bisecting cause commit starting from e9919e11e219eaa5e8041b7b1a196839143e9125 building syzkaller on 609fb51750f5938bd47f9b78c3d7d8fb435d069c testing commit e9919e11e219eaa5e8041b7b1a196839143e9125 with gcc (GCC) 8.1.0 kernel signature: 3c3b5df6bffb92b0aa1722e466eebf4d9905957536640cbbc902915ebf485ff3 run #0: crashed: BUG: unable to handle kernel NULL pointer dereference in free_netdev 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 v5.7 testing commit 3d77e6a8804abcc0504c904bd6e5cdf3a5cf8162 with gcc (GCC) 8.1.0 kernel signature: e2591d40e847dc9d5f9e7cd445eb9180c6d931aa54fb024ee5e8069cc2c13e17 all runs: OK # git bisect start e9919e11e219eaa5e8041b7b1a196839143e9125 3d77e6a8804abcc0504c904bd6e5cdf3a5cf8162 Bisecting: 8232 revisions left to test after this (roughly 13 steps) [631d6914085b4eea8d68a84f800974a6ad8fb5c0] Merge tag 'sound-5.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound testing commit 631d6914085b4eea8d68a84f800974a6ad8fb5c0 with gcc (GCC) 8.1.0 kernel signature: 589466049afe7b18941846a939ea60783a10e20798c1c2a9bb345b6c8331c2fc all runs: OK # git bisect good 631d6914085b4eea8d68a84f800974a6ad8fb5c0 Bisecting: 4087 revisions left to test after this (roughly 12 steps) [cf0c97f148e9e50aa5a7ddd1984a604dd2bde4af] Merge tag 'pinctrl-v5.8-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl testing commit cf0c97f148e9e50aa5a7ddd1984a604dd2bde4af with gcc (GCC) 8.1.0 kernel signature: 05a4c43b4011a3850fe79fda9935b019270b4cde8150f3d8fe2c49b23bc3d13b all runs: basic kernel testing failed: BUG: using smp_processor_id() in preemptible code in ext4_mb_new_blocks # git bisect skip cf0c97f148e9e50aa5a7ddd1984a604dd2bde4af Bisecting: 4087 revisions left to test after this (roughly 12 steps) [aedbdeab00dcfcc6d751f9fb1b4896b01911d494] x86/mce: Use untraced rd/wrmsr in the MCE offline/crash check testing commit aedbdeab00dcfcc6d751f9fb1b4896b01911d494 with gcc (GCC) 8.1.0 kernel signature: 4226d6ac30757be595c33904bcb6d81bb41592ef1fb34688f83418ccc866dab0 all runs: basic kernel testing failed: BUG: using smp_processor_id() in preemptible code in ext4_mb_new_blocks # git bisect skip aedbdeab00dcfcc6d751f9fb1b4896b01911d494 Bisecting: 4087 revisions left to test after this (roughly 12 steps) [79112cc3c29f4a8c73a21428fbcbcb0afb005e3e] usb/xhci-plat: Set PM runtime as active on resume testing commit 79112cc3c29f4a8c73a21428fbcbcb0afb005e3e with gcc (GCC) 8.1.0 kernel signature: a7727b4369c0c7880d77dce0872799e5d809906382ca692ccd53b6d59b4dd57c all runs: OK # git bisect good 79112cc3c29f4a8c73a21428fbcbcb0afb005e3e Bisecting: 4087 revisions left to test after this (roughly 12 steps) [e64f44a884657358812e6c057957be546db03cbe] ceph: skip checking caps when session reconnecting and releasing reqs testing commit e64f44a884657358812e6c057957be546db03cbe with gcc (GCC) 8.1.0 kernel signature: 8d7f4c1b23b53884d7ae00bbd3f2058c10c83f1d016d0f2f6f4cd5ada5e23ff1 all runs: OK # git bisect good e64f44a884657358812e6c057957be546db03cbe Bisecting: 4065 revisions left to test after this (roughly 12 steps) [8ba21426738207711347335b2cf3e99c690fc777] powerpc/hv-24x7: Add rtas call in hv-24x7 driver to get processor details testing commit 8ba21426738207711347335b2cf3e99c690fc777 with gcc (GCC) 8.1.0 kernel signature: ec306b2588d8062caae3fa289d5b71505cecfe167b5caa8b7b3fc81449f0ece6 all runs: OK # git bisect good 8ba21426738207711347335b2cf3e99c690fc777 Bisecting: 3944 revisions left to test after this (roughly 12 steps) [18dbd4cd9b8c957025cf90a3c50102b31bde14f7] Merge branch 'net-ipa-endpoint-configuration-fixes' testing commit 18dbd4cd9b8c957025cf90a3c50102b31bde14f7 with gcc (GCC) 8.1.0 kernel signature: 09abd39450064c43d1308bf1ded1bbcd28b37177ceb3502657e7865f7ad8a73c all runs: basic kernel testing failed: BUG: using smp_processor_id() in preemptible code in ext4_mb_new_blocks # git bisect skip 18dbd4cd9b8c957025cf90a3c50102b31bde14f7 Bisecting: 3944 revisions left to test after this (roughly 12 steps) [a5005c3cda6eeb6b95645e6cc32f58dafeffc976] fuse: fix weird page warning testing commit a5005c3cda6eeb6b95645e6cc32f58dafeffc976 with gcc (GCC) 8.1.0 kernel signature: c3d88cfcd24716d9912b94581f88532e6489a1b9dbac2e56b15b3df5fd73bcfb all runs: OK # git bisect good a5005c3cda6eeb6b95645e6cc32f58dafeffc976 Bisecting: 3939 revisions left to test after this (roughly 12 steps) [c25cba3689c7ab5ae6ee7228d1d49a5652429229] ionic: add pcie_print_link_status testing commit c25cba3689c7ab5ae6ee7228d1d49a5652429229 with gcc (GCC) 8.1.0 kernel signature: d8093cec1a970501c555f58591b2b4dc6033706ebd7be6fdcfb32912b947bac6 all runs: basic kernel testing failed: BUG: using smp_processor_id() in preemptible code in ext4_mb_new_blocks # git bisect skip c25cba3689c7ab5ae6ee7228d1d49a5652429229 Bisecting: 3939 revisions left to test after this (roughly 12 steps) [f8884711f78fa946041cf04492e218c377479a9c] mmc: owl-mmc: Get rid of of_match_ptr() macro testing commit f8884711f78fa946041cf04492e218c377479a9c with gcc (GCC) 8.1.0 kernel signature: d868c175530cf99e4c6c4aaab37def4ab18943681e5804bd07442506e53dc14c all runs: basic kernel testing failed: BUG: using smp_processor_id() in preemptible code in ext4_mb_new_blocks # git bisect skip f8884711f78fa946041cf04492e218c377479a9c Bisecting: 3939 revisions left to test after this (roughly 12 steps) [3311eeebae94b37a21b37af4410bb5e2fe3dc0c0] scripts/checkstack.pl: add arm push handling for stack usage testing commit 3311eeebae94b37a21b37af4410bb5e2fe3dc0c0 with gcc (GCC) 8.1.0 kernel signature: 1e9a318e47423af36f6b364624b017882c21cda7b62a6ca7b6f55b94766fc001 all runs: OK # git bisect good 3311eeebae94b37a21b37af4410bb5e2fe3dc0c0 Bisecting: 3931 revisions left to test after this (roughly 12 steps) [bf97bac9dc6481e9f68992e52bed5cc4b210e636] net: atm: Remove the error message according to the atomic context testing commit bf97bac9dc6481e9f68992e52bed5cc4b210e636 with gcc (GCC) 8.1.0 kernel signature: ee9b208afcac014c645b3ca7e7b4f9719276919b2483c324c7cb30407e2c618b all runs: basic kernel testing failed: BUG: using smp_processor_id() in preemptible code in ext4_mb_new_blocks # git bisect skip bf97bac9dc6481e9f68992e52bed5cc4b210e636 Bisecting: 3931 revisions left to test after this (roughly 12 steps) [0db958b689ca98ec6b6ca20edfffbdc0c4b422ce] dt-bindings: Fix more incorrect 'reg' property sizes in examples testing commit 0db958b689ca98ec6b6ca20edfffbdc0c4b422ce with gcc (GCC) 8.1.0 kernel signature: df62ab5ddf83d9a88050f46f45710d8666c403a6f0bf471df44074e4a8689c3f all runs: basic kernel testing failed: BUG: using smp_processor_id() in preemptible code in ext4_mb_new_blocks # git bisect skip 0db958b689ca98ec6b6ca20edfffbdc0c4b422ce Bisecting: 3931 revisions left to test after this (roughly 12 steps) [607e954ac50ed39944db72874d80240aab15004f] media: atomisp: allow passing firmware name at modprobe time testing commit 607e954ac50ed39944db72874d80240aab15004f with gcc (GCC) 8.1.0 kernel signature: b6793f2edfe1bcb792caefd58e870ad3ce988360de0380f740f4790e39ad075a all runs: OK # git bisect good 607e954ac50ed39944db72874d80240aab15004f Bisecting: 3896 revisions left to test after this (roughly 12 steps) [07007dbee468389b7124bc2efb7241a93067d901] Merge tag 'mlx5-fixes-2020-06-11' of git://git.kernel.org/pub/scm/linux/kernel/git/saeed/linux testing commit 07007dbee468389b7124bc2efb7241a93067d901 with gcc (GCC) 8.1.0 kernel signature: c4c0df0f8fb4776158d064e919d6142f4ad985177e3994ca76e8b22d903aa4f5 all runs: basic kernel testing failed: BUG: using smp_processor_id() in preemptible code in ext4_mb_new_blocks # git bisect skip 07007dbee468389b7124bc2efb7241a93067d901 Bisecting: 3896 revisions left to test after this (roughly 12 steps) [c84dc6e68a1d2464e050d9694be4e4ff49e32bfd] dma-pool: add additional coherent pools to map to gfp mask testing commit c84dc6e68a1d2464e050d9694be4e4ff49e32bfd with gcc (GCC) 8.1.0 kernel signature: 7d911291868a07cbed4b0a6ff8fcc09648b67f373c9e8db1ebb7ce7ecd78d6e5 all runs: OK # git bisect good c84dc6e68a1d2464e050d9694be4e4ff49e32bfd Bisecting: 3896 revisions left to test after this (roughly 12 steps) [9deca1e3e2b682a2b1e40f8970f36e1703e27bfc] staging: vt6656: vnt_beacon_xmit use extra_tx_headroom. testing commit 9deca1e3e2b682a2b1e40f8970f36e1703e27bfc with gcc (GCC) 8.1.0 kernel signature: 8c50c7978323cbe37429ffc5758dafad5ba4b950399eea7faf069849f8c97b7f all runs: OK # git bisect good 9deca1e3e2b682a2b1e40f8970f36e1703e27bfc Bisecting: 3626 revisions left to test after this (roughly 12 steps) [95288a9b3beee8dd69d73b7691e36f2f231b7903] Merge tag 'ceph-for-5.8-rc1' of git://github.com/ceph/ceph-client testing commit 95288a9b3beee8dd69d73b7691e36f2f231b7903 with gcc (GCC) 8.1.0 kernel signature: c4838ea33f994a8f06cb61ecab095d2aa244b136562616c8e1b3a3d53bc615cf all runs: basic kernel testing failed: BUG: using smp_processor_id() in preemptible code in ext4_mb_new_blocks # git bisect skip 95288a9b3beee8dd69d73b7691e36f2f231b7903 Bisecting: 3626 revisions left to test after this (roughly 12 steps) [04df45fba52177f796a20642b92fdc44e489e174] soc: imx8m: No need to put node when of_find_compatible_node() failed testing commit 04df45fba52177f796a20642b92fdc44e489e174 with gcc (GCC) 8.1.0 kernel signature: b29aef693346a41397f8a1e7968f30c71f111b69dbbffb1d3522f8760fee5643 all runs: OK # git bisect good 04df45fba52177f796a20642b92fdc44e489e174 Bisecting: 3626 revisions left to test after this (roughly 12 steps) [96ec7b3142b467fb4af309adcb63c542bda727b1] dt-bindings: usb: qcom,dwc3: Introduce interconnect properties for Qualcomm DWC3 driver testing commit 96ec7b3142b467fb4af309adcb63c542bda727b1 with gcc (GCC) 8.1.0 kernel signature: 3be041b528a978200f48e38ccd8f0cb82c61aed5ed3bbcecef2a3c63948c12d4 all runs: OK # git bisect good 96ec7b3142b467fb4af309adcb63c542bda727b1 Bisecting: 3536 revisions left to test after this (roughly 12 steps) [20da1e8bb06d0e3ccd172de3e193c987e88013cb] xtensa: add show_stack_loglvl() testing commit 20da1e8bb06d0e3ccd172de3e193c987e88013cb with gcc (GCC) 8.1.0 kernel signature: eee6efb02effaf7edd4b782716ee327bfb343aea59eee4e776f7d189bc599535 all runs: basic kernel testing failed: BUG: using smp_processor_id() in preemptible code in ext4_mb_new_blocks # git bisect skip 20da1e8bb06d0e3ccd172de3e193c987e88013cb Bisecting: 3536 revisions left to test after this (roughly 12 steps) [35e884f89df4c48566d745dc5a97a0d058d04263] Merge tag 'for-linus-5.8b-rc4-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip testing commit 35e884f89df4c48566d745dc5a97a0d058d04263 with gcc (GCC) 8.1.0 kernel signature: 0525c10476663a201af78bf26f9a172033ba8ab38315694fa669bb6617250685 run #0: crashed: BUG: unable to handle kernel NULL pointer dereference in free_netdev 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" "/tmp/syz-executor301269117" "root@10.128.10.45:./syz-executor301269117"]: exit status 1 Connection timed out during banner exchange lost connection run #2: 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-executor900467820" "root@10.128.10.0:./syz-executor900467820"]: exit status 1 Connection timed out during banner exchange lost connection run #3: OK run #4: OK run #5: OK run #6: OK run #7: OK run #8: OK run #9: OK # git bisect bad 35e884f89df4c48566d745dc5a97a0d058d04263 Bisecting: 3328 revisions left to test after this (roughly 12 steps) [9413b9a690ec8aeaedea74bb875079d36f295304] Merge tag 'drm-next-msm-5.8-2020-06-08' of git://anongit.freedesktop.org/drm/drm testing commit 9413b9a690ec8aeaedea74bb875079d36f295304 with gcc (GCC) 8.1.0 kernel signature: f173c9c27e520074a0cdb9f6237ef9f631fba3ccac24d2fcb60e89e6121ee1c8 all runs: basic kernel testing failed: BUG: using smp_processor_id() in preemptible code in ext4_mb_new_blocks # git bisect skip 9413b9a690ec8aeaedea74bb875079d36f295304 Bisecting: 3328 revisions left to test after this (roughly 12 steps) [8e36baf97b252cdcafa53589e8227cbb1e85f0b0] dma-remap: align the size in dma_common_*_remap() testing commit 8e36baf97b252cdcafa53589e8227cbb1e85f0b0 with gcc (GCC) 8.1.0 kernel signature: 2d0d895bbda5b4cedd46749a3d4acfeb50f8be5278d89646a21bdbf4a6fc6ca2 all runs: basic kernel testing failed: BUG: using smp_processor_id() in preemptible code in ext4_mb_new_blocks # git bisect skip 8e36baf97b252cdcafa53589e8227cbb1e85f0b0 Bisecting: 3328 revisions left to test after this (roughly 12 steps) [f983622ae60516d634008c7b1ff9ffff4f7bb8ae] scsi: core: Avoid calling synchronize_rcu() for each device in scsi_host_block() testing commit f983622ae60516d634008c7b1ff9ffff4f7bb8ae with gcc (GCC) 8.1.0 kernel signature: 54a2318fb0f795f27d9686e7b281c0cf580493a47cab02afd355be6a16a9eec6 all runs: OK # git bisect good f983622ae60516d634008c7b1ff9ffff4f7bb8ae Bisecting: 3215 revisions left to test after this (roughly 12 steps) [4e3a16ee9148e966678bbc713579235422271a63] Merge tag 'iommu-updates-v5.8' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu testing commit 4e3a16ee9148e966678bbc713579235422271a63 with gcc (GCC) 8.1.0 kernel signature: 6ebbc5bcaea749900ed7f01c64d99df21d051f09ddd15a3d3e24ee289ce54da3 all runs: basic kernel testing failed: BUG: using smp_processor_id() in preemptible code in ext4_mb_new_blocks # git bisect skip 4e3a16ee9148e966678bbc713579235422271a63 Bisecting: 3215 revisions left to test after this (roughly 12 steps) [322f3d45a17f64494152bd5583b68c8855b539c0] RDMA/bnxt: Delete 'nq_ptr' variable which is not used testing commit 322f3d45a17f64494152bd5583b68c8855b539c0 with gcc (GCC) 8.1.0 kernel signature: e5b97896b11c32edcc07b59978131bed750dba22731badb2aa4de269038f34f5 all runs: OK # git bisect good 322f3d45a17f64494152bd5583b68c8855b539c0 Bisecting: 3215 revisions left to test after this (roughly 12 steps) [5311ebfb612f08ec2a712a86d0af7ee2b423a9fc] arm64: debug: mark a function as __init to save some memory testing commit 5311ebfb612f08ec2a712a86d0af7ee2b423a9fc with gcc (GCC) 8.1.0 kernel signature: 5b7234a433b3e5c6d1eae771a105838611793edc57f6faab2c1c98b1cbd61521 all runs: OK # git bisect good 5311ebfb612f08ec2a712a86d0af7ee2b423a9fc Bisecting: 3213 revisions left to test after this (roughly 12 steps) [44b6141ebe936808fc59b386e3e259bef6c9bba6] ARM: multi_v7_defconfig: Enable r8a7742 SoC testing commit 44b6141ebe936808fc59b386e3e259bef6c9bba6 with gcc (GCC) 8.1.0 kernel signature: 09c19ff5e9fed6261c8030489a74724ba670103b819670c361fad2c10665288d all runs: OK # git bisect good 44b6141ebe936808fc59b386e3e259bef6c9bba6 Bisecting: 3213 revisions left to test after this (roughly 12 steps) [22c328b1bc182426d7c5345824a50f4388ee132a] Merge tag 'tegra-for-5.8-dt-bindings' of git://git.kernel.org/pub/scm/linux/kernel/git/tegra/linux into arm/dt testing commit 22c328b1bc182426d7c5345824a50f4388ee132a with gcc (GCC) 8.1.0 kernel signature: 97365cecc6d062e32b1db2ce2b94ce814d27e789e25e502df0c6666324226073 all runs: OK # git bisect good 22c328b1bc182426d7c5345824a50f4388ee132a Bisecting: 3126 revisions left to test after this (roughly 12 steps) [d26a42a9614083413e778832a6efbdf0038c3bff] Merge tag 'rpmsg-v5.8' of git://git.kernel.org/pub/scm/linux/kernel/git/andersson/remoteproc testing commit d26a42a9614083413e778832a6efbdf0038c3bff with gcc (GCC) 8.1.0 kernel signature: 2651ce77c816b50bf77b62fd755449b16724efa5a9cf6c9d668f3922397d6c50 all runs: basic kernel testing failed: BUG: using smp_processor_id() in preemptible code in ext4_mb_new_blocks # git bisect skip d26a42a9614083413e778832a6efbdf0038c3bff Bisecting: 3126 revisions left to test after this (roughly 12 steps) [de308d1815c9e8fe602a958c5c76142ff6501d75] x86/apic: Make TSC deadline timer detection message visible testing commit de308d1815c9e8fe602a958c5c76142ff6501d75 with gcc (GCC) 8.1.0 kernel signature: 737f6f20b409c79c5fd8e8eda206903f30f75ea3f45cb69606b5b1108da58d9e all runs: OK # git bisect good de308d1815c9e8fe602a958c5c76142ff6501d75 Bisecting: 3125 revisions left to test after this (roughly 12 steps) [71159b6ecb067565fb41faba616116e8c0fc10ea] scsi: zfcp: Fence early sysfs interfaces for accesses of shost objects testing commit 71159b6ecb067565fb41faba616116e8c0fc10ea with gcc (GCC) 8.1.0 kernel signature: 6c932ee9dbf53b6093cdd8b11444a0043b0d0da8dcaef7483637178d000c1e5c all runs: OK # git bisect good 71159b6ecb067565fb41faba616116e8c0fc10ea Bisecting: 3077 revisions left to test after this (roughly 12 steps) [26749b3201ab05e288fbf78fbc8585dfa2da3218] dma-direct: mark __dma_direct_alloc_pages static revisions tested: 35, total time: 8h8m1.789901069s (build: 3h28m2.416228338s, test: 4h35m1.077672641s) error: bisection is taking too long (>8h0m0s), aborting