12-Oct-2026 16:15:26: building syzkaller on fb427a0782000106c62de76d251e5a02de5406a9... 12-Oct-2026 16:15:35: fetching kernel... 12-Oct-2026 16:15:37: checked out kernel commit d6c8aee048e0871ae3942f60c655c146df22479d ("Merge 722980f27458 (\"mm/damon/tests/core-kunit: catch test failure in test_merge_regions_of()\") into android13-5.15-lts", 2026-10-06 20:11:38 +0000 UTC) 12-Oct-2026 16:15:37: cleaning kernel... 12-Oct-2026 16:15:38: building kernel... 12-Oct-2026 16:18:29: kernel built successfully with compiler Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8 12-Oct-2026 16:18:29: testing patch... 12-Oct-2026 16:25:37: reproduced crash: UBSAN: shift-out-of-bounds in ext4_fill_super