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* [PATCH] x86_64: Enlarge debug stack for nested kprobesbibo mao2006-07-281-1/+1
| | | | | | | | | | | | | | | | | | | | | In x86_64 platform, INT1 and INT3 trap stack is IST stack called DEBUG_STACK, when INT1/INT3 trap happens, system will switch to DEBUG_STACK by hardware. Current DEBUG_STACK size is 4K, when int1/int3 trap happens, kernel will minus current DEBUG_STACK IST value by 4k. But if int3/int1 trap is nested, it will destroy other vector's IST stack. This patch modifies this, it sets DEBUG_STACK size as 8K and allows two level of nested int1/int3 trap. Kprobe DEBUG_STACK may be nested, because kprobe handler may be probed by other kprobes. Thanks jbeulich for pointing out error in the first patch. [AK: nested kprobes are pretty dubious. Hopefully one nest will be enough. This will cost 8K per CPU (4K more than before)] Signed-off-by: bibo, mao <bibo.mao@intel.com> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] x86_64: Don't clobber r8-r11 in int 0x80 handlerAndi Kleen2006-07-281-1/+1
| | | | | | | | | | | | | | | | | | | | When int 0x80 is called from long mode r8-r11 would leak out of the kernel (or rather they would be filled with some values from the kernel stack). I don't think it's a security issue because the values come from the fixed stack frame which should be near always user registers from a previous interrupt. Still better fix it. Longer term the register save macros need to be cleaned up to avoid such mistakes in the future. Original analysis from Richard Brunner, fix by me. Cc: Richard.Brunner@amd.com Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] i386/x86-64: Add user_mode checks to profile_pc for oprofileAndi Kleen2006-07-282-2/+2
| | | | | | | | | | | | | | | | | | Fixes a obscure user space triggerable crash during oprofiling. Oprofile calls profile_pc from NMIs even when user_mode(regs) is not true and the program counter is inside the kernel lock section. This opens a race - when a user program jumps to a kernel lock address and a NMI happens before the illegal page fault exception is raised and the program has a unmapped esp or ebp then the kernel could oops. NMIs have a higher priority than exceptions so that could happen. Add user_mode checks to i386/x86-64 profile_pc to prevent that. Cc: John Levon <levon@movementarian.org> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* Merge branch 'for-linus' of git://git390.osdl.marist.edu/pub/scm/linux-2.6Linus Torvalds2006-07-283-17/+40
|\ | | | | | | | | | | | | * 'for-linus' of git://git390.osdl.marist.edu/pub/scm/linux-2.6: [S390] update default configuration [S390] duplicate ccw devices in ccwgroup. [S390] permanent subchannel busy conditions may cause I/O stall
| * [S390] update default configurationMartin Schwidefsky2006-07-271-9/+35
| | | | | | | | Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
| * [S390] duplicate ccw devices in ccwgroup.Cornelia Huck2006-07-271-7/+3
| | | | | | | | | | | | | | Fail to create a ccwgroup device if a ccw device is passed in twice. Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
| * [S390] permanent subchannel busy conditions may cause I/O stallPeter Oberparleiter2006-07-271-1/+2
| | | | | | | | | | | | | | | | | | | | | | | | In special conditions where a subchannel rejects the HALT I/O- instruction with a busy indication (cc 2), I/O may stall. I/O request termination logic retries HALT I/O indefinitely because it expects HALT I/O to alter the subchannel status which is not true when cc 2 is returned. In case of a busy indication, try CLEAR I/O instruction immediately. Signed-off-by: Peter Oberparleiter <peter.oberparleiter@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* | Merge master.kernel.org:/pub/scm/linux/kernel/git/davem/sparc-2.6Linus Torvalds2006-07-284-38/+48
|\ \ | | | | | | | | | | | | | | | | | | | | | * master.kernel.org:/pub/scm/linux/kernel/git/davem/sparc-2.6: [SUNLANCE]: fix compilation on sparc-UP [SPARC]: Defer clock_probe to fs_initcall() [SPARC64]: Fix typo in pgprot_noncached(). [SPARC64]: Fix quad-float multiply emulation.
| * | [SUNLANCE]: fix compilation on sparc-UPAlexey Dobriyan2006-07-281-4/+4
| | | | | | | | | | | | | | | Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | [SPARC]: Defer clock_probe to fs_initcall()Bob Breuer2006-07-271-32/+42
| | | | | | | | | | | | | | | | | | | | | | | | | | | From: Bob Breuer <breuerr@mc.net> That way all the of_driver bits will be ready. Signed-off-by: David S. Miller <davem@davemloft.net>
| * | [SPARC64]: Fix typo in pgprot_noncached().David S. Miller2006-07-271-1/+1
| | | | | | | | | | | | | | | | | | The sun4v code sequence was or'ing in the sun4u pte bits by mistake. Signed-off-by: David S. Miller <davem@davemloft.net>
| * | [SPARC64]: Fix quad-float multiply emulation.David S. Miller2006-07-271-1/+1
| |/ | | | | | | | | | | | | | | | | | | Something is wrong with the 3-multiply (vs. 4-multiply) optimized version of _FP_MUL_MEAT_2_*(), so just use the slower version which actually computes correct values. Noticed by Rene Rebe Signed-off-by: David S. Miller <davem@davemloft.net>
* | Merge git://oss.sgi.com:8090/nathans/xfs-rc-2.6Linus Torvalds2006-07-286-22/+39
|\ \ | | | | | | | | | | | | | | | | | | | | | * git://oss.sgi.com:8090/nathans/xfs-rc-2.6: [XFS] Ensure bulkstat from an invalid inode number gets caught always with [XFS] Fix a barrier related forced shutdown on mounts with quota enabled. [XFS] Fix remount vs no/barrier options by ensuring we clear unwanted [XFS] All xfs_disk_dquot_t values are (as the name says) disk endian.
| * | [XFS] Ensure bulkstat from an invalid inode number gets caught always withNathan Scott2006-07-281-7/+10
| | | | | | | | | | | | | | | | | | | | | | | | | | | EINVAL. SGI-PV: 953819 SGI-Modid: xfs-linux-melb:xfs-kern:26629a Signed-off-by: Nathan Scott <nathans@sgi.com>
| * | [XFS] Fix a barrier related forced shutdown on mounts with quota enabled.Nathan Scott2006-07-282-1/+8
| | | | | | | | | | | | | | | | | | | | | SGI-PV: 912426 SGI-Modid: xfs-linux-melb:xfs-kern:26622a Signed-off-by: Nathan Scott <nathans@sgi.com>
| * | [XFS] Fix remount vs no/barrier options by ensuring we clear unwantedNathan Scott2006-07-282-8/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | flags from iclog buffers before submitting them for writing. SGI-PV: 954772 SGI-Modid: xfs-linux-melb:xfs-kern:26605a Signed-off-by: Nathan Scott <nathans@sgi.com>
| * | [XFS] All xfs_disk_dquot_t values are (as the name says) disk endian.Christoph Hellwig2006-07-281-6/+13
| |/ | | | | | | | | | | | | | | | | | | Before putting them into struct statfs they should be endian-swapped. SGI-PV: 954580 SGI-Modid: xfs-linux-melb:xfs-kern:26550a Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Nathan Scott <nathans@sgi.com>
* | Merge branch 'for-linus' of git://brick.kernel.dk/data/git/linux-2.6-blockLinus Torvalds2006-07-286-10/+16
|\ \ | | | | | | | | | | | | | | | | | | | | | * 'for-linus' of git://brick.kernel.dk/data/git/linux-2.6-block: [PATCH] scsi: kill overeager "not-ready" messages [PATCH] it821x: fix ide dma setup bug [PATCH] ide: if the id fields looks screwy, disable DMA [PATCH] ide: option to disable cache flushes for buggy drives
| * | [PATCH] scsi: kill overeager "not-ready" messagesJens Axboe2006-07-281-4/+1
| | | | | | | | | | | | | | | | | | | | | | | | HAL and friends have a tendency to trigger this one all the time. It's not really interesting, so kill it. The vendor kernels all do anyways. Signed-off-by: Jens Axboe <axboe@suse.de>
| * | [PATCH] it821x: fix ide dma setup bugJens Axboe2006-07-281-3/+8
| | | | | | | | | | | | | | | | | | Only enable dma for a valid speed setting. Signed-off-by: Jens Axboe <axboe@suse.de>
| * | [PATCH] ide: if the id fields looks screwy, disable DMAJens Axboe2006-07-281-1/+1
| | | | | | | | | | | | | | | | | | | | | It's the safer choice. Originally due to a bug in itx821x, but a generally sound thing to do. Signed-off-by: Jens Axboe <axboe@suse.de>
| * | [PATCH] ide: option to disable cache flushes for buggy drivesJens Axboe2006-07-283-2/+6
| |/ | | | | | | | | | | | | | | Some drives claim they support cache flushing, but get seriously confused if you try. Add this option to be able to boot with barriers enabled by default. Signed-off-by: Jens Axboe <axboe@suse.de>
* | [PATCH] i386: switch_to(): misplaced parenthesesChuck Ebbert2006-07-281-2/+2
|/ | | | | | | | | Recent changes in i386 __switch_to() have a misplaced closing parenthesis causing an unlikely() to terminate early. Signed-off-by: Chuck Ebbert <76306.1226@compuserve.com> Acked-by: Steven Rostedt <rostedt@goodmis.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] fix compile regression for a few scsi driversChristoph Hellwig2006-07-262-12/+6
| | | | | | | | | | | | | | | | | | | | | This fixes three drivers to compile again after my patch that removes the data_cmnd member from struct scsi_cmnd. The fas216 change is trivial, it should have been using ->cmnd all the time. NCR53C9 (which seem to be mostly duplicate driver with esp.c!) is doing something odd, it should only have looked at ->cmnd before not the saved copy that is kept for the error handlers sake. Note that it really should deal with the sync setting themselves but use the generic domain validation code that get this right - but that's for later let's push this simple compile fix for now. And sorry for the late fix for this, I have been busy with OLS and associated activities last week. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* Merge master.kernel.org:/pub/scm/linux/kernel/git/davem/sparc-2.6Linus Torvalds2006-07-263-9/+8
|\ | | | | | | | | | | | | * master.kernel.org:/pub/scm/linux/kernel/git/davem/sparc-2.6: [SCSI] esp: Fix build. [SPARC]: Fix SA_STATIC_ALLOC value. [SPARC64]: Explicitly print return PC when the kernel fault PC is bogus.
| * [SCSI] esp: Fix build.David S. Miller2006-07-241-8/+4
| | | | | | | | | | | | | | | | The data_cmd[] member got deleted, so do not use it any more. Scsi commands do not have their ->cmd[] overwritten temporary to probe for status after an error before retrying. Signed-off-by: David S. Miller <davem@davemloft.net>
| * [SPARC]: Fix SA_STATIC_ALLOC value.David S. Miller2006-07-241-1/+1
| | | | | | | | | | | | | | It alises IRQF_SHARED which causes all kinds of problems. Signed-off-by: David S. Miller <davem@davemloft.net>
| * [SPARC64]: Explicitly print return PC when the kernel fault PC is bogus.David S. Miller2006-07-241-0/+3
| | | | | | | | | | | | | | That way we'll have at least some debugging info even if the stack dump explodes. Signed-off-by: David S. Miller <davem@davemloft.net>
* | Merge master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6Linus Torvalds2006-07-2617-51/+167
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6: [IPV4/IPV6]: Setting 0 for unused port field in RAW IP recvmsg(). [IPV4] ipmr: ip multicast route bug fix. [TG3]: Update version and reldate [TG3]: Handle tg3_init_rings() failures [TG3]: Add tg3_restart_hw() [IPV4]: Clear the whole IPCB, this clears also IPCB(skb)->flags. [IPV6]: Clean skb cb on IPv6 input. [NETFILTER]: Demote xt_sctp to EXPERIMENTAL [NETFILTER]: bridge netfilter: add deferred output hooks to feature-removal-schedule [NETFILTER]: xt_pkttype: fix mismatches on locally generated packets [NETFILTER]: SNMP NAT: fix byteorder confusion [NETFILTER]: conntrack: fix SYSCTL=n compile [NETFILTER]: nf_queue: handle NF_STOP and unknown verdicts in nf_reinject [NETFILTER]: H.323 helper: fix possible NULL-ptr dereference
| * | [IPV4/IPV6]: Setting 0 for unused port field in RAW IP recvmsg().Tetsuo Handa2006-07-252-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | From: Tetsuo Handa from-linux-kernel@i-love.sakura.ne.jp The recvmsg() for raw socket seems to return random u16 value from the kernel stack memory since port field is not initialized. But I'm not sure this patch is correct. Does raw socket return any information stored in port field? [ BSD defines RAW IP recvmsg to return a sin_port value of zero. This is described in Steven's TCP/IP Illustrated Volume 2 on page 1055, which is discussing the BSD rip_input() implementation. ] Acked-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | [IPV4] ipmr: ip multicast route bug fix.Alexey Kuznetsov2006-07-251-6/+13
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | IP multicast route code was reusing an skb which causes use after free and double free. From: Alexey Kuznetsov <kuznet@ms2.inr.ac.ru> Note, it is real skb_clone(), not alloc_skb(). Equeued skb contains the whole half-prepared netlink message plus room for the rest. It could be also skb_copy(), if we want to be puristic about mangling cloned data, but original copy is really not going to be used. Acked-by: Stephen Hemminger <shemminger@osdl.org> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | [TG3]: Update version and reldateMichael Chan2006-07-251-2/+2
| | | | | | | | | | | | | | | | | | | | | Update version to 3.63. Signed-off-by: Michael Chan <mchan@broadcom.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | [TG3]: Handle tg3_init_rings() failuresMichael Chan2006-07-251-5/+27
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Handle dev_alloc_skb() failures when initializing the RX rings. Without proper handling, the driver will crash when using a partial ring. Thanks to Stephane Doyon <sdoyon@max-t.com> for reporting the bug and providing the initial patch. Howie Xu <howie@vmware.com> also reported the same issue. Signed-off-by: Michael Chan <mchan@broadcom.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | [TG3]: Add tg3_restart_hw()Michael Chan2006-07-251-22/+58
| | | | | | | | | | | | | | | | | | | | | | | | Add tg3_restart_hw() to handle failures when re-initializing the device. Signed-off-by: Michael Chan <mchan@broadcom.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | [IPV4]: Clear the whole IPCB, this clears also IPCB(skb)->flags.Guillaume Chazarain2006-07-241-1/+1
| | | | | | | | | | | | | | | Signed-off-by: Guillaume Chazarain <guichaz@yahoo.fr> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | [IPV6]: Clean skb cb on IPv6 input.Guillaume Chazarain2006-07-241-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | Clear the accumulated junk in IP6CB when starting to handle an IPV6 packet. Signed-off-by: Guillaume Chazarain <guichaz@yahoo.fr> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | [NETFILTER]: Demote xt_sctp to EXPERIMENTALPatrick McHardy2006-07-241-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | After the recent problems with all the SCTP stuff it seems reasonable to mark this as experimental. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | [NETFILTER]: bridge netfilter: add deferred output hooks to ↵Patrick McHardy2006-07-244-0/+38
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | feature-removal-schedule Add bridge netfilter deferred output hooks to feature-removal-schedule and disable them by default. Until their removal they will be activated by the physdev match when needed. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | [NETFILTER]: xt_pkttype: fix mismatches on locally generated packetsPhil Oester2006-07-241-1/+11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Locally generated broadcast and multicast packets have pkttype set to PACKET_LOOPBACK instead of PACKET_BROADCAST or PACKET_MULTICAST. This causes the pkttype match to fail to match packets of either type. The below patch remedies this by using the daddr as a hint as to broadcast|multicast. While not pretty, this seems like the only way to solve the problem short of just noting this as a limitation of the match. This resolves netfilter bugzilla #484 Signed-off-by: Phil Oester <kernel@linuxace.com> Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | [NETFILTER]: SNMP NAT: fix byteorder confusionPatrick McHardy2006-07-241-2/+2
| | | | | | | | | | | | | | | Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | [NETFILTER]: conntrack: fix SYSCTL=n compileAdrian Bunk2006-07-242-4/+4
| | | | | | | | | | | | | | | | | | Signed-off-by: Adrian Bunk <bunk@stusta.de> Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | [NETFILTER]: nf_queue: handle NF_STOP and unknown verdicts in nf_reinjectPatrick McHardy2006-07-241-5/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | In case of an unknown verdict or NF_STOP the packet leaks. Unknown verdicts can happen when userspace is buggy. Reinject the packet in case of NF_STOP, drop on unknown verdicts. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | [NETFILTER]: H.323 helper: fix possible NULL-ptr dereferencePatrick McHardy2006-07-241-1/+1
| |/ | | | | | | | | | | | | | | | | | | | | An RCF message containing a timeout results in a NULL-ptr dereference if no RRQ has been seen before. Noticed by the "SATURN tool", reported by Thomas Dillig <tdillig@stanford.edu> and Isil Dillig <isil@stanford.edu>. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
* | [PATCH] Reorganize the cpufreq cpu hotplug locking to not be totally bizareArjan van de Ven2006-07-265-29/+23
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The patch below moves the cpu hotplugging higher up in the cpufreq layering; this is needed to avoid recursive taking of the cpu hotplug lock and to otherwise detangle the mess. The new rules are: 1. you must do lock_cpu_hotplug() around the following functions: __cpufreq_driver_target __cpufreq_governor (for CPUFREQ_GOV_LIMITS operation only) __cpufreq_set_policy 2. governer methods (.governer) must NOT take the lock_cpu_hotplug() lock in any way; they are called with the lock taken already 3. if your governer spawns a thread that does things, like calling __cpufreq_driver_target, your thread must honor rule #1. 4. the policy lock and other cpufreq internal locks nest within the lock_cpu_hotplug() lock. I'm not entirely happy about how the __cpufreq_governor rule ended up (conditional locking rule depending on the argument) but basically all callers pass this as a constant so it's not too horrible. The patch also removes the cpufreq_governor() function since during the locking audit it turned out to be entirely unused (so no need to fix it) The patch works on my testbox, but it could use more testing (otoh... it can't be much worse than the current code) Signed-off-by: Arjan van de Ven <arjan@linux.intel.com> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | [PATCH] cfq-iosched: don't use a hard jiffies value, translate from msecsJens Axboe2006-07-251-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | The CIC_SEEKY() test really wants to use the minimum of either: - 2 msecs (not jiffies) - or, the pending slice time So code it like that. Signed-off-by: Jens Axboe <axboe@suse.de>
* | [PATCH] blktrace: fix read-ahead bitMilton Miller2006-07-251-1/+1
| | | | | | | | | | | | It should be toggling the same bit on and off, fix it up. Signed-off-by: Jens Axboe <axboe@suse.de>
* | [PATCH] cciss: fix stall with softirq handling and CFQJens Axboe2006-07-251-41/+45
|/ | | | | | | | | We need to postpone the queue startup until after the softirq handler has actually finished some requests, otherwise we could be racing with cciss_softirq_done() and not actually restart the queue handling. Signed-off-by: Jens Axboe <axboe@suse.de>
* [NET]: Correct dev_alloc_skb kerneldocChristoph Hellwig2006-07-241-2/+2
| | | | | | | | dev_alloc_skb is designated for RX descriptors, not TX. (Some drivers use it for the latter anyway, but that's a different story) Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: David S. Miller <davem@davemloft.net>
* [NET]: Remove CONFIG_HAVE_ARCH_DEV_ALLOC_SKBChristoph Hellwig2006-07-241-4/+0
| | | | | | | | | | skbuff.h has an #ifndef CONFIG_HAVE_ARCH_DEV_ALLOC_SKB to allow architectures to reimplement __dev_alloc_skb. It's not set on any architecture and now that we have an architecture-overrideable NET_SKB_PAD there is not point at all to have one either. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: David S. Miller <davem@davemloft.net>
* [VLAN]: Fix link state propagationStefan Rompf2006-07-241-5/+3
| | | | | | | | | | When the queue of the underlying device is stopped at initialization time or the device is marked "not present", the state will be propagated to the vlan device and never change. Based on an analysis by Patrick McHardy. Signed-off-by: Stefan Rompf <stefan@loplof.de> ACKed-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
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