01-Nov-2026 08:00:07: building syzkaller on 03fcfc4b7385b545a89a3fc62bef4e1ec7532e0d... 01-Nov-2026 08:00:22: fetching kernel... 01-Nov-2026 08:00:25: checked out kernel commit 743bbe988cbf437bf21df07d13d4ffeaae7e3fde ("UPSTREAM: blk-crypto: fix NULL deref and UAF in __blk_crypto_evict_key()", 2026-10-31 10:31:44 -0700 -0700) 01-Nov-2026 08:00:25: cleaning kernel... 01-Nov-2026 08:00:26: building kernel... 01-Nov-2026 08:03:38: kernel built successfully with compiler Debian clang version 22.1.8 (1~deb13u4), Debian LLD 22.1.8 01-Nov-2026 08:03:38: testing patch... 01-Nov-2026 08:09:12: reproduced crash: KASAN: null-ptr-deref Write in f2fs_stop_gc_thread