ci2 starts bisection 2026-10-15 06:09:00.467058165 +0000 UTC m=+19271.240873580
bisecting fixing commit since c596736dadab2ffef4737fa8acbc1244557126ac
building syzkaller on d6526ea3e6ad9081c902859bbb80f9f840377cb4
ensuring issue is reproducible on original commit c596736dadab2ffef4737fa8acbc1244557126ac

testing commit c596736dadab2ffef4737fa8acbc1244557126ac gcc
compiler: Debian clang version 22.1.8 (1~deb13u4), Debian LLD 22.1.8
kernel signature: 4af032398453706152ffad600513405beb913200c07fe7e31fd1e4b18639ac97
run #0: basic kernel testing failed: SYZFAIL: failed to recv rpc
run #1: basic kernel testing failed: SYZFAIL: failed to recv rpc
run #2: basic kernel testing failed: SYZFAIL: failed to recv rpc
run #3: basic kernel testing failed: SYZFAIL: failed to recv rpc
run #4: basic kernel testing failed: SYZFAIL: failed to recv rpc
run #5: basic kernel testing failed: SYZFAIL: failed to recv rpc
run #6: basic kernel testing failed: SYZFAIL: failed to recv rpc
run #7: basic kernel testing failed: SYZFAIL: failed to recv rpc
run #8: basic kernel testing failed: SYZFAIL: failed to recv rpc
run #9: crashed: general protection fault in iomap_dio_bio_end_io
run #10: crashed: general protection fault in iomap_dio_bio_end_io
run #11: crashed: general protection fault in iomap_dio_bio_end_io
run #12: crashed: general protection fault in iomap_dio_bio_end_io
run #13: crashed: general protection fault in iomap_dio_bio_end_io
run #14: crashed: general protection fault in iomap_dio_bio_end_io
run #15: crashed: general protection fault in iomap_dio_bio_end_io
run #16: crashed: general protection fault in iomap_dio_bio_end_io
run #17: crashed: general protection fault in iomap_dio_bio_end_io
run #18: crashed: general protection fault in iomap_dio_bio_end_io
run #19: crashed: general protection fault in iomap_dio_bio_end_io
representative crash: general protection fault in iomap_dio_bio_end_io, types: [DoS]
check whether we can drop unnecessary instrumentation
disabling configs for [bug_or_warning kasan locking atomic_sleep hang memleak ubsan], they are not needed
testing commit c596736dadab2ffef4737fa8acbc1244557126ac gcc
compiler: Debian clang version 22.1.8 (1~deb13u4), Debian LLD 22.1.8
kernel signature: 0493fb2514e1c4f9839dc32df8f60240fbe28eea70a513cce796cf1386bcc51f
run #0: basic kernel testing failed: SYZFAIL: failed to recv rpc
run #1: basic kernel testing failed: SYZFAIL: failed to recv rpc
run #2: basic kernel testing failed: SYZFAIL: failed to recv rpc
run #3: basic kernel testing failed: SYZFAIL: failed to recv rpc
run #4: crashed: BUG: unable to handle kernel NULL pointer dereference in iomap_dio_bio_end_io
run #5: crashed: BUG: unable to handle kernel NULL pointer dereference in iomap_dio_bio_end_io
run #6: crashed: BUG: unable to handle kernel NULL pointer dereference in iomap_dio_bio_end_io
run #7: crashed: BUG: unable to handle kernel NULL pointer dereference in iomap_dio_bio_end_io
run #8: crashed: BUG: unable to handle kernel NULL pointer dereference in iomap_dio_bio_end_io
run #9: crashed: BUG: unable to handle kernel NULL pointer dereference in iomap_dio_bio_end_io
representative crash: BUG: unable to handle kernel NULL pointer dereference in iomap_dio_bio_end_io, types: [NULL-POINTER-DEREFERENCE]
the bug reproduces without the instrumentation
disabling configs for [bug_or_warning kasan locking atomic_sleep hang memleak ubsan], they are not needed
kconfig minimization: base=3916 full=7799 leaves diff=2156
split chunks (needed=false): <2156>
split chunk #0 of len 2156 into 5 parts
testing without sub-chunk 1/5
disabling configs for [atomic_sleep hang memleak ubsan bug_or_warning kasan locking], they are not needed
testing commit c596736dadab2ffef4737fa8acbc1244557126ac gcc
compiler: Debian clang version 22.1.8 (1~deb13u4), Debian LLD 22.1.8
kernel signature: 03b3409b43e3843519cf66729031580036a5cc7f9454e306041fddb22057e05d
run #0: basic kernel testing failed: SYZFAIL: failed to recv rpc
run #1: basic kernel testing failed: SYZFAIL: failed to recv rpc
run #2: crashed: BUG: unable to handle kernel NULL pointer dereference in iomap_dio_bio_end_io
run #3: crashed: BUG: unable to handle kernel NULL pointer dereference in iomap_dio_bio_end_io
run #4: crashed: BUG: unable to handle kernel NULL pointer dereference in iomap_dio_bio_end_io
run #5: crashed: BUG: unable to handle kernel NULL pointer dereference in iomap_dio_bio_end_io
run #6: crashed: BUG: unable to handle kernel NULL pointer dereference in iomap_dio_bio_end_io
run #7: crashed: BUG: unable to handle kernel NULL pointer dereference in iomap_dio_bio_end_io
run #8: crashed: BUG: unable to handle kernel NULL pointer dereference in iomap_dio_bio_end_io
run #9: crashed: BUG: unable to handle kernel NULL pointer dereference in iomap_dio_bio_end_io
representative crash: BUG: unable to handle kernel NULL pointer dereference in iomap_dio_bio_end_io, types: [NULL-POINTER-DEREFERENCE]
the chunk can be dropped
testing without sub-chunk 2/5
disabling configs for [ubsan bug_or_warning kasan locking atomic_sleep hang memleak], they are not needed
testing commit c596736dadab2ffef4737fa8acbc1244557126ac gcc
compiler: Debian clang version 22.1.8 (1~deb13u4), Debian LLD 22.1.8
kernel signature: bb723d6f65fbf60af9c31f760b1f7a840e6a834f312c4a89775e8909bd145a30
run #0: basic kernel testing failed: SYZFAIL: failed to recv rpc
run #1: basic kernel testing failed: SYZFAIL: failed to recv rpc
run #2: basic kernel testing failed: SYZFAIL: failed to recv rpc
run #3: basic kernel testing failed: SYZFAIL: failed to recv rpc
run #4: crashed: BUG: unable to handle kernel NULL pointer dereference in iomap_dio_bio_end_io
run #5: crashed: BUG: unable to handle kernel NULL pointer dereference in iomap_dio_bio_end_io
run #6: crashed: BUG: unable to handle kernel NULL pointer dereference in iomap_dio_bio_end_io
run #7: crashed: BUG: unable to handle kernel NULL pointer dereference in iomap_dio_bio_end_io
run #8: crashed: BUG: unable to handle kernel NULL pointer dereference in iomap_dio_bio_end_io
run #9: crashed: BUG: unable to handle kernel NULL pointer dereference in iomap_dio_bio_end_io
representative crash: BUG: unable to handle kernel NULL pointer dereference in iomap_dio_bio_end_io, types: [NULL-POINTER-DEREFERENCE]
the chunk can be dropped
testing without sub-chunk 3/5
disabling configs for [locking atomic_sleep hang memleak ubsan bug_or_warning kasan], they are not needed
testing commit c596736dadab2ffef4737fa8acbc1244557126ac gcc
compiler: Debian clang version 22.1.8 (1~deb13u4), Debian LLD 22.1.8
kernel signature: 863b74c1ed312f3893e1e0cb7126ee5e4c889c008662040687e5915c9633148c
run #0: basic kernel testing failed: SYZFAIL: failed to recv rpc
run #1: basic kernel testing failed: SYZFAIL: failed to recv rpc
run #2: basic kernel testing failed: SYZFAIL: failed to recv rpc
run #3: crashed: BUG: unable to handle kernel NULL pointer dereference in iomap_dio_bio_end_io
run #4: crashed: BUG: unable to handle kernel NULL pointer dereference in iomap_dio_bio_end_io
run #5: crashed: BUG: unable to handle kernel NULL pointer dereference in iomap_dio_bio_end_io
run #6: crashed: BUG: unable to handle kernel NULL pointer dereference in iomap_dio_bio_end_io
run #7: crashed: BUG: unable to handle kernel NULL pointer dereference in iomap_dio_bio_end_io
run #8: crashed: BUG: unable to handle kernel NULL pointer dereference in iomap_dio_bio_end_io
run #9: crashed: BUG: unable to handle kernel NULL pointer dereference in iomap_dio_bio_end_io
representative crash: BUG: unable to handle kernel NULL pointer dereference in iomap_dio_bio_end_io, types: [NULL-POINTER-DEREFERENCE]
the chunk can be dropped
testing without sub-chunk 4/5
disabling configs for [atomic_sleep hang memleak ubsan bug_or_warning kasan locking], they are not needed
testing commit c596736dadab2ffef4737fa8acbc1244557126ac gcc
compiler: Debian clang version 22.1.8 (1~deb13u4), Debian LLD 22.1.8
kernel signature: d0e75c37879ef06fff1143d9eabdbb20d9f5193c24b101698428b07428874bc6
run #0: basic kernel testing failed: SYZFAIL: failed to recv rpc
run #1: basic kernel testing failed: SYZFAIL: failed to recv rpc
run #2: basic kernel testing failed: SYZFAIL: failed to recv rpc
run #3: basic kernel testing failed: SYZFAIL: failed to recv rpc
run #4: crashed: BUG: unable to handle kernel NULL pointer dereference in iomap_dio_bio_end_io
run #5: crashed: BUG: unable to handle kernel NULL pointer dereference in iomap_dio_bio_end_io
run #6: crashed: BUG: unable to handle kernel NULL pointer dereference in iomap_dio_bio_end_io
run #7: crashed: BUG: unable to handle kernel NULL pointer dereference in iomap_dio_bio_end_io
run #8: crashed: BUG: unable to handle kernel NULL pointer dereference in iomap_dio_bio_end_io
run #9: crashed: BUG: unable to handle kernel NULL pointer dereference in iomap_dio_bio_end_io
representative crash: BUG: unable to handle kernel NULL pointer dereference in iomap_dio_bio_end_io, types: [NULL-POINTER-DEREFERENCE]
the chunk can be dropped
testing without sub-chunk 5/5
disabling configs for [memleak ubsan bug_or_warning kasan locking atomic_sleep hang], they are not needed
testing commit c596736dadab2ffef4737fa8acbc1244557126ac gcc
compiler: Debian clang version 22.1.8 (1~deb13u4), Debian LLD 22.1.8
kernel signature: 8cc7ba1d072bebbf9d9c984e10a19b09a504936a58987181dd723a6fc387a3be
run #0: basic kernel testing failed: SYZFAIL: failed to recv rpc
run #1: basic kernel testing failed: SYZFAIL: failed to recv rpc
run #2: basic kernel testing failed: SYZFAIL: failed to recv rpc
run #3: basic kernel testing failed: SYZFAIL: failed to recv rpc
run #4: crashed: BUG: unable to handle kernel NULL pointer dereference in iomap_dio_bio_end_io
run #5: crashed: BUG: unable to handle kernel NULL pointer dereference in iomap_dio_bio_end_io
run #6: crashed: BUG: unable to handle kernel NULL pointer dereference in iomap_dio_bio_end_io
run #7: crashed: BUG: unable to handle kernel NULL pointer dereference in iomap_dio_bio_end_io
run #8: crashed: BUG: unable to handle kernel NULL pointer dereference in iomap_dio_bio_end_io
run #9: crashed: BUG: unable to handle kernel NULL pointer dereference in iomap_dio_bio_end_io
representative crash: BUG: unable to handle kernel NULL pointer dereference in iomap_dio_bio_end_io, types: [NULL-POINTER-DEREFERENCE]
the chunk can be dropped
disabling configs for [memleak ubsan bug_or_warning kasan locking atomic_sleep hang], they are not needed
determining the merge base between c596736dadab2ffef4737fa8acbc1244557126ac and 0fcb05b72344f40806cbe810de8872f1698bf053
ffc253263a1375a65fa6c9f62a893e9767fbebfa/Linux 6.6 is a merge base, check if it has the bug
testing commit ffc253263a1375a65fa6c9f62a893e9767fbebfa gcc
compiler: Debian clang version 22.1.8 (1~deb13u4), Debian LLD 22.1.8
kernel signature: 5579fee785a62900022b8ea32d4e6272193382f83be38b93ec389eca1506a5cc
run #0: basic kernel testing failed: SYZFAIL: failed to recv rpc
run #1: basic kernel testing failed: SYZFAIL: failed to recv rpc
run #2: basic kernel testing failed: SYZFAIL: failed to recv rpc
run #3: basic kernel testing failed: SYZFAIL: failed to recv rpc
run #4: basic kernel testing failed: SYZFAIL: failed to recv rpc
run #5: OK
run #6: OK
run #7: OK
run #8: OK
run #9: OK
false negative chance: 0.000
reproducer does not crash the merge base, so there's no known bad commit
revisions tested: 8, total time: 2h25m47.230322088s (build: 46m52.723293514s, test: 1h25m3.722916173s)
crash still not fixed or there were kernel test errors
commit msg: Linux 6.6