bisecting cause commit starting from d1d2220c7f39d0fca302c4ba6cca4ede01660a2b
building syzkaller on 5dd8aee810424d4c1b06252f59ae59416fcacc55
testing commit d1d2220c7f39d0fca302c4ba6cca4ede01660a2b with gcc (GCC) 8.1.0
kernel signature: a76b43d2c3682563be679bad184e53a859c3a297427cf2ad79fad447cda261af
all runs: crashed: BUG: unable to handle kernel NULL pointer dereference in io_poll_double_wake
testing release v5.8
testing commit bcf876870b95592b52519ed4aafcf9d95999bc9c with gcc (GCC) 8.1.0
kernel signature: 48794a9fb3eaba3ae2fd22a71c905c2454635f045b9ec1ebb59d66a400c6846e
all runs: crashed: possible deadlock in io_poll_double_wake
testing release v5.7
testing commit 3d77e6a8804abcc0504c904bd6e5cdf3a5cf8162 with gcc (GCC) 8.1.0
kernel signature: 4961c4446344f6ca55ae05621cb2685642f38a009d46be710692752c92d0dcd2
run #0: OK
run #1: OK
run #2: OK
run #3: OK
run #4: OK
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-executor862754718" "root@10.128.0.207:./syz-executor862754718"]: exit status 1
Connection timed out during banner exchange
lost connection

run #6: OK
run #7: crashed: INFO: task hung in io_ring_exit_work
run #8: crashed: INFO: task hung in io_ring_exit_work
run #9: crashed: INFO: task hung in io_ring_exit_work
testing release v5.6
testing commit 7111951b8d4973bda27ff663f2cf18b663d15b48 with gcc (GCC) 8.1.0
kernel signature: 5da7682bdbaa5fec0f775203eafa53ff9c4f10f51a9e2b12367226ef8c09b243
all runs: OK
# git bisect start 3d77e6a8804abcc0504c904bd6e5cdf3a5cf8162 7111951b8d4973bda27ff663f2cf18b663d15b48
Bisecting: 7542 revisions left to test after this (roughly 13 steps)
[50a5de895dbe5df947b3a695777db5b2c313e065] Merge tag 'for-linus-hmm' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma
testing commit 50a5de895dbe5df947b3a695777db5b2c313e065 with gcc (GCC) 8.1.0
kernel signature: a23c0872cf4b8465c170e925963e99859e77a67aad9ff3dadd828b1b19d556d4
all runs: boot failed: kernel panic: VFS: Unable to mount root fs on unknown-block(8,1)
# git bisect skip 50a5de895dbe5df947b3a695777db5b2c313e065
Bisecting: 7542 revisions left to test after this (roughly 13 steps)
[422c032afcf57d5e8109a54912e22ffc53d99068] netfilter: flowtable: Use rw sem as flow block lock
testing commit 422c032afcf57d5e8109a54912e22ffc53d99068 with gcc (GCC) 8.1.0
kernel signature: 42de408fb5528cd1e7f96ada53dd7a83275ab4773f355a0455501e126f2993c8
all runs: OK
# git bisect good 422c032afcf57d5e8109a54912e22ffc53d99068
Bisecting: 6728 revisions left to test after this (roughly 13 steps)
[8c1b724ddb218f221612d4c649bc9c7819d8d7a6] Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm
testing commit 8c1b724ddb218f221612d4c649bc9c7819d8d7a6 with gcc (GCC) 8.1.0
kernel signature: abcd29a3f3bdba8af26fa8c666ef65e34b60ab29d894a60e7c253a770d8a72ff
all runs: boot failed: kernel panic: VFS: Unable to mount root fs on unknown-block(8,1)
# git bisect skip 8c1b724ddb218f221612d4c649bc9c7819d8d7a6
Bisecting: 6728 revisions left to test after this (roughly 13 steps)
[88d7fcfa3b1fe670f0412b95be785aafca63352b] net: inet_csk: Fix so_reuseport bind-address cache in tb->fast*
testing commit 88d7fcfa3b1fe670f0412b95be785aafca63352b with gcc (GCC) 8.1.0
kernel signature: e7c31513e110880066b74981ec299ed1255c36ae8e4fe2d6a7e97649b6c4b898
run #0: OK
run #1: OK
run #2: OK
run #3: OK
run #4: OK
run #5: crashed: INFO: task hung in corrupted
run #6: crashed: INFO: task hung in corrupted
run #7: crashed: INFO: task hung in corrupted
run #8: crashed: INFO: task hung in corrupted
run #9: crashed: INFO: task hung in corrupted
# git bisect bad 88d7fcfa3b1fe670f0412b95be785aafca63352b
Bisecting: 6383 revisions left to test after this (roughly 13 steps)
[6cad420cc695867b4ca710bac21fde21a4102e4b] Merge branch 'akpm' (patches from Andrew)
testing commit 6cad420cc695867b4ca710bac21fde21a4102e4b with gcc (GCC) 8.1.0
kernel signature: 40637347cab1645e748ea09794fefdea2cee1e3dd1b1dedf6c30cc807f9549bf
all runs: boot failed: kernel panic: VFS: Unable to mount root fs on unknown-block(8,1)
# git bisect skip 6cad420cc695867b4ca710bac21fde21a4102e4b
Bisecting: 6383 revisions left to test after this (roughly 13 steps)
[77a36a3ab4ff17fad23831192e3694a3c5a1750d] HID: Add driver fixing Glorious PC Gaming Race mouse report descriptor
testing commit 77a36a3ab4ff17fad23831192e3694a3c5a1750d with gcc (GCC) 8.1.0
kernel signature: f57a7038a1b28fbdfae9d497fb74ac40a274f1831cacbe7f708a4853e18897e6
run #0: OK
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: boot failed: can't ssh into the instance
# git bisect good 77a36a3ab4ff17fad23831192e3694a3c5a1750d
Bisecting: 6383 revisions left to test after this (roughly 13 steps)
[8ec91c0fce1500306a858d0c35d1383fd9eb6ba6] Merge tag 'gpio-v5.7-2' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio
testing commit 8ec91c0fce1500306a858d0c35d1383fd9eb6ba6 with gcc (GCC) 8.1.0
kernel signature: 2882f19c50e4fe971309ed33095ad84162b962e745313cc666f6a51431a76ef1
run #0: OK
run #1: OK
run #2: OK
run #3: OK
run #4: OK
run #5: crashed: INFO: task hung in corrupted
run #6: crashed: INFO: task hung in corrupted
run #7: crashed: INFO: task hung in corrupted
run #8: crashed: INFO: task hung in corrupted
run #9: crashed: INFO: task hung in corrupted
# git bisect bad 8ec91c0fce1500306a858d0c35d1383fd9eb6ba6
Bisecting: 6337 revisions left to test after this (roughly 13 steps)
[7be97138e7276c71cc9ad1752dcb502d28f4400d] Merge tag 'xfs-5.7-merge-8' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux
testing commit 7be97138e7276c71cc9ad1752dcb502d28f4400d with gcc (GCC) 8.1.0
kernel signature: 43eba6eb5ad6f15bf9cc481d1430db5d6387a340c75a132ea4e63b1515578082
all runs: boot failed: kernel panic: VFS: Unable to mount root fs on unknown-block(8,1)
# git bisect skip 7be97138e7276c71cc9ad1752dcb502d28f4400d
Bisecting: 6337 revisions left to test after this (roughly 13 steps)
[f5637d3b42ab0465ef71d5fb8461bce97fba95e8] mm/memory_hotplug: rename mhp_restrictions to mhp_params
testing commit f5637d3b42ab0465ef71d5fb8461bce97fba95e8 with gcc (GCC) 8.1.0
kernel signature: 41611924fe9cf542bdc1ec63b2343d209522d4d31d3b5e8f0a76f68872fa4bb9
all runs: boot failed: kernel panic: VFS: Unable to mount root fs on unknown-block(8,1)
# git bisect skip f5637d3b42ab0465ef71d5fb8461bce97fba95e8
Bisecting: 6337 revisions left to test after this (roughly 13 steps)
[1592c4b9935fa8a3b7c297955bb872a357e5a3b6] pinctrl: sprd: Add pin high impedance mode support
testing commit 1592c4b9935fa8a3b7c297955bb872a357e5a3b6 with gcc (GCC) 8.1.0
kernel signature: 0e1e7234a14ef2b55c10496a66bb885230bc723ef0325c7624f80b08d2db170a
all runs: OK
# git bisect good 1592c4b9935fa8a3b7c297955bb872a357e5a3b6
Bisecting: 6274 revisions left to test after this (roughly 13 steps)
[763dafc520add02a1f4639b500c509acc0ea8e5b] audit: check the length of userspace generated audit records
testing commit 763dafc520add02a1f4639b500c509acc0ea8e5b with gcc (GCC) 8.1.0
kernel signature: a497a6c3ec586c17b0cec84999787e0b7b2928d54d06c4b494c2a9f891ae3be7
all runs: boot failed: kernel panic: VFS: Unable to mount root fs on unknown-block(8,1)
# git bisect skip 763dafc520add02a1f4639b500c509acc0ea8e5b
Bisecting: 6274 revisions left to test after this (roughly 13 steps)
[377f16ac67237c8cda05daf363bcbea95212b000] xfs: factor out a xfs_attr_match helper
testing commit 377f16ac67237c8cda05daf363bcbea95212b000 with gcc (GCC) 8.1.0
kernel signature: f9159b00a61ce2ca11b8b8f6a43152622059888c770ba60a3d675438a7cf047b
run #0: OK
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: boot failed: can't ssh into the instance
# git bisect good 377f16ac67237c8cda05daf363bcbea95212b000
Bisecting: 6274 revisions left to test after this (roughly 13 steps)
[a72d2401f54b7db41c77ab971238a06eafe929fb] gfs2: Allow some glocks to be used during withdraw
testing commit a72d2401f54b7db41c77ab971238a06eafe929fb with gcc (GCC) 8.1.0
kernel signature: e637b5660d7f310e7ac0a66f579da718ba57dee2bac3cf1b2e246e1b7359a91e
all runs: OK
# git bisect good a72d2401f54b7db41c77ab971238a06eafe929fb
Bisecting: 6274 revisions left to test after this (roughly 13 steps)
[5fc0df93fccd4dc8412bfc488ba4ba8268aa12dc] Merge v5.6 into drm-next
testing commit 5fc0df93fccd4dc8412bfc488ba4ba8268aa12dc with gcc (GCC) 8.1.0
kernel signature: 128f55977de06b8659b921327f83f674caecff634e4918c9442a0f3977cb687b
all runs: OK
# git bisect good 5fc0df93fccd4dc8412bfc488ba4ba8268aa12dc
Bisecting: 5319 revisions left to test after this (roughly 13 steps)
[848960e576dafc8ed54c691b2f70b92e1fdea9ba] Merge tag 'sound-5.7-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound
testing commit 848960e576dafc8ed54c691b2f70b92e1fdea9ba with gcc (GCC) 8.1.0
kernel signature: 0346e13bd658e5540fafba4d54f8c17a6a09ce87433943e08abdccd2ed7dff67
all runs: boot failed: kernel panic: VFS: Unable to mount root fs on unknown-block(8,1)
# git bisect skip 848960e576dafc8ed54c691b2f70b92e1fdea9ba
Bisecting: 5319 revisions left to test after this (roughly 13 steps)
[2f5ab6225fa2bd1435a65e9a2c5503e5b5cf4b45] Merge tag 'docs-5.6-fixes' into docs-next
testing commit 2f5ab6225fa2bd1435a65e9a2c5503e5b5cf4b45 with gcc (GCC) 8.1.0
kernel signature: ea6506ef8989ced74c7fb3cc019c74282805a52eb99249d909c5d2b3d3834cbe
all runs: OK
# git bisect good 2f5ab6225fa2bd1435a65e9a2c5503e5b5cf4b45
Bisecting: 5319 revisions left to test after this (roughly 13 steps)
[0830c0a4891f9de009dfaa585dfecefa4c67795b] Bluetooth: hci_h5: Move variable into local scope
testing commit 0830c0a4891f9de009dfaa585dfecefa4c67795b with gcc (GCC) 8.1.0
kernel signature: 67b46b008d629acfb1e903e6af8d7e4db6f946f6d27ea3f9d2ce1385726d7a98
all runs: OK
# git bisect good 0830c0a4891f9de009dfaa585dfecefa4c67795b
Bisecting: 5319 revisions left to test after this (roughly 13 steps)
[7f218319caaaf6f2a43b22d8c82b898f32b4ec70] Merge branch 'next-integrity' of git://git.kernel.org/pub/scm/linux/kernel/git/zohar/linux-integrity
testing commit 7f218319caaaf6f2a43b22d8c82b898f32b4ec70 with gcc (GCC) 8.1.0
kernel signature: 7077208cf2aeaed978cf4a64fed3df673cb2f26abf814cccdcf0076fca4cc776
all runs: boot failed: kernel panic: VFS: Unable to mount root fs on unknown-block(8,1)
# git bisect skip 7f218319caaaf6f2a43b22d8c82b898f32b4ec70
Bisecting: 5319 revisions left to test after this (roughly 13 steps)
[ec06dc15c358d3f41e9fd05872d772ed0f9fa32a] ASoC: dapm: select sleep_state when initializing PINCTRL widget
testing commit ec06dc15c358d3f41e9fd05872d772ed0f9fa32a with gcc (GCC) 8.1.0
kernel signature: fa582b2f04dc15416de8319634fa8212cb25ba75c4fae16c4141948d12db1292
run #0: OK
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: boot failed: can't ssh into the instance
# git bisect good ec06dc15c358d3f41e9fd05872d772ed0f9fa32a
Bisecting: 5319 revisions left to test after this (roughly 12 steps)
[d84edddc447df2d87e6ce9fbf94d95225504ab32] iommu/omap: Fix -Woverflow warnings when compiling on 64-bit architectures
testing commit d84edddc447df2d87e6ce9fbf94d95225504ab32 with gcc (GCC) 8.1.0
kernel signature: f0c0d21229e69cfcee83d0d9b806921a1aa74a2c35c202728cccbc35aeb381f5
all runs: OK
# git bisect good d84edddc447df2d87e6ce9fbf94d95225504ab32
Bisecting: 5316 revisions left to test after this (roughly 12 steps)
[a3434a497a2f33324e0f47bc1500a400959b4b25] ASoC: jz4740-i2s: Add support for the JZ4770
testing commit a3434a497a2f33324e0f47bc1500a400959b4b25 with gcc (GCC) 8.1.0
kernel signature: 2698551c7c979e3dbe6fb8f876b9fa9848522a101e32e9df0a1e6e2d675d181d
all runs: OK
# git bisect good a3434a497a2f33324e0f47bc1500a400959b4b25
Bisecting: 5316 revisions left to test after this (roughly 12 steps)
[0be44352071dc87a4f9bf879642b1d44876971d9] KVM: x86/mmu: Reuse the current root if possible for fast switch
testing commit 0be44352071dc87a4f9bf879642b1d44876971d9 with gcc (GCC) 8.1.0
kernel signature: f28e0e1014eeb2bdbb06d8ba4e75b5ad4e97b80363c42983e9ec30e7303e7d8a
run #0: OK
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: boot failed: can't ssh into the instance
# git bisect good 0be44352071dc87a4f9bf879642b1d44876971d9
Bisecting: 5279 revisions left to test after this (roughly 12 steps)
[5c8db3eb381745c010ba746373a279e92502bdc8] Merge branch 'i2c/for-5.7' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux
testing commit 5c8db3eb381745c010ba746373a279e92502bdc8 with gcc (GCC) 8.1.0
kernel signature: c69b369380262cfd56d08dd274896e99560925934df2eb4b03047bde3c00251f
all runs: boot failed: kernel panic: VFS: Unable to mount root fs on unknown-block(8,1)
# git bisect skip 5c8db3eb381745c010ba746373a279e92502bdc8
Bisecting: 5279 revisions left to test after this (roughly 12 steps)
[4ed59504fbfbf3f9ceb957bc3a309bfd85f6cea3] net: ethernet: ti: ale: am65: add support for default thread cfg
testing commit 4ed59504fbfbf3f9ceb957bc3a309bfd85f6cea3 with gcc (GCC) 8.1.0
kernel signature: a2309363ad263a71a4944cb2bef525e6b029573bca8f328bd410860f1ead09c9
all runs: OK
# git bisect good 4ed59504fbfbf3f9ceb957bc3a309bfd85f6cea3
Bisecting: 5081 revisions left to test after this (roughly 12 steps)
[e109f506074152b7241bcbd3949a099e776cb802] Merge tag 'mtd/for-5.7' of git://git.kernel.org/pub/scm/linux/kernel/git/mtd/linux
testing commit e109f506074152b7241bcbd3949a099e776cb802 with gcc (GCC) 8.1.0
kernel signature: c3986b8228e0e2e72a04aa4fe5a1d15dee35013ab14100ae472b37ac1d4c61e5
all runs: boot failed: kernel panic: VFS: Unable to mount root fs on unknown-block(8,1)
# git bisect skip e109f506074152b7241bcbd3949a099e776cb802
Bisecting: 5081 revisions left to test after this (roughly 12 steps)
[a5fb8b918920c6f7706a8b5b8ea535a7f077a7f6] drm/msm/a6xx: Use the DMA API for GMU memory objects
testing commit a5fb8b918920c6f7706a8b5b8ea535a7f077a7f6 with gcc (GCC) 8.1.0
kernel signature: 78bf77b75bfcf6ca4ef7986a14aa3dbc563b1b89348d5f0ffb726d165b6fa12b
all runs: OK
# git bisect good a5fb8b918920c6f7706a8b5b8ea535a7f077a7f6
Bisecting: 5081 revisions left to test after this (roughly 12 steps)
[7289fdb5dcdbc5155b5531529c44105868a762f2] KVM: Remove CREATE_IRQCHIP/SET_PIT2 race
revisions tested: 30, total time: 8h9m17.026452211s (build: 3h23m6.918145777s, test: 4h42m43.810135755s)
error: bisection is taking too long (>8h0m0s), aborting