bisecting cause commit starting from 98477740630f270aecf648f1d6a9dbc6027d4ff1
building syzkaller on 3e8f6c27551f163a2fd2661e4b3cac126a5e7ef2
testing commit 98477740630f270aecf648f1d6a9dbc6027d4ff1 with gcc (GCC) 8.1.0
kernel signature: 8204ac4e18977f4f0a0e8187dc7b070a1b09b56ed9878dc4efee817e3064701a
all runs: crashed: BUG: unable to handle kernel NULL pointer dereference in cdev_del
testing release v5.8
testing commit bcf876870b95592b52519ed4aafcf9d95999bc9c with gcc (GCC) 8.1.0
kernel signature: 62c19ca12315150e637f7bd3b7d7a9980a402d16ec92b5cf8333306280c8a310
all runs: crashed: BUG: unable to handle kernel NULL pointer dereference in cdev_del
testing release v5.7
testing commit 3d77e6a8804abcc0504c904bd6e5cdf3a5cf8162 with gcc (GCC) 8.1.0
kernel signature: 1a753acd092434e140feea5704b2ef72d4a92d5ecd0bcf460db6a0feb66c97a2
all runs: crashed: general protection fault in cdev_del
testing release v5.6
testing commit 7111951b8d4973bda27ff663f2cf18b663d15b48 with gcc (GCC) 8.1.0
kernel signature: 75c69624ff260bb62c3118486a33bf11d18256b46d0b627ed9f9834b00aa368f
all runs: crashed: general protection fault in cdev_del
testing release v5.5
testing commit d5226fa6dbae0569ee43ecfc08bdcd6770fc4755 with gcc (GCC) 8.1.0
kernel signature: 5d4f091a2421c9bf24fe002b4338fae41bd5fcc7f5722fb82e9628c02168fe89
all runs: crashed: general protection fault in cdev_del
testing release v5.4
testing commit 219d54332a09e8d8741c1e1982f5eae56099de85 with gcc (GCC) 8.1.0
kernel signature: 8f00f49268a8b730114200a799cd67f90d8265bf650b62c9737d689c06cb891a
all runs: crashed: general protection fault in cdev_del
testing release v5.3
testing commit 4d856f72c10ecb060868ed10ff1b1453943fc6c8 with gcc (GCC) 8.1.0
kernel signature: 4ba85103aa0b29b37bdd8037409b33c3b3ac2888fd954c0609390e1ec7ee9b46
all runs: crashed: general protection fault in cdev_del
testing release v5.2
testing commit 0ecfebd2b52404ae0c54a878c872bb93363ada36 with gcc (GCC) 8.1.0
kernel signature: 049c6c61c3243b642843aaf31f015846bc2fac4a38683a286ba9b501d0e99b61
run #0: basic kernel testing failed: UBSAN: undefined-behaviour in vhost_vq_reset
run #1: basic kernel testing failed: UBSAN: undefined-behaviour in vhost_vq_reset
run #2: basic kernel testing failed: UBSAN: undefined-behaviour in vhost_vq_reset
run #3: basic kernel testing failed: UBSAN: undefined-behaviour in vhost_vq_reset
run #4: basic kernel testing failed: UBSAN: undefined-behaviour in vhost_vq_reset
run #5: basic kernel testing failed: UBSAN: undefined-behaviour in vhost_vq_reset
run #6: basic kernel testing failed: UBSAN: undefined-behaviour in vhost_vq_reset
run #7: basic kernel testing failed: UBSAN: undefined-behaviour in vhost_vq_reset
run #8: basic kernel testing failed: UBSAN: undefined-behaviour in vhost_vq_reset
run #9: crashed: general protection fault in cdev_del
testing release v5.1
testing commit e93c9c99a629c61837d5a7fc2120cd2b6c70dbdd with gcc (GCC) 8.1.0
kernel signature: 52fd9bd9331e31209aa3e6ce5eed026fd894b3438709b1e96dec07acde97befd
all runs: basic kernel testing failed: UBSAN: undefined-behaviour in vhost_vq_reset
testing release v5.0
testing commit 1c163f4c7b3f621efff9b28a47abb36f7378d783 with gcc (GCC) 8.1.0
kernel signature: ef79a512e3e469ce26763fb04bbbd93877829b647716b5b2469e0c636433c2d9
all runs: basic kernel testing failed: UBSAN: undefined-behaviour in vhost_vq_reset
testing release v4.20
testing commit 8fe28cb58bcb235034b64cbbb7550a8a43fd88be with gcc (GCC) 8.1.0
kernel signature: f107e38a9409084d0f634d0e47715b990a89749003ca1505976bf6180772f832
all runs: basic kernel testing failed: UBSAN: undefined-behaviour in vhost_vq_reset
testing release v4.19
testing commit 84df9525b0c27f3ebc2ebb1864fa62a97fdedb7d with gcc (GCC) 8.1.0
kernel signature: fb33e05fe5e7e41a8a54c8683acc41572ecc707955e00378a8605b51a5dd7bfd
all runs: basic kernel testing failed: UBSAN: undefined-behaviour in vhost_vq_reset
testing release v4.18
testing commit 94710cac0ef4ee177a63b5227664b38c95bbf703 with gcc (GCC) 8.1.0
kernel signature: bccf36984e43476ca7caa4eafd3455a31978b5e69703119daca9f834ce89c61c
all runs: basic kernel testing failed: UBSAN: undefined-behaviour in vhost_vq_reset
testing release v4.17
testing commit 29dcea88779c856c7dc92040a0c01233263101d4 with gcc (GCC) 8.1.0
kernel signature: d52244409c06000346eb2e0bf299908f61dbf082da77f879d1b3eed4be79449c
all runs: basic kernel testing failed: UBSAN: undefined-behaviour in vhost_vq_reset
testing release v4.16
testing commit 0adb32858b0bddf4ada5f364a84ed60b196dbcda with gcc (GCC) 8.1.0
kernel signature: c707c7d9918db383d4dbfaa26e9d514256cd44c23b647ec8fd333cd0e1b700ff
all runs: basic kernel testing failed: UBSAN: undefined-behaviour in vhost_vq_reset
testing release v4.15
testing commit d8a5b80568a9cb66810e75b182018e9edb68e8ff with gcc (GCC) 8.1.0
./arch/x86/include/asm/bootparam_utils.h:37: undefined reference to `__ubsan_handle_type_mismatch_v1'
./arch/x86/include/asm/bootparam_utils.h:39: undefined reference to `__ubsan_handle_type_mismatch_v1'
./arch/x86/include/asm/bootparam_utils.h:42: undefined reference to `__ubsan_handle_type_mismatch_v1'
./arch/x86/include/asm/bootparam_utils.h:45: undefined reference to `__ubsan_handle_type_mismatch_v1'
./arch/x86/include/asm/bootparam_utils.h:48: undefined reference to `__ubsan_handle_type_mismatch_v1'
testing release v4.14
testing commit bebc6082da0a9f5d47a1ea2edc099bf671058bd4 with gcc (GCC) 8.1.0
./arch/x86/include/asm/bootparam_utils.h:37: undefined reference to `__ubsan_handle_type_mismatch_v1'
./arch/x86/include/asm/bootparam_utils.h:39: undefined reference to `__ubsan_handle_type_mismatch_v1'
./arch/x86/include/asm/bootparam_utils.h:42: undefined reference to `__ubsan_handle_type_mismatch_v1'
./arch/x86/include/asm/bootparam_utils.h:45: undefined reference to `__ubsan_handle_type_mismatch_v1'
./arch/x86/include/asm/bootparam_utils.h:48: undefined reference to `__ubsan_handle_type_mismatch_v1'
testing release v4.13
testing commit 569dbb88e80deb68974ef6fdd6a13edb9d686261 with gcc (GCC) 8.1.0
./arch/x86/include/asm/bootparam_utils.h:36: undefined reference to `__ubsan_handle_type_mismatch_v1'
./arch/x86/include/asm/bootparam_utils.h:38: undefined reference to `__ubsan_handle_type_mismatch_v1'
./arch/x86/include/asm/bootparam_utils.h:41: undefined reference to `__ubsan_handle_type_mismatch_v1'
./arch/x86/include/asm/bootparam_utils.h:44: undefined reference to `__ubsan_handle_type_mismatch_v1'
./arch/x86/include/asm/bootparam_utils.h:47: undefined reference to `__ubsan_handle_type_mismatch_v1'
testing release v4.12
testing commit 6f7da290413ba713f0cdd9ff1a2a9bb129ef4f6c with gcc (GCC) 8.1.0
arch/x86/entry/common.c:173: undefined reference to `__ubsan_handle_type_mismatch_v1'
./include/linux/compiler.h:254: undefined reference to `__ubsan_handle_type_mismatch_v1'
./include/linux/tracehook.h:190: undefined reference to `__ubsan_handle_type_mismatch_v1'
./include/linux/thread_info.h:60: undefined reference to `__ubsan_handle_type_mismatch_v1'
./include/trace/events/syscalls.h:17: undefined reference to `__ubsan_handle_type_mismatch_v1'
testing release v4.11
testing commit a351e9b9fc24e982ec2f0e76379a49826036da12 with gcc (GCC) 7.3.0
kernel signature: 97c4ecde9fe26d3633e8833e8322eded6a4b6ecd714d0dd6eef09c35393332e4
run #0: basic kernel testing failed: UBSAN: undefined-behaviour in vhost_init_is_le
run #1: basic kernel testing failed: UBSAN: undefined-behaviour in vhost_init_is_le
run #2: basic kernel testing failed: UBSAN: undefined-behaviour in vhost_init_is_le
run #3: basic kernel testing failed: UBSAN: undefined-behaviour in vhost_init_is_le
run #4: basic kernel testing failed: UBSAN: undefined-behaviour in vhost_init_is_le
run #5: basic kernel testing failed: UBSAN: undefined-behaviour in vhost_init_is_le
run #6: basic kernel testing failed: UBSAN: undefined-behaviour in vhost_init_is_le
run #7: basic kernel testing failed: UBSAN: undefined-behaviour in vhost_init_is_le
run #8: basic kernel testing failed: UBSAN: undefined-behaviour in vhost_init_is_le
run #9: 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: a75bf865d58c5b964682c7823616f57a25feda54b31ddcf2b75c44bab75e4654
run #0: basic kernel testing failed: UBSAN: undefined-behaviour in vhost_init_is_le
run #1: basic kernel testing failed: UBSAN: undefined-behaviour in vhost_init_is_le
run #2: basic kernel testing failed: UBSAN: undefined-behaviour in vhost_init_is_le
run #3: basic kernel testing failed: UBSAN: undefined-behaviour in vhost_init_is_le
run #4: basic kernel testing failed: UBSAN: undefined-behaviour in vhost_init_is_le
run #5: basic kernel testing failed: UBSAN: undefined-behaviour in vhost_init_is_le
run #6: basic kernel testing failed: UBSAN: undefined-behaviour in vhost_init_is_le
run #7: basic kernel testing failed: UBSAN: undefined-behaviour in vhost_init_is_le
run #8: basic kernel testing failed: UBSAN: undefined-behaviour in vhost_init_is_le
run #9: OK
testing release v4.9
testing commit 69973b830859bc6529a7a0468ba0d80ee5117826 with gcc (GCC) 5.5.0
kernel signature: 403b861b62728e682cbe4e84434ac2a1c4f76e9642790b4049fcc338b9ded311
all runs: OK
# git bisect start a351e9b9fc24e982ec2f0e76379a49826036da12 69973b830859bc6529a7a0468ba0d80ee5117826
Bisecting: 14068 revisions left to test after this (roughly 14 steps)
[55aac6ef53e114c28170ee3f79065cfa8ca9cf3f] Merge git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending
testing commit 55aac6ef53e114c28170ee3f79065cfa8ca9cf3f with gcc (GCC) 5.5.0
kernel signature: fb33297ebbf28a814bf53d4cfd1ff491aa114a7ac17b9d5f054848c278697ecb
run #0: basic kernel testing failed: UBSAN: undefined-behaviour in vhost_init_is_le
run #1: basic kernel testing failed: UBSAN: undefined-behaviour in vhost_init_is_le
run #2: basic kernel testing failed: UBSAN: undefined-behaviour in vhost_init_is_le
run #3: basic kernel testing failed: UBSAN: undefined-behaviour in vhost_init_is_le
run #4: basic kernel testing failed: UBSAN: undefined-behaviour in vhost_init_is_le
run #5: basic kernel testing failed: UBSAN: undefined-behaviour in vhost_init_is_le
run #6: basic kernel testing failed: UBSAN: undefined-behaviour in vhost_init_is_le
run #7: basic kernel testing failed: UBSAN: undefined-behaviour in vhost_init_is_le
run #8: basic kernel testing failed: UBSAN: undefined-behaviour in vhost_init_is_le
run #9: OK
# git bisect skip 55aac6ef53e114c28170ee3f79065cfa8ca9cf3f
Bisecting: 14068 revisions left to test after this (roughly 14 steps)
[15883a43af0bcd10b3f3173bca4a0e60518bc154] net: sun: cassini: use new api ethtool_{get|set}_link_ksettings
testing commit 15883a43af0bcd10b3f3173bca4a0e60518bc154 with gcc (GCC) 5.5.0
kernel signature: 8bdf6d489ef182fb2aad56e8f15a07619ddacff95137949c2b81d267499e7513
all runs: boot failed: UBSAN: undefined-behaviour in acpi_ds_create_operand
# git bisect skip 15883a43af0bcd10b3f3173bca4a0e60518bc154
Bisecting: 14068 revisions left to test after this (roughly 14 steps)
[1a287cfea17c3c14c03151fa970baf86b9055c26] btrfs: remove unused parameters from btrfs_cmp_data
testing commit 1a287cfea17c3c14c03151fa970baf86b9055c26 with gcc (GCC) 5.5.0
kernel signature: 3b45ad99fd69ea7f62f62ee9a186fcb59289e69573b9682a647c761fa559a87e
run #0: basic kernel testing failed: UBSAN: undefined-behaviour in vhost_init_is_le
run #1: basic kernel testing failed: UBSAN: undefined-behaviour in vhost_init_is_le
run #2: basic kernel testing failed: UBSAN: undefined-behaviour in vhost_init_is_le
run #3: basic kernel testing failed: UBSAN: undefined-behaviour in vhost_init_is_le
run #4: basic kernel testing failed: UBSAN: undefined-behaviour in vhost_init_is_le
run #5: basic kernel testing failed: UBSAN: undefined-behaviour in vhost_init_is_le
run #6: basic kernel testing failed: UBSAN: undefined-behaviour in vhost_init_is_le
run #7: basic kernel testing failed: UBSAN: undefined-behaviour in vhost_init_is_le
run #8: crashed: WARNING in nf_unregister_net_hook
run #9: OK
# git bisect bad 1a287cfea17c3c14c03151fa970baf86b9055c26
Bisecting: 7122 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: 43da69a4df22823d0ed94570af3354ae6d714c5845d940b5772c1d4b76533ea8
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-executor" "root@10.128.0.96:./syz-executor"]
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-fuzzer" "root@10.128.0.25:./syz-fuzzer"]: exit status 1
Connection timed out during banner exchange
lost connection

run #2: boot failed: UBSAN: undefined-behaviour in acpi_ds_create_operand
run #3: boot failed: UBSAN: undefined-behaviour in acpi_ds_create_operand
run #4: boot failed: UBSAN: undefined-behaviour in acpi_ds_create_operand
run #5: boot failed: UBSAN: undefined-behaviour in acpi_ds_create_operand
run #6: boot failed: UBSAN: undefined-behaviour in acpi_ds_create_operand
run #7: boot failed: UBSAN: undefined-behaviour in acpi_ds_create_operand
run #8: boot failed: UBSAN: undefined-behaviour in acpi_ds_create_operand
run #9: boot failed: UBSAN: undefined-behaviour in acpi_ds_create_operand
# git bisect skip f4000cd99750065d5177555c0a805c97174d1b9f
Bisecting: 7122 revisions left to test after this (roughly 13 steps)
[db4d22c07e3e652eeec82abcc1399e6305edd838] mailbox: mailbox-test: allow reserved areas in SRAM
testing commit db4d22c07e3e652eeec82abcc1399e6305edd838 with gcc (GCC) 5.5.0
kernel signature: 428f05f1a3ee0cf2c985ccf4da4a1276de87dad50ae3989c1b6beca5c6020718
all runs: OK
# git bisect good db4d22c07e3e652eeec82abcc1399e6305edd838
Bisecting: 7107 revisions left to test after this (roughly 13 steps)
[39a10ac23cfdb6469550e1641a2bc2ed80663ceb] proc: kmalloc struct pde_opener
testing commit 39a10ac23cfdb6469550e1641a2bc2ed80663ceb with gcc (GCC) 5.5.0
kernel signature: 3d75b7d79bab8c319f913b3b25e32919b5a6f7b015f73d56a9f1707ce31657a3
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-fuzzer" "root@10.128.0.81:./syz-fuzzer"]: exit status 1
Connection timed out during banner exchange
lost connection

run #1: boot failed: UBSAN: undefined-behaviour in acpi_ds_create_operand
run #2: boot failed: UBSAN: undefined-behaviour in acpi_ds_create_operand
run #3: boot failed: UBSAN: undefined-behaviour in acpi_ds_create_operand
run #4: boot failed: UBSAN: undefined-behaviour in acpi_ds_create_operand
run #5: boot failed: UBSAN: undefined-behaviour in acpi_ds_create_operand
run #6: boot failed: UBSAN: undefined-behaviour in acpi_ds_create_operand
run #7: boot failed: UBSAN: undefined-behaviour in acpi_ds_create_operand
run #8: boot failed: UBSAN: undefined-behaviour in acpi_ds_create_operand
run #9: boot failed: UBSAN: undefined-behaviour in acpi_ds_create_operand
# git bisect skip 39a10ac23cfdb6469550e1641a2bc2ed80663ceb
Bisecting: 7107 revisions left to test after this (roughly 13 steps)
[7ac51a12ea11058e34ba6542671ed6c6aa00d7f7] usb: dwc3: Add a function to check properties
testing commit 7ac51a12ea11058e34ba6542671ed6c6aa00d7f7 with gcc (GCC) 5.5.0
kernel signature: 107b13a219b6ca28ca7861e69d1b18255ae70a4c3565c006f854f372ad89c1c6
all runs: OK
# git bisect good 7ac51a12ea11058e34ba6542671ed6c6aa00d7f7
Bisecting: 7083 revisions left to test after this (roughly 13 steps)
[0b7589ecca2b6f962cf3314a3a5a675deeefb624] s390/pci: query fmb length
testing commit 0b7589ecca2b6f962cf3314a3a5a675deeefb624 with gcc (GCC) 5.5.0
kernel signature: fe377762b29826ce431c6e0456b15204bd56a30b6c6a41f56b58649b25e30225
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-fuzzer" "root@10.128.15.196:./syz-fuzzer"]: exit status 1
Connection timed out during banner exchange
lost connection

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-fuzzer" "root@10.128.1.58:./syz-fuzzer"]
Warning: Permanently added '10.128.1.58' (ECDSA) to the list of known hosts.

run #2: boot failed: UBSAN: undefined-behaviour in acpi_ds_create_operand
run #3: boot failed: UBSAN: undefined-behaviour in acpi_ds_create_operand
run #4: boot failed: UBSAN: undefined-behaviour in acpi_ds_create_operand
run #5: boot failed: UBSAN: undefined-behaviour in acpi_ds_create_operand
run #6: boot failed: UBSAN: undefined-behaviour in acpi_ds_create_operand
run #7: boot failed: UBSAN: undefined-behaviour in acpi_ds_create_operand
run #8: boot failed: UBSAN: undefined-behaviour in acpi_ds_create_operand
run #9: boot failed: UBSAN: undefined-behaviour in acpi_ds_create_operand
# git bisect skip 0b7589ecca2b6f962cf3314a3a5a675deeefb624
Bisecting: 7083 revisions left to test after this (roughly 13 steps)
[85f5bd9e771349833602ccdd39b65613ecd11fd1] arm64: dts: hisi: add refclk node to hip06 dts files for SAS
testing commit 85f5bd9e771349833602ccdd39b65613ecd11fd1 with gcc (GCC) 5.5.0
kernel signature: 19f1bb0f4bedec02b8f6e2b4c6fe1fe950e64dfcf0b0a042b502ababc07f59e7
all runs: OK
# git bisect good 85f5bd9e771349833602ccdd39b65613ecd11fd1
Bisecting: 7076 revisions left to test after this (roughly 13 steps)
[020eb3daaba2857b32c4cf4c82f503d6a00a67de] x86/ioapic: Restore IO-APIC irq_chip retrigger callback
testing commit 020eb3daaba2857b32c4cf4c82f503d6a00a67de with gcc (GCC) 5.5.0
kernel signature: 49f6dcbb619040773a5cdae701335e3d33da8455c4e41721f2070c4fe0606228
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 020eb3daaba2857b32c4cf4c82f503d6a00a67de
Bisecting: 6469 revisions left to test after this (roughly 13 steps)
[72cca7baf4fba777b8ab770b902cf2e08941773f] Merge tag 'staging-4.10-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging
testing commit 72cca7baf4fba777b8ab770b902cf2e08941773f with gcc (GCC) 5.5.0
kernel signature: 1b77fd102899a9d1bc67f0e9a3ba711704411e9575c18fca65d8d6bb02520a32
all runs: boot failed: UBSAN: undefined-behaviour in acpi_ds_create_operand
# git bisect skip 72cca7baf4fba777b8ab770b902cf2e08941773f
Bisecting: 6469 revisions left to test after this (roughly 13 steps)
[aa059b30935e812efc7b2e4bfec1d8552d133eed] staging: ks7010: Replace __attribute__(aligned(x)) with __aligned(x)
testing commit aa059b30935e812efc7b2e4bfec1d8552d133eed with gcc (GCC) 5.5.0
kernel signature: 86eec99cc97fc6a5e0b7fc30ae88e0130ec1dc1e9cd98c216aeb10a1c2f88bdb
all runs: OK
# git bisect good aa059b30935e812efc7b2e4bfec1d8552d133eed
Bisecting: 6323 revisions left to test after this (roughly 13 steps)
[e6efef7260ac2bb170059980a78440499f2cc0db] Merge branch 'for-4.10' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu
testing commit e6efef7260ac2bb170059980a78440499f2cc0db with gcc (GCC) 5.5.0
kernel signature: 52978691e6e0b43b8b66aa33646582e48e7bbedef4176ef9ea03ab41bed28cff
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-fuzzer" "root@10.128.0.222:./syz-fuzzer"]: exit status 1
Connection timed out during banner exchange
lost connection

run #1: basic kernel testing failed: no output from test machine
run #2: boot failed: UBSAN: undefined-behaviour in acpi_ds_create_operand
run #3: boot failed: UBSAN: undefined-behaviour in acpi_ds_create_operand
run #4: boot failed: UBSAN: undefined-behaviour in acpi_ds_create_operand
run #5: boot failed: UBSAN: undefined-behaviour in acpi_ds_create_operand
run #6: boot failed: UBSAN: undefined-behaviour in acpi_ds_create_operand
run #7: boot failed: UBSAN: undefined-behaviour in acpi_ds_create_operand
run #8: boot failed: UBSAN: undefined-behaviour in acpi_ds_create_operand
run #9: boot failed: UBSAN: undefined-behaviour in acpi_ds_create_operand
# git bisect skip e6efef7260ac2bb170059980a78440499f2cc0db
Bisecting: 6323 revisions left to test after this (roughly 13 steps)
[9ac63d99732ad221ad2606e7910ed4bec4763d84] Merge branch 'linux-4.10' of git://github.com/skeggsb/linux into drm-next
testing commit 9ac63d99732ad221ad2606e7910ed4bec4763d84 with gcc (GCC) 5.5.0
kernel signature: ccb8240a638292cb9a43b8f05ae5d0d6728032a6350443fbea35a4d3361565da
all runs: OK
# git bisect good 9ac63d99732ad221ad2606e7910ed4bec4763d84
Bisecting: 5721 revisions left to test after this (roughly 13 steps)
[5084fdf081739b7455c7aeecda6d7b83ec59c85f] Merge tag 'ext4_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4
testing commit 5084fdf081739b7455c7aeecda6d7b83ec59c85f with gcc (GCC) 5.5.0
kernel signature: f976530ea7ff434f5b49d5c9ef4d4075212fb6e21968c9a9c79f4d81a0e46c54
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-fuzzer" "root@10.128.0.25:./syz-fuzzer"]: exit status 1
Connection timed out during banner exchange
lost connection

run #1: boot failed: UBSAN: undefined-behaviour in acpi_ds_create_operand
run #2: boot failed: UBSAN: undefined-behaviour in acpi_ds_create_operand
run #3: boot failed: UBSAN: undefined-behaviour in acpi_ds_create_operand
run #4: boot failed: UBSAN: undefined-behaviour in acpi_ds_create_operand
run #5: boot failed: UBSAN: undefined-behaviour in acpi_ds_create_operand
run #6: boot failed: UBSAN: undefined-behaviour in acpi_ds_create_operand
run #7: boot failed: UBSAN: undefined-behaviour in acpi_ds_create_operand
run #8: boot failed: UBSAN: undefined-behaviour in acpi_ds_create_operand
run #9: boot failed: UBSAN: undefined-behaviour in acpi_ds_create_operand
# git bisect skip 5084fdf081739b7455c7aeecda6d7b83ec59c85f
Bisecting: 5721 revisions left to test after this (roughly 13 steps)
[a9fa1f7c18e22223026f151f563f9770d6923a75] Merge tag 'omap-for-v4.10/soc-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into next/soc
testing commit a9fa1f7c18e22223026f151f563f9770d6923a75 with gcc (GCC) 5.5.0
kernel signature: e4ee90bed4a98b0a52dcc89efd297ad69164ad02997521a997c5c70a48a174c5
all runs: OK
# git bisect good a9fa1f7c18e22223026f151f563f9770d6923a75
Bisecting: 5653 revisions left to test after this (roughly 13 steps)
[ccee1a4cdcd02e748d39d2b121f7f82041893121] i2c: octeon: thunderx: TWSI software reset in recovery
testing commit ccee1a4cdcd02e748d39d2b121f7f82041893121 with gcc (GCC) 5.5.0
kernel signature: fe2a7f6151baa61ece7be7401c6b48fde78e2b53e4f017caa4ac2dce917d8bf2
all runs: OK
# git bisect good ccee1a4cdcd02e748d39d2b121f7f82041893121
Bisecting: 5699 revisions left to test after this (roughly 13 steps)
[09cb6464fe5e7fcd5177911429badd139c4481b7] Merge tag 'for-f2fs-4.10' of git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs
testing commit 09cb6464fe5e7fcd5177911429badd139c4481b7 with gcc (GCC) 5.5.0
kernel signature: 6b518f69a3889bbc46d2c0dfae8e61fa1c288b9653c97a6e7eb63b8ab3115baf
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-fuzzer" "root@10.128.15.199:./syz-fuzzer"]: exit status 1
Connection timed out during banner exchange
lost connection

run #1: boot failed: UBSAN: undefined-behaviour in acpi_ds_create_operand
run #2: boot failed: UBSAN: undefined-behaviour in acpi_ds_create_operand
run #3: boot failed: UBSAN: undefined-behaviour in acpi_ds_create_operand
run #4: boot failed: UBSAN: undefined-behaviour in acpi_ds_create_operand
run #5: boot failed: UBSAN: undefined-behaviour in acpi_ds_create_operand
run #6: boot failed: UBSAN: undefined-behaviour in acpi_ds_create_operand
run #7: boot failed: UBSAN: undefined-behaviour in acpi_ds_create_operand
run #8: boot failed: UBSAN: undefined-behaviour in acpi_ds_create_operand
run #9: boot failed: UBSAN: undefined-behaviour in acpi_ds_create_operand
# git bisect skip 09cb6464fe5e7fcd5177911429badd139c4481b7
Bisecting: 5699 revisions left to test after this (roughly 13 steps)
[9652dc2eb9e40d100e0a3abfdcc0ea852c8be254] tcp: relax listening_hash operations
revisions tested: 40, total time: 8h16m27.748355493s (build: 3h44m15.860085074s, test: 4h26m38.033632493s)
error: bisection is taking too long (>8h0m0s), aborting