PANIC: memory already locked!

[jessicah]

PANIC: memory already locked!
Thread 10 "page writer" running on CPU 2
stack trace for thread 10 "page writer"
    kernel stack: 0x81e1000 to 0x81e22000

IOBuffer::LockMemory
IOSchedulerSimple::ScheduleRequest
<scsi_disk> das_io
BPrivate::AbstractModuleDevice::IO
devfs_io
vfs_vnode_io
do_iterative_fd_io_iterate
do_iterative_fd_io
<bfs> bfs_io
vfs_vnode_io
vfs_asynchronous_write_pages
VMVnodeCache::WriteAsync
PageWriteTransfer
PageWriterRun
page_writer
common_thread_entry

More detail available in attached image.

[jessicah]

KDL for PANIC: memory already locked!

[jessicah]

I still have the KDL session open, if there is any additional output that would be deemed useful needed :-)

[korli]

Please provide revision and architecture (I suppose it's x86 but Platform value is "All").

[jessicah]

Ah, I just found command in KDL to get the hrev :-) It's hrev49881 x86_gcc2 hybrid installation.

[jessicah]

Well, lost my KDL session :( I tried to dump the IOBuffer from the IORequest, and it dropped into a loop, printing the same data in the last two columns whilst the first kept counting crazily, e.g.

[1136540] 0x3030303030dd78e9, 1959118821431193648
[1136541] 0xc00040b8222de923, 6206045233607618570
[1136542] 0x3030303030dd78e9, 1959118821431193648
[1136543] 0xc00040b8222de923, 8406625397624549386
[1136544] 0x3030303030dd78e9, 1959118821431193648
[1136545] 0xc00040b8222de923, 6206045233607618570
[1136546] 0x3030303030dd78e9, 1959118821431193648
[1136547] 0xc00040b8222de923, 8406625397624549386

Output of vnode 0xf46d45a8:

device: 3, id: 2097154
ref_count: 2
private_node: 0xdc81d838
mount: 0x8280aa80
covered_by: 0x00000000
covers: 0x00000000
cache: 0x8284a880
type: 0x8000
flags: ----
advisory_lock: 0x00000000

Unfortunately, other info I had printed out in the KDL session is lost =/