05-Oct-2026 17:30:36: building syzkaller on d6526ea3e6ad9081c902859bbb80f9f840377cb4... 05-Oct-2026 17:32:07: fetching kernel... 05-Oct-2026 17:32:09: checked out kernel commit 42d4fb705937c00081152d399970aa85a77462d5 ("Revert \"espintcp: remove encap socket caching to avoid reference leak\"", 2026-10-04 05:27:57 +0000 UTC) 05-Oct-2026 17:32:09: cleaning kernel... 05-Oct-2026 17:32:11: building kernel... 05-Oct-2026 17:34:53: 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 17:34:53: testing patch... 05-Oct-2026 17:43:21: reproduced crash: BUG: unable to handle kernel NULL pointer dereference in __lookup_slow