KDL when iterating over files in the filesystem (DiskUsage).

[bga]

I can reproduce this on my installation 100% of the time. If I run DiskUsage in my boot disk, it will take a lot of time to process all files (I have literally millions of files in this partition) and, at some point during this time, it ends up trowing the system to KDL with a panic:

PANIC: ASSERT FAILED (src/system/kernel/vm/vm_page.cpp:1765): sReservedPages >= count

The machine has plenty of memory (3 Gb available to the OS out of 4 Gb total. 1 Gb is stolen by two video cards with 512 Mb of memory each).

See attached screenshot for full stack trace.

[bga]

KDL stack trace

[oco]

I think i have another test case that lead to the same error : i run a query to search all files of type "audio". I have many partitions with lots of files (two haiku source tree at least). It seems there is a leak somewhere while running this kind of queries, even if no files are found. After a while (about one hour), i have the above error (see attached back trace). My machine have 4 Gb of memory (well 3 Gb). The problem exist with or without a swap file. I was not able to reproduce it on an older one with only 512 Mo of RAM.

[bga]

I never got that anymore (bur I never tried DiskUsage again anyway). Interesting enough, my machine also has 4 Gb of memory (3 because of my video cards). I wonder if this is not an edge case not being correctly handled in the VM.

[bonefish]

Given that major work has been done on the VM since the bug has been reported (particularly in 2010) and no more recent reports of the issue exist, so I'm closing the ticket. Please reopen, if encountered again.