BU050520_EW01
HP Tru64 UNIX: V5.1B-3, Potential hang

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 Advisory Information
 

RELEASE DATE: 1 June 2005

Temporarily put on hold and re-released 3 June 2005

DESCRIPTION

This patch fixes the following two potential hangs.

The first hang may be seen by customers running vfast or defragment on an AdvFS domain, if the system is in a cluster. A forced crash during the hang produces the following two stack traces.

0 thread_block
1 sleep_prim
2 mpsleep
3 insert_actRange_onto_list
4 msfs_flush_and_invalidate
5 cfs_comm_open
6 cfscall_open
7 cfs_open
8 vn_open
9 copen
10 syscall
11 _Xsyscall

AND

0 thread_block
1 lock_write
2 cfs_condio_cc_excl_mode_enter
3 migrate_get_clu_locks
4 migrate_normal
5 mig_migrate
6 bs_migrate
7 ss_vd_migrate
8 ss_move_file
9 ss_work_thd_pool

The second hang may be seen by customers with an AdvFS clone mounted and at least two threads doing memory mapping to the same file. A forced crash during the hang produces the following two stack traces.

0 thread_block
1 lock_read
2 cow_get_locks
3 bs_cow_pg
4 bs_cow
5 bs_pinpg_clone
6 bs_pinpg_get
7 msfs_getpage
8 u_vp_fault
9 u_map_fault
10 vm_fault
11 trap
12 _XentMM

AND

0 thread_block
1 lock_write
2 msfs_mmap
3 smmap
4 syscall
5 _Xsyscall

Audience
Any system running HP Tru64 UNIX V5.1B-3 and as described above.

 
SCOPE

HP Tru64 UNIX V5.1B-3

 
RESOLUTION

HP is releasing the following Early Release Patch kit (ERP) publicly for use by any customer. The ERP kits use dupatch to install and will not install over any Customer Specific Patches (CSPs) that have file intersections with the ERP.

The fixes contained in the ERP kit are scheduled to be available in the following mainstream patch kit:

HP Tru64 UNIX 5.1B-4

The ERP kit distributes

 /sys/BINARY/advfs.mod
 /usr/sys/kern/lockinfo.c

An ERP kit is available for the following version:

HP Tru64 UNIX 5.1B-3
PREREQUISITE: HP Tru64 UNIX with 5.1B-3 installed
ERP Kit Name: T64KIT0025601-V51BB26-E-20050513.tar
Kit Location: http://www.itrc.hp.com/service/patch/patchDetail.do?patchid=T64KIT0025601-V51BB26-E-20050513