13-Oct-2026 08:50:49: building syzkaller on 32a0e5edfeef60e894c453dc9e9ae45528626ef1... 13-Oct-2026 08:59:37: fetching kernel... 13-Oct-2026 08:59:39: checked out kernel commit a051a4bf909f76f470ccb3761ee0cf6e2395616e ("Linux 5.15.222", 2026-10-03 12:26:49 +0200 +0200) 13-Oct-2026 08:59:39: cleaning kernel... 13-Oct-2026 08:59:40: building kernel... 13-Oct-2026 09:05:57: kernel built successfully with compiler Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8 13-Oct-2026 09:05:57: testing patch... 13-Oct-2026 09:19:10: reproduced crash: WARNING in ext4_iomap_begin