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2021-07-29ARM: riscpc: Fix fall-through warning for ClangGustavo A. R. Silva1-0/+1
Fix the following fallthrough warning: arch/arm/mach-rpc/riscpc.c:52:2: warning: unannotated fall-through between switch labels [-Wimplicit-fallthrough] default: ^ arch/arm/mach-rpc/riscpc.c:52:2: note: insert 'break;' to avoid fall-through default: ^ break; Reported-by: kernel test robot <lkp@intel.com> Link: https://lore.kernel.org/lkml/202107260355.bF00i5bi-lkp@intel.com/ Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>
2021-07-29Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvmLinus Torvalds12-54/+58
Pull kvm fixes from Paolo Bonzini: "ARM: - Fix MTE shared page detection - Enable selftest's use of PMU registers when asked to s390: - restore 5.13 debugfs names x86: - fix sizes for vcpu-id indexed arrays - fixes for AMD virtualized LAPIC (AVIC) - other small bugfixes Generic: - access tracking performance test - dirty_log_perf_test command line parsing fix - Fix selftest use of obsolete pthread_yield() in favour of sched_yield() - use cpu_relax when halt polling - fixed missing KVM_CLEAR_DIRTY_LOG compat ioctl" * tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: KVM: add missing compat KVM_CLEAR_DIRTY_LOG KVM: use cpu_relax when halt polling KVM: SVM: use vmcb01 in svm_refresh_apicv_exec_ctrl KVM: SVM: tweak warning about enabled AVIC on nested entry KVM: SVM: svm_set_vintr don't warn if AVIC is active but is about to be deactivated KVM: s390: restore old debugfs names KVM: SVM: delay svm_vcpu_init_msrpm after svm->vmcb is initialized KVM: selftests: Introduce access_tracking_perf_test KVM: selftests: Fix missing break in dirty_log_perf_test arg parsing x86/kvm: fix vcpu-id indexed array sizes KVM: x86: Check the right feature bit for MSR_KVM_ASYNC_PF_ACK access docs: virt: kvm: api.rst: replace some characters KVM: Documentation: Fix KVM_CAP_ENFORCE_PV_FEATURE_CPUID name KVM: nSVM: Swap the parameter order for svm_copy_vmrun_state()/svm_copy_vmloadsave_state() KVM: nSVM: Rename nested_svm_vmloadsave() to svm_copy_vmloadsave_state() KVM: arm64: selftests: get-reg-list: actually enable pmu regs in pmu sublist KVM: selftests: change pthread_yield to sched_yield KVM: arm64: Fix detection of shared VMAs on guest fault
2021-07-29powerpc/vdso: Don't use r30 to avoid breaking Go langMichael Ellerman1-0/+7
The Go runtime uses r30 for some special value called 'g'. It assumes that value will remain unchanged even when calling VDSO functions. Although r30 is non-volatile across function calls, the callee is free to use it, as long as the callee saves the value and restores it before returning. It used to be true by accident that the VDSO didn't use r30, because the VDSO was hand-written asm. When we switched to building the VDSO from C the compiler started using r30, at least in some builds, leading to crashes in Go. eg: ~/go/src$ ./all.bash Building Go cmd/dist using /usr/lib/go-1.16. (go1.16.2 linux/ppc64le) Building Go toolchain1 using /usr/lib/go-1.16. go build os/exec: /usr/lib/go-1.16/pkg/tool/linux_ppc64le/compile: signal: segmentation fault go build reflect: /usr/lib/go-1.16/pkg/tool/linux_ppc64le/compile: signal: segmentation fault go tool dist: FAILED: /usr/lib/go-1.16/bin/go install -gcflags=-l -tags=math_big_pure_go compiler_bootstrap bootstrap/cmd/...: exit status 1 There are patches in flight to fix Go[1], but until they are released and widely deployed we can workaround it in the VDSO by avoiding use of r30. Note this only works with GCC, clang does not support -ffixed-rN. 1: https://go-review.googlesource.com/c/go/+/328110 Fixes: ab037dd87a2f ("powerpc/vdso: Switch VDSO to generic C implementation.") Cc: stable@vger.kernel.org # v5.11+ Reported-by: Paul Menzel <pmenzel@molgen.mpg.de> Tested-by: Paul Menzel <pmenzel@molgen.mpg.de> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20210729131244.2595519-1-mpe@ellerman.id.au
2021-07-29powerpc/pseries: Fix regression while building external modulesSrikar Dronamraju1-1/+1
With commit c9f3401313a5 ("powerpc: Always enable queued spinlocks for 64s, disable for others") CONFIG_PPC_QUEUED_SPINLOCKS is always enabled on ppc64le, external modules that use spinlock APIs are failing. ERROR: modpost: GPL-incompatible module XXX.ko uses GPL-only symbol 'shared_processor' Before the above commit, modules were able to build without any issues. Also this problem is not seen on other architectures. This problem can be workaround if CONFIG_UNINLINE_SPIN_UNLOCK is enabled in the config. However CONFIG_UNINLINE_SPIN_UNLOCK is not enabled by default and only enabled in certain conditions like CONFIG_DEBUG_SPINLOCKS is set in the kernel config. #include <linux/module.h> spinlock_t spLock; static int __init spinlock_test_init(void) { spin_lock_init(&spLock); spin_lock(&spLock); spin_unlock(&spLock); return 0; } static void __exit spinlock_test_exit(void) { printk("spinlock_test unloaded\n"); } module_init(spinlock_test_init); module_exit(spinlock_test_exit); MODULE_DESCRIPTION ("spinlock_test"); MODULE_LICENSE ("non-GPL"); MODULE_AUTHOR ("Srikar Dronamraju"); Given that spin locks are one of the basic facilities for module code, this effectively makes it impossible to build/load almost any non GPL modules on ppc64le. This was first reported at https://github.com/openzfs/zfs/issues/11172 Currently shared_processor is exported as GPL only symbol. Fix this for parity with other architectures by exposing shared_processor to non-GPL modules too. Fixes: 14c73bd344da ("powerpc/vcpu: Assume dedicated processors as non-preempt") Cc: stable@vger.kernel.org # v5.5+ Reported-by: marc.c.dionne@gmail.com Signed-off-by: Srikar Dronamraju <srikar@linux.vnet.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20210729060449.292780-1-srikar@linux.vnet.ibm.com
2021-07-28alpha: register early reserved memory in memblockMike Rapoport1-6/+7
The memory reserved by console/PALcode or non-volatile memory is not added to memblock.memory. Since commit fa3354e4ea39 (mm: free_area_init: use maximal zone PFNs rather than zone sizes) the initialization of the memory map relies on the accuracy of memblock.memory to properly calculate zone sizes. The holes in memblock.memory caused by absent regions reserved by the firmware cause incorrect initialization of struct pages which leads to BUG() during the initial page freeing: BUG: Bad page state in process swapper pfn:2ffc53 page:fffffc000ecf14c0 refcount:0 mapcount:1 mapping:0000000000000000 index:0x0 flags: 0x0() raw: 0000000000000000 0000000000000000 0000000000000000 0000000000000000 raw: 0000000000000000 0000000000000000 0000000000000000 0000000000000000 page dumped because: nonzero mapcount Modules linked in: CPU: 0 PID: 0 Comm: swapper Not tainted 5.7.0-03841-gfa3354e4ea39-dirty #26 fffffc0001b5bd68 fffffc0001b5be80 fffffc00011cd148 fffffc000ecf14c0 fffffc00019803df fffffc0001b5be80 fffffc00011ce340 fffffc000ecf14c0 0000000000000000 fffffc0001b5be80 fffffc0001b482c0 fffffc00027d6618 fffffc00027da7d0 00000000002ff97a 0000000000000000 fffffc0001b5be80 fffffc00011d1abc fffffc000ecf14c0 fffffc0002d00000 fffffc0001b5be80 fffffc0001b2350c 0000000000300000 fffffc0001b48298 fffffc0001b482c0 Trace: [<fffffc00011cd148>] bad_page+0x168/0x1b0 [<fffffc00011ce340>] free_pcp_prepare+0x1e0/0x290 [<fffffc00011d1abc>] free_unref_page+0x2c/0xa0 [<fffffc00014ee5f0>] cmp_ex_sort+0x0/0x30 [<fffffc00014ee5f0>] cmp_ex_sort+0x0/0x30 [<fffffc000101001c>] _stext+0x1c/0x20 Fix this by registering the reserved ranges in memblock.memory. Link: https://lore.kernel.org/lkml/20210726192311.uffqnanxw3ac5wwi@ivybridge Fixes: fa3354e4ea39 ("mm: free_area_init: use maximal zone PFNs rather than zone sizes") Reported-by: Matt Turner <mattst88@gmail.com> Cc: <stable@vger.kernel.org> Signed-off-by: Mike Rapoport <rppt@linux.ibm.com> Signed-off-by: Matt Turner <mattst88@gmail.com>
2021-07-29Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpfDavid S. Miller11-0/+60
Daniel Borkmann says: ==================== pull-request: bpf 2021-07-29 The following pull-request contains BPF updates for your *net* tree. We've added 9 non-merge commits during the last 14 day(s) which contain a total of 20 files changed, 446 insertions(+), 138 deletions(-). The main changes are: 1) Fix UBSAN out-of-bounds splat for showing XDP link fdinfo, from Lorenz Bauer. 2) Fix insufficient Spectre v4 mitigation in BPF runtime, from Daniel Borkmann, Piotr Krysiuk and Benedict Schlueter. 3) Batch of fixes for BPF sockmap found under stress testing, from John Fastabend. ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
2021-07-29bpf: Introduce BPF nospec instruction for mitigating Spectre v4Daniel Borkmann11-0/+60
In case of JITs, each of the JIT backends compiles the BPF nospec instruction /either/ to a machine instruction which emits a speculation barrier /or/ to /no/ machine instruction in case the underlying architecture is not affected by Speculative Store Bypass or has different mitigations in place already. This covers both x86 and (implicitly) arm64: In case of x86, we use 'lfence' instruction for mitigation. In case of arm64, we rely on the firmware mitigation as controlled via the ssbd kernel parameter. Whenever the mitigation is enabled, it works for all of the kernel code with no need to provide any additional instructions here (hence only comment in arm64 JIT). Other archs can follow as needed. The BPF nospec instruction is specifically targeting Spectre v4 since i) we don't use a serialization barrier for the Spectre v1 case, and ii) mitigation instructions for v1 and v4 might be different on some archs. The BPF nospec is required for a future commit, where the BPF verifier does annotate intermediate BPF programs with speculation barriers. Co-developed-by: Piotr Krysiuk <piotras@gmail.com> Co-developed-by: Benedict Schlueter <benedict.schlueter@rub.de> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Signed-off-by: Piotr Krysiuk <piotras@gmail.com> Signed-off-by: Benedict Schlueter <benedict.schlueter@rub.de> Acked-by: Alexei Starovoitov <ast@kernel.org>
2021-07-27KVM: SVM: use vmcb01 in svm_refresh_apicv_exec_ctrlMaxim Levitsky1-1/+1
Currently when SVM is enabled in guest CPUID, AVIC is inhibited as soon as the guest CPUID is set. AVIC happens to be fully disabled on all vCPUs by the time any guest entry starts (if after migration the entry can be nested). The reason is that currently we disable avic right away on vCPU from which the kvm_request_apicv_update was called and for this case, it happens to be called on all vCPUs (by svm_vcpu_after_set_cpuid). After we stop doing this, AVIC will end up being disabled only when KVM_REQ_APICV_UPDATE is processed which is after we done switching to the nested guest. Fix this by just using vmcb01 in svm_refresh_apicv_exec_ctrl for avic (which is a right thing to do anyway). Signed-off-by: Maxim Levitsky <mlevitsk@redhat.com> Message-Id: <20210713142023.106183-4-mlevitsk@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2021-07-27KVM: SVM: tweak warning about enabled AVIC on nested entryMaxim Levitsky1-1/+1
It is possible that AVIC was requested to be disabled but not yet disabled, e.g if the nested entry is done right after svm_vcpu_after_set_cpuid. Signed-off-by: Maxim Levitsky <mlevitsk@redhat.com> Message-Id: <20210713142023.106183-3-mlevitsk@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2021-07-27KVM: SVM: svm_set_vintr don't warn if AVIC is active but is about to be ↵Maxim Levitsky1-2/+5
deactivated It is possible for AVIC inhibit and AVIC active state to be mismatched. Currently we disable AVIC right away on vCPU which started the AVIC inhibit request thus this warning doesn't trigger but at least in theory, if svm_set_vintr is called at the same time on multiple vCPUs, the warning can happen. Signed-off-by: Maxim Levitsky <mlevitsk@redhat.com> Message-Id: <20210713142023.106183-2-mlevitsk@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2021-07-27KVM: s390: restore old debugfs namesChristian Borntraeger3-27/+27
commit bc9e9e672df9 ("KVM: debugfs: Reuse binary stats descriptors") did replace the old definitions with the binary ones. While doing that it missed that some files are names different than the counters. This is especially important for kvm_stat which does have special handling for counters named instruction_*. Fixes: commit bc9e9e672df9 ("KVM: debugfs: Reuse binary stats descriptors") CC: Jing Zhang <jingzhangos@google.com> Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com> Message-Id: <20210726150108.5603-1-borntraeger@de.ibm.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2021-07-27KVM: SVM: delay svm_vcpu_init_msrpm after svm->vmcb is initializedPaolo Bonzini2-3/+3
Right now, svm_hv_vmcb_dirty_nested_enlightenments has an incorrect dereference of vmcb->control.reserved_sw before the vmcb is checked for being non-NULL. The compiler is usually sinking the dereference after the check; instead of doing this ourselves in the source, ensure that svm_hv_vmcb_dirty_nested_enlightenments is only called with a non-NULL VMCB. Reported-by: Dan Carpenter <dan.carpenter@oracle.com> Cc: Vineeth Pillai <viremana@linux.microsoft.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> [Untested for now due to issues with my AMD machine. - Paolo]
2021-07-27x86/kvm: fix vcpu-id indexed array sizesJuergen Gross2-3/+3
KVM_MAX_VCPU_ID is the maximum vcpu-id of a guest, and not the number of vcpu-ids. Fix array indexed by vcpu-id to have KVM_MAX_VCPU_ID+1 elements. Note that this is currently no real problem, as KVM_MAX_VCPU_ID is an odd number, resulting in always enough padding being available at the end of those arrays. Nevertheless this should be fixed in order to avoid rare problems in case someone is using an even number for KVM_MAX_VCPU_ID. Signed-off-by: Juergen Gross <jgross@suse.com> Message-Id: <20210701154105.23215-2-jgross@suse.com> Cc: stable@vger.kernel.org Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2021-07-27omap5-board-common: remove not physically existing vdds_1v8_main fixed-regulatorH. Nikolaus Schaller1-8/+1
This device tree include file describes a fixed-regulator connecting smps7_reg output (1.8V) to some 1.8V rail and consumers (vdds_1v8_main). This regulator does not physically exist. I assume it was introduced as a wrapper around smps7_reg to provide a speaking signal name "vdds_1v8_main" as label. This fixed-regulator without real function was not an issue in driver code until Commit 98e48cd9283d ("regulator: core: resolve supply for boot-on/always-on regulators") introduced a new check for regulator initialization which makes Palmas regulator registration fail: [ 5.407712] ldo1: supplied by vsys_cobra [ 5.412748] ldo2: supplied by vsys_cobra [ 5.417603] palmas-pmic 48070000.i2c:palmas@48:palmas_pmic: failed to register 48070000.i2c:palmas@48:palmas_pmic regulator The reason is that the supply-chain of regulators is too long and goes from ldo3 through the virtual vdds_1v8_main regulator and then back to smps7. This adds a cross-dependency of probing Palmas regulators and the fixed-regulator which leads to probe deferral by the new check and is no longer resolved. Since we do not control what device tree files including this one reference (either &vdds_1v8_main or &smps7_reg or both) we keep both labels for smps7 for compatibility. Fixes: 98e48cd9283d ("regulator: core: resolve supply for boot-on/always-on regulators") Signed-off-by: H. Nikolaus Schaller <hns@goldelico.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
2021-07-27ARM: dts: am437x-l4: fix typo in can@0 nodeDario Binacchi1-1/+1
Replace clock-name with clock-names. Fixes: 2a4117df9b43 ("ARM: dts: Fix dcan driver probe failed on am437x platform") Signed-off-by: Dario Binacchi <dariobin@libero.it> Signed-off-by: Tony Lindgren <tony@atomide.com>
2021-07-27ARM: dts: am43x-epos-evm: Reduce i2c0 bus speed for tps65218Dave Gerlach1-1/+1
Based on the latest timing specifications for the TPS65218 from the data sheet, http://www.ti.com/lit/ds/symlink/tps65218.pdf, document SLDS206 from November 2014, we must change the i2c bus speed to better fit within the minimum high SCL time required for proper i2c transfer. When running at 400khz, measurements show that SCL spends 0.8125 uS/1.666 uS high/low which violates the requirement for minimum high period of SCL provided in datasheet Table 7.6 which is 1 uS. Switching to 100khz gives us 5 uS/5 uS high/low which both fall above the minimum given values for 100 khz, 4.0 uS/4.7 uS high/low. Without this patch occasionally a voltage set operation from the kernel will appear to have worked but the actual voltage reflected on the PMIC will not have updated, causing problems especially with cpufreq that may update to a higher OPP without actually raising the voltage on DCDC2, leading to a hang. Signed-off-by: Dave Gerlach <d-gerlach@ti.com> Signed-off-by: Kevin Hilman <khilman@baylibre.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
2021-07-27ARM: omap2+: hwmod: fix potential NULL pointer accessTero Kristo1-1/+9
omap_hwmod_get_pwrdm() may access a NULL clk_hw pointer in some failure cases. Add a check for the case and bail out gracely if this happens. Reported-by: Dan Murphy <dmurphy@ti.com> Signed-off-by: Tero Kristo <t-kristo@ti.com> Cc: stable@vger.kernel.org # v5.10+ Signed-off-by: Kevin Hilman <khilman@baylibre.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
2021-07-26KVM: x86: Check the right feature bit for MSR_KVM_ASYNC_PF_ACK accessVitaly Kuznetsov1-2/+2
MSR_KVM_ASYNC_PF_ACK MSR is part of interrupt based asynchronous page fault interface and not the original (deprecated) KVM_FEATURE_ASYNC_PF. This is stated in Documentation/virt/kvm/msr.rst. Fixes: 66570e966dd9 ("kvm: x86: only provide PV features if enabled in guest's CPUID") Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com> Reviewed-by: Maxim Levitsky <mlevitsk@redhat.com> Reviewed-by: Oliver Upton <oupton@google.com> Message-Id: <20210722123018.260035-1-vkuznets@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2021-07-26KVM: nSVM: Swap the parameter order for ↵Vitaly Kuznetsov3-13/+13
svm_copy_vmrun_state()/svm_copy_vmloadsave_state() Make svm_copy_vmrun_state()/svm_copy_vmloadsave_state() interface match 'memcpy(dest, src)' to avoid any confusion. No functional change intended. Suggested-by: Sean Christopherson <seanjc@google.com> Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com> Message-Id: <20210719090322.625277-1-vkuznets@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2021-07-26KVM: nSVM: Rename nested_svm_vmloadsave() to svm_copy_vmloadsave_state()Vitaly Kuznetsov3-5/+6
To match svm_copy_vmrun_state(), rename nested_svm_vmloadsave() to svm_copy_vmloadsave_state(). Opportunistically add missing braces to 'else' branch in vmload_vmsave_interception(). No functional change intended. Suggested-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com> Message-Id: <20210716144104.465269-1-vkuznets@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2021-07-26Merge branch 'fixes' into nextMichael Ellerman5-8/+68
Merge our fixes branch, which contains some fixes that didn't make it into rc2 but which we'd like in next.
2021-07-25alpha: fix spelling mistakesgushengxian5-6/+6
Fix some spelling mistakes in comments: delarations ==> declarations softare ==> software suffiently ==> sufficiently requred ==> required unaliged ==> unaligned Signed-off-by: gushengxian <gushengxian@yulong.com> Signed-off-by: Matt Turner <mattst88@gmail.com>
2021-07-25alpha: Remove space between * and parameter namegushengxian1-1/+1
'struct pcb_struct * pcb_va' should be 'struct pcb_struct *pcb_va'. Signed-off-by: gushengxian <gushengxian@yulong.com> Signed-off-by: Matt Turner <mattst88@gmail.com>
2021-07-25alpha: fp_emul: avoid init/cleanup_module namesArnd Bergmann1-2/+4
This is one of the last modules using the old calling conventions for module init/exit functions. Change it over to the style used everywhere else. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Matt Turner <mattst88@gmail.com>
2021-07-25alpha: Add syscall_get_return_value()He Zhe1-0/+6
audit now requires syscall_get_return_value instead of regs_return_value to retrieve syscall return code . Other architectures that support audit have already define this function. Signed-off-by: He Zhe <zhe.he@windriver.com> Signed-off-by: Matt Turner <mattst88@gmail.com>
2021-07-25alpha: fix typos in a commenttangchunyou1-1/+1
"kerne" -> "kernel" Signed-off-by: tangchunyou <tangchunyou@yulong.com> Signed-off-by: Matt Turner <mattst88@gmail.com>
2021-07-25alpha: defconfig: add necessary configs for boot testingCorentin Labbe1-0/+1
Gentoo's KernelCI will soon boot test alpha kernel and we need CONFIG_DEVTMPFS=y to be set for that. Note that CONFIG_DEVTMPFS=y is already necessary for lot of other distribution/tools like recent udev/systemd. Signed-off-by: Corentin Labbe <clabbe@baylibre.com> Signed-off-by: Matt Turner <mattst88@gmail.com>
2021-07-25alpha: Send stop IPI to send to online CPUsPrarit Bhargava1-1/+1
This issue was noticed while debugging a shutdown issue where some secondary CPUs are not being shutdown correctly. A fix for that [1] requires that secondary cpus be offlined using the cpu_online_mask so that the stop operation is a no-op if CPU HOTPLUG is disabled. I, like the author in [1] looked at the architectures and found that alpha is one of two architectures that executes smp_send_stop() on all possible CPUs. On alpha, smp_send_stop() sends an IPI to all possible CPUs but only needs to send them to online CPUs. Send the stop IPI to only the online CPUs. [1] https://lkml.org/lkml/2020/1/10/250 Signed-off-by: Prarit Bhargava <prarit@redhat.com> Cc: Richard Henderson <rth@twiddle.net> Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru> Signed-off-by: Matt Turner <mattst88@gmail.com>
2021-07-25alpha: convert comma to semicolonZheng Yongjun1-1/+1
Replace a comma between expression statements by a semicolon. Fixes: cba1ec7e88a0 ("alpha: switch to generic kernel_thread()") Signed-off-by: Zheng Yongjun <zhengyongjun3@huawei.com> Signed-off-by: Matt Turner <mattst88@gmail.com>
2021-07-25alpha: remove undef inline in compiler.hChen Li1-11/+0
since 889b3c1245de48ed0cacf7aebb25c489d3e4a3e9, CONFIG_OPTIMIZE_INLINING is removed entirely and inline is always defined to `inline __gnu_inline __inline_maybe_unused notrace` in compiler_types.h Besides, undef inline here also means it never use __attribute__((__gnu_inline__)), so `extern inline` function can never be defined header files, otherwise multiple definition errors will happen, e.g. if multiple translation units use alpha/include/asm/pal.h will report multiple definitions, because there are many extern inline function definitions in this header. ``` c extern inline TYPE NAME(void) \ { \ register TYPE __r0 __asm__("$0"); \ __asm__ __volatile__( \ ... ``` Ofc, it is also ok to remove `extern` in `extern inline` here, then all of iso c99 and gnuc99/89 are ok, but there are also other alpha headers have such function definitions. Signed-off-by: chenli <chenli@uniontech.com> Signed-off-by: Matt Turner <mattst88@gmail.com>
2021-07-25alpha: Kconfig: Replace HTTP links with HTTPS onesAlexander A. Klimov1-1/+1
Rationale: Reduces attack surface on kernel devs opening the links for MITM as HTTPS traffic is much harder to manipulate. Deterministic algorithm: For each file: If not .svg: For each line: If doesn't contain `\bxmlns\b`: For each link, `\bhttp://[^# \t\r\n]*(?:\w|/)`: If neither `\bgnu\.org/license`, nor `\bmozilla\.org/MPL\b`: If both the HTTP and HTTPS versions return 200 OK and serve the same content: Replace HTTP with HTTPS. Signed-off-by: Alexander A. Klimov <grandmaster@al2klimov.de> Signed-off-by: Matt Turner <mattst88@gmail.com>
2021-07-25alpha: __udiv_qrnnd should be exportedCorentin Labbe1-0/+2
When building an alpha kernel with mpi set as module, I hit this build error: ERROR: "__udiv_qrnnd" [lib/mpi/mpi.ko] undefined! make[2]: *** [scripts/Makefile.modpost:92: __modpost] Error 1 make[1]: *** [Makefile:1266: modules] Error 2 This is due to __udiv_qrnnd not exported. Signed-off-by: Corentin Labbe <clabbe@baylibre.com> Signed-off-by: Matt Turner <mattst88@gmail.com>
2021-07-26m68k/coldfire: change pll var. to clk_pllRandy Dunlap1-1/+1
DEFINE_CLK() makes the variable name be clk_xyz, so variable 'pll' should instead be 'clk_pll'. In file included from ../arch/m68k/coldfire/m525x.c:12: ../arch/m68k/coldfire/m525x.c:29:30: error: 'pll' undeclared here (not in a function) 29 | CLKDEV_INIT(NULL, "pll.0", &pll), | ^~~ ../include/linux/clkdev.h:30:10: note: in definition of macro 'CLKDEV_INIT' 30 | .clk = c, \ | ^ In file included from ../arch/m68k/coldfire/m525x.c:21: ../arch/m68k/include/asm/mcfclk.h:43:27: warning: 'clk_pll' defined but not used [-Wunused-variable] 43 | static struct clk clk_##clk_ref = { \ | ^~~~ ../arch/m68k/coldfire/m525x.c:25:1: note: in expansion of macro 'DEFINE_CLK' 25 | DEFINE_CLK(pll, "pll.0", MCF_CLK); | ^~~~~~~~~~ Fixes: 63aadb77669a ("m68k: coldfire: use clkdev_lookup on most coldfire") Reported-by: kernel test robot <lkp@intel.com> Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Cc: Greg Ungerer <gerg@linux-m68k.org> Cc: linux-m68k@lists.linux-m68k.org Cc: uclinux-dev@uclinux.org Cc: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Greg Ungerer <gerg@linux-m68k.org>
2021-07-25Merge tag 'powerpc-5.14-3' of ↵Linus Torvalds5-8/+68
git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux Pull powerpc fixes from Michael Ellerman: - Fix guest to host memory corruption in H_RTAS due to missing nargs check. - Fix guest triggerable host crashes due to bad handling of nested guest TM state. - Fix possible crashes due to incorrect reference counting in kvm_arch_vcpu_ioctl(). - Two commits fixing some regressions in KVM transactional memory handling introduced by the recent rework of the KVM code. Thanks to Nicholas Piggin, Alexey Kardashevskiy, and Michael Neuling. * tag 'powerpc-5.14-3' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: KVM: PPC: Book3S HV Nested: Sanitise H_ENTER_NESTED TM state KVM: PPC: Book3S: Fix H_RTAS rets buffer overflow KVM: PPC: Fix kvm_arch_vcpu_ioctl vcpu_load leak KVM: PPC: Book3S: Fix CONFIG_TRANSACTIONAL_MEM=n crash KVM: PPC: Book3S HV P9: Fix guest TM support
2021-07-25Merge tag 'locking-urgent-2021-07-25' of ↵Linus Torvalds1-3/+4
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull x86 jump label fix from Thomas Gleixner: "A single fix for jump labels to prevent the compiler from agressive un-inlining which results in a section mismatch" * tag 'locking-urgent-2021-07-25' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: jump_labels: Mark __jump_label_transform() as __always_inlined to work around aggressive compiler un-inlining
2021-07-24Merge tag 'riscv-for-linus-5.14-rc3' of ↵Linus Torvalds4-21/+48
git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux Pull RISC-V fixes from Palmer Dabbelt: - properly set the memory size, which fixes 32-bit systems - allow initrd to load anywhere in memory, rather that restricting it to the first 256MiB - fix the 'mem=' parameter on 64-bit systems to properly account for the maximum supported memory now that the kernel is outside the linear map - avoid installing mappings into the last 4KiB of memory, which conflicts with error values - avoid the stack from being freed while it is being walked - a handful of fixes to the new copy to/from user routines * tag 'riscv-for-linus-5.14-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux: riscv: __asm_copy_to-from_user: Fix: Typos in comments riscv: __asm_copy_to-from_user: Remove unnecessary size check riscv: __asm_copy_to-from_user: Fix: fail on RV32 riscv: __asm_copy_to-from_user: Fix: overrun copy riscv: stacktrace: pin the task's stack in get_wchan riscv: Make sure the kernel mapping does not overlap with IS_ERR_VALUE riscv: Make sure the linear mapping does not use the kernel mapping riscv: Fix memory_limit for 64-bit kernel RISC-V: load initrd wherever it fits into memory riscv: Fix 32-bit RISC-V boot failure
2021-07-24riscv: stacktrace: Fix NULL pointer dereferenceJisheng Zhang1-1/+1
When CONFIG_FRAME_POINTER=y, calling dump_stack() can always trigger NULL pointer dereference panic similar as below: [ 0.396060] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 5.13.0-rc5+ #47 [ 0.396692] Hardware name: riscv-virtio,qemu (DT) [ 0.397176] Call Trace: [ 0.398191] Unable to handle kernel NULL pointer dereference at virtual address 0000000000000960 [ 0.399487] Oops [#1] [ 0.399739] Modules linked in: [ 0.400135] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 5.13.0-rc5+ #47 [ 0.400570] Hardware name: riscv-virtio,qemu (DT) [ 0.400926] epc : walk_stackframe+0xc4/0xdc [ 0.401291] ra : dump_backtrace+0x30/0x38 [ 0.401630] epc : ffffffff80004922 ra : ffffffff8000496a sp : ffffffe000f3bd00 [ 0.402115] gp : ffffffff80cfdcb8 tp : ffffffe000f30000 t0 : ffffffff80d0b0cf [ 0.402602] t1 : ffffffff80d0b0c0 t2 : 0000000000000000 s0 : ffffffe000f3bd60 [ 0.403071] s1 : ffffffff808bc2e8 a0 : 0000000000001000 a1 : 0000000000000000 [ 0.403448] a2 : ffffffff803d7088 a3 : ffffffff808bc2e8 a4 : 6131725dbc24d400 [ 0.403820] a5 : 0000000000001000 a6 : 0000000000000002 a7 : ffffffffffffffff [ 0.404226] s2 : 0000000000000000 s3 : 0000000000000000 s4 : 0000000000000000 [ 0.404634] s5 : ffffffff803d7088 s6 : ffffffff808bc2e8 s7 : ffffffff80630650 [ 0.405085] s8 : ffffffff80912a80 s9 : 0000000000000008 s10: ffffffff804000fc [ 0.405388] s11: 0000000000000000 t3 : 0000000000000043 t4 : ffffffffffffffff [ 0.405616] t5 : 000000000000003d t6 : ffffffe000f3baa8 [ 0.405793] status: 0000000000000100 badaddr: 0000000000000960 cause: 000000000000000d [ 0.406135] [<ffffffff80004922>] walk_stackframe+0xc4/0xdc [ 0.407032] [<ffffffff8000496a>] dump_backtrace+0x30/0x38 [ 0.407797] [<ffffffff803d7100>] show_stack+0x40/0x4c [ 0.408234] [<ffffffff803d9e5c>] dump_stack+0x90/0xb6 [ 0.409019] [<ffffffff8040423e>] ptdump_init+0x20/0xc4 [ 0.409681] [<ffffffff800015b6>] do_one_initcall+0x4c/0x226 [ 0.410110] [<ffffffff80401094>] kernel_init_freeable+0x1f4/0x258 [ 0.410562] [<ffffffff803dba88>] kernel_init+0x22/0x148 [ 0.410959] [<ffffffff800029e2>] ret_from_exception+0x0/0x14 [ 0.412241] ---[ end trace b2ab92c901b96251 ]--- [ 0.413099] Kernel panic - not syncing: Attempted to kill init! exitcode=0x0000000b The reason is the task is NULL when we finally call walk_stackframe() the NULL is passed from __dump_stack(): |static void __dump_stack(void) |{ | dump_stack_print_info(KERN_DEFAULT); | show_stack(NULL, NULL, KERN_DEFAULT); |} Fix this issue by checking "task == NULL" case in walk_stackframe(). Fixes: eac2f3059e02 ("riscv: stacktrace: fix the riscv stacktrace when CONFIG_FRAME_POINTER enabled") Signed-off-by: Jisheng Zhang <jszhang@kernel.org> Reviewed-by: Atish Patra <atish.patra@wdc.com> Tested-by: Wende Tan <twd2.me@gmail.com> Signed-off-by: Palmer Dabbelt <palmerdabbelt@google.com>
2021-07-24arm64: dts: imx8mp: remove fallback compatible string for FlexCANJoakim Zhang1-2/+2
FlexCAN on i.MX8MP is not derived from i.MX6Q, instead reuses from i.MX8QM with extra ECC added and default is enabled, so that the FlexCAN would be put into freeze mode without FLEXCAN_QUIRK_DISABLE_MECR quirk. This patch removes "fsl,imx6q-flexcan" fallback compatible string since it's not compatible with the i.MX6Q. Link: https://lore.kernel.org/r/20210719073437.32078-1-qiangqing.zhang@nxp.com Signed-off-by: Joakim Zhang <qiangqing.zhang@nxp.com> Reviewed-by: Fabio Estevam <festevam@gmail.com> Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
2021-07-23riscv: __asm_copy_to-from_user: Fix: Typos in commentsAkira Tsukamoto1-9/+9
Fixing typos and grammar mistakes and using more intuitive label name. Signed-off-by: Akira Tsukamoto <akira.tsukamoto@gmail.com> Fixes: ca6eaaa210de ("riscv: __asm_copy_to-from_user: Optimize unaligned memory access and pipeline stall") Signed-off-by: Palmer Dabbelt <palmerdabbelt@google.com>
2021-07-23riscv: __asm_copy_to-from_user: Remove unnecessary size checkAkira Tsukamoto1-1/+0
Clean up: The size of 0 will be evaluated in the next step. Not required here. Signed-off-by: Akira Tsukamoto <akira.tsukamoto@gmail.com> Fixes: ca6eaaa210de ("riscv: __asm_copy_to-from_user: Optimize unaligned memory access and pipeline stall") Signed-off-by: Palmer Dabbelt <palmerdabbelt@google.com>
2021-07-23riscv: __asm_copy_to-from_user: Fix: fail on RV32Akira Tsukamoto1-1/+1
Had a bug when converting bytes to bits when the cpu was rv32. The a3 contains the number of bytes and multiple of 8 would be the bits. The LGREG is holding 2 for RV32 and 3 for RV32, so to achieve multiple of 8 it must always be constant 3. The 2 was mistakenly used for rv32. Signed-off-by: Akira Tsukamoto <akira.tsukamoto@gmail.com> Fixes: ca6eaaa210de ("riscv: __asm_copy_to-from_user: Optimize unaligned memory access and pipeline stall") Signed-off-by: Palmer Dabbelt <palmerdabbelt@google.com>
2021-07-23riscv: __asm_copy_to-from_user: Fix: overrun copyAkira Tsukamoto1-3/+3
There were two causes for the overrun memory access. The threshold size was too small. The aligning dst require one SZREG and unrolling word copy requires 8*SZREG, total have to be at least 9*SZREG. Inside the unrolling copy, the subtracting -(8*SZREG-1) would make iteration happening one extra loop. Proper value is -(8*SZREG). Signed-off-by: Akira Tsukamoto <akira.tsukamoto@gmail.com> Fixes: ca6eaaa210de ("riscv: __asm_copy_to-from_user: Optimize unaligned memory access and pipeline stall") Signed-off-by: Palmer Dabbelt <palmerdabbelt@google.com>
2021-07-23riscv: stacktrace: pin the task's stack in get_wchanJisheng Zhang1-1/+5
Pin the task's stack before calling walk_stackframe() in get_wchan(). This can fix the panic as reported by Andreas when CONFIG_VMAP_STACK=y: [ 65.609696] Unable to handle kernel paging request at virtual address ffffffd0003bbde8 [ 65.610460] Oops [#1] [ 65.610626] Modules linked in: virtio_blk virtio_mmio rtc_goldfish btrfs blake2b_generic libcrc32c xor raid6_pq sg dm_multipath dm_mod scsi_dh_rdac scsi_dh_emc scsi_dh_alua efivarfs [ 65.611670] CPU: 2 PID: 1 Comm: systemd Not tainted 5.14.0-rc1-1.g34fe32a-default #1 openSUSE Tumbleweed (unreleased) c62f7109153e5a0897ee58ba52393ad99b070fd2 [ 65.612334] Hardware name: riscv-virtio,qemu (DT) [ 65.613008] epc : get_wchan+0x5c/0x88 [ 65.613334] ra : get_wchan+0x42/0x88 [ 65.613625] epc : ffffffff800048a4 ra : ffffffff8000488a sp : ffffffd00021bb90 [ 65.614008] gp : ffffffff817709f8 tp : ffffffe07fe91b80 t0 : 00000000000001f8 [ 65.614411] t1 : 0000000000020000 t2 : 0000000000000000 s0 : ffffffd00021bbd0 [ 65.614818] s1 : ffffffd0003bbdf0 a0 : 0000000000000001 a1 : 0000000000000002 [ 65.615237] a2 : ffffffff81618008 a3 : 0000000000000000 a4 : 0000000000000000 [ 65.615637] a5 : ffffffd0003bc000 a6 : 0000000000000002 a7 : ffffffe27d370000 [ 65.616022] s2 : ffffffd0003bbd90 s3 : ffffffff8071a81e s4 : 0000000000003fff [ 65.616407] s5 : ffffffffffffc000 s6 : 0000000000000000 s7 : ffffffff81618008 [ 65.616845] s8 : 0000000000000001 s9 : 0000000180000040 s10: 0000000000000000 [ 65.617248] s11: 000000000000016b t3 : 000000ff00000000 t4 : 0c6aec92de5e3fd7 [ 65.617672] t5 : fff78f60608fcfff t6 : 0000000000000078 [ 65.618088] status: 0000000000000120 badaddr: ffffffd0003bbde8 cause: 000000000000000d [ 65.618621] [<ffffffff800048a4>] get_wchan+0x5c/0x88 [ 65.619008] [<ffffffff8022da88>] do_task_stat+0x7a2/0xa46 [ 65.619325] [<ffffffff8022e87e>] proc_tgid_stat+0xe/0x16 [ 65.619637] [<ffffffff80227dd6>] proc_single_show+0x46/0x96 [ 65.619979] [<ffffffff801ccb1e>] seq_read_iter+0x190/0x31e [ 65.620341] [<ffffffff801ccd70>] seq_read+0xc4/0x104 [ 65.620633] [<ffffffff801a6bfe>] vfs_read+0x6a/0x112 [ 65.620922] [<ffffffff801a701c>] ksys_read+0x54/0xbe [ 65.621206] [<ffffffff801a7094>] sys_read+0xe/0x16 [ 65.621474] [<ffffffff8000303e>] ret_from_syscall+0x0/0x2 [ 65.622169] ---[ end trace f24856ed2b8789c5 ]--- [ 65.622832] Kernel panic - not syncing: Attempted to kill init! exitcode=0x0000000b Signed-off-by: Jisheng Zhang <jszhang@kernel.org> Signed-off-by: Palmer Dabbelt <palmerdabbelt@google.com>
2021-07-23Merge tag 'm68k-for-v5.14-tag2' of ↵Linus Torvalds1-0/+1
git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68k Pull m68k fix from Geert Uytterhoeven: - Fix a Mac defconfig regression due to the IDE -> ATA switch * tag 'm68k-for-v5.14-tag2' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68k: m68k: MAC should select HAVE_PATA_PLATFORM
2021-07-23Merge tag 'char-misc-5.14-rc3' of ↵Linus Torvalds1-1/+1
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc Pull char/misc fixes from Greg KH: "Here are some small char/misc driver fixes for 5.14-rc3. Included in here are: - MAINTAINERS file updates for two changes in different driver subsystems - mhi bus bugfixes - nds32 bugfix that resolves a reported problem All have been in linux-next with no reported problems" * tag 'char-misc-5.14-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: nds32: fix up stack guard gap MAINTAINERS: Change ACRN HSM driver maintainer MAINTAINERS: Update for VMCI driver bus: mhi: pci_generic: Fix inbound IPCR channel bus: mhi: core: Validate channel ID when processing command completions bus: mhi: pci_generic: Apply no-op for wake using sideband wake boolean
2021-07-23Merge tag 'usb-5.14-rc3' of ↵Linus Torvalds9-14/+14
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb Pull USB fixes from Greg KH: "Here are some USB fixes for 5.14-rc3 to resolve a bunch of tiny problems reported. Included in here are: - dtsi revert to resolve a problem which broke android systems that relied on the dts name to find the USB controller device. People are still working out the "real" solution for this, but for now the revert is needed. - core USB fix for pipe calculation found by syzbot - typec fixes - gadget driver fixes - new usb-serial device ids - new USB quirks - xhci fixes - usb hub fixes for power management issues reported - other tiny fixes All have been in linux-next with no reported problems" * tag 'usb-5.14-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (27 commits) USB: serial: cp210x: add ID for CEL EM3588 USB ZigBee stick Revert "USB: quirks: ignore remote wake-up on Fibocom L850-GL LTE modem" usb: cdc-wdm: fix build error when CONFIG_WWAN_CORE is not set Revert "arm64: dts: qcom: Harmonize DWC USB3 DT nodes name" usb: dwc2: gadget: Fix sending zero length packet in DDMA mode. usb: dwc2: Skip clock gating on Samsung SoCs usb: renesas_usbhs: Fix superfluous irqs happen after usb_pkt_pop() usb: dwc2: gadget: Fix GOUTNAK flow for Slave mode. usb: phy: Fix page fault from usb_phy_uevent usb: xhci: avoid renesas_usb_fw.mem when it's unusable usb: gadget: u_serial: remove WARN_ON on null port usb: dwc3: avoid NULL access of usb_gadget_driver usb: max-3421: Prevent corruption of freed memory usb: gadget: Fix Unbalanced pm_runtime_enable in tegra_xudc_probe MAINTAINERS: repair reference in USB IP DRIVER FOR HISILICON KIRIN 970 usb: typec: stusb160x: Don't block probing of consumer of "connector" nodes usb: typec: stusb160x: register role switch before interrupt registration USB: usb-storage: Add LaCie Rugged USB3-FW to IGNORE_UAS usb: ehci: Prevent missed ehci interrupts with edge-triggered MSI usb: hub: Disable USB 3 device initiated lpm if exit latency is too high ...
2021-07-23arm64: dts: armada-3720-turris-mox: remove mrvl,i2c-fast-modePali Rohár1-0/+1
Some SFP modules are not detected when i2c-fast-mode is enabled even when clock-frequency is already set to 100000. The I2C bus violates the timing specifications when run in fast mode. So disable fast mode on Turris Mox. Same change was already applied for uDPU (also Armada 3720 board with SFP) in commit fe3ec631a77d ("arm64: dts: uDPU: remove i2c-fast-mode"). Fixes: 7109d817db2e ("arm64: dts: marvell: add DTS for Turris Mox") Signed-off-by: Pali Rohár <pali@kernel.org> Reviewed-by: Marek Behún <kabel@kernel.org> Acked-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk> Signed-off-by: Gregory CLEMENT <gregory.clement@bootlin.com>
2021-07-23arm64: dts: armada-3720-turris-mox: fixed indices for the SDHC controllersVladimir Oltean1-0/+2
Since drivers/mmc/host/sdhci-xenon.c declares the PROBE_PREFER_ASYNCHRONOUS probe type, it is not guaranteed whether /dev/mmcblk0 will belong to sdhci0 or sdhci1. In turn, this will break booting by: root=/dev/mmcblk0p1 Fix the issue by adding aliases so that the old MMC controller indices are preserved. Fixes: 7320915c8861 ("mmc: Set PROBE_PREFER_ASYNCHRONOUS for drivers that existed in v4.14") Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com> Signed-off-by: Gregory CLEMENT <gregory.clement@bootlin.com>
2021-07-23ARM: dts: imx: Swap M53Menlo pinctrl_power_button/pinctrl_power_out pinsMarek Vasut1-2/+2
The pinctrl_power_button/pinctrl_power_out each define single GPIO pinmux, except it is exactly the other one than the matching gpio-keys and gpio-poweroff DT nodes use for that functionality. Swap the two GPIOs to correct this error. Fixes: 50d29fdb765d ("ARM: dts: imx53: Add power GPIOs on M53Menlo") Signed-off-by: Marek Vasut <marex@denx.de> Cc: Shawn Guo <shawnguo@kernel.org> Cc: Fabio Estevam <festevam@gmail.com> Cc: NXP Linux Team <linux-imx@nxp.com> Reviewed-by: Fabio Estevam <festevam@gmail.com> Signed-off-by: Shawn Guo <shawnguo@kernel.org>
2021-07-23ARM: imx: fix missing 3rd argument in macro imx_mmdc_perf_initColin Ian King1-1/+1
The function imx_mmdc_perf_init recently had a 3rd argument added to it but the equivalent macro was not updated and is still the older 2 argument version. Fix this by adding in the missing 3rd argumement mmdc_ipg_clk. Fixes: f07ec8536580 ("ARM: imx: add missing clk_disable_unprepare()") Signed-off-by: Colin Ian King <colin.king@canonical.com> Signed-off-by: Shawn Guo <shawnguo@kernel.org>
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