bisecting cause commit starting from 5a30a78924ecd97b0335d2e1d3e01a5023c1a3d8 building syzkaller on 196277c4035b5442b7a259953677543566c9b9a9 testing commit 5a30a78924ecd97b0335d2e1d3e01a5023c1a3d8 with gcc (GCC) 8.1.0 kernel signature: f05084ff3d233aa2f1a3532a0950070cb8362a0bc674eda933cc43237cd03a81 run #0: crashed: BUG: unable to handle kernel paging request in hci_chan_del run #1: crashed: BUG: unable to handle kernel paging request in hci_chan_del run #2: crashed: BUG: unable to handle kernel paging request in hci_chan_del run #3: crashed: general protection fault in hci_chan_del run #4: crashed: BUG: unable to handle kernel paging request in hci_chan_del run #5: crashed: BUG: unable to handle kernel paging request in hci_chan_del run #6: crashed: WARNING: kobject bug in hci_chan_del run #7: crashed: no output from test machine run #8: crashed: no output from test machine run #9: crashed: no output from test machine testing release v5.7 testing commit 3d77e6a8804abcc0504c904bd6e5cdf3a5cf8162 with gcc (GCC) 8.1.0 kernel signature: 5d726a84c247d8044fad74a0a40e90a6e320419024e491c8f1d1296e1963cc5a run #0: crashed: KASAN: use-after-free Read in hci_chan_del run #1: crashed: KASAN: use-after-free Read in hci_chan_del run #2: crashed: KASAN: slab-out-of-bounds Write in hci_chan_del run #3: crashed: KASAN: slab-out-of-bounds Write in hci_chan_del run #4: crashed: KASAN: slab-out-of-bounds Write in hci_chan_del run #5: crashed: KASAN: use-after-free Read in hci_chan_del run #6: OK 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" "/tmp/syz-executor991517023" "root@10.128.10.40:./syz-executor991517023"] Warning: Permanently added '10.128.10.40' (ECDSA) to the list of known hosts. run #8: 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" "/tmp/syz-executor096254185" "root@10.128.1.33:./syz-executor096254185"] Warning: Permanently added '10.128.1.33' (ECDSA) to the list of known hosts. run #9: 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" "/tmp/syz-executor720182580" "root@10.128.10.38:./syz-executor720182580"] Warning: Permanently added '10.128.10.38' (ECDSA) to the list of known hosts. testing release v5.6 testing commit 7111951b8d4973bda27ff663f2cf18b663d15b48 with gcc (GCC) 8.1.0 kernel signature: 3ba2301b5a29c9c3711cc3b77a31797d6ddcd9d526e20454f247993ce936e6ae run #0: crashed: KASAN: use-after-free Read in hci_chan_del run #1: crashed: KASAN: slab-out-of-bounds Write in hci_chan_del run #2: crashed: kernel panic: panic_on_warn set run #3: OK run #4: OK run #5: crashed: KASAN: use-after-free Read in hci_chan_del run #6: 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" "/tmp/syz-executor927323270" "root@10.128.0.112:./syz-executor927323270"] 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" "/tmp/syz-executor631348506" "root@10.128.0.140:./syz-executor631348506"] Warning: Permanently added '10.128.0.140' (ECDSA) to the list of known hosts. run #8: 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" "/tmp/syz-executor787868593" "root@10.128.1.61:./syz-executor787868593"] Warning: Permanently added '10.128.1.61' (ECDSA) to the list of known hosts. run #9: 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" "/tmp/syz-executor878041436" "root@10.128.15.205:./syz-executor878041436"] testing release v5.5 testing commit d5226fa6dbae0569ee43ecfc08bdcd6770fc4755 with gcc (GCC) 8.1.0 kernel signature: 4e9fb8873e13a3d5a8cec571dcdd5f3721f8c3bac99f60bdf85e34c092066be3 run #0: crashed: KASAN: slab-out-of-bounds Write in hci_chan_del run #1: crashed: KASAN: slab-out-of-bounds Write in hci_chan_del run #2: crashed: KASAN: use-after-free Read in hci_chan_del run #3: crashed: KASAN: slab-out-of-bounds Write in hci_chan_del run #4: crashed: kernel panic: panic_on_warn set run #5: crashed: kernel panic: panic_on_warn set run #6: crashed: kernel panic: panic_on_warn set run #7: crashed: kernel panic: panic_on_warn set run #8: OK run #9: crashed: KASAN: slab-out-of-bounds Write in hci_chan_del testing release v5.4 testing commit 219d54332a09e8d8741c1e1982f5eae56099de85 with gcc (GCC) 8.1.0 kernel signature: 2b5cf353aa0964d2f6e655bc19f8a13c0a67624c7844b9019c6272a55f781349 run #0: crashed: KASAN: use-after-free Read in hci_chan_del run #1: crashed: KASAN: slab-out-of-bounds Write in hci_chan_del run #2: crashed: KASAN: slab-out-of-bounds Write in hci_chan_del run #3: crashed: kernel panic: panic_on_warn set run #4: crashed: KASAN: use-after-free Read in hci_chan_del run #5: crashed: KASAN: use-after-free Read in hci_chan_del run #6: OK run #7: OK run #8: OK run #9: 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" "/tmp/syz-executor818577853" "root@10.128.15.199:./syz-executor818577853"] testing release v5.3 testing commit 4d856f72c10ecb060868ed10ff1b1453943fc6c8 with gcc (GCC) 8.1.0 kernel signature: 6ee5a7354a74d617c85270e44a20278464811bd6041db38fbafcd31d8711e52a run #0: crashed: KASAN: use-after-free Read in hci_chan_del run #1: crashed: KASAN: slab-out-of-bounds Read in put_device run #2: crashed: KASAN: use-after-free Read in hci_chan_del run #3: crashed: KASAN: use-after-free Read in hci_chan_del run #4: crashed: KASAN: use-after-free Read in hci_chan_del run #5: crashed: WARNING: kobject bug in put_device run #6: crashed: KASAN: use-after-free Read in hci_chan_del run #7: crashed: WARNING: kobject bug in put_device run #8: crashed: KASAN: use-after-free Read in hci_chan_del run #9: crashed: KASAN: use-after-free Read in hci_chan_del testing release v5.2 testing commit 0ecfebd2b52404ae0c54a878c872bb93363ada36 with gcc (GCC) 8.1.0 kernel signature: 9bdf2b167edf344da0945adcf4e6a6cb91fbcf14d4afa07e2ee5bdbdbaa4d21b run #0: crashed: KASAN: use-after-free Read in hci_chan_del run #1: crashed: KASAN: use-after-free Read in put_device run #2: crashed: KASAN: use-after-free Read in hci_chan_del run #3: crashed: KASAN: use-after-free Read in hci_chan_del run #4: crashed: KASAN: use-after-free Read in hci_chan_del run #5: crashed: WARNING: locking bug in skb_dequeue run #6: crashed: KASAN: use-after-free Read in hci_chan_del run #7: crashed: kernel panic: panic_on_warn set run #8: crashed: KASAN: use-after-free Read in hci_chan_del run #9: 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" "/tmp/syz-executor671887651" "root@10.128.15.205:./syz-executor671887651"] testing release v5.1 testing commit e93c9c99a629c61837d5a7fc2120cd2b6c70dbdd with gcc (GCC) 8.1.0 kernel signature: a2c89f71ef48abe9959c171d317cdb9aade8d64b165dae256d435c8f72495425 run #0: crashed: KASAN: use-after-free Read in hci_chan_del run #1: crashed: KASAN: use-after-free Read in hci_chan_del run #2: crashed: KASAN: use-after-free Read in hci_chan_del run #3: crashed: general protection fault in hci_chan_del run #4: crashed: KASAN: use-after-free Read in hci_chan_del run #5: crashed: KASAN: use-after-free Read in hci_chan_del run #6: crashed: KASAN: use-after-free Read in hci_chan_del run #7: crashed: KASAN: use-after-free Read in hci_chan_del run #8: crashed: KASAN: use-after-free Read in hci_chan_del run #9: crashed: KASAN: use-after-free Read in hci_chan_del testing release v5.0 testing commit 1c163f4c7b3f621efff9b28a47abb36f7378d783 with gcc (GCC) 8.1.0 kernel signature: 3b515f3fa6e270fa044b9ba2104b508942792470d11b3e9599d759cd1616595c all runs: crashed: KASAN: use-after-free Read in hci_chan_del testing release v4.20 testing commit 8fe28cb58bcb235034b64cbbb7550a8a43fd88be with gcc (GCC) 8.1.0 kernel signature: ab5a02945b7172c7c19ebf6bfec4aa42b848be8fc2b584f82ca85702e3a0ac80 run #0: crashed: KASAN: use-after-free Read in hci_chan_del run #1: crashed: KASAN: use-after-free Read in hci_chan_del run #2: crashed: KASAN: use-after-free Read in hci_chan_del run #3: crashed: KASAN: use-after-free Read in hci_chan_del run #4: crashed: KASAN: use-after-free Read in hci_chan_del run #5: 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" "/tmp/syz-executor652369807" "root@10.128.10.51:./syz-executor652369807"] run #6: 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" "/tmp/syz-executor083922338" "root@10.128.15.192:./syz-executor083922338"] Warning: Permanently added '10.128.15.192' (ECDSA) to the list of known hosts. 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" "/tmp/syz-executor327228569" "root@10.128.15.211:./syz-executor327228569"] Warning: Permanently added '10.128.15.211' (ECDSA) to the list of known hosts. run #8: 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" "/tmp/syz-executor359208740" "root@10.128.15.202:./syz-executor359208740"] Warning: Permanently added '10.128.15.202' (ECDSA) to the list of known hosts. run #9: 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" "/tmp/syz-executor789142579" "root@10.128.15.214:./syz-executor789142579"] testing release v4.19 testing commit 84df9525b0c27f3ebc2ebb1864fa62a97fdedb7d with gcc (GCC) 8.1.0 kernel signature: 5c1228b55eb313ba750f05deed0622292e06a2be26fedc88b204a33d85ad557e run #0: crashed: KASAN: use-after-free Read in hci_chan_del run #1: crashed: KASAN: use-after-free Read in hci_chan_del run #2: crashed: KASAN: use-after-free Read in hci_chan_del run #3: crashed: KASAN: use-after-free Read in hci_chan_del run #4: crashed: KASAN: use-after-free Read in hci_chan_del run #5: crashed: KASAN: use-after-free Read in hci_chan_del run #6: crashed: KASAN: use-after-free Read in hci_chan_del 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" "/tmp/syz-executor159839896" "root@10.128.15.193:./syz-executor159839896"] Warning: Permanently added '10.128.15.193' (ECDSA) to the list of known hosts. run #8: 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" "/tmp/syz-executor681210135" "root@10.128.15.200:./syz-executor681210135"] Warning: Permanently added '10.128.15.200' (ECDSA) to the list of known hosts. run #9: 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" "/tmp/syz-executor681419146" "root@10.128.15.202:./syz-executor681419146"] testing release v4.18 testing commit 94710cac0ef4ee177a63b5227664b38c95bbf703 with gcc (GCC) 8.1.0 kernel signature: 45219c3c937aefc76cc401ebd3a5546f88c43d77ac475400ca71a4c8bec9bb65 run #0: crashed: KASAN: use-after-free Read in hci_chan_del run #1: crashed: KASAN: use-after-free Read in hci_chan_del run #2: crashed: KASAN: use-after-free Read in hci_chan_del run #3: crashed: KASAN: use-after-free Read in hci_chan_del run #4: crashed: KASAN: use-after-free Read in hci_chan_del run #5: crashed: KASAN: use-after-free Read in hci_chan_del run #6: crashed: KASAN: use-after-free Read in hci_chan_del run #7: crashed: KASAN: use-after-free Read in hci_chan_del run #8: 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" "/tmp/syz-executor040358220" "root@10.128.15.197:./syz-executor040358220"] Warning: Permanently added '10.128.15.197' (ECDSA) to the list of known hosts. run #9: 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" "/tmp/syz-executor070606907" "root@10.128.15.207:./syz-executor070606907"] testing release v4.17 testing commit 29dcea88779c856c7dc92040a0c01233263101d4 with gcc (GCC) 8.1.0 kernel signature: d443bdfccee47d97288c3b2aec30830c829b5b7c2623e7796898b76390334847 run #0: crashed: KASAN: use-after-free Read in hci_chan_del run #1: crashed: KASAN: use-after-free Read in hci_chan_del run #2: crashed: KASAN: use-after-free Read in hci_chan_del run #3: crashed: KASAN: use-after-free Read in hci_chan_del run #4: crashed: KASAN: use-after-free Read in hci_chan_del run #5: crashed: KASAN: use-after-free Read in hci_chan_del run #6: crashed: KASAN: use-after-free Read in hci_chan_del run #7: crashed: KASAN: use-after-free Read in hci_chan_del run #8: crashed: KASAN: use-after-free Read in hci_chan_del run #9: 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" "/tmp/syz-executor534007845" "root@10.128.15.198:./syz-executor534007845"] Warning: Permanently added '10.128.15.198' (ECDSA) to the list of known hosts. testing release v4.16 testing commit 0adb32858b0bddf4ada5f364a84ed60b196dbcda with gcc (GCC) 8.1.0 kernel signature: 40fc8f52b0c65dc55ae8a072655fd3e53b84c9b5eb80ce053477de2c8e07c2b9 all runs: crashed: KASAN: use-after-free Read in hci_chan_del testing release v4.15 testing commit d8a5b80568a9cb66810e75b182018e9edb68e8ff with gcc (GCC) 8.1.0 kernel signature: 9e43ff9c4857887636cafbcd66c34cfac9afcb4252ad2c2c1f0fc1685e5f0866 run #0: crashed: KASAN: use-after-free Read in hci_chan_del run #1: crashed: KASAN: use-after-free Read in hci_chan_del run #2: crashed: KASAN: use-after-free Read in hci_chan_del run #3: crashed: KASAN: use-after-free Read in hci_chan_del run #4: crashed: KASAN: use-after-free Read in hci_chan_del run #5: crashed: KASAN: use-after-free Read in hci_chan_del run #6: crashed: kernel panic: panic_on_warn set run #7: crashed: KASAN: use-after-free Read in hci_chan_del run #8: OK run #9: crashed: KASAN: use-after-free Read in hci_chan_del testing release v4.14 testing commit bebc6082da0a9f5d47a1ea2edc099bf671058bd4 with gcc (GCC) 8.1.0 kernel signature: 0a0c558a5845d6f9602032aa0c1b938cffa3c5653c409fb33de40fac738ba9d7 all runs: crashed: KASAN: use-after-free Read in hci_chan_del testing release v4.13 testing commit 569dbb88e80deb68974ef6fdd6a13edb9d686261 with gcc (GCC) 8.1.0 kernel signature: 8dda6e12d806319a8d39081775f76e9afef4ae22daecfe0ec3f5ef9bc685e1da all runs: crashed: KASAN: use-after-free Read in hci_chan_del testing release v4.12 testing commit 6f7da290413ba713f0cdd9ff1a2a9bb129ef4f6c with gcc (GCC) 8.1.0 kernel signature: b431bdee63fdb035e2df0f6f49e150aa9978c0a9466631f8de06453331dc49f7 all runs: crashed: BUG: sleeping function called from invalid context in tap_get_minor testing release v4.11 testing commit a351e9b9fc24e982ec2f0e76379a49826036da12 with gcc (GCC) 7.3.0 kernel signature: 6fbbdbfeddaeef273224c4e6afc13a44e9d9e21f2afe505b08af0008cb41662e all runs: crashed: BUG: sleeping function called from invalid context in tap_get_minor testing release v4.10 testing commit c470abd4fde40ea6a0846a2beab642a578c0b8cd with gcc (GCC) 5.5.0 kernel signature: 0d38b1e453fb9c4ef0a1d036a85fa2e07d1c6fd6d6a785d9d67670bd6bd8ec67 all runs: crashed: KASAN: use-after-free Read in hci_chan_del testing release v4.9 testing commit 69973b830859bc6529a7a0468ba0d80ee5117826 with gcc (GCC) 5.5.0 kernel signature: faea4bbb5419056fe0985efd4946548ccb234a2d6e670ec2407b760c2b4f036c all runs: OK # git bisect start c470abd4fde40ea6a0846a2beab642a578c0b8cd 69973b830859bc6529a7a0468ba0d80ee5117826 Bisecting: 7099 revisions left to test after this (roughly 13 steps) [f4000cd99750065d5177555c0a805c97174d1b9f] Merge tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux testing commit f4000cd99750065d5177555c0a805c97174d1b9f with gcc (GCC) 5.5.0 kernel signature: 9c52dd834a83d94df391525ee3b0f736d09e4f5995434e0a6eec0952c44fe8e8 run #0: boot failed: can't ssh into the instance run #1: boot failed: can't ssh into the instance run #2: boot failed: WARNING: unrecognized kernel stack return address ADDR at ADDR in systemd-udevd:LINE run #3: boot failed: can't ssh into the instance run #4: boot failed: can't ssh into the instance run #5: boot failed: can't ssh into the instance run #6: boot failed: WARNING: unrecognized kernel stack return address ADDR at ADDR in (imesyncd):LINE run #7: boot failed: WARNING: unrecognized kernel stack return address ADDR at ADDR in systemd-udevd:LINE run #8: boot failed: can't ssh into the instance run #9: boot failed: can't ssh into the instance # git bisect skip f4000cd99750065d5177555c0a805c97174d1b9f Bisecting: 7099 revisions left to test after this (roughly 13 steps) [ab1effc09519f3bb4b84dd6d8276cedf07b17a1b] staging: ks7010: Add blank line after declarations testing commit ab1effc09519f3bb4b84dd6d8276cedf07b17a1b with gcc (GCC) 5.5.0 kernel signature: 7408f648cc568326428bb39306e96e72f75c2bdc06d6ecf28601da8f4de9e351 run #0: crashed: WARNING in nf_unregister_net_hook run #1: OK run #2: OK run #3: OK run #4: OK run #5: OK run #6: OK run #7: OK run #8: crashed: WARNING in nf_unregister_net_hook run #9: OK # git bisect bad ab1effc09519f3bb4b84dd6d8276cedf07b17a1b Bisecting: 141 revisions left to test after this (roughly 7 steps) [d70c509152292cd4cc741f97ce043e0f65f72689] staging:r8188eu: remove precv_frame_buf member of recv_priv structure testing commit d70c509152292cd4cc741f97ce043e0f65f72689 with gcc (GCC) 5.5.0 kernel signature: 4c484bdce503f3ce8fbd954d4421bbb1e6ae9948b2e50429bcddb762845ad199 run #0: crashed: WARNING in nf_unregister_net_hook 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: crashed: WARNING in nf_unregister_net_hook # git bisect bad d70c509152292cd4cc741f97ce043e0f65f72689 Bisecting: 71 revisions left to test after this (roughly 6 steps) [c10364e1f4f6cc7e8c3f2e6a3ecb96da8769f10b] staging: rtl8188eu: core: removes unecessary parenthesis testing commit c10364e1f4f6cc7e8c3f2e6a3ecb96da8769f10b with gcc (GCC) 5.5.0 kernel signature: 7773ee9ea3a8149b49b4dbbcbfe61ba1ca50327240cd052925622172525545c7 all runs: basic kernel testing failed: timed out # git bisect skip c10364e1f4f6cc7e8c3f2e6a3ecb96da8769f10b Bisecting: 71 revisions left to test after this (roughly 6 steps) [9872fa751e0bad862161c442d44b7ea597e23676] Staging: sm750fb: fix do not add new typedefs warning testing commit 9872fa751e0bad862161c442d44b7ea597e23676 with gcc (GCC) 5.5.0 kernel signature: 6bd7287ee791d7b11cd1f0e36614888df503cd1715c07f9eab5747876242d520 run #0: crashed: WARNING in nf_unregister_net_hook run #1: crashed: WARNING in nf_unregister_net_hook run #2: crashed: WARNING in nf_unregister_net_hook run #3: OK run #4: OK run #5: OK run #6: OK run #7: OK run #8: crashed: WARNING in nf_unregister_net_hook run #9: crashed: WARNING in nf_unregister_net_hook # git bisect bad 9872fa751e0bad862161c442d44b7ea597e23676 Bisecting: 1 revision left to test after this (roughly 1 step) [232664b386e125962682165353971fba5cb13527] staging/vchi: Update for rename of page_cache_release() to put_page(). testing commit 232664b386e125962682165353971fba5cb13527 with gcc (GCC) 5.5.0 kernel signature: 4ddf18992a152b16f6333194e7d2f9f84e01946afc2cb67ae2949260698735ca run #0: crashed: WARNING in nf_unregister_net_hook 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 bad 232664b386e125962682165353971fba5cb13527 Bisecting: 0 revisions left to test after this (roughly 0 steps) [166beccd47e11e4d27477e8ca1d7eda47cf3b2da] staging/vchi: Convert to current get_user_pages() arguments. testing commit 166beccd47e11e4d27477e8ca1d7eda47cf3b2da with gcc (GCC) 5.5.0 kernel signature: cae777866a56fea628ab6233b8270be706754f02667444718d7e670fcd70de21 run #0: OK run #1: OK run #2: OK run #3: OK run #4: OK run #5: OK run #6: OK run #7: crashed: WARNING in nf_unregister_net_hook run #8: crashed: WARNING in nf_unregister_net_hook run #9: crashed: WARNING in nf_unregister_net_hook # git bisect bad 166beccd47e11e4d27477e8ca1d7eda47cf3b2da 166beccd47e11e4d27477e8ca1d7eda47cf3b2da is the first bad commit commit 166beccd47e11e4d27477e8ca1d7eda47cf3b2da Author: Eric Anholt Date: Mon Oct 3 11:52:06 2016 -0700 staging/vchi: Convert to current get_user_pages() arguments. Signed-off-by: Eric Anholt Signed-off-by: Greg Kroah-Hartman drivers/staging/vc04_services/interface/vchiq_arm/vchiq_2835_arm.c | 2 +- drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.c | 3 +-- 2 files changed, 2 insertions(+), 3 deletions(-) parent commit 1001354ca34179f3db924eb66672442a173147dc wasn't tested testing commit 1001354ca34179f3db924eb66672442a173147dc with gcc (GCC) 5.5.0 kernel signature: f5a2fca9402ddcab199f4db140e553b7875631edbe069f4a1a2d264f2a1b90b6 culprit signature: cae777866a56fea628ab6233b8270be706754f02667444718d7e670fcd70de21 parent signature: f5a2fca9402ddcab199f4db140e553b7875631edbe069f4a1a2d264f2a1b90b6 revisions tested: 28, total time: 7h15m22.562495431s (build: 2h36m28.314602594s, test: 4h34m32.289863209s) first bad commit: 166beccd47e11e4d27477e8ca1d7eda47cf3b2da staging/vchi: Convert to current get_user_pages() arguments. recipients (to): ["devel@driverdev.osuosl.org" "eric@anholt.net" "gregkh@linuxfoundation.org" "gregkh@linuxfoundation.org"] recipients (cc): ["linux-kernel@vger.kernel.org"] crash: WARNING in nf_unregister_net_hook bond0 (unregistering): Releasing backup interface bond_slave_1 bond0 (unregistering): Releasing backup interface bond_slave_0 bond0 (unregistering): Released all slaves ------------[ cut here ]------------ WARNING: CPU: 1 PID: 26450 at net/netfilter/core.c:151 nf_unregister_net_hook+0x28a/0x3c0 net/netfilter/core.c:151 nf_unregister_net_hook: hook not found! Kernel panic - not syncing: panic_on_warn set ... CPU: 1 PID: 26450 Comm: kworker/u4:0 Not tainted 4.9.0-rc1-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: netns cleanup_net ffff880128a77890 ffffffff82d76a92 ffffffff86085f80 ffff880128a77968 ffffffff868b2400 ffffffff84d73d0a 0000000000000009 ffff880128a77958 ffffffff81641ef2 0000000041b58ab3 ffffffff86d6766f ffffffff81641d3c Call Trace: [] __dump_stack lib/dump_stack.c:15 [inline] [] dump_stack+0x136/0x1d4 lib/dump_stack.c:51 [] panic+0x1b6/0x358 kernel/panic.c:179 [] __warn+0x18d/0x1b0 kernel/panic.c:542 [] warn_slowpath_fmt+0x92/0xb0 kernel/panic.c:565 [] nf_unregister_net_hook+0x28a/0x3c0 net/netfilter/core.c:151 [] nf_unregister_hook_list net/netfilter/core.c:484 [inline] [] netfilter_net_exit+0x36/0xa0 net/netfilter/core.c:516 [] ops_exit_list.isra.0+0x8e/0x120 net/core/net_namespace.c:136 [] cleanup_net+0x2d0/0x570 net/core/net_namespace.c:449 [] process_one_work+0x67d/0x14d0 kernel/workqueue.c:2096 [] worker_thread+0xe1/0x1050 kernel/workqueue.c:2230 [] kthread+0x20e/0x2d0 kernel/kthread.c:209 [] ret_from_fork+0x2a/0x40 arch/x86/entry/entry_64.S:433 Kernel Offset: disabled