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2021-04-10Merge tag 'perf-tools-fixes-for-v5.12-2020-04-09' of ↵Linus Torvalds3-5/+7
git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux Pull perf tool fixes from Arnaldo Carvalho de Melo: - Fix wrong LBR block sorting in 'perf report' - Fix 'perf inject' repipe usage when consuming perf.data files - Avoid potential buffer overrun when decoding ARM SPE hardware tracing packets, bug found using a fuzzer * tag 'perf-tools-fixes-for-v5.12-2020-04-09' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux: perf arm-spe: Avoid potential buffer overrun perf report: Fix wrong LBR block sorting perf inject: Fix repipe usage
2021-04-10Merge tag 'net-5.12-rc7' of ↵Linus Torvalds5-22/+113
git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net Pull networking fixes from Jakub Kicinski: "Networking fixes for 5.12-rc7, including fixes from can, ipsec, mac80211, wireless, and bpf trees. No scary regressions here or in the works, but small fixes for 5.12 changes keep coming. Current release - regressions: - virtio: do not pull payload in skb->head - virtio: ensure mac header is set in virtio_net_hdr_to_skb() - Revert "net: correct sk_acceptq_is_full()" - mptcp: revert "mptcp: provide subflow aware release function" - ethernet: lan743x: fix ethernet frame cutoff issue - dsa: fix type was not set for devlink port - ethtool: remove link_mode param and derive link params from driver - sched: htb: fix null pointer dereference on a null new_q - wireless: iwlwifi: Fix softirq/hardirq disabling in iwl_pcie_enqueue_hcmd() - wireless: iwlwifi: fw: fix notification wait locking - wireless: brcmfmac: p2p: Fix deadlock introduced by avoiding the rtnl dependency Current release - new code bugs: - napi: fix hangup on napi_disable for threaded napi - bpf: take module reference for trampoline in module - wireless: mt76: mt7921: fix airtime reporting and related tx hangs - wireless: iwlwifi: mvm: rfi: don't lock mvm->mutex when sending config command Previous releases - regressions: - rfkill: revert back to old userspace API by default - nfc: fix infinite loop, refcount & memory leaks in LLCP sockets - let skb_orphan_partial wake-up waiters - xfrm/compat: Cleanup WARN()s that can be user-triggered - vxlan, geneve: do not modify the shared tunnel info when PMTU triggers an ICMP reply - can: fix msg_namelen values depending on CAN_REQUIRED_SIZE - can: uapi: mark union inside struct can_frame packed - sched: cls: fix action overwrite reference counting - sched: cls: fix err handler in tcf_action_init() - ethernet: mlxsw: fix ECN marking in tunnel decapsulation - ethernet: nfp: Fix a use after free in nfp_bpf_ctrl_msg_rx - ethernet: i40e: fix receiving of single packets in xsk zero-copy mode - ethernet: cxgb4: avoid collecting SGE_QBASE regs during traffic Previous releases - always broken: - bpf: Refuse non-O_RDWR flags in BPF_OBJ_GET - bpf: Refcount task stack in bpf_get_task_stack - bpf, x86: Validate computation of branch displacements - ieee802154: fix many similar syzbot-found bugs - fix NULL dereferences in netlink attribute handling - reject unsupported operations on monitor interfaces - fix error handling in llsec_key_alloc() - xfrm: make ipv4 pmtu check honor ip header df - xfrm: make hash generation lock per network namespace - xfrm: esp: delete NETIF_F_SCTP_CRC bit from features for esp offload - ethtool: fix incorrect datatype in set_eee ops - xdp: fix xdp_return_frame() kernel BUG throw for page_pool memory model - openvswitch: fix send of uninitialized stack memory in ct limit reply Misc: - udp: add get handling for UDP_GRO sockopt" * tag 'net-5.12-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (182 commits) net: fix hangup on napi_disable for threaded napi net: hns3: Trivial spell fix in hns3 driver lan743x: fix ethernet frame cutoff issue net: ipv6: check for validity before dereferencing cfg->fc_nlinfo.nlh net: dsa: lantiq_gswip: Configure all remaining GSWIP_MII_CFG bits net: dsa: lantiq_gswip: Don't use PHY auto polling net: sched: sch_teql: fix null-pointer dereference ipv6: report errors for iftoken via netlink extack net: sched: fix err handler in tcf_action_init() net: sched: fix action overwrite reference counting Revert "net: sched: bump refcount for new action in ACT replace mode" ice: fix memory leak of aRFS after resuming from suspend i40e: Fix sparse warning: missing error code 'err' i40e: Fix sparse error: 'vsi->netdev' could be null i40e: Fix sparse error: uninitialized symbol 'ring' i40e: Fix sparse errors in i40e_txrx.c i40e: Fix parameters in aq_get_phy_register() nl80211: fix beacon head validation bpf, x86: Validate computation of branch displacements for x86-32 bpf, x86: Validate computation of branch displacements for x86-64 ...
2021-04-07perf arm-spe: Avoid potential buffer overrunIan Rogers1-1/+3
SPE extended headers are > 1 byte so ensure the buffer contains at least this before reading. This issue was detected by fuzzing. Signed-off-by: Ian Rogers <irogers@google.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andre Przywara <andre.przywara@arm.com> Cc: Dave Martin <dave.martin@arm.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Leo Yan <leo.yan@linaro.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Cc: Will Deacon <will@kernel.org> Link: http://lore.kernel.org/lkml/20210407153955.317215-1-irogers@google.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2021-04-07perf report: Fix wrong LBR block sortingJin Yao1-3/+3
When '--total-cycles' is specified, it supports sorting for all blocks by 'Sampled Cycles%'. This is useful to concentrate on the globally hottest blocks. 'Sampled Cycles%' - block sampled cycles aggregation / total sampled cycles But in current code, it doesn't use the cycles aggregation. Part of 'cycles' counting is possibly dropped for some overlap jumps. But for identifying the hot block, we always need the full cycles. # perf record -b ./triad_loop # perf report --total-cycles --stdio Before: # # Sampled Cycles% Sampled Cycles Avg Cycles% Avg Cycles [Program Block Range] Shared Object # ............... .............. ........... .......... ............................................................. ................. # 0.81% 793 4.32% 793 [setup-vdso.h:34 -> setup-vdso.h:40] ld-2.27.so 0.49% 480 0.87% 160 [native_write_msr+0 -> native_write_msr+16] [kernel.kallsyms] 0.48% 476 0.52% 95 [native_read_msr+0 -> native_read_msr+29] [kernel.kallsyms] 0.31% 303 1.65% 303 [nmi_restore+0 -> nmi_restore+37] [kernel.kallsyms] 0.26% 255 1.39% 255 [nohz_balance_exit_idle+75 -> nohz_balance_exit_idle+162] [kernel.kallsyms] 0.24% 234 1.28% 234 [end_repeat_nmi+67 -> end_repeat_nmi+83] [kernel.kallsyms] 0.23% 227 1.24% 227 [__irqentry_text_end+96 -> __irqentry_text_end+126] [kernel.kallsyms] 0.20% 194 1.06% 194 [native_set_debugreg+52 -> native_set_debugreg+56] [kernel.kallsyms] 0.11% 106 0.14% 26 [native_sched_clock+0 -> native_sched_clock+98] [kernel.kallsyms] 0.10% 97 0.53% 97 [trigger_load_balance+0 -> trigger_load_balance+67] [kernel.kallsyms] 0.09% 85 0.46% 85 [get-dynamic-info.h:102 -> get-dynamic-info.h:111] ld-2.27.so ... 0.00% 92.7K 0.02% 4 [triad_loop.c:64 -> triad_loop.c:65] triad_loop The hottest block '[triad_loop.c:64 -> triad_loop.c:65]' is not at the top of output. After: # Sampled Cycles% Sampled Cycles Avg Cycles% Avg Cycles [Program Block Range] Shared Object # ............... .............. ........... .......... .............................................................. ................. # 94.35% 92.7K 0.02% 4 [triad_loop.c:64 -> triad_loop.c:65] triad_loop 0.81% 793 4.32% 793 [setup-vdso.h:34 -> setup-vdso.h:40] ld-2.27.so 0.49% 480 0.87% 160 [native_write_msr+0 -> native_write_msr+16] [kernel.kallsyms] 0.48% 476 0.52% 95 [native_read_msr+0 -> native_read_msr+29] [kernel.kallsyms] 0.31% 303 1.65% 303 [nmi_restore+0 -> nmi_restore+37] [kernel.kallsyms] 0.26% 255 1.39% 255 [nohz_balance_exit_idle+75 -> nohz_balance_exit_idle+162] [kernel.kallsyms] 0.24% 234 1.28% 234 [end_repeat_nmi+67 -> end_repeat_nmi+83] [kernel.kallsyms] 0.23% 227 1.24% 227 [__irqentry_text_end+96 -> __irqentry_text_end+126] [kernel.kallsyms] 0.20% 194 1.06% 194 [native_set_debugreg+52 -> native_set_debugreg+56] [kernel.kallsyms] 0.11% 106 0.14% 26 [native_sched_clock+0 -> native_sched_clock+98] [kernel.kallsyms] 0.10% 97 0.53% 97 [trigger_load_balance+0 -> trigger_load_balance+67] [kernel.kallsyms] 0.09% 85 0.46% 85 [get-dynamic-info.h:102 -> get-dynamic-info.h:111] ld-2.27.so 0.08% 82 0.06% 11 [intel_pmu_drain_pebs_nhm+580 -> intel_pmu_drain_pebs_nhm+627] [kernel.kallsyms] 0.08% 77 0.42% 77 [lru_add_drain_cpu+0 -> lru_add_drain_cpu+133] [kernel.kallsyms] 0.08% 74 0.10% 18 [handle_pmi_common+271 -> handle_pmi_common+310] [kernel.kallsyms] 0.08% 74 0.40% 74 [get-dynamic-info.h:131 -> get-dynamic-info.h:157] ld-2.27.so 0.07% 69 0.09% 17 [intel_pmu_drain_pebs_nhm+432 -> intel_pmu_drain_pebs_nhm+468] [kernel.kallsyms] Now the hottest block is reported at the top of output. Fixes: b65a7d372b1a55db ("perf hist: Support block formats with compare/sort/display") Signed-off-by: Jin Yao <yao.jin@linux.intel.com> Reviewed-by: Andi Kleen <ak@linux.intel.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Jin Yao <yao.jin@intel.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lore.kernel.org/lkml/20210407024452.29988-1-yao.jin@linux.intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2021-04-05perf inject: Fix repipe usageAdrian Hunter1-1/+1
Since commit 14d3d54052539a1e ("perf session: Try to read pipe data from file") 'perf inject' has started printing "PERFILE2h" when not processing pipes. The commit exposed perf to the possiblity that the input is not a pipe but the 'repipe' parameter gets used. That causes the printing because perf inject sets 'repipe' to true always. The 'repipe' parameter of perf_session__new() is used by 2 functions: - perf_file_header__read_pipe() - trace_report() In both cases, the functions copy data to STDOUT_FILENO when 'repipe' is true. Fix by setting 'repipe' to true only if the output is a pipe. Fixes: e558a5bd8b74aff4 ("perf inject: Work with files") Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Acked-by: Jiri Olsa <jolsa@redhat.com> Cc: Andrew Vagin <avagin@openvz.org> Link: http://lore.kernel.org/lkml/20210401103605.9000-1-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2021-04-02Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpfDavid S. Miller4-21/+101
Alexei Starovoitov says: ==================== pull-request: bpf 2021-04-01 The following pull-request contains BPF updates for your *net* tree. We've added 11 non-merge commits during the last 8 day(s) which contain a total of 10 files changed, 151 insertions(+), 26 deletions(-). The main changes are: 1) xsk creation fixes, from Ciara. 2) bpf_get_task_stack fix, from Dave. 3) trampoline in modules fix, from Jiri. 4) bpf_obj_get fix for links and progs, from Lorenz. 5) struct_ops progs must be gpl compatible fix, from Toke. ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
2021-04-02libbpf: Only create rx and tx XDP rings when necessaryCiara Loftus1-2/+11
Prior to this commit xsk_socket__create(_shared) always attempted to create the rx and tx rings for the socket. However this causes an issue when the socket being setup is that which shares the fd with the UMEM. If a previous call to this function failed with this socket after the rings were set up, a subsequent call would always fail because the rings are not torn down after the first call and when we try to set them up again we encounter an error because they already exist. Solve this by remembering whether the rings were set up by introducing new bools to struct xsk_umem which represent the ring setup status and using them to determine whether or not to set up the rings. Fixes: 1cad07884239 ("libbpf: add support for using AF_XDP sockets") Signed-off-by: Ciara Loftus <ciara.loftus@intel.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Link: https://lore.kernel.org/bpf/20210331061218.1647-4-ciara.loftus@intel.com
2021-04-02libbpf: Restore umem state after socket create failureCiara Loftus1-18/+23
If the call to xsk_socket__create fails, the user may want to retry the socket creation using the same umem. Ensure that the umem is in the same state on exit if the call fails by: 1. ensuring the umem _save pointers are unmodified. 2. not unmapping the set of umem rings that were set up with the umem during xsk_umem__create, since those maps existed before the call to xsk_socket__create and should remain in tact even in the event of failure. Fixes: 2f6324a3937f ("libbpf: Support shared umems between queues and devices") Signed-off-by: Ciara Loftus <ciara.loftus@intel.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Link: https://lore.kernel.org/bpf/20210331061218.1647-3-ciara.loftus@intel.com
2021-04-02libbpf: Ensure umem pointer is non-NULL before dereferencingCiara Loftus1-0/+3
Calls to xsk_socket__create dereference the umem to access the fill_save and comp_save pointers. Make sure the umem is non-NULL before doing this. Fixes: 2f6324a3937f ("libbpf: Support shared umems between queues and devices") Signed-off-by: Ciara Loftus <ciara.loftus@intel.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Acked-by: Magnus Karlsson <magnus.karlsson@intel.com> Link: https://lore.kernel.org/bpf/20210331061218.1647-2-ciara.loftus@intel.com
2021-04-01Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvmLinus Torvalds3-7/+17
Pull kvm fixes from Paolo Bonzini: "It's a bit larger than I (and probably you) would like by the time we get to -rc6, but perhaps not entirely unexpected since the changes in the last merge window were larger than usual. x86: - Fixes for missing TLB flushes with TDP MMU - Fixes for race conditions in nested SVM - Fixes for lockdep splat with Xen emulation - Fix for kvmclock underflow - Fix srcdir != builddir builds - Other small cleanups ARM: - Fix GICv3 MMIO compatibility probing - Prevent guests from using the ARMv8.4 self-hosted tracing extension" * tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: selftests: kvm: Check that TSC page value is small after KVM_SET_CLOCK(0) KVM: x86: Prevent 'hv_clock->system_time' from going negative in kvm_guest_time_update() KVM: x86: disable interrupts while pvclock_gtod_sync_lock is taken KVM: x86: reduce pvclock_gtod_sync_lock critical sections KVM: SVM: ensure that EFER.SVME is set when running nested guest or on nested vmexit KVM: SVM: load control fields from VMCB12 before checking them KVM: x86/mmu: Don't allow TDP MMU to yield when recovering NX pages KVM: x86/mmu: Ensure TLBs are flushed for TDP MMU during NX zapping KVM: x86/mmu: Ensure TLBs are flushed when yielding during GFN range zap KVM: make: Fix out-of-source module builds selftests: kvm: make hardware_disable_test less verbose KVM: x86/vPMU: Forbid writing to MSR_F15H_PERF MSRs when guest doesn't have X86_FEATURE_PERFCTR_CORE KVM: x86: remove unused declaration of kvm_write_tsc() KVM: clean up the unused argument tools/kvm_stat: Add restart delay KVM: arm64: Fix CPU interface MMIO compatibility detection KVM: arm64: Disable guest access to trace filter controls KVM: arm64: Hide system instruction access to Trace registers
2021-04-01idr test suite: Improve reporting from idr_find_test_1Matthew Wilcox (Oracle)1-1/+10
Instead of just reporting an assertion failure, report enough information that we can start diagnosing exactly went wrong. Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
2021-04-01idr test suite: Create anchor before launching throbberMatthew Wilcox (Oracle)1-2/+2
The throbber could race with creation of the anchor entry and cause the IDR to have zero entries in it, which would cause the test to fail. Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
2021-04-01idr test suite: Take RCU read lock in idr_find_test_1Matthew Wilcox (Oracle)1-0/+4
When run on a single CPU, this test would frequently access already-freed memory. Due to timing, this bug never showed up on multi-CPU tests. Reported-by: Chris von Recklinghausen <crecklin@redhat.com> Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
2021-04-01radix tree test suite: Register the main thread with the RCU libraryMatthew Wilcox (Oracle)3-0/+6
Several test runners register individual worker threads with the RCU library, but neglect to register the main thread, which can lead to objects being freed while the main thread is in what appears to be an RCU critical section. Reported-by: Chris von Recklinghausen <crecklin@redhat.com> Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
2021-04-01selftests: kvm: Check that TSC page value is small after KVM_SET_CLOCK(0)Vitaly Kuznetsov1-2/+11
Add a test for the issue when KVM_SET_CLOCK(0) call could cause TSC page value to go very big because of a signedness issue around hv_clock->system_time. Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com> Message-Id: <20210326155551.17446-3-vkuznets@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2021-03-30radix tree test suite: Fix compilationMatthew Wilcox (Oracle)1-0/+0
Commit 4bba4c4bb09a added tools/include/linux/compiler_types.h which includes linux/compiler-gcc.h. Unfortunately, we had our own (empty) compiler_types.h which overrode the one added by that commit, and so we lost the definition of __must_be_array(). Removing our empty compiler_types.h fixes the problem and reduces our divergence from the rest of the tools. Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
2021-03-30selftests: kvm: make hardware_disable_test less verboseVitaly Kuznetsov1-5/+5
hardware_disable_test produces 512 snippets like ... main: [511] waiting semaphore run_test: [511] start vcpus run_test: [511] all threads launched main: [511] waiting 368us main: [511] killing child and this doesn't have much value, let's print this info with pr_debug(). Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com> Message-Id: <20210323104331.1354800-1-vkuznets@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2021-03-30tools/kvm_stat: Add restart delayStefan Raspl1-0/+1
If this service is enabled and the system rebooted, Systemd's initial attempt to start this unit file may fail in case the kvm module is not loaded. Since we did not specify a delay for the retries, Systemd restarts with a minimum delay a number of times before giving up and disabling the service. Which means a subsequent kvm module load will have kvm running without monitoring. Adding a delay to fix this. Signed-off-by: Stefan Raspl <raspl@linux.ibm.com> Message-Id: <20210325122949.1433271-1-raspl@linux.ibm.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2021-03-29selftests: forwarding: vxlan_bridge_1d: Add more ECN decap test casesIdo Schimmel1-1/+12
Test that all possible combinations of inner and outer ECN bits result in the correct inner ECN marking according to RFC 6040 4.2. Signed-off-by: Ido Schimmel <idosch@nvidia.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-03-28Merge tag 'perf-tools-fixes-for-v5.12-2020-03-28' of ↵Linus Torvalds11-45/+105
git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux Pull perf tooling fixes from Arnaldo Carvalho de Melo: - Avoid write of uninitialized memory when generating PERF_RECORD_MMAP* records. - Fix 'perf top' BPF support related crash with perf_event_paranoid=3 + kptr_restrict. - Validate raw event with sysfs exported format bits. - Fix waipid on SIGCHLD delivery bugs in 'perf daemon'. - Change to use bash for daemon test on Debian, where the default is dash and thus fails for use of bashisms in this test. - Fix memory leak in vDSO found using ASAN. - Remove now useless (due to the fact that BPF now supports static vars) failing sub test "BPF relocation checker". - Fix auxtrace queue conflict. - Sync linux/kvm.h with the kernel sources. * tag 'perf-tools-fixes-for-v5.12-2020-03-28' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux: perf test: Change to use bash for daemon test perf record: Fix memory leak in vDSO found using ASAN perf test: Remove now useless failing sub test "BPF relocation checker" perf daemon: Return from kill functions perf daemon: Force waipid for all session on SIGCHLD delivery perf top: Fix BPF support related crash with perf_event_paranoid=3 + kptr_restrict perf pmu: Validate raw event with sysfs exported format bits perf synthetic events: Avoid write of uninitialized memory when generating PERF_RECORD_MMAP* records tools headers UAPI: Sync linux/kvm.h with the kernel sources perf synthetic-events: Fix uninitialized 'kernel_thread' variable perf auxtrace: Fix auxtrace queue conflict
2021-03-26bpf/selftests: Test that kernel rejects a TCP CC with an invalid licenseToke Høiland-Jørgensen2-0/+63
This adds a selftest to check that the verifier rejects a TCP CC struct_ops with a non-GPL license. Signed-off-by: Toke Høiland-Jørgensen <toke@redhat.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: Martin KaFai Lau <kafai@fb.com> Link: https://lore.kernel.org/bpf/20210326100314.121853-2-toke@redhat.com
2021-03-26perf test: Change to use bash for daemon testLeo Yan1-1/+1
When executing the daemon test on Arm64 and x86 with Debian (Buster) distro, both skip the test case with the log: # ./perf test -v 76 76: daemon operations : --- start --- test child forked, pid 11687 test daemon list trap: SIGINT: bad trap ./tests/shell/daemon.sh: 173: local: cpu-clock: bad variable name test child finished with -2 ---- end ---- daemon operations: Skip So the error happens for the variable expansion when use local variable in the shell script. Since Debian Buster uses dash but not bash as non-interactive shell, when execute the daemon testing, it hits a known issue for dash which was reported [1]. To resolve this issue, one option is to add double quotes for all local variables assignment, so need to change the code from: local line=`perf daemon --config ${config} -x: | head -2 | tail -1` ... to: local line="`perf daemon --config ${config} -x: | head -2 | tail -1`" But the testing script has bunch of local variables, this leads to big changes for whole script. On the other hand, the testing script asks to use the "local" feature which is bash-specific, so this patch explicitly uses "#!/bin/bash" to ensure running the script with bash. After: # ./perf test -v 76 76: daemon operations : --- start --- test child forked, pid 11329 test daemon list test daemon reconfig test daemon stop test daemon signal signal 12 sent to session 'test [11596]' signal 12 sent to session 'test [11596]' test daemon ping test daemon lock test child finished with 0 ---- end ---- daemon operations: Ok [1] https://bugs.launchpad.net/ubuntu/+source/dash/+bug/139097 Fixes: 2291bb915b55 ("perf tests: Add daemon 'list' command test") Signed-off-by: Leo Yan <leo.yan@linaro.org> Acked-by: Namhyung Kim <namhyung@kernel.org> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Ian Rogers <irogers@google.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lore.kernel.org/lkml/20210320104554.529213-1-leo.yan@linaro.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2021-03-26libbpf: Fix bail out from 'ringbuf_process_ring()' on errorPedro Tammela1-1/+1
The current code bails out with negative and positive returns. If the callback returns a positive return code, 'ring_buffer__consume()' and 'ring_buffer__poll()' will return a spurious number of records consumed, but mostly important will continue the processing loop. This patch makes positive returns from the callback a no-op. Fixes: bf99c936f947 ("libbpf: Add BPF ring buffer support") Signed-off-by: Pedro Tammela <pctammela@mojatatu.com> Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Link: https://lore.kernel.org/bpf/20210325150115.138750-1-pctammela@mojatatu.com
2021-03-25Merge branch 'akpm' (patches from Andrew)Linus Torvalds1-2/+2
Merge misc fixes from Andrew Morton: "14 patches. Subsystems affected by this patch series: mm (hugetlb, kasan, gup, selftests, z3fold, kfence, memblock, and highmem), squashfs, ia64, gcov, and mailmap" * emailed patches from Andrew Morton <akpm@linux-foundation.org>: mailmap: update Andrey Konovalov's email address mm/highmem: fix CONFIG_DEBUG_KMAP_LOCAL_FORCE_MAP mm: memblock: fix section mismatch warning again kfence: make compatible with kmemleak gcov: fix clang-11+ support ia64: fix format strings for err_inject ia64: mca: allocate early mca with GFP_ATOMIC squashfs: fix xattr id and id lookup sanity checks squashfs: fix inode lookup sanity checks z3fold: prevent reclaim/free race for headless pages selftests/vm: fix out-of-tree build mm/mmu_notifiers: ensure range_end() is paired with range_start() kasan: fix per-page tags for non-page_alloc pages hugetlb_cgroup: fix imbalanced css_get and css_put pair for shared mappings
2021-03-25Merge tag 'arm64-fixes' of ↵Linus Torvalds1-5/+17
git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux Pull arm64 fixes from Will Deacon: "Minor fixes all over, ranging from typos to tests to errata workarounds: - Fix possible memory hotplug failure with KASLR - Fix FFR value in SVE kselftest - Fix backtraces reported in /proc/$pid/stack - Disable broken CnP implementation on NVIDIA Carmel - Typo fixes and ACPI documentation clarification - Fix some W=1 warnings" * tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux: arm64: kernel: disable CNP on Carmel arm64/process.c: fix Wmissing-prototypes build warnings kselftest/arm64: sve: Do not use non-canonical FFR register value arm64: mm: correct the inside linear map range during hotplug check arm64: kdump: update ppos when reading elfcorehdr arm64: cpuinfo: Fix a typo Documentation: arm64/acpi : clarify arm64 support of IBFT arm64: stacktrace: don't trace arch_stack_walk() arm64: csum: cast to the proper type
2021-03-25selftests/vm: fix out-of-tree buildRong Chen1-2/+2
When building out-of-tree, attempting to make target from $(OUTPUT) directory: make[1]: *** No rule to make target '$(OUTPUT)/protection_keys.c', needed by '$(OUTPUT)/protection_keys_32'. Link: https://lkml.kernel.org/r/20210315094700.522753-1-rong.a.chen@intel.com Signed-off-by: Rong Chen <rong.a.chen@intel.com> Reported-by: kernel test robot <lkp@intel.com> Cc: Shuah Khan <shuah@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2021-03-25Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/netLinus Torvalds17-45/+320
Pull networking fixes from David Miller: "Various fixes, all over: 1) Fix overflow in ptp_qoriq_adjfine(), from Yangbo Lu. 2) Always store the rx queue mapping in veth, from Maciej Fijalkowski. 3) Don't allow vmlinux btf in map_create, from Alexei Starovoitov. 4) Fix memory leak in octeontx2-af from Colin Ian King. 5) Use kvalloc in bpf x86 JIT for storing jit'd addresses, from Yonghong Song. 6) Fix tx ptp stats in mlx5, from Aya Levin. 7) Check correct ip version in tun decap, fropm Roi Dayan. 8) Fix rate calculation in mlx5 E-Switch code, from arav Pandit. 9) Work item memork leak in mlx5, from Shay Drory. 10) Fix ip6ip6 tunnel crash with bpf, from Daniel Borkmann. 11) Lack of preemptrion awareness in macvlan, from Eric Dumazet. 12) Fix data race in pxa168_eth, from Pavel Andrianov. 13) Range validate stab in red_check_params(), from Eric Dumazet. 14) Inherit vlan filtering setting properly in b53 driver, from Florian Fainelli. 15) Fix rtnl locking in igc driver, from Sasha Neftin. 16) Pause handling fixes in igc driver, from Muhammad Husaini Zulkifli. 17) Missing rtnl locking in e1000_reset_task, from Vitaly Lifshits. 18) Use after free in qlcnic, from Lv Yunlong. 19) fix crash in fritzpci mISDN, from Tong Zhang. 20) Premature rx buffer reuse in igb, from Li RongQing. 21) Missing termination of ip[a driver message handler arrays, from Alex Elder. 22) Fix race between "x25_close" and "x25_xmit"/"x25_rx" in hdlc_x25 driver, from Xie He. 23) Use after free in c_can_pci_remove(), from Tong Zhang. 24) Uninitialized variable use in nl80211, from Jarod Wilson. 25) Off by one size calc in bpf verifier, from Piotr Krysiuk. 26) Use delayed work instead of deferrable for flowtable GC, from Yinjun Zhang. 27) Fix infinite loop in NPC unmap of octeontx2 driver, from Hariprasad Kelam. 28) Fix being unable to change MTU of dwmac-sun8i devices due to lack of fifo sizes, from Corentin Labbe. 29) DMA use after free in r8169 with WoL, fom Heiner Kallweit. 30) Mismatched prototypes in isdn-capi, from Arnd Bergmann. 31) Fix psample UAPI breakage, from Ido Schimmel" * git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (171 commits) psample: Fix user API breakage math: Export mul_u64_u64_div_u64 ch_ktls: fix enum-conversion warning octeontx2-af: Fix memory leak of object buf ptp_qoriq: fix overflow in ptp_qoriq_adjfine() u64 calcalation net: bridge: don't notify switchdev for local FDB addresses net/sched: act_ct: clear post_ct if doing ct_clear net: dsa: don't assign an error value to tag_ops isdn: capi: fix mismatched prototypes net/mlx5: SF, do not use ecpu bit for vhca state processing net/mlx5e: Fix division by 0 in mlx5e_select_queue net/mlx5e: Fix error path for ethtool set-priv-flag net/mlx5e: Offload tuple rewrite for non-CT flows net/mlx5e: Allow to match on MPLS parameters only for MPLS over UDP net/mlx5: Add back multicast stats for uplink representor net: ipconfig: ic_dev can be NULL in ic_close_devs MAINTAINERS: Combine "QLOGIC QLGE 10Gb ETHERNET DRIVER" sections into one docs: networking: Fix a typo r8169: fix DMA being used after buffer free if WoL is enabled net: ipa: fix init header command validation ...
2021-03-24perf record: Fix memory leak in vDSO found using ASANNamhyung Kim1-0/+2
I got several memory leak reports from Asan with a simple command. It was because VDSO is not released due to the refcount. Like in __dsos_addnew_id(), it should put the refcount after adding to the list. $ perf record true [ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 0.030 MB perf.data (10 samples) ] ================================================================= ==692599==ERROR: LeakSanitizer: detected memory leaks Direct leak of 439 byte(s) in 1 object(s) allocated from: #0 0x7fea52341037 in __interceptor_calloc ../../../../src/libsanitizer/asan/asan_malloc_linux.cpp:154 #1 0x559bce4aa8ee in dso__new_id util/dso.c:1256 #2 0x559bce59245a in __machine__addnew_vdso util/vdso.c:132 #3 0x559bce59245a in machine__findnew_vdso util/vdso.c:347 #4 0x559bce50826c in map__new util/map.c:175 #5 0x559bce503c92 in machine__process_mmap2_event util/machine.c:1787 #6 0x559bce512f6b in machines__deliver_event util/session.c:1481 #7 0x559bce515107 in perf_session__deliver_event util/session.c:1551 #8 0x559bce51d4d2 in do_flush util/ordered-events.c:244 #9 0x559bce51d4d2 in __ordered_events__flush util/ordered-events.c:323 #10 0x559bce519bea in __perf_session__process_events util/session.c:2268 #11 0x559bce519bea in perf_session__process_events util/session.c:2297 #12 0x559bce2e7a52 in process_buildids /home/namhyung/project/linux/tools/perf/builtin-record.c:1017 #13 0x559bce2e7a52 in record__finish_output /home/namhyung/project/linux/tools/perf/builtin-record.c:1234 #14 0x559bce2ed4f6 in __cmd_record /home/namhyung/project/linux/tools/perf/builtin-record.c:2026 #15 0x559bce2ed4f6 in cmd_record /home/namhyung/project/linux/tools/perf/builtin-record.c:2858 #16 0x559bce422db4 in run_builtin /home/namhyung/project/linux/tools/perf/perf.c:313 #17 0x559bce2acac8 in handle_internal_command /home/namhyung/project/linux/tools/perf/perf.c:365 #18 0x559bce2acac8 in run_argv /home/namhyung/project/linux/tools/perf/perf.c:409 #19 0x559bce2acac8 in main /home/namhyung/project/linux/tools/perf/perf.c:539 #20 0x7fea51e76d09 in __libc_start_main ../csu/libc-start.c:308 Indirect leak of 32 byte(s) in 1 object(s) allocated from: #0 0x7fea52341037 in __interceptor_calloc ../../../../src/libsanitizer/asan/asan_malloc_linux.cpp:154 #1 0x559bce520907 in nsinfo__copy util/namespaces.c:169 #2 0x559bce50821b in map__new util/map.c:168 #3 0x559bce503c92 in machine__process_mmap2_event util/machine.c:1787 #4 0x559bce512f6b in machines__deliver_event util/session.c:1481 #5 0x559bce515107 in perf_session__deliver_event util/session.c:1551 #6 0x559bce51d4d2 in do_flush util/ordered-events.c:244 #7 0x559bce51d4d2 in __ordered_events__flush util/ordered-events.c:323 #8 0x559bce519bea in __perf_session__process_events util/session.c:2268 #9 0x559bce519bea in perf_session__process_events util/session.c:2297 #10 0x559bce2e7a52 in process_buildids /home/namhyung/project/linux/tools/perf/builtin-record.c:1017 #11 0x559bce2e7a52 in record__finish_output /home/namhyung/project/linux/tools/perf/builtin-record.c:1234 #12 0x559bce2ed4f6 in __cmd_record /home/namhyung/project/linux/tools/perf/builtin-record.c:2026 #13 0x559bce2ed4f6 in cmd_record /home/namhyung/project/linux/tools/perf/builtin-record.c:2858 #14 0x559bce422db4 in run_builtin /home/namhyung/project/linux/tools/perf/perf.c:313 #15 0x559bce2acac8 in handle_internal_command /home/namhyung/project/linux/tools/perf/perf.c:365 #16 0x559bce2acac8 in run_argv /home/namhyung/project/linux/tools/perf/perf.c:409 #17 0x559bce2acac8 in main /home/namhyung/project/linux/tools/perf/perf.c:539 #18 0x7fea51e76d09 in __libc_start_main ../csu/libc-start.c:308 SUMMARY: AddressSanitizer: 471 byte(s) leaked in 2 allocation(s). Signed-off-by: Namhyung Kim <namhyung@kernel.org> Acked-by: Jiri Olsa <jolsa@redhat.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Ian Rogers <irogers@google.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lore.kernel.org/lkml/20210315045641.700430-1-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2021-03-24perf test: Remove now useless failing sub test "BPF relocation checker"Thomas Richter1-8/+1
For some time now the 'perf test 42: BPF filter' returns an error on bpf relocation subtest, at least on x86 and s390. This is caused by d859900c4c56dc4f ("bpf, libbpf: support global data/bss/rodata sections") which introduces support for global variables in eBPF programs. Perf test 42.4 checks that the eBPF relocation fails when the eBPF program contains a global variable. It returns OK when the eBPF program could not be loaded and FAILED otherwise. With above commit the test logic for the eBPF relocation is obsolete. The loading of the eBPF now succeeds and the test always shows FAILED. This patch removes the sub test completely. Also a lot of eBPF program testing is done in the eBPF test suite, it also contains tests for global variables. Output before: 42: BPF filter : 42.1: Basic BPF filtering : Ok 42.2: BPF pinning : Ok 42.3: BPF prologue generation : Ok 42.4: BPF relocation checker : Failed # Output after: # ./perf test -F 42 42: BPF filter : 42.1: Basic BPF filtering : Ok 42.2: BPF pinning : Ok 42.3: BPF prologue generation : Ok # Signed-off-by: Thomas Richter <tmricht@linux.ibm.com> Suggested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Heiko Carstens <hca@linux.ibm.com> Cc: Sumanth Korikkar <sumanthk@linux.ibm.com> Cc: Sven Schnelle <svens@linux.ibm.com> Cc: Vasily Gorbik <gor@linux.ibm.com> Link: http://lore.kernel.org/lkml/20210324083734.1953123-1-tmricht@linux.ibm.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2021-03-24perf daemon: Return from kill functionsJiri Olsa1-2/+5
We should return correctly and warn in both daemon_session__kill() and daemon__kill() after we tried everything to kill sessions. The current code will keep on looping and waiting. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Ian Rogers <irogers@google.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Michael Petlan <mpetlan@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lore.kernel.org/lkml/20210320221013.1619613-2-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2021-03-24perf daemon: Force waipid for all session on SIGCHLD deliveryJiri Olsa1-22/+28
If we don't process SIGCHLD before another comes, we will see just one SIGCHLD as a result. In this case current code will miss exit notification for a session and wait forever. Adding extra waitpid check for all sessions when SIGCHLD is received, to make sure we don't miss any session exit. Also fix close condition for signal_fd. Reported-by: Ian Rogers <irogers@google.com> Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Michael Petlan <mpetlan@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lore.kernel.org/lkml/20210320221013.1619613-1-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2021-03-23Merge tag 'linux-kselftest-kunit-fixes-5.12-rc5.1' of ↵Linus Torvalds2-1/+3
git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest Pull KUnit fixes from Shuah Khan: "Two fixes to the kunit tool from David Gow" * tag 'linux-kselftest-kunit-fixes-5.12-rc5.1' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest: kunit: tool: Disable PAGE_POISONING under --alltests kunit: tool: Fix a python tuple typing error
2021-03-22kselftest/arm64: sve: Do not use non-canonical FFR register valueAndre Przywara1-5/+17
The "First Fault Register" (FFR) is an SVE register that mimics a predicate register, but clears bits when a load or store fails to handle an element of a vector. The supposed usage scenario is to initialise this register (using SETFFR), then *read* it later on to learn about elements that failed to load or store. Explicit writes to this register using the WRFFR instruction are only supposed to *restore* values previously read from the register (for context-switching only). As the manual describes, this register holds only certain values, it: "... contains a monotonic predicate value, in which starting from bit 0 there are zero or more 1 bits, followed only by 0 bits in any remaining bit positions." Any other value is UNPREDICTABLE and is not supposed to be "restored" into the register. The SVE test currently tries to write a signature pattern into the register, which is *not* a canonical FFR value. Apparently the existing setups treat UNPREDICTABLE as "read-as-written", but a new implementation actually only stores canonical values. As a consequence, the sve-test fails immediately when comparing the FFR value: ----------- # ./sve-test Vector length: 128 bits PID: 207 Mismatch: PID=207, iteration=0, reg=48 Expected [cf00] Got [0f00] Aborted ----------- Fix this by only populating the FFR with proper canonical values. Effectively the requirement described above limits us to 17 unique values over 16 bits worth of FFR, so we condense our signature down to 4 bits (2 bits from the PID, 2 bits from the generation) and generate the canonical pattern from it. Any bits describing elements above the minimum 128 bit are set to 0. This aligns the FFR usage to the architecture and fixes the test on microarchitectures implementing FFR in a more restricted way. Signed-off-by: Andre Przywara <andre.przywara@arm.com> Reviwed-by: Mark Brown <broonie@kernel.org> Link: https://lore.kernel.org/r/20210319120128.29452-1-andre.przywara@arm.com Signed-off-by: Will Deacon <will@kernel.org>
2021-03-21Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpfDavid S. Miller4-1/+122
Alexei Starovoitov says: ==================== pull-request: bpf 2021-03-20 The following pull-request contains BPF updates for your *net* tree. We've added 5 non-merge commits during the last 3 day(s) which contain a total of 8 files changed, 155 insertions(+), 12 deletions(-). The main changes are: 1) Use correct nops in fexit trampoline, from Stanislav. 2) Fix BTF dump, from Jean-Philippe. 3) Fix umd memory leak, from Zqiang. ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
2021-03-20selftests/bpf: Add selftest for pointer-to-array-of-struct BTF dumpJean-Philippe Brucker1-0/+8
Bpftool used to issue forward declarations for a struct used as part of a pointer to array, which is invalid. Add a test to check that the struct is fully defined in this case: @@ -134,9 +134,9 @@ }; }; -struct struct_in_array {}; +struct struct_in_array; -struct struct_in_array_typed {}; +struct struct_in_array_typed; typedef struct struct_in_array_typed struct_in_array_t[2]; @@ -189,3 +189,7 @@ struct struct_with_embedded_stuff _14; }; +struct struct_in_array {}; + +struct struct_in_array_typed {}; + ... #13/1 btf_dump: syntax:FAIL Suggested-by: Andrii Nakryiko <andrii.nakryiko@gmail.com> Signed-off-by: Jean-Philippe Brucker <jean-philippe@linaro.org> Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Link: https://lore.kernel.org/bpf/20210319112554.794552-3-jean-philippe@linaro.org
2021-03-20libbpf: Fix BTF dump of pointer-to-array-of-structJean-Philippe Brucker1-1/+1
The vmlinux.h generated from BTF is invalid when building drivers/phy/ti/phy-gmii-sel.c with clang: vmlinux.h:61702:27: error: array type has incomplete element type ‘struct reg_field’ 61702 | const struct reg_field (*regfields)[3]; | ^~~~~~~~~ bpftool generates a forward declaration for this struct regfield, which compilers aren't happy about. Here's a simplified reproducer: struct inner { int val; }; struct outer { struct inner (*ptr_to_array)[2]; } A; After build with clang -> bpftool btf dump c -> clang/gcc: ./def-clang.h:11:23: error: array has incomplete element type 'struct inner' struct inner (*ptr_to_array)[2]; Member ptr_to_array of struct outer is a pointer to an array of struct inner. In the DWARF generated by clang, struct outer appears before struct inner, so when converting BTF of struct outer into C, bpftool issues a forward declaration to struct inner. With GCC the DWARF info is reversed so struct inner gets fully defined. That forward declaration is not sufficient when compilers handle an array of the struct, even when it's only used through a pointer. Note that we can trigger the same issue with an intermediate typedef: struct inner { int val; }; typedef struct inner inner2_t[2]; struct outer { inner2_t *ptr_to_array; } A; Becomes: struct inner; typedef struct inner inner2_t[2]; And causes: ./def-clang.h:10:30: error: array has incomplete element type 'struct inner' typedef struct inner inner2_t[2]; To fix this, clear through_ptr whenever we encounter an intermediate array, to make the inner struct part of a strong link and force full declaration. Fixes: 351131b51c7a ("libbpf: add btf_dump API for BTF-to-C conversion") Signed-off-by: Jean-Philippe Brucker <jean-philippe@linaro.org> Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Link: https://lore.kernel.org/bpf/20210319112554.794552-2-jean-philippe@linaro.org
2021-03-19selftests: forwarding: vxlan_bridge_1d: Fix vxlan ecn decapsulate valueHangbin Liu1-1/+1
The ECN bit defines ECT(1) = 1, ECT(0) = 2. So inner 0x02 + outer 0x01 should be inner ECT(0) + outer ECT(1). Based on the description of __INET_ECN_decapsulate, the final decapsulate value should be ECT(1). So fix the test expect value to 0x01. Before the fix: TEST: VXLAN: ECN decap: 01/02->0x02 [FAIL] Expected to capture 10 packets, got 0. After the fix: TEST: VXLAN: ECN decap: 01/02->0x01 [ OK ] Fixes: a0b61f3d8ebf ("selftests: forwarding: vxlan_bridge_1d: Add an ECN decap test") Signed-off-by: Hangbin Liu <liuhangbin@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-03-18selftests: kvm: add set_boot_cpu_id testEmanuele Giuseppe Esposito3-0/+168
Test for the KVM_SET_BOOT_CPU_ID ioctl. Check that it correctly allows to change the BSP vcpu. Signed-off-by: Emanuele Giuseppe Esposito <eesposit@redhat.com> Message-Id: <20210318151624.490861-2-eesposit@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2021-03-18selftests: kvm: add _vm_ioctlEmanuele Giuseppe Esposito2-1/+7
As in kvm_ioctl and _kvm_ioctl, add the respective _vm_ioctl for vm_ioctl. _vm_ioctl invokes an ioctl using the vm fd, leaving the caller to test the result. Signed-off-by: Emanuele Giuseppe Esposito <eesposit@redhat.com> Message-Id: <20210318151624.490861-1-eesposit@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2021-03-18selftests: kvm: add get_msr_index_featuresEmanuele Giuseppe Esposito5-2/+137
Test the KVM_GET_MSR_FEATURE_INDEX_LIST and KVM_GET_MSR_INDEX_LIST ioctls. Signed-off-by: Emanuele Giuseppe Esposito <eesposit@redhat.com> Message-Id: <20210318145629.486450-1-eesposit@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2021-03-18selftest/bpf: Add a test to check trampoline freeing logic.Alexei Starovoitov2-0/+113
Add a selftest for commit e21aa341785c ("bpf: Fix fexit trampoline.") to make sure that attaching fexit prog to a sleeping kernel function will trigger appropriate trampoline and program destruction. Signed-off-by: Alexei Starovoitov <ast@kernel.org> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Link: https://lore.kernel.org/bpf/20210318004523.55908-1-alexei.starovoitov@gmail.com
2021-03-18selftests: kvm: Add basic Hyper-V clocksources testsVitaly Kuznetsov3-0/+262
Introduce a new selftest for Hyper-V clocksources (MSR-based reference TSC and TSC page). As a starting point, test the following: 1) Reference TSC is 1Ghz clock. 2) Reference TSC and TSC page give the same reading. 3) TSC page gets updated upon KVM_SET_CLOCK call. 4) TSC page does not get updated when guest opted for reenlightenment. 5) Disabled TSC page doesn't get updated. Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com> Message-Id: <20210318140949.1065740-1-vkuznets@redhat.com> [Add a host-side test using TSC + KVM_GET_MSR too. - Paolo] Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2021-03-18Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpfDavid S. Miller7-16/+64
Daniel Borkmann says: ==================== pull-request: bpf 2021-03-18 The following pull-request contains BPF updates for your *net* tree. We've added 10 non-merge commits during the last 4 day(s) which contain a total of 14 files changed, 336 insertions(+), 94 deletions(-). The main changes are: 1) Fix fexit/fmod_ret trampoline for sleepable programs, and also fix a ftrace splat in modify_ftrace_direct() on address change, from Alexei Starovoitov. 2) Fix two oob speculation possibilities that allows unprivileged to leak mem via side-channel, from Piotr Krysiuk and Daniel Borkmann. 3) Fix libbpf's netlink handling wrt SOCK_CLOEXEC, from Kumar Kartikeya Dwivedi. 4) Fix libbpf's error handling on failure in getting section names, from Namhyung Kim. 5) Fix tunnel collect_md BPF selftest wrt Geneve option handling, from Hangbin Liu. ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
2021-03-18libbpf: Use SOCK_CLOEXEC when opening the netlink socketKumar Kartikeya Dwivedi1-1/+1
Otherwise, there exists a small window between the opening and closing of the socket fd where it may leak into processes launched by some other thread. Fixes: 949abbe88436 ("libbpf: add function to setup XDP") Signed-off-by: Kumar Kartikeya Dwivedi <memxor@gmail.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: Toke Høiland-Jørgensen <toke@redhat.com> Link: https://lore.kernel.org/bpf/20210317115857.6536-1-memxor@gmail.com
2021-03-18libbpf: Fix error path in bpf_object__elf_init()Namhyung Kim1-1/+2
When it failed to get section names, it should call into bpf_object__elf_finish() like others. Fixes: 88a82120282b ("libbpf: Factor out common ELF operations and improve logging") Signed-off-by: Namhyung Kim <namhyung@kernel.org> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Link: https://lore.kernel.org/bpf/20210317145414.884817-1-namhyung@kernel.org
2021-03-17bpf, selftests: Fix up some test_verifier cases for unprivilegedPiotr Krysiuk4-10/+59
Fix up test_verifier error messages for the case where the original error message changed, or for the case where pointer alu errors differ between privileged and unprivileged tests. Also, add alternative tests for keeping coverage of the original verifier rejection error message (fp alu), and newly reject map_ptr += rX where rX == 0 given we now forbid alu on these types for unprivileged. All test_verifier cases pass after the change. The test case fixups were kept separate to ease backporting of core changes. Signed-off-by: Piotr Krysiuk <piotras@gmail.com> Co-developed-by: Daniel Borkmann <daniel@iogearbox.net> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: Alexei Starovoitov <ast@kernel.org>
2021-03-17selftests/net: fix warnings on reuseaddr_ports_exhaustedCarlos Llamas1-16/+16
Fix multiple warnings seen with gcc 10.2.1: reuseaddr_ports_exhausted.c:32:41: warning: missing braces around initializer [-Wmissing-braces] 32 | struct reuse_opts unreusable_opts[12] = { | ^ 33 | {0, 0, 0, 0}, | { } { } Fixes: 7f204a7de8b0 ("selftests: net: Add SO_REUSEADDR test to check if 4-tuples are fully utilized.") Signed-off-by: Carlos Llamas <cmllamas@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-03-16perf top: Fix BPF support related crash with perf_event_paranoid=3 + ↵Jackie Liu1-3/+10
kptr_restrict After installing the libelf-dev package and compiling perf, if we have kptr_restrict=2 and perf_event_paranoid=3 'perf top' will crash because the value of /proc/kallsyms cannot be obtained, which leads to info->jited_ksyms == NULL. In order to solve this problem, Add a check before use. Also plug some leaks on the error path. Suggested-by: Jiri Olsa <jolsa@redhat.com> Signed-off-by: Jackie Liu <liuyun01@kylinos.cn> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: jackie liu <liuyun01@kylinos.cn> Link: http://lore.kernel.org/lkml/20210316012453.1156-1-liuyun01@kylinos.cn Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2021-03-15selftests/bpf: Set gopt opt_class to 0 if get tunnel opt failedHangbin Liu1-4/+2
When fixing the bpf test_tunnel.sh geneve failure. I only fixed the IPv4 part but forgot the IPv6 issue. Similar with the IPv4 fixes 557c223b643a ("selftests/bpf: No need to drop the packet when there is no geneve opt"), when there is no tunnel option and bpf_skb_get_tunnel_opt() returns error, there is no need to drop the packets and break all geneve rx traffic. Just set opt_class to 0 and keep returning TC_ACT_OK at the end. Fixes: 557c223b643a ("selftests/bpf: No need to drop the packet when there is no geneve opt") Fixes: 933a741e3b82 ("selftests/bpf: bpf tunnel test.") Signed-off-by: Hangbin Liu <liuhangbin@gmail.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: William Tu <u9012063@gmail.com> Link: https://lore.kernel.org/bpf/20210309032214.2112438-1-liuhangbin@gmail.com
2021-03-15perf pmu: Validate raw event with sysfs exported format bitsJin Yao3-0/+39
A raw PMU event (eventsel+umask) in the form of rNNN is supported by perf but lacks of checking for the validity of raw encoding. For example, bit 16 and bit 17 are not valid on KBL but perf doesn't report warning when encoding with these bits. Before: # ./perf stat -e cpu/r031234/ -a -- sleep 1 Performance counter stats for 'system wide': 0 cpu/r031234/ 1.003798924 seconds time elapsed It may silently measure the wrong event! The kernel supported bits have been exported through /sys/devices/<pmu>/format/. Perf collects the information to 'struct perf_pmu_format' and links it to 'pmu->format' list. The 'struct perf_pmu_format' has a bitmap which records the valid bits for this format. For example, root@kbl-ppc:/sys/devices/cpu/format# cat umask config:8-15 The valid bits (bit8-bit15) are recorded in bitmap of format 'umask'. We collect total valid bits of all formats, save to a local variable 'masks' and reverse it. Now '~masks' represents total invalid bits. bits = config & ~masks; The set bits in 'bits' indicate the invalid bits used in config. Finally we use bitmap_scnprintf to report the invalid bits. Some architectures may not export supported bits through sysfs, so if masks is 0, perf_pmu__warn_invalid_config directly returns. After: Single event without name: # ./perf stat -e cpu/r031234/ -a -- sleep 1 WARNING: event 'N/A' not valid (bits 16-17 of config '31234' not supported by kernel)! Performance counter stats for 'system wide': 0 cpu/r031234/ 1.001597373 seconds time elapsed Multiple events with names: # ./perf stat -e cpu/rf01234,name=aaa/,cpu/r031234,name=bbb/ -a -- sleep 1 WARNING: event 'aaa' not valid (bits 20,22 of config 'f01234' not supported by kernel)! WARNING: event 'bbb' not valid (bits 16-17 of config '31234' not supported by kernel)! Performance counter stats for 'system wide': 0 aaa 0 bbb 1.001573787 seconds time elapsed Warnings are reported for invalid bits. Co-developed-by: Jiri Olsa <jolsa@redhat.com> Signed-off-by: Jin Yao <yao.jin@linux.intel.com> Reviewed-by: Jiri Olsa <jolsa@redhat.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Jin Yao <yao.jin@intel.com> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lore.kernel.org/lkml/20210310051138.12154-1-yao.jin@linux.intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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