- 25 9月, 2018 3 次提交
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由 Srikar Dronamraju 提交于
Currently associativity is used to lookup node-id even if the preceding VPHN hcall failed. However this can cause CPU to be made part of the wrong node, (most likely to be node 0). This is because VPHN is not enabled on KVM guests. With 2ea62630 ("powerpc/topology: Get topology for shared processors at boot"), associativity is used to set to the wrong node. Hence KVM guest topology is broken. For example : A 4 node KVM guest before would have reported. [root@localhost ~]# numactl -H available: 4 nodes (0-3) node 0 cpus: 0 1 2 3 node 0 size: 1746 MB node 0 free: 1604 MB node 1 cpus: 4 5 6 7 node 1 size: 2044 MB node 1 free: 1765 MB node 2 cpus: 8 9 10 11 node 2 size: 2044 MB node 2 free: 1837 MB node 3 cpus: 12 13 14 15 node 3 size: 2044 MB node 3 free: 1903 MB node distances: node 0 1 2 3 0: 10 40 40 40 1: 40 10 40 40 2: 40 40 10 40 3: 40 40 40 10 Would now report: [root@localhost ~]# numactl -H available: 4 nodes (0-3) node 0 cpus: 0 2 3 4 5 6 7 8 9 10 11 12 13 14 15 node 0 size: 1746 MB node 0 free: 1244 MB node 1 cpus: node 1 size: 2044 MB node 1 free: 2032 MB node 2 cpus: 1 node 2 size: 2044 MB node 2 free: 2028 MB node 3 cpus: node 3 size: 2044 MB node 3 free: 2032 MB node distances: node 0 1 2 3 0: 10 40 40 40 1: 40 10 40 40 2: 40 40 10 40 3: 40 40 40 10 Fix this by skipping associativity lookup if the VPHN hcall failed. Fixes: 2ea62630 ("powerpc/topology: Get topology for shared processors at boot") Signed-off-by: NSrikar Dronamraju <srikar@linux.vnet.ibm.com> Signed-off-by: NMichael Ellerman <mpe@ellerman.id.au>
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由 Michael Neuling 提交于
Current we store the userspace r1 to PACATMSCRATCH before finally saving it to the thread struct. In theory an exception could be taken here (like a machine check or SLB miss) that could write PACATMSCRATCH and hence corrupt the userspace r1. The SLB fault currently doesn't touch PACATMSCRATCH, but others do. We've never actually seen this happen but it's theoretically possible. Either way, the code is fragile as it is. This patch saves r1 to the kernel stack (which can't fault) before we turn MSR[RI] back on. PACATMSCRATCH is still used but only with MSR[RI] off. We then copy r1 from the kernel stack to the thread struct once we have MSR[RI] back on. Suggested-by: NBreno Leitao <leitao@debian.org> Signed-off-by: NMichael Neuling <mikey@neuling.org> Signed-off-by: NMichael Ellerman <mpe@ellerman.id.au>
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由 Michael Neuling 提交于
When we treclaim we store the userspace checkpointed r13 to a scratch SPR and then later save the scratch SPR to the user thread struct. Unfortunately, this doesn't work as accessing the user thread struct can take an SLB fault and the SLB fault handler will write the same scratch SPRG that now contains the userspace r13. To fix this, we store r13 to the kernel stack (which can't fault) before we access the user thread struct. Found by running P8 guest + powervm + disable_1tb_segments + TM. Seen as a random userspace segfault with r13 looking like a kernel address. Signed-off-by: NMichael Neuling <mikey@neuling.org> Reviewed-by: NBreno Leitao <leitao@debian.org> Signed-off-by: NMichael Ellerman <mpe@ellerman.id.au>
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- 24 9月, 2018 1 次提交
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由 Michael Bringmann 提交于
After migration of a powerpc LPAR, the kernel executes code to update the system state to reflect new platform characteristics. Such changes include modifications to device tree properties provided to the system by PHYP. Property notifications received by the post_mobility_fixup() code are passed along to the kernel in general through a call to of_update_property() which in turn passes such events back to all modules through entries like the '.notifier_call' function within the NUMA module. When the NUMA module updates its state, it resets its event timer. If this occurs after a previous call to stop_topology_update() or on a system without VPHN enabled, the code runs into an unitialized timer structure and crashes. This patch adds a safety check along this path toward the problem code. An example crash log is as follows. ibmvscsi 30000081: Re-enabling adapter! ------------[ cut here ]------------ kernel BUG at kernel/time/timer.c:958! Oops: Exception in kernel mode, sig: 5 [#1] LE SMP NR_CPUS=2048 NUMA pSeries Modules linked in: nfsv3 nfs_acl nfs tcp_diag udp_diag inet_diag lockd unix_diag af_packet_diag netlink_diag grace fscache sunrpc xts vmx_crypto pseries_rng sg binfmt_misc ip_tables xfs libcrc32c sd_mod ibmvscsi ibmveth scsi_transport_srp dm_mirror dm_region_hash dm_log dm_mod CPU: 11 PID: 3067 Comm: drmgr Not tainted 4.17.0+ #179 ... NIP mod_timer+0x4c/0x400 LR reset_topology_timer+0x40/0x60 Call Trace: 0xc0000003f9407830 (unreliable) reset_topology_timer+0x40/0x60 dt_update_callback+0x100/0x120 notifier_call_chain+0x90/0x100 __blocking_notifier_call_chain+0x60/0x90 of_property_notify+0x90/0xd0 of_update_property+0x104/0x150 update_dt_property+0xdc/0x1f0 pseries_devicetree_update+0x2d0/0x510 post_mobility_fixup+0x7c/0xf0 migration_store+0xa4/0xc0 kobj_attr_store+0x30/0x60 sysfs_kf_write+0x64/0xa0 kernfs_fop_write+0x16c/0x240 __vfs_write+0x40/0x200 vfs_write+0xc8/0x240 ksys_write+0x5c/0x100 system_call+0x58/0x6c Fixes: 5d88aa85 ("powerpc/pseries: Update CPU maps when device tree is updated") Cc: stable@vger.kernel.org # v3.10+ Signed-off-by: NMichael Bringmann <mwb@linux.vnet.ibm.com> Signed-off-by: NMichael Ellerman <mpe@ellerman.id.au>
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- 20 9月, 2018 3 次提交
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由 Thiago Jung Bauermann 提交于
scan_pkey_feature() uses of_property_read_u32_array() to read the ibm,processor-storage-keys property and calls be32_to_cpu() on the value it gets. The problem is that of_property_read_u32_array() already returns the value converted to the CPU byte order. The value of pkeys_total ends up more or less sane because there's a min() call in pkey_initialize() which reduces pkeys_total to 32. So in practice the kernel ignores the fact that the hypervisor reserved one key for itself (the device tree advertises 31 keys in my test VM). This is wrong, but the effect in practice is that when a process tries to allocate the 32nd key, it gets an -EINVAL error instead of -ENOSPC which would indicate that there aren't any keys available Fixes: cf43d3b2 ("powerpc: Enable pkey subsystem") Cc: stable@vger.kernel.org # v4.16+ Signed-off-by: NThiago Jung Bauermann <bauerman@linux.ibm.com> Signed-off-by: NMichael Ellerman <mpe@ellerman.id.au>
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由 Christophe Leroy 提交于
On little endian platforms, csum_ipv6_magic() keeps len and proto in CPU byte order. This generates a bad results leading to ICMPv6 packets from other hosts being dropped by powerpc64le platforms. In order to fix this, len and proto should be converted to network byte order ie bigendian byte order. However checksumming 0x12345678 and 0x56341278 provide the exact same result so it is enough to rotate the sum of len and proto by 1 byte. PPC32 only support bigendian so the fix is needed for PPC64 only Fixes: e9c4943a ("powerpc: Implement csum_ipv6_magic in assembly") Reported-by: NJianlin Shi <jishi@redhat.com> Reported-by: NXin Long <lucien.xin@gmail.com> Cc: <stable@vger.kernel.org> # 4.18+ Signed-off-by: NChristophe Leroy <christophe.leroy@c-s.fr> Tested-by: NXin Long <lucien.xin@gmail.com> Signed-off-by: NMichael Ellerman <mpe@ellerman.id.au>
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由 Alexey Kardashevskiy 提交于
mpe: This was fixed originally in commit d3d4ffaa ("powerpc/powernv/ioda2: Reduce upper limit for DMA window size"), but contrary to what the merge commit says was inadvertently lost by me in commit ce57c661 ("Merge branch 'topic/ppc-kvm' into next") which brought in changes that moved the code to a new file. So reapply it to the new file. Original commit message follows: We use PHB in mode1 which uses bit 59 to select a correct DMA window. However there is mode2 which uses bits 59:55 and allows up to 32 DMA windows per a PE. Even though documentation does not clearly specify that, it seems that the actual hardware does not support bits 59:55 even in mode1, in other words we can create a window as big as 1<<58 but DMA simply won't work. This reduces the upper limit from 59 to 55 bits to let the userspace know about the hardware limits. Fixes: ce57c661 ("Merge branch 'topic/ppc-kvm' into next") Signed-off-by: NAlexey Kardashevskiy <aik@ozlabs.ru> Signed-off-by: NMichael Ellerman <mpe@ellerman.id.au>
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- 18 9月, 2018 1 次提交
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由 Michael Neuling 提交于
This stops us from doing code patching in init sections after they've been freed. In this chain: kvm_guest_init() -> kvm_use_magic_page() -> fault_in_pages_readable() -> __get_user() -> __get_user_nocheck() -> barrier_nospec(); We have a code patching location at barrier_nospec() and kvm_guest_init() is an init function. This whole chain gets inlined, so when we free the init section (hence kvm_guest_init()), this code goes away and hence should no longer be patched. We seen this as userspace memory corruption when using a memory checker while doing partition migration testing on powervm (this starts the code patching post migration via /sys/kernel/mobility/migration). In theory, it could also happen when using /sys/kernel/debug/powerpc/barrier_nospec. Cc: stable@vger.kernel.org # 4.13+ Signed-off-by: NMichael Neuling <mikey@neuling.org> Reviewed-by: NNicholas Piggin <npiggin@gmail.com> Reviewed-by: NChristophe Leroy <christophe.leroy@c-s.fr> Signed-off-by: NMichael Ellerman <mpe@ellerman.id.au>
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- 17 9月, 2018 1 次提交
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由 Michael Neuling 提交于
When we come into the softpatch handler (0x1500), we use r11 to store the HSRR0 for later use by the denorm handler. We also use the softpatch handler for the TM workarounds for POWER9. Unfortunately, in kvmppc_interrupt_hv we later store r11 out to the vcpu assuming it's still what we got from userspace. This causes r11 to be corrupted in the VCPU and hence when we restore the guest, we get a corrupted r11. We've seen this when running TM tests inside guests on P9. This fixes the problem by only touching r11 in the denorm case. Fixes: 4bb3c7a0 ("KVM: PPC: Book3S HV: Work around transactional memory bugs in POWER9") Cc: <stable@vger.kernel.org> # 4.17+ Test-by: NSuraj Jitindar Singh <sjitindarsingh@gmail.com> Reviewed-by: NPaul Mackerras <paulus@ozlabs.org> Signed-off-by: NMichael Neuling <mikey@neuling.org> Signed-off-by: NMichael Ellerman <mpe@ellerman.id.au>
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- 10 9月, 2018 1 次提交
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由 Linus Torvalds 提交于
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- 09 9月, 2018 10 次提交
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip由 Linus Torvalds 提交于
Pull x86 fixes from Thomas Gleixner: "A set of fixes for x86: - Prevent multiplication result truncation on 32bit. Introduced with the early timestamp reworrk. - Ensure microcode revision storage to be consistent under all circumstances - Prevent write tearing of PTEs - Prevent confusion of user and kernel reegisters when dumping fatal signals verbosely - Make an error return value in a failure path of the vector allocation negative. Returning EINVAL might the caller assume success and causes further wreckage. - A trivial kernel doc warning fix" * 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/mm: Use WRITE_ONCE() when setting PTEs x86/apic/vector: Make error return value negative x86/process: Don't mix user/kernel regs in 64bit __show_regs() x86/tsc: Prevent result truncation on 32bit x86: Fix kernel-doc atomic.h warnings x86/microcode: Update the new microcode revision unconditionally x86/microcode: Make sure boot_cpu_data.microcode is up-to-date
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip由 Linus Torvalds 提交于
Pull timekeeping fixes from Thomas Gleixner: "Two fixes for timekeeping: - Revert to the previous kthread based update, which is unfortunately required due to lock ordering issues. The removal caused boot failures on old Core2 machines. Add a proper comment why the thread needs to stay to prevent accidental removal in the future. - Fix a silly typo in a function declaration" * 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: clocksource: Revert "Remove kthread" timekeeping: Fix declaration of read_persistent_wall_and_boot_offset()
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip由 Linus Torvalds 提交于
Pull irqchip fix from Thomas Gleixner: "A single fix to prevent allocating excessive memory in the GIC/ITS driver. While the subject of the patch might suggest otherwise this is a real fix as some SoCs exceed the memory allocation limits and fail to boot" * 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: irqchip/gic-v3-its: Cap lpi_id_bits to reduce memory footprint
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip由 Linus Torvalds 提交于
Pull cpu hotplug fixes from Thomas Gleixner: "Two fixes for the hotplug state machine code: - Move the misplaces smb() in the hotplug thread function to the proper place, otherwise a half update control struct could be observed - Prevent state corruption on error rollback, which causes the state to advance by one and as a consequence skip it in the bringup sequence" * 'smp-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: cpu/hotplug: Prevent state corruption on error rollback cpu/hotplug: Adjust misplaced smb() in cpuhp_thread_fun()
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git://git.kernel.org/pub/scm/linux/kernel/git/tytso/random由 Linus Torvalds 提交于
Pull random driver fix from Ted Ts'o: "Fix things so the choice of whether or not to trust RDRAND to initialize the CRNG is configurable via the boot option random.trust_cpu={on,off}" * tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/random: random: make CPU trust a boot parameter
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由 Linus Torvalds 提交于
Merge tag 'kbuild-fixes-v4.19' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild Pull Kbuild fixes from Masahiro Yamada: - make setlocalversion more robust about -dirty check - loosen the pkg-config requirement for Kconfig - change missing depmod to a warning from an error - warn modules_install when System.map is missing * tag 'kbuild-fixes-v4.19' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: kbuild: modules_install: warn when missing System.map file kbuild: make missing $DEPMOD a Warning instead of an Error kconfig: do not require pkg-config on make {menu,n}config kconfig: remove a spurious self-assignment scripts/setlocalversion: git: Make -dirty check more robust
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由 Randy Dunlap 提交于
If there is no System.map file for "make modules_install", scripts/depmod.sh will silently exit with success, having done nothing. Since this is an unexpected situation, change it to report a Warning for the missing file. The behavior is not changed except for the Warning message. The (previous) silent success and new Warning can be reproduced by: $ make mrproper; make defconfig $ make modules; make modules_install and since System.map is produced by "make vmlinux", the steps above omit producing the System.map file. Reported-by: NMasahiro Yamada <yamada.masahiro@socionext.com> Signed-off-by: NRandy Dunlap <rdunlap@infradead.org> Signed-off-by: NMasahiro Yamada <yamada.masahiro@socionext.com>
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git://git.kernel.org/pub/scm/virt/kvm/kvm由 Linus Torvalds 提交于
Pull KVM fixes from Radim Krčmář: "ARM: - Fix a VFP corruption in 32-bit guest - Add missing cache invalidation for CoW pages - Two small cleanups s390: - Fallout from the hugetlbfs support: pfmf interpretion and locking - VSIE: fix keywrapping for nested guests PPC: - Fix a bug where pages might not get marked dirty, causing guest memory corruption on migration - Fix a bug causing reads from guest memory to use the wrong guest real address for very large HPT guests (>256G of memory), leading to failures in instruction emulation. x86: - Fix out of bound access from malicious pv ipi hypercalls (introduced in rc1) - Fix delivery of pending interrupts when entering a nested guest, preventing arbitrarily late injection - Sanitize kvm_stat output after destroying a guest - Fix infinite loop when emulating a nested guest page fault and improve the surrounding emulation code - Two minor cleanups" * tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (28 commits) KVM: LAPIC: Fix pv ipis out-of-bounds access KVM: nVMX: Fix loss of pending IRQ/NMI before entering L2 arm64: KVM: Remove pgd_lock KVM: Remove obsolete kvm_unmap_hva notifier backend arm64: KVM: Only force FPEXC32_EL2.EN if trapping FPSIMD KVM: arm/arm64: Clean dcache to PoC when changing PTE due to CoW KVM: s390: Properly lock mm context allow_gmap_hpage_1m setting KVM: s390: vsie: copy wrapping keys to right place KVM: s390: Fix pfmf and conditional skey emulation tools/kvm_stat: re-animate display of dead guests tools/kvm_stat: indicate dead guests as such tools/kvm_stat: handle guest removals more gracefully tools/kvm_stat: don't reset stats when setting PID filter for debugfs tools/kvm_stat: fix updates for dead guests tools/kvm_stat: fix handling of invalid paths in debugfs provider tools/kvm_stat: fix python3 issues KVM: x86: Unexport x86_emulate_instruction() KVM: x86: Rename emulate_instruction() to kvm_emulate_instruction() KVM: x86: Do not re-{try,execute} after failed emulation in L2 KVM: x86: Default to not allowing emulation retry in kvm_mmu_page_fault ...
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git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc由 Linus Torvalds 提交于
Pull ARM SoC fixes from Olof Johansson: "A few more fixes who have trickled in: - MMC bus width fixup for some Allwinner platforms - Fix for NULL deref in ti-aemif when no platform data is passed in - Fix div by 0 in SCMI code - Add a missing module alias in a new RPi driver" * tag 'armsoc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: memory: ti-aemif: fix a potential NULL-pointer dereference firmware: arm_scmi: fix divide by zero when sustained_perf_level is zero hwmon: rpi: add module alias to raspberrypi-hwmon arm64: allwinner: dts: h6: fix Pine H64 MMC bus width
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由 Olof Johansson 提交于
Merge tag 'sunxi-fixes-for-4.19' of https://git.kernel.org/pub/scm/linux/kernel/git/sunxi/linux into fixes Allwinner fixes for 4.19 Just one fix for H6 mmc on the Pine H64: the mmc bus width was missing from the device tree. This was added in 4.19-rc1. * tag 'sunxi-fixes-for-4.19' of https://git.kernel.org/pub/scm/linux/kernel/git/sunxi/linux: arm64: allwinner: dts: h6: fix Pine H64 MMC bus width Signed-off-by: NOlof Johansson <olof@lixom.net>
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- 08 9月, 2018 15 次提交
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由 Nadav Amit 提交于
When page-table entries are set, the compiler might optimize their assignment by using multiple instructions to set the PTE. This might turn into a security hazard if the user somehow manages to use the interim PTE. L1TF does not make our lives easier, making even an interim non-present PTE a security hazard. Using WRITE_ONCE() to set PTEs and friends should prevent this potential security hazard. I skimmed the differences in the binary with and without this patch. The differences are (obviously) greater when CONFIG_PARAVIRT=n as more code optimizations are possible. For better and worse, the impact on the binary with this patch is pretty small. Skimming the code did not cause anything to jump out as a security hazard, but it seems that at least move_soft_dirty_pte() caused set_pte_at() to use multiple writes. Signed-off-by: NNadav Amit <namit@vmware.com> Signed-off-by: NThomas Gleixner <tglx@linutronix.de> Acked-by: NPeter Zijlstra (Intel) <peterz@infradead.org> Cc: Dave Hansen <dave.hansen@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Josh Poimboeuf <jpoimboe@redhat.com> Cc: Michal Hocko <mhocko@suse.com> Cc: Vlastimil Babka <vbabka@suse.cz> Cc: Sean Christopherson <sean.j.christopherson@intel.com> Cc: Andy Lutomirski <luto@kernel.org> Cc: stable@vger.kernel.org Link: https://lkml.kernel.org/r/20180902181451.80520-1-namit@vmware.com
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由 Thomas Gleixner 提交于
activate_managed() returns EINVAL instead of -EINVAL in case of error. While this is unlikely to happen, the positive return value would cause further malfunction at the call site. Fixes: 2db1f959 ("x86/vector: Handle managed interrupts proper") Signed-off-by: NThomas Gleixner <tglx@linutronix.de> Cc: stable@vger.kernel.org
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git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux由 Linus Torvalds 提交于
Pull i2c fixes from Wolfram Sang: - bugfixes for uniphier, i801, and xiic drivers - ID removal (never produced) for imx - one MAINTAINER addition * 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux: i2c: xiic: Record xilinx i2c with Zynq fragment i2c: xiic: Make the start and the byte count write atomic i2c: i801: fix DNV's SMBCTRL register offset i2c: imx-lpi2c: Remove mx8dv compatible entry dt-bindings: imx-lpi2c: Remove mx8dv compatible entry i2c: uniphier-f: issue STOP only for last message or I2C_M_STOP i2c: uniphier: issue STOP only for last message or I2C_M_STOP
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git://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arc由 Linus Torvalds 提交于
Pull ARC updates from Vineet Gupta: - Fix for atomic_fetch_#op [Will Deacon] - Enable per device IOC [Eugeniy Paltsev] - Remove redundant gcc version checks [Masahiro Yamada] - Miscll platform config/DT updates [Alexey Brodkin] * tag 'arc-4.19-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arc: ARC: don't check for HIGHMEM pages in arch_dma_alloc ARC: IOC: panic if both IOC and ZONE_HIGHMEM enabled ARC: dma [IOC] Enable per device io coherency ARC: dma [IOC]: mark DMA devices connected as dma-coherent ARC: atomics: unbork atomic_fetch_##op() arc: remove redundant GCC version checks ARC: sort Kconfig ARC: cleanup show_faulting_vma() ARC: [plat-axs*]: Enable SWAP ARC: [plat-axs*/plat-hsdk]: Allow U-Boot to pass MAC-address to the kernel ARC: configs: cleanup
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由 David Howells 提交于
Fix the cell specification mechanism to allow cells to be pre-created without having to specify at least one address (the addresses will be upcalled for). This allows the cell information preload service to avoid the need to issue loads of DNS lookups during boot to get the addresses for each cell (500+ lookups for the 'standard' cell list[*]). The lookups can be done later as each cell is accessed through the filesystem. Also remove the print statement that prints a line every time a new cell is added. [*] There are 144 cells in the list. Each cell is first looked up for an SRV record, and if that fails, for an AFSDB record. These get a list of server names, each of which then has to be looked up to get the addresses for that server. E.g.: dig srv _afs3-vlserver._udp.grand.central.org Signed-off-by: NDavid Howells <dhowells@redhat.com> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/shli/md由 Linus Torvalds 提交于
Pull MD fixes from Shaohua Li: - Fix a locking issue for md-cluster (Guoqing) - Fix a sync crash for raid10 (Ni) - Fix a reshape bug with raid5 cache enabled (me) * tag 'md/4.19-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/shli/md: md-cluster: release RESYNC lock after the last resync message RAID10 BUG_ON in raise_barrier when force is true and conf->barrier is 0 md/raid5-cache: disable reshape completely
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https://github.com/ceph/ceph-client由 Linus Torvalds 提交于
Pull ceph fixes from Ilya Dryomov: "Two rbd patches to complete support for images within namespaces that went into -rc1 and a use-after-free fix. The rbd changes have been sitting in a branch for quite a while but couldn't be included into the -rc1 pull request because of a pending wire protocol backwards compatibility fixup that only got committed early this week" * tag 'ceph-for-4.19-rc3' of https://github.com/ceph/ceph-client: rbd: support cloning across namespaces rbd: factor out get_parent_info() ceph: avoid a use-after-free in ceph_destroy_options()
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git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs由 Linus Torvalds 提交于
Pull fsnotify fix from Jan Kara: "A small fsnotify fix from Amir" * tag 'for_v4.19-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs: fsnotify: fix ignore mask logic in fsnotify()
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git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux由 Linus Torvalds 提交于
Pull arm64 fix from Will Deacon: "Just one small fix here, preventing a VM_WARN_ON when a !present PMD/PUD is "freed" as part of a huge ioremap() operation. The correct behaviour is to skip the free silently in this case, which is a little weird (the function is a bit of a misnomer), but it follows the x86 implementation" * tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux: arm64: fix erroneous warnings in page freeing functions
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git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm由 Linus Torvalds 提交于
Pull ACPI fixes from Rafael Wysocki: "These fix a regression from the 4.18 cycle in the ACPI driver for Intel SoCs (LPSS) and prevent dmi_check_system() from being called on non-x86 systems in the ACPI core. Specifics: - Fix a power management regression in the ACPI driver for Intel SoCs (LPSS) introduced by a system-wide suspend/resume fix during the 4.18 cycle (Zhang Rui). - Prevent dmi_check_system() from being called on non-x86 systems in the ACPI core (Jean Delvare)" * tag 'acpi-4.19-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: ACPI / LPSS: Force LPSS quirks on boot ACPI / bus: Only call dmi_check_system() on X86
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git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound由 Linus Torvalds 提交于
Pull sound fixes from Takashi Iwai: "Just a few small fixes: - a fix for the recursive work cancellation in a specific HD-audio operation mode - a fix for potentially uninitialized memory access via rawmidi - the register bit access fixes for ASoC HD-audio" * tag 'sound-4.19-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: ALSA: hda: Fix several mismatch for register mask and value ALSA: rawmidi: Initialize allocated buffers ALSA: hda - Fix cancel_work_sync() stall from jackpoll work
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由 Wanpeng Li 提交于
Dan Carpenter reported that the untrusted data returns from kvm_register_read() results in the following static checker warning: arch/x86/kvm/lapic.c:576 kvm_pv_send_ipi() error: buffer underflow 'map->phys_map' 's32min-s32max' KVM guest can easily trigger this by executing the following assembly sequence in Ring0: mov $10, %rax mov $0xFFFFFFFF, %rbx mov $0xFFFFFFFF, %rdx mov $0, %rsi vmcall As this will cause KVM to execute the following code-path: vmx_handle_exit() -> handle_vmcall() -> kvm_emulate_hypercall() -> kvm_pv_send_ipi() which will reach out-of-bounds access. This patch fixes it by adding a check to kvm_pv_send_ipi() against map->max_apic_id, ignoring destinations that are not present and delivering the rest. We also check whether or not map->phys_map[min + i] is NULL since the max_apic_id is set to the max apic id, some phys_map maybe NULL when apic id is sparse, especially kvm unconditionally set max_apic_id to 255 to reserve enough space for any xAPIC ID. Reported-by: NDan Carpenter <dan.carpenter@oracle.com> Reviewed-by: NLiran Alon <liran.alon@oracle.com> Cc: Paolo Bonzini <pbonzini@redhat.com> Cc: Radim Krčmář <rkrcmar@redhat.com> Cc: Liran Alon <liran.alon@oracle.com> Cc: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: NWanpeng Li <wanpengli@tencent.com> [Add second "if (min > map->max_apic_id)" to complete the fix. -Radim] Signed-off-by: NRadim Krčmář <rkrcmar@redhat.com>
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由 Liran Alon 提交于
Consider the case L1 had a IRQ/NMI event until it executed VMLAUNCH/VMRESUME which wasn't delivered because it was disallowed (e.g. interrupts disabled). When L1 executes VMLAUNCH/VMRESUME, L0 needs to evaluate if this pending event should cause an exit from L2 to L1 or delivered directly to L2 (e.g. In case L1 don't intercept EXTERNAL_INTERRUPT). Usually this would be handled by L0 requesting a IRQ/NMI window by setting VMCS accordingly. However, this setting was done on VMCS01 and now VMCS02 is active instead. Thus, when L1 executes VMLAUNCH/VMRESUME we force L0 to perform pending event evaluation by requesting a KVM_REQ_EVENT. Note that above scenario exists when L1 KVM is about to enter L2 but requests an "immediate-exit". As in this case, L1 will disable-interrupts and then send a self-IPI before entering L2. Reviewed-by: NNikita Leshchenko <nikita.leshchenko@oracle.com> Co-developed-by: NSean Christopherson <sean.j.christopherson@intel.com> Signed-off-by: NSean Christopherson <sean.j.christopherson@intel.com> Signed-off-by: NLiran Alon <liran.alon@oracle.com> Signed-off-by: NRadim Krčmář <rkrcmar@redhat.com>
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由 Radim Krčmář 提交于
Merge tag 'kvm-arm-fixes-for-v4.19-v2' of git://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm Fixes for KVM/ARM for Linux v4.19 v2: - Fix a VFP corruption in 32-bit guest - Add missing cache invalidation for CoW pages - Two small cleanups
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git://git.kernel.org/pub/scm/linux/kernel/git/kvms390/linux由 Radim Krčmář 提交于
KVM: s390: Fixes for 4.19 - Fallout from the hugetlbfs support: pfmf interpretion and locking - VSIE: fix keywrapping for nested guests
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- 07 9月, 2018 5 次提交
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由 Steven Price 提交于
The lock has never been used and the page tables are protected by mmu_lock in struct kvm. Reviewed-by: NSuzuki K Poulose <suzuki.poulose@arm.com> Signed-off-by: NSteven Price <steven.price@arm.com> Signed-off-by: NMarc Zyngier <marc.zyngier@arm.com> Signed-off-by: NChristoffer Dall <christoffer.dall@arm.com>
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由 Marc Zyngier 提交于
kvm_unmap_hva is long gone, and we only have kvm_unmap_hva_range to deal with. Drop the now obsolete code. Fixes: fb1522e0 ("KVM: update to new mmu_notifier semantic v2") Cc: James Hogan <jhogan@kernel.org> Reviewed-by: NPaolo Bonzini <pbonzini@redhat.com> Signed-off-by: NMarc Zyngier <marc.zyngier@arm.com> Signed-off-by: NChristoffer Dall <christoffer.dall@arm.com>
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由 Marc Zyngier 提交于
If trapping FPSIMD in the context of an AArch32 guest, it is critical to set FPEXC32_EL2.EN to 1 so that the trapping is taken to EL2 and not EL1. Conversely, it is just as critical *not* to set FPEXC32_EL2.EN to 1 if we're not going to trap FPSIMD, as we then corrupt the existing VFP state. Moving the call to __activate_traps_fpsimd32 to the point where we know for sure that we are going to trap ensures that we don't set that bit spuriously. Fixes: e6b673b7 ("KVM: arm64: Optimise FPSIMD handling to reduce guest/host thrashing") Cc: stable@vger.kernel.org # v4.18 Cc: Dave Martin <dave.martin@arm.com> Reported-by: NAlexander Graf <agraf@suse.de> Tested-by: NAlexander Graf <agraf@suse.de> Signed-off-by: NMarc Zyngier <marc.zyngier@arm.com> Signed-off-by: NChristoffer Dall <christoffer.dall@arm.com>
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由 Marc Zyngier 提交于
When triggering a CoW, we unmap the RO page via an MMU notifier (invalidate_range_start), and then populate the new PTE using another one (change_pte). In the meantime, we'll have copied the old page into the new one. The problem is that the data for the new page is sitting in the cache, and should the guest have an uncached mapping to that page (or its MMU off), following accesses will bypass the cache. In a way, this is similar to what happens on a translation fault: We need to clean the page to the PoC before mapping it. So let's just do that. This fixes a KVM unit test regression observed on a HiSilicon platform, and subsequently reproduced on Seattle. Fixes: a9c0e12e ("KVM: arm/arm64: Only clean the dcache on translation fault") Cc: stable@vger.kernel.org # v4.16+ Reported-by: NMike Galbraith <efault@gmx.de> Signed-off-by: NMarc Zyngier <marc.zyngier@arm.com> Signed-off-by: NChristoffer Dall <christoffer.dall@arm.com>
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由 Michal Simek 提交于
Include xilinx soft i2c controller to Zynq fragment to make clear who is responsible for it. Signed-off-by: NMichal Simek <michal.simek@xilinx.com> Signed-off-by: NWolfram Sang <wsa@the-dreams.de>
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