- 15 Jul, 2017 20 commits
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Geert Uytterhoeven authored
commit 3091ae77 upstream. Update the sh_pfc_soc_info pointer after calling the SoC-specific initialization function, as it may have been updated to e.g. handle different SoC revisions. This makes sure the correct subdriver name is printed later. Fixes: 0c151062 ("sh-pfc: Add support for SoC-specific initialization") Signed-off-by:
Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by:
Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Uwe Kleine-König authored
commit da6c2add upstream. To set the mux mode of a pin two bits must be set. Up to now this is implemented using the following idiom: writel(mask, reg + CLR); writel(value, reg + SET); . This however results in the mux mode being 0 between the two writes. On my machine there is an IC's reset pin connected to LCD_D20. The bootloader configures this pin as GPIO output-high (i.e. not holding the IC in reset). When Linux reconfigures the pin to GPIO the short time LCD_D20 is muxed as LCD_D20 instead of GPIO_1_20 is enough to confuse the connected IC. The same problem is present for the pin's drive strength setting which is reset to low drive strength before using the right value. So instead of relying on the hardware to modify the register setting using two writes implement the bit toggling using read-modify-write. Fixes: 17723111 ("pinctrl: add pinctrl-mxs support") Signed-off-by:
Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Acked-by:
Shawn Guo <shawnguo@kernel.org> Signed-off-by:
Linus Walleij <linus.walleij@linaro.org> Signed-off-by:
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Chen-Yu Tsai authored
commit 7903d4f5 upstream. We use well known standard names for functions that have name, such as I2C, SPI, SPDIF, etc.. Fix the function name of SPDIF, which was named OWA (One Wire Audio) based on Allwinner datasheets. Fixes: 4730f33f ("pinctrl: sunxi: add allwinner A83T PIO controller support") Signed-off-by:
Chen-Yu Tsai <wens@csie.org> Acked-by:
Maxime Ripard <maxime.ripard@free-electrons.com> Signed-off-by:
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Martin Blumenstingl authored
commit 97ba26b8 upstream. The nand_groups table uses different names for the NAND DQS pins than the GROUP() definition in meson8b_cbus_groups (nand_dqs_0 vs nand_dqs0). This prevents using the NAND DQS pins in the devicetree. Fix this by ensuring that the GROUP() definition and the meson8b_cbus_groups use the same name for these pins. Fixes: 0fefcb68 ("pinctrl: Add support for Meson8b") Signed-off-by:
Martin Blumenstingl <martin.blumenstingl@googlemail.com> Acked-by:
Kevin Hilman <khilman@baylibre.com> Signed-off-by:
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Sergei Shtylyov authored
commit 58439280 upstream. PINMUX_IPSR_MSEL() macro invocation for the TX2 signal has apparently wrong 1st argument -- most probably a result of cut&paste programming... Fixes: 50884519 ("pinctrl: sh-pfc: r8a7791 PFC support") Signed-off-by:
Sergei Shtylyov <sergei.shtylyov@cogentembedded.com> Signed-off-by:
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Liping Zhang authored
commit 425fffd8 upstream. Currently, inputting the following command will succeed but actually the value will be truncated: # echo 0x12ffffffff > /proc/sys/net/ipv4/tcp_notsent_lowat This is not friendly to the user, so instead, we should report error when the value is larger than UINT_MAX. Fixes: e7d316a0 ("sysctl: handle error writing UINT_MAX to u32 fields") Signed-off-by:
Liping Zhang <zlpnobody@gmail.com> Cc: Subash Abhinov Kasiviswanathan <subashab@codeaurora.org> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Eric W. Biederman <ebiederm@xmission.com> Signed-off-by:
Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by:
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Liping Zhang authored
commit 5380e564 upstream. I saw some very confusing sysctl output on my system: # cat /proc/sys/net/core/xfrm_aevent_rseqth -2 # cat /proc/sys/net/core/xfrm_aevent_etime -10 # cat /proc/sys/net/ipv4/tcp_notsent_lowat -4294967295 Because we forget to set the *negp flag in proc_douintvec, so it will become a garbage value. Since the value related to proc_douintvec is always an unsigned integer, so we can set *negp to false explictily to fix this issue. Fixes: e7d316a0 ("sysctl: handle error writing UINT_MAX to u32 fields") Signed-off-by:
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Thomas Gleixner authored
commit 8fbcfeb8 upstream. mac80211_hwsim initializes a hrtimer with clockid CLOCK_MONOTONIC_RAW. That's not supported. Use CLOCK_MONOTONIC instead. Signed-off-by:
Thomas Gleixner <tglx@linutronix.de> Signed-off-by:
Johannes Berg <johannes.berg@intel.com> Signed-off-by:
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Benjamin Herrenschmidt authored
commit 7cf916bd upstream. The current definition is wrong. This breaks my upcoming Aspeed virtual hub driver. Signed-off-by:
Benjamin Herrenschmidt <benh@kernel.crashing.org> Acked-by:
Alan Stern <stern@rowland.harvard.edu> Signed-off-by:
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Michael Grzeschik authored
commit b3b51417 upstream. The usbip stack dynamically allocates the transfer_buffer and setup_packet of each urb that got generated by the tcp to usb stub code. As these pointers are always used only once we will set them to NULL after use. This is done likewise to the free_urb code in vudc_dev.c. This patch fixes double kfree situations where the usbip remote side added the URB_FREE_BUFFER. Signed-off-by:
Michael Grzeschik <m.grzeschik@pengutronix.de> Acked-by:
Shuah Khan <shuahkh@osg.samsung.com> Signed-off-by:
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Devin Heitmueller authored
commit 6836796d upstream. The USB core and sysfs will attempt to enumerate certain parameters which are unsupported by the au0828 - causing inconsistent behavior and sometimes causing the chip to reset. Avoid making these calls. This problem manifested as intermittent cases where the au8522 would be reset on analog video startup, in particular when starting up ALSA audio streaming in parallel - the sysfs entries created by snd-usb-audio on streaming startup would result in unsupported control messages being sent during tuning which would put the chip into an unknown state. Signed-off-by:
Devin Heitmueller <dheitmueller@kernellabs.com> Signed-off-by:
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Jeremie Rapin authored
commit fd90f73a upstream. Added the USB serial device ID for the CEL ZigBee EM3588 radio stick. Signed-off-by:
Jeremie Rapin <rapinj@gmail.com> Acked-by:
Johan Hovold <johan@kernel.org> Signed-off-by:
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Felipe Balbi authored
commit 04fb365c upstream. %p will leak kernel pointers, so let's not expose the information on dmesg and instead use %pK. %pK will only show the actual addresses if explicitly enabled under /proc/sys/kernel/kptr_restrict. Acked-by:
Felipe Balbi <felipe.balbi@linux.intel.com> Signed-off-by:
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Gerd Hoffmann authored
commit 385aee96 upstream. Reported-by:
李强 <liqiang6-s@360.cn> Signed-off-by:
Gerd Hoffmann <kraxel@redhat.com> Link: http://patchwork.freedesktop.org/patch/msgid/20170406155941.458-1-kraxel@redhat.comSigned-off-by:
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Sabrina Dubroca authored
commit 9e52b325 upstream. Always try to parse an address, since kstrtoul() will safely fail when given a symbol as input. If that fails (which will be the case for a symbol), try to parse a symbol instead. This allows creating a probe such as: p:probe/vlan_gro_receive 8021q:vlan_gro_receive+0 Which is necessary for this command to work: perf probe -m 8021q -a vlan_gro_receive Link: http://lkml.kernel.org/r/fd72d666f45b114e2c5b9cf7e27b91de1ec966f1.1498122881.git.sd@queasysnail.net Fixes: 413d37d1 ("tracing: Add kprobe-based event tracer") Acked-by:
Masami Hiramatsu <mhiramat@kernel.org> Signed-off-by:
Sabrina Dubroca <sd@queasysnail.net> Signed-off-by:
Steven Rostedt (VMware) <rostedt@goodmis.org> Signed-off-by:
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Vlastimil Babka authored
[Not upstream as that would take 34+ patches] We've got reported a BUG in do_try_to_free_pages(): BUG: unable to handle kernel paging request at ffff8ffffff28990 IP: [<ffffffff8119abe0>] do_try_to_free_pages+0x140/0x490 PGD 0 Oops: 0000 [#1] SMP megaraid_sas sg scsi_mod efivarfs autofs4 Supported: No, Unsupported modules are loaded Workqueue: kacpi_hotplug acpi_hotplug_work_fn task: ffff88ffd0d4c540 ti: ffff88ffd0e48000 task.ti: ffff88ffd0e48000 RIP: 0010:[<ffffffff8119abe0>] [<ffffffff8119abe0>] do_try_to_free_pages+0x140/0x490 RSP: 0018:ffff88ffd0e4ba60 EFLAGS: 00010206 RAX: 000006fffffff900 RBX: 00000000ffffffff RCX: ffff88fffff29000 RDX: 000000ffffffff00 RSI: 0000000000000003 RDI: 00000000024200c8 RBP: 0000000001320122 R08: 0000000000000000 R09: ffff88ffd0e4bbac R10: 0000000000000000 R11: 0000000000000000 R12: ffff88ffd0e4bae0 R13: 0000000000000e00 R14: ffff88fffff2a500 R15: ffff88fffff2b300 FS: 0000000000000000(0000) GS:ffff88ffe6440000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffff8ffffff28990 CR3: 0000000001c0a000 CR4: 00000000003406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Stack: 00000002db570a80 024200c80000001e ffff88fffff2b300 0000000000000000 ffff88fffffd5700 ffff88ffd0d4c540 ffff88ffd0d4c540 ffffffff0000000c 0000000000000000 0000000000000040 00000000024200c8 ffff88ffd0e4bae0 Call Trace: [<ffffffff8119afea>] try_to_free_pages+0xba/0x170 [<ffffffff8118cf2f>] __alloc_pages_nodemask+0x53f/0xb20 [<ffffffff811d39ff>] alloc_pages_current+0x7f/0x100 [<ffffffff811e2232>] migrate_pages+0x202/0x710 [<ffffffff815dadaa>] __offline_pages.constprop.23+0x4ba/0x790 [<ffffffff81463263>] memory_subsys_offline+0x43/0x70 [<ffffffff8144cbed>] device_offline+0x7d/0xa0 [<ffffffff81392fa2>] acpi_bus_offline+0xa5/0xef [<ffffffff81394a77>] acpi_device_hotplug+0x21b/0x41f [<ffffffff8138dab7>] acpi_hotplug_work_fn+0x1a/0x23 [<ffffffff81093cee>] process_one_work+0x14e/0x410 [<ffffffff81094546>] worker_thread+0x116/0x490 [<ffffffff810999ed>] kthread+0xbd/0xe0 [<ffffffff815e4e7f>] ret_from_fork+0x3f/0x70 This translates to the loop in shrink_zone(): classzone_idx = requested_highidx; while (!populated_zone(zone->zone_pgdat->node_zones + classzone_idx)) classzone_idx--; where no zone is populated, so classzone_idx becomes -1 (in RBX). Added debugging output reveals that we enter the function with sc->gfp_mask == GFP_NOFS|__GFP_NOFAIL|__GFP_HARDWALL|__GFP_MOVABLE requested_highidx = gfp_zone(sc->gfp_mask) == 2 (ZONE_NORMAL) Inside the for loop, however: gfp_zone(sc->gfp_mask) == 3 (ZONE_MOVABLE) This means we have gone through this branch: if (buffer_heads_over_limit) sc->gfp_mask |= __GFP_HIGHMEM; This changes the gfp_zone() result, but requested_highidx remains unchanged. On nodes where the only populated zone is movable, the inner while loop will check only lower zones, which are not populated, and underflow classzone_idx. To sum up, the bug occurs in configurations with ZONE_MOVABLE (such as when booted with the movable_node parameter) and only in situations when buffer_heads_over_limit is true, and there's an allocation with __GFP_MOVABLE and without __GFP_HIGHMEM performing direct reclaim. This patch makes sure that classzone_idx starts with the correct zone. Mainline has been affected in versions 4.6 and 4.7, but the culprit commit has been also included in stable trees. In mainline, this has been fixed accidentally as part of 34-patch series (plus follow-up fixes) "Move LRU page reclaim from zones to nodes", which makes the mainline commit unsuitable for stable backport, unfortunately. Fixes: 7bf52fb8 ("mm: vmscan: reclaim highmem zone if buffer_heads is over limit") Obsoleted-by: b2e18757 ("mm, vmscan: begin reclaiming pages on a per-node basis") Debugged-by:Michal Hocko <mhocko@suse.cz> Signed-off-by:
Vlastimil Babka <vbabka@suse.cz> Cc: Minchan Kim <minchan@kernel.org> Cc: Johannes Weiner <hannes@cmpxchg.org> Acked-by:
Mel Gorman <mgorman@techsingularity.net> Acked-by:
Michal Hocko <mhocko@suse.com> Signed-off-by:
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Rafał Miłecki authored
commit b4dfd8e9 upstream. This fixes Ethernet on D-Link DIR-885L with BCM47094 SoC. Felix reported similar fix was needed for his BCM4709 device (Buffalo WXR-1900DHP?). I tested this for regressions on BCM4706, BCM4708A0 and BCM47081A0. Cc: Felix Fietkau <nbd@openwrt.org> Signed-off-by:
Rafał Miłecki <zajec5@gmail.com> Signed-off-by:
David S. Miller <davem@davemloft.net> Signed-off-by:
Amit Pundir <amit.pundir@linaro.org> Signed-off-by:
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Adrian Salido authored
commit 62655397 upstream. The driver_override implementation is susceptible to race condition when different threads are reading vs storing a different driver override. Add locking to avoid race condition. Fixes: 3d713e0e ("driver core: platform: add device binding path 'driver_override'") Cc: stable@vger.kernel.org Signed-off-by:
Adrian Salido <salidoa@google.com> Signed-off-by:
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Christoph Hellwig authored
commit 629e014b upstream. Currently we just stash anything we got into file->f_flags, and the report it in fcntl(F_GETFD). This patch just clears out all unknown flags so that we don't pass them to the fs or report them. Signed-off-by:
Christoph Hellwig <hch@lst.de> Signed-off-by:
Al Viro <viro@zeniv.linux.org.uk> Signed-off-by:
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Christoph Hellwig authored
commit 80f18379 upstream. Add a central define for all valid open flags, and use it in the uniqueness check. Signed-off-by:
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- 05 Jul, 2017 20 commits
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Greg Kroah-Hartman authored
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Wanpeng Li authored
commit d4912215 upstream. WARNING: CPU: 3 PID: 2840 at arch/x86/kvm/vmx.c:10966 nested_vmx_vmexit+0xdcd/0xde0 [kvm_intel] CPU: 3 PID: 2840 Comm: qemu-system-x86 Tainted: G OE 4.12.0-rc3+ #23 RIP: 0010:nested_vmx_vmexit+0xdcd/0xde0 [kvm_intel] Call Trace: ? kvm_check_async_pf_completion+0xef/0x120 [kvm] ? rcu_read_lock_sched_held+0x79/0x80 vmx_queue_exception+0x104/0x160 [kvm_intel] ? vmx_queue_exception+0x104/0x160 [kvm_intel] kvm_arch_vcpu_ioctl_run+0x1171/0x1ce0 [kvm] ? kvm_arch_vcpu_load+0x47/0x240 [kvm] ? kvm_arch_vcpu_load+0x62/0x240 [kvm] kvm_vcpu_ioctl+0x384/0x7b0 [kvm] ? kvm_vcpu_ioctl+0x384/0x7b0 [kvm] ? __fget+0xf3/0x210 do_vfs_ioctl+0xa4/0x700 ? __fget+0x114/0x210 SyS_ioctl+0x79/0x90 do_syscall_64+0x81/0x220 entry_SYSCALL64_slow_path+0x25/0x25 This is triggered occasionally by running both win7 and win2016 in L2, in addition, EPT is disabled on both L1 and L2. It can't be reproduced easily. Commit 0b6ac343 (KVM: nVMX: Correct handling of exception injection) mentioned that "KVM wants to inject page-faults which it got to the guest. This function assumes it is called with the exit reason in vmcs02 being a #PF exception". Commit e011c663 (KVM: nVMX: Check all exceptions for intercept during delivery to L2) allows to check all exceptions for intercept during delivery to L2. However, there is no guarantee the exit reason is exception currently, when there is an external interrupt occurred on host, maybe a time interrupt for host which should not be injected to guest, and somewhere queues an exception, then the function nested_vmx_check_exception() will be called and the vmexit emulation codes will try to emulate the "Acknowledge interrupt on exit" behavior, the warning is triggered. Reusing the exit reason from the L2->L0 vmexit is wrong in this case, the reason must always be EXCEPTION_NMI when injecting an exception into L1 as a nested vmexit. Cc: Paolo Bonzini <pbonzini@redhat.com> Cc: Radim Krčmář <rkrcmar@redhat.com> Signed-off-by:
Wanpeng Li <wanpeng.li@hotmail.com> Fixes: e011c663 ("KVM: nVMX: Check all exceptions for intercept during delivery to L2") Signed-off-by:
Radim Krčmář <rkrcmar@redhat.com> Signed-off-by:
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Radim Krčmář authored
commit f0367ee1 upstream. Static checker noticed that base3 could be used uninitialized if the segment was not present (useable). Random stack values probably would not pass VMCS entry checks. Reported-by:
Dan Carpenter <dan.carpenter@oracle.com> Fixes: 1aa36616 ("KVM: x86 emulator: consolidate segment accessors") Reviewed-by:
Paolo Bonzini <pbonzini@redhat.com> Reviewed-by:
David Hildenbrand <david@redhat.com> Signed-off-by:
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Radim Krčmář authored
commit 34b0dadb upstream. Static analysis noticed that pmu->nr_arch_gp_counters can be 32 (INTEL_PMC_MAX_GENERIC) and therefore cannot be used to shift 'int'. I didn't add BUILD_BUG_ON for it as we have a better checker. Reported-by:
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Ladi Prosek authored
commit 6ed071f0 upstream. On AMD, the effect of set_nmi_mask called by emulate_iret_real and em_rsm on hflags is reverted later on in x86_emulate_instruction where hflags are overwritten with ctxt->emul_flags (the kvm_set_hflags call). This manifests as a hang when rebooting Windows VMs with QEMU, OVMF, and >1 vcpu. Instead of trying to merge ctxt->emul_flags into vcpu->arch.hflags after an instruction is emulated, this commit deletes emul_flags altogether and makes the emulator access vcpu->arch.hflags using two new accessors. This way all changes, on the emulator side as well as in functions called from the emulator and accessing vcpu state with emul_to_vcpu, are preserved. More details on the bug and its manifestation with Windows and OVMF: It's a KVM bug in the interaction between SMI/SMM and NMI, specific to AMD. I believe that the SMM part explains why we started seeing this only with OVMF. KVM masks and unmasks NMI when entering and leaving SMM. When KVM emulates the RSM instruction in em_rsm, the set_nmi_mask call doesn't stick because later on in x86_emulate_instruction we overwrite arch.hflags with ctxt->emul_flags, effectively reverting the effect of the set_nmi_mask call. The AMD-specific hflag of interest here is HF_NMI_MASK. When rebooting the system, Windows sends an NMI IPI to all but the current cpu to shut them down. Only after all of them are parked in HLT will the initiating cpu finish the restart. If NMI is masked, other cpus never get the memo and the initiating cpu spins forever, waiting for hal!HalpInterruptProcessorsStarted to drop. That's the symptom we observe. Fixes: a584539b ("KVM: x86: pass the whole hflags field to emulator and back") Signed-off-by:
Ladi Prosek <lprosek@redhat.com> Signed-off-by:
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Dan Carpenter authored
commit a69261e4 upstream. The "goto err_armclk;" error path already does a clk_put(s3c_freq->hclk); so this is a double free. Fixes: 34ee5507 ([CPUFREQ] Add S3C2416/S3C2450 cpufreq driver) Signed-off-by:
Krzysztof Kozlowski <krzk@kernel.org> Acked-by:
Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by:
Rafael J. Wysocki <rafael.j.wysocki@intel.com> Signed-off-by:
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Pan Bian authored
commit 73dbd4a4 upstream. In function amd_iommu_bind_pasid(), the control flow jumps to label out_free when pasid_state->mm and mm is NULL. And mmput(mm) is called. In function mmput(mm), mm is referenced without validation. This will result in a NULL dereference bug. This patch fixes the bug. Signed-off-by:
Pan Bian <bianpan2016@163.com> Fixes: f0aac63b ('iommu/amd: Don't hold a reference to mm_struct') Signed-off-by:
Joerg Roedel <jroedel@suse.de> Signed-off-by:
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Robin Murphy authored
commit 797a8b4d upstream. We wouldn't normally expect ops->attach_dev() to fail, but on IOMMUs with limited hardware resources, or generally misconfigured systems, it is certainly possible. We report failure correctly from the external iommu_attach_device() interface, but do not do so in iommu_group_add() when attaching to the default domain. The result of failure there is that the device, group and domain all get left in a broken, part-configured state which leads to weird errors and misbehaviour down the line when IOMMU API calls sort-of-but-don't-quite work. Check the return value of __iommu_attach_device() on the default domain, and refactor the error handling paths to cope with its failure and clean up correctly in such cases. Fixes: e39cb8a3 ("iommu: Make sure a device is always attached to a domain") Reported-by:
Punit Agrawal <punit.agrawal@arm.com> Signed-off-by:
Robin Murphy <robin.murphy@arm.com> Signed-off-by:
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David Dillow authored
commit f7116e11 upstream. dma_pte_free_level() recurses down the IOMMU page tables and frees directory pages that are entirely contained in the given PFN range. Unfortunately, it incorrectly calculates the starting address covered by the PTE under consideration, which can lead to it clearing an entry that is still in use. This occurs if we have a scatterlist with an entry that has a length greater than 1026 MB and is aligned to 2 MB for both the IOMMU and physical addresses. For example, if __domain_mapping() is asked to map a two-entry scatterlist with 2 MB and 1028 MB segments to PFN 0xffff80000, it will ask if dma_pte_free_pagetable() is asked to PFNs from 0xffff80200 to 0xffffc05ff, it will also incorrectly clear the PFNs from 0xffff80000 to 0xffff801ff because of this issue. The current code will set level_pfn to 0xffff80200, and 0xffff80200-0xffffc01ff fits inside the range being cleared. Properly setting the level_pfn for the current level under consideration catches that this PTE is outside of the range being cleared. This patch also changes the value passed into dma_pte_free_level() when it recurses. This only affects the first PTE of the range being cleared, and is handled by the existing code that ensures we start our cursor no lower than start_pfn. This was found when using dma_map_sg() to map large chunks of contiguous memory, which immediatedly led to faults on the first access of the erroneously-deleted mappings. Fixes: 3269ee0b ("intel-iommu: Fix leaks in pagetable freeing") Reviewed-by:
Benjamin Serebrin <serebrin@google.com> Signed-off-by:
David Dillow <dillow@google.com> Signed-off-by:
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Junxiao Bi authored
commit 33496c3c upstream. Configfs is the interface for ocfs2-tools to set configure to kernel and $configfs_dir/cluster/$clustername/heartbeat/dead_threshold is the one used to configure heartbeat dead threshold. Kernel has a default value of it but user can set O2CB_HEARTBEAT_THRESHOLD in /etc/sysconfig/o2cb to override it. Commit 45b99773 ("ocfs2/cluster: use per-attribute show and store methods") changed heartbeat dead threshold name while ocfs2-tools did not, so ocfs2-tools won't set this configurable and the default value is always used. So revert it. Fixes: 45b99773 ("ocfs2/cluster: use per-attribute show and store methods") Link: http://lkml.kernel.org/r/1490665245-15374-1-git-send-email-junxiao.bi@oracle.comSigned-off-by:
Junxiao Bi <junxiao.bi@oracle.com> Acked-by:
Joseph Qi <jiangqi903@gmail.com> Cc: Mark Fasheh <mfasheh@versity.com> Cc: Joel Becker <jlbec@evilplan.org> Signed-off-by:
Andrew Morton <akpm@linux-foundation.org> Signed-off-by:
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Andy Lutomirski authored
commit dbd68d8e upstream. flush_tlb_page() passes a bogus range to flush_tlb_others() and expects the latter to fix it up. native_flush_tlb_others() has the fixup but Xen's version doesn't. Move the fixup to flush_tlb_others(). AFAICS the only real effect is that, without this fix, Xen would flush everything instead of just the one page on remote vCPUs in when flush_tlb_page() was called. Signed-off-by:
Andy Lutomirski <luto@kernel.org> Reviewed-by:
Boris Ostrovsky <boris.ostrovsky@oracle.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Borislav Petkov <bp@alien8.de> Cc: Brian Gerst <brgerst@gmail.com> Cc: Dave Hansen <dave.hansen@intel.com> Cc: Denys Vlasenko <dvlasenk@redhat.com> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Josh Poimboeuf <jpoimboe@redhat.com> Cc: Juergen Gross <jgross@suse.com> Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Michal Hocko <mhocko@suse.com> Cc: Nadav Amit <namit@vmware.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Rik van Riel <riel@redhat.com> Cc: Thomas Gleixner <tglx@linutronix.de> Fixes: e7b52ffd ("x86/flush_tlb: try flush_tlb_single one by one in flush_tlb_range") Link: http://lkml.kernel.org/r/10ed0e4dfea64daef10b87fb85df1746999b4dba.1492844372.git.luto@kernel.orgSigned-off-by:
Ingo Molnar <mingo@kernel.org> Signed-off-by:
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Joerg Roedel authored
commit 5ed386ec upstream. When this function fails it just sends a SIGSEGV signal to user-space using force_sig(). This signal is missing essential information about the cause, e.g. the trap_nr or an error code. Fix this by propagating the error to the only caller of mpx_handle_bd_fault(), do_bounds(), which sends the correct SIGSEGV signal to the process. Signed-off-by:
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Doug Berger authored
commit 9e25ebfe upstream. The pmd containing memblock_limit is cleared by prepare_page_table() which creates the opportunity for early_alloc() to allocate unmapped memory if memblock_limit is not pmd aligned causing a boot-time hang. Commit 965278dc ("ARM: 8356/1: mm: handle non-pmd-aligned end of RAM") attempted to resolve this problem, but there is a path through the adjust_lowmem_bounds() routine where if all memory regions start and end on pmd-aligned addresses the memblock_limit will be set to arm_lowmem_limit. Since arm_lowmem_limit can be affected by the vmalloc early parameter, the value of arm_lowmem_limit may not be pmd-aligned. This commit corrects this oversight such that memblock_limit is always rounded down to pmd-alignment. Fixes: 965278dc ("ARM: 8356/1: mm: handle non-pmd-aligned end of RAM") Signed-off-by:
Doug Berger <opendmb@gmail.com> Suggested-by:
Mark Rutland <mark.rutland@arm.com> Signed-off-by:
Russell King <rmk+kernel@armlinux.org.uk> Signed-off-by:
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Lorenzo Pieralisi authored
commit cb7cf772 upstream. The BAD_MADT_GICC_ENTRY() macro checks if a GICC MADT entry passes muster from an ACPI specification standpoint. Current macro detects the MADT GICC entry length through ACPI firmware version (it changed from 76 to 80 bytes in the transition from ACPI 5.1 to ACPI 6.0 specification) but always uses (erroneously) the ACPICA (latest) struct (ie struct acpi_madt_generic_interrupt - that is 80-bytes long) length to check if the current GICC entry memory record exceeds the MADT table end in memory as defined by the MADT table header itself, which may result in false negatives depending on the ACPI firmware version and how the MADT entries are laid out in memory (ie on ACPI 5.1 firmware MADT GICC entries are 76 bytes long, so by adding 80 to a GICC entry start address in memory the resulting address may well be past the actual MADT end, triggering a false negative). Fix the BAD_MADT_GICC_ENTRY() macro by reshuffling the condition checks and update them to always use the firmware version specific MADT GICC entry length in order to carry out boundary checks. Fixes: b6cfb277 ("ACPI / ARM64: add BAD_MADT_GICC_ENTRY() macro") Reported-by:
Julien Grall <julien.grall@arm.com> Acked-by:
Will Deacon <will.deacon@arm.com> Acked-by:
Marc Zyngier <marc.zyngier@arm.com> Signed-off-by:
Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Cc: Julien Grall <julien.grall@arm.com> Cc: Hanjun Guo <hanjun.guo@linaro.org> Cc: Al Stone <ahs3@redhat.com> Signed-off-by:
Catalin Marinas <catalin.marinas@arm.com> Signed-off-by:
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Matt Fleming authored
commit 6e5f32f7 upstream. If we crossed a sample window while in NO_HZ we will add LOAD_FREQ to the pending sample window time on exit, setting the next update not one window into the future, but two. This situation on exiting NO_HZ is described by: this_rq->calc_load_update < jiffies < calc_load_update In this scenario, what we should be doing is: this_rq->calc_load_update = calc_load_update [ next window ] But what we actually do is: this_rq->calc_load_update = calc_load_update + LOAD_FREQ [ next+1 window ] This has the effect of delaying load average updates for potentially up to ~9seconds. This can result in huge spikes in the load average values due to per-cpu uninterruptible task counts being out of sync when accumulated across all CPUs. It's safe to update the per-cpu active count if we wake between sample windows because any load that we left in 'calc_load_idle' will have been zero'd when the idle load was folded in calc_global_load(). This issue is easy to reproduce before, commit 9d89c257 ("sched/fair: Rewrite runnable load and utilization average tracking") just by forking short-lived process pipelines built from ps(1) and grep(1) in a loop. I'm unable to reproduce the spikes after that commit, but the bug still seems to be present from code review. Signed-off-by:
Matt Fleming <matt@codeblueprint.co.uk> Signed-off-by:
Peter Zijlstra (Intel) <peterz@infradead.org> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Mike Galbraith <efault@gmx.de> Cc: Mike Galbraith <umgwanakikbuti@gmail.com> Cc: Morten Rasmussen <morten.rasmussen@arm.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Vincent Guittot <vincent.guittot@linaro.org> Fixes: commit 5167e8d5 ("sched/nohz: Rewrite and fix load-avg computation -- again") Link: http://lkml.kernel.org/r/20170217120731.11868-2-matt@codeblueprint.co.ukSigned-off-by:
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Eric Anholt authored
commit fedf266f upstream. The bcm_kona_wdt_set_resolution_reg() call takes the spinlock, so initialize it earlier. Fixes a warning at boot with lock debugging enabled. Fixes: 6adb730d ("watchdog: bcm281xx: Watchdog Driver") Signed-off-by:
Eric Anholt <eric@anholt.net> Reviewed-by:
Florian Fainelli <f.fainelli@gmail.com> Reviewed-by:
Guenter Roeck <linux@roeck-us.net> Signed-off-by:
Wim Van Sebroeck <wim@iguana.be> Signed-off-by:
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Dan Carpenter authored
commit 1e3d0c2c upstream. There are some missing error codes here so we accidentally return NULL instead of an error pointer. It results in a NULL pointer dereference. Fixes: df71837d ("[LSM-IPSec]: Security association restriction.") Signed-off-by:
Steffen Klassert <steffen.klassert@secunet.com> Signed-off-by:
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Dan Carpenter authored
commit e747f643 upstream. The default error code in pfkey_msg2xfrm_state() is -ENOBUFS. We added a new call to security_xfrm_state_alloc() which sets "err" to zero so there several places where we can return ERR_PTR(0) if kmalloc() fails. The caller is expecting error pointers so it leads to a NULL dereference. Fixes: df71837d ("[LSM-IPSec]: Security association restriction.") Signed-off-by:
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Sabrina Dubroca authored
commit 9b3eb541 upstream. When CONFIG_XFRM_SUB_POLICY=y, xfrm_dst stores a copy of the flowi for that dst. Unfortunately, the code that allocates and fills this copy doesn't care about what type of flowi (flowi, flowi4, flowi6) gets passed. In multiple code paths (from raw_sendmsg, from TCP when replying to a FIN, in vxlan, geneve, and gre), the flowi that gets passed to xfrm is actually an on-stack flowi4, so we end up reading stuff from the stack past the end of the flowi4 struct. Since xfrm_dst->origin isn't used anywhere following commit ca116922 ("xfrm: Eliminate "fl" and "pol" args to xfrm_bundle_ok()."), just get rid of it. xfrm_dst->partner isn't used either, so get rid of that too. Fixes: 9d6ec938 ("ipv4: Use flowi4 in public route lookup interfaces.") Signed-off-by:
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Gleb Fotengauer-Malinovskiy authored
commit 7292ae3d upstream. The latest change of asm goto support check added passing of KBUILD_CFLAGS to compiler. When these flags reference gcc plugins that are not built yet, the check fails. When one runs "make bzImage" followed by "make modules", the kernel is always built with HAVE_JUMP_LABEL disabled, while the modules are built depending on CONFIG_JUMP_LABEL. If HAVE_JUMP_LABEL macro happens to be different, modules are built with undefined references, e.g.: ERROR: "static_key_slow_inc" [net/netfilter/xt_TEE.ko] undefined! ERROR: "static_key_slow_dec" [net/netfilter/xt_TEE.ko] undefined! ERROR: "static_key_slow_dec" [net/netfilter/nft_meta.ko] undefined! ERROR: "static_key_slow_inc" [net/netfilter/nft_meta.ko] undefined! ERROR: "nf_hooks_needed" [net/netfilter/ipvs/ip_vs.ko] undefined! ERROR: "nf_hooks_needed" [net/ipv6/ipv6.ko] undefined! ERROR: "static_key_count" [net/ipv6/ipv6.ko] undefined! ERROR: "static_key_slow_inc" [net/ipv6/ipv6.ko] undefined! This change moves the check before all these references are added to KBUILD_CFLAGS. This is correct because subsequent KBUILD_CFLAGS modifications are not relevant to this check. Reported-by:
Anton V. Boyarshinov <boyarsh@altlinux.org> Fixes: 35f860f9 ("jump label: pass kbuild_cflags when checking for asm goto support") Signed-off-by:
Gleb Fotengauer-Malinovskiy <glebfm@altlinux.org> Signed-off-by:
Dmitry V. Levin <ldv@altlinux.org> Acked-by:
David Lin <dtwlin@google.com> Signed-off-by:
Masahiro Yamada <yamada.masahiro@socionext.com> Signed-off-by:
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