Opened 8 years ago

Last modified 8 months ago

#8115 assigned bug

vm_page_fault: unhandled page at 0xdeadbeef, ip 0x8006176d

Reported by: humdinger Owned by: mmlr
Priority: normal Milestone: R1
Component: System/Kernel Version: R1/Development
Keywords: port heap Cc:
Blocked By: Blocking:
Has a Patch: no Platform: All

Description

This is hrev42901.

I recently had a KDL while only having idly open 2 Tracker windows, a query result window, a Mail window. Plus a Web+ with ca. 6 tabs, 4 of those loading pages.

First line:

PANIC: vm_page_fault: unhandled page fault in kernel space at 0xdeadbeef, ip 0x8006176d

The rest attached as KDL.jpg.

Attachments (1)

KDL.JPG (326.3 KB ) - added by humdinger 8 years ago.
KDL

Download all attachments as: .zip

Change History (6)

by humdinger, 8 years ago

Attachment: KDL.JPG added

KDL

comment:1 by anevilyak, 8 years ago

Owner: changed from axeld to mmlr
Status: newassigned

Looks like an uninitialized pointer in the ports code somewhere...

in reply to:  1 ; comment:2 by mmlr, 8 years ago

Replying to anevilyak:

Looks like an uninitialized pointer in the ports code somewhere...

Actually it looks like use of an already freed pointer. It's similar to the other port heap issues reported. Interestingly it actually ends up in 0xdeadbeef, which could now come from either heap implementation, the old heap still used by the port code, and the slab we currently use as kernel heap. Until now I thought there weren't any 0xdeadbeef's in those KDLs, so it may point at the slab, seeing that we only introduced 0xdeadbeef there last week.

in reply to:  2 comment:3 by mmlr, 8 years ago

Replying to mmlr:

Until now I thought there weren't any 0xdeadbeef's in those KDLs, so it may point at the slab, seeing that we only introduced 0xdeadbeef there last week.

Ah never mind, I see now that this was against hrev42901, which didn't yet include those changes.

comment:4 by bonefish, 6 years ago

Keywords: port heap added; vm_page_fault 0xdeadbeef removed

comment:5 by waddlesplash, 8 months ago

Anyone seen this since?

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