bisecting cause commit starting from bdc61aad77faf67187525028f1f355eff3849f22 building syzkaller on e9076525f882cc932139b6e813c39f3f0043c3f5 testing commit bdc61aad77faf67187525028f1f355eff3849f22 compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.2 kernel signature: e76144c61867abdea22916fc41779b4839cffd31a0ae1b845a5ff44d24b83fe7 all runs: crashed: WARNING: suspicious RCU usage in mas_walk testing release v5.17 testing commit f443e374ae131c168a065ea1748feac6b2e76613 compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.2 kernel signature: 8a135fe8d7024f0c68fb943a9dc9ee3e0b0f9fd7f2734492c4d563bc3fa9ace2 all runs: OK # git bisect start bdc61aad77faf67187525028f1f355eff3849f22 f443e374ae131c168a065ea1748feac6b2e76613 Bisecting: 11262 revisions left to test after this (roughly 14 steps) [7b58b82b86c8b65a2b57a4c6cb96a460654f9e09] Merge tag 'perf-tools-for-v5.18-2022-03-26' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux testing commit 7b58b82b86c8b65a2b57a4c6cb96a460654f9e09 compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.2 kernel signature: 54c862f363fe03afd810adfe2ab532b2b81b5253f80308d7076091854d045fc1 all runs: OK # git bisect good 7b58b82b86c8b65a2b57a4c6cb96a460654f9e09 Bisecting: 5632 revisions left to test after this (roughly 13 steps) [0ca785f8985d1c64c456e0d7eb3357b53293b59d] Merge branch 'dev' of git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs.git testing commit 0ca785f8985d1c64c456e0d7eb3357b53293b59d compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.2 kernel signature: 38be58725f80923de9800ed167d2de2f0f94e76ce95d2ff6c03901c88b645640 all runs: OK # git bisect good 0ca785f8985d1c64c456e0d7eb3357b53293b59d Bisecting: 2717 revisions left to test after this (roughly 12 steps) [8620c48d220954d9ab52899bcf092d709d063f69] Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound.git testing commit 8620c48d220954d9ab52899bcf092d709d063f69 compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.2 kernel signature: 533edccb0452cfe572129530a8c55b0d4f170460c93318d0fdc1a734571a0dee all runs: OK # git bisect good 8620c48d220954d9ab52899bcf092d709d063f69 Bisecting: 1364 revisions left to test after this (roughly 10 steps) [afb277259455bdd95876c580b9c042ad79f123ea] Merge branch 'togreg' of git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio.git testing commit afb277259455bdd95876c580b9c042ad79f123ea compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.2 kernel signature: d8f894e2c7f52bd381fabe7906b14765e52ada347f7c4cc738b55d77836597a5 all runs: OK # git bisect good afb277259455bdd95876c580b9c042ad79f123ea Bisecting: 688 revisions left to test after this (roughly 9 steps) [e8e6291c7e6e55970379f3d575329018851c4f40] Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace.git testing commit e8e6291c7e6e55970379f3d575329018851c4f40 compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.2 kernel signature: 5bc6215303761a55c689165788559973becc886c9a10b2387ef9c656088f567b run #0: basic kernel testing failed: BUG: program execution failed: executor NUM: failed to write control pipe: write |NUM: broken pipe 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 e8e6291c7e6e55970379f3d575329018851c4f40 Bisecting: 344 revisions left to test after this (roughly 9 steps) [bd201ced51e59f487bde28ae3d7a076b791f15d3] mm-vmscan-not-necessary-to-re-init-the-list-for-each-iteration-fix testing commit bd201ced51e59f487bde28ae3d7a076b791f15d3 compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.2 kernel signature: 4792de14e6bc71ebf63b0e1ca401660a3d3f7b60bfa1d0daa42f8d29edf628b5 run #0: basic kernel testing failed: BUG: program execution failed: executor NUM: exit status NUM run #1: crashed: WARNING: suspicious RCU usage in mas_walk run #2: crashed: WARNING: suspicious RCU usage in mas_walk run #3: crashed: WARNING: suspicious RCU usage in mas_walk run #4: crashed: WARNING: suspicious RCU usage in mas_walk run #5: crashed: WARNING: suspicious RCU usage in mas_walk run #6: crashed: WARNING: suspicious RCU usage in mas_walk run #7: crashed: WARNING: suspicious RCU usage in mas_walk run #8: crashed: WARNING: suspicious RCU usage in mas_walk run #9: crashed: WARNING: suspicious RCU usage in mas_walk # git bisect bad bd201ced51e59f487bde28ae3d7a076b791f15d3 Bisecting: 171 revisions left to test after this (roughly 8 steps) [17e113b77408a4b2e186e7ee3f57d21b2c86f491] sched: coredump.h: clarify the use of MMF_VM_HUGEPAGE testing commit 17e113b77408a4b2e186e7ee3f57d21b2c86f491 compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.2 kernel signature: 5dfea466cf0f259207af21c70e17d1fc4702910b157339ec0bbbcd73c963c358 all runs: OK # git bisect good 17e113b77408a4b2e186e7ee3f57d21b2c86f491 Bisecting: 85 revisions left to test after this (roughly 7 steps) [980b25cd09ceb1b9d55c017d8228618c19aa8276] lib-kstrtoxc-add-false-true-support-to-kstrtobool-fix testing commit 980b25cd09ceb1b9d55c017d8228618c19aa8276 compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.2 kernel signature: 0b43c3103caf980362658da8a138fcc9a8de2156dfdc2e496c3244fb3f714e3d all runs: OK # git bisect good 980b25cd09ceb1b9d55c017d8228618c19aa8276 Bisecting: 42 revisions left to test after this (roughly 6 steps) [7432b7753352676c298fb165681a804628f4e036] um: remove vma linked list walk testing commit 7432b7753352676c298fb165681a804628f4e036 compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.2 mm/mmap.c:2699:3: error: implicit declaration of function 'khugepaged_enter_vma_merge'; did you mean 'khugepaged_enter_vma'? [-Werror=implicit-function-declaration] # git bisect skip 7432b7753352676c298fb165681a804628f4e036 Bisecting: 42 revisions left to test after this (roughly 6 steps) [10136723de53d1518152831540d7cab695784355] damon: Convert __damon_va_three_regions to use the VMA iterator testing commit 10136723de53d1518152831540d7cab695784355 compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.2 kernel signature: 7fa75e455ba4c29d2bc177443477c8f05e244f004729dc07f98bd9d1faa5ab9c run #0: basic kernel testing failed: BUG: program execution failed: executor NUM: exit status NUM 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 10136723de53d1518152831540d7cab695784355 Bisecting: 33 revisions left to test after this (roughly 5 steps) [40b39116fe8e6fb66e3166ea40138eec506dfd91] perf: use VMA iterator testing commit 40b39116fe8e6fb66e3166ea40138eec506dfd91 compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.2 mm/mmap.c:2699:3: error: implicit declaration of function 'khugepaged_enter_vma_merge'; did you mean 'khugepaged_enter_vma'? [-Werror=implicit-function-declaration] # git bisect skip 40b39116fe8e6fb66e3166ea40138eec506dfd91 Bisecting: 33 revisions left to test after this (roughly 5 steps) [dc12f73c76fae136149a6fb3d2dcc58f5539f07f] coredump: remove vma linked list walk testing commit dc12f73c76fae136149a6fb3d2dcc58f5539f07f compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.2 mm/mmap.c:2699:3: error: implicit declaration of function 'khugepaged_enter_vma_merge'; did you mean 'khugepaged_enter_vma'? [-Werror=implicit-function-declaration] # git bisect skip dc12f73c76fae136149a6fb3d2dcc58f5539f07f Bisecting: 33 revisions left to test after this (roughly 5 steps) [ad9f33cc1fed56672aaed262cc667d69c39d83e7] Docs/{ABI,admin-guide}/damon: document 'avail_operations' sysfs file testing commit ad9f33cc1fed56672aaed262cc667d69c39d83e7 compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.2 kernel signature: f79019641731235dc457e7ee784938d9994078d7c9a6c9924d680052c30dc740 all runs: crashed: WARNING: suspicious RCU usage in mas_walk # git bisect bad ad9f33cc1fed56672aaed262cc667d69c39d83e7 Bisecting: 30 revisions left to test after this (roughly 5 steps) [6b80a745fa64b290f4a44fd56df4ea9f07608fa4] fs/userfaultfd: fix maple state in userfaultfd_register() testing commit 6b80a745fa64b290f4a44fd56df4ea9f07608fa4 compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.2 mm/mmap.c:2699:3: error: implicit declaration of function 'khugepaged_enter_vma_merge'; did you mean 'khugepaged_enter_vma'? [-Werror=implicit-function-declaration] # git bisect skip 6b80a745fa64b290f4a44fd56df4ea9f07608fa4 Bisecting: 30 revisions left to test after this (roughly 5 steps) [efc8ff4041b44871e947f9fa97247bd25961c3fe] bpf: remove VMA linked list testing commit efc8ff4041b44871e947f9fa97247bd25961c3fe compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.2 mm/mmap.c:2699:3: error: implicit declaration of function 'khugepaged_enter_vma_merge'; did you mean 'khugepaged_enter_vma'? [-Werror=implicit-function-declaration] # git bisect skip efc8ff4041b44871e947f9fa97247bd25961c3fe Bisecting: 30 revisions left to test after this (roughly 5 steps) [487c2c6d922605aebe6f470e1a458eb1425548db] nommu: remove uses of VMA linked list testing commit 487c2c6d922605aebe6f470e1a458eb1425548db compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.2 mm/mmap.c:2699:3: error: implicit declaration of function 'khugepaged_enter_vma_merge'; did you mean 'khugepaged_enter_vma'? [-Werror=implicit-function-declaration] # git bisect skip 487c2c6d922605aebe6f470e1a458eb1425548db Bisecting: 30 revisions left to test after this (roughly 5 steps) [e32192c62d0b2fb33f0b77988937d3f2799f6f57] fork: use VMA iterator testing commit e32192c62d0b2fb33f0b77988937d3f2799f6f57 compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.2 mm/mmap.c:2699:3: error: implicit declaration of function 'khugepaged_enter_vma_merge'; did you mean 'khugepaged_enter_vma'? [-Werror=implicit-function-declaration] # git bisect skip e32192c62d0b2fb33f0b77988937d3f2799f6f57 Bisecting: 30 revisions left to test after this (roughly 5 steps) [314c4f115c600bb7ef516d7c639f0586da507e06] mm: remove vmacache testing commit 314c4f115c600bb7ef516d7c639f0586da507e06 compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.2 mm/mmap.c:1811:3: error: implicit declaration of function 'khugepaged_enter_vma_merge'; did you mean 'khugepaged_enter_vma'? [-Werror=implicit-function-declaration] # git bisect skip 314c4f115c600bb7ef516d7c639f0586da507e06 Bisecting: 30 revisions left to test after this (roughly 5 steps) [a241fd539daafb429216f5abe04242de5c79d0b6] sched: use maple tree iterator to walk VMAs testing commit a241fd539daafb429216f5abe04242de5c79d0b6 compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.2 mm/mmap.c:2699:3: error: implicit declaration of function 'khugepaged_enter_vma_merge'; did you mean 'khugepaged_enter_vma'? [-Werror=implicit-function-declaration] # git bisect skip a241fd539daafb429216f5abe04242de5c79d0b6 Bisecting: 30 revisions left to test after this (roughly 5 steps) [906cecbd08e1e0dc411d7ca7ff1509ea086198af] mm: convert vma_lookup() to use mtree_load() testing commit 906cecbd08e1e0dc411d7ca7ff1509ea086198af compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.2 mm/mmap.c:1811:3: error: implicit declaration of function 'khugepaged_enter_vma_merge'; did you mean 'khugepaged_enter_vma'? [-Werror=implicit-function-declaration] # git bisect skip 906cecbd08e1e0dc411d7ca7ff1509ea086198af Bisecting: 30 revisions left to test after this (roughly 5 steps) [221a54bcb18f38c7292c00b9d1a658d40223875a] fs/proc/base: use maple tree iterators in place of linked list testing commit 221a54bcb18f38c7292c00b9d1a658d40223875a compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.2 mm/mmap.c:2699:3: error: implicit declaration of function 'khugepaged_enter_vma_merge'; did you mean 'khugepaged_enter_vma'? [-Werror=implicit-function-declaration] # git bisect skip 221a54bcb18f38c7292c00b9d1a658d40223875a Bisecting: 30 revisions left to test after this (roughly 5 steps) [2a094b3628d828798935d32b7b66bb71fd14913e] mm/mmap: move mmap_region() below do_munmap() testing commit 2a094b3628d828798935d32b7b66bb71fd14913e compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.2 mm/mmap.c:2634:3: error: implicit declaration of function 'khugepaged_enter_vma_merge'; did you mean 'khugepaged_enter_vma'? [-Werror=implicit-function-declaration] # git bisect skip 2a094b3628d828798935d32b7b66bb71fd14913e Bisecting: 30 revisions left to test after this (roughly 5 steps) [510fd7c690c526005ff10e532a54965aa1c5b937] fs/proc/task_mmu: stop using linked list and highest_vm_end testing commit 510fd7c690c526005ff10e532a54965aa1c5b937 compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.2 mm/mmap.c:2699:3: error: implicit declaration of function 'khugepaged_enter_vma_merge'; did you mean 'khugepaged_enter_vma'? [-Werror=implicit-function-declaration] # git bisect skip 510fd7c690c526005ff10e532a54965aa1c5b937 Bisecting: 30 revisions left to test after this (roughly 5 steps) [2d8640f244c1ea6c40acde911d339dabc2ac765d] mm/oom_kill: use maple tree iterators instead of vma linked list testing commit 2d8640f244c1ea6c40acde911d339dabc2ac765d compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.2 mm/mmap.c:2699:3: error: implicit declaration of function 'khugepaged_enter_vma_merge'; did you mean 'khugepaged_enter_vma'? [-Werror=implicit-function-declaration] # git bisect skip 2d8640f244c1ea6c40acde911d339dabc2ac765d Bisecting: 30 revisions left to test after this (roughly 5 steps) [9ee9fa1ecb663fed8b35dcab9abb5e69919da0c9] userfaultfd: use maple tree iterator to iterate VMAs testing commit 9ee9fa1ecb663fed8b35dcab9abb5e69919da0c9 compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.2 mm/mmap.c:2699:3: error: implicit declaration of function 'khugepaged_enter_vma_merge'; did you mean 'khugepaged_enter_vma'? [-Werror=implicit-function-declaration] # git bisect skip 9ee9fa1ecb663fed8b35dcab9abb5e69919da0c9 Bisecting: 30 revisions left to test after this (roughly 5 steps) [976231293619266edbbfef3d3fe700159b0cbd93] mm/msync: use vma_find() instead of vma linked list testing commit 976231293619266edbbfef3d3fe700159b0cbd93 compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.2 mm/mmap.c:2699:3: error: implicit declaration of function 'khugepaged_enter_vma_merge'; did you mean 'khugepaged_enter_vma'? [-Werror=implicit-function-declaration] # git bisect skip 976231293619266edbbfef3d3fe700159b0cbd93 Bisecting: 30 revisions left to test after this (roughly 5 steps) [5cda7974abf8542ce82d10af58e2d285e38ade65] acct: use VMA iterator instead of linked list testing commit 5cda7974abf8542ce82d10af58e2d285e38ade65 compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.2 mm/mmap.c:2699:3: error: implicit declaration of function 'khugepaged_enter_vma_merge'; did you mean 'khugepaged_enter_vma'? [-Werror=implicit-function-declaration] # git bisect skip 5cda7974abf8542ce82d10af58e2d285e38ade65 Bisecting: 30 revisions left to test after this (roughly 5 steps) [dadc132ccf5ea2abc3523d0eb92725ba8a2fd0b3] mm/mremap: use vma_find_intersection() instead of vma linked list testing commit dadc132ccf5ea2abc3523d0eb92725ba8a2fd0b3 compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.2 mm/mmap.c:2699:3: error: implicit declaration of function 'khugepaged_enter_vma_merge'; did you mean 'khugepaged_enter_vma'? [-Werror=implicit-function-declaration] # git bisect skip dadc132ccf5ea2abc3523d0eb92725ba8a2fd0b3 Bisecting: 30 revisions left to test after this (roughly 5 steps) [85533b22739e4066be38dd77291a992fcefd6f25] exec: use VMA iterator instead of linked list testing commit 85533b22739e4066be38dd77291a992fcefd6f25 compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.2 mm/mmap.c:2699:3: error: implicit declaration of function 'khugepaged_enter_vma_merge'; did you mean 'khugepaged_enter_vma'? [-Werror=implicit-function-declaration] # git bisect skip 85533b22739e4066be38dd77291a992fcefd6f25 Bisecting: 30 revisions left to test after this (roughly 5 steps) [bb9eb6badf19d0b6aae4b70c958319935d7010f2] arm64: remove mmap linked list from vdso testing commit bb9eb6badf19d0b6aae4b70c958319935d7010f2 compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.2 mm/mmap.c:2699:3: error: implicit declaration of function 'khugepaged_enter_vma_merge'; did you mean 'khugepaged_enter_vma'? [-Werror=implicit-function-declaration] # git bisect skip bb9eb6badf19d0b6aae4b70c958319935d7010f2 Bisecting: 30 revisions left to test after this (roughly 5 steps) [ce0212630c1f10d5d9c37fb1f00904f726787b7d] ipc/shm: use VMA iterator instead of linked list testing commit ce0212630c1f10d5d9c37fb1f00904f726787b7d compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.2 mm/mmap.c:2699:3: error: implicit declaration of function 'khugepaged_enter_vma_merge'; did you mean 'khugepaged_enter_vma'? [-Werror=implicit-function-declaration] # git bisect skip ce0212630c1f10d5d9c37fb1f00904f726787b7d Bisecting: 30 revisions left to test after this (roughly 5 steps) [872e7d680da2485ff33da3d407f422d4b17a81dc] arm64: change elfcore for_each_mte_vma() to use VMA iterator testing commit 872e7d680da2485ff33da3d407f422d4b17a81dc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.2 mm/mmap.c:2699:3: error: implicit declaration of function 'khugepaged_enter_vma_merge'; did you mean 'khugepaged_enter_vma'? [-Werror=implicit-function-declaration] # git bisect skip 872e7d680da2485ff33da3d407f422d4b17a81dc Bisecting: 30 revisions left to test after this (roughly 5 steps) [a65e56457e348e11d33149435f62cd9bd3ce943d] mm/gup: use maple tree navigation instead of linked list testing commit a65e56457e348e11d33149435f62cd9bd3ce943d compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.2 mm/mmap.c:2699:3: error: implicit declaration of function 'khugepaged_enter_vma_merge'; did you mean 'khugepaged_enter_vma'? [-Werror=implicit-function-declaration] # git bisect skip a65e56457e348e11d33149435f62cd9bd3ce943d Bisecting: 30 revisions left to test after this (roughly 5 steps) [70d71c7b6c00f01eb524a8aa2ccb1ffbc70e9ff4] mm/mprotect: use maple tree navigation instead of vma linked list testing commit 70d71c7b6c00f01eb524a8aa2ccb1ffbc70e9ff4 compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.2 mm/mmap.c:2699:3: error: implicit declaration of function 'khugepaged_enter_vma_merge'; did you mean 'khugepaged_enter_vma'? [-Werror=implicit-function-declaration] # git bisect skip 70d71c7b6c00f01eb524a8aa2ccb1ffbc70e9ff4 Bisecting: 30 revisions left to test after this (roughly 5 steps) [894acbccc779dcc7dd5069e828a09be64676755e] optee: remove vma linked list walk testing commit 894acbccc779dcc7dd5069e828a09be64676755e compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.2 mm/mmap.c:2699:3: error: implicit declaration of function 'khugepaged_enter_vma_merge'; did you mean 'khugepaged_enter_vma'? [-Werror=implicit-function-declaration] # git bisect skip 894acbccc779dcc7dd5069e828a09be64676755e Bisecting: 30 revisions left to test after this (roughly 5 steps) [7dbf1873ad5953d8cf732d5fd5a94c1b95c022b0] parisc: remove mmap linked list from cache handling testing commit 7dbf1873ad5953d8cf732d5fd5a94c1b95c022b0 compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.2 mm/mmap.c:2699:3: error: implicit declaration of function 'khugepaged_enter_vma_merge'; did you mean 'khugepaged_enter_vma'? [-Werror=implicit-function-declaration] # git bisect skip 7dbf1873ad5953d8cf732d5fd5a94c1b95c022b0 Bisecting: 30 revisions left to test after this (roughly 5 steps) [778ae6914961a857596ccdddb69f34ad1d597cd0] selftets/damon/sysfs: test existence and permission of avail_operations testing commit 778ae6914961a857596ccdddb69f34ad1d597cd0 compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.2 kernel signature: b59834166a52840ec2c59d0d68f903961894dc0bfc897f16d46acde2ca191c3d all runs: crashed: WARNING: suspicious RCU usage in mas_walk # git bisect bad 778ae6914961a857596ccdddb69f34ad1d597cd0 Bisecting: 29 revisions left to test after this (roughly 5 steps) [1dfcb33e7c19577cfafd60d3c848f9baf541359d] mm/mlock: use vma iterator and instead of vma linked list revisions tested: 13, total time: 8h18m27.379619067s (build: 6h26m21.848056529s, test: 1h49m27.140055697s) error: bisection is taking too long (>8h0m0s), aborting