ci2 starts bisection 2026-06-28 05:56:18.183523091 +0000 UTC m=+138761.688071580
bisecting fixing commit since c09fbcd31ae6d71e7c69545839bec92d8e15c13b
building syzkaller on c6143aacd8e1a01f2482ab5eec709f9949710cee
ensuring issue is reproducible on original commit c09fbcd31ae6d71e7c69545839bec92d8e15c13b

testing commit c09fbcd31ae6d71e7c69545839bec92d8e15c13b gcc
compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8
kernel signature: cc25c1f1399dc9e366427b641cd2d3e41ea4cb1ec01e2a62fcfe106be865ba73
all runs: crashed: BUG: unable to handle kernel paging request in ext4_ext_map_blocks
representative crash: BUG: unable to handle kernel paging request in ext4_ext_map_blocks, types: [MEMORY_SAFETY_BUG]
check whether we can drop unnecessary instrumentation
disabling configs for [ubsan kasan locking atomic_sleep hang memleak], they are not needed
testing commit c09fbcd31ae6d71e7c69545839bec92d8e15c13b gcc
compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8
kernel signature: e21c376e2014d9a4fcf4ebad21718d2d9464f72129523de7ca848decb81b193a
run #0: crashed: BUG: unable to handle kernel paging request in ext4_ext_map_blocks
run #1: crashed: BUG: unable to handle kernel paging request in ext4_ext_map_blocks
run #2: crashed: BUG: unable to handle kernel paging request in ext4_ext_map_blocks
run #3: crashed: BUG: unable to handle kernel paging request in ext4_ext_map_blocks
run #4: crashed: BUG: unable to handle kernel paging request in ext4_ext_map_blocks
run #5: crashed: BUG: unable to handle kernel paging request in ext4_ext_map_blocks
run #6: OK
run #7: crashed: BUG: unable to handle kernel paging request in ext4_ext_map_blocks
run #8: crashed: BUG: unable to handle kernel paging request in ext4_ext_map_blocks
run #9: crashed: BUG: unable to handle kernel paging request in ext4_ext_map_blocks
representative crash: BUG: unable to handle kernel paging request in ext4_ext_map_blocks, types: [MEMORY_SAFETY_BUG]
the bug reproduces without the instrumentation
disabling configs for [ubsan kasan locking atomic_sleep hang memleak], they are not needed
kconfig minimization: base=3913 full=7800 leaves diff=2159
split chunks (needed=false): <2159>
split chunk #0 of len 2159 into 5 parts
testing without sub-chunk 1/5
disabling configs for [ubsan kasan locking atomic_sleep hang memleak], they are not needed
testing commit c09fbcd31ae6d71e7c69545839bec92d8e15c13b gcc
compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8
kernel signature: c43b7540c0e7cfaae269ac159abc7e677e1cdeb75b6facd73c405479996b916b
run #0: crashed: BUG: unable to handle kernel paging request in ext4_ext_map_blocks
run #1: crashed: BUG: unable to handle kernel paging request in ext4_ext_map_blocks
run #2: crashed: BUG: unable to handle kernel paging request in ext4_ext_map_blocks
run #3: crashed: BUG: unable to handle kernel paging request in ext4_ext_map_blocks
run #4: crashed: BUG: unable to handle kernel paging request in ext4_ext_map_blocks
run #5: crashed: BUG: unable to handle kernel paging request in ext4_ext_map_blocks
run #6: crashed: BUG: unable to handle kernel paging request in ext4_ext_map_blocks
run #7: crashed: BUG: unable to handle kernel paging request in ext4_ext_map_blocks
run #8: crashed: BUG: unable to handle kernel paging request in ext4_ext_map_blocks
run #9: OK
representative crash: BUG: unable to handle kernel paging request in ext4_ext_map_blocks, types: [MEMORY_SAFETY_BUG]
the chunk can be dropped
testing without sub-chunk 2/5
disabling configs for [hang memleak ubsan kasan locking atomic_sleep], they are not needed
testing commit c09fbcd31ae6d71e7c69545839bec92d8e15c13b gcc
compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8
kernel signature: 40b5d9adae2052b868f190cb9ffa7e74d63bed94cbd2a945fae90bc4ece986b6
run #0: crashed: BUG: unable to handle kernel paging request in ext4_ext_map_blocks
run #1: crashed: BUG: unable to handle kernel paging request in ext4_ext_map_blocks
run #2: crashed: BUG: unable to handle kernel paging request in ext4_ext_map_blocks
run #3: crashed: BUG: unable to handle kernel paging request in ext4_ext_map_blocks
run #4: OK
run #5: crashed: BUG: unable to handle kernel paging request in ext4_ext_map_blocks
run #6: crashed: BUG: unable to handle kernel paging request in ext4_ext_map_blocks
run #7: OK
run #8: OK
run #9: OK
representative crash: BUG: unable to handle kernel paging request in ext4_ext_map_blocks, types: [MEMORY_SAFETY_BUG]
the chunk can be dropped
testing without sub-chunk 3/5
disabling configs for [atomic_sleep hang memleak ubsan kasan locking], they are not needed
testing commit c09fbcd31ae6d71e7c69545839bec92d8e15c13b gcc
compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8
kernel signature: ba79b655873b3142566be4207d1dca9c7599705a5ca6514e6fa93031c5fcd2df
run #0: crashed: BUG: unable to handle kernel paging request in ext4_ext_map_blocks
run #1: OK
run #2: crashed: BUG: unable to handle kernel paging request in ext4_ext_map_blocks
run #3: OK
run #4: OK
run #5: crashed: BUG: unable to handle kernel paging request in ext4_ext_map_blocks
run #6: crashed: BUG: unable to handle kernel paging request in ext4_ext_map_blocks
run #7: crashed: BUG: unable to handle kernel paging request in ext4_ext_map_blocks
run #8: crashed: BUG: unable to handle kernel paging request in ext4_ext_map_blocks
run #9: OK
representative crash: BUG: unable to handle kernel paging request in ext4_ext_map_blocks, types: [MEMORY_SAFETY_BUG]
the chunk can be dropped
testing without sub-chunk 4/5
disabling configs for [memleak ubsan kasan locking atomic_sleep hang], they are not needed
testing commit c09fbcd31ae6d71e7c69545839bec92d8e15c13b gcc
compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8
kernel signature: 462c2ac9a1277284ae11c8c6cf4148dee012df4555bfaca22baeb5900121f4da
run #0: crashed: BUG: unable to handle kernel paging request in ext4_ext_map_blocks
run #1: crashed: BUG: unable to handle kernel paging request in ext4_ext_map_blocks
run #2: crashed: BUG: unable to handle kernel paging request in ext4_ext_map_blocks
run #3: crashed: BUG: unable to handle kernel paging request in ext4_ext_map_blocks
run #4: crashed: BUG: unable to handle kernel paging request in ext4_ext_map_blocks
run #5: OK
run #6: crashed: BUG: unable to handle kernel paging request in ext4_ext_map_blocks
run #7: OK
run #8: OK
run #9: crashed: BUG: unable to handle kernel paging request in ext4_ext_map_blocks
representative crash: BUG: unable to handle kernel paging request in ext4_ext_map_blocks, types: [MEMORY_SAFETY_BUG]
the chunk can be dropped
testing without sub-chunk 5/5
disabling configs for [ubsan kasan locking atomic_sleep hang memleak], they are not needed
testing commit c09fbcd31ae6d71e7c69545839bec92d8e15c13b gcc
compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8
kernel signature: e8535af940ebd3c511e4c7197e1728c2d64248d13d5a61bd0af9ef1f6ccc6f7c
all runs: crashed: BUG: unable to handle kernel paging request in ext4_ext_map_blocks
representative crash: BUG: unable to handle kernel paging request in ext4_ext_map_blocks, types: [MEMORY_SAFETY_BUG]
the chunk can be dropped
disabling configs for [atomic_sleep hang memleak ubsan kasan locking], they are not needed
determining the merge base between c09fbcd31ae6d71e7c69545839bec92d8e15c13b and 780d569e6c4b422290f5cba319eb904b355d64be
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 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8
kernel signature: d3689c70e013ea548ee0fd092dd06b427e562d6028af18914a4e18c9d4c7afa9
all runs: 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: 2h59m40.728758481s (build: 1h10m14.064517512s, test: 1h32m41.858585249s)
crash still not fixed or there were kernel test errors
commit msg: Linux 6.6