bisecting fixing commit since baf76f0c58aec435a3a864075b8f6d8ee5d1f17e building syzkaller on b617407b25b37a7a8efa47127005d1f20dd0abe1 testing commit baf76f0c58aec435a3a864075b8f6d8ee5d1f17e with gcc (GCC) 8.1.0 run #0: crashed: no output from test machine run #1: OK run #2: OK run #3: OK run #4: OK run #5: OK run #6: OK run #7: OK run #8: OK run #9: OK testing current HEAD 4d856f72c10ecb060868ed10ff1b1453943fc6c8 testing commit 4d856f72c10ecb060868ed10ff1b1453943fc6c8 with gcc (GCC) 8.1.0 all runs: OK # git bisect start 4d856f72c10ecb060868ed10ff1b1453943fc6c8 baf76f0c58aec435a3a864075b8f6d8ee5d1f17e Bisecting: 15558 revisions left to test after this (roughly 14 steps) [6fc61d9f066f16d0fd40287db1afef3ff0c44702] staging: rtl8723bs: Remove rtw_btcoex_IQKNotify() testing commit 6fc61d9f066f16d0fd40287db1afef3ff0c44702 with gcc (GCC) 8.1.0 run #0: crashed: BUG: soft lockup in kvm_vcpu_release run #1: OK run #2: OK run #3: OK run #4: OK run #5: OK run #6: OK run #7: OK run #8: OK run #9: OK # git bisect good 6fc61d9f066f16d0fd40287db1afef3ff0c44702 Bisecting: 7762 revisions left to test after this (roughly 13 steps) [3f06962273e73c5f7a651726b191d531cadef788] Merge tag 'mtd/for-5.3' of git://git.kernel.org/pub/scm/linux/kernel/git/mtd/linux testing commit 3f06962273e73c5f7a651726b191d531cadef788 with gcc (GCC) 8.1.0 run #0: crashed: BUG: soft lockup in kvm_vm_release run #1: crashed: INFO: rcu detected stall in process_one_work run #2: OK run #3: OK run #4: OK run #5: OK run #6: OK run #7: OK run #8: OK run #9: OK # git bisect good 3f06962273e73c5f7a651726b191d531cadef788 Bisecting: 3906 revisions left to test after this (roughly 12 steps) [0570bc8b7c9b41deba6f61ac218922e7168ad648] Merge tag 'riscv/for-v5.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux testing commit 0570bc8b7c9b41deba6f61ac218922e7168ad648 with gcc (GCC) 8.1.0 run #0: OK run #1: crashed: no output from test machine run #2: OK run #3: OK run #4: OK run #5: OK run #6: OK run #7: OK run #8: OK run #9: OK # git bisect good 0570bc8b7c9b41deba6f61ac218922e7168ad648 Bisecting: 1954 revisions left to test after this (roughly 11 steps) [2f6f0a996218cdd9d275aac41828f54367e6fa28] Merge tag 'linux-kselftest-5.3-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest testing commit 2f6f0a996218cdd9d275aac41828f54367e6fa28 with gcc (GCC) 8.1.0 all runs: OK # git bisect bad 2f6f0a996218cdd9d275aac41828f54367e6fa28 Bisecting: 728 revisions left to test after this (roughly 10 steps) [af6af87d7e4ff67324425daa699b9cda32e3161d] Merge tag 'armsoc-dt' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc testing commit af6af87d7e4ff67324425daa699b9cda32e3161d with gcc (GCC) 8.1.0 run #0: crashed: BUG: soft lockup in kvm_vm_ioctl run #1: OK run #2: OK run #3: OK run #4: OK run #5: OK run #6: OK run #7: OK run #8: OK run #9: OK # git bisect good af6af87d7e4ff67324425daa699b9cda32e3161d Bisecting: 366 revisions left to test after this (roughly 9 steps) [289a2d22b5b611d85030795802a710e9f520df29] perf/x86/intel: Mark expected switch fall-throughs testing commit 289a2d22b5b611d85030795802a710e9f520df29 with gcc (GCC) 8.1.0 all runs: boot failed: WARNING: workqueue cpumask: online intersect > possible intersect # git bisect skip 289a2d22b5b611d85030795802a710e9f520df29 Bisecting: 366 revisions left to test after this (roughly 9 steps) [6108cd475ca8323fa9d9b584c44a5229a9a26aa5] Merge tag 'hwmon-for-v5.3-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging testing commit 6108cd475ca8323fa9d9b584c44a5229a9a26aa5 with gcc (GCC) 8.1.0 run #0: crashed: INFO: rcu detected stall in kvm_vm_ioctl run #1: OK run #2: OK run #3: OK run #4: OK run #5: OK run #6: OK run #7: OK run #8: OK run #9: OK # git bisect good 6108cd475ca8323fa9d9b584c44a5229a9a26aa5 Bisecting: 171 revisions left to test after this (roughly 7 steps) [523634db145a22cd5562714d4c59ea74686afe38] Merge tag 'libnvdimm-fixes-5.3-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm testing commit 523634db145a22cd5562714d4c59ea74686afe38 with gcc (GCC) 8.1.0 run #0: crashed: BUG: soft lockup in kvm_vm_release run #1: OK run #2: OK run #3: OK run #4: OK run #5: OK run #6: OK run #7: OK run #8: OK run #9: OK # git bisect good 523634db145a22cd5562714d4c59ea74686afe38 Bisecting: 88 revisions left to test after this (roughly 7 steps) [a9815a4fa2fd297cab9fa7a12161b16657290293] Merge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip testing commit a9815a4fa2fd297cab9fa7a12161b16657290293 with gcc (GCC) 8.1.0 all runs: OK # git bisect bad a9815a4fa2fd297cab9fa7a12161b16657290293 Bisecting: 41 revisions left to test after this (roughly 5 steps) [88c5083442454e5e8a505b11fa16f32d2879651e] Merge tag 'Wimplicit-fallthrough-5.3-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/gustavoars/linux testing commit 88c5083442454e5e8a505b11fa16f32d2879651e with gcc (GCC) 8.1.0 all runs: OK # git bisect bad 88c5083442454e5e8a505b11fa16f32d2879651e Bisecting: 20 revisions left to test after this (roughly 4 steps) [98abe0227827f45cddb21875b2ffa9aeca3848b3] MAINTAINERS: vfio-ccw: Remove myself as the maintainer testing commit 98abe0227827f45cddb21875b2ffa9aeca3848b3 with gcc (GCC) 8.1.0 all runs: boot failed: WARNING: workqueue cpumask: online intersect > possible intersect # git bisect skip 98abe0227827f45cddb21875b2ffa9aeca3848b3 Bisecting: 20 revisions left to test after this (roughly 4 steps) [5efbd93708df56e0fb92b4398960a5bb1ab62f02] Merge tag 'devicetree-fixes-for-5.3-2' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux testing commit 5efbd93708df56e0fb92b4398960a5bb1ab62f02 with gcc (GCC) 8.1.0 run #0: crashed: BUG: soft lockup in kvm_vcpu_release run #1: OK run #2: OK run #3: OK run #4: OK run #5: OK run #6: OK run #7: OK run #8: OK run #9: OK # git bisect good 5efbd93708df56e0fb92b4398960a5bb1ab62f02 Bisecting: 16 revisions left to test after this (roughly 4 steps) [1a2dcff881059dedc14fafc8a442664c8dbd60f1] s390/dma: provide proper ARCH_ZONE_DMA_BITS value testing commit 1a2dcff881059dedc14fafc8a442664c8dbd60f1 with gcc (GCC) 8.1.0 all runs: boot failed: WARNING: workqueue cpumask: online intersect > possible intersect # git bisect skip 1a2dcff881059dedc14fafc8a442664c8dbd60f1 Bisecting: 16 revisions left to test after this (roughly 4 steps) [2defb94edb44784b0b5064633e05c97fdb1b0e0f] drm/i915: Mark expected switch fall-throughs testing commit 2defb94edb44784b0b5064633e05c97fdb1b0e0f with gcc (GCC) 8.1.0 all runs: boot failed: WARNING: workqueue cpumask: online intersect > possible intersect # git bisect skip 2defb94edb44784b0b5064633e05c97fdb1b0e0f Bisecting: 16 revisions left to test after this (roughly 4 steps) [a6ec414a4dd529eeac5c3ea51c661daba3397108] s390/qdio: add sanity checks to the fast-requeue path testing commit a6ec414a4dd529eeac5c3ea51c661daba3397108 with gcc (GCC) 8.1.0 all runs: boot failed: WARNING: workqueue cpumask: online intersect > possible intersect # git bisect skip a6ec414a4dd529eeac5c3ea51c661daba3397108 Bisecting: 16 revisions left to test after this (roughly 4 steps) [061c996239490a402aa31cd116f71a8bf9db1d8c] s390: use __u{16,32,64} instead of uint{16,32,64}_t in uapi header testing commit 061c996239490a402aa31cd116f71a8bf9db1d8c with gcc (GCC) 8.1.0 all runs: boot failed: WARNING: workqueue cpumask: online intersect > possible intersect # git bisect skip 061c996239490a402aa31cd116f71a8bf9db1d8c Bisecting: 16 revisions left to test after this (roughly 4 steps) [8b515be512a2435bb8aedc6390cbe140167f9eb9] vfio-ccw: Fix memory leak and don't call cp_free in cp_init testing commit 8b515be512a2435bb8aedc6390cbe140167f9eb9 with gcc (GCC) 8.1.0 all runs: OK # git bisect bad 8b515be512a2435bb8aedc6390cbe140167f9eb9 Bisecting: 0 revisions left to test after this (roughly 0 steps) [c9f597a4d6d7a01590571291f659a2f146111e34] vfio-ccw: Fix misleading comment when setting orb.cmd.c64 testing commit c9f597a4d6d7a01590571291f659a2f146111e34 with gcc (GCC) 8.1.0 run #0: crashed: BUG: soft lockup in kvm_vm_release run #1: crashed: BUG: soft lockup in kvm_vm_ioctl run #2: crashed: INFO: rcu detected stall in __do_softirq run #3: OK run #4: OK run #5: OK run #6: OK run #7: OK run #8: OK run #9: OK # git bisect good c9f597a4d6d7a01590571291f659a2f146111e34 8b515be512a2435bb8aedc6390cbe140167f9eb9 is the first bad commit commit 8b515be512a2435bb8aedc6390cbe140167f9eb9 Author: Farhan Ali Date: Thu Jul 11 10:28:52 2019 -0400 vfio-ccw: Fix memory leak and don't call cp_free in cp_init We don't set cp->initialized to true so calling cp_free will just return and not do anything. Also fix a memory leak where we fail to free a ccwchain on an error. Fixes: 812271b910 ("s390/cio: Squash cp_free() and cp_unpin_free()") Signed-off-by: Farhan Ali Message-Id: <3173c4216f4555d9765eb6e4922534982bc820e4.1562854091.git.alifm@linux.ibm.com> Reviewed-by: Cornelia Huck Reviewed-by: Eric Farman Signed-off-by: Cornelia Huck :040000 040000 a25a05cec681bdd96301576d843ac45ae869e260 62203e02edc5d15929d36b336b1c1e2db70275c3 M drivers revisions tested: 20, total time: 5h46m7.298122571s (build: 1h55m22.492386675s, test: 3h44m36.234920838s) first good commit: 8b515be512a2435bb8aedc6390cbe140167f9eb9 vfio-ccw: Fix memory leak and don't call cp_free in cp_init cc: ["alifm@linux.ibm.com" "borntraeger@de.ibm.com" "cohuck@redhat.com" "farman@linux.ibm.com" "gor@linux.ibm.com" "heiko.carstens@de.ibm.com" "kvm@vger.kernel.org" "linux-kernel@vger.kernel.org" "linux-s390@vger.kernel.org" "oberpar@linux.ibm.com" "pasic@linux.ibm.com" "sebott@linux.ibm.com"]