31-Aug-2026 13:35:17: building syzkaller on 0d1223f1dc0faefcf010d6ee3e5a1e9571a1ad1a... 31-Aug-2026 13:37:08: fetching kernel... 31-Aug-2026 13:37:11: checked out kernel commit 28c35638ec51efdaa30089020b2abf7608898cb3 ("Linux 5.15.219", 2026-08-28 08:20:31 +0200 +0200) 31-Aug-2026 13:37:11: cleaning kernel... 31-Aug-2026 13:37:11: building kernel... 31-Aug-2026 13:44:04: kernel built successfully with compiler Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8 31-Aug-2026 13:44:04: testing patch... 31-Aug-2026 13:49:26: reproduced crash: WARNING: bad unlock balance in l2cap_recv_frame