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