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On May 18, 11:15am, blair.sadewitz@xxxxxxxxx (blair.sadewitz@xxxxxxxxx) wrote:
-- Subject: kern/36358: Page fault trap at malloc() in pathname_get() when ve
| >Number: 36358
| >Category: kern
| >Synopsis: Page fault trap at malloc() in pathname_get() when veriexec
is enabled
| >Confidential: no
| >Severity: critical
| >Priority: high
| >Responsible: kern-bug-people
| >State: open
| >Class: sw-bug
| >Submitter-Id: net
| >Arrival-Date: Fri May 18 11:15:00 +0000 2007
| >Originator: Blair Sadewitz
| >Release: 4.99.20/i386
| >Organization:
| >Environment:
| NetBSD/i386 4.99.20 with custom kernel
| >Description:
| I can reliably reproduce this problem by building the kernel with make -j. I
don't have a backtrace, but the path is something like:
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| vn_open() -> pathname_get() -> malloc()
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| I get a page fault trap when malloc tries to allocate memory. I haven't
looked into this much yet as I've got to get to bed, but this problem doesn't
occur with a snapshot kernel (generic.mp) from 5/13.
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| If I don't build veriexec into the kernel, it doesn't occur. Another user
reported this problem to current-users within the last day or two.
| >How-To-Repeat:
| Follow the above code path. ;)
| >Fix:
| Disabling verified exec is a workaround, but I'm not sure what the actual
problem is.
Can you post the full trace?
christos
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