icebp (opcode 0xf1) no longer causing a SIGTRAP, Breaking wine

[eXlin]

 icebp (opcode 0xf1) no longer causing a SIGTRAP witch is breaking some windows programs running a top of wine.
This issue exists from kernel v2.6.33+ with wine (tested 1.2-rc5, 1.1.44 and 1.1.33).

Bug can be seen when running World of warcraft 3.3.5 (newest patch) and trying to login.

There has been filed a bug to mainstream issue tracker (https://bugzilla.kernel.org/show_bug.cgi?id=16315#c2) by Alexandre.
And there is patch existing (https://bugzilla.kernel.org/attachment.cgi?id=26981).

About this Word of Warcraft/wine/kernel issue has been discussed also in http://bugs.winehq.org/show_bug.cgi?id=23323

Think fix should be applied also to kernel's in ubuntu's repository.

ProblemType: Bug
DistroRelease: Ubuntu 10.10
Package: linux-image (not installed)
Regression: Yes
Reproducible: Yes
ProcVersionSignature: Ubuntu 2.6.35-6.9~maverick1-generic 2.6.35-rc3
Uname: Linux 2.6.35-6-generic x86_64
NonfreeKernelModules: nvidia
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.23.
Architecture: amd64
ArecordDevices:
 **** List of CAPTURE Hardware Devices ****
 card 0: SB [HDA ATI SB], device 0: VT1708B Analog [VT1708B Analog]
   Subdevices: 2/2
   Subdevice #0: subdevice #0
   Subdevice #1: subdevice #1
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: henri 1628 F.... pulseaudio
CRDA: Error: [Errno 2] No such file or directory
Card0.Amixer.info:
 Card hw:0 'SB'/'HDA ATI SB at 0xf7ff4000 irq 16'
   Mixer name : 'VIA VT1708B 8-Ch'
   Components : 'HDA:1106e721,10438345,00100100'
   Controls : 35
   Simple ctrls : 19
Date: Wed Jun 30 20:13:33 2010
EcryptfsInUse: Yes
HibernationDevice: RESUME=UUID=b9e63441-48a0-4860-8067-ab0c780c3d88
InstallationMedia: Ubuntu 10.10 "Maverick Meerkat" - Alpha amd64 (20100602.2)
IwConfig:
 lo no wireless extensions.

 eth0 no wireless extensions.
MachineType: System manufacturer System Product Name
ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.35-6-generic root=UUID=6a4406e7-3a11-4a5c-86b4-5ec5c2646283 ro quiet splash
ProcEnviron:
 LANG=en_US.utf8
 SHELL=/bin/bash
RelatedPackageVersions: linux-firmware 1.37
RfKill:

SourcePackage: linux
dmi.bios.date: 12/26/2008
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 0901
dmi.board.asset.tag: To Be Filled By O.E.M.
dmi.board.name: M3A78
dmi.board.vendor: ASUSTeK Computer INC.
dmi.board.version: Rev X.0x
dmi.chassis.asset.tag: Asset-1234567890
dmi.chassis.type: 3
dmi.chassis.vendor: Chassis Manufacture
dmi.chassis.version: Chassis Version
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr0901:bd12/26/2008:svnSystemmanufacturer:pnSystemProductName:pvrSystemVersion:rvnASUSTeKComputerINC.:rnM3A78:rvrRevX.0x:cvnChassisManufacture:ct3:cvrChassisVersion:
dmi.product.name: System Product Name
dmi.product.version: System Version
dmi.sys.vendor: System manufacturer

[Maia Everett (linneris)]

I don't know if it's related to this bug (apparently the patch in question is in the Ubuntu kernel), but I have observed that WoW crashes at login with the Maverick kernel 2.6.35 (both -7 and -8) and works under the mainline PPA 2.6.35-rc5 kernel.

[Leann Ogasawara (leannogasawara)]

It appears the patch noted in the description is indeed already included in the upstream kernel as of v2.6.35-rc4. The Maverick kernel was recently rebased on upstream's 2.6.35 final kernel and uploaded, so as a result, it also contains this patch. I'm therefore marking this bug Fix Released for Maverick. Thanks.

~/ubuntu-maverick$ git show a1e80fafc9f0742a1776a0490258cb64912411b0
commit a1e80fafc9f0742a1776a0490258cb64912411b0
Author: Frederic Weisbecker <email address hidden>
Date: Wed Jun 30 15:09:06 2010 +0200

    x86: Send a SIGTRAP for user icebp traps