-localpv/pkg/mgmt/volume.(*VolController).Run
2021-06-07T16:57:13.922338818+05:30 stderr F /Users/praveen.gt/go/src/github.com/openebs/device-localpv/pkg/mgmt/volume/volume.go:177 +0x265
akhilerm commented
@praveengt @iyashu Can you also provide the output of lsblk -b and parted /dev/sdX unit b print, for device sda, sdb, sdd and sde
akhilerm commented
Also, which is the version of device-driver that you are running?
praveengt commented
HI Akhil.
This is the latest version. The issue is because of the pvc name is not
state. Please check the parameter value for the pvc name in the call stack.
It is not pointing to an address.
…On 28-Jun-2021 at 6:22:11 PM, Akhil Mohan ***@***.***> wrote:
Also, which is the version of device-driver that you are running?
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iyashu commented
@akhilerm it happened once as of now and since the pod have been restarted we don't have the state of partition table during that error time interval. As per initial logs of device localpv, we are using plugin at 1cae175 commit id (but i think there is no major functional code changes happened after this commit id). Let me know if you still want get latest output of parted command (doesn't seems to be relevant here). Here is the output of lsblk to understand the disk & partitions created on the node bit better.
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
sda 8:0 0 10737418240 0 disk
|-sda1 8:1 0 10603183616 0 part /
|-sda14 8:14 0 3145728 0 part
`-sda15 8:15 0 130023424 0 part /boot
sdb 8:16 0 12000136527872 0 disk
|-sdb1 8:17 0 1048576 0 part
`-sdb2 8:18 0 9500467658752 0 part /var/lib/kubelet/pods/9c5a96b7-ca07-4d92-9cc8-ad3ca9e2c7ab/volumes/kubernetes.io~csi/pvc-40e33246-3bee-461d-824b-e0ccec803911/mount
sdc 8:32 0 12000136527872 0 disk
|-sdc1 8:33 0 1048576 0 part
`-sdc2 8:34 0 9500467658752 0 part /var/lib/kubelet/pods/9c5a96b7-ca07-4d92-9cc8-ad3ca9e2c7ab/volumes/kubernetes.io~csi/pvc-5d8d56cb-e291-4dfd-81ac-fb664dd5ec75/mount
sdd 8:48 0 3189013217280 0 disk
`-sdd1 8:49 0 3189011120128 0 part
sde 8:64 0 12000136527872 0 disk
|-sde1 8:65 0 1318553911296 0 part
| |-abc 254:0 0 483183820800 0 lvm /var/lib/abc
| |-xyz 254:1 0 161061273600 0 lvm /var/lib/xyz
| `-pqr 254:2 0 483183820800 0 lvm /var/lib/pqr
`-sde2 8:66 0 10681580519424 0 part
pawanpraka1 commented
This is the latest version. The issue is because of the pvc name is not
state. Please check the parameter value for the pvc name in the call stack.
It is not pointing to an address.
@praveengt the backtrace is suggesting that node daemonset is crashing in wipefsAndCreatePart. It seems like getAllPartsUsed returned an emplty list and we are trying to access the first entry which is not present. We are getting the vol name and I can see in the backtrace that the length is 36 (see this => 0xc0004ac2a4, 0x24).
@akhilerm, We should be checking if pList is not empty then only should proceed here https://github.com/openebs/device-localpv/blob/develop/pkg/device/device-util.go#L108.
pawanpraka1 commented
@akhilerm one thing we need to see that why we got this error
2021-06-07T16:57:10.817343241+05:30 stderr F I0607 16:57:10.817191 1 device-util.go:170] GetPart Error, {DiskName:sda Size:10737418240}
2021-06-07T16:57:10.91741737+05:30 stderr F I0607 16:57:10.917210 1 device-util.go:288] Disk: DiskName not correct
This is leading to empty partition list and causing the crash.
praveengt commented
This is expected, These are debug logs which needs to be removed. This is
what was planned as part of my refactoring, unfortunately not able to get
to it.
…On 28-Jun-2021 at 11:10:35 PM, Pawan Prakash Sharma < ***@***.***> wrote:
@akhilerm <https://github.com/akhilerm> one thing we need to see that why
we got this error
2021-06-07T16:57:10.817343241+05:30 stderr F I0607 16:57:10.817191 1 device-util.go:170] GetPart Error, {DiskName:sda Size:10737418240}
2021-06-07T16:57:10.91741737+05:30 stderr F I0607 16:57:10.917210 1 device-util.go:288] Disk: DiskName not correct
This is leading to empty partition list and causing the crash.
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praveengt commented
wipefsAndCreatePart(0xc000cc8cd5, 0x3, 0x2, 0xc0004ac2a4, 0x24,
0x8a4000, 0xc000d085e0, 0xa, 0x0, 0x1)
func wipefsAndCreatePart(disk string, start uint64, partitionName
string, size uint64, diskMetaName string) error {
Isn't Third parameter should be a string, I dont know how backtrace in
Solang is built, so not sure. Only problem with the theory is that the
same string is accesses multiple times in createVolume (caller od
wipfefs...) so if that is the issue it should panic in the caller
On 28-Jun-2021 at 11:34:07 PM, Praveen Kumar G T ***@***.***>
wrote:
… This is expected, These are debug logs which needs to be removed. This is
what was planned as part of my refactoring, unfortunately not able to get
to it.
On 28-Jun-2021 at 11:10:35 PM, Pawan Prakash Sharma <
***@***.***> wrote:
> @akhilerm <https://github.com/akhilerm> one thing we need to see that
> why we got this error
>
> 2021-06-07T16:57:10.817343241+05:30 stderr F I0607 16:57:10.817191 1 device-util.go:170] GetPart Error, {DiskName:sda Size:10737418240}
> 2021-06-07T16:57:10.91741737+05:30 stderr F I0607 16:57:10.917210 1 device-util.go:288] Disk: DiskName not correct
>
> This is leading to empty partition list and causing the crash.
>
> —
> You are receiving this because you were mentioned.
> Reply to this email directly, view it on GitHub
> <#20 (comment)>,
> or unsubscribe
> <https://github.com/notifications/unsubscribe-auth/AEOK42L2H3XBGLOD6TV7NDLTVCXZHANCNFSM47NPHE4Q>
> .
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akhilerm commented
@iyashu , I asked about the version, because there is a difference in the line numbers mentioned in the logs and commit 1cae175
I will add a check to make sure that the pList[] is not empty before proceeding.
Also, @praveengt the name is used for the first time here while logging which crashes while using pList[0]
akhilerm commented
Isn't Third parameter should be a string, I dont know how backtrace in
Golang is built,
string is passed as an address + length , so corresponding to string there will be 2 parameters in the stack trace.
Also, the last 0x0, 0x1 in the parameters specify the return value. Since the function returns an error, which is an interface, we have 2 values here.