22-Oct-2026 05:41:53: building syzkaller on 853b104bb454141a5b0fc0e4218ec78e9f34ffb1... 22-Oct-2026 05:42:59: fetching kernel... 22-Oct-2026 05:43:01: checked out kernel commit 792fbe1537d8daeca9bd1917e84078b5432aadc2 ("Linux 5.15.223", 2026-10-15 14:14:32 +0200 +0200) 22-Oct-2026 05:43:01: cleaning kernel... 22-Oct-2026 05:43:02: building kernel... 22-Oct-2026 05:49:14: kernel built successfully with compiler Debian clang version 22.1.8 (1~deb13u4), Debian LLD 22.1.8 22-Oct-2026 05:49:14: testing patch... 22-Oct-2026 06:05:35: reproduced crash: INFO: task hung in nfsd_umount