aleatory vm_page_fault KDL error (usb hub or card reader)

[un_spacyar]

Aleatory, Haiku enter in KDL showing "PANIC: vm_page_fault: unhandled page fault in kernel space at..."

This error not appears to be related to some application, or specific operation. I attach two screenshots, showing the same error, but asociated a differents aplications:

One appeared when closed the "Media Preferences"; and another during the execution of a script that call the "sync" command.

Haiku revision 45740 (however, I had the same issue with Alpha 4.1 too)

[un_spacyar]

KDL capture

[un_spacyar]

KDL capture (another one)

[bonefish]

Might be related to #4473 and/or #4157.

Have you by any chance used a USB stick or disk during the session?

BTW, please just leave the keywords field of the ticket empty when you report something.

[un_spacyar]

I'm not sure, but is highly probably. If can be related to USB issues, you must know the following:

In my syslog, I get the following error constantly: KERN: usb error ehci -1: qtd (0x222e100) error: 0x800d8d40 (I get one message by second, approximately)

My LCD Screen is also a USB hub (maybe is related to this).

I will disconect / disable all USB ports and devices, and check if I get the error again.

PD: sorry for the keywords ;-)

[un_spacyar]

well, after 10 days of testing, the problem appears to be related to the USB-Card reader/hub included in my monitor (Dell U2410). I disconected monitor's USB cable and no KDL appeared again. Also, dissapeared the "KERN: usb error ehci -1: qtd (0x222e100) error: 0x800d8d40" error from Syslog.

I used another USB devices (like External harddisks), with the USB ports from the motherboard, and no errors were found.

[ttcoder]

Was seeing that one much with Dane in Alpha4.1 days and for some time afterwards; interested to see if it's gone for good in recent revs. (45800+)

[un_spacyar]

I retested it with the following night build: 46508

However, I get the same error in the syslog file, when I connected the USB cable from the LCD:

KERN: usb hub 22: port 0: new device connected KERN: usb hub 28: port 0: new device connected KERN: usb hub 34: port 0: new device connected KERN: usb_disk: device reports a lun count of 1 KERN: usb_disk: vendor_identification "Generic " KERN: usb_disk: product_identification "Ultra HS-SD/MMC" KERN: usb_disk: product_revision_level "1.82" KERN: usb error ehci -1: qtd (0x2b93380) error: 0x000d8d40 KERN: usb error ehci -1: qtd (0x2b93e80) error: 0x800d8d40 KERN: usb_disk: got device name "Generic Ultra HS-SD/MMC 1.82": No error KERN: usb error ehci -1: qtd (0x2b94980) error: 0x800d8d40 KERN: usb error ehci -1: qtd (0x2b96380) error: 0x800d8d40 KERN: usb error ehci -1: qtd (0x2b97d80) error: 0x800d8d40 KERN: usb error ehci -1: qtd (0x2b99780) error: 0x800d8d40 KERN: usb error ehci -1: qtd (0x2b9b180) error: 0x800d8d40 KERN: usb error ehci -1: qtd (0x2b9cb80) error: 0x800d8d40 KERN: usb error ehci -1: qtd (0x2b9e580) error: 0x800d8d40 KERN: usb error ehci -1: qtd (0x2b9ff80) error: 0x800d8d40 KERN: usb error ehci -1: qtd (0x2ba1980) error: 0x800d8d40 KERN: usb error ehci -1: qtd (0x2ba3380) error: 0x800d8d40

[korli]

Replying to un_spacyar:

I retested it with the following night build: 46508

However, I get the same error in the syslog file, when I connected the USB cable from the LCD:

KERN: usb error ehci -1: qtd (0x2ba1980) error: 0x800d8d40 KERN: usb error ehci -1: qtd (0x2ba3380) error: 0x800d8d40

AFAIK this error message is "normal" (I usually comment this error message in local builds): the card reader is constantly asked for its disk status and fails successfully when no disk is present.

[un_spacyar]

I see... in that case, the KDL error may be related to USB issues; BUT the "KERN: usb error ehci -1: qtd " error is not related to the KDL reported initially. Correct?

Which can be the following steps? Install a recent nightly build, and check if appears another KDL?

Thank you!!!

[un_spacyar]

Hi. I retested this ticket in recents builds (hrev48341), and is still present. Certainly, is related to the USB hub included in the DELL U2410 LCD, because if I unplug the USB hub, there are no KDL (I had Haiku running for over a week, without KDL, when the USB hub is unplugged).

[un_spacyar]

Just an update:

Aparently, since hrev48574 can't be reproduced. Now I'm using hrev48744 and not had any problem. I will update again if appears again.

[pulkomandy]

ok, closing ticket for now then, we can reopen if you manage to trigger it again.