05-Oct-2026 10:18:40: building syzkaller on 523f460ebff983aabd0f441fbc60069cb96a56d1... 05-Oct-2026 10:18:57: fetching kernel... 05-Oct-2026 10:18:59: checked out kernel commit 6612ef9d0b09420469e261578372ab3cc9aa9cf1 ("UPSTREAM: Bluetooth: RFCOMM: serialize security confirmation handling", 2026-09-29 20:52:17 +0000 UTC) 05-Oct-2026 10:18:59: cleaning kernel... 05-Oct-2026 10:19:00: building kernel... 05-Oct-2026 10:22:14: kernel built successfully with compiler Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8 05-Oct-2026 10:22:14: testing patch... 05-Oct-2026 10:33:07: reproduced crash: kernel BUG in ext4_flex_group_add