bisecting fixing commit since 01fd1694b93c92ad54fa684dac9c8068ecda8288 building syzkaller on cd626f3ba9f85027426d4fbed73e79e523e8e138 testing commit 01fd1694b93c92ad54fa684dac9c8068ecda8288 with gcc (GCC) 8.1.0 kernel signature: 80458ee41aff957d065d560341ec75820c7d1873 all runs: crashed: WARNING in map_lookup_elem testing current HEAD fbc5fe7a54d02e11972e3b2a5ddb6ffc88162c8f testing commit fbc5fe7a54d02e11972e3b2a5ddb6ffc88162c8f with gcc (GCC) 8.1.0 kernel signature: ff5960f7b95b09d28f3e67951a3cd2a5a692609c all runs: OK # git bisect start fbc5fe7a54d02e11972e3b2a5ddb6ffc88162c8f 01fd1694b93c92ad54fa684dac9c8068ecda8288 Bisecting: 802 revisions left to test after this (roughly 10 steps) [119e9aef452a6b6976d20dac8f35aa2dc3e01348] s390/cmm: fix information leak in cmm_timeout_handler() testing commit 119e9aef452a6b6976d20dac8f35aa2dc3e01348 with gcc (GCC) 8.1.0 kernel signature: d24d7bf15127ab064a00fe5653ab1d01ea4f9b38 all runs: crashed: WARNING in map_lookup_elem # git bisect good 119e9aef452a6b6976d20dac8f35aa2dc3e01348 Bisecting: 401 revisions left to test after this (roughly 9 steps) [a9791599935f620b3767161b3400fb6515a600cf] crypto: arm/crc32 - avoid warning when compiling with Clang testing commit a9791599935f620b3767161b3400fb6515a600cf with gcc (GCC) 8.1.0 kernel signature: fbbddadd2c373ce3ea1781a3fff98e4b641f99ad all runs: OK # git bisect bad a9791599935f620b3767161b3400fb6515a600cf Bisecting: 200 revisions left to test after this (roughly 8 steps) [397944fc408dcd47ed5224d4cb1b0a7088299117] drm/i915: Add support for mandatory cmdparsing testing commit 397944fc408dcd47ed5224d4cb1b0a7088299117 with gcc (GCC) 8.1.0 kernel signature: dac351f819b5afcc1be298e81a62617ef6b98c49 all runs: crashed: WARNING in map_lookup_elem # git bisect good 397944fc408dcd47ed5224d4cb1b0a7088299117 Bisecting: 100 revisions left to test after this (roughly 7 steps) [46506366d8848b172f8c98dc826e50545e85ee1a] ARM: dts: meson8b: fix the clock controller register size testing commit 46506366d8848b172f8c98dc826e50545e85ee1a with gcc (GCC) 8.1.0 kernel signature: 4fe348162eb9f8ca4f4df1b638b016285c02751c all runs: OK # git bisect bad 46506366d8848b172f8c98dc826e50545e85ee1a Bisecting: 49 revisions left to test after this (roughly 6 steps) [f74f050cfc30876d1a70021a959d561863b2248f] Input: synaptics-rmi4 - fix video buffer size testing commit f74f050cfc30876d1a70021a959d561863b2248f with gcc (GCC) 8.1.0 kernel signature: 87642cf68949f0c0a03a57bdd1e79f031c81d036 all runs: OK # git bisect bad f74f050cfc30876d1a70021a959d561863b2248f Bisecting: 24 revisions left to test after this (roughly 5 steps) [82e77746f07db70367f66ef272256037d6415353] kvm: x86, powerpc: do not allow clearing largepages debugfs entry testing commit 82e77746f07db70367f66ef272256037d6415353 with gcc (GCC) 8.1.0 kernel signature: 9d4de3bee1b6f9599edfe24f8c8fae56c6b23289 all runs: crashed: WARNING in map_lookup_elem # git bisect good 82e77746f07db70367f66ef272256037d6415353 Bisecting: 12 revisions left to test after this (roughly 4 steps) [5afdcc2a0ae40bc6195476504f4e1932544cb441] kvm: mmu: Don't read PDPTEs when paging is not enabled testing commit 5afdcc2a0ae40bc6195476504f4e1932544cb441 with gcc (GCC) 8.1.0 kernel signature: 4eb8fd01402cb1923a60b1acf943bd494e502483 all runs: OK # git bisect bad 5afdcc2a0ae40bc6195476504f4e1932544cb441 Bisecting: 5 revisions left to test after this (roughly 3 steps) [95867919494dce594c3c57bbf31247157a881fb7] KVM: x86: add tracepoints around __direct_map and FNAME(fetch) testing commit 95867919494dce594c3c57bbf31247157a881fb7 with gcc (GCC) 8.1.0 kernel signature: eb9e753b7f18b697b4bcb9ddedea23513d82258b all runs: OK # git bisect bad 95867919494dce594c3c57bbf31247157a881fb7 Bisecting: 2 revisions left to test after this (roughly 2 steps) [3d16a8635826916820de036872c8e90322655ee3] KVM: x86: make FNAME(fetch) and __direct_map more similar testing commit 3d16a8635826916820de036872c8e90322655ee3 with gcc (GCC) 8.1.0 kernel signature: c7c958e77440c6facf0053a663a1c87588a70390 all runs: crashed: WARNING in map_lookup_elem # git bisect good 3d16a8635826916820de036872c8e90322655ee3 Bisecting: 0 revisions left to test after this (roughly 1 step) [6e8121097b41f6e4ff7df1b8359f3085630ba749] KVM: x86: change kvm_mmu_page_get_gfn BUG_ON to WARN_ON testing commit 6e8121097b41f6e4ff7df1b8359f3085630ba749 with gcc (GCC) 8.1.0 kernel signature: ac04c833c4bf0a651ffcbbe484f0993091bb6a02 all runs: crashed: WARNING in map_lookup_elem # git bisect good 6e8121097b41f6e4ff7df1b8359f3085630ba749 95867919494dce594c3c57bbf31247157a881fb7 is the first bad commit commit 95867919494dce594c3c57bbf31247157a881fb7 Author: Paolo Bonzini Date: Thu Jul 4 05:14:13 2019 -0400 KVM: x86: add tracepoints around __direct_map and FNAME(fetch) commit 335e192a3fa415e1202c8b9ecdaaecd643f823cc upstream. These are useful in debugging shadow paging. Signed-off-by: Paolo Bonzini Signed-off-by: Thomas Gleixner Signed-off-by: Greg Kroah-Hartman arch/x86/kvm/mmu.c | 14 +++++------ arch/x86/kvm/mmutrace.h | 59 ++++++++++++++++++++++++++++++++++++++++++++++ arch/x86/kvm/paging_tmpl.h | 2 ++ 3 files changed, 68 insertions(+), 7 deletions(-) kernel signature: eb9e753b7f18b697b4bcb9ddedea23513d82258b previous signature: ac04c833c4bf0a651ffcbbe484f0993091bb6a02 revisions tested: 12, total time: 3h1m52.230120931s (build: 1h32m47.146390058s, test: 1h25m5.30440681s) first good commit: 95867919494dce594c3c57bbf31247157a881fb7 KVM: x86: add tracepoints around __direct_map and FNAME(fetch) cc: ["gregkh@linuxfoundation.org" "hpa@zytor.com" "kvm@vger.kernel.org" "linux-kernel@vger.kernel.org" "mingo@redhat.com" "pbonzini@redhat.com" "rkrcmar@redhat.com" "tglx@linutronix.de" "x86@kernel.org"]