bisecting fixing commit since bf8f5de17442bba5f811e7e724980730e079ee11 building syzkaller on d5a5d045176c34bd1066e2b8ce843b3dc8a67ee0 testing commit bf8f5de17442bba5f811e7e724980730e079ee11 with gcc (GCC) 8.1.0 all runs: crashed: WARNING in event_function_local testing current HEAD 0eb0ce0a78e1f57082bca6cbdea6fd04feedb876 testing commit 0eb0ce0a78e1f57082bca6cbdea6fd04feedb876 with gcc (GCC) 8.1.0 all runs: OK # git bisect start 0eb0ce0a78e1f57082bca6cbdea6fd04feedb876 bf8f5de17442bba5f811e7e724980730e079ee11 Bisecting: 51234 revisions left to test after this (roughly 16 steps) [e0c38a4d1f196a4b17d2eba36afff8f656a4f1de] Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next testing commit e0c38a4d1f196a4b17d2eba36afff8f656a4f1de with gcc (GCC) 8.1.0 all runs: OK # git bisect bad e0c38a4d1f196a4b17d2eba36afff8f656a4f1de Bisecting: 25959 revisions left to test after this (roughly 15 steps) [d5acba26bfa097a618be425522b1ec4269d3edaf] Merge tag 'char-misc-4.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc testing commit d5acba26bfa097a618be425522b1ec4269d3edaf with gcc (GCC) 8.1.0 all runs: crashed: WARNING in event_function_local # git bisect good d5acba26bfa097a618be425522b1ec4269d3edaf Bisecting: 13090 revisions left to test after this (roughly 14 steps) [746bb4ed6d626f3f9e431a7f9b20504538e62ded] Merge tag 'vla-v4.20-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux testing commit 746bb4ed6d626f3f9e431a7f9b20504538e62ded with gcc (GCC) 8.1.0 all runs: OK # git bisect bad 746bb4ed6d626f3f9e431a7f9b20504538e62ded Bisecting: 6473 revisions left to test after this (roughly 13 steps) [0200fbdd431519d730b5d399a12840ec832b27cc] Merge branch 'locking-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip testing commit 0200fbdd431519d730b5d399a12840ec832b27cc with gcc (GCC) 8.1.0 all runs: crashed: WARNING in event_function_local # git bisect good 0200fbdd431519d730b5d399a12840ec832b27cc Bisecting: 3242 revisions left to test after this (roughly 12 steps) [3f2dcb6411eb3fd4a8be5d3713be0e2c1c750d6d] Merge tag 'backlight-next-4.20' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/backlight testing commit 3f2dcb6411eb3fd4a8be5d3713be0e2c1c750d6d with gcc (GCC) 8.1.0 run #0: crashed: WARNING in event_function_local run #1: crashed: WARNING in event_function_local run #2: crashed: WARNING in event_function_local run #3: crashed: WARNING in event_function_local run #4: crashed: WARNING in event_function_local run #5: crashed: WARNING in event_function_local run #6: crashed: WARNING in event_function_local run #7: crashed: WARNING in event_function_local run #8: crashed: WARNING in event_function_local run #9: OK # git bisect good 3f2dcb6411eb3fd4a8be5d3713be0e2c1c750d6d Bisecting: 1579 revisions left to test after this (roughly 11 steps) [da19a102ce87bf3e0a7fe277a659d1fc35330d6d] Merge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma testing commit da19a102ce87bf3e0a7fe277a659d1fc35330d6d with gcc (GCC) 8.1.0 all runs: OK # git bisect bad da19a102ce87bf3e0a7fe277a659d1fc35330d6d Bisecting: 750 revisions left to test after this (roughly 10 steps) [3acbd2de6bc3af215c6ed7732dfc097d1e238503] Merge tag 'sound-4.20-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound testing commit 3acbd2de6bc3af215c6ed7732dfc097d1e238503 with gcc (GCC) 8.1.0 all runs: crashed: WARNING in event_function_local # git bisect good 3acbd2de6bc3af215c6ed7732dfc097d1e238503 Bisecting: 285 revisions left to test after this (roughly 9 steps) [0d1e8b8d2bcd3150d51754d8d0fdbf44dc88b0d3] Merge tag 'kvm-4.20-1' of git://git.kernel.org/pub/scm/virt/kvm/kvm testing commit 0d1e8b8d2bcd3150d51754d8d0fdbf44dc88b0d3 with gcc (GCC) 8.1.0 all runs: OK # git bisect bad 0d1e8b8d2bcd3150d51754d8d0fdbf44dc88b0d3 Bisecting: 233 revisions left to test after this (roughly 8 steps) [62606c224d72a98c35d21a849f95cccf95b0a252] Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6 testing commit 62606c224d72a98c35d21a849f95cccf95b0a252 with gcc (GCC) 8.1.0 all runs: crashed: WARNING in event_function_local # git bisect good 62606c224d72a98c35d21a849f95cccf95b0a252 Bisecting: 116 revisions left to test after this (roughly 7 steps) [5b8ba41dafd789a64cdfb2b5ab6b0eb71f821cfc] KVM: nVMX: move vmcs12 EPTP consistency check to check_vmentry_prereqs() testing commit 5b8ba41dafd789a64cdfb2b5ab6b0eb71f821cfc with gcc (GCC) 8.1.0 all runs: OK # git bisect bad 5b8ba41dafd789a64cdfb2b5ab6b0eb71f821cfc Bisecting: 46 revisions left to test after this (roughly 6 steps) [9d67121a4fce20e0f7f127d40cd824fbbf5297dc] Merge remote-tracking branch 'remotes/powerpc/topic/ppc-kvm' into kvm-ppc-next testing commit 9d67121a4fce20e0f7f127d40cd824fbbf5297dc with gcc (GCC) 8.1.0 all runs: crashed: WARNING in event_function_local # git bisect good 9d67121a4fce20e0f7f127d40cd824fbbf5297dc Bisecting: 23 revisions left to test after this (roughly 5 steps) [0bec140fb6c106a70aac183e5fa99de0ef1d161a] kvm: selftests: add vcpu support for aarch64 testing commit 0bec140fb6c106a70aac183e5fa99de0ef1d161a with gcc (GCC) 8.1.0 all runs: crashed: WARNING in event_function_local # git bisect good 0bec140fb6c106a70aac183e5fa99de0ef1d161a Bisecting: 11 revisions left to test after this (roughly 4 steps) [4fef0f491347785dfd4cca206b80f75c4ec2dc9f] KVM: x86: move definition PT_MAX_HUGEPAGE_LEVEL and KVM_NR_PAGE_SIZES together testing commit 4fef0f491347785dfd4cca206b80f75c4ec2dc9f with gcc (GCC) 8.1.0 all runs: crashed: WARNING in event_function_local # git bisect good 4fef0f491347785dfd4cca206b80f75c4ec2dc9f Bisecting: 5 revisions left to test after this (roughly 3 steps) [0b0a31badb2d98967175c6812ac81db20f9a67fc] KVM: x86: hyperv: valid_bank_mask should be 'u64' testing commit 0b0a31badb2d98967175c6812ac81db20f9a67fc with gcc (GCC) 8.1.0 all runs: crashed: WARNING in event_function_local # git bisect good 0b0a31badb2d98967175c6812ac81db20f9a67fc Bisecting: 2 revisions left to test after this (roughly 2 steps) [3c6e099fa15fdb6fb1892199ed8709012e1294f2] KVM: nVMX: Always reflect #NM VM-exits to L1 testing commit 3c6e099fa15fdb6fb1892199ed8709012e1294f2 with gcc (GCC) 8.1.0 all runs: OK # git bisect bad 3c6e099fa15fdb6fb1892199ed8709012e1294f2 Bisecting: 0 revisions left to test after this (roughly 1 step) [214ff83d4473a7757fa18a64dc7efe3b0e158486] KVM: x86: hyperv: implement PV IPI send hypercalls testing commit 214ff83d4473a7757fa18a64dc7efe3b0e158486 with gcc (GCC) 8.1.0 all runs: OK # git bisect bad 214ff83d4473a7757fa18a64dc7efe3b0e158486 Bisecting: 0 revisions left to test after this (roughly 0 steps) [2cefc5feb80cf4237890a6a4582a0d20e50d9ced] KVM: x86: hyperv: optimize kvm_hv_flush_tlb() for vp_index == vcpu_idx case testing commit 2cefc5feb80cf4237890a6a4582a0d20e50d9ced with gcc (GCC) 8.1.0 all runs: crashed: WARNING in event_function_local # git bisect good 2cefc5feb80cf4237890a6a4582a0d20e50d9ced 214ff83d4473a7757fa18a64dc7efe3b0e158486 is the first bad commit commit 214ff83d4473a7757fa18a64dc7efe3b0e158486 Author: Vitaly Kuznetsov Date: Wed Sep 26 19:02:59 2018 +0200 KVM: x86: hyperv: implement PV IPI send hypercalls Using hypercall for sending IPIs is faster because this allows to specify any number of vCPUs (even > 64 with sparse CPU set), the whole procedure will take only one VMEXIT. Current Hyper-V TLFS (v5.0b) claims that HvCallSendSyntheticClusterIpi hypercall can't be 'fast' (passing parameters through registers) but apparently this is not true, Windows always uses it as 'fast' so we need to support that. Signed-off-by: Vitaly Kuznetsov Signed-off-by: Paolo Bonzini :040000 040000 296d534872e45f37dce824e63d4a815d5170d092 ea2c6aa9ed631faa3c17e90996ae5e227a973e25 M Documentation :040000 040000 5e63042f9716e05390e27081f602341b81a43d2a 81cb3399164f5553ca342da629d1441915ac9964 M arch :040000 040000 48f207372894889948f726a0a1fe39f96e307d97 596f846a42389724f5403f548c671ab48b317b61 M include revisions tested: 19, total time: 4h42m5.991018409s (build: 1h38m36.65526023s, test: 2h56m22.302282548s) first good commit: 214ff83d4473a7757fa18a64dc7efe3b0e158486 KVM: x86: hyperv: implement PV IPI send hypercalls cc: ["bp@alien8.de" "corbet@lwn.net" "dave.martin@arm.com" "david@gibson.dropbear.id.au" "drjones@redhat.com" "hpa@zytor.com" "jmattson@google.com" "kvm@vger.kernel.org" "linux-doc@vger.kernel.org" "linux-kernel@vger.kernel.org" "maz@kernel.org" "mingo@redhat.com" "paulus@ozlabs.org" "pbonzini@redhat.com" "rkrcmar@redhat.com" "sean.j.christopherson@intel.com" "tglx@linutronix.de" "vkuznets@redhat.com" "x86@kernel.org"]