bisecting cause commit starting from 0011572c883082a95e02d47f45fc4a42dc0e8634 building syzkaller on 442206d76b974cca2d83ec763d4cf5ee829eb7d6 testing commit 0011572c883082a95e02d47f45fc4a42dc0e8634 with gcc (GCC) 8.1.0 all runs: crashed: memory leak in bio_copy_user_iov testing release v5.1 testing commit e93c9c99a629c61837d5a7fc2120cd2b6c70dbdd with gcc (GCC) 8.1.0 all runs: crashed: memory leak in bio_copy_user_iov testing release v5.0 testing commit 1c163f4c7b3f621efff9b28a47abb36f7378d783 with gcc (GCC) 8.1.0 all runs: crashed: memory leak in bio_copy_user_iov testing release v4.20 testing commit 8fe28cb58bcb235034b64cbbb7550a8a43fd88be with gcc (GCC) 8.1.0 all runs: crashed: memory leak in bio_copy_user_iov testing release v4.19 testing commit 84df9525b0c27f3ebc2ebb1864fa62a97fdedb7d with gcc (GCC) 8.1.0 all runs: crashed: memory leak in bio_copy_user_iov testing release v4.18 testing commit 94710cac0ef4ee177a63b5227664b38c95bbf703 with gcc (GCC) 8.1.0 all runs: crashed: memory leak in corrupted testing release v4.17 testing commit 29dcea88779c856c7dc92040a0c01233263101d4 with gcc (GCC) 8.1.0 all runs: crashed: memory leak in corrupted testing release v4.16 testing commit 0adb32858b0bddf4ada5f364a84ed60b196dbcda with gcc (GCC) 8.1.0 all runs: crashed: memory leak in bio_copy_user_iov testing release v4.15 testing commit d8a5b80568a9cb66810e75b182018e9edb68e8ff with gcc (GCC) 8.1.0 all runs: crashed: memory leak in bio_copy_user_iov testing release v4.14 testing commit bebc6082da0a9f5d47a1ea2edc099bf671058bd4 with gcc (GCC) 8.1.0 all runs: crashed: memory leak in bio_copy_user_iov testing release v4.13 testing commit 569dbb88e80deb68974ef6fdd6a13edb9d686261 with gcc (GCC) 8.1.0 run #0: basic kernel testing failed: WARNING: kernel stack regs has bad 'bp' value run #1: basic kernel testing failed: WARNING: kernel stack regs has bad 'bp' value run #2: crashed: WARNING: kernel stack regs has bad 'bp' value run #3: crashed: memory leak in bio_copy_user_iov run #4: crashed: memory leak in bio_copy_user_iov run #5: basic kernel testing failed: WARNING: kernel stack regs has bad 'bp' value run #6: crashed: WARNING: kernel stack regs has bad 'bp' value run #7: basic kernel testing failed: WARNING: kernel stack regs has bad 'bp' value run #8: crashed: memory leak in bio_copy_user_iov run #9: crashed: memory leak in bio_copy_user_iov testing release v4.12 testing commit 6f7da290413ba713f0cdd9ff1a2a9bb129ef4f6c with gcc (GCC) 8.1.0 run #0: basic kernel testing failed: WARNING: kernel stack regs has bad 'bp' value run #1: basic kernel testing failed: WARNING: kernel stack regs has bad 'bp' value run #2: basic kernel testing failed: WARNING: kernel stack regs has bad 'bp' value run #3: basic kernel testing failed: WARNING: kernel stack regs has bad 'bp' value run #4: basic kernel testing failed: WARNING: kernel stack regs has bad 'bp' value run #5: crashed: WARNING: kernel stack regs has bad 'bp' value run #6: crashed: memory leak in bio_copy_user_iov run #7: basic kernel testing failed: WARNING: kernel stack regs has bad 'bp' value run #8: crashed: WARNING: kernel stack regs has bad 'bp' value run #9: crashed: memory leak in bio_copy_user_iov testing release v4.11 testing commit a351e9b9fc24e982ec2f0e76379a49826036da12 with gcc (GCC) 7.3.0 run #0: crashed: memory leak in bio_copy_user_iov run #1: crashed: memory leak in copy_process run #2: crashed: memory leak in bio_copy_user_iov run #3: crashed: memory leak in bio_copy_user_iov run #4: crashed: memory leak in copy_process run #5: crashed: memory leak in bio_copy_user_iov run #6: crashed: memory leak in copy_process run #7: crashed: memory leak in bio_copy_user_iov run #8: crashed: memory leak in bio_copy_user_iov run #9: crashed: memory leak in bio_copy_user_iov testing release v4.10 testing commit c470abd4fde40ea6a0846a2beab642a578c0b8cd with gcc (GCC) 5.5.0 all runs: crashed: memory leak in bio_copy_user_iov testing release v4.9 testing commit 69973b830859bc6529a7a0468ba0d80ee5117826 with gcc (GCC) 5.5.0 run #0: crashed: memory leak in bio_copy_user_iov run #1: crashed: memory leak in bio_copy_user_iov run #2: crashed: memory leak in bio_copy_user_iov run #3: crashed: memory leak in bio_copy_user_iov run #4: crashed: memory leak in copy_process run #5: crashed: memory leak in bio_copy_user_iov run #6: crashed: memory leak in bio_copy_user_iov run #7: crashed: memory leak in copy_process run #8: crashed: memory leak in bio_copy_user_iov run #9: crashed: memory leak in copy_process testing release v4.8 testing commit c8d2bc9bc39ebea8437fd974fdbc21847bb897a3 with gcc (GCC) 5.5.0 all runs: crashed: memory leak in bio_copy_user_iov testing release v4.7 testing commit 523d939ef98fd712632d93a5a2b588e477a7565e with gcc (GCC) 5.5.0 all runs: crashed: memory leak in bio_copy_user_iov testing release v4.6 testing commit 2dcd0af568b0cf583645c8a317dd12e344b1c72a with gcc (GCC) 5.5.0 all runs: crashed: memory leak in bio_copy_user_iov testing release v4.5 testing commit b562e44f507e863c6792946e4e1b1449fbbac85d with gcc (GCC) 5.5.0 all runs: OK # git bisect start v4.6 v4.5 Bisecting: 8131 revisions left to test after this (roughly 13 steps) [6b5f04b6cf8ebab9a65d9c0026c650bb2538fd0f] Merge branch 'for-4.6' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup testing commit 6b5f04b6cf8ebab9a65d9c0026c650bb2538fd0f with gcc (GCC) 5.5.0 all runs: crashed: memory leak in bio_copy_user_iov # git bisect bad 6b5f04b6cf8ebab9a65d9c0026c650bb2538fd0f Bisecting: 3159 revisions left to test after this (roughly 12 steps) [96b9b1c95660d4bc5510c5d798d3817ae9f0b391] Merge tag 'tty-4.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty testing commit 96b9b1c95660d4bc5510c5d798d3817ae9f0b391 with gcc (GCC) 5.5.0 all runs: crashed: memory leak in bio_copy_user_iov # git bisect bad 96b9b1c95660d4bc5510c5d798d3817ae9f0b391 Bisecting: 1605 revisions left to test after this (roughly 11 steps) [277edbabf6fece057b14fb6db5e3a34e00f42f42] Merge tag 'pm+acpi-4.6-rc1-1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm testing commit 277edbabf6fece057b14fb6db5e3a34e00f42f42 with gcc (GCC) 5.5.0 all runs: OK # git bisect good 277edbabf6fece057b14fb6db5e3a34e00f42f42 Bisecting: 812 revisions left to test after this (roughly 10 steps) [bace3db5da970c4d4f80a1ffa988ec66c7f6a8f5] Merge tag 'media/v4.6-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media testing commit bace3db5da970c4d4f80a1ffa988ec66c7f6a8f5 with gcc (GCC) 5.5.0 all runs: crashed: memory leak in bio_copy_user_iov # git bisect bad bace3db5da970c4d4f80a1ffa988ec66c7f6a8f5 Bisecting: 386 revisions left to test after this (roughly 9 steps) [8759957b77ac1b5b5bdfac5ba049789107e85190] Merge tag 'libnvdimm-for-4.6' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm testing commit 8759957b77ac1b5b5bdfac5ba049789107e85190 with gcc (GCC) 5.5.0 all runs: crashed: memory leak in bio_copy_user_iov # git bisect bad 8759957b77ac1b5b5bdfac5ba049789107e85190 Bisecting: 202 revisions left to test after this (roughly 8 steps) [dc183965282d28c82f192e39cbfa91da85505a6f] ncr5380: Forget aborted commands testing commit dc183965282d28c82f192e39cbfa91da85505a6f with gcc (GCC) 5.5.0 all runs: OK # git bisect good dc183965282d28c82f192e39cbfa91da85505a6f Bisecting: 101 revisions left to test after this (roughly 7 steps) [6e6f498b039aa5558c7377fbbe65f7421d34cea4] Merge branch 'pci/resource' into next testing commit 6e6f498b039aa5558c7377fbbe65f7421d34cea4 with gcc (GCC) 5.5.0 all runs: OK # git bisect good 6e6f498b039aa5558c7377fbbe65f7421d34cea4 Bisecting: 60 revisions left to test after this (roughly 6 steps) [98dbc9c6c61698792e3a66f32f3bf066201d42d7] dm: fix rq_end_stats() NULL pointer in dm_requeue_original_request() testing commit 98dbc9c6c61698792e3a66f32f3bf066201d42d7 with gcc (GCC) 5.5.0 run #0: basic kernel testing failed: timed out run #1: basic kernel testing failed: failed to copy test binary to VM: failed to run ["scp" "-P" "22" "-F" "/dev/null" "-o" "UserKnownHostsFile=/dev/null" "-o" "BatchMode=yes" "-o" "IdentitiesOnly=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "-i" "/syzkaller/jobs/linux/workdir/image/key" "/tmp/syz-executor259772714" "root@10.128.0.37:./syz-executor259772714"]: exit status 1 ssh: connect to host 10.128.0.37 port 22: Connection timed out lost connection run #2: basic kernel testing failed: failed to copy test binary to VM: failed to run ["scp" "-P" "22" "-F" "/dev/null" "-o" "UserKnownHostsFile=/dev/null" "-o" "BatchMode=yes" "-o" "IdentitiesOnly=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "-i" "/syzkaller/jobs/linux/workdir/image/key" "/tmp/syz-executor732184193" "root@10.128.0.93:./syz-executor732184193"]: exit status 1 ssh: connect to host 10.128.0.93 port 22: Connection timed out lost connection run #3: basic kernel testing failed: failed to copy test binary to VM: failed to run ["scp" "-P" "22" "-F" "/dev/null" "-o" "UserKnownHostsFile=/dev/null" "-o" "BatchMode=yes" "-o" "IdentitiesOnly=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "-i" "/syzkaller/jobs/linux/workdir/image/key" "/tmp/syz-executor656845804" "root@10.128.0.223:./syz-executor656845804"]: exit status 1 ssh: connect to host 10.128.0.223 port 22: Connection timed out lost connection run #4: basic kernel testing failed: failed to copy test binary to VM: failed to run ["scp" "-P" "22" "-F" "/dev/null" "-o" "UserKnownHostsFile=/dev/null" "-o" "BatchMode=yes" "-o" "IdentitiesOnly=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "-i" "/syzkaller/jobs/linux/workdir/image/key" "/tmp/syz-executor019537499" "root@10.128.0.119:./syz-executor019537499"]: exit status 1 ssh: connect to host 10.128.0.119 port 22: Connection timed out lost connection run #5: crashed: INFO: rcu detected stall in cleanup_net run #6: crashed: INFO: rcu detected stall in corrupted run #7: crashed: INFO: rcu detected stall in cleanup_net run #8: crashed: INFO: rcu detected stall in cleanup_net run #9: crashed: INFO: rcu detected stall in corrupted # git bisect bad 98dbc9c6c61698792e3a66f32f3bf066201d42d7 Bisecting: 20 revisions left to test after this (roughly 4 steps) [21136f89d76dc10d31d294f2bb79c585a039bad6] dm mpath: remove repeat_count support from multipath core testing commit 21136f89d76dc10d31d294f2bb79c585a039bad6 with gcc (GCC) 5.5.0 run #0: basic kernel testing failed: failed to copy test binary to VM: failed to run ["scp" "-P" "22" "-F" "/dev/null" "-o" "UserKnownHostsFile=/dev/null" "-o" "BatchMode=yes" "-o" "IdentitiesOnly=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "-i" "/syzkaller/jobs/linux/workdir/image/key" "/tmp/syz-executor101671237" "root@10.128.0.62:./syz-executor101671237"]: exit status 1 ssh: connect to host 10.128.0.62 port 22: Connection timed out lost connection run #1: basic kernel testing failed: failed to copy test binary to VM: failed to run ["scp" "-P" "22" "-F" "/dev/null" "-o" "UserKnownHostsFile=/dev/null" "-o" "BatchMode=yes" "-o" "IdentitiesOnly=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "-i" "/syzkaller/jobs/linux/workdir/image/key" "/tmp/syz-executor107341280" "root@10.128.10.8:./syz-executor107341280"]: exit status 1 ssh: connect to host 10.128.10.8 port 22: Connection timed out lost connection run #2: basic kernel testing failed: failed to copy test binary to VM: failed to run ["scp" "-P" "22" "-F" "/dev/null" "-o" "UserKnownHostsFile=/dev/null" "-o" "BatchMode=yes" "-o" "IdentitiesOnly=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "-i" "/syzkaller/jobs/linux/workdir/image/key" "/tmp/syz-executor618482623" "root@10.128.10.43:./syz-executor618482623"]: exit status 1 ssh: connect to host 10.128.10.43 port 22: Connection timed out lost connection run #3: basic kernel testing failed: failed to copy test binary to VM: failed to run ["scp" "-P" "22" "-F" "/dev/null" "-o" "UserKnownHostsFile=/dev/null" "-o" "BatchMode=yes" "-o" "IdentitiesOnly=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "-i" "/syzkaller/jobs/linux/workdir/image/key" "/tmp/syz-executor284939794" "root@10.128.10.13:./syz-executor284939794"]: exit status 1 ssh: connect to host 10.128.10.13 port 22: Connection timed out lost connection run #4: crashed: INFO: rcu detected stall in cleanup_net run #5: crashed: INFO: rcu detected stall in corrupted run #6: crashed: INFO: rcu detected stall in corrupted run #7: crashed: INFO: rcu detected stall in corrupted run #8: crashed: INFO: rcu detected stall in cleanup_net run #9: crashed: INFO: rcu detected stall in corrupted # git bisect bad 21136f89d76dc10d31d294f2bb79c585a039bad6 Bisecting: 9 revisions left to test after this (roughly 3 steps) [1c357a1e86a4227a6b6059f2de118ae47659cebc] dm: allocate blk_mq_tag_set rather than embed in mapped_device testing commit 1c357a1e86a4227a6b6059f2de118ae47659cebc with gcc (GCC) 5.5.0 run #0: basic kernel testing failed: failed to copy test binary to VM: failed to run ["scp" "-P" "22" "-F" "/dev/null" "-o" "UserKnownHostsFile=/dev/null" "-o" "BatchMode=yes" "-o" "IdentitiesOnly=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "-i" "/syzkaller/jobs/linux/workdir/image/key" "/tmp/syz-executor288180500" "root@10.128.0.63:./syz-executor288180500"]: exit status 1 ssh: connect to host 10.128.0.63 port 22: Connection timed out lost connection run #1: basic kernel testing failed: failed to copy test binary to VM: failed to run ["scp" "-P" "22" "-F" "/dev/null" "-o" "UserKnownHostsFile=/dev/null" "-o" "BatchMode=yes" "-o" "IdentitiesOnly=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "-i" "/syzkaller/jobs/linux/workdir/image/key" "/tmp/syz-executor446747491" "root@10.128.0.217:./syz-executor446747491"]: exit status 1 ssh: connect to host 10.128.0.217 port 22: Connection timed out lost connection run #2: basic kernel testing failed: failed to copy test binary to VM: failed to run ["scp" "-P" "22" "-F" "/dev/null" "-o" "UserKnownHostsFile=/dev/null" "-o" "BatchMode=yes" "-o" "IdentitiesOnly=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "-i" "/syzkaller/jobs/linux/workdir/image/key" "/tmp/syz-executor707700070" "root@10.128.0.210:./syz-executor707700070"]: exit status 1 ssh: connect to host 10.128.0.210 port 22: Connection timed out lost connection run #3: basic kernel testing failed: failed to copy test binary to VM: failed to run ["scp" "-P" "22" "-F" "/dev/null" "-o" "UserKnownHostsFile=/dev/null" "-o" "BatchMode=yes" "-o" "IdentitiesOnly=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "-i" "/syzkaller/jobs/linux/workdir/image/key" "/tmp/syz-executor497679757" "root@10.128.0.226:./syz-executor497679757"]: exit status 1 ssh: connect to host 10.128.0.226 port 22: Connection timed out lost connection run #4: basic kernel testing failed: failed to copy test binary to VM: failed to run ["scp" "-P" "22" "-F" "/dev/null" "-o" "UserKnownHostsFile=/dev/null" "-o" "BatchMode=yes" "-o" "IdentitiesOnly=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "-i" "/syzkaller/jobs/linux/workdir/image/key" "/tmp/syz-executor004274056" "root@10.128.0.253:./syz-executor004274056"]: exit status 1 ssh: connect to host 10.128.0.253 port 22: Connection timed out lost connection run #5: crashed: INFO: rcu detected stall in corrupted run #6: crashed: INFO: rcu detected stall in corrupted run #7: crashed: INFO: rcu detected stall in corrupted run #8: crashed: INFO: rcu detected stall in cleanup_net run #9: crashed: INFO: rcu detected stall in cleanup_net # git bisect bad 1c357a1e86a4227a6b6059f2de118ae47659cebc Bisecting: 4 revisions left to test after this (roughly 2 steps) [e522c039059b0fdf5ecd15d7007026326fffc9be] dm: cleanup dm_any_congested() testing commit e522c039059b0fdf5ecd15d7007026326fffc9be with gcc (GCC) 5.5.0 run #0: basic kernel testing failed: failed to copy test binary to VM: failed to run ["scp" "-P" "22" "-F" "/dev/null" "-o" "UserKnownHostsFile=/dev/null" "-o" "BatchMode=yes" "-o" "IdentitiesOnly=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "-i" "/syzkaller/jobs/linux/workdir/image/key" "/tmp/syz-executor775897594" "root@10.128.15.196:./syz-executor775897594"]: exit status 1 ssh: connect to host 10.128.15.196 port 22: Connection timed out lost connection run #1: basic kernel testing failed: failed to copy test binary to VM: failed to run ["scp" "-P" "22" "-F" "/dev/null" "-o" "UserKnownHostsFile=/dev/null" "-o" "BatchMode=yes" "-o" "IdentitiesOnly=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "-i" "/syzkaller/jobs/linux/workdir/image/key" "/tmp/syz-executor830183185" "root@10.128.15.205:./syz-executor830183185"]: exit status 1 ssh: connect to host 10.128.15.205 port 22: Connection timed out lost connection run #2: basic kernel testing failed: failed to copy test binary to VM: failed to run ["scp" "-P" "22" "-F" "/dev/null" "-o" "UserKnownHostsFile=/dev/null" "-o" "BatchMode=yes" "-o" "IdentitiesOnly=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "-i" "/syzkaller/jobs/linux/workdir/image/key" "/tmp/syz-executor571102524" "root@10.128.15.194:./syz-executor571102524"]: exit status 1 ssh: connect to host 10.128.15.194 port 22: Connection timed out lost connection run #3: basic kernel testing failed: failed to copy test binary to VM: failed to run ["scp" "-P" "22" "-F" "/dev/null" "-o" "UserKnownHostsFile=/dev/null" "-o" "BatchMode=yes" "-o" "IdentitiesOnly=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "-i" "/syzkaller/jobs/linux/workdir/image/key" "/tmp/syz-executor115140971" "root@10.128.0.156:./syz-executor115140971"]: exit status 1 ssh: connect to host 10.128.0.156 port 22: Connection timed out lost connection run #4: crashed: INFO: rcu detected stall in cleanup_net run #5: crashed: INFO: rcu detected stall in cleanup_net run #6: crashed: INFO: rcu detected stall in corrupted run #7: crashed: INFO: rcu detected stall in corrupted run #8: crashed: INFO: rcu detected stall in corrupted run #9: crashed: INFO: rcu detected stall in cleanup_net # git bisect bad e522c039059b0fdf5ecd15d7007026326fffc9be Bisecting: 2 revisions left to test after this (roughly 1 step) [956a4025808df4abfe2fe25a11feb4c8f33fc336] dm: fix sparse "unexpected unlock" warnings in ioctl code testing commit 956a4025808df4abfe2fe25a11feb4c8f33fc336 with gcc (GCC) 5.5.0 run #0: basic kernel testing failed: failed to copy test binary to VM: failed to run ["scp" "-P" "22" "-F" "/dev/null" "-o" "UserKnownHostsFile=/dev/null" "-o" "BatchMode=yes" "-o" "IdentitiesOnly=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "-i" "/syzkaller/jobs/linux/workdir/image/key" "/tmp/syz-executor154668757" "root@10.128.15.196:./syz-executor154668757"]: exit status 1 ssh: connect to host 10.128.15.196 port 22: Connection timed out lost connection run #1: basic kernel testing failed: failed to copy test binary to VM: failed to run ["scp" "-P" "22" "-F" "/dev/null" "-o" "UserKnownHostsFile=/dev/null" "-o" "BatchMode=yes" "-o" "IdentitiesOnly=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "-i" "/syzkaller/jobs/linux/workdir/image/key" "/tmp/syz-executor096992816" "root@10.128.1.60:./syz-executor096992816"]: exit status 1 ssh: connect to host 10.128.1.60 port 22: Connection timed out lost connection run #2: basic kernel testing failed: failed to copy test binary to VM: failed to run ["scp" "-P" "22" "-F" "/dev/null" "-o" "UserKnownHostsFile=/dev/null" "-o" "BatchMode=yes" "-o" "IdentitiesOnly=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "-i" "/syzkaller/jobs/linux/workdir/image/key" "/tmp/syz-executor829301199" "root@10.128.15.221:./syz-executor829301199"]: exit status 1 ssh: connect to host 10.128.15.221 port 22: Connection timed out lost connection run #3: basic kernel testing failed: failed to copy test binary to VM: failed to run ["scp" "-P" "22" "-F" "/dev/null" "-o" "UserKnownHostsFile=/dev/null" "-o" "BatchMode=yes" "-o" "IdentitiesOnly=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "-i" "/syzkaller/jobs/linux/workdir/image/key" "/tmp/syz-executor901704418" "root@10.128.0.154:./syz-executor901704418"]: exit status 1 ssh: connect to host 10.128.0.154 port 22: Connection timed out lost connection run #4: basic kernel testing failed: failed to copy test binary to VM: failed to run ["scp" "-P" "22" "-F" "/dev/null" "-o" "UserKnownHostsFile=/dev/null" "-o" "BatchMode=yes" "-o" "IdentitiesOnly=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "-i" "/syzkaller/jobs/linux/workdir/image/key" "/tmp/syz-executor173917401" "root@10.128.0.149:./syz-executor173917401"]: exit status 1 ssh: connect to host 10.128.0.149 port 22: Connection timed out lost connection run #5: basic kernel testing failed: failed to copy test binary to VM: failed to run ["scp" "-P" "22" "-F" "/dev/null" "-o" "UserKnownHostsFile=/dev/null" "-o" "BatchMode=yes" "-o" "IdentitiesOnly=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "-i" "/syzkaller/jobs/linux/workdir/image/key" "/tmp/syz-executor238186596" "root@10.128.15.219:./syz-executor238186596"]: exit status 1 ssh: connect to host 10.128.15.219 port 22: Connection timed out lost connection run #6: basic kernel testing failed: failed to copy test binary to VM: failed to run ["scp" "-P" "22" "-F" "/dev/null" "-o" "UserKnownHostsFile=/dev/null" "-o" "BatchMode=yes" "-o" "IdentitiesOnly=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "-i" "/syzkaller/jobs/linux/workdir/image/key" "/tmp/syz-executor126517363" "root@10.128.1.28:./syz-executor126517363"]: exit status 1 ssh: connect to host 10.128.1.28 port 22: Connection timed out lost connection run #7: basic kernel testing failed: failed to copy test binary to VM: timedout ["scp" "-P" "22" "-F" "/dev/null" "-o" "UserKnownHostsFile=/dev/null" "-o" "BatchMode=yes" "-o" "IdentitiesOnly=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "-i" "/syzkaller/jobs/linux/workdir/image/key" "/syzkaller/jobs/linux/workdir/repro.prog" "root@10.128.15.220:./repro.prog"] Warning: Permanently added '10.128.15.220' (ECDSA) to the list of known hosts. run #8: crashed: INFO: rcu detected stall in cleanup_net run #9: crashed: INFO: rcu detected stall in corrupted # git bisect bad 956a4025808df4abfe2fe25a11feb4c8f33fc336 Bisecting: 0 revisions left to test after this (roughly 0 steps) [664820265d70a759dceca87b6eb200cd2b93cda8] dm: do not return target from dm_get_live_table_for_ioctl() testing commit 664820265d70a759dceca87b6eb200cd2b93cda8 with gcc (GCC) 5.5.0 run #0: basic kernel testing failed: failed to copy test binary to VM: failed to run ["scp" "-P" "22" "-F" "/dev/null" "-o" "UserKnownHostsFile=/dev/null" "-o" "BatchMode=yes" "-o" "IdentitiesOnly=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "-i" "/syzkaller/jobs/linux/workdir/image/key" "/tmp/syz-executor980778781" "root@10.128.0.247:./syz-executor980778781"]: exit status 1 ssh: connect to host 10.128.0.247 port 22: Connection timed out lost connection run #1: basic kernel testing failed: failed to copy test binary to VM: failed to run ["scp" "-P" "22" "-F" "/dev/null" "-o" "UserKnownHostsFile=/dev/null" "-o" "BatchMode=yes" "-o" "IdentitiesOnly=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "-i" "/syzkaller/jobs/linux/workdir/image/key" "/tmp/syz-executor694737368" "root@10.128.10.48:./syz-executor694737368"]: exit status 1 ssh: connect to host 10.128.10.48 port 22: Connection timed out lost connection run #2: basic kernel testing failed: failed to copy test binary to VM: failed to run ["scp" "-P" "22" "-F" "/dev/null" "-o" "UserKnownHostsFile=/dev/null" "-o" "BatchMode=yes" "-o" "IdentitiesOnly=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "-i" "/syzkaller/jobs/linux/workdir/image/key" "/tmp/syz-executor880362839" "root@10.128.0.249:./syz-executor880362839"]: exit status 1 ssh: connect to host 10.128.0.249 port 22: Connection timed out lost connection run #3: basic kernel testing failed: failed to copy test binary to VM: failed to run ["scp" "-P" "22" "-F" "/dev/null" "-o" "UserKnownHostsFile=/dev/null" "-o" "BatchMode=yes" "-o" "IdentitiesOnly=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "-i" "/syzkaller/jobs/linux/workdir/image/key" "/tmp/syz-executor630671562" "root@10.128.15.192:./syz-executor630671562"]: exit status 1 ssh: connect to host 10.128.15.192 port 22: Connection timed out lost connection run #4: crashed: INFO: rcu detected stall in corrupted run #5: crashed: INFO: rcu detected stall in cleanup_net run #6: crashed: INFO: rcu detected stall in corrupted run #7: crashed: INFO: rcu detected stall in cleanup_net run #8: crashed: INFO: rcu detected stall in corrupted run #9: crashed: INFO: rcu detected stall in corrupted # git bisect bad 664820265d70a759dceca87b6eb200cd2b93cda8 664820265d70a759dceca87b6eb200cd2b93cda8 is the first bad commit commit 664820265d70a759dceca87b6eb200cd2b93cda8 Author: Mike Snitzer Date: Thu Feb 18 15:44:39 2016 -0500 dm: do not return target from dm_get_live_table_for_ioctl() None of the callers actually used the returned target. Also, just reuse bdev pointer passed to dm_blk_ioctl(). Signed-off-by: Mike Snitzer :040000 040000 7981c00457e316a82971c1b33c36a79b7a6348cf 1261c6c5998654602896e2f8a83ecd30ad90c6df M drivers revisions tested: 32, total time: 5h28m2.112607122s (build: 1h48m1.104391232s, test: 3h31m13.310194489s) first bad commit: 664820265d70a759dceca87b6eb200cd2b93cda8 dm: do not return target from dm_get_live_table_for_ioctl() cc: ["agk@redhat.com" "dm-devel@redhat.com" "linux-kernel@vger.kernel.org" "linux-raid@vger.kernel.org" "shli@kernel.org" "snitzer@redhat.com"] crash: INFO: rcu detected stall in corrupted IPv6: ADDRCONF(NETDEV_CHANGE): nr5: link becomes ready IPv6: ADDRCONF(NETDEV_CHANGE): nr4: link becomes ready IPv6: ADDRCONF(NETDEV_CHANGE): nr6: link becomes ready IPv6: ADDRCONF(NETDEV_CHANGE): nr7: link becomes ready INFO: rcu_preempt self-detected stall on CPU 1-...: (1 GPs behind) idle=6bd/140000000000001/0 softirq=29381/29395 fqs=10000 INFO: rcu_preempt detected stalls on CPUs/tasks: 1-...: (1 GPs behind) idle=6bd/140000000000001/0 softirq=29381/29395 fqs=10000 (detected by 0, t=10002 jiffies, g=1083, c=1082, q=7060) Task dump for CPU 1: kworker/u4:4 R running task 0 2187 2 0x00000008 Workqueue: netns cleanup_net ffffffff8246a8c0 ffff8800b3c407b8 ffff88012b076f80 ffff88012b3791c0 ffff8800ba4dc000 ffff8800ba4dbd58 ffff8800ba4dbd50 ffff88012b3791c0 ffff8800ba4dbd70 ffff8800ba4dbc10 ffffffff8246af04 7fffffffffffffff Call Trace: (t=10020 jiffies g=1083 c=1082 q=7060) Task dump for CPU 1: kworker/u4:4 R running task 0 2187 2 0x00000008 Workqueue: netns cleanup_net 0000000000000002 ffff88012c103dc0 ffffffff811831e6 0000000000000001 ffffffff8305f240 ffff88012c103dd8 ffffffff81185672 0000000000000002 ffff88012c103e08 ffffffff811b1e59 ffff88012c117200 ffffffff8305f240 Call Trace: [] sched_show_task+0xb6/0x120 kernel/sched/core.c:5036 [] dump_cpu_task+0x32/0x40 kernel/sched/core.c:8717 [] rcu_dump_cpu_stacks+0x89/0xe0 kernel/rcu/tree.c:1247 [] print_cpu_stall kernel/rcu/tree.c:1354 [inline] [] check_cpu_stall kernel/rcu/tree.c:1418 [inline] [] __rcu_pending kernel/rcu/tree.c:3906 [inline] [] rcu_pending kernel/rcu/tree.c:3970 [inline] [] rcu_check_callbacks+0x502/0x8c0 kernel/rcu/tree.c:2795 [] update_process_times+0x34/0x60 kernel/time/timer.c:1420 [] tick_sched_handle.isra.16+0x31/0x40 kernel/time/tick-sched.c:152 [] tick_sched_timer+0x38/0x70 kernel/time/tick-sched.c:1088 [] __run_hrtimer kernel/time/hrtimer.c:1248 [inline] [] __hrtimer_run_queues+0x93/0x270 kernel/time/hrtimer.c:1312 [] hrtimer_interrupt+0xa7/0x1a0 kernel/time/hrtimer.c:1346 [] local_apic_timer_interrupt+0x31/0x50 arch/x86/kernel/apic/apic.c:907 [] smp_apic_timer_interrupt+0x38/0x50 arch/x86/kernel/apic/apic.c:931 [] apic_timer_interrupt+0x82/0x90 arch/x86/entry/entry_64.S:687 [] ? __read_once_size include/linux/compiler.h:218 [inline] [] ? atomic_read arch/x86/include/asm/atomic.h:26 [inline] [] ? virt_spin_lock arch/x86/include/asm/qspinlock.h:56 [inline] [] ? native_queued_spin_lock_slowpath+0x9/0x1b0 kernel/locking/qspinlock.c:304 [] spin_lock include/linux/spinlock.h:302 [inline] [] nf_conntrack_lock+0xd/0x50 net/netfilter/nf_conntrack_core.c:74 [] ctnl_untimeout.isra.4+0xc3/0xf0 net/netfilter/nfnetlink_cttimeout.c:315 [] cttimeout_net_exit+0x28/0x80 net/netfilter/nfnetlink_cttimeout.c:581 [] ops_exit_list.isra.4+0x33/0x60 net/core/net_namespace.c:134 [] cleanup_net+0x19b/0x260 net/core/net_namespace.c:431 [] process_one_work+0x150/0x440 kernel/workqueue.c:2095 [] worker_thread+0x49/0x470 kernel/workqueue.c:2229 [] kthread+0xc4/0xe0 drivers/block/aoe/aoecmd.c:1312 [] ret_from_fork+0x3f/0x70 arch/x86/entry/entry_64.S:468