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2016-02-17parisc: Fix __ARCH_SI_PREAMBLE_SIZEHelge Deller1-0/+4
commit e60fc5aa608eb38b47ba4ee058f306f739eb70a0 upstream. On a 64bit kernel build the compiler aligns the _sifields union in the struct siginfo_t on a 64bit address. The __ARCH_SI_PREAMBLE_SIZE define compensates for this alignment and thus fixes the wait testcase of the strace package. The symptoms of a wrong __ARCH_SI_PREAMBLE_SIZE value is that _sigchld.si_stime variable is missed to be copied and thus after a copy_siginfo() will have uninitialized values. Signed-off-by: Helge Deller <deller@gmx.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-02-17parisc: Protect huge page pte changes with spinlocksHelge Deller2-28/+52
commit b0e551313ebde17764f3a5ed273df524d1e7e690 upstream. PA-RISC doesn't have atomic instructions to modify page table entries, so it takes spinlock in the TLB handler and modifies the page table entry non-atomically. If you modify the page table entry without the spinlock, you may race with TLB handler on another CPU and your modification may be lost. Protect against that with usage of purge_tlb_start() and purge_tlb_end() which handles the TLB spinlock. Signed-off-by: Helge Deller <deller@gmx.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-01-31arm64: kernel: fix architected PMU registers unconditional accessLorenzo Pieralisi3-2/+19
commit f436b2ac90a095746beb6729b8ee8ed87c9eaede 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: 60792ad349f3 ("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: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-01-31arm64: kernel: enforce pmuserenr_el0 initialization and restoreLorenzo Pieralisi2-3/+2
commit 60792ad349f3c6dc5735aafefe5dc9121c79e320 upstream. The pmuserenr_el0 register value is architecturally UNKNOWN on reset. Current kernel code resets that register value iff the core pmu device is correctly probed in the kernel. On platforms with missing DT pmu nodes (or disabled perf events in the kernel), the pmu is not probed, therefore the pmuserenr_el0 register is not reset in the kernel, which means that its value retains the reset value that is architecturally UNKNOWN (system may run with eg pmuserenr_el0 == 0x1, which means that PMU counters access is available at EL0, which must be disallowed). This patch adds code that resets pmuserenr_el0 on cold boot and restores it on core resume from shutdown, so that the pmuserenr_el0 setup is always enforced in the kernel. Cc: Mark Rutland <mark.rutland@arm.com> Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Signed-off-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-01-31arm64: mm: ensure that the zero page is visible to the page table walkerWill Deacon1-0/+3
commit 32d6397805d00573ce1fa55f408ce2bca15b0ad3 upstream. In paging_init, we allocate the zero page, memset it to zero and then point TTBR0 to it in order to avoid speculative fetches through the identity mapping. In order to guarantee that the freshly zeroed page is indeed visible to the page table walker, we need to execute a dsb instruction prior to writing the TTBR. Signed-off-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-01-31arm64: Clear out any singlestep state on a ptrace detach operationJohn Blackwood1-0/+6
commit 5db4fd8c52810bd9740c1240ebf89223b171aa70 upstream. Make sure to clear out any ptrace singlestep state when a ptrace(2) PTRACE_DETACH call is made on arm64 systems. Otherwise, the previously ptraced task will die off with a SIGTRAP signal if the debugger just previously singlestepped the ptraced task. Signed-off-by: John Blackwood <john.blackwood@ccur.com> [will: added comment to justify why this is in the arch code] Signed-off-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-01-31powerpc/module: Handle R_PPC64_ENTRY relocationsUlrich Weigand2-0/+29
commit a61674bdfc7c2bf909c4010699607b62b69b7bec upstream. GCC 6 will include changes to generated code with -mcmodel=large, which is used to build kernel modules on powerpc64le. This was necessary because the large model is supposed to allow arbitrary sizes and locations of the code and data sections, but the ELFv2 global entry point prolog still made the unconditional assumption that the TOC associated with any particular function can be found within 2 GB of the function entry point: func: addis r2,r12,(.TOC.-func)@ha addi r2,r2,(.TOC.-func)@l .localentry func, .-func To remove this assumption, GCC will now generate instead this global entry point prolog sequence when using -mcmodel=large: .quad .TOC.-func func: .reloc ., R_PPC64_ENTRY ld r2, -8(r12) add r2, r2, r12 .localentry func, .-func The new .reloc triggers an optimization in the linker that will replace this new prolog with the original code (see above) if the linker determines that the distance between .TOC. and func is in range after all. Since this new relocation is now present in module object files, the kernel module loader is required to handle them too. This patch adds support for the new relocation and implements the same optimization done by the GNU linker. Signed-off-by: Ulrich Weigand <ulrich.weigand@de.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-01-31powerpc: Make {cmp}xchg* and their atomic_ versions fully orderedBoqun Feng1-8/+8
commit 81d7a3294de7e9828310bbf986a67246b13fa01e upstream. According to memory-barriers.txt, xchg*, cmpxchg* and their atomic_ versions all need to be fully ordered, however they are now just RELEASE+ACQUIRE, which are not fully ordered. So also replace PPC_RELEASE_BARRIER and PPC_ACQUIRE_BARRIER with PPC_ATOMIC_ENTRY_BARRIER and PPC_ATOMIC_EXIT_BARRIER in __{cmp,}xchg_{u32,u64} respectively to guarantee fully ordered semantics of atomic{,64}_{cmp,}xchg() and {cmp,}xchg(), as a complement of commit b97021f85517 ("powerpc: Fix atomic_xxx_return barrier semantics") This patch depends on patch "powerpc: Make value-returning atomics fully ordered" for PPC_ATOMIC_ENTRY_BARRIER definition. Signed-off-by: Boqun Feng <boqun.feng@gmail.com> Reviewed-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-01-31powerpc: Make value-returning atomics fully orderedBoqun Feng1-1/+1
commit 49e9cf3f0c04bf76ffa59242254110309554861d upstream. According to memory-barriers.txt: > Any atomic operation that modifies some state in memory and returns > information about the state (old or new) implies an SMP-conditional > general memory barrier (smp_mb()) on each side of the actual > operation ... Which mean these operations should be fully ordered. However on PPC, PPC_ATOMIC_ENTRY_BARRIER is the barrier before the actual operation, which is currently "lwsync" if SMP=y. The leading "lwsync" can not guarantee fully ordered atomics, according to Paul Mckenney: https://lkml.org/lkml/2015/10/14/970 To fix this, we define PPC_ATOMIC_ENTRY_BARRIER as "sync" to guarantee the fully-ordered semantics. This also makes futex atomics fully ordered, which can avoid possible memory ordering problems if userspace code relies on futex system call for fully ordered semantics. Fixes: b97021f85517 ("powerpc: Fix atomic_xxx_return barrier semantics") Signed-off-by: Boqun Feng <boqun.feng@gmail.com> Reviewed-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-01-31powerpc/tm: Check for already reclaimed tasksMichael Neuling1-0/+18
commit 7f821fc9c77a9b01fe7b1d6e72717b33d8d64142 upstream. Currently we can hit a scenario where we'll tm_reclaim() twice. This results in a TM bad thing exception because the second reclaim occurs when not in suspend mode. The scenario in which this can happen is the following. We attempt to deliver a signal to userspace. To do this we need obtain the stack pointer to write the signal context. To get this stack pointer we must tm_reclaim() in case we need to use the checkpointed stack pointer (see get_tm_stackpointer()). Normally we'd then return directly to userspace to deliver the signal without going through __switch_to(). Unfortunatley, if at this point we get an error (such as a bad userspace stack pointer), we need to exit the process. The exit will result in a __switch_to(). __switch_to() will attempt to save the process state which results in another tm_reclaim(). This tm_reclaim() now causes a TM Bad Thing exception as this state has already been saved and the processor is no longer in TM suspend mode. Whee! This patch checks the state of the MSR to ensure we are TM suspended before we attempt the tm_reclaim(). If we've already saved the state away, we should no longer be in TM suspend mode. This has the additional advantage of checking for a potential TM Bad Thing exception. Found using syscall fuzzer. Fixes: fb09692e71f1 ("powerpc: Add reclaim and recheckpoint functions for context switching transactional memory processes") Signed-off-by: Michael Neuling <mikey@neuling.org> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-01-31x86/mm: Improve switch_mm() barrier commentsAndy Lutomirski1-7/+8
commit 4eaffdd5a5fe6ff9f95e1ab4de1ac904d5e0fa8b upstream. My previous comments were still a bit confusing and there was a typo. Fix it up. Reported-by: Peter Zijlstra <peterz@infradead.org> Signed-off-by: Andy Lutomirski <luto@kernel.org> Cc: Andy Lutomirski <luto@amacapital.net> Cc: Borislav Petkov <bp@alien8.de> Cc: Brian Gerst <brgerst@gmail.com> Cc: Dave Hansen <dave.hansen@linux.intel.com> Cc: Denys Vlasenko <dvlasenk@redhat.com> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Rik van Riel <riel@redhat.com> Cc: Thomas Gleixner <tglx@linutronix.de> Fixes: 71b3c126e611 ("x86/mm: Add barriers and document switch_mm()-vs-flush synchronization") Link: http://lkml.kernel.org/r/0a0b43cdcdd241c5faaaecfbcc91a155ddedc9a1.1452631609.git.luto@kernel.org Signed-off-by: Ingo Molnar <mingo@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-01-31x86/mm: Add barriers and document switch_mm()-vs-flush synchronizationAndy Lutomirski2-4/+58
commit 71b3c126e61177eb693423f2e18a1914205b165e upstream. When switch_mm() activates a new PGD, it also sets a bit that tells other CPUs that the PGD is in use so that TLB flush IPIs will be sent. In order for that to work correctly, the bit needs to be visible prior to loading the PGD and therefore starting to fill the local TLB. Document all the barriers that make this work correctly and add a couple that were missing. Signed-off-by: Andy Lutomirski <luto@kernel.org> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Andy Lutomirski <luto@amacapital.net> Cc: Borislav Petkov <bp@alien8.de> Cc: Brian Gerst <brgerst@gmail.com> Cc: Dave Hansen <dave.hansen@linux.intel.com> Cc: Denys Vlasenko <dvlasenk@redhat.com> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Rik van Riel <riel@redhat.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: linux-mm@kvack.org Signed-off-by: Ingo Molnar <mingo@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-01-31x86/boot: Double BOOT_HEAP_SIZE to 64KBH.J. Lu1-1/+1
commit 8c31902cffc4d716450be549c66a67a8a3dd479c upstream. When decompressing kernel image during x86 bootup, malloc memory for ELF program headers may run out of heap space, which leads to system halt. This patch doubles BOOT_HEAP_SIZE to 64KB. Tested with 32-bit kernel which failed to boot without this patch. Signed-off-by: H.J. Lu <hjl.tools@gmail.com> Acked-by: H. Peter Anvin <hpa@zytor.com> Cc: Andy Lutomirski <luto@amacapital.net> Cc: Borislav Petkov <bp@alien8.de> Cc: Brian Gerst <brgerst@gmail.com> Cc: Denys Vlasenko <dvlasenk@redhat.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: linux-kernel@vger.kernel.org Signed-off-by: Ingo Molnar <mingo@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-01-31x86/reboot/quirks: Add iMac10,1 to pci_reboot_dmi_table[]Mario Kleiner1-0/+8
commit 2f0c0b2d96b1205efb14347009748d786c2d9ba5 upstream. Without the reboot=pci method, the iMac 10,1 simply hangs after printing "Restarting system" at the point when it should reboot. This fixes it. Signed-off-by: Mario Kleiner <mario.kleiner.de@gmail.com> Cc: Andy Lutomirski <luto@amacapital.net> Cc: Borislav Petkov <bp@alien8.de> Cc: Brian Gerst <brgerst@gmail.com> Cc: Dave Jones <davej@codemonkey.org.uk> Cc: Denys Vlasenko <dvlasenk@redhat.com> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Link: http://lkml.kernel.org/r/1450466646-26663-1-git-send-email-mario.kleiner.de@gmail.com Signed-off-by: Ingo Molnar <mingo@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-01-31kvm: x86: Fix vmwrite to SECONDARY_VM_EXEC_CONTROLHuaitong Han1-1/+2
commit 45bdbcfdf241149642fb6c25ab0c209d59c371b7 upstream. vmx_cpuid_tries to update SECONDARY_VM_EXEC_CONTROL in the VMCS, but it will cause a vmwrite error on older CPUs because the code does not check for the presence of CPU_BASED_ACTIVATE_SECONDARY_CONTROLS. This will get rid of the following trace on e.g. Core2 6600: vmwrite error: reg 401e value 10 (err 12) Call Trace: [<ffffffff8116e2b9>] dump_stack+0x40/0x57 [<ffffffffa020b88d>] vmx_cpuid_update+0x5d/0x150 [kvm_intel] [<ffffffffa01d8fdc>] kvm_vcpu_ioctl_set_cpuid2+0x4c/0x70 [kvm] [<ffffffffa01b8363>] kvm_arch_vcpu_ioctl+0x903/0xfa0 [kvm] Fixes: feda805fe7c4ed9cf78158e73b1218752e3b4314 Reported-by: Zdenek Kaspar <zkaspar82@gmail.com> Signed-off-by: Huaitong Han <huaitong.han@intel.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-01-31KVM: x86: correctly print #AC in tracesPaolo Bonzini1-1/+1
commit aba2f06c070f604e388cf77b1dcc7f4cf4577eb0 upstream. Poor #AC was so unimportant until a few days ago that we were not even tracing its name correctly. But now it's all over the place. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-01-31KVM: x86: expose MSR_TSC_AUX to userspacePaolo Bonzini1-5/+6
commit 9dbe6cf941a6fe82933aef565e4095fb10f65023 upstream. If we do not do this, it is not properly saved and restored across migration. Windows notices due to its self-protection mechanisms, and is very upset about it (blue screen of death). Cc: Radim Krcmar <rkrcmar@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-01-31x86/xen: don't reset vcpu_info on a cancelled suspendOuyang Zhaowei (Charles)1-1/+2
commit 6a1f513776b78c994045287073e55bae44ed9f8c upstream. On a cancelled suspend the vcpu_info location does not change (it's still in the per-cpu area registered by xen_vcpu_setup()). So do not call xen_hvm_init_shared_info() which would make the kernel think its back in the shared info. With the wrong vcpu_info, events cannot be received and the domain will hang after a cancelled suspend. Signed-off-by: Charles Ouyang <ouyangzhaowei@huawei.com> Reviewed-by: Boris Ostrovsky <boris.ostrovsky@oracle.com> Signed-off-by: David Vrabel <david.vrabel@citrix.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-01-09Merge tag 'fixes-for-linus' of ↵Linus Torvalds7-12/+49
git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc Pull ARM SoC fixes from Arnd Bergmann: "This is the final small set of ARM SoC bug fixes for linux-4.4, almost all regressions: OMAP: - data corruption on the Nokia N900 flash Allwinner: - Two defconfig change to get USB working again ARM Versatile: - Interrupt numbers gone bad after an older bug fix Nomadik: - Crashes from incorrect L2 cache settings VIA vt8500: - SD/MMC support on WM8650 never worked" * tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: dts: vt8500: Add SDHC node to DTS file for WM8650 ARM: Fix broken USB support in multi_v7_defconfig for sunxi devices ARM: versatile: fix MMC/SD interrupt assignment ARM: nomadik: set latencies to 8 cycles ARM: OMAP2+: Fix onenand rate detection to avoid filesystem corruption ARM: Fix broken USB support in sunxi_defconfig
2016-01-09Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvmLinus Torvalds2-1/+3
Pull KVM fix from Paolo Bonzini: "A simple fix. I'm sending it before the merge window, because it refines a patch found in your master branch but not yet in the kvm/next branch that is destined for 4.5" * tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: kvm: x86: only channel 0 of the i8254 is linked to the HPET
2016-01-09Merge branch 'x86-urgent-for-linus' of ↵Linus Torvalds13-32/+96
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull x86 fixes from Ingo Molnar: "A handful of x86 fixes: - a syscall ABI fix, fixing an Android breakage - a Xen PV guest fix relating to the RTC device, causing a non-working console - a Xen guest syscall stack frame fix - an MCE hotplug CPU crash fix" * 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/numachip: Fix NumaConnect2 MMCFG PCI access x86/entry: Restore traditional SYSENTER calling convention x86/entry: Fix some comments x86/paravirt: Prevent rtc_cmos platform device init on PV guests x86/xen: Avoid fast syscall path for Xen PV guests x86/mce: Ensure offline CPUs don't participate in rendezvous process
2016-01-08Merge tag 'omap-for-v4.4/onenand-corruption' of ↵Arnd Bergmann1-5/+9
git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into fixes Pull "urgent onenand file system corruption fix for n900" from Tony Lindgren: Last minute urgent pull request to prevent file system corruption on Nokia N900. Looks like we have a GPMC bus timing bug that has gone unnoticed because of bootloader configured registers until few days ago. We are not detecting the onenand clock rate properly unless we have CONFIG_OMAP_GPMC_DEBUG set and this causes onenand corruption that can be easily be reproduced. There seems to be also an additional bug still lurking around for onenand corruption. But that is still being investigated and it does not seem to be GPMC timings related. Meanwhile, it would be good to get this fix into v4.4 to prevent wrong timings from corrupting onenand. * tag 'omap-for-v4.4/onenand-corruption' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap: ARM: OMAP2+: Fix onenand rate detection to avoid filesystem corruption
2016-01-07dts: vt8500: Add SDHC node to DTS file for WM8650Roman Volkov1-0/+9
Since WM8650 has the same 'WMT' SDHC controller as WM8505, and the driver is already in the kernel, this node enables the controller support for WM8650 Signed-off-by: Roman Volkov <rvolkov@v1ros.org> Reviewed-by: Alexey Charkov <alchark@gmail.com> Cc: stable@vger.kernel.org Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2016-01-07ARM: Fix broken USB support in multi_v7_defconfig for sunxi devicesTimo Sigurdsson1-0/+1
Commit 69fb4dcada77 ("power: Add an axp20x-usb-power driver") introduced a new driver for the USB power supply used on various Allwinner based SBCs. However, the driver was not added to multi_v7_defconfig which breaks USB support for some boards (e.g. LeMaker BananaPi) as the kernel will now turn off the USB power supply during boot by default if the driver isn't present. (This was not the case in linux 4.3 or lower where the USB power was always left on.) Hence, add the driver to multi_v7_defconfig in order to keep USB support working on those boards that require it. Signed-off-by: Timo Sigurdsson <public_timo.s@silentcreek.de> Tested-by: Timo Sigurdsson <public_timo.s@silentcreek.de> Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2016-01-07kvm: x86: only channel 0 of the i8254 is linked to the HPETPaolo Bonzini2-1/+3
While setting the KVM PIT counters in 'kvm_pit_load_count', if 'hpet_legacy_start' is set, the function disables the timer on channel[0], instead of the respective index 'channel'. This is because channels 1-3 are not linked to the HPET. Fix the caller to only activate the special HPET processing for channel 0. Reported-by: P J P <pjp@fedoraproject.org> Fixes: 0185604c2d82c560dab2f2933a18f797e74ab5a8 Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2016-01-07ARM: versatile: fix MMC/SD interrupt assignmentLinus Walleij2-4/+26
Commit 0976c946a610d06e907335b7a3afa6db046f8e1b "arm/versatile: Fix versatile irq specifications" has an off-by-one error on the Versatile AB that has been regressing the Versatile AB hardware for some time. However it seems like the interrupt assignments have never been correct and I have now adjusted them according to the specification. The masks for the valid interrupts made it impossible to assign the right SIC interrupt for the MMCI, so I went in and fixed these to correspond to the specifications, and added references if anyone wants to double-check. Due to the Versatile PB including the Versatile AB as a base DTS file, we need to override and correct some values to correspond to the actual changes in the hardware. For the Versatile PB I don't think the IRQ line assignment for MMCI has ever been correct for either of the two MMCI blocks. It would be nice if someone with the physical PB board could test this. Patch tested on the Versatile AB, QEMU for Versatile AB and QEMU for Versatile PB. Cc: Rob Herring <robh@kernel.org> Cc: Grant Likely <grant.likely@linaro.org> Cc: stable@vger.kernel.org Fixes: 0976c946a610 ("arm/versatile: Fix versatile irq specifications") Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Olof Johansson <olof@lixom.net>
2016-01-07ARM: nomadik: set latencies to 8 cyclesLinus Walleij1-3/+3
The Nomadik has sporadic crashes because of these latencies, setting them to max makes the platform work nicely, so use this values for now. These latencies were set to 2 since the Nomadik platform was merged, but I suspect they never took effect until the right size and associativity for the cache was specified in the device tree and that is why the crash comes now. Cc: stable@vger.kernel.org Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Olof Johansson <olof@lixom.net>
2016-01-07Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/netLinus Torvalds4-57/+8
Pull networking fixes from David Miller: "As usual, there are a couple straggler bug fixes: 1) qlcnic_alloc_mbx_args() error returns are not checked in qlcnic driver. Fix from Insu Yun. 2) SKB refcounting bug in connector, from Florian Westphal. 3) vrf_get_saddr() has to propagate fib_lookup() errors to it's callers, from David Ahern. 4) Fix AF_UNIX splice/bind deadlock, from Rainer Weikusat. 5) qdisc_rcu_free() fails to free the per-cpu qstats. Fix from John Fastabend. 6) vmxnet3 driver passes wrong page to dma_map_page(), fix from Shrikrishna Khare. 7) Don't allow zero cwnd in tcp_cwnd_reduction(), from Yuchung Cheng" * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: tcp: fix zero cwnd in tcp_cwnd_reduction Driver: Vmxnet3: Fix regression caused by 5738a09 net: qmi_wwan: Add WeTelecom-WPD600N mkiss: fix scribble on freed memory net: possible use after free in dst_release net: sched: fix missing free per cpu on qstats ARM: net: bpf: fix zero right shift 6pack: fix free memory scribbles net: filter: make JITs zero A for SKF_AD_ALU_XOR_X bridge: Only call /sbin/bridge-stp for the initial network namespace af_unix: Fix splice-bind deadlock net: Propagate lookup failure in l3mdev_get_saddr to caller r8152: add reset_resume function connector: bump skb->users before callback invocation cxgb4: correctly handling failed allocation qlcnic: correctly handle qlcnic_alloc_mbx_args
2016-01-06ARM: OMAP2+: Fix onenand rate detection to avoid filesystem corruptionTony Lindgren1-5/+9
Commit 63aa945b1013 ("memory: omap-gpmc: Add Kconfig option for debug") unified the GPMC debug for the SoCs with GPMC. The commit also left out the option for HWMOD_INIT_NO_RESET as we now require proper timings for GPMC to be able to remap GPMC devices out of address 0. Unfortunately on Nokia N900, onenand now only partially works with the device tree provided timings. It works enough to get detected but the clock rate supported by the onenand chip gets misdetected. This in turn causes the GPMC timings to be miscalculated and this leads into file system corruption on N900. Looks like onenand needs CS_CONFIG1 bit 27 WRITETYPE set for for sync write. This is needed also for async timings when we write to onenand with omap2_onenand_set_async_mode(). Without sync write bit set, the async read for the onenand ONENAND_REG_VERSION_ID will return 0xfff. Let's exit with an error if onenand rate is not detected. And let's remove the extra call to omap2_onenand_set_async_mode() as we only need to do this once at the end of omap2_onenand_setup_async(). Fixes: 63aa945b1013 ("memory: omap-gpmc: Add Kconfig option for debug") Cc: stable@vger.kernel.org # v4.2+ Reported-by: Ivaylo Dimitrov <ivo.g.dimitrov.75@gmail.com> Tested-by: Ivaylo Dimitrov <ivo.g.dimitrov.75@gmail.com> Tested-by: Aaro Koskinen <aaro.koskinen@iki.fi> Signed-off-by: Tony Lindgren <tony@atomide.com>
2016-01-06ARM: net: bpf: fix zero right shiftRabin Vincent1-1/+2
The LSR instruction cannot be used to perform a zero right shift since a 0 as the immediate value (imm5) in the LSR instruction encoding means that a shift of 32 is perfomed. See DecodeIMMShift() in the ARM ARM. Make the JIT skip generation of the LSR if a zero-shift is requested. This was found using american fuzzy lop. Signed-off-by: Rabin Vincent <rabin@rab.in> Acked-by: Alexei Starovoitov <ast@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-01-06net: filter: make JITs zero A for SKF_AD_ALU_XOR_XRabin Vincent4-56/+6
The SKF_AD_ALU_XOR_X ancillary is not like the other ancillary data instructions since it XORs A with X while all the others replace A with some loaded value. All the BPF JITs fail to clear A if this is used as the first instruction in a filter. This was found using american fuzzy lop. Add a helper to determine if A needs to be cleared given the first instruction in a filter, and use this in the JITs. Except for ARM, the rest have only been compile-tested. Fixes: 3480593131e0 ("net: filter: get rid of BPF_S_* enum") Signed-off-by: Rabin Vincent <rabin@rab.in> Acked-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: Alexei Starovoitov <ast@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-01-06Merge branch 'stable' of ↵Linus Torvalds2-9/+10
git://git.kernel.org/pub/scm/linux/kernel/git/cmetcalf/linux-tile Pull tile bugfix from Chris Metcalf: "This fixes a bug that Sudip's buildbot found for tilepro allmodconfig. I've tagged it for stable only back to 3.19, which was when most of the other affected architectures added their support for working around this issue" * 'stable' of git://git.kernel.org/pub/scm/linux/kernel/git/cmetcalf/linux-tile: tile: provide CONFIG_PAGE_SIZE_64KB etc for tilepro
2016-01-05tile: provide CONFIG_PAGE_SIZE_64KB etc for tileproChris Metcalf2-9/+10
This allows the build system to know that it can't attempt to configure the Lustre virtual block device, for example, when tilepro is using 64KB pages (as it does by default). The tilegx build already provided those symbols. Previously we required that the tilepro hypervisor be rebuilt with a different hardcoded page size in its headers, and then Linux be rebuilt using the updated hypervisor header. Now we allow each of the hypervisor and Linux to be built independently. We still check at boot time to ensure that the page size provided by the hypervisor matches what Linux expects. Signed-off-by: Chris Metcalf <cmetcalf@ezchip.com> Cc: stable@vger.kernel.org [3.19+]
2016-01-03Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linusLinus Torvalds1-1/+1
Pull MIPS build fix from Ralf Baechle: "Fix a makefile issue resulting in build breakage with older binutils. This has sat in -next for a few days, testers and buildbot are happy with it, too though if you are going for another -rc that'd certainly help ironing out a few more issues" * 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus: MIPS: VDSO: Fix build error with binutils 2.24 and earlier
2016-01-01Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparcLinus Torvalds3-18/+25
Pull sparc fixes from David Miller: "Just some missing syscall wire ups" * git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc: sparc: Wire up mlock2 system call. sparc: Add all necessary direct socket system calls.
2015-12-31sparc: Wire up mlock2 system call.David S. Miller3-4/+5
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-12-31sparc: Add all necessary direct socket system calls.David S. Miller3-18/+24
The GLIBC folks would like to eliminate socketcall support eventually, and this makes sense regardless so wire them all up. Signed-off-by: David S. Miller <davem@davemloft.net>
2015-12-31ARM: Fix broken USB support in sunxi_defconfigTimo Sigurdsson1-0/+1
Commit 69fb4dcada77 ("power: Add an axp20x-usb-power driver") introduced a new driver for the USB power supply used on various Allwinner based SBCs. However, the driver was not added to sunxi_defconfig which breaks USB support for some boards (e.g. LeMaker BananaPi) as the kernel will now turn off the USB power supply during boot by default if the driver isn't present. (This was not the case in linux 4.3 or lower where the USB power was always left on.) Hence, add the driver to sunxi_defconfig in order to keep USB support working on those boards that require it. Signed-off-by: Timo Sigurdsson <public_timo.s@silentcreek.de> Reported-by: David Tulloh <david@tulloh.id.au> Tested-by: David Tulloh <david@tulloh.id.au> Tested-by: Timo Sigurdsson <public_timo.s@silentcreek.de> Signed-off-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com>
2015-12-30x86/numachip: Fix NumaConnect2 MMCFG PCI accessDaniel J Blueman1-4/+1
The MMCFG PCI accessors weren't being setup for NumacConnect2 correctly due to over-early assignment; this would create the potential for the wrong PCI domain to be accessed. Fix this by using the correct arch-specific PCI init function. Signed-off-by: Daniel J Blueman <daniel@numascale.com> Acked-by: Steffen Persvold <sp@numascale.com> Cc: Daniel Lezcano <daniel.lezcano@linaro.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Link: http://lkml.kernel.org/r/1451498807-15920-1-git-send-email-daniel@numascale.com Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2015-12-30Merge branch 'akpm' (patches from Andrew)Linus Torvalds3-1/+11
Merge misc fixes from Andrew Morton: "9 fixes" * emailed patches from Andrew Morton <akpm@linux-foundation.org>: mm/vmstat: fix overflow in mod_zone_page_state() ocfs2/dlm: clear migration_pending when migration target goes down mm/memory_hotplug.c: check for missing sections in test_pages_in_a_zone() ocfs2: fix flock panic issue m32r: add io*_rep helpers m32r: fix build failure arch/x86/xen/suspend.c: include xen/xen.h mm: memcontrol: fix possible memcg leak due to interrupted reclaim ocfs2: fix BUG when calculate new backup super
2015-12-30m32r: add io*_rep helpersSudip Mukherjee1-1/+9
m32r allmodconfig was failing with the error: error: implicit declaration of function 'read' On checking io.h it turned out that 'read' is not defined but 'readb' is defined and 'ioread8' will then obviously mean 'readb'. At the same time some of the helper functions ioreadN_rep() and iowriteN_rep() were missing which also led to the build failure. Signed-off-by: Sudip Mukherjee <sudip@vectorindia.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-12-30m32r: fix build failureSudip Mukherjee1-0/+1
m32r allmodconfig is failing with: In file included from ../include/linux/kvm_para.h:4:0, from ../kernel/watchdog.c:26: ../include/uapi/linux/kvm_para.h:30:26: fatal error: asm/kvm_para.h: No such file or directory kvm_para.h was not included in the build. Signed-off-by: Sudip Mukherjee <sudip@vectorindia.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-12-30arch/x86/xen/suspend.c: include xen/xen.hAndrew Morton1-0/+1
Fix the build warning: arch/x86/xen/suspend.c: In function 'xen_arch_pre_suspend': arch/x86/xen/suspend.c:70:9: error: implicit declaration of function 'xen_pv_domain' [-Werror=implicit-function-declaration] if (xen_pv_domain()) ^ Reported-by: kbuild test robot <fengguang.wu@intel.com> Cc: Sasha Levin <sasha.levin@oracle.com> Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Cc: Boris Ostrovsky <boris.ostrovsky@oracle.com> Cc: David Vrabel <david.vrabel@citrix.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-12-30MIPS: VDSO: Fix build error with binutils 2.24 and earlierGuenter Roeck1-1/+1
Commit 2a037f310bab ("MIPS: VDSO: Fix build error") tries to fix a build error seen with binutils 2.24 and earlier. However, the fix does not work, and again results in the already known build errors if the kernel is built with an earlier version of binutils. CC arch/mips/vdso/gettimeofday.o /tmp/ccnOVbHT.s: Assembler messages: /tmp/ccnOVbHT.s:50: Error: can't resolve `_start' {*UND* section} - `L0 {.text section} /tmp/ccnOVbHT.s:374: Error: can't resolve `_start' {*UND* section} - `L0 {.text section} scripts/Makefile.build:258: recipe for target 'arch/mips/vdso/gettimeofday.o' failed make[2]: *** [arch/mips/vdso/gettimeofday.o] Error 1 Fixes: 2a037f310bab ("MIPS: VDSO: Fix build error") Cc: Qais Yousef <qais.yousef@imgtec.com> Cc: linux-mips@linux-mips.org Cc: linux-kernel@vger.kernel.org Patchwork: https://patchwork.linux-mips.org/patch/11926/ Signed-off-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2015-12-29[PATCH] arm: fix handling of F_OFD_... in oabi_fcntl64()Al Viro1-36/+37
Cc: stable@vger.kernel.org # 3.15+ Reviewed-by: Jeff Layton <jeff.layton@primarydata.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2015-12-28Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linusLinus Torvalds8-24/+42
Pull MIPS fixes from Ralf Baechle: - Fix bitrot in __get_user_unaligned() - EVA userspace accessor bug fixes. - Fix for build issues with certain toolchains. - Fix build error for VDSO with particular toolchain versions. - Fix build error due to a variable that should have been removed by an earlier patch * 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus: MIPS: Fix bitrot in __get_user_unaligned() MIPS: Fix build error due to unused variables. MIPS: VDSO: Fix build error MIPS: CPS: drop .set mips64r2 directives MIPS: uaccess: Take EVA into account in [__]clear_user MIPS: uaccess: Take EVA into account in __copy_from_user() MIPS: uaccess: Fix strlen_user with EVA
2015-12-28Merge tag 'armsoc-fixes' of ↵Linus Torvalds11-9/+22
git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc Pull ARM SoC fixes from Olof Johansson: "A smallish set of fixes that we've been sitting on for a while now, flushing the queue here so they go in. Summary: A handful of fixes for OMAP, i.MX, Allwinner and Tegra: - A clock rate and a PHY setup fix for i.MX6Q/DL - A couple of fixes for the reduced serial bus (sunxi-rsb) on Allwinner - UART wakeirq fix for an OMAP4 board, timer config fixes for AM43XX. - Suspend fix for Tegra124 Chromebooks - Fix for missing implicit include that's different between ARM/ARM64" * tag 'armsoc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: ARM: tegra: Fix suspend hang on Tegra124 Chromebooks bus: sunxi-rsb: Fix peripheral IC mapping runtime address bus: sunxi-rsb: Fix primary PMIC mapping hardware address ARM: dts: Fix UART wakeirq for omap4 duovero parlor ARM: OMAP2+: AM43xx: select ARM TWD timer ARM: OMAP2+: am43xx: enable GENERIC_CLOCKEVENTS_BROADCAST fsl-ifc: add missing include on ARM64 ARM: dts: imx6: Fix Ethernet PHY mode on Ventana boards ARM: dts: imx: Fix the assigned-clock mismatch issue on imx6q/dl bus: sunxi-rsb: unlock on error in sunxi_rsb_read() ARM: dts: sunxi: sun6i-a31s-primo81.dts: add touchscreen axis swapping property
2015-12-27MIPS: Fix bitrot in __get_user_unaligned()Al Viro1-3/+3
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2015-12-27Merge tag 'arc-4.4-rc7-fixes' of ↵Linus Torvalds4-22/+14
git://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arc Pull ARC fixes from Vineet Gupta: "Sorry for this late pull request, but these are all important fixes for code introduced/updated in this release which we will otherwise end up back porting. - Unwinder rework (A revert followed by better fix) - Build errors: MMUv2, modules with -Os - highmem section mismatch build splat" * tag 'arc-4.4-rc7-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arc: ARC: dw2 unwind: Catch Dwarf SNAFUs early ARC: dw2 unwind: Don't bail for CIE.version != 1 Revert "ARC: dw2 unwind: Ignore CIE version !=1 gracefully instead of bailing" ARC: Fix linking errors with CONFIG_MODULE + CONFIG_CC_OPTIMIZE_FOR_SIZE ARC: mm: fix building for MMU v2 ARC: mm: HIGHMEM: Fix section mismatch splat
2015-12-26Merge branch 'parisc-4.4-4' of ↵Linus Torvalds1-12/+52
git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux Pull parisc system call restart fix from Helge Deller: "The architectural design of parisc always uses two instructions to call kernel syscalls (delayed branch feature). This means that the instruction following the branch (located in the delay slot of the branch instruction) is executed before control passes to the branch destination. Depending on which assembler instruction and how it is used in usersapce in the delay slot, this sometimes made restarted syscalls like futex() and poll() failing with -ENOSYS" * 'parisc-4.4-4' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux: parisc: Fix syscall restarts