bisecting cause commit starting from 96d454cd2c1668010406ea4c28ab915bcbb747f4
building syzkaller on d5a3ae1f760e7cb2cd5a721d9645ae22eae114fe
testing commit 96d454cd2c1668010406ea4c28ab915bcbb747f4 with gcc (GCC) 8.1.0
kernel signature: fa6530fa0cf67c1d2317062298e120a2f37c4a1681ab85dce8fd7dd9e2aa77a6
run #0: crashed: INFO: task hung in do_proc_bulk
run #1: crashed: INFO: task hung in do_proc_bulk
run #2: crashed: INFO: task hung in do_proc_bulk
run #3: crashed: INFO: task hung in do_proc_bulk
run #4: OK
run #5: OK
run #6: OK
run #7: OK
run #8: OK
run #9: OK
testing release v5.8
testing commit bcf876870b95592b52519ed4aafcf9d95999bc9c with gcc (GCC) 8.1.0
kernel signature: e980740235b4e26ffadae30f779023a2282977bbd844598d45717541075f21d6
run #0: crashed: INFO: task hung in proc_bulk
run #1: crashed: INFO: task hung in proc_bulk
run #2: crashed: INFO: task hung in proc_bulk
run #3: crashed: INFO: task hung in proc_bulk
run #4: OK
run #5: OK
run #6: OK
run #7: OK
run #8: OK
run #9: OK
testing release v5.7
testing commit 3d77e6a8804abcc0504c904bd6e5cdf3a5cf8162 with gcc (GCC) 8.1.0
kernel signature: b1d604b1c4fee40de92e9446c8d2ef18217cb053529b20366ead9b91826a568e
run #0: crashed: INFO: task hung in proc_bulk
run #1: crashed: INFO: task hung in proc_bulk
run #2: crashed: INFO: task hung in proc_bulk
run #3: crashed: INFO: task hung in proc_bulk
run #4: crashed: INFO: task hung in proc_bulk
run #5: OK
run #6: OK
run #7: OK
run #8: OK
run #9: OK
testing release v5.6
testing commit 7111951b8d4973bda27ff663f2cf18b663d15b48 with gcc (GCC) 8.1.0
kernel signature: 8dd8861fbd91cc4900012f133322e83a563cb12bbd227385ef987a1d7e4da4a9
run #0: crashed: INFO: task hung in proc_bulk
run #1: crashed: INFO: task hung in proc_bulk
run #2: crashed: INFO: task hung in proc_bulk
run #3: crashed: INFO: task hung in proc_bulk
run #4: crashed: INFO: task hung in proc_bulk
run #5: crashed: INFO: task hung in proc_bulk
run #6: crashed: INFO: task hung in proc_bulk
run #7: crashed: INFO: task hung in proc_bulk
run #8: OK
run #9: OK
testing release v5.5
testing commit d5226fa6dbae0569ee43ecfc08bdcd6770fc4755 with gcc (GCC) 8.1.0
kernel signature: e359c29b9c7b48381ac9072b4ac0a5a06b21dd749977123893e069ddec7b5ddd
run #0: crashed: INFO: task hung in proc_bulk
run #1: crashed: INFO: task hung in proc_bulk
run #2: crashed: INFO: task hung in proc_bulk
run #3: crashed: INFO: task hung in proc_bulk
run #4: crashed: INFO: task hung in proc_bulk
run #5: crashed: INFO: task hung in proc_bulk
run #6: OK
run #7: OK
run #8: OK
run #9: OK
testing release v5.4
testing commit 219d54332a09e8d8741c1e1982f5eae56099de85 with gcc (GCC) 8.1.0
kernel signature: 123316abd51cfc5cdee90ef38fa8e01ad72b88212340cb71d21bf981544b316d
run #0: crashed: INFO: task hung in proc_bulk
run #1: crashed: INFO: task hung in proc_bulk
run #2: crashed: INFO: task hung in proc_bulk
run #3: crashed: INFO: task hung in proc_bulk
run #4: OK
run #5: OK
run #6: OK
run #7: OK
run #8: OK
run #9: OK
testing release v5.3
testing commit 4d856f72c10ecb060868ed10ff1b1453943fc6c8 with gcc (GCC) 8.1.0
kernel signature: ca97c98a4a0da601a22de223f39ee8af19892008448f2fc47a804cabd54c23fb
run #0: crashed: INFO: task hung in usb_bulk_msg
run #1: crashed: INFO: task hung in usb_bulk_msg
run #2: crashed: INFO: task hung in usb_bulk_msg
run #3: crashed: INFO: task hung in usb_bulk_msg
run #4: OK
run #5: OK
run #6: OK
run #7: OK
run #8: OK
run #9: OK
testing release v5.2
testing commit 0ecfebd2b52404ae0c54a878c872bb93363ada36 with gcc (GCC) 8.1.0
kernel signature: 212f9462db2725576fc350379ab15c3bfa6357d94d56f3ea3e84292e76e75447
run #0: crashed: INFO: task hung in usb_bulk_msg
run #1: crashed: INFO: task hung in usb_bulk_msg
run #2: crashed: INFO: task hung in usb_bulk_msg
run #3: crashed: INFO: task hung in usb_bulk_msg
run #4: crashed: INFO: task hung in usb_bulk_msg
run #5: OK
run #6: OK
run #7: OK
run #8: OK
run #9: OK
testing release v5.1
testing commit e93c9c99a629c61837d5a7fc2120cd2b6c70dbdd with gcc (GCC) 8.1.0
kernel signature: a80f3031b014cd4f7fc8f087c076cd9be044fca85ecfc6109f3bfdf0588bfe93
run #0: crashed: INFO: task hung in usb_bulk_msg
run #1: crashed: INFO: task hung in usb_bulk_msg
run #2: crashed: INFO: task hung in usb_bulk_msg
run #3: crashed: INFO: task hung in usb_bulk_msg
run #4: crashed: INFO: task hung in usb_bulk_msg
run #5: crashed: INFO: task hung in usb_bulk_msg
run #6: OK
run #7: OK
run #8: OK
run #9: OK
testing release v5.0
testing commit 1c163f4c7b3f621efff9b28a47abb36f7378d783 with gcc (GCC) 8.1.0
kernel signature: 45a2d382a016e5064b63586cc35b2c4de116e4502bb345d69af15be2ade639e2
run #0: crashed: INFO: task hung in usb_bulk_msg
run #1: crashed: INFO: task hung in usb_bulk_msg
run #2: crashed: INFO: task hung in usb_bulk_msg
run #3: crashed: INFO: task hung in usb_bulk_msg
run #4: OK
run #5: OK
run #6: OK
run #7: OK
run #8: OK
run #9: OK
testing release v4.20
testing commit 8fe28cb58bcb235034b64cbbb7550a8a43fd88be with gcc (GCC) 8.1.0
kernel signature: 625b388e35c0e9a27a99a7fc8c4757d15ef4b474874f7673b4ebcb6d191bd6f3
run #0: crashed: INFO: task hung in usb_bulk_msg
run #1: crashed: INFO: task hung in usb_bulk_msg
run #2: crashed: INFO: task hung in usb_bulk_msg
run #3: OK
run #4: OK
run #5: OK
run #6: OK
run #7: OK
run #8: OK
run #9: OK
testing release v4.19
testing commit 84df9525b0c27f3ebc2ebb1864fa62a97fdedb7d with gcc (GCC) 8.1.0
kernel signature: 38c70670828adff754b109ad65c364b6635c7d912912bf7a84dcc320d116414e
run #0: crashed: INFO: task hung in usb_bulk_msg
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 release v4.18
testing commit 94710cac0ef4ee177a63b5227664b38c95bbf703 with gcc (GCC) 8.1.0
kernel signature: b65c80bdfbc3c64f41d1d34dc0b4c944c295231e2eb685f04a50c324262bb72f
run #0: crashed: INFO: task hung in usb_bulk_msg
run #1: crashed: INFO: task hung in usb_bulk_msg
run #2: crashed: INFO: task hung in usb_bulk_msg
run #3: crashed: INFO: task hung in usb_bulk_msg
run #4: crashed: INFO: task hung in usb_bulk_msg
run #5: OK
run #6: OK
run #7: OK
run #8: OK
run #9: OK
testing release v4.17
testing commit 29dcea88779c856c7dc92040a0c01233263101d4 with gcc (GCC) 8.1.0
kernel signature: aaed3e23529cf6e769a32e84aadd843fbbad15dfb86589d21e3c51204c4fb094
run #0: crashed: INFO: task hung in usb_bulk_msg
run #1: crashed: INFO: task hung in usb_bulk_msg
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 release v4.16
testing commit 0adb32858b0bddf4ada5f364a84ed60b196dbcda with gcc (GCC) 8.1.0
kernel signature: 40045cc12249841c6e436bfec1fdd969a5d8d45257a2d2be2f2e544f608869f2
run #0: crashed: INFO: task hung in usb_bulk_msg
run #1: crashed: INFO: task hung in usb_bulk_msg
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 release v4.15
testing commit d8a5b80568a9cb66810e75b182018e9edb68e8ff with gcc (GCC) 8.1.0
kernel signature: a18727adddba2785cb612ce45058d83c23f33f4bd00821795b7133fdd8fc61cc
run #0: crashed: INFO: task hung in usb_bulk_msg
run #1: crashed: INFO: task hung in usb_bulk_msg
run #2: crashed: INFO: task hung in usb_bulk_msg
run #3: crashed: INFO: task hung in usb_bulk_msg
run #4: crashed: INFO: task hung in synchronize_rcu
run #5: crashed: INFO: task hung in usb_bulk_msg
run #6: crashed: INFO: task hung in synchronize_rcu
run #7: crashed: INFO: task hung in synchronize_rcu
run #8: OK
run #9: OK
testing release v4.14
testing commit bebc6082da0a9f5d47a1ea2edc099bf671058bd4 with gcc (GCC) 8.1.0
kernel signature: b1fa154af27508ecbac1b287b17d9ffd654d94f0c47b6f7c28751341eee27e38
run #0: crashed: INFO: task hung in synchronize_rcu
run #1: crashed: INFO: task hung in synchronize_rcu
run #2: crashed: INFO: task hung in synchronize_rcu
run #3: crashed: INFO: task hung in synchronize_rcu
run #4: crashed: INFO: task hung in synchronize_rcu
run #5: crashed: INFO: task hung in synchronize_rcu
run #6: crashed: INFO: task hung in synchronize_rcu
run #7: crashed: INFO: task hung in synchronize_rcu
run #8: OK
run #9: OK
testing release v4.13
testing commit 569dbb88e80deb68974ef6fdd6a13edb9d686261 with gcc (GCC) 8.1.0
kernel signature: f07ff557906809e806105a2d5e158eaa08d153457f0fc229d13c790ed68dcd0c
all runs: OK
# git bisect start bebc6082da0a9f5d47a1ea2edc099bf671058bd4 569dbb88e80deb68974ef6fdd6a13edb9d686261
Bisecting: 7300 revisions left to test after this (roughly 13 steps)
[15d8ffc96464f6571ecf22043c45fad659f11bdd] Merge tag 'mmc-v4.14' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc
testing commit 15d8ffc96464f6571ecf22043c45fad659f11bdd with gcc (GCC) 8.1.0
kernel signature: ae035d95b7cf1e46c0e57e0fce8c8997479a0eb9a9fac19b709a801b78e5f7c8
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" "/syzkaller/jobs/linux/gopath/src/github.com/google/syzkaller/bin/linux_amd64/syz-executor" "root@10.128.10.60:./syz-executor"]: exit status 1
ssh: connect to host 10.128.10.60 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" "/syzkaller/jobs/linux/gopath/src/github.com/google/syzkaller/bin/linux_amd64/syz-executor" "root@10.128.0.203:./syz-executor"]: exit status 1
ssh: connect to host 10.128.0.203 port 22: Connection timed out
lost connection

run #2: 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/gopath/src/github.com/google/syzkaller/bin/linux_amd64/syz-execprog" "root@10.128.10.57:./syz-execprog"]
Warning: Permanently added '10.128.10.57' (ECDSA) to the list of known hosts.

run #3: 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/gopath/src/github.com/google/syzkaller/bin/linux_amd64/syz-execprog" "root@10.128.15.193:./syz-execprog"]
Warning: Permanently added '10.128.15.193' (ECDSA) to the list of known hosts.

run #4: 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/gopath/src/github.com/google/syzkaller/bin/linux_amd64/syz-execprog" "root@10.128.15.192:./syz-execprog"]
Warning: Permanently added '10.128.15.192' (ECDSA) to the list of known hosts.

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" "/syzkaller/jobs/linux/gopath/src/github.com/google/syzkaller/bin/linux_amd64/syz-execprog" "root@10.128.0.233:./syz-execprog"]
Warning: Permanently added '10.128.0.233' (ECDSA) to the list of known hosts.

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" "/syzkaller/jobs/linux/gopath/src/github.com/google/syzkaller/bin/linux_amd64/syz-execprog" "root@10.128.0.131:./syz-execprog"]
Warning: Permanently added '10.128.0.131' (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" "/syzkaller/jobs/linux/gopath/src/github.com/google/syzkaller/bin/linux_amd64/syz-execprog" "root@10.128.10.56:./syz-execprog"]
Warning: Permanently added '10.128.10.56' (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" "/syzkaller/jobs/linux/gopath/src/github.com/google/syzkaller/bin/linux_amd64/syz-execprog" "root@10.128.10.55:./syz-execprog"]
Warning: Permanently added '10.128.10.55' (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" "/syzkaller/jobs/linux/gopath/src/github.com/google/syzkaller/bin/linux_amd64/syz-execprog" "root@10.128.10.51:./syz-execprog"]
Warning: Permanently added '10.128.10.51' (ECDSA) to the list of known hosts.

# git bisect skip 15d8ffc96464f6571ecf22043c45fad659f11bdd
Bisecting: 7300 revisions left to test after this (roughly 13 steps)
[ace743214ea205c7d433562c5fa24e33bdfda7ab] net/mlx5e: Fix erroneous freeing of encap header buffer
testing commit ace743214ea205c7d433562c5fa24e33bdfda7ab with gcc (GCC) 8.1.0
kernel signature: 7da5ae060b8caef4b559220591228030d9fd5bc412da136c0156b8d149004b61
run #0: crashed: INFO: task hung in synchronize_rcu
run #1: crashed: INFO: task hung in synchronize_rcu
run #2: crashed: INFO: task hung in synchronize_rcu
run #3: crashed: INFO: task hung in synchronize_rcu
run #4: OK
run #5: OK
run #6: OK
run #7: OK
run #8: OK
run #9: OK
# git bisect bad ace743214ea205c7d433562c5fa24e33bdfda7ab
Bisecting: 6370 revisions left to test after this (roughly 13 steps)
[aae3dbb4776e7916b6cd442d00159bea27a695c1] Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next
testing commit aae3dbb4776e7916b6cd442d00159bea27a695c1 with gcc (GCC) 8.1.0
kernel signature: 2b989a0f1b15717c91b3eb3985d07ef2f7420c07514dc46d5ed6f9d118c5fa9f
run #0: 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/gopath/src/github.com/google/syzkaller/bin/linux_amd64/syz-execprog" "root@10.128.15.212:./syz-execprog"]
Warning: Permanently added '10.128.15.212' (ECDSA) to the list of known hosts.

run #1: 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/gopath/src/github.com/google/syzkaller/bin/linux_amd64/syz-execprog" "root@10.128.15.215:./syz-execprog"]
Warning: Permanently added '10.128.15.215' (ECDSA) to the list of known hosts.

run #2: 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/gopath/src/github.com/google/syzkaller/bin/linux_amd64/syz-execprog" "root@10.128.15.210:./syz-execprog"]
Warning: Permanently added '10.128.15.210' (ECDSA) to the list of known hosts.

run #3: 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/gopath/src/github.com/google/syzkaller/bin/linux_amd64/syz-execprog" "root@10.128.15.219:./syz-execprog"]
Warning: Permanently added '10.128.15.219' (ECDSA) to the list of known hosts.

run #4: 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/gopath/src/github.com/google/syzkaller/bin/linux_amd64/syz-execprog" "root@10.128.0.100:./syz-execprog"]
Warning: Permanently added '10.128.0.100' (ECDSA) to the list of known hosts.

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" "/syzkaller/jobs/linux/gopath/src/github.com/google/syzkaller/bin/linux_amd64/syz-execprog" "root@10.128.15.221:./syz-execprog"]
Warning: Permanently added '10.128.15.221' (ECDSA) to the list of known hosts.

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" "/syzkaller/jobs/linux/gopath/src/github.com/google/syzkaller/bin/linux_amd64/syz-execprog" "root@10.128.0.9:./syz-execprog"]
Warning: Permanently added '10.128.0.9' (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" "/syzkaller/jobs/linux/gopath/src/github.com/google/syzkaller/bin/linux_amd64/syz-execprog" "root@10.128.15.213:./syz-execprog"]
Warning: Permanently added '10.128.15.213' (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" "/syzkaller/jobs/linux/gopath/src/github.com/google/syzkaller/bin/linux_amd64/syz-execprog" "root@10.128.15.222:./syz-execprog"]
Warning: Permanently added '10.128.15.222' (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" "/syzkaller/jobs/linux/gopath/src/github.com/google/syzkaller/bin/linux_amd64/syz-execprog" "root@10.128.1.29:./syz-execprog"]
Warning: Permanently added '10.128.1.29' (ECDSA) to the list of known hosts.

# git bisect skip aae3dbb4776e7916b6cd442d00159bea27a695c1
Bisecting: 6370 revisions left to test after this (roughly 13 steps)
[f5808ac158f2b16b686a3d3c0879c5d6048aba14] leds: gpio: Allow LED to retain state at shutdown
testing commit f5808ac158f2b16b686a3d3c0879c5d6048aba14 with gcc (GCC) 8.1.0
kernel signature: 5da2aa9d595c1173303f979bfe138bf082f93c999ffd54405908cce28be1cf9d
all runs: OK
# git bisect good f5808ac158f2b16b686a3d3c0879c5d6048aba14
Bisecting: 6353 revisions left to test after this (roughly 13 steps)
[da4c3c735ea4dcc2a0b0ff0bd4803c336361b6f5] mm/hmm/mirror: helper to snapshot CPU page table
testing commit da4c3c735ea4dcc2a0b0ff0bd4803c336361b6f5 with gcc (GCC) 8.1.0
kernel signature: 7b5f8de8081a600e058ab5ff7cf9f24c1d3af9f7da2bf88910adf10f5d9243ed
run #0: 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/gopath/src/github.com/google/syzkaller/bin/linux_amd64/syz-execprog" "root@10.128.15.213:./syz-execprog"]
Warning: Permanently added '10.128.15.213' (ECDSA) to the list of known hosts.

run #1: 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/gopath/src/github.com/google/syzkaller/bin/linux_amd64/syz-execprog" "root@10.128.15.216:./syz-execprog"]
Warning: Permanently added '10.128.15.216' (ECDSA) to the list of known hosts.

run #2: 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/gopath/src/github.com/google/syzkaller/bin/linux_amd64/syz-execprog" "root@10.128.15.219:./syz-execprog"]
Warning: Permanently added '10.128.15.219' (ECDSA) to the list of known hosts.

run #3: 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/gopath/src/github.com/google/syzkaller/bin/linux_amd64/syz-execprog" "root@10.128.1.15:./syz-execprog"]
Warning: Permanently added '10.128.1.15' (ECDSA) to the list of known hosts.

run #4: 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/gopath/src/github.com/google/syzkaller/bin/linux_amd64/syz-execprog" "root@10.128.15.218:./syz-execprog"]
Warning: Permanently added '10.128.15.218' (ECDSA) to the list of known hosts.

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" "/syzkaller/jobs/linux/gopath/src/github.com/google/syzkaller/bin/linux_amd64/syz-execprog" "root@10.128.1.6:./syz-execprog"]
Warning: Permanently added '10.128.1.6' (ECDSA) to the list of known hosts.

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" "/syzkaller/jobs/linux/gopath/src/github.com/google/syzkaller/bin/linux_amd64/syz-execprog" "root@10.128.1.31:./syz-execprog"]
Warning: Permanently added '10.128.1.31' (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" "/syzkaller/jobs/linux/gopath/src/github.com/google/syzkaller/bin/linux_amd64/syz-execprog" "root@10.128.15.211:./syz-execprog"]
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" "/syzkaller/jobs/linux/gopath/src/github.com/google/syzkaller/bin/linux_amd64/syz-execprog" "root@10.128.15.212:./syz-execprog"]
Warning: Permanently added '10.128.15.212' (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" "/syzkaller/jobs/linux/gopath/src/github.com/google/syzkaller/bin/linux_amd64/syz-execprog" "root@10.128.1.56:./syz-execprog"]
Warning: Permanently added '10.128.1.56' (ECDSA) to the list of known hosts.

# git bisect skip da4c3c735ea4dcc2a0b0ff0bd4803c336361b6f5
Bisecting: 6353 revisions left to test after this (roughly 13 steps)
[fe556cd86774388a82bc1ab1e2e3818ca87dd4d4] MIPS: lantiq: remove old USB PHY initialisation
testing commit fe556cd86774388a82bc1ab1e2e3818ca87dd4d4 with gcc (GCC) 8.1.0
kernel signature: 7a060f3ce2a08bd32ba466a78e7e512b08a3b588c228764500b03e8d84281d5c
all runs: OK
# git bisect good fe556cd86774388a82bc1ab1e2e3818ca87dd4d4
Bisecting: 6212 revisions left to test after this (roughly 13 steps)
[a1f2a82072ea298ae91505c213f6d299ddb5e446] watchdog: da9063_wdt: Simplify by removing unneeded struct...
testing commit a1f2a82072ea298ae91505c213f6d299ddb5e446 with gcc (GCC) 8.1.0
kernel signature: 59b29e916667e0185acf2ee07c29fde81b91c2e68b1a4b1372763f92f52fdc31
run #0: 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/gopath/src/github.com/google/syzkaller/bin/linux_amd64/syz-execprog" "root@10.128.15.195:./syz-execprog"]
Warning: Permanently added '10.128.15.195' (ECDSA) to the list of known hosts.

run #1: 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/gopath/src/github.com/google/syzkaller/bin/linux_amd64/syz-execprog" "root@10.128.15.196:./syz-execprog"]
Warning: Permanently added '10.128.15.196' (ECDSA) to the list of known hosts.

run #2: 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/gopath/src/github.com/google/syzkaller/bin/linux_amd64/syz-execprog" "root@10.128.15.197:./syz-execprog"]
Warning: Permanently added '10.128.15.197' (ECDSA) to the list of known hosts.

run #3: 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/gopath/src/github.com/google/syzkaller/bin/linux_amd64/syz-execprog" "root@10.128.15.193:./syz-execprog"]
Warning: Permanently added '10.128.15.193' (ECDSA) to the list of known hosts.

run #4: 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/gopath/src/github.com/google/syzkaller/bin/linux_amd64/syz-execprog" "root@10.128.15.201:./syz-execprog"]
Warning: Permanently added '10.128.15.201' (ECDSA) to the list of known hosts.

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" "/syzkaller/jobs/linux/gopath/src/github.com/google/syzkaller/bin/linux_amd64/syz-execprog" "root@10.128.0.188:./syz-execprog"]
Warning: Permanently added '10.128.0.188' (ECDSA) to the list of known hosts.

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" "/syzkaller/jobs/linux/gopath/src/github.com/google/syzkaller/bin/linux_amd64/syz-execprog" "root@10.128.0.8:./syz-execprog"]
Warning: Permanently added '10.128.0.8' (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" "/syzkaller/jobs/linux/gopath/src/github.com/google/syzkaller/bin/linux_amd64/syz-execprog" "root@10.128.15.204:./syz-execprog"]
Warning: Permanently added '10.128.15.204' (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" "/syzkaller/jobs/linux/gopath/src/github.com/google/syzkaller/bin/linux_amd64/syz-execprog" "root@10.128.15.206:./syz-execprog"]
Warning: Permanently added '10.128.15.206' (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" "/syzkaller/jobs/linux/gopath/src/github.com/google/syzkaller/bin/linux_amd64/syz-execprog" "root@10.128.10.63:./syz-execprog"]
Warning: Permanently added '10.128.10.63' (ECDSA) to the list of known hosts.

# git bisect skip a1f2a82072ea298ae91505c213f6d299ddb5e446
Bisecting: 6212 revisions left to test after this (roughly 13 steps)
[f2fe445986c8c53d2c324062f2e2c34263cd79a1] skd: Avoid double completions in case of a timeout
testing commit f2fe445986c8c53d2c324062f2e2c34263cd79a1 with gcc (GCC) 8.1.0
kernel signature: 83e2db0ffc7abc91c5ae277150a0ee896f1a1b6b48651c4b8280a64f477d7ac4
all runs: OK
# git bisect good f2fe445986c8c53d2c324062f2e2c34263cd79a1
Bisecting: 6100 revisions left to test after this (roughly 13 steps)
[9d4ac934829ac58c5109c49e6dfe677300e5e652] userfaultfd: provide pid in userfault msg
testing commit 9d4ac934829ac58c5109c49e6dfe677300e5e652 with gcc (GCC) 8.1.0
kernel signature: 9e645b625646941b4c3a57d003ad1440e321235b4ae04158be352dd9e915f590
run #0: crashed: INFO: task hung in synchronize_rcu
run #1: crashed: INFO: task hung in synchronize_rcu
run #2: crashed: INFO: task hung in synchronize_rcu
run #3: crashed: INFO: task hung in synchronize_rcu
run #4: crashed: INFO: task hung in synchronize_rcu
run #5: crashed: INFO: task hung in synchronize_rcu
run #6: crashed: INFO: task hung in synchronize_rcu
run #7: crashed: INFO: task hung in synchronize_rcu
run #8: crashed: INFO: task hung in synchronize_rcu
run #9: OK
# git bisect bad 9d4ac934829ac58c5109c49e6dfe677300e5e652
Bisecting: 2203 revisions left to test after this (roughly 11 steps)
[dd90cccffc20a15d8e4c3ac8813f4b6a6cd4766f] Merge branch 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
testing commit dd90cccffc20a15d8e4c3ac8813f4b6a6cd4766f with gcc (GCC) 8.1.0
kernel signature: f70b2bca4fb0871e0a1655226d757a4ca35c8c023561bb00dc1e32db6c8cd51f
all runs: OK
# git bisect good dd90cccffc20a15d8e4c3ac8813f4b6a6cd4766f
Bisecting: 956 revisions left to test after this (roughly 10 steps)
[bf1d6b2c76eda86159519bf5c427b1fa8f51f733] Merge tag 'staging-4.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging
testing commit bf1d6b2c76eda86159519bf5c427b1fa8f51f733 with gcc (GCC) 8.1.0
kernel signature: e8740aa3085a1ca27a220ecc59ba620fc218ed24ba8aebc2bf149da688fad2fb
all runs: OK
# git bisect good bf1d6b2c76eda86159519bf5c427b1fa8f51f733
Bisecting: 543 revisions left to test after this (roughly 9 steps)
[fe9e31383e9a271a9b404488704e00acd1747ee3] Merge tag 'regulator-v4.14' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator
testing commit fe9e31383e9a271a9b404488704e00acd1747ee3 with gcc (GCC) 8.1.0
kernel signature: fce3fb128b5f2c8ffa8fb69bdcc4f53e84a490b96ecf0247188f22dadb89aa74
run #0: crashed: INFO: task hung in synchronize_rcu
run #1: crashed: INFO: task hung in synchronize_rcu
run #2: crashed: INFO: task hung in synchronize_rcu
run #3: crashed: INFO: task hung in synchronize_rcu
run #4: crashed: INFO: task hung in synchronize_rcu
run #5: crashed: INFO: task hung in synchronize_rcu
run #6: OK
run #7: OK
run #8: OK
run #9: OK
# git bisect bad fe9e31383e9a271a9b404488704e00acd1747ee3
Bisecting: 205 revisions left to test after this (roughly 8 steps)
[9f57ed095ff82eb4463c2913b22966a8c7d06bc6] Merge tag 'extcon-next-for-4.14' of git://git.kernel.org/pub/scm/linux/kernel/git/chanwoo/extcon into char-misc-next
testing commit 9f57ed095ff82eb4463c2913b22966a8c7d06bc6 with gcc (GCC) 8.1.0
kernel signature: f901f6c53db2e13cc4a42748d2ac4e335e5be841a713dcb35be4a8c35b73583d
all runs: OK
# git bisect good 9f57ed095ff82eb4463c2913b22966a8c7d06bc6
Bisecting: 111 revisions left to test after this (roughly 7 steps)
[16a832a21f4e2c8b089935429efa646b626b9e82] Merge tag 'edac_for_4.14' of git://git.kernel.org/pub/scm/linux/kernel/git/bp/bp
testing commit 16a832a21f4e2c8b089935429efa646b626b9e82 with gcc (GCC) 8.1.0
kernel signature: 45acdf23a36fb4111a63b1e28c44aac876ee60edcbcaae077ebde65d1d61ffc4
run #0: crashed: INFO: task hung in synchronize_rcu
run #1: crashed: INFO: task hung in synchronize_rcu
run #2: crashed: INFO: task hung in synchronize_rcu
run #3: crashed: INFO: task hung in synchronize_rcu
run #4: crashed: INFO: task hung in synchronize_rcu
run #5: crashed: INFO: task hung in synchronize_rcu
run #6: crashed: INFO: task hung in synchronize_rcu
run #7: crashed: INFO: task hung in synchronize_rcu
run #8: OK
run #9: OK
# git bisect bad 16a832a21f4e2c8b089935429efa646b626b9e82
Bisecting: 47 revisions left to test after this (roughly 6 steps)
[3a6430ce462172caac7c73f4afd550ab0f105737] ANDROID: binder: don't queue async transactions to thread.
revisions tested: 32, total time: 8h8m41.485027766s (build: 2h56m56.015594809s, test: 5h7m48.197240807s)
error: bisection is taking too long (>8h0m0s), aborting