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DESCRIPTION
The Early Release Patch (ERP) Kits delivered in this Engineering
Advisory (EA) will correct the following tape I/O related issues
reported on the HP Tru64
UNIX operating system:
-
Potential Kernel Memory Fault (KMF)
A potential KMF while processing tape I/O which is the
primary concern of
this advisory
-
ccfg_MakeDeviceIdentWWID: Invalid deviceID: 0x... message
suppression
Suppress ccfg messages written to /var/adm/messages which are
incorrectly output with some tape devices
Under HP Tru64
UNIX, a Kernel Memory Fault (KMF) can potentially occur while
processing tape I/O. There are many variations of this panic, but
most will follow the characteristics listed below.
Binary Error Log entries
Often
just before the panic, a tape path is reported lost as shown in the
binary.errlog event stream:
02-MAY-22:35:56 COMPAQ SuperDLT1 2E2E ccmn_path_ping3; Path to
device has been reduced
02-MAY-22:35:58 panic (cpu03) : kernel memory fault
Crash Characteristics
The routine
ctape_ioctl,
ctape_done,
or ctape_passthru_done
will be on the stack. The actual kernel memory fault (KMF) will
occur later in processing after one of the three previously
mentioned routines. The most common situation is having
ctape_ioctl on the
stack and encountering the kernel memory fault in
ctape_get_io_ccb3 .
As seen in these examples of stack traces, the KMF can occur in a
variety of places after
ctape_ioctl or the ctape io done paths. Please note
that this list is not exhaustive but represents a sampling of the
actual stack traces that have been reported.
> 0 stop_secondary_cpu src/kernel/arch/alpha/cpu.c : 1339
1 panic src/kernel/bsd/subr_prf.c : 1296
2 event_timeout src/kernel/arch/alpha/cpu.c : 2227
3 printf src/kernel/bsd/subr_prf.c : 981
4 panic src/kernel/bsd/subr_prf.c : 1353
5 trap src/kernel/arch/alpha/trap.c : 2273
6 _XentMM src/kernel/arch/alpha/locore.s : 2143
7 ccmn_io_ccb_bld3 src/kernel/io/cam/pdrv3_common.c : 1696
8 ctape_get_io_ccb src/kernel/io/cam/cam_tape.c : 1710
9 ctape_mode_sns src/kernel/io/cam/cam_tape.c : 11247
10 ctape_ioctl src/kernel/io/cam/cam_tape.c : 7005
11 drd_local_ioctl src/kernel/io/drd/drd_local.c : 832
12 drd_ics_ioctl_v1 (source file cannot be determined)
13 svr_drd_ics_ioctl_v1 tnc_gen/icssvr_drd_gen.c : 436
14 icssvr_daemon_from_poolsrc/kernel/tnc_common/tnc_ics/ics_svr_mgmt.c : 795
> 0 stop_secondary_cpu src/kernel/arch/alpha/cpu.c : 1339
1 panic src/kernel/bsd/subr_prf.c : 1296
2 event_timeout src/kernel/arch/alpha/cpu.c : 2227
3 printf src/kernel/bsd/subr_prf.c : 981
4 panic src/kernel/bsd/subr_prf.c : 1353
5 trap src/kernel/arch/alpha/trap.c : 2273
6 _XentMM src/kernel/arch/alpha/locore.s : 2143
7 ctape_generic_passthru src/kernel/io/cam/cam_tape.c : 14997
8 ctape_ioctl src/kernel/io/cam/cam_tape.c : 7507
9 drd_local_ioctl src/kernel/io/drd/drd_local.c : 832
10 drd_ics_ioctl_v1 (source file cannot be determined)
11 svr_drd_ics_ioctl_v1 tnc_gen/icssvr_drd_gen.c : 436
12 icssvr_daemon_from_pool src/kernel/tnc_common/tnc_ics/ics_svr_mgmt.c : 795
> 0 stop_secondary_cpu src/kernel/arch/alpha/cpu.c : 1339
1 panic src/kernel/bsd/subr_prf.c : 1296
2 event_timeout src/kernel/arch/alpha/cpu.c : 2227
3 printf src/kernel/bsd/subr_prf.c : 981
4 panic src/kernel/bsd/subr_prf.c : 1353
5 trap src/kernel/arch/alpha/trap.c : 2273
6 _XentMM src/kernel/arch/alpha/locore.s : 2143
7 ccmn_DoSpecialCmd3 src/kernel/io/cam/pdrv3_common.c : 3415
8 ctape_ioctl src/kernel/io/cam/cam_tape.c : 7518
9 hwc_iomap_ioctl src/kernel/io/common/hwc/hwc_iomap.c : 641
10 spec_ioctl src/kernel/vfs/spec_vnops.c : 2978
11 spec_open src/kernel/vfs/spec_vnops.c : 2181
12 vn_open src/kernel/vfs/vfs_vnops.c : 878
13 copen src/kernel/vfs/vfs_syscalls.c : 3579
14 syscall src/kernel/arch/alpha/sys
> 0 boot src/kernel/arch/alpha/machdep.c : 2672
1 panic src/kernel/bsd/subr_prf.c : 1401
2 trap src/kernel/arch/alpha/trap.c : 2273
3 _XentMM src/kernel/arch/alpha/locore.s : 2143
4 ccmn_get_devinfo_scsidata3 src/kernel/io/cam/pdrv3_common.c : 4016
5 ctape_ioctl src/kernel/io/cam/cam_tape.c : 6860
6 hwc_iomap_ioctl src/kernel/io/common/hwc/hwc_iomap.c : 641
7 spec_ioctl src/kernel/vfs/spec_vnops.c : 2982
8 vn_ioctl src/kernel/vfs/vfs_vnops.c : 1738
9 ioctl_base src/kernel/bsd/sys_generic.c : 744
10 syscall src/kernel/arch/alpha/syscall_trap.c : 725
11 _Xsyscall src/kernel/arch/alpha/locore.s : 1814
> 0 stop_secondary_cpu src/kernel/arch/alpha/cpu.c : 1339
1 panic src/kernel/bsd/subr_prf.c : 1296
2 event_timeout src/kernel/arch/alpha/cpu.c : 2227
3 printf src/kernel/bsd/subr_prf.c : 981
4 panic src/kernel/bsd/subr_prf.c : 1353
5 trap src/kernel/arch/alpha/trap.c : 2273
6 _XentMM src/kernel/arch/alpha/locore.s : 2143
7 enqueue_tail src/kernel/kern/queue.c : 128
8 ccmn_send_ccb3 src/kernel/io/cam/pdrv3_common.c : 2498
9 ccmn_send_ccb_wait3 src/kernel/io/cam/pdrv3_common.c : 2576
10 ctape_generic_passthru src/kernel/io/cam/cam_tape.c : 15299
11 ctape_ioctl src/kernel/io/cam/cam_tape.c : 7681
12 hwc_iomap_ioctl src/kernel/io/common/hwc/hwc_iomap.c : 641
13 spec_ioctl src/kernel/vfs/spec_vnops.c : 2978
14 vn_ioctl src/kernel/vfs/vfs_vnops.c : 1738
15 ioctl_base src/kernel/bsd/sys_generic.c : 744
16 syscall src/kernel/arch/alpha/syscall_trap.c : 725
17 _Xsyscall src/kernel/arch/alpha/locore.s : 1814
> 0 stop_secondary_cpu src/kernel/arch/alpha/cpu.c : 1339
1 panic src/kernel/bsd/subr_prf.c : 1296
2 event_timeout src/kernel/arch/alpha/cpu.c : 2227
3 printf src/kernel/bsd/subr_prf.c : 981
4 panic src/kernel/bsd/subr_prf.c : 1353
5 trap src/kernel/arch/alpha/trap.c : 2273
6 _XentMM src/kernel/arch/alpha/locore.s : 2143
7 simple_lock src/kernel/arch/alpha/lockprim.s : 709
8 ccmn_credit_mgr src/kernel/io/cam/pdrv3_common.c : 887
9 ccmn_rem_ccb3 src/kernel/io/cam/pdrv3_common.c : 2741
10 ctape_done src/kernel/io/cam/cam_tape.c : 7591
11 xpt_callback_thread src/kernel/io/cam/xpt.c : 3229
> 0 boot src/kernel/arch/alpha/machdep.c : 2672
1 panic src/kernel/bsd/subr_prf.c : 1401
2 trap src/kernel/arch/alpha/trap.c : 2273
3 _XentMM src/kernel/arch/alpha/locore.s : 2143
4 mcs_lock src/kernel/arch/alpha/lockprim.s : 2679
5 ccmn_record_eei_status3 src/kernel/io/cam/pdrv3_common.c : 4531
6 ctape_passthru_done src/kernel/io/cam/cam_tape.c : 15675
7 xpt_callback_thread src/kernel/io/cam/xpt.c : 3229
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