Kernel 2.4 based: June 2003 stream

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linux-2.4.21-s390-03-june2003.tar.gz / MD5 ... accumulated patch, recommended (2003-07-25)

linux-2.4.21-s390-03-june2003-patches.tar.gz / MD5 ... per-problem-patches, recommended (2003-07-25)

These patches contain the following linux kernel bug fixes:

Description:

xpram parameter parsing.

Symptom:

The xpram driver doesn't accept hexadecimal sizes on the xpram_parts parameter with a single digit after the 0x.

Problem:

The check in xpram_int_format that determines if a number is in hexadecimal is broken.

Solution:

Fix the check for hexadecimal numbers.

Problem-ID:

3284

Description:

Use z990 path group algorithm also on 64 bit

Note:

applicable for 64-bit Linux, only

Description:

spinlock problem with unsupported ioctls in qeth

Symptom:

deadlock in ioctl of unsupported ioctl of qeth

Problem:

spinlock was not released

Solution:

relese spinlock before leaving function

Problem-ID:

3287

Description:

unloading qeth module results in a kernel oops while osasnmpd is running

Symptom:

1. osasnmpd is running
2. shut down all network interfaces related to qeth module
3. rmmod qeth causes a kernel oops

Problem:

osasnmpd has an open ioctl on /proc/qeth without incrementing qeth module usage counter

Solution:

increment the qeth module usage counter when opening the ioctl and decrement it when leaving the function and so returning to osasnmpd

Problem-ID:

3317

Description:

sysinfo doesn't return all data on 31 bit emu.

Symptom:

mem_unit info missing.

Problem:

Some data members were not copied in emu layer.

Solution:

Copy of data members added.

Problem-ID:

n/a

Note:

applicable for 64-bit Linux, only

Description:

cio: ctcs not detected; varying of network chpids broken.

Symptom:

1. ctcs are not detected if the other side of the connection is active.
2. When varying a networking chpid off and then on again via /proc/chpids, the networking interface does not recover.

Problem:

1. SNID is not supported on ctcs, the command code means something else. This leads to ctcs being detected as boxed.
2. The channel device layer cannot handle DEVSTAT_NOT_ACC.

Solution:

1. Don't do a SNID as first action during device recognition. If a SID causes timeout, consider the device boxed. Only do SNID/SPID if the device driver requests it during request_irq.
2. Only use DEVSTAT_NOT_ACC for device drivers which requested SNID/SPID. Use DEVSTAT_DEVICE_GONE for other device drivers.

Problem-ID:

3395

Description:

cio: link incident handling.

Symptom:

After receiving a link incident, Linux hangs.

Problem:

The event information stored after a link incident contains a reporting chpid; this may or may not be the chpid with the link incident.

Solution:

Check the link incident record received for the chpid with the link incident.

Problem-ID:

3398

Description:

<ccwcache>: Incorrect cache index determination

Symptom:

random kernel oops

Problem:

The incorrect comparison caused the wrong cache line to be selected for maximum size requests.

Solution:

fixed the comparison

Problem-ID:

3450

Description:

siginfo_t structure on user stack incorrect.

Symptom:

Unwinding over a rt signal frame crashes user programs.

Problem:

The kernel definition of the siginfo_t structure for s390x is 136 bytes long instead of the correct length of 128. The kernel will create a stack frame for rt signal that the unwind code can't process.

Solution:

Reduce the size of the _pad array.

Problem-ID:

3490

Note:

Description:

cannot rmmod lcs module when TR-devices are used

Symptom:

rmmod lcs does not work, when ipv6 and TR were used

Problem:

IPv6 gets some stray packets and looses track of dev->refcnt

Solution:

make lcs not give v6 packets to the stack

Problem-ID:

3491

Description:

HW checksum fix

Symptom:

HW checksumming did not work

Problem:

problem in bit usage of QDIO header

Solution:

interpret QDIO header correctly

Problem-ID:

n/a

Description:

reduce stack usage

Symptom:

symlink loops on NFS share causes oops

Problem:

stack overflow

Solution:

reduce stack usage by inlining some functions

Problem-ID:

3344

Description:

added qeth options to Configure.help

Description:

added z90crypt options to Configure.help

Everybody should apply this patch.

To create the complete linux kernel sources, the following patches need to be applied in sequence:

linux-2.4.21.tar.gz (see www.kernel.org)
+ linux-2.4.21-s390-june2003.diff (IBM)
+ linux-2.4.21-s390-01-june2003.diff (IBM)
+ linux-2.4.21-s390-02-june2003.diff (IBM)
+ linux-2.4.21-s390-03-june2003.diff (IBM)

Note: If On-demand timer is required, apply as last patch:
+ linux-2.4.21-s390-timer-june2003.diff (IBM)

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