- 15 Mar, 2010 40 commits
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Greg Kroah-Hartman authored
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Ian Campbell authored
commit 14315592 upstream. Distros generally (I looked at Debian, RHEL5 and SLES11) seem to enable CONFIG_HIGHPTE for any x86 configuration which has highmem enabled. This means that the overhead applies even to machines which have a fairly modest amount of high memory and which therefore do not really benefit from allocating PTEs in high memory but still pay the price of the additional mapping operations. Running kernbench on a 4G box I found that with CONFIG_HIGHPTE=y but no actual highptes being allocated there was a reduction in system time used from 59.737s to 55.9s. With CONFIG_HIGHPTE=y and highmem PTEs being allocated: Average Optimal load -j 4 Run (std deviation): Elapsed Time 175.396 (0.238914) User Time 515.983 (5.85019) System Time 59.737 (1.26727) Percent CPU 263.8 (71.6796) Context Switches 39989.7 (4672.64) Sleeps 42617.7 (246.307) With CONFIG_HIGHPTE=y but with no highmem PTEs being allocated: Average Optimal load -j 4 Run (std deviation): Elapsed Time 174.278 (0.831968) User Time 515.659 (6.07012) System Time 55.9 (1.07799) Percent CPU 263.8 (71.266) Context Switches 39929.6 (4485.13) Sleeps 42583.7 (373.039) This patch allows the user to control the allocation of PTEs in highmem from the command line ("userpte=nohigh") but retains the status-quo as the default. It is possible that some simple heuristic could be developed which allows auto-tuning of this option however I don't have a sufficiently large machine available to me to perform any particularly meaningful experiments. We could probably handwave up an argument for a threshold at 16G of total RAM. Assuming 768M of lowmem we have 196608 potential lowmem PTE pages. Each page can map 2M of RAM in a PAE-enabled configuration, meaning a maximum of 384G of RAM could potentially be mapped using lowmem PTEs. Even allowing generous factor of 10 to account for other required lowmem allocations, generous slop to account for page sharing (which reduces the total amount of RAM mappable by a given number of PT pages) and other innacuracies in the estimations it would seem that even a 32G machine would not have a particularly pressing need for highmem PTEs. I think 32G could be considered to be at the upper bound of what might be sensible on a 32 bit machine (although I think in practice 64G is still supported). It's seems questionable if HIGHPTE is even a win for any amount of RAM you would sensibly run a 32 bit kernel on rather than going 64 bit. Signed-off-by:
Ian Campbell <ian.campbell@citrix.com> LKML-Reference: <1266403090-20162-1-git-send-email-ian.campbell@citrix.com> Signed-off-by:
H. Peter Anvin <hpa@zytor.com> Signed-off-by:
Greg Kroah-Hartman <gregkh@suse.de>
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Thomas Gleixner authored
commit 83ab0aa0 upstream. setscheduler() saves task->sched_class outside of the rq->lock held region for a check after the setscheduler changes have become effective. That might result in checking a stale value. rtmutex_setprio() has the same problem, though it is protected by p->pi_lock against setscheduler(), but for correctness sake (and to avoid bad examples) it needs to be fixed as well. Retrieve task->sched_class inside of the rq->lock held region. Signed-off-by:
Thomas Gleixner <tglx@linutronix.de> Acked-by:
Peter Zijlstra <peterz@infradead.org> Signed-off-by:
Greg Kroah-Hartman <gregkh@suse.de>
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Suresh Siddha authored
commit 9000f05c upstream. Fix a SMT scheduler performance regression that is leading to a scenario where SMT threads in one core are completely idle while both the SMT threads in another core (on the same socket) are busy. This is caused by this commit (with the problematic code highlighted) commit bdb94aa5 Author: Peter Zijlstra <a.p.zijlstra@chello.nl> Date: Tue Sep 1 10:34:38 2009 +0200 sched: Try to deal with low capacity @@ -4203,15 +4223,18 @@ find_busiest_queue() ... for_each_cpu(i, sched_group_cpus(group)) { + unsigned long power = power_of(i); ... - wl = weighted_cpuload(i); + wl = weighted_cpuload(i) * SCHED_LOAD_SCALE; + wl /= power; - if (rq->nr_running == 1 && wl > imbalance) + if (capacity && rq->nr_running == 1 && wl > imbalance) continue; On a SMT system, power of the HT logical cpu will be 589 and the scheduler load imbalance (for scenarios like the one mentioned above) can be approximately 1024 (SCHED_LOAD_SCALE). The above change of scaling the weighted load with the power will result in "wl > imbalance" and ultimately resulting in find_busiest_queue() return NULL, causing load_balance() to think that the load is well balanced. But infact one of the tasks can be moved to the idle core for optimal performance. We don't need to use the weighted load (wl) scaled by the cpu power to compare with imabalance. In that condition, we already know there is only a single task "rq->nr_running == 1" and the comparison between imbalance, wl is to make sure that we select the correct priority thread which matches imbalance. So we really need to compare the imabalnce with the original weighted load of the cpu and not the scaled load. But in other conditions where we want the most hammered(busiest) cpu, we can use scaled load to ensure that we consider the cpu power in addition to the actual load on that cpu, so that we can move the load away from the guy that is getting most hammered with respect to the actual capacity, as compared with the rest of the cpu's in that busiest group. Fix it. Reported-by:
Ma Ling <ling.ma@intel.com> Initial-Analysis-by:
Zhang, Yanmin <yanmin_zhang@linux.intel.com> Signed-off-by:
Suresh Siddha <suresh.b.siddha@intel.com> Signed-off-by:
Peter Zijlstra <a.p.zijlstra@chello.nl> LKML-Reference: <1266023662.2808.118.camel@sbs-t61.sc.intel.com> Signed-off-by:
Thomas Gleixner <tglx@linutronix.de> Signed-off-by:
Greg Kroah-Hartman <gregkh@suse.de>
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Vaidyanathan Srinivasan authored
commit 28f53181 upstream. Fix for sched_mc_powersavigs for pre-Nehalem platforms. Child sched domain should clear SD_PREFER_SIBLING if parent will have SD_POWERSAVINGS_BALANCE because they are contradicting. Sets the flags correctly based on sched_mc_power_savings. Signed-off-by:
Vaidyanathan Srinivasan <svaidy@linux.vnet.ibm.com> Signed-off-by:
Peter Zijlstra <a.p.zijlstra@chello.nl> LKML-Reference: <20100208100555.GD2931@dirshya.in.ibm.com> Signed-off-by:
Thomas Gleixner <tglx@linutronix.de> Signed-off-by:
Greg Kroah-Hartman <gregkh@suse.de>
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Gleb Natapov authored
commit e92805ac upstream. Add CPL checking in case emulator is tricked into emulating privilege instruction from userspace. Signed-off-by:
Gleb Natapov <gleb@redhat.com> Signed-off-by:
Avi Kivity <avi@redhat.com> Signed-off-by:
Greg Kroah-Hartman <gregkh@suse.de>
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Gleb Natapov authored
commit 60a29d4e upstream. Use groups mechanism to decode 0F C7 instructions. Signed-off-by:
Gleb Natapov <gleb@redhat.com> Signed-off-by:
Avi Kivity <avi@redhat.com> Signed-off-by:
Greg Kroah-Hartman <gregkh@suse.de>
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Gleb Natapov authored
commit 8b9f4414 upstream. Inject #UD if guest attempts to do so. This is in accordance to Intel SDM. Signed-off-by:
Gleb Natapov <gleb@redhat.com> Signed-off-by:
Avi Kivity <avi@redhat.com> Signed-off-by:
Greg Kroah-Hartman <gregkh@suse.de>
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Gleb Natapov authored
commit 2db2c2eb upstream. Use groups mechanism to decode 0F BA instructions. Signed-off-by:
Gleb Natapov <gleb@redhat.com> Signed-off-by:
Avi Kivity <avi@redhat.com> Signed-off-by:
Greg Kroah-Hartman <gregkh@suse.de>
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Mikulas Patocka authored
commit a97f925a upstream. Free the dm_io structure before calling bio_endio() instead of after it, to ensure that the io_pool containing it is not referenced after it is freed. This partially fixes a problem described here https://www.redhat.com/archives/dm-devel/2010-February/msg00109.html thread 1: bio_endio(bio, io_error); /* scheduling happens */ thread 2: close the device remove the device thread 1: free_io(md, io); Thread 2, when removing the device, sees non-empty md->io_pool (because the io hasn't been freed by thread 1 yet) and may crash with BUG in mempool_free. Thread 1 may also crash, when freeing into a nonexisting mempool. To fix this we must make sure that bio_endio() is the last call and the md structure is not accessed afterwards. There is another bio_endio in process_barrier, but it is called from the thread and the thread is destroyed prior to freeing the mempools, so this call is not affected by the bug. A similar bug exists with module unloads - the module may be unloaded immediately after bio_endio - but that is more difficult to fix. Signed-off-by:
Mikulas Patocka <mpatocka@redhat.com> Signed-off-by:
Alasdair G Kergon <agk@redhat.com> Signed-off-by:
Greg Kroah-Hartman <gregkh@suse.de>
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Trond Myklebust authored
commit ebed9203 upstream. sunrpc_cache_update() will always call detail->update() from inside the detail->hash_lock, so it cannot allocate memory. Signed-off-by:
Trond Myklebust <Trond.Myklebust@netapp.com> Signed-off-by:
Greg Kroah-Hartman <gregkh@suse.de>
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James Hogan authored
commit 5a98c04d upstream. The else part of the if statement is indented but does not have braces around it. It clearly should since it uses clk_enable and clk_disable which are supposed to balance. Signed-off-by:
James Hogan <james@albanarts.com> Acked-by:
Linus Walleij <linus.walleij@stericsson.com> Acked-by:
Alessandro Zummo <a.zummo@towertech.it> Signed-off-by:
Andrew Morton <akpm@linux-foundation.org> Signed-off-by:
Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by:
Greg Kroah-Hartman <gregkh@suse.de>
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Lars-Peter Clausen authored
commit dc2ed552 upstream. Signed-off-by:
Lars-Peter Clausen <lars@metafoo.de> Cc: Ben Dooks <ben-linux@fluff.org> Cc: <linux-mmc@vger.kernel.org> Signed-off-by:
Andrew Morton <akpm@linux-foundation.org> Signed-off-by:
Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by:
Greg Kroah-Hartman <gregkh@suse.de>
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Trond Myklebust authored
commit 9fcfe0c8 upstream. This can, for instance, happen if the user specifies a link local IPv6 address. Signed-off-by:
Trond Myklebust <Trond.Myklebust@netapp.com> Signed-off-by:
Greg Kroah-Hartman <gregkh@suse.de>
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Neil Brown authored
commit ab1b18f7 upstream. The 'struct svc_deferred_req's on the xpt_deferred queue do not own a reference to the owning xprt. This is seen in svc_revisit which is where things are added to this queue. dr->xprt is set to NULL and the reference to the xprt it put. So when this list is cleaned up in svc_delete_xprt, we mustn't put the reference. Also, replace the 'for' with a 'while' which is arguably simpler and more likely to compile efficiently. Cc: Tom Tucker <tom@opengridcomputing.com> Signed-off-by:
NeilBrown <neilb@suse.de> Signed-off-by:
J. Bruce Fields <bfields@citi.umich.edu> Signed-off-by:
Greg Kroah-Hartman <gregkh@suse.de>
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Maarten Maathuis authored
commit 290e5505 upstream. - Without this change I get a general protection fault. - Also use PTR_ERR where applicable. Signed-off-by:
Maarten Maathuis <madman2003@gmail.com> Reviewed-by:
Dave Airlie <airlied@redhat.com> Acked-by:
Thomas Hellstrom <thellstrom@vmware.com> Signed-off-by:
Dave Airlie <airlied@redhat.com> Signed-off-by:
Greg Kroah-Hartman <gregkh@suse.de>
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Zhao Yakui authored
commit 6070a4a9 upstream. This IBM system has a multi-function SDVO card that reports both VGA and TV, but the system has no TV connector. The TV connector always reported as connected, which would lead to poor modesetting choices. https://bugs.freedesktop.org/show_bug.cgi?id=25787Signed-off-by:
Zhao Yakui <yakui.zhao@intel.com> Tested-by:
Vance <liangghv@sg.ibm.com> Signed-off-by:
Eric Anholt <eric@anholt.net> Signed-off-by:
Greg Kroah-Hartman <gregkh@suse.de>
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Jan Dumon authored
commit 46216e4f upstream. Enable the SD-Card interface on multiple Option 3G sticks. The unusual_devs.h entry is necessary because the device descriptor is vendor-specific. That prevents usb-storage from binding to it as an interface driver. Signed-off-by:
Jan Dumon <j.dumon@option.com> Signed-off-by:
Phil Dibowitz <phil@ipom.com> Signed-off-by:
Greg Kroah-Hartman <gregkh@suse.de>
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Alan Cox authored
commit bd07c551 upstream. As reported in http://bugzilla.kernel.org/show_bug.cgi?id=10980Signed-off-by:
Alan Cox <alan@linux.intel.com> Signed-off-by:
Greg Kroah-Hartman <gregkh@suse.de>
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Daniel Sangorrin authored
commit 46b72d78 upstream. This is a patch to ftdi_sio_ids.h and ftdi_sio.c that adds identifiers for CONTEC USB serial converter. I tested it with the device COM-1(USB)H Signed-off-by:
Daniel Sangorrin <daniel.sangorrin@gmail.com> Cc: Andreas Mohr <andi@lisas.de> Signed-off-by:
Greg Kroah-Hartman <gregkh@suse.de>
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Mitchell Solomon authored
commit 9714080d upstream. PID patch for my products Signed-off-by:
Mitchell Solomon <mitchjs@rush2112.net> Signed-off-by:
Greg Kroah-Hartman <gregkh@suse.de>
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Andreas Mohr authored
commit 65e1ec67 upstream. - add FTDI device IDs for several ELV devices and NXTCam of Lego Mindstorms NXT - add hopefully helpful new_id comment - remove less helpful "Due to many user requests for multiple ELV devices we enable them by default." comment (we simply add _all_ known devices - an enduser shouldn't have to fiddle with obscure module parameters...). - add myself to DRIVER_AUTHOR The missing NXTCam ID has been found at http://www.unixboard.de/vb3/showthread.php?t=44155 , ELV devices taken from ELV Windows .inf file. Signed-off-by:
Andreas Mohr <andi@lisas.de> Signed-off-by:
Greg Kroah-Hartman <gregkh@suse.de>
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Radek Liboska authored
commit a7787e50 upstream. added new device pid (PAPOUCH_AD4USB_PID) to ftdi_sio.h and ftdi_sio.c AD4USB measuring converter is a 4-input A/D converter which enables the user to measure to four current inputs ranging from 0(4) to 20 mA or voltage between 0 and 10 V. The measured values are then transferred to a superior system in digital form. The AD4USB communicates via USB. Powered is also via USB. datasheet in english is here: http://www.papouch.com/shop/scripts/pdf/ad4usb_en.pdfSigned-off-by:
Radek Liboska <liboska@uochb.cas.cz> Signed-off-by:
Greg Kroah-Hartman <gregkh@suse.de>
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Andreas Mohr authored
commit 4e092d11 upstream. This is a (almost) sort-only patch to sort FTDI device product ID definitions in new ftdi_sio_ids.h header. Advantage is that new device ID submissions will now have a specific (sorted) position - less future merge conflicts. Compile-tested, based on _current_ mainline git. Minor checkpatch.pl warnings were eliminated whereever it made sense, very minor text changes. Signed-off-by:
Andreas Mohr <andi@lisas.de> Signed-off-by:
Greg Kroah-Hartman <gregkh@suse.de>
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Andreas Mohr authored
commit 31844d55 upstream. This is a strictly move-only patch to relocate all FTDI device product ID definitions to their own ftdi_sio_ids.h header (following the usual *_ids.h kernel tree convention, too), thus correcting the slightly too messy appearance (crucial driver defines were stuck somewhere in the decaying middle swamp of the huge existing header). Compile-tested, based on latest mainline git. Signed-off-by:
Andreas Mohr <andi@lisas.de> Signed-off-by:
Greg Kroah-Hartman <gregkh@suse.de>
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Herbert Xu authored
commit f7410ced upstream. USB: Move hcd free_dev call into usb_disconnect I found a way to oops the kernel: 1. Open a USB device through devio. 2. Remove the hcd module in the host kernel. 3. Close the devio file descriptor. The problem is that closing the file descriptor does usb_release_dev as it is the last reference. usb_release_dev then tries to invoke the hcd free_dev function (or rather dereferencing the hcd driver struct). This causes an oops as the hcd driver has already been unloaded so the struct is gone. This patch tries to fix this by bringing the free_dev call earlier and into usb_disconnect. I have verified that repeating the above steps no longer crashes with this patch applied. Signed-off-by:
Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by:
Greg Kroah-Hartman <gregkh@suse.de>
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Alan Stern authored
commit cceffe93 upstream. This patch (as1332) removes an unneeded and annoying debugging message announcing all USB uevent constructions. Signed-off-by:
Alan Stern <stern@rowland.harvard.edu> Signed-off-by:
Greg Kroah-Hartman <gregkh@suse.de>
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Pete Zaitcev authored
commit d23356da upstream. When hardware is removed on a Stratus, the system may crash like this: ACPI: PCI interrupt for device 0000:7c:00.1 disabled Trying to free nonexistent resource <00000000a8000000-00000000afffffff> Trying to free nonexistent resource <00000000a4800000-00000000a480ffff> uhci_hcd 0000:7e:1d.0: remove, state 1 usb usb2: USB disconnect, address 1 usb 2-1: USB disconnect, address 2 Unable to handle kernel paging request at 0000000000100100 RIP: [<ffffffff88021950>] :uhci_hcd:uhci_scan_schedule+0xa2/0x89c #4 [ffff81011de17e50] uhci_scan_schedule at ffffffff88021918 #5 [ffff81011de17ed0] uhci_irq at ffffffff88023cb8 #6 [ffff81011de17f10] usb_hcd_irq at ffffffff801f1c1f #7 [ffff81011de17f20] handle_IRQ_event at ffffffff8001123b #8 [ffff81011de17f50] __do_IRQ at ffffffff800ba749 This occurs because an interrupt scans uhci->skelqh, which is being freed. We do the right thing: disable the interrupts in the device, and do not do any processing if the interrupt is shared with other source, but it's possible that another CPU gets delayed somewhere (e.g. loops) until we started freeing. The agreed-upon solution is to wait for interrupts to play out before proceeding. No other bareers are neceesary. A backport of this patch was tested on a 2.6.18 based kernel. Testing of 2.6.32-based kernels is under way, but it takes us forever (months) to turn this around. So I think it's a good patch and we should keep it. Tracked in RH bz#516851 Signed-Off-By:
Pete Zaitcev <zaitcev@redhat.com> Signed-off-by:
Greg Kroah-Hartman <gregkh@suse.de>
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Alan Stern authored
commit cd780694 upstream. This patch (as1346) changes the idProduct value for USB-3.0 root hubs from 0x0002 (which we already use for USB-2.0 root hubs) to 0x0003. Signed-off-by:
Alan Stern <stern@rowland.harvard.edu> Acked-by:
Sarah Sharp <sarah.a.sharp@linux.intel.com> Signed-off-by:
Greg Kroah-Hartman <gregkh@suse.de>
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Edward Shao authored
commit 05197921 upstream. According "5.3.6 Capability Parameters (HCCPARAMS)" of xHCI rev0.96 spec, value of xECP register indicates a relative offset, in 32-bit words, from Base to the beginning of the first extended capability. The wrong calculation will cause BIOS handoff fail (not handoff from BIOS) in some platform with BIOS USB legacy sup support. Signed-off-by:
Edward Shao <laface.tw@gmail.com> Cc: Sarah Sharp <sarah.a.sharp@linux.intel.com> Signed-off-by:
Greg Kroah-Hartman <gregkh@suse.de>
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Yinghai Lu authored
commit 18dce6ba upstream. Thomas Renninger <trenn@suse.de> reported on IBM x3330 booting a latest kernel on this machine results in: PCI: PCI BIOS revision 2.10 entry at 0xfd61c, last bus=1 PCI: Using configuration type 1 for base access bio: create slab <bio-0> at 0 ACPI: SCI (IRQ30) allocation failed ACPI Exception: AE_NOT_ACQUIRED, Unable to install System Control Interrupt handler (20090903/evevent-161) ACPI: Unable to start the ACPI Interpreter Later all kind of devices fail... and bisect it down to this commit: commit b9c61b70 x86/pci: update pirq_enable_irq() to setup io apic routing it turns out we need to set irq routing for the sci on ioapic1 early. -v2: make it work without sparseirq too. -v3: fix checkpatch.pl warning, and cc to stable Reported-by:
Thomas Renninger <trenn@suse.de> Bisected-by:
Thomas Renninger <trenn@suse.de> Tested-by:
Thomas Renninger <trenn@suse.de> Signed-off-by:
Yinghai Lu <yinghai@kernel.org> LKML-Reference: <1265793639-15071-2-git-send-email-yinghai@kernel.org> Signed-off-by:
H. Peter Anvin <hpa@zytor.com> Signed-off-by:
Greg Kroah-Hartman <gregkh@suse.de>
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Brandon Phiilps authored
commit ced5b697 upstream. Keep chip_data in create_irq_nr and destroy_irq. When two drivers are setting up MSI-X at the same time via pci_enable_msix() there is a race. See this dmesg excerpt: [ 85.170610] ixgbe 0000:02:00.1: irq 97 for MSI/MSI-X [ 85.170611] alloc irq_desc for 99 on node -1 [ 85.170613] igb 0000:08:00.1: irq 98 for MSI/MSI-X [ 85.170614] alloc kstat_irqs on node -1 [ 85.170616] alloc irq_2_iommu on node -1 [ 85.170617] alloc irq_desc for 100 on node -1 [ 85.170619] alloc kstat_irqs on node -1 [ 85.170621] alloc irq_2_iommu on node -1 [ 85.170625] ixgbe 0000:02:00.1: irq 99 for MSI/MSI-X [ 85.170626] alloc irq_desc for 101 on node -1 [ 85.170628] igb 0000:08:00.1: irq 100 for MSI/MSI-X [ 85.170630] alloc kstat_irqs on node -1 [ 85.170631] alloc irq_2_iommu on node -1 [ 85.170635] alloc irq_desc for 102 on node -1 [ 85.170636] alloc kstat_irqs on node -1 [ 85.170639] alloc irq_2_iommu on node -1 [ 85.170646] BUG: unable to handle kernel NULL pointer dereference at 0000000000000088 As you can see igb and ixgbe are both alternating on create_irq_nr() via pci_enable_msix() in their probe function. ixgbe: While looping through irq_desc_ptrs[] via create_irq_nr() ixgbe choses irq_desc_ptrs[102] and exits the loop, drops vector_lock and calls dynamic_irq_init. Then it sets irq_desc_ptrs[102]->chip_data = NULL via dynamic_irq_init(). igb: Grabs the vector_lock now and starts looping over irq_desc_ptrs[] via create_irq_nr(). It gets to irq_desc_ptrs[102] and does this: cfg_new = irq_desc_ptrs[102]->chip_data; if (cfg_new->vector != 0) continue; This hits the NULL deref. Another possible race exists via pci_disable_msix() in a driver or in the number of error paths that call free_msi_irqs(): destroy_irq() dynamic_irq_cleanup() which sets desc->chip_data = NULL ...race window... desc->chip_data = cfg; Remove the save and restore code for cfg in create_irq_nr() and destroy_irq() and take the desc->lock when checking the irq_cfg. Reported-and-analyzed-by:
Brandon Philips <bphilips@suse.de> Signed-off-by:
Yinghai Lu <yinghai@kernel.org> LKML-Reference: <1265793639-15071-3-git-send-email-yinghai@kernel.org> Signed-off-by:
Brandon Phililps <bphilips@suse.de> Signed-off-by:
H. Peter Anvin <hpa@zytor.com> Signed-off-by:
Greg Kroah-Hartman <gregkh@suse.de>
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Ian Campbell authored
commit 817a824b upstream. There's a path in the pagefault code where the kernel deliberately breaks its own locking rules by kmapping a high pte page without holding the pagetable lock (in at least page_check_address). This breaks Xen's ability to track the pinned/unpinned state of the page. There does not appear to be a viable workaround for this behaviour so simply disable HIGHPTE for all Xen guests. Signed-off-by:
Ian Campbell <ian.campbell@citrix.com> LKML-Reference: <1267204562-11844-1-git-send-email-ian.campbell@citrix.com> Cc: Jeremy Fitzhardinge <jeremy@goop.org> Cc: Ingo Molnar <mingo@elte.hu> Cc: Pasi Kärkkäinen <pasik@iki.fi> Cc: <xen-devel@lists.xensource.com> Signed-off-by:
H. Peter Anvin <hpa@zytor.com> Signed-off-by:
Greg Kroah-Hartman <gregkh@suse.de>
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Justin P. Mattock authored
commit 0a832320 upstream. On the iMac9,1 /sbin/reboot results in a black mangled screen. Adding this DMI entry gets the machine to reboot cleanly as it should. Signed-off-by:
Justin P. Mattock <justinmattock@gmail.com> LKML-Reference: <1266362249-3337-1-git-send-email-justinmattock@gmail.com> Signed-off-by:
H. Peter Anvin <hpa@zytor.com> Signed-off-by:
Ingo Molnar <mingo@elte.hu> Signed-off-by:
Greg Kroah-Hartman <gregkh@suse.de>
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Jiri Slaby authored
commit 318f6b22 upstream. Do not set current->mm->mmap to NULL in 32-bit emulation on 64-bit load_aout_binary after flush_old_exec as it would destroy already set brpm mapping with arguments. Introduced by b6a2fea3 mm: variable length argument support where the argument mapping in bprm was added. [ hpa: this is a regression from 2.6.22... time to kill a.out? ] Signed-off-by:
Jiri Slaby <jslaby@suse.cz> LKML-Reference: <1265831716-7668-1-git-send-email-jslaby@suse.cz> Cc: Ingo Molnar <mingo@elte.hu> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Ollie Wild <aaw@google.com> Cc: x86@kernel.org Signed-off-by:
H. Peter Anvin <hpa@zytor.com> Signed-off-by:
Greg Kroah-Hartman <gregkh@suse.de>
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Tao Ma authored
commit cbaee472 upstream. In ocfs2_direct_IO_get_blocks, we only need to bug out in case of we are going to write a recounted extent rec. What a silly bug introduced by me! Signed-off-by:
Tao Ma <tao.ma@oracle.com> Signed-off-by:
Joel Becker <joel.becker@oracle.com> Signed-off-by:
Greg Kroah-Hartman <gregkh@suse.de>
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Henrique de Moraes Holschuh authored
commit 08fedfc9 upstream. Studying the DSDTs of various thinkpads, it looks like bit 3 of the argument to SBDC and SWAN is not "set radio to last state on resume". Rather, it seems to be "if this bit is set, enable radio on resume, otherwise disable it on resume". So, the proper way to prepare the radios for S3 suspend is: disable radio and clear bit 3 on the SBDC/SWAN call to to resume with radio disabled, and enable radio and set bit 3 on the SBDC/SWAN call to resume with the radio enabled. Also, for persistent devices, the rfkill core does not restore state, so we really need to get the firmware to do the right thing. We don't sync the radio state on suspend, instead we trust the BIOS to not do anything weird if we never touched the radio state since boot. Time will tell if that's a wise way of doing things... Signed-off-by:
Henrique de Moraes Holschuh <hmh@hmh.eng.br> Signed-off-by:
Greg Kroah-Hartman <gregkh@suse.de>
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Henrique de Moraes Holschuh authored
commit 7f0cf712 upstream. Thadeu Lima de Souza Cascardo reports this: Brightness notification does not work until the user writes to hotkey_mask attribute. That's because the polling thread will only run if hotkey_user_mask is set and someone is reading the input device or if hotkey_driver_mask is set. In this second case, this condition is not tested after the mask is changed, because the brightness and volume drivers are started after the hotkey drivers. Fix tpacpi_hotkey_driver_mask_set() to call hotkey_poll_setup(), so that the poller kthread will be started when needed. Reported-by:
Thadeu Lima de Souza Cascardo <cascardo@holoscopio.com> Tested-by:
Thadeu Lima de Souza Cascardo <cascardo@holoscopio.com> Signed-off-by:
Henrique de Moraes Holschuh <hmh@hmh.eng.br> Cc: Andrew Morton <akpm@linux-foundation.org> Signed-off-by:
Greg Kroah-Hartman <gregkh@suse.de>
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Henrique de Moraes Holschuh authored
commit bf8b29c8 upstream. Event 0x3006 is used to help power management of the ODD in the UltraBay. The EC generates this event when the ODD eject button is pressed (even if the bay is powered down). Normally, Linux doesn't need this as we keep the SATA link powered up (which wastes power). The EC powers up the bay by itself when the ODD eject button is pressed, and the SATA PHY reports the hotplug. However, we could also power that SATA link down (and for that matter, also power down the Ultrabay) if the ODD is left idle for a while with no disk inside, and use event 0x3006 to know when we need that SATA link powered back up. For now, just stop asking for more information when event 0x3006 is seen, there is no point in pestering users about it anymore. Signed-off-by:
Henrique de Moraes Holschuh <hmh@hmh.eng.br> Signed-off-by:
Greg Kroah-Hartman <gregkh@suse.de>
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Henrique de Moraes Holschuh authored
commit 7d1894d8 upstream. We can stop pestering users for confirmation of the brightness_mode default for firmware TP-76. While at it, add a few missing comments in that quirk table. Reported-by:
Whoopie <whoopie79@gmx.net> Signed-off-by:
Henrique de Moraes Holschuh <hmh@hmh.eng.br> Signed-off-by:
Greg Kroah-Hartman <gregkh@suse.de>
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