20-Sep-2026 20:30:03: building syzkaller on 4b1d8f01c9e0cf11ef8c62237b340925f957cd82...
20-Sep-2026 20:30:25: fetching kernel...
20-Sep-2026 20:30:28: checked out kernel commit 5bfe2b8c1439354d25dc5b1779cd0bb75bb90a7f ("Revert \"mmc: sdhci: make tuning_err a signed int\"", 2026-09-11 15:56:56 +0000 UTC)
20-Sep-2026 20:30:28: cleaning kernel...
20-Sep-2026 20:30:28: building kernel...
20-Sep-2026 20:33:21: kernel built successfully with compiler Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8
20-Sep-2026 20:33:21: testing patch...
20-Sep-2026 20:43:59: reproduced crash: KASAN: null-ptr-deref Write in f2fs_stop_gc_thread