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2019-07-29tools headers UAPI: Update tools's copy of mman.h headersArnaldo Carvalho de Melo
To pick up the changes from: 8aa3c927ec10 ("mm/mmap: move common defines to mman-common.h") 22fcea6f85f2 ("mm: move MAP_SYNC to asm-generic/mman-common.h") 0bf5f9492389 ("mm: fix the MAP_UNINITIALIZED flag") To address the following perf build warnings: Warning: Kernel ABI header at 'tools/include/uapi/asm-generic/mman-common.h' differs from latest version at 'include/uapi/asm-generic/mman-common.h' diff -u tools/include/uapi/asm-generic/mman-common.h include/uapi/asm-generic/mman-common.h Warning: Kernel ABI header at 'tools/include/uapi/asm-generic/mman.h' differs from latest version at 'include/uapi/asm-generic/mman.h' diff -u tools/include/uapi/asm-generic/mman.h include/uapi/asm-generic/mman.h That ends up just moving a bit the auto-generated code->string tables: $ tools/perf/trace/beauty/mmap_flags.sh > before $ cp include/uapi/asm-generic/mman.h tools/include/uapi/asm-generic/mman.h $ cp include/uapi/asm-generic/mman-common.h tools/include/uapi/asm-generic/mman-common.h $ tools/perf/trace/beauty/mmap_flags.sh > after $ diff -u before after --- before 2019-07-26 12:45:02.948335904 -0300 +++ after 2019-07-26 12:48:05.342893539 -0300 @@ -4,15 +4,15 @@ [ilog2(0x02) + 1] = "PRIVATE", [ilog2(0x10) + 1] = "FIXED", [ilog2(0x20) + 1] = "ANONYMOUS", + [ilog2(0x008000) + 1] = "POPULATE", + [ilog2(0x010000) + 1] = "NONBLOCK", + [ilog2(0x020000) + 1] = "STACK", + [ilog2(0x040000) + 1] = "HUGETLB", + [ilog2(0x080000) + 1] = "SYNC", [ilog2(0x100000) + 1] = "FIXED_NOREPLACE", [ilog2(0x0100) + 1] = "GROWSDOWN", [ilog2(0x0800) + 1] = "DENYWRITE", [ilog2(0x1000) + 1] = "EXECUTABLE", [ilog2(0x2000) + 1] = "LOCKED", [ilog2(0x4000) + 1] = "NORESERVE", - [ilog2(0x8000) + 1] = "POPULATE", - [ilog2(0x10000) + 1] = "NONBLOCK", - [ilog2(0x20000) + 1] = "STACK", - [ilog2(0x40000) + 1] = "HUGETLB", - [ilog2(0x80000) + 1] = "SYNC", }; $ Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com> Cc: Christoph Hellwig <hch@lst.de> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Luis Cláudio Gonçalves <lclaudio@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Link: https://lkml.kernel.org/n/tip-fzqvzni9megaurmsp0k4vy27@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-07-27Merge branch 'perf-urgent-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull perf fixes from Thomas Gleixner: "A pile of perf related fixes: Kernel: - Fix SLOTS PEBS event constraints for Icelake CPUs - Add the missing mask bit to allow counting hardware generated prefetches on L3 for Icelake CPUs - Make the test for hypervisor platforms more accurate (as far as possible) - Handle PMUs correctly which override event->cpu - Yet another missing fallthrough annotation Tools: perf.data: - Fix loading of compressed data split across adjacent records - Fix buffer size setting for processing CPU topology perf.data header. perf stat: - Fix segfault for event group in repeat mode - Always separate "stalled cycles per insn" line, it was being appended to the "instructions" line. perf script: - Fix --max-blocks man page description. - Improve man page description of metrics. - Fix off by one in brstackinsn IPC computation. perf probe: - Avoid calling freeing routine multiple times for same pointer. perf build: - Do not use -Wshadow on gcc < 4.8, avoiding too strict warnings treated as errors, breaking the build" * 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: perf/x86/intel: Mark expected switch fall-throughs perf/core: Fix creating kernel counters for PMUs that override event->cpu perf/x86: Apply more accurate check on hypervisor platform perf/x86/intel: Fix invalid Bit 13 for Icelake MSR_OFFCORE_RSP_x register perf/x86/intel: Fix SLOTS PEBS event constraint perf build: Do not use -Wshadow on gcc < 4.8 perf probe: Avoid calling freeing routine multiple times for same pointer perf probe: Set pev->nargs to zero after freeing pev->args entries perf session: Fix loading of compressed data split across adjacent records perf stat: Always separate stalled cycles per insn perf stat: Fix segfault for event group in repeat mode perf tools: Fix proper buffer size for feature processing perf script: Fix off by one in brstackinsn IPC computation perf script: Improve man page description of metrics perf script: Fix --max-blocks man page description
2019-07-27Merge branch 'core-urgent-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull objtool fix from Thomas Gleixner: "A single robustness fix for objtool to handle unbalanced CLAC invocations under all circumstances" * 'core-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: objtool: Improve UACCESS coverage
2019-07-26libbpf: fix erroneous multi-closing of BTF FDAndrii Nakryiko
Libbpf stores associated BTF FD per each instance of bpf_program. When program is unloaded, that FD is closed. This is wrong, because leads to a race and possibly closing of unrelated files, if application simultaneously opens new files while bpf_programs are unloaded. It's also unnecessary, because struct btf "owns" that FD, and btf__free(), called from bpf_object__close() will close it. Thus the fix is to never have per-program BTF FD and fetch it from obj->btf, when necessary. Fixes: 2993e0515bb4 ("tools/bpf: add support to read .BTF.ext sections") Reported-by: Andrey Ignatov <rdna@fb.com> Signed-off-by: Andrii Nakryiko <andriin@fb.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2019-07-26tools headers UAPI: Update tools's copy of kvm.h headersArnaldo Carvalho de Melo
Picking the changes from: 66bb8a065f5a ("KVM: x86: PMU Event Filter") f087a02941fe ("KVM: nVMX: Stash L1's CR3 in vmcs01.GUEST_CR3 on nested entry w/o EPT") 99adb567632b ("KVM: arm/arm64: Add save/restore support for firmware workaround state") Silencing this perf build warning: Warning: Kernel ABI header at 'tools/arch/arm/include/uapi/asm/kvm.h' differs from latest version at 'arch/arm/include/uapi/asm/kvm.h' diff -u tools/arch/arm/include/uapi/asm/kvm.h arch/arm/include/uapi/asm/kvm.h Warning: Kernel ABI header at 'tools/arch/arm64/include/uapi/asm/kvm.h' differs from latest version at 'arch/arm64/include/uapi/asm/kvm.h' diff -u tools/arch/arm64/include/uapi/asm/kvm.h arch/arm64/include/uapi/asm/kvm.h Warning: Kernel ABI header at 'tools/arch/x86/include/uapi/asm/vmx.h' differs from latest version at 'arch/x86/include/uapi/asm/vmx.h' diff -u tools/arch/x86/include/uapi/asm/vmx.h arch/x86/include/uapi/asm/vmx.h Warning: Kernel ABI header at 'tools/arch/x86/include/uapi/asm/kvm.h' differs from latest version at 'arch/x86/include/uapi/asm/kvm.h' diff -u tools/arch/x86/include/uapi/asm/kvm.h arch/x86/include/uapi/asm/kvm.h Warning: Kernel ABI header at 'tools/include/uapi/linux/kvm.h' differs from latest version at 'include/uapi/linux/kvm.h' diff -u tools/include/uapi/linux/kvm.h include/uapi/linux/kvm.h Now 'perf trace' and other code that might use the tools/perf/trace/beauty autogenerated tables will be able to translate this new ioctl code into a string: $ tools/perf/trace/beauty/kvm_ioctl.sh > before $ $ cp include/uapi/linux/kvm.h tools/include/uapi/linux/kvm.h $ tools/perf/trace/beauty/kvm_ioctl.sh > after $ diff -u before after --- before 2019-07-26 12:32:47.959220236 -0300 +++ after 2019-07-26 12:33:05.766464871 -0300 @@ -79,6 +79,7 @@ [0xac] = "SET_ONE_REG", [0xad] = "KVMCLOCK_CTRL", [0xb0] = "GET_REG_LIST", + [0xb2] = "SET_PMU_EVENT_FILTER", [0xb7] = "SMI", [0xba] = "MEMORY_ENCRYPT_OP", [0xbb] = "MEMORY_ENCRYPT_REG_REGION", $ Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Andre Przywara <andre.przywara@arm.com> Cc: Brendan Gregg <brendan.d.gregg@gmail.com> Cc: Eric Hankland <ehankland@google.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Luis Cláudio Gonçalves <lclaudio@redhat.com> Cc: Marc Zyngier <marc.zyngier@arm.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Paolo Bonzini <pbonzini@redhat.com> Cc: Sean Christopherson <sean.j.christopherson@intel.com> Link: https://lkml.kernel.org/n/tip-py1gcmt6rboehlwg6zvagfg2@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-07-26tools include UAPI: Sync x86's syscalls_64.tbl and generic unistd.h to pick ↵Arnaldo Carvalho de Melo
up clone3 and pidfd_open 05a70a8ec287 ("unistd: protect clone3 via __ARCH_WANT_SYS_CLONE3") 8f3220a80654 ("arch: wire-up clone3() syscall") 7615d9e1780e ("arch: wire-up pidfd_open()") Silencing the following tools/perf build warnings Warning: Kernel ABI header at 'tools/include/uapi/asm-generic/unistd.h' differs from latest version at 'include/uapi/asm-generic/unistd.h' diff -u tools/include/uapi/asm-generic/unistd.h include/uapi/asm-generic/unistd.h Warning: Kernel ABI header at 'tools/perf/arch/x86/entry/syscalls/syscall_64.tbl' differs from latest version at 'arch/x86/entry/syscalls/syscall_64.tbl' diff -u tools/perf/arch/x86/entry/syscalls/syscall_64.tbl arch/x86/entry/syscalls/syscall_64.tbl Now 'perf trace -e pidfd*,clone*' will trace those syscalls as well as the others with those prefixes. $ diff -u /tmp/build/perf/arch/x86/include/generated/asm/syscalls_64.c.before /tmp/build/perf/arch/x86/include/generated/asm/syscalls_64.c --- /tmp/build/perf/arch/x86/include/generated/asm/syscalls_64.c.before 2019-07-26 12:24:55.020944201 -0300 +++ /tmp/build/perf/arch/x86/include/generated/asm/syscalls_64.c 2019-07-26 12:25:03.919047217 -0300 @@ -344,5 +344,7 @@ [431] = "fsconfig", [432] = "fsmount", [433] = "fspick", + [434] = "pidfd_open", + [435] = "clone3", }; -#define SYSCALLTBL_x86_64_MAX_ID 433 +#define SYSCALLTBL_x86_64_MAX_ID 435 $ Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Brendan Gregg <brendan.d.gregg@gmail.com> Cc: Christian Brauner <christian@brauner.io> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Luis Cláudio Gonçalves <lclaudio@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Link: https://lkml.kernel.org/n/tip-0isnnqxtr1ihz6p8wzjiy47d@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-07-25Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpfDavid S. Miller
Alexei Starovoitov says: ==================== pull-request: bpf 2019-07-25 The following pull-request contains BPF updates for your *net* tree. The main changes are: 1) fix segfault in libbpf, from Andrii. 2) fix gso_segs access, from Eric. 3) tls/sockmap fixes, from Jakub and John. ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
2019-07-25selftests/net: add missing gitignores (ipv6_flowlabel)Jakub Kicinski
ipv6_flowlabel and ipv6_flowlabel_mgr are missing from gitignore. Quentin points out that the original commit 3fb321fde22d ("selftests/net: ipv6 flowlabel") did add ignore entries, they are just missing the "ipv6_" prefix. Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com> Reviewed-by: Quentin Monnet <quentin.monnet@netronome.com> Acked-by: Willem de Bruijn <willemb@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-07-25libbpf: silence GCC8 warning about string truncationAndrii Nakryiko
Despite a proper NULL-termination after strncpy(..., ..., IFNAMSIZ - 1), GCC8 still complains about *expected* string truncation: xsk.c:330:2: error: 'strncpy' output may be truncated copying 15 bytes from a string of length 15 [-Werror=stringop-truncation] strncpy(ifr.ifr_name, xsk->ifname, IFNAMSIZ - 1); This patch gets rid of the issue altogether by using memcpy instead. There is no performance regression, as strncpy will still copy and fill all of the bytes anyway. v1->v2: - rebase against bpf tree. Cc: Magnus Karlsson <magnus.karlsson@intel.com> Signed-off-by: Andrii Nakryiko <andriin@fb.com> Acked-by: Magnus Karlsson <magnus.karlsson@intel.com> Acked-by: Song Liu <songliubraving@fb.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2019-07-25Merge tag 'ktest-v5.3' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-ktest Pull ktest fixlets from Steven Rostedt: "This contains only simple spelling fixes" * tag 'ktest-v5.3' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-ktest: ktest: Fix some typos in config-bisect.pl
2019-07-25objtool: Improve UACCESS coveragePeter Zijlstra
A clang build reported an (obvious) double CLAC while a GCC build did not; it turns out that objtool only re-visits instructions if the first visit was with AC=0. If OTOH the first visit was with AC=1, it completely ignores any subsequent visit, even when it has AC=0. Fix this by using a visited mask instead of a boolean, and (explicitly) mark the AC state. $ ./objtool check -b --no-fp --retpoline --uaccess drivers/gpu/drm/i915/gem/i915_gem_execbuffer.o drivers/gpu/drm/i915/gem/i915_gem_execbuffer.o: warning: objtool: .altinstr_replacement+0x22: redundant UACCESS disable drivers/gpu/drm/i915/gem/i915_gem_execbuffer.o: warning: objtool: eb_copy_relocations.isra.34()+0xea: (alt) drivers/gpu/drm/i915/gem/i915_gem_execbuffer.o: warning: objtool: .altinstr_replacement+0xffffffffffffffff: (branch) drivers/gpu/drm/i915/gem/i915_gem_execbuffer.o: warning: objtool: eb_copy_relocations.isra.34()+0xd9: (alt) drivers/gpu/drm/i915/gem/i915_gem_execbuffer.o: warning: objtool: eb_copy_relocations.isra.34()+0xb2: (branch) drivers/gpu/drm/i915/gem/i915_gem_execbuffer.o: warning: objtool: eb_copy_relocations.isra.34()+0x39: (branch) drivers/gpu/drm/i915/gem/i915_gem_execbuffer.o: warning: objtool: eb_copy_relocations.isra.34()+0x0: <=== (func) Reported-by: Josh Poimboeuf <jpoimboe@redhat.com> Reported-by: Thomas Gleixner <tglx@linutronix.de> Reported-by: Sedat Dilek <sedat.dilek@gmail.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Tested-by: Nathan Chancellor <natechancellor@gmail.com> Tested-by: Nick Desaulniers <ndesaulniers@google.com> Tested-by: Sedat Dilek <sedat.dilek@gmail.com> Link: https://github.com/ClangBuiltLinux/linux/issues/617 Link: https://lkml.kernel.org/r/5359166aad2d53f3145cd442d83d0e5115e0cd17.1564007838.git.jpoimboe@redhat.com
2019-07-24selftests/livepatch: add test skip handlingJoe Lawrence
Add a skip() message function that stops the test, logs an explanation, and sets the "skip" return code (4). Before loading a livepatch self-test kernel module, first verify that we've built and installed it by running a 'modprobe --dry-run'. This should catch a few environment issues, including !CONFIG_LIVEPATCH and !CONFIG_TEST_LIVEPATCH. In these cases, exit gracefully with the new skip() function. Reported-by: Jiri Benc <jbenc@redhat.com> Suggested-by: Shuah Khan <shuah@kernel.org> Reviewed-by: Petr Mladek <pmladek@suse.com> Signed-off-by: Joe Lawrence <joe.lawrence@redhat.com> Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
2019-07-24ktest: Fix some typos in config-bisect.plMasanari Iida
This patch fixes some spelling typos in config-bisect.pl Link: http://lkml.kernel.org/r/20190723032445.14220-1-standby24x7@gmail.com Acked-by: Randy Dunlap <rdunlap@infradead.org> Signed-off-by: Masanari Iida <standby24x7@gmail.com> Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
2019-07-24selftests: mlxsw: Fix typo in qos_mc_aware.shMasanari Iida
This patch fixes some spelling typo in qos_mc_aware.sh Signed-off-by: Masanari Iida <standby24x7@gmail.com> Acked-by: Randy Dunlap <rdunlap@infradead.org> Reviewed-by: Ido Schimmel <idosch@mellanox.com> Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
2019-07-24Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvmLinus Torvalds
Pull KVM fixes from Paolo Bonzini: "Bugfixes, a pvspinlock optimization, and documentation moving" * tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: KVM: X86: Boost queue head vCPU to mitigate lock waiter preemption Documentation: move Documentation/virtual to Documentation/virt KVM: nVMX: Set cached_vmcs12 and cached_shadow_vmcs12 NULL after free KVM: X86: Dynamically allocate user_fpu KVM: X86: Fix fpu state crash in kvm guest Revert "kvm: x86: Use task structs fpu field for user" KVM: nVMX: Clear pending KVM_REQ_GET_VMCS12_PAGES when leaving nested
2019-07-24Documentation: move Documentation/virtual to Documentation/virtChristoph Hellwig
Renaming docs seems to be en vogue at the moment, so fix on of the grossly misnamed directories. We usually never use "virtual" as a shortcut for virtualization in the kernel, but always virt, as seen in the virt/ top-level directory. Fix up the documentation to match that. Fixes: ed16648eb5b8 ("Move kvm, uml, and lguest subdirectories under a common "virtual" directory, I.E:") Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2019-07-23libbpf: fix using uninitialized ioctl resultsIlya Maximets
'channels.max_combined' initialized only on ioctl success and errno is only valid on ioctl failure. The code doesn't produce any runtime issues, but makes memory sanitizers angry: Conditional jump or move depends on uninitialised value(s) at 0x55C056F: xsk_get_max_queues (xsk.c:336) by 0x55C05B2: xsk_create_bpf_maps (xsk.c:354) by 0x55C089F: xsk_setup_xdp_prog (xsk.c:447) by 0x55C0E57: xsk_socket__create (xsk.c:601) Uninitialised value was created by a stack allocation at 0x55C04CD: xsk_get_max_queues (xsk.c:318) Additionally fixed warning on uninitialized bytes in ioctl arguments: Syscall param ioctl(SIOCETHTOOL) points to uninitialised byte(s) at 0x648D45B: ioctl (in /usr/lib64/libc-2.28.so) by 0x55C0546: xsk_get_max_queues (xsk.c:330) by 0x55C05B2: xsk_create_bpf_maps (xsk.c:354) by 0x55C089F: xsk_setup_xdp_prog (xsk.c:447) by 0x55C0E57: xsk_socket__create (xsk.c:601) Address 0x1ffefff378 is on thread 1's stack in frame #1, created by xsk_get_max_queues (xsk.c:318) Uninitialised value was created by a stack allocation at 0x55C04CD: xsk_get_max_queues (xsk.c:318) CC: Magnus Karlsson <magnus.karlsson@intel.com> Fixes: 1cad07884239 ("libbpf: add support for using AF_XDP sockets") Signed-off-by: Ilya Maximets <i.maximets@samsung.com> Acked-by: Andrii Nakryiko <andriin@fb.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2019-07-23Merge tag 'perf-urgent-for-mingo-5.3-20190723' of ↵Ingo Molnar
git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/urgent Pull perf/urgent fixes from Arnaldo Carvalho de Melo: perf.data: Alexey Budankov: - Fix loading of compressed data split across adjacent records Jiri Olsa: - Fix buffer size setting for processing CPU topology perf.data header. perf stat: Jiri Olsa: - Fix segfault for event group in repeat mode Cong Wang: - Always separate "stalled cycles per insn" line, it was being appended to the "instructions" line. perf script: Andi Kleen: - Fix --max-blocks man page description. - Improve man page description of metrics. - Fix off by one in brstackinsn IPC computation. perf probe: Arnaldo Carvalho de Melo: - Avoid calling freeing routine multiple times for same pointer. perf build: - Do not use -Wshadow on gcc < 4.8, avoiding too strict warnings treated as errors, breaking the build. Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: Ingo Molnar <mingo@kernel.org>
2019-07-23selftests/bpf: add another gso_segs accessEric Dumazet
Use BPF_REG_1 for source and destination of gso_segs read, to exercise "bpf: fix access to skb_shared_info->gso_segs" fix. Signed-off-by: Eric Dumazet <edumazet@google.com> Suggested-by: Stanislav Fomichev <sdf@google.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2019-07-23selftests: forwarding: gre_multipath: Fix flower filtersIdo Schimmel
The TC filters used in the test do not work with veth devices because the outer Ethertype is 802.1Q and not IPv4. The test passes with mlxsw netdevs since the hardware always looks at "The first Ethertype that does not point to either: VLAN, CNTAG or configurable Ethertype". Fix this by matching on the VLAN ID instead, but on the ingress side. The reason why this is not performed at egress is explained in the commit cited below. Fixes: 541ad323db3a ("selftests: forwarding: gre_multipath: Update next-hop statistics match criteria") Signed-off-by: Ido Schimmel <idosch@mellanox.com> Reported-by: Stephen Suryaputra <ssuryaextr@gmail.com> Tested-by: Stephen Suryaputra <ssuryaextr@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-07-23selftests: forwarding: gre_multipath: Enable IPv4 forwardingIdo Schimmel
The test did not enable IPv4 forwarding during its setup phase, which causes the test to fail on machines where IPv4 forwarding is disabled. Fixes: 54818c4c4b93 ("selftests: forwarding: Test multipath tunneling") Signed-off-by: Ido Schimmel <idosch@mellanox.com> Reported-by: Stephen Suryaputra <ssuryaextr@gmail.com> Tested-by: Stephen Suryaputra <ssuryaextr@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-07-23selftests/x86: fix spelling mistake "FAILT" -> "FAIL"Colin Ian King
There is an spelling mistake in an a test error message. Fix it. Acked-by: Andy Lutomirski <luto@kernel.org> Signed-off-by: Colin Ian King <colin.king@canonical.com> Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
2019-07-23selftests: kmod: Fix typo in kmod.shMasanari Iida
This patch fixes some spelling typos in kmod.sh Signed-off-by: Masanari Iida <standby24x7@gmail.com> Acked-by: Randy Dunlap <rdunlap@infradead.org> Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
2019-07-23perf build: Do not use -Wshadow on gcc < 4.8Arnaldo Carvalho de Melo
As it is too strict, see https://lkml.org/lkml/2006/11/28/253 and https://gcc.gnu.org/gcc-4.8/changes.html, that takes into account Linus's comments (search for Wshadow) for the reasoning about -Wshadow not being interesting before gcc 4.8. Acked-by: Andrii Nakryiko <andrii.nakryiko@gmail.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Link: https://lkml.kernel.org/r/20190719183417.GQ3624@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-07-23perf probe: Avoid calling freeing routine multiple times for same pointerArnaldo Carvalho de Melo
When perf_add_probe_events() we call cleanup_perf_probe_events() for the pev pointer it receives, then, as part of handling this failure the main 'perf probe' goes on and calls cleanup_params() and that will again call cleanup_perf_probe_events()for the same pointer, so just set nevents to zero when handling the failure of perf_add_probe_events() to avoid the double free. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Masami Hiramatsu <mhiramat@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Link: https://lkml.kernel.org/n/tip-x8qgma4g813z96dvtw9w219q@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-07-23perf probe: Set pev->nargs to zero after freeing pev->args entriesArnaldo Carvalho de Melo
So that, when perf_add_probe_events() fails, like in: # perf probe icmp_rcv:64 "type=icmph->type" Failed to find 'icmph' in this function. Error: Failed to add events. Segmentation fault (core dumped) # We don't segfault. clear_perf_probe_event() was zeroing the whole pev, and since the switch to zfree() for the members in the pev, that memset() was removed, which left nargs with its original value, in the above case 1. With the memset the same pev could be passed to clear_perf_probe_event() multiple times, since all it would have would be zeroes, and free() accepts zero, the loop would not happen and we would just memset it again to zeroes. Without it we got that segfault, so zero nargs to keep it like it was, next cset will avoid calling clear_perf_probe_event() for the same pevs in case of failure. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Masami Hiramatsu <mhiramat@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Fixes: d8f9da240495 ("perf tools: Use zfree() where applicable") Link: https://lkml.kernel.org/n/tip-802f2jypnwqsvyavvivs8464@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-07-23perf session: Fix loading of compressed data split across adjacent recordsAlexey Budankov
Fix decompression failure found during the loading of compressed trace collected on larger scale systems (>48 cores). The error happened due to lack of decompression space for a mmaped buffer data chunk split across adjacent PERF_RECORD_COMPRESSED records. $ perf report -i bt.16384.data --stats failed to decompress (B): 63869 -> 0 : Destination buffer is too small user stack dump failure Can't parse sample, err = -14 0x2637e436 [0x4080]: failed to process type: 9 Error: failed to process sample $ perf test 71 71: Zstd perf.data compression/decompression : Ok Signed-off-by: Alexey Budankov <alexey.budankov@linux.intel.com> Acked-by: Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/4d839e1b-9c48-89c4-9702-a12217420611@linux.intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-07-23perf stat: Always separate stalled cycles per insnCong Wang
The "stalled cycles per insn" is appended to "instructions" when the CPU has this hardware counter directly. We should always make it a separate line, which also aligns to the output when we hit the "if (total && avg)" branch. Before: $ sudo perf stat --all-cpus --field-separator , --log-fd 1 -einstructions,cycles -- sleep 1 4565048704,,instructions,64114578096,100.00,1.34,insn per cycle,, 3396325133,,cycles,64146628546,100.00,, After: $ sudo ./tools/perf/perf stat --all-cpus --field-separator , --log-fd 1 -einstructions,cycles -- sleep 1 6721924,,instructions,24026790339,100.00,0.22,insn per cycle ,,,,,0.00,stalled cycles per insn 30939953,,cycles,24025512526,100.00,, Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com> Acked-by: Jiri Olsa <jolsa@kernel.org> Cc: Andi Kleen <ak@linux.intel.com> Link: http://lkml.kernel.org/r/20190517221039.8975-1-xiyou.wangcong@gmail.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-07-23perf stat: Fix segfault for event group in repeat modeJiri Olsa
Numfor Mbiziwo-Tiapo reported segfault on stat of event group in repeat mode: # perf stat -e '{cycles,instructions}' -r 10 ls It's caused by memory corruption due to not cleaned evsel's id array and index, which needs to be rebuilt in every stat iteration. Currently the ids index grows, while the array (which is also not freed) has the same size. Fixing this by releasing id array and zeroing ids index in perf_evsel__close function. We also need to keep the evsel_list alive for stat record (which is disabled in repeat mode). Reported-by: Numfor Mbiziwo-Tiapo <nums@google.com> Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Ian Rogers <irogers@google.com> Cc: Mark Drayton <mbd@fb.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Song Liu <songliubraving@fb.com> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/r/20190715142121.GC6032@krava Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-07-23perf tools: Fix proper buffer size for feature processingJiri Olsa
After Song Liu's segfault fix for pipe mode, Arnaldo reported following error: # perf record -o - | perf script 0x514 [0x1ac]: failed to process type: 80 It's caused by wrong buffer size setup in feature processing, which makes cpu topology feature fail, because it's using buffer size to recognize its header version. Reported-by: Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: Jiri Olsa <jolsa@kernel.org> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: David Carrillo-Cisneros <davidcc@google.com> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Song Liu <songliubraving@fb.com> Fixes: e9def1b2e74e ("perf tools: Add feature header record to pipe-mode") Link: http://lkml.kernel.org/r/20190715140426.32509-1-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-07-23perf script: Fix off by one in brstackinsn IPC computationAndi Kleen
When we hit the end of a program block, need to count the last instruction too for the IPC computation. This caused large errors for small blocks. % perf script -b ls / > /dev/null Before: % perf script -F +brstackinsn --xed ... 00007f94c9ac70d8 jz 0x7f94c9ac70e3 # PRED 3 cycles [36] 4.33 IPC 00007f94c9ac70e3 testb $0x20, 0x31d(%rbx) 00007f94c9ac70ea jnz 0x7f94c9ac70b0 00007f94c9ac70ec testb $0x8, 0x205ad(%rip) 00007f94c9ac70f3 jz 0x7f94c9ac6ff0 # PRED 1 cycles [37] 3.00 IPC After: % perf script -F +brstackinsn --xed ... 00007f94c9ac70d8 jz 0x7f94c9ac70e3 # PRED 3 cycles [15] 4.67 IPC 00007f94c9ac70e3 testb $0x20, 0x31d(%rbx) 00007f94c9ac70ea jnz 0x7f94c9ac70b0 00007f94c9ac70ec testb $0x8, 0x205ad(%rip) 00007f94c9ac70f3 jz 0x7f94c9ac6ff0 # PRED 1 cycles [16] 4.00 IPC Suggested-by: Denis Bakhvalov <denis.bakhvalov@intel.com> Signed-off-by: Andi Kleen <ak@linux.intel.com> Cc: Jiri Olsa <jolsa@kernel.org> Link: http://lkml.kernel.org/r/20190711181922.18765-2-andi@firstfloor.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-07-23perf script: Improve man page description of metricsAndi Kleen
Clarify that a metric is based on events, not referring to itself. Also some improvements with the sentences. Signed-off-by: Andi Kleen <ak@linux.intel.com> Cc: Jiri Olsa <jolsa@kernel.org> Link: http://lkml.kernel.org/r/20190711181922.18765-3-andi@firstfloor.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-07-23perf script: Fix --max-blocks man page descriptionAndi Kleen
The --max-blocks description was using the old name brstackasm. Use brstackinsn instead. Signed-off-by: Andi Kleen <ak@linux.intel.com> Cc: Jiri Olsa <jolsa@kernel.org> Link: http://lkml.kernel.org/r/20190711181922.18765-1-andi@firstfloor.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-07-22selftests/bpf: fix sendmsg6_prog on s390Ilya Leoshkevich
"sendmsg6: rewrite IP & port (C)" fails on s390, because the code in sendmsg_v6_prog() assumes that (ctx->user_ip6[0] & 0xFFFF) refers to leading IPv6 address digits, which is not the case on big-endian machines. Since checking bitwise operations doesn't seem to be the point of the test, replace two short comparisons with a single int comparison. Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com> Acked-by: Andrey Ignatov <rdna@fb.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2019-07-22libbpf: Avoid designated initializers for unnamed union membersArnaldo Carvalho de Melo
As it fails to build in some systems with: libbpf.c: In function 'perf_buffer__new': libbpf.c:4515: error: unknown field 'sample_period' specified in initializer libbpf.c:4516: error: unknown field 'wakeup_events' specified in initializer Doing as: attr.sample_period = 1; I.e. not as a designated initializer makes it build everywhere. Cc: Andrii Nakryiko <andriin@fb.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Daniel Borkmann <daniel@iogearbox.net> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Fixes: fb84b8224655 ("libbpf: add perf buffer API") Link: https://lkml.kernel.org/n/tip-hnlmch8qit1ieksfppmr32si@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Acked-by: Andrii Nakryiko <andriin@fb.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2019-07-22libbpf: Fix endianness macro usage for some compilersArnaldo Carvalho de Melo
Using endian.h and its endianness macros makes this code build in a wider range of compilers, as some don't have those macros (__BYTE_ORDER__, __ORDER_LITTLE_ENDIAN__, __ORDER_BIG_ENDIAN__), so use instead endian.h's macros (__BYTE_ORDER, __LITTLE_ENDIAN, __BIG_ENDIAN) which makes this code even shorter :-) Acked-by: Andrii Nakryiko <andriin@fb.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Alexei Starovoitov <ast@kernel.org> Cc: Daniel Borkmann <daniel@iogearbox.net> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Fixes: 12ef5634a855 ("libbpf: simplify endianness check") Fixes: e6c64855fd7a ("libbpf: add btf__parse_elf API to load .BTF and .BTF.ext") Link: https://lkml.kernel.org/n/tip-eep5n8vgwcdphw3uc058k03u@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2019-07-22selftests/tls: add shutdown testsJakub Kicinski
Add test for killing the connection via shutdown. Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com> Reviewed-by: Dirk van der Merwe <dirk.vandermerwe@netronome.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2019-07-22selftests/tls: close the socket with open recordJakub Kicinski
Add test which sends some data with MSG_MORE and then closes the socket (never calling send without MSG_MORE). This should make sure we clean up open records correctly. Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com> Reviewed-by: Dirk van der Merwe <dirk.vandermerwe@netronome.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2019-07-22selftests/tls: add a bidirectional testJakub Kicinski
Add a simple test which installs the TLS state for both directions, sends and receives data on both sockets. Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com> Reviewed-by: Dirk van der Merwe <dirk.vandermerwe@netronome.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2019-07-22selftests/tls: test error codes around TLS ULP installationJakub Kicinski
Test the error codes returned when TCP connection is not in ESTABLISHED state. Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com> Reviewed-by: Dirk van der Merwe <dirk.vandermerwe@netronome.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2019-07-22selftests/tls: add a test for ULP but no keysJakub Kicinski
Make sure we test the TLS_BASE/TLS_BASE case both with data and the tear down/clean up path. Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com> Reviewed-by: Dirk van der Merwe <dirk.vandermerwe@netronome.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2019-07-21Merge tag 'ntb-5.3' of git://github.com/jonmason/ntbLinus Torvalds
Pull NTB updates from Jon Mason: "New feature to add support for NTB virtual MSI interrupts, the ability to test and use this feature in the NTB transport layer. Also, bug fixes for the AMD and Switchtec drivers, as well as some general patches" * tag 'ntb-5.3' of git://github.com/jonmason/ntb: (22 commits) NTB: Describe the ntb_msi_test client in the documentation. NTB: Add MSI interrupt support to ntb_transport NTB: Add ntb_msi_test support to ntb_test NTB: Introduce NTB MSI Test Client NTB: Introduce MSI library NTB: Rename ntb.c to support multiple source files in the module NTB: Introduce functions to calculate multi-port resource index NTB: Introduce helper functions to calculate logical port number PCI/switchtec: Add module parameter to request more interrupts PCI/MSI: Support allocating virtual MSI interrupts ntb_hw_switchtec: Fix setup MW with failure bug ntb_hw_switchtec: Skip unnecessary re-setup of shared memory window for crosslink case ntb_hw_switchtec: Remove redundant steps of switchtec_ntb_reinit_peer() function NTB: correct ntb_dev_ops and ntb_dev comment typos NTB: amd: Silence shift wrapping warning in amd_ntb_db_vector_mask() ntb_hw_switchtec: potential shift wrapping bug in switchtec_ntb_init_sndev() NTB: ntb_transport: Ensure qp->tx_mw_dma_addr is initaliazed NTB: ntb_hw_amd: set peer limit register NTB: ntb_perf: Clear stale values in doorbell and command SPAD register NTB: ntb_perf: Disable NTB link after clearing peer XLAT registers ...
2019-07-20Merge branch 'x86-urgent-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull x86 fixes from Thomas Gleixner: "A set of x86 specific fixes and updates: - The CR2 corruption fixes which store CR2 early in the entry code and hand the stored address to the fault handlers. - Revert a forgotten leftover of the dropped FSGSBASE series. - Plug a memory leak in the boot code. - Make the Hyper-V assist functionality robust by zeroing the shadow page. - Remove a useless check for dead processes with LDT - Update paravirt and VMware maintainers entries. - A few cleanup patches addressing various compiler warnings" * 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/entry/64: Prevent clobbering of saved CR2 value x86/hyper-v: Zero out the VP ASSIST PAGE on allocation x86, boot: Remove multiple copy of static function sanitize_boot_params() x86/boot/compressed/64: Remove unused variable x86/boot/efi: Remove unused variables x86/mm, tracing: Fix CR2 corruption x86/entry/64: Update comments and sanity tests for create_gap x86/entry/64: Simplify idtentry a little x86/entry/32: Simplify common_exception x86/paravirt: Make read_cr2() CALLEE_SAVE MAINTAINERS: Update PARAVIRT_OPS_INTERFACE and VMWARE_HYPERVISOR_INTERFACE x86/process: Delete useless check for dead process with LDT x86: math-emu: Hide clang warnings for 16-bit overflow x86/e820: Use proper booleans instead of 0/1 x86/apic: Silence -Wtype-limits compiler warnings x86/mm: Free sme_early_buffer after init x86/boot: Fix memory leak in default_get_smp_config() Revert "x86/ptrace: Prevent ptrace from clearing the FS/GS selector" and fix the test
2019-07-20Merge branch 'perf-urgent-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull perf tooling updates from Thomas Gleixner: "A set of perf improvements and fixes: perf db-export: - Improvements in how COMM details are exported to databases for post processing and use in the sql-viewer.py UI. - Export switch events to the database. BPF: - Bump rlimit(MEMLOCK) for 'perf test bpf' and 'perf trace', just like selftests/bpf/bpf_rlimit.h do, which makes errors due to exhaustion of this limit, which are kinda cryptic (EPERM sometimes) less frequent. perf version: - Fix segfault due to missing OPT_END(), noticed on PowerPC. perf vendor events: - Add JSON files for IBM s/390 machine type 8561. perf cs-etm (ARM): - Fix two cases of error returns not bing done properly: Invalid ERR_PTR() use and loss of propagation error codes" * 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (28 commits) perf version: Fix segfault due to missing OPT_END() perf vendor events s390: Add JSON files for machine type 8561 perf cs-etm: Return errcode in cs_etm__process_auxtrace_info() perf cs-etm: Remove errnoeous ERR_PTR() usage in cs_etm__process_auxtrace_info perf scripts python: export-to-postgresql.py: Export switch events perf scripts python: export-to-sqlite.py: Export switch events perf db-export: Export switch events perf db-export: Factor out db_export__threads() perf script: Add scripting operation process_switch() perf scripts python: exported-sql-viewer.py: Use new 'has_calls' column perf scripts python: exported-sql-viewer.py: Remove redundant semi-colons perf scripts python: export-to-postgresql.py: Add has_calls column to comms table perf scripts python: export-to-sqlite.py: Add has_calls column to comms table perf db-export: Also export thread's current comm perf db-export: Factor out db_export__comm() perf scripts python: export-to-postgresql.py: Export comm details perf scripts python: export-to-sqlite.py: Export comm details perf db-export: Export comm details perf db-export: Fix a white space issue in db_export__sample() perf db-export: Move export__comm_thread into db_export__sample() ...
2019-07-20Merge branch 'core-urgent-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull core fixes from Thomas Gleixner: - A collection of objtool fixes which address recent fallout partially exposed by newer toolchains, clang, BPF and general code changes. - Force USER_DS for user stack traces [ Note: the "objtool fixes" are not all to objtool itself, but for kernel code that triggers objtool warnings. Things like missing function size annotations, or code that confuses the unwinder etc. - Linus] * 'core-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (27 commits) objtool: Support conditional retpolines objtool: Convert insn type to enum objtool: Fix seg fault on bad switch table entry objtool: Support repeated uses of the same C jump table objtool: Refactor jump table code objtool: Refactor sibling call detection logic objtool: Do frame pointer check before dead end check objtool: Change dead_end_function() to return boolean objtool: Warn on zero-length functions objtool: Refactor function alias logic objtool: Track original function across branches objtool: Add mcsafe_handle_tail() to the uaccess safe list bpf: Disable GCC -fgcse optimization for ___bpf_prog_run() x86/uaccess: Remove redundant CLACs in getuser/putuser error paths x86/uaccess: Don't leak AC flag into fentry from mcsafe_handle_tail() x86/uaccess: Remove ELF function annotation from copy_user_handle_tail() x86/head/64: Annotate start_cpu0() as non-callable x86/entry: Fix thunk function ELF sizes x86/kvm: Don't call kvm_spurious_fault() from .fixup x86/kvm: Replace vmx_vmenter()'s call to kvm_spurious_fault() with UD2 ...
2019-07-20Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvmLinus Torvalds
Pull more KVM updates from Paolo Bonzini: "Mostly bugfixes, but also: - s390 support for KVM selftests - LAPIC timer offloading to housekeeping CPUs - Extend an s390 optimization for overcommitted hosts to all architectures - Debugging cleanups and improvements" * tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (25 commits) KVM: x86: Add fixed counters to PMU filter KVM: nVMX: do not use dangling shadow VMCS after guest reset KVM: VMX: dump VMCS on failed entry KVM: x86/vPMU: refine kvm_pmu err msg when event creation failed KVM: s390: Use kvm_vcpu_wake_up in kvm_s390_vcpu_wakeup KVM: Boost vCPUs that are delivering interrupts KVM: selftests: Remove superfluous define from vmx.c KVM: SVM: Fix detection of AMD Errata 1096 KVM: LAPIC: Inject timer interrupt via posted interrupt KVM: LAPIC: Make lapic timer unpinned KVM: x86/vPMU: reset pmc->counter to 0 for pmu fixed_counters KVM: nVMX: Ignore segment base for VMX memory operand when segment not FS or GS kvm: x86: ioapic and apic debug macros cleanup kvm: x86: some tsc debug cleanup kvm: vmx: fix coccinelle warnings x86: kvm: avoid constant-conversion warning x86: kvm: avoid -Wsometimes-uninitized warning KVM: x86: expose AVX512_BF16 feature to guest KVM: selftests: enable pgste option for the linker on s390 KVM: selftests: Move kvm_create_max_vcpus test to generic code ...
2019-07-20Merge tag 'kbuild-v5.3-2' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild Pull more Kbuild updates from Masahiro Yamada: - match the directory structure of the linux-libc-dev package to that of Debian-based distributions - fix incorrect include/config/auto.conf generation when Kconfig creates it along with the .config file - remove misleading $(AS) from documents - clean up precious tag files by distclean instead of mrproper - add a new coccinelle patch for devm_platform_ioremap_resource migration - refactor module-related scripts to read modules.order instead of $(MODVERDIR)/*.mod files to get the list of created modules - remove MODVERDIR - update list of header compile-test - add -fcf-protection=none flag to avoid conflict with the retpoline flags when CONFIG_RETPOLINE=y - misc cleanups * tag 'kbuild-v5.3-2' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: (25 commits) kbuild: add -fcf-protection=none when using retpoline flags kbuild: update compile-test header list for v5.3-rc1 kbuild: split out *.mod out of {single,multi}-used-m rules kbuild: remove 'prepare1' target kbuild: remove the first line of *.mod files kbuild: create *.mod with full directory path and remove MODVERDIR kbuild: export_report: read modules.order instead of .tmp_versions/*.mod kbuild: modpost: read modules.order instead of $(MODVERDIR)/*.mod kbuild: modsign: read modules.order instead of $(MODVERDIR)/*.mod kbuild: modinst: read modules.order instead of $(MODVERDIR)/*.mod scsi: remove pointless $(MODVERDIR)/$(obj)/53c700.ver kbuild: remove duplication from modules.order in sub-directories kbuild: get rid of kernel/ prefix from in-tree modules.{order,builtin} kbuild: do not create empty modules.order in the prepare stage coccinelle: api: add devm_platform_ioremap_resource script kbuild: compile-test headers listed in header-test-m as well kbuild: remove unused hostcc-option kbuild: remove tag files by distclean instead of mrproper kbuild: add --hash-style= and --build-id unconditionally kbuild: get rid of misleading $(AS) from documents ...
2019-07-20KVM: selftests: Remove superfluous define from vmx.cThomas Huth
The code in vmx.c does not use "program_invocation_name", so there is no need to "#define _GNU_SOURCE" here. Signed-off-by: Thomas Huth <thuth@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2019-07-19libbpf: sanitize VAR to conservative 1-byte INTAndrii Nakryiko
If VAR in non-sanitized BTF was size less than 4, converting such VAR into an INT with size=4 will cause BTF validation failure due to violationg of STRUCT (into which DATASEC was converted) member size. Fix by conservatively using size=1. Signed-off-by: Andrii Nakryiko <andriin@fb.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2019-07-19libbpf: fix SIGSEGV when BTF loading fails, but .BTF.ext existsAndrii Nakryiko
In case when BTF loading fails despite sanitization, but BPF object has .BTF.ext loaded as well, we free and null obj->btf, but not obj->btf_ext. This leads to an attempt to relocate .BTF.ext later on during bpf_object__load(), which assumes obj->btf is present. This leads to SIGSEGV on null pointer access. Fix bug by freeing and nulling obj->btf_ext as well. Signed-off-by: Andrii Nakryiko <andriin@fb.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org>
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