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Kernel 2.6 based: October 2005 stream
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linux-2.6.16-s390-05-october2005.tar.gz
/ MD5 ... accumulated patch, recommended (2006-07-20)
linux-2.6.16-s390-05-october2005-patches.tar.gz
/ MD5 ... per-problem-patches, recommended (2006-07-20)
This patch contains the following linux kernel bug fixes:
| Description: |
cio: pathgrouping fails due to non-unique pathgroup-IDs. |
| Symptom: |
Grouping of channel paths for access to CCW devices fails under
some circumstances due to non-unique pathgroup-IDs. |
| Problem: |
The source for the CPU-ID part of the ID was incorrectly
specified on 64 bit systems. Additionally, the length of the ID
was too large due to incorrect data packing declaration. |
| Solution: |
Fix CPU-ID lowcore address and add missing packing declaration. |
| Problem-ID: |
24220 |
| Description: |
cio: unable to set DASD root device online. |
| Symptom: |
Trying to set a DASD root device online fails under some
circumstances with message 'Read configuration data returned
error -5'. |
| Problem: |
Function 'read configuration data' incorrectly aborts with -EIO
when encountering a temporary busy condition at a storage server. |
| Solution: |
Perform re-try when encountering temporary busy conditions. |
| Problem-ID: |
24232 |
| Description: |
dasd: dasd_eer returns data in wrong format. |
| Symptom: |
The dasd_eer device returns sense data in a binary record format.
Each record starts with a fixed set of data fields describing the
record, followed by a variable set of sense data bytes.
With this problem however, there were 6 additional bytes of
random data between the fixed part and the variable lenght part. |
| Problem: |
The fixed part of the record is defined as a struct in the DASD
eer code. Since this struct is part of a binary interface it
should have been declared with __attribute__ ((packed)).
As this was omitted, the compiler of the test system (SLES10 RC2)
added 6 extra bytes of padding to the struct. |
| Solution: |
Add __attribute__ ((packed)); to struct dasd_eer_header. |
| Problem-ID: |
24647 |
| Description: |
kernel: wrong accounting of process time. |
| Symptom: |
Process shows an astronomically high CPU time or a fixed
point divide exception (31 bit only). |
| Problem: |
If a machine check interrupts the asynchronous interrupt
handler between storing the asynchronous enter time and
doing the sums of the time spent in user space this
calculation will go wrong after the machine interrupt
returned. The machine check handler changes the
asynchronous enter time and the last exit time but these
values are still needed in the interrupted context. |
| Solution: |
If a machine check interrupts a CPU while it is in kernel
context do not change any of the timestamps. |
| Problem-ID: |
23351 |
| Description: |
kernel: Reported memory size is wrong. |
| Symptom: |
Reported memory size wrong or system hangs on IPL. |
| Problem: |
The wrong base register is used to read a value from data
structure. The value is used to calculate the memory size. |
| Solution: |
Use correct register. |
| Problem-ID: |
24316 |
| Description: |
kernel: Incomplete stack traces. |
| Symptom: |
Incomplete stack traces in case of bugs. |
| Problem: |
show_stack() passes a pointer to the current stack frame to show_trace().
Because of tail call optimization the pointer does not point to
the original stack frame anymore and therefore traces are
wrong. |
| Solution: |
Do not pass the pointer of the current stack frame to show_trace().
Instead let show_trace() calculate the pointer on its own. |
| Problem-ID: |
- |
| Description: |
zfcp: ERP 'deadlock' when registering a SCSI device or remote port. |
| Symptom: |
I/O stall when scsi commands fail during SCSI device or remote
port registration. |
| Problem: |
zfcp ERP waits for completion of SCSI device or remote port
registration. The registration failed and an adapter re-open is
triggered via scsi_eh. For the adapter re-open the ERP thread
of zfcp is needed but this thread is blocked. |
| Solution: |
Change adapter re-open for bus/host reset and scsi_er_timer to
dismiss all FSF requests if ERP is already pending on the adapter.
Thus the ERP thread will not block and can process further
erp_actions. |
| Problem-ID: |
23989 |
Everybody should apply this patch.
To create the complete linux kernel sources, the following
patches need to be applied in sequence:
linux-2.6.16.tar.gz (from http://www.kernel.org/pub/linux/kernel/v2.6)
+ linux-2.6.16-s390-base-october2005.diff (IBM)
+ linux-2.6.16-s390-01-october2005.diff (IBM)
+ linux-2.6.16-s390-02-october2005.diff (IBM)
+ linux-2.6.16-s390-03-october2005.diff (IBM)
+ linux-2.6.16-s390-04-october2005.diff (IBM)
+ linux-2.6.16-s390-05-october2005.diff (IBM)
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