bisecting cause commit starting from ab8be66e724ecf4bffb2895c9c91bbd44fa687c7 building syzkaller on 4285ffa3fe16cc91c4747756dad420f703ee616e testing commit ab8be66e724ecf4bffb2895c9c91bbd44fa687c7 with gcc (GCC) 8.1.0 kernel signature: e0246cfe49b533662af203bce575d776217dfca7b35e94951ccca00a124701d0 all runs: crashed: kernel BUG at mm/vmalloc.c:LINE! testing release v5.7 testing commit 3d77e6a8804abcc0504c904bd6e5cdf3a5cf8162 with gcc (GCC) 8.1.0 kernel signature: 0b6eb107172ecae9ae3bca90e7841451a89e2a0b351fab59c647a9939ad81d2f all runs: OK # git bisect start ab8be66e724ecf4bffb2895c9c91bbd44fa687c7 3d77e6a8804abcc0504c904bd6e5cdf3a5cf8162 Bisecting: 13278 revisions left to test after this (roughly 14 steps) [42612e7763315cf5d43c4422781e75f9ee57597a] Merge tag 'f2fs-for-5.8' of git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs testing commit 42612e7763315cf5d43c4422781e75f9ee57597a with gcc (GCC) 8.1.0 kernel signature: 188049a3667ba760c24b1c6810ab282ec8a0c068f3162e64f3b2e18b010a7514 all runs: basic kernel testing failed: BUG: using smp_processor_id() in preemptible code in ext4_mb_new_blocks # git bisect skip 42612e7763315cf5d43c4422781e75f9ee57597a Bisecting: 13278 revisions left to test after this (roughly 14 steps) [4964dd29140a44e26474dbdca559b7393aba6c39] Merge tag 'afs-fixes-20200609' of git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs testing commit 4964dd29140a44e26474dbdca559b7393aba6c39 with gcc (GCC) 8.1.0 kernel signature: 4e93f79208b4e79916dd2a7762ac14ab54ba008f5997c75ff1d67dd979ea8eae all runs: basic kernel testing failed: BUG: using smp_processor_id() in preemptible code in ext4_mb_new_blocks # git bisect skip 4964dd29140a44e26474dbdca559b7393aba6c39 Bisecting: 13278 revisions left to test after this (roughly 14 steps) [e19485dc7a0d210b428a249c0595769bd495fb71] fpga: dfl: pci: reduce the scope of variable 'ret' testing commit e19485dc7a0d210b428a249c0595769bd495fb71 with gcc (GCC) 8.1.0 kernel signature: d878b2dc997e904479bb3f37dc3710397a7d7ddbf7aefe1d8f956af0825885d5 all runs: OK # git bisect good e19485dc7a0d210b428a249c0595769bd495fb71 Bisecting: 5226 revisions left to test after this (roughly 12 steps) [290160b400263202042cb7676ab6391119c82ed6] Merge remote-tracking branch 'crypto/master' testing commit 290160b400263202042cb7676ab6391119c82ed6 with gcc (GCC) 8.1.0 kernel signature: ce83de6cc612a4afe5c9a073b2f30b8ef72c069335a04b658e30bc311031e643 all runs: OK # git bisect good 290160b400263202042cb7676ab6391119c82ed6 Bisecting: 2624 revisions left to test after this (roughly 11 steps) [f5db0044e63b7fb2840424d343d817aa3f26d4db] Merge remote-tracking branch 'spi/for-next' testing commit f5db0044e63b7fb2840424d343d817aa3f26d4db with gcc (GCC) 8.1.0 kernel signature: f5fce7b783b5be29ada0448dd3101881541f15eeb5e93fe97f3ed269f8b607f3 all runs: OK # git bisect good f5db0044e63b7fb2840424d343d817aa3f26d4db Bisecting: 1173 revisions left to test after this (roughly 10 steps) [8af3f71b589259f680693088eba6a7005b5b3e71] Merge remote-tracking branch 'staging/staging-next' testing commit 8af3f71b589259f680693088eba6a7005b5b3e71 with gcc (GCC) 8.1.0 kernel signature: 5c8ae96c57c0d0af7e49466a5f7efadbed3c30f03e7329bf27ff7e687bc2cd21 all runs: crashed: kernel BUG at mm/vmalloc.c:LINE! # git bisect bad 8af3f71b589259f680693088eba6a7005b5b3e71 Bisecting: 734 revisions left to test after this (roughly 10 steps) [d182c1bb4c187bc14f70c341b2c62fc617599076] Merge remote-tracking branch 'driver-core/driver-core-next' testing commit d182c1bb4c187bc14f70c341b2c62fc617599076 with gcc (GCC) 8.1.0 kernel signature: 4b9e4fd1d7bc27777acc632bf2316c35090a7fa82526861db86f72a96bbd099b all runs: crashed: kernel BUG at mm/vmalloc.c:LINE! # git bisect bad d182c1bb4c187bc14f70c341b2c62fc617599076 Bisecting: 259 revisions left to test after this (roughly 9 steps) [6c526a12c80e54d94e911f092ba5d13f6d7220c1] Merge remote-tracking branch 'rcu/rcu/next' testing commit 6c526a12c80e54d94e911f092ba5d13f6d7220c1 with gcc (GCC) 8.1.0 kernel signature: 9bfc92d59d18c92896bc9a87cbd0f2ab64997dac080adc00ecde446664eb91ae all runs: crashed: kernel BUG at mm/vmalloc.c:LINE! # git bisect bad 6c526a12c80e54d94e911f092ba5d13f6d7220c1 Bisecting: 223 revisions left to test after this (roughly 8 steps) [5a346406b5139645a5e8975179a423385729b6a0] Merge remote-tracking branch 'ftrace/for-next' testing commit 5a346406b5139645a5e8975179a423385729b6a0 with gcc (GCC) 8.1.0 kernel signature: 81e5aa45714a73372ec5d4d27cc60ea1e8b930f41b3ec61d9d39931a69d6cff4 all runs: crashed: kernel BUG at mm/vmalloc.c:LINE! # git bisect bad 5a346406b5139645a5e8975179a423385729b6a0 Bisecting: 107 revisions left to test after this (roughly 7 steps) [e9c8c19545f31ec817507ee11884356799f14917] Merge branch 'perf/core' testing commit e9c8c19545f31ec817507ee11884356799f14917 with gcc (GCC) 8.1.0 kernel signature: 1de8fe305f8ae82d7aa9cd91b8c001fed8217039b2f6be277af17f96f72bd371 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 e9c8c19545f31ec817507ee11884356799f14917 Bisecting: 57 revisions left to test after this (roughly 6 steps) [9227c1cbc6d1a0464e2802fe282a6f6656f8341f] Merge branch 'timers/urgent' testing commit 9227c1cbc6d1a0464e2802fe282a6f6656f8341f with gcc (GCC) 8.1.0 kernel signature: 4fdfb875d279470d08b125c56cf5e3581a09fb36f2b630e1585bc300837ae8e6 run #0: crashed: kernel BUG at mm/vmalloc.c:LINE! run #1: crashed: kernel BUG at mm/vmalloc.c:LINE! run #2: crashed: kernel BUG at mm/vmalloc.c:LINE! run #3: crashed: kernel BUG at mm/vmalloc.c:LINE! run #4: crashed: kernel BUG at mm/vmalloc.c:LINE! run #5: crashed: kernel BUG at mm/vmalloc.c:LINE! run #6: crashed: kernel BUG at mm/vmalloc.c:LINE! run #7: crashed: kernel BUG at mm/vmalloc.c:LINE! run #8: crashed: kernel BUG at mm/vmalloc.c:LINE! run #9: boot failed: can't ssh into the instance # git bisect bad 9227c1cbc6d1a0464e2802fe282a6f6656f8341f Bisecting: 26 revisions left to test after this (roughly 5 steps) [8f5b4fde9834d5dc9f2a826170947c516127212f] Merge branch 'sched/urgent' testing commit 8f5b4fde9834d5dc9f2a826170947c516127212f with gcc (GCC) 8.1.0 kernel signature: a01e3c373af4523001f50c0b1cec2c0cf782c2e030edce0f0993e73f043074c7 all runs: crashed: kernel BUG at mm/vmalloc.c:LINE! # git bisect bad 8f5b4fde9834d5dc9f2a826170947c516127212f Bisecting: 9 revisions left to test after this (roughly 4 steps) [7758295904bc3cbafe199a8bc3d8aa177a1e1e46] Merge branch 'irq/core' testing commit 7758295904bc3cbafe199a8bc3d8aa177a1e1e46 with gcc (GCC) 8.1.0 kernel signature: e9766a95264b592427140ce20fdb007b9ed02dbe83361a43852d8e7872581c94 all runs: OK # git bisect good 7758295904bc3cbafe199a8bc3d8aa177a1e1e46 Bisecting: 3 revisions left to test after this (roughly 2 steps) [220dbf4aaa5b574f67ce23fa4d7b0104515bc60e] Merge branch 'WIP.core/headers' testing commit 220dbf4aaa5b574f67ce23fa4d7b0104515bc60e with gcc (GCC) 8.1.0 kernel signature: e8a4e3c57a298bc5d48471b378651f7525ddfb53ed973223c36aeac0e815b04b all runs: crashed: kernel BUG at mm/vmalloc.c:LINE! # git bisect bad 220dbf4aaa5b574f67ce23fa4d7b0104515bc60e Bisecting: 2 revisions left to test after this (roughly 2 steps) [23e5b2435542ad85492a5c81c8cc8f7b28f111fc] Merge branch 'WIP.fixes' testing commit 23e5b2435542ad85492a5c81c8cc8f7b28f111fc with gcc (GCC) 8.1.0 kernel signature: 782d83f8f3aa70c084da7e88f3556c5898874fc06f8f7a28af3ad08e1599905c all runs: crashed: kernel BUG at mm/vmalloc.c:LINE! # git bisect bad 23e5b2435542ad85492a5c81c8cc8f7b28f111fc Bisecting: 1 revision left to test after this (roughly 1 step) [1c14587141a0687e6550a7015b862904654cc9e0] Merge branch 'core/urgent' testing commit 1c14587141a0687e6550a7015b862904654cc9e0 with gcc (GCC) 8.1.0 kernel signature: 2d03d084ac7efb27156b8349c7efae86febd14dc89de89ced5e790bb485bb57b all runs: OK # git bisect good 1c14587141a0687e6550a7015b862904654cc9e0 Bisecting: 0 revisions left to test after this (roughly 0 steps) [bdbfb1d52d5e576c1d275fd8ab59b677011229e8] Revert "mm/vmalloc: modify struct vmap_area to reduce its size" testing commit bdbfb1d52d5e576c1d275fd8ab59b677011229e8 with gcc (GCC) 8.1.0 kernel signature: 32917961ee8859730363a7de95e90bda72a6c96f55c5b0a233c51a10cf432829 all runs: crashed: kernel BUG at mm/vmalloc.c:LINE! # git bisect bad bdbfb1d52d5e576c1d275fd8ab59b677011229e8 bdbfb1d52d5e576c1d275fd8ab59b677011229e8 is the first bad commit commit bdbfb1d52d5e576c1d275fd8ab59b677011229e8 Author: Ingo Molnar Date: Sun Jun 7 21:12:51 2020 +0200 Revert "mm/vmalloc: modify struct vmap_area to reduce its size" This reverts commit 688fcbfc06e4fdfbb7e1d5a942a1460fe6379d2d. Signed-off-by: Ingo Molnar Conflicts: mm/vmalloc.c include/linux/vmalloc.h | 20 +++++++------------- mm/vmalloc.c | 24 ++++++++++++++---------- 2 files changed, 21 insertions(+), 23 deletions(-) parent commit 719fdd32921fb7e3208db8832d32ae1c2d68900f wasn't tested testing commit 719fdd32921fb7e3208db8832d32ae1c2d68900f with gcc (GCC) 8.1.0 kernel signature: eb307b9ade0d8a81c77e533e5494cf9fe64d26035143142e262f299572a9f301 culprit signature: 32917961ee8859730363a7de95e90bda72a6c96f55c5b0a233c51a10cf432829 parent signature: eb307b9ade0d8a81c77e533e5494cf9fe64d26035143142e262f299572a9f301 revisions tested: 19, total time: 3h43m10.610530889s (build: 1h46m3.778001178s, test: 1h53m57.232276667s) first bad commit: bdbfb1d52d5e576c1d275fd8ab59b677011229e8 Revert "mm/vmalloc: modify struct vmap_area to reduce its size" cc: ["akpm@linux-foundation.org" "linux-kernel@vger.kernel.org" "linux-mm@kvack.org" "mingo@kernel.org"] crash: kernel BUG at mm/vmalloc.c:LINE! ------------[ cut here ]------------ kernel BUG at mm/vmalloc.c:3121!