ci2 starts bisection 2025-10-04 06:47:37.518930063 +0000 UTC m=+154139.159986061
bisecting fixing commit since f89b6e15694c1e24f78d889b29a54d46e5267413
building syzkaller on 3d2f584ddab119da50e8a8d26765aa98d3b33c02
ensuring issue is reproducible on original commit f89b6e15694c1e24f78d889b29a54d46e5267413

testing commit f89b6e15694c1e24f78d889b29a54d46e5267413 gcc
compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8
kernel signature: aa3bcfcaab127ea1fcee71a20636128c756dc10cec12bd2f08885fb923ce09d9
all runs: crashed: BUG: unable to handle kernel paging request in btrfs_lookup_csums_range
representative crash: BUG: unable to handle kernel paging request in btrfs_lookup_csums_range, types: [MEMORY_SAFETY_BUG]
check whether we can drop unnecessary instrumentation
disabling configs for [kasan locking atomic_sleep hang memleak ubsan], they are not needed
testing commit f89b6e15694c1e24f78d889b29a54d46e5267413 gcc
compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8
kernel signature: 22f90f1256eab0ecee764717be8fe6166abd9fa9a151cd11f1097a45d8b8bf4f
all runs: crashed: BUG: unable to handle kernel NULL pointer dereference in btrfs_lookup_csums_range
representative crash: BUG: unable to handle kernel NULL pointer dereference in btrfs_lookup_csums_range, types: [NULL-POINTER-DEREFERENCE]
the bug reproduces without the instrumentation
disabling configs for [hang memleak ubsan kasan locking atomic_sleep], they are not needed
kconfig minimization: base=7505 full=9721 leaves diff=1997
split chunks (needed=false): <1997>
split chunk #0 of len 1997 into 5 parts
testing without sub-chunk 1/5
disabling configs for [kasan locking atomic_sleep hang memleak ubsan], they are not needed
testing commit f89b6e15694c1e24f78d889b29a54d46e5267413 gcc
compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8
kernel signature: bf399f18995a8fc24c6cea67c0c88319dc2b348d56266c5c924d9f62ea553234
all runs: crashed: BUG: unable to handle kernel NULL pointer dereference in btrfs_lookup_csums_range
representative crash: BUG: unable to handle kernel NULL pointer dereference in btrfs_lookup_csums_range, types: [NULL-POINTER-DEREFERENCE]
the chunk can be dropped
testing without sub-chunk 2/5
disabling configs for [kasan locking atomic_sleep hang memleak ubsan], they are not needed
testing commit f89b6e15694c1e24f78d889b29a54d46e5267413 gcc
compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8
kernel signature: e51bb47f0c8c55a810523fbd9778ff48479af1ffde4d98cdea593d7c6d3a33d1
all runs: crashed: BUG: unable to handle kernel NULL pointer dereference in btrfs_lookup_csums_range
representative crash: BUG: unable to handle kernel NULL pointer dereference in btrfs_lookup_csums_range, types: [NULL-POINTER-DEREFERENCE]
the chunk can be dropped
testing without sub-chunk 3/5
disabling configs for [kasan locking atomic_sleep hang memleak ubsan], they are not needed
testing commit f89b6e15694c1e24f78d889b29a54d46e5267413 gcc
compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8
kernel signature: 5008533971a0bc4b08b2b14d7e7f95760b01534c5780c3a3b637c396a92f185b
all runs: crashed: BUG: unable to handle kernel NULL pointer dereference in btrfs_lookup_csums_range
representative crash: BUG: unable to handle kernel NULL pointer dereference in btrfs_lookup_csums_range, types: [NULL-POINTER-DEREFERENCE]
the chunk can be dropped
testing without sub-chunk 4/5
disabling configs for [locking atomic_sleep hang memleak ubsan kasan], they are not needed
testing commit f89b6e15694c1e24f78d889b29a54d46e5267413 gcc
compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8
kernel signature: dbb67210883d2c6723e5b94e672b8b5eec69defbdf6a9ca2e4fc897e7e2bbfa1
all runs: crashed: BUG: unable to handle kernel NULL pointer dereference in btrfs_lookup_csums_range
representative crash: BUG: unable to handle kernel NULL pointer dereference in btrfs_lookup_csums_range, types: [NULL-POINTER-DEREFERENCE]
the chunk can be dropped
testing without sub-chunk 5/5
disabling configs for [hang memleak ubsan kasan locking atomic_sleep], they are not needed
testing commit f89b6e15694c1e24f78d889b29a54d46e5267413 gcc
compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8
kernel signature: e38540ea1eaec858b32d6326cc7b352c072ff0ffef6813b1680c6cb118ed9441
all runs: crashed: BUG: unable to handle kernel NULL pointer dereference in btrfs_lookup_csums_range
representative crash: BUG: unable to handle kernel NULL pointer dereference in btrfs_lookup_csums_range, types: [NULL-POINTER-DEREFERENCE]
the chunk can be dropped
disabling configs for [kasan locking atomic_sleep hang memleak ubsan], they are not needed
determining the merge base between f89b6e15694c1e24f78d889b29a54d46e5267413 and cbf33b8e0b360f667b17106c15d9e2aac77a76a1
830b3c68c1fb1e9176028d02ef86f3cf76aa2476/Linux 6.1 is a merge base, check if it has the bug
testing commit 830b3c68c1fb1e9176028d02ef86f3cf76aa2476 gcc
compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8
kernel signature: 2d27d98ff31ffc80819c5bbca6b53dfc34bc4ef7e28aa6c3522e12e91b55f8f0
run #0: basic kernel testing failed: kernel BUG in page_table_check_set
run #1: basic kernel testing failed: kernel BUG in page_table_check_set
run #2: basic kernel testing failed: kernel BUG in page_table_check_set
run #3: basic kernel testing failed: kernel BUG in page_table_check_set
run #4: basic kernel testing failed: kernel BUG in page_table_check_set
run #5: basic kernel testing failed: kernel BUG in page_table_check_set
run #6: basic kernel testing failed: kernel BUG in page_table_check_set
run #7: basic kernel testing failed: kernel BUG in page_table_check_set
run #8: basic kernel testing failed: kernel BUG in page_table_check_set
run #9: basic kernel testing failed: failed to copy syz-execprog to VM: timedout after 1m0s ["scp" "-P" "22" "-F" "/dev/null" "-o" "UserKnownHostsFile=/dev/null" "-o" "IdentitiesOnly=yes" "-o" "BatchMode=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "-v" "/syzkaller/jobs/linux/gopath/src/github.com/google/syzkaller/bin/linux_arm64/syz-execprog" "root@10.128.1.224:./syz-execprog"]
unable to determine the verdict: 0 good runs (wanted 5), for bad wanted 5 in total, got 0
reproducer does not crash the merge base, so there's no known bad commit
revisions tested: 8, total time: 2h1m18.682234718s (build: 1h28m6.512481315s, test: 29m29.674165297s)
crash still not fixed or there were kernel test errors
commit msg: Linux 6.1