bisecting cause commit starting from 7d2a07b769330c34b4deabeed939325c77a7ec2f building syzkaller on 8f58a0efbf867526a0adee8d9a5cb38e2ebf1ee4 testing commit 7d2a07b769330c34b4deabeed939325c77a7ec2f compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.1 kernel signature: ff693c4592c54617a82f5a0c696e1fc8600299187a12bde9ae03b2f77e68f431 run #0: crashed: INFO: task hung in usb_register_dev run #1: crashed: INFO: task hung in usb_register_dev run #2: crashed: INFO: task hung in sisusb_open run #3: crashed: INFO: task hung in usb_register_dev run #4: crashed: INFO: task hung in usb_register_dev run #5: crashed: INFO: task hung in usb_register_dev run #6: crashed: INFO: task hung in sisusb_open run #7: crashed: INFO: task hung in usb_register_dev run #8: crashed: INFO: task hung in usb_register_dev run #9: crashed: INFO: task hung in usb_register_dev run #10: crashed: INFO: task hung in sisusb_open run #11: crashed: INFO: task hung in usb_register_dev run #12: crashed: INFO: task hung in usb_register_dev run #13: crashed: INFO: task hung in sisusb_open run #14: crashed: INFO: task hung in usb_register_dev run #15: crashed: INFO: task hung in sisusb_open run #16: crashed: INFO: task hung in usb_register_dev run #17: crashed: INFO: task hung in usb_register_dev run #18: crashed: INFO: task hung in usb_register_dev run #19: crashed: INFO: task hung in usb_register_dev testing release v5.13 testing commit 62fb9874f5da54fdb243003b386128037319b219 compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.1 kernel signature: 909f5b513362d755e99068620c19525cb2afd91ca8725228219fd46574a48866 run #0: crashed: INFO: task hung in sisusb_open run #1: crashed: INFO: task hung in sisusb_open run #2: crashed: INFO: task hung in usb_register_dev run #3: crashed: INFO: task hung in usb_register_dev run #4: crashed: INFO: task hung in sisusb_open run #5: crashed: INFO: task hung in usb_register_dev run #6: crashed: INFO: task hung in usb_register_dev run #7: crashed: INFO: task hung in usb_register_dev run #8: crashed: INFO: task hung in usb_register_dev run #9: crashed: INFO: task hung in usb_register_dev testing release v5.12 testing commit 9f4ad9e425a1d3b6a34617b8ea226d56a119a717 compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.1 kernel signature: bb4e26dd8f4a005b0fd76547575ef29621d4d502b5251ddaf0a5696974104629 run #0: crashed: INFO: task hung in sisusb_open run #1: crashed: INFO: task hung in usb_register_dev run #2: crashed: INFO: task hung in sisusb_open run #3: crashed: INFO: task hung in usb_register_dev run #4: crashed: INFO: task hung in sisusb_open run #5: crashed: INFO: task hung in usb_register_dev run #6: crashed: INFO: task hung in sisusb_open run #7: crashed: INFO: task hung in sisusb_open run #8: crashed: INFO: task hung in usb_register_dev run #9: crashed: INFO: task hung in usb_register_dev testing release v5.11 testing commit f40ddce88593482919761f74910f42f4b84c004b compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.1 kernel signature: 3222e6ed80513dd888ba5df1ed0bb0fed90b38311471a07f8ebfef14f678fd42 run #0: crashed: INFO: task hung in sisusb_open run #1: crashed: INFO: task hung in sisusb_open run #2: crashed: INFO: task hung in sisusb_open run #3: crashed: INFO: task hung in sisusb_open run #4: crashed: INFO: task hung in sisusb_open run #5: crashed: INFO: task hung in sisusb_open run #6: crashed: INFO: task hung in usb_register_dev run #7: crashed: INFO: task hung in usb_register_dev run #8: crashed: INFO: task hung in usb_register_dev run #9: crashed: INFO: task hung in usb_register_dev testing release v5.10 testing commit 2c85ebc57b3e1817b6ce1a6b703928e113a90442 compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.1 kernel signature: 35c88fb67e0626f0232c5254d6e9f188ff33bdc5ecf75a2e20b39b0354577e82 run #0: crashed: INFO: task hung in sisusb_open run #1: crashed: INFO: task hung in sisusb_open run #2: crashed: INFO: task hung in sisusb_open run #3: crashed: INFO: task hung in usb_register_dev run #4: crashed: INFO: task hung in usb_register_dev run #5: crashed: INFO: task hung in usb_register_dev run #6: crashed: INFO: task hung in usb_register_dev run #7: crashed: INFO: task hung in sisusb_open run #8: crashed: INFO: task hung in sisusb_open run #9: crashed: INFO: task hung in usb_register_dev testing release v5.9 testing commit bbf5c979011a099af5dc76498918ed7df445635b compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.1 kernel signature: 4753fc6113ccf19b73886623e431f1d42203e5df7900561c23ce4babeaf8f756 run #0: crashed: INFO: task hung in sisusb_open run #1: crashed: INFO: task hung in sisusb_open run #2: crashed: INFO: task hung in usb_register_dev run #3: crashed: INFO: task hung in sisusb_open run #4: crashed: INFO: task hung in usb_register_dev run #5: crashed: INFO: task hung in sisusb_open run #6: crashed: INFO: task hung in usb_register_dev run #7: crashed: INFO: task hung in usb_register_dev run #8: crashed: INFO: task hung in usb_register_dev run #9: crashed: INFO: task hung in usb_register_dev testing release v5.8 testing commit bcf876870b95592b52519ed4aafcf9d95999bc9c compiler: gcc (GCC) 8.4.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.1 kernel signature: 64bef9c619e4f9660afe7c971d6b25d7fe2654ae1e3be1137534ef774e1b1619 run #0: crashed: INFO: task hung in usb_register_dev run #1: crashed: INFO: task hung in usb_register_dev run #2: crashed: INFO: task hung in sisusb_open run #3: crashed: INFO: task hung in sisusb_open run #4: crashed: INFO: task hung in sisusb_open run #5: crashed: INFO: task hung in sisusb_open run #6: crashed: INFO: task hung in sisusb_open run #7: crashed: INFO: task hung in usb_register_dev run #8: crashed: INFO: task hung in usb_register_dev run #9: crashed: INFO: task hung in usb_register_dev testing release v5.7 testing commit 3d77e6a8804abcc0504c904bd6e5cdf3a5cf8162 compiler: gcc version 8.4.1 20210217 (GCC), GNU ld (GNU Binutils for Debian) 2.35.1 kernel signature: f76fe31c01316385978519b5b4e89add706a0c3d5fe63afc28097ce825bd70af run #0: crashed: INFO: task hung in usb_register_dev run #1: crashed: INFO: task hung in sisusb_open run #2: crashed: INFO: task hung in usb_register_dev run #3: crashed: INFO: task hung in usb_register_dev run #4: crashed: INFO: task hung in usb_register_dev run #5: crashed: INFO: task hung in usb_register_dev run #6: crashed: INFO: task hung in usb_register_dev run #7: crashed: INFO: task hung in sisusb_open run #8: crashed: INFO: task hung in sisusb_open run #9: crashed: INFO: task hung in usb_register_dev testing release v5.6 testing commit 7111951b8d4973bda27ff663f2cf18b663d15b48 compiler: gcc version 8.4.1 20210217 (GCC) kernel signature: ce1c40f29ea7dac1ab1efcb8a4c28e91d707e6db2dd3c7ba2f4d3ff05339b929 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: b3c4ba3df7c39a3fabac937e75bbde7b3e089468856b64ae00bf2f3c39382d92 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: 777b723a11a14a7c392639d14e72c3ef5939c8bb71516612cf459c66968f9233 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: c77f6e69f03be5c938412ae5ead34dd6adb684211b62c18b8e9752d19759d3d0 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) 2.35.1 kernel signature: a7f6785510638064b28d0aa1555251dad6f53d5cf16ca56c4d2ea7a09d9ea087 all runs: 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 compiler: gcc version 8.4.1 20210217 (GCC) kernel signature: 4336f103ffa0da516506f0b763007a00e4c3ebf396ab5f2da579007a31f63ec1 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: c4c52769fa66392201c776635c6ae2703577151e8cf96067c51bf70a373f9448 all runs: 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) 2.35.1 kernel signature: a01c9cec9030dcbcc03ee11d109f3e7ffeb65633722691b842ea663e9b11717d all runs: 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 compiler: gcc version 8.4.1 20210217 (GCC) kernel signature: d7ebaa9727d022c10ba1d39c3e180c1441c6890937e9fadef0a5e10e4b4fe7ea 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: 26a0da67193956079aad7b052ed5f2869def546dd1879c607b3291fb26243614 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: 19f88c73c5d656a604d6b38cd340bb49ceac0c0858c07648156c1f85e75e9d94 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) 2.35.1 kernel signature: b129e6c1310f1912a27989b12e81cde8543877f2294bb88f261c725ad2b997f3 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: bc45f8acea5020edd4938855e2a9cc90cd943b0c649ee1ac0acd80c9301d1bb5 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 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: 19105e0ac09c69e733723873df15e48b2cc3642c37806646025393eeea13de7e 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: 36aff680f3ae6e27159d2d00a07f1c5cb53f791402128b93b3978a0000d3bb97 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: 4d96e41ef4034caed11b07fadc5e5faa1e14db5014b9f81936120689f2538a0e 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: a6866266f64acacc100bdb535c5c6b891f0a4da929f89571db55f4bd1ed18d10 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: 3bf78413f7c84d6ff7e7f75a5787773521116b97965e86e34ccc8d6f79f6db6c 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: 2d435073220f88df656f4c83dc77e2f3e899a312993997c3a38f15aa696b87ee 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: 76609b2f569951f39771276b1a5a19f3ac85b5707d09c5147b04b2e9dfd76869 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: 21fb4bbf76ab80e8d189b1f7c2fd9b03d685ecc09d2813e1b637943eacd1e5f3 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: 29, total time: 8h2m59.025473279s (build: 3h0m56.27996083s, test: 4h57m32.799328577s) error: bisection is taking too long (>8h0m0s), aborting