bisecting cause commit starting from 5a5d008887b47f4d6ad98ff4b841313f892fcdee building syzkaller on 8cac236e8c3741446e540b2fe0702086a4ae4c17 testing commit 5a5d008887b47f4d6ad98ff4b841313f892fcdee compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.2 kernel signature: a95a813750ebec752649121088113e5b427ee99d0e4406e13a574feb83034c5b all runs: crashed: INFO: rcu detected stall in io_uring_enter testing release v5.14 testing commit 7d2a07b769330c34b4deabeed939325c77a7ec2f compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.2 kernel signature: 8c219514f33cf5f7e995cffb6643e798eb9f0e406da2dbcbb7423680d5a3f503 all runs: crashed: INFO: task hung in io_ring_exit_work testing release v5.13 testing commit 62fb9874f5da54fdb243003b386128037319b219 compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.2 kernel signature: f0d89eb8f9d4c9864735171e2eb3e5feeaf7d26439e5a7bae1ef45fb8f9578ab all runs: crashed: INFO: task hung in io_ring_exit_work testing release v5.12 testing commit 9f4ad9e425a1d3b6a34617b8ea226d56a119a717 compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.2 kernel signature: f3685dd148c0d7f62ec2c26b6ccd338a86cdce80e434ce6a225cc94922f0c2db all runs: crashed: INFO: task hung in io_ring_exit_work testing release v5.11 testing commit f40ddce88593482919761f74910f42f4b84c004b compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.2 kernel signature: 1f5c2551444cc5a9717d44acd7d59dea64de831f0ec6d140c76c393b1a8be7b9 all runs: crashed: no output from test machine testing release v5.10 testing commit 2c85ebc57b3e1817b6ce1a6b703928e113a90442 compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.2 kernel signature: 6fadf1b92bad0f2eefaa047034d1044e5b34f9c1872d7811646aed5049f137a7 all runs: crashed: no output from test machine testing release v5.9 testing commit bbf5c979011a099af5dc76498918ed7df445635b compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.2 kernel signature: 79f11e7a8eed3e447672927cef5561c2ba920551ad72927757519c7fec1a8d58 all runs: crashed: no output from test machine testing release v5.8 testing commit bcf876870b95592b52519ed4aafcf9d95999bc9c compiler: gcc (GCC) 8.4.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.2 kernel signature: 3a10be75bbfb45817efdf085ef0d7bb7934a9655779dbb5140e82be0f1d7e80e all runs: crashed: no output from test machine testing release v5.7 testing commit 3d77e6a8804abcc0504c904bd6e5cdf3a5cf8162 compiler: gcc version 8.4.1 20210217 (GCC), GNU ld (GNU Binutils for Debian) 2.35.2 kernel signature: 6c15458155203600f9eead46349048b82bfa958d35a9c08152de83a646393e6d all runs: crashed: no output from test machine testing release v5.6 testing commit 7111951b8d4973bda27ff663f2cf18b663d15b48 compiler: gcc version 8.4.1 20210217 (GCC) kernel signature: 3ec8f747eafa1b5378a4cc37ea09f1a8798bfd8f4ee7c3e4b1f24c42b3888ba2 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 compiler: gcc version 8.4.1 20210217 (GCC) kernel signature: a2b5f661133618c32c37d198d7557ee3c7e3e30469c446f7ba2067f52419afce all runs: boot failed: kernel panic: VFS: Unable to mount root fs on unknown-block(NUM,NUM) # 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 compiler: gcc version 8.4.1 20210217 (GCC) kernel signature: e9c9680ccef02ee0955a9f2f7caa32a0b0a3337e5081c1b0c9b5256eae1cc45a 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 compiler: gcc version 8.4.1 20210217 (GCC) kernel signature: ac3b7906667feb37145fe6868f1c6d4642b258b884ef1b21bc8678bd5bf17c66 all runs: boot failed: kernel panic: VFS: Unable to mount root fs on unknown-block(NUM,NUM) # 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 compiler: gcc version 8.4.1 20210217 (GCC), GNU ld (GNU Binutils for Debian) 2.35.2 kernel signature: 020d92d555a1685b3969ccafc122bae56394c5096b7db62724f308ce9385dff6 all runs: crashed: no output from test machine # 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 compiler: gcc version 8.4.1 20210217 (GCC) kernel signature: c5aa9785917c44299e002d3238fd7f0966a0ff191873c145c68f599efe355d6a all runs: boot failed: kernel panic: VFS: Unable to mount root fs on unknown-block(NUM,NUM) # 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 compiler: gcc version 8.4.1 20210217 (GCC) kernel signature: efc6afdf0ea968f11b7538a4bd15103094a27895a3cf8e14549cc828e1d7730a run #0: boot failed: can't ssh into the instance 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 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 compiler: gcc version 8.4.1 20210217 (GCC), GNU ld (GNU Binutils for Debian) 2.35.2 kernel signature: 051986672bb263864b8607a609c1e12d593cfd5f40b983cf676ab8bd1fe23dfb all runs: crashed: no output from test machine # 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 compiler: gcc version 8.4.1 20210217 (GCC) kernel signature: daeee3585d177cd1827d8eea37f93dcf965ce7ac2092ca67e021936372576ea2 all runs: boot failed: kernel panic: VFS: Unable to mount root fs on unknown-block(NUM,NUM) # 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 compiler: gcc version 8.4.1 20210217 (GCC) kernel signature: 44f86b666457fde89f3e10ba26e53bf413c49d1e3914e89cd63fb65d61170175 all runs: boot failed: kernel panic: VFS: Unable to mount root fs on unknown-block(NUM,NUM) # 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 compiler: gcc version 8.4.1 20210217 (GCC) kernel signature: f701136a915d3461a089df11cc6ce58a5945abf4f0adc5ea0ce5aac962386aa2 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 compiler: gcc version 8.4.1 20210217 (GCC), GNU ld (GNU Binutils for Debian) 2.35.2 kernel signature: 6773556b9105749e54cfbc54da33fa55827d37d829c15f001d0b071d82fe9732 all runs: boot failed: kernel panic: VFS: Unable to mount root fs on unknown-block(NUM,NUM) # 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 compiler: gcc version 8.4.1 20210217 (GCC) kernel signature: f167a34b9534ce7877ece9e1f8d7f50e8b3a63e44f087947d3d6256985d1bd91 all runs: OK # 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 compiler: gcc version 8.4.1 20210217 (GCC) kernel signature: 26bea2eb78a41bac58bb97c4c3cffa4d3162b443f5093222b5e55daf523a31fa 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 compiler: gcc version 8.4.1 20210217 (GCC) kernel signature: c7df85cc11148789e420b0a5b2fa23c4d4b6b11e4d08d4f1c592f6adf346bac1 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 compiler: gcc version 8.4.1 20210217 (GCC) kernel signature: 16f96c11350ac9c5d2ba29d180132bfdedb29b09587180e613e28be02f42d70e all runs: boot failed: kernel panic: VFS: Unable to mount root fs on unknown-block(NUM,NUM) # 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 compiler: gcc version 8.4.1 20210217 (GCC) kernel signature: c2bcf1dac8d00f3cfc775cdf99454e1c74d5b2b3f726d8ce71dc5ec54b43d7b0 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 compiler: gcc version 8.4.1 20210217 (GCC) kernel signature: bfeac212ec859638dc305812de0db84b6e800903ac1cfcb96d803a927b3ddefc 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 compiler: gcc version 8.4.1 20210217 (GCC) kernel signature: bbe9a35f00eba1bdebbe520fffc23133f64655d676c53b3786f52dd04108f19c all runs: boot failed: kernel panic: VFS: Unable to mount root fs on unknown-block(NUM,NUM) # 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 compiler: gcc version 8.4.1 20210217 (GCC) kernel signature: 359f4ac8869e537ceb17bf65b5535b8dea390472c34efc09b54b699781e0c937 all runs: OK # 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 compiler: gcc version 8.4.1 20210217 (GCC) kernel signature: a9ecf14f38ab76c87132366b76fa2aaeb964475c8c127770cfd866de1ed63995 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 revisions tested: 30, total time: 8h7m16.125690286s (build: 3h10m34.244001961s, test: 4h52m36.784788086s) error: bisection is taking too long (>8h0m0s), aborting