- 11 Feb, 2016 30 commits
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Rob Clark authored
commit 96c5d076 upstream. Signed-off-by:
Rob Clark <robdclark@gmail.com> Reviewed-by: Thomas Hellstrom <thellstrom@vmware.com>. Signed-off-by:
Dave Airlie <airlied@redhat.com> Signed-off-by:
Kamal Mostafa <kamal@canonical.com>
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Takashi Iwai authored
commit 7ee96216 upstream. ALSA dummy driver can switch the timer backend between system timer and hrtimer via its hrtimer module option. This can be also switched dynamically via sysfs, but it may lead to a memory corruption when switching is done while a PCM stream is running; the stream instance for the newly switched timer method tries to access the memory that was allocated by another timer method although the sizes differ. As the simplest fix, this patch just disables the switch via sysfs by dropping the writable bit. BugLink: http://lkml.kernel.org/r/CACT4Y+ZGEeEBntHW5WHn2GoeE0G_kRrCmUh6=dWyy-wfzvuJLg@mail.gmail.comReported-by:
Dmitry Vyukov <dvyukov@google.com> Signed-off-by:
Takashi Iwai <tiwai@suse.de> Signed-off-by:
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Jann Horn authored
commit 103502a3 upstream. Before this patch, a process with some permissive seccomp filter that was applied by root without NO_NEW_PRIVS was able to add more filters to itself without setting NO_NEW_PRIVS by setting the new filter from a throwaway thread with NO_NEW_PRIVS. Signed-off-by:
Jann Horn <jann@thejh.net> Signed-off-by:
Kees Cook <keescook@chromium.org> Signed-off-by:
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Milo Kim authored
commit 49f34134 upstream. Atmel AIC has common structure for SMR (Source Mode Register). bit[6:5] Interrupt source type bit[2:0] Priority level Other bits are unused. To update new priority value, bit[2:0] should be cleared first and then new priority level can be written. However, aic_common_set_priority() helper clears source type bits instead of priority bits. This patch fixes wrong mask bit operation. Fixes: b1479ebb "irqchip: atmel-aic: Add atmel AIC/AIC5 drivers" Signed-off-by:
Milo Kim <milo.kim@ti.com> Acked-by:
Boris Brezillon <boris.brezillon@free-electrons.com> Cc: Jason Cooper <jason@lakedaemon.net> Cc: Marc Zyngier <marc.zyngier@arm.com> Cc: Ludovic Desroches <ludovic.desroches@atmel.com> Cc: Nicholas Ferre <nicolas.ferre@atmel.com> Link: http://lkml.kernel.org/r/1452669592-3401-2-git-send-email-milo.kim@ti.comSigned-off-by:
Thomas Gleixner <tglx@linutronix.de> Signed-off-by:
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Peter Hurley authored
commit f4f9edcf upstream. As the function documentation for tty_ldisc_ref_wait() notes, it is only callable from a tty file_operations routine; otherwise there is no guarantee the ref won't be NULL. The key difference with the VT's paste_selection() is that is an ioctl, where __speakup_paste_selection() is completely async kworker, kicked off from interrupt context. Fixes: 28a821c3 ("Staging: speakup: Update __speakup_paste_selection() tty (ab)usage to match vt") Signed-off-by:
Peter Hurley <peter@hurleysoftware.com> Signed-off-by:
Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by:
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Peter Hurley authored
commit 6d27a63c upstream. Although n_tty_check_unthrottle() has a valid ldisc reference (since the tty core gets the ldisc ref in tty_read() before calling the line discipline read() method), it does not have a valid ldisc reference to the "other" pty of a pty pair. Since getting an ldisc reference for tty->link essentially open-codes tty_wakeup(), just replace with the equivalent tty_wakeup(). Signed-off-by:
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Peter Hurley authored
commit 5c17c861 upstream. ioctl(TIOCGETD) retrieves the line discipline id directly from the ldisc because the line discipline id (c_line) in termios is untrustworthy; userspace may have set termios via ioctl(TCSETS*) without actually changing the line discipline via ioctl(TIOCSETD). However, directly accessing the current ldisc via tty->ldisc is unsafe; the ldisc ptr dereferenced may be stale if the line discipline is changing via ioctl(TIOCSETD) or hangup. Wait for the line discipline reference (just like read() or write()) to retrieve the "current" line discipline id. Signed-off-by:
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Alan Stern authored
commit 13b43891 upstream. Runtime suspend during driver probe and removal can cause problems. The driver's runtime_suspend or runtime_resume callbacks may invoked before the driver has finished binding to the device or after the driver has unbound from the device. This problem shows up with the sd and sr drivers, and can cause disk or CD/DVD drives to become unusable as a result. The fix is simple. The drivers store a pointer to the scsi_disk or scsi_cd structure as their private device data when probing is finished, so we simply have to be sure to clear the private data during removal and test it during runtime suspend/resume. This fixes <https://bugs.debian.org/801925>. Signed-off-by:
Alan Stern <stern@rowland.harvard.edu> Reported-by:
Paul Menzel <paul.menzel@giantmonkey.de> Reported-by:
Erich Schubert <erich@debian.org> Reported-by:
Alexandre Rossi <alexandre.rossi@gmail.com> Tested-by:
James Bottomley <James.Bottomley@HansenPartnership.com> Signed-off-by:
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Gavin Shan authored
commit 7e56f627 upstream. In eeh_pe_loc_get(), the PE location code is retrieved from the "ibm,loc-code" property of the device node for the bridge of the PE's primary bus. It's not correct because the property indicates the parent PE's location code. This reads the correct PE location code from "ibm,io-base-loc-code" or "ibm,slot-location-code" property of PE parent bus's device node. Fixes: 357b2f3d ("powerpc/eeh: Dump PE location code") Signed-off-by:
Gavin Shan <gwshan@linux.vnet.ibm.com> Tested-by:
Russell Currey <ruscur@russell.cc> Signed-off-by:
Michael Ellerman <mpe@ellerman.id.au> Signed-off-by:
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Jan Beulich authored
commit 3625c2c2 upstream. For PAE kernels "unsigned long" is not suitable to hold page protection flags, since _PAGE_NX doesn't fit there. This is the reason for quite a few W+X pages getting reported as insecure during boot (observed namely for the entire initrd range). Fixes: 281d4078 ("x86: Make page cache mode a real type") Signed-off-by:
Jan Beulich <jbeulich@suse.com> Reviewed-by:
Juergen Gross <JGross@suse.com> Link: http://lkml.kernel.org/r/56A7635602000078000CAFF1@prv-mh.provo.novell.comSigned-off-by:
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Mika Penttilä authored
commit 57adec86 upstream. Calling apply_to_page_range with an empty range results in a BUG_ON from the core code. This can be triggered by trying to load the st_drv module with CONFIG_DEBUG_SET_MODULE_RONX enabled: kernel BUG at mm/memory.c:1874! Internal error: Oops - BUG: 0 [#1] PREEMPT SMP Modules linked in: CPU: 3 PID: 1764 Comm: insmod Not tainted 4.5.0-rc1+ #2 Hardware name: ARM Juno development board (r0) (DT) task: ffffffc9763b8000 ti: ffffffc975af8000 task.ti: ffffffc975af8000 PC is at apply_to_page_range+0x2cc/0x2d0 LR is at change_memory_common+0x80/0x108 This patch fixes the issue by making change_memory_common (called by the set_memory_* functions) a NOP when numpages == 0, therefore avoiding the erroneous call to apply_to_page_range and bringing us into line with x86 and s390. Reviewed-by:
Laura Abbott <labbott@redhat.com> Acked-by:
David Rientjes <rientjes@google.com> Signed-off-by:
Mika Penttilä <mika.penttila@nextfour.com> Signed-off-by:
Will Deacon <will.deacon@arm.com> Signed-off-by:
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dann frazier authored
commit 67dfa175 upstream. GCC6 (and Linaro's 2015.12 snapshot of GCC5) has a new default that uses adrp/ldr or adrp/add to address literal pools. When CONFIG_ARM64_ERRATUM_843419 is enabled, modules built with this toolchain fail to load: module libahci: unsupported RELA relocation: 275 This patch fixes the problem by passing '-mpc-relative-literal-loads' to the compiler. Fixes: df057cc7 ("arm64: errata: add module build workaround for erratum #843419") BugLink: http://bugs.launchpad.net/bugs/1533009Acked-by:
Ard Biesheuvel <ard.biesheuvel@linaro.org> Suggested-by:
Christophe Lyon <christophe.lyon@linaro.org> Signed-off-by:
Dann Frazier <dann.frazier@canonical.com> Signed-off-by:
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Lucas Tanure authored
commit 07905298 upstream. The return type "unsigned int" was used by the get_formation_index function despite of the aspect that it will eventually return a negative error code. So, change to signed int and get index by reference in the parameters. Done with the help of Coccinelle. [Fix the missing braces suggested by Julia Lawall -- tiwai] Signed-off-by:
Lucas Tanure <tanure@linux.com> Reviewed-by:
Takashi Sakamoto <o-takashi@sakamocchi.jp> Tested-by:
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Guillaume Fougnies authored
commit 5a4ff9ec upstream. TEAC UD-501/UD-503/NT-503 fail to switch properly between different rate/format. Similar to 'Playback Design', this patch corrects the invalid clock source error for TEAC products and avoids complete freeze of the usb interface of 503 series. Signed-off-by:
Guillaume Fougnies <guillaume@eulerian.com> Signed-off-by:
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Takashi Iwai authored
commit 462b3f16 upstream. Some architectures like PowerPC can handle the maximum struct size in an ioctl only up to 13 bits, and struct snd_compr_codec_caps used by SNDRV_COMPRESS_GET_CODEC_CAPS ioctl overflows this limit. This problem was revealed recently by a powerpc change, as it's now treated as a fatal build error. This patch is a stop-gap for that: for architectures with less than 14 bit ioctl struct size, get rid of the handling of the relevant ioctl. We should provide an alternative equivalent ioctl code later, but for now just paper over it. Luckily, the compress API hasn't been used on such architectures, so the impact must be effectively zero. Reviewed-by:
Mark Brown <broonie@kernel.org> Acked-by:
Sudip Mukherjee <sudipm.mukherjee@gmail.com> Signed-off-by:
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John Ernberg authored
commit 4152b387 upstream. In certain kernel configurations where the cdc_ether and option drivers are compiled as modules there can occur a race condition in enumeration. This causes the option driver to enumerate the ethernet(wwan) interface as usb-serial interfaces. usb-devices output for the modem: T: Bus=01 Lev=01 Prnt=01 Port=00 Cnt=01 Dev#= 5 Spd=480 MxCh= 0 D: Ver= 2.00 Cls=ef(misc ) Sub=02 Prot=01 MxPS=64 #Cfgs= 1 P: Vendor=1e2d ProdID=0055 Rev=00.00 S: Manufacturer=Cinterion S: Product=AHx C: #Ifs= 6 Cfg#= 1 Atr=e0 MxPwr=10mA I: If#= 0 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=ff Prot=ff Driver=option I: If#= 1 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=ff Prot=ff Driver=option I: If#= 2 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=ff Prot=ff Driver=option I: If#= 3 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=ff Prot=ff Driver=option I: If#= 4 Alt= 0 #EPs= 1 Cls=02(commc) Sub=06 Prot=00 Driver=cdc_ether I: If#= 5 Alt= 1 #EPs= 2 Cls=0a(data ) Sub=00 Prot=00 Driver=cdc_ether Signed-off-by:
John Ernberg <john.ernberg@actia.se> Fixes: 1941138e ("USB: added support for Cinterion's products...") Signed-off-by:
Johan Hovold <johan@kernel.org> Signed-off-by:
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Lorenzo Pieralisi authored
commit f436b2ac upstream. The Performance Monitors extension is an optional feature of the AArch64 architecture, therefore, in order to access Performance Monitors registers safely, the kernel should detect the architected PMU unit presence through the ID_AA64DFR0_EL1 register PMUVer field before accessing them. This patch implements a guard by reading the ID_AA64DFR0_EL1 register PMUVer field to detect the architected PMU presence and prevent accessing PMU system registers if the Performance Monitors extension is not implemented in the core. Cc: Peter Maydell <peter.maydell@linaro.org> Cc: Mark Rutland <mark.rutland@arm.com> Fixes: 60792ad3 ("arm64: kernel: enforce pmuserenr_el0 initialization and restore") Signed-off-by:
Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Reported-by:
Guenter Roeck <linux@roeck-us.net> Tested-by:
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Greg Kroah-Hartman authored
commit e03cdf22 upstream. Harald Linden reports that the ftdi_sio driver works properly for the Yaesu SCU-18 cable if the device ids are added to the driver. So let's add them. Reported-by:
Harald Linden <harald.linden@7183.org> Signed-off-by:
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Takashi Iwai authored
commit da10816e upstream. ALSA OSS sequencer spews a kernel error message ("ALSA: seq_oss: too many applications") when user-space tries to open more than the limit. This means that it can easily fill the log buffer. Since it's merely a normal error, it's safe to suppress it via pr_debug() instead. Signed-off-by:
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Takashi Iwai authored
commit 59915133 upstream. ALSA sequencer OSS emulation code has a sanity check for currently opened devices, but there is a thinko there, eventually it spews warnings and skips the operation wrongly like: WARNING: CPU: 1 PID: 7573 at sound/core/seq/oss/seq_oss_synth.c:311 Fix this off-by-one error. Reported-by:
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Daniele Palmas authored
commit ff4e2494 upstream. This patch adds support for two PIDs of LE922. Signed-off-by:
Daniele Palmas <dnlplm@gmail.com> Signed-off-by:
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Vladis Dronov authored
commit cb323213 upstream. The visor driver crashes in clie_5_attach() when a specially crafted USB device without bulk-out endpoint is detected. This fix adds a check that the device has proper configuration expected by the driver. Reported-by:
Ralf Spenneberg <ralf@spenneberg.net> Signed-off-by:
Vladis Dronov <vdronov@redhat.com> Fixes: cfb8da8f ("USB: visor: fix initialisation of UX50/TH55 devices") Signed-off-by:
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Johan Hovold authored
commit cac9b50b upstream. Fix null-pointer dereference at probe should a (malicious) Treo device lack the expected endpoints. Specifically, the Treo port-setup hack was dereferencing the bulk-in and interrupt-in urbs without first making sure they had been allocated by core. Fixes: 1da177e4 ("Linux-2.6.12-rc2") Signed-off-by:
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Peter Dedecker authored
commit f487c54d upstream. Added the USB serial console device ID for IAI Corp. RCB-CV-USB USB to RS485 adaptor. Signed-off-by:
Peter Dedecker <peter.dedecker@hotmail.com> Signed-off-by:
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Du, Changbin authored
commit d8f00cd6 upstream. In function usb_reset_and_verify_device, the old BOS descriptor may still be used before allocating a new one. (usb_unlocked_disable_lpm function uses it under the situation that it fails to disable lpm.) So we cannot set the udev->bos to NULL before that, just keep what it was. It will be overwrite when allocating a new one. Crash log: BUG: unable to handle kernel NULL pointer dereference at 0000000000000010 IP: [<ffffffff8171f98d>] usb_enable_link_state+0x2d/0x2f0 Call Trace: [<ffffffff8171ed5b>] ? usb_set_lpm_timeout+0x12b/0x140 [<ffffffff8171fcd1>] usb_enable_lpm+0x81/0xa0 [<ffffffff8171fdd8>] usb_disable_lpm+0xa8/0xc0 [<ffffffff8171fe1c>] usb_unlocked_disable_lpm+0x2c/0x50 [<ffffffff81723933>] usb_reset_and_verify_device+0xc3/0x710 [<ffffffff8172c4ed>] ? usb_sg_wait+0x13d/0x190 [<ffffffff81724743>] usb_reset_device+0x133/0x280 [<ffffffff8179ccd1>] usb_stor_port_reset+0x61/0x70 [<ffffffff8179cd68>] usb_stor_invoke_transport+0x88/0x520 Signed-off-by:
Du, Changbin <changbin.du@intel.com> Signed-off-by:
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Oliver Neukum authored
commit e912e685 upstream. This phone needs to be handled by a specialised firmware tool and is reported to crash irrevocably if cdc-acm takes it. Signed-off-by:
Oliver Neukum <oneukum@suse.com> Signed-off-by:
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Lu Baolu authored
commit ffdb1e36 upstream. For Intel 7260 modem, it is needed for host side to send zero packet if the BULK OUT size is equal to USB endpoint max packet length. Otherwise, modem side may still wait for more data and cannot give response to host side. Signed-off-by:
Konrad Leszczynski <konrad.leszczynski@intel.com> Signed-off-by:
Lu Baolu <baolu.lu@linux.intel.com> Signed-off-by:
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Lu Baolu authored
commit 19454462 upstream. In current acm driver, the bulk-in callback function ignores the URBs unlinked in usb core. This causes unexpected data loss in some cases. For example, runtime suspend entry will unlinked all urbs and set urb->status to -ENOENT even those urbs might have data not processed yet. Hence, data loss occurs. This patch lets bulk-in callback function handle unlinked urbs to avoid data loss. Signed-off-by:
Tang Jian Qiang <jianqiang.tang@intel.com> Signed-off-by:
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Insu Yun authored
commit 2c3033a0 upstream. In acpiphp_enable_slot(), there is a missing unlock path when error occurred. It needs to be unlocked before returning an error. Signed-off-by:
Insu Yun <wuninsu@gmail.com> Signed-off-by:
Rafael J. Wysocki <rafael.j.wysocki@intel.com> Signed-off-by:
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Hans de Goede authored
commit b186b4dc upstream. The quirk to get "acpi_backlight=vendor" behavior by default on the Dell Inspiron 5737 was added before we started doing "acpi_backlight=native" by default on Win8 ready machines. Since we now avoid using acpi-video as backlight driver on these machines by default (using the native driver instead) we no longer need this quirk. Moreover the vendor driver does not work after a suspend/resume where as the native driver does. This reverts commit 08a56226 (ACPI / video: Add Dell Inspiron 5737 to the blacklist). Link: https://bugzilla.kernel.org/show_bug.cgi?id=111061 Reported-and-tested-by: erusan@gmail.com Signed-off-by:
Hans de Goede <hdegoede@redhat.com> Signed-off-by:
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- 09 Feb, 2016 4 commits
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Thomas Gleixner authored
commit e23b257c upstream. setup_ioapic_dest() calls irqchip->irq_set_affinity() completely unprotected. That's wrong in several aspects: - it opens a race window where irq_set_affinity() can be interrupted and the irq chip left in unconsistent state. - it triggers a lockdep splat when we fix the vector race for 4.3+ because vector lock is taken with interrupts enabled. The proper calling convention is irq descriptor lock held and interrupts disabled. Reported-and-tested-by:
Borislav Petkov <bp@alien8.de> Signed-off-by:
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Greg Kurz authored
commit b4d7f161 upstream. The get and set operations got exchanged by mistake when moving the code from book3s.c to powerpc.c. Fixes: 3840edc8Signed-off-by:
Greg Kurz <gkurz@linux.vnet.ibm.com> Signed-off-by:
Paul Mackerras <paulus@samba.org> Signed-off-by:
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Thomas Huth authored
commit 760a7364 upstream. In the old DABR register, the BT (Breakpoint Translation) bit is bit number 61. In the new DAWRX register, the WT (Watchpoint Translation) bit is bit number 59. So to move the DABR-BT bit into the position of the DAWRX-WT bit, it has to be shifted by two, not only by one. This fixes hardware watchpoints in gdb of older guests that only use the H_SET_DABR/X interface instead of the new H_SET_MODE interface. Signed-off-by:
Thomas Huth <thuth@redhat.com> Reviewed-by:
Laurent Vivier <lvivier@redhat.com> Reviewed-by:
David Gibson <david@gibson.dropbear.id.au> Signed-off-by:
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Lars-Peter Clausen authored
commit d590faf9 upstream. The SPI tx and rx buffers are both supposed to be scan_bytes amount of bytes large and a common allocation is used to allocate both buffers. This puts the beginning of the tx buffer scan_bytes bytes after the rx buffer. The initialization of the tx buffer pointer is done adding scan_bytes to the beginning of the rx buffer, but since the rx buffer is of type __be16 this will actually add two times as much and the tx buffer ends up pointing after the allocated buffer. Fix this by using scan_count, which is scan_bytes / 2, instead of scan_bytes when initializing the tx buffer pointer. Fixes: aacff892 ("staging:iio:adis: Preallocate transfer message") Signed-off-by:
Lars-Peter Clausen <lars@metafoo.de> Signed-off-by:
Jonathan Cameron <jic23@kernel.org> Signed-off-by:
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- 08 Feb, 2016 1 commit
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David Vrabel authored
commit 98dd166e upstream. With commit 633d6f17 (x86/xen: prepare p2m list for memory hotplug) the P2M may be sized to accomdate a much larger amount of memory than the domain currently has. When saving a domain, the toolstack must scan all the P2M looking for populated pages. This results in a performance regression due to the unnecessary scanning. Instead of reporting (via shared_info) the maximum possible size of the P2M, hint at the last PFN which might be populated. This hint is increased as new leaves are added to the P2M (in the expectation that they will be used for populated entries). Signed-off-by:
David Vrabel <david.vrabel@citrix.com> [ tim.gardner: backport to 4.2-stable ] Signed-off-by:
Tim Gardner <tim.gardner@canonical.com> Signed-off-by:
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- 02 Feb, 2016 1 commit
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Kamal Mostafa authored
Signed-off-by:
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- 29 Jan, 2016 4 commits
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Dan Streetman authored
[ Upstream commit a8a572a6 ] Remove the dst_entries_init/destroy calls for xfrm4 and xfrm6 dst_ops templates; their dst_entries counters will never be used. Move the xfrm dst_ops initialization from the common xfrm/xfrm_policy.c to xfrm4/xfrm4_policy.c and xfrm6/xfrm6_policy.c, and call dst_entries_init and dst_entries_destroy for each net namespace. The ipv4 and ipv6 xfrms each create dst_ops template, and perform dst_entries_init on the templates. The template values are copied to each net namespace's xfrm.xfrm*_dst_ops. The problem there is the dst_ops pcpuc_entries field is a percpu counter and cannot be used correctly by simply copying it to another object. The result of this is a very subtle bug; changes to the dst entries counter from one net namespace may sometimes get applied to a different net namespace dst entries counter. This is because of how the percpu counter works; it has a main count field as well as a pointer to the percpu variables. Each net namespace maintains its own main count variable, but all point to one set of percpu variables. When any net namespace happens to change one of the percpu variables to outside its small batch range, its count is moved to the net namespace's main count variable. So with multiple net namespaces operating concurrently, the dst_ops entries counter can stray from the actual value that it should be; if counts are consistently moved from one net namespace to another (which my testing showed is likely), then one net namespace winds up with a negative dst_ops count while another winds up with a continually increasing count, eventually reaching its gc_thresh limit, which causes all new traffic on the net namespace to fail with -ENOBUFS. Signed-off-by:
Dan Streetman <dan.streetman@canonical.com> Signed-off-by:
Dan Streetman <ddstreet@ieee.org> Signed-off-by:
Steffen Klassert <steffen.klassert@secunet.com> Signed-off-by:
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Joe Jin authored
[ Upstream commit ca88ea12 ] Sometimes xennet_create_queues() may failed to created all requested queues, we need to update num_queues to real created to avoid NULL pointer dereference. Signed-off-by:
Joe Jin <joe.jin@oracle.com> Cc: Boris Ostrovsky <boris.ostrovsky@oracle.com> Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Cc: Wei Liu <wei.liu2@citrix.com> Cc: Ian Campbell <ian.campbell@citrix.com> Cc: David S. Miller <davem@davemloft.net> Reviewed-by:
Boris Ostrovsky <boris.ostrovsky@oracle.com> Signed-off-by:
David S. Miller <davem@davemloft.net> Signed-off-by:
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Wei Liu authored
[ Upstream commit 32a84405 ] Originally that parameter was always reset to num_online_cpus during module initialisation, which renders it useless. The fix is to only set max_queues to num_online_cpus when user has not provided a value. Signed-off-by:
Wei Liu <wei.liu2@citrix.com> Cc: David Vrabel <david.vrabel@citrix.com> Reviewed-by:
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Wei Liu authored
[ Upstream commit 4c82ac3c ] Originally that parameter was always reset to num_online_cpus during module initialisation, which renders it useless. The fix is to only set max_queues to num_online_cpus when user has not provided a value. Reported-by:
Johnny Strom <johnny.strom@linuxsolutions.fi> Signed-off-by:
Ian Campbell <ian.campbell@citrix.com> Signed-off-by:
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