06-Oct-2026 18:01:00: building syzkaller on 4c3406dcb7532a40c27b01ca073cca0025fefd2c... 06-Oct-2026 18:01:43: fetching kernel... 06-Oct-2026 18:01:45: checked out kernel commit a051a4bf909f76f470ccb3761ee0cf6e2395616e ("Linux 5.15.222", 2026-10-03 12:26:49 +0200 +0200) 06-Oct-2026 18:01:45: cleaning kernel... 06-Oct-2026 18:01:46: building kernel... 06-Oct-2026 18:07:35: kernel built successfully with compiler Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8 06-Oct-2026 18:07:35: testing patch... 06-Oct-2026 18:15:13: reproduced crash: KASAN: use-after-free Read in ax25_fillin_cb