02-Sep-2026 12:20:46: attempting to guess the base commit by blob hashes 02-Sep-2026 12:20:49: extracted 1 left blob hashes 02-Sep-2026 12:47:47: considering "29b3467b8672b5517362e8353a6ff328fc6501dc" [map["linux-next/master":{} "origin/linux-next/master":{}]] 02-Sep-2026 12:47:47: hashes match, commit date is 2026-09-01 15:07:40 +0100 +0100, branches [linux-next/master origin/linux-next/master] 02-Sep-2026 12:47:47: considering "8b72f6626dc39b9e7e82b2721d4f7c3b86286012" [map["linux-next/master":{} "origin/linux-next/master":{}]] 02-Sep-2026 12:47:49: hashes match, commit date is 2026-09-01 16:39:49 +0100 +0100, branches [linux-next/master origin/linux-next/master] 02-Sep-2026 12:47:49: considering "995d3b6bae395501731af5912cc076cf9aa60b76" [map["linux-next/master":{} "origin/linux-next/master":{}]] 02-Sep-2026 12:47:49: hashes don't match for ["fs/buffer.c"] 02-Sep-2026 12:47:49: considering "e02cb91d4644dfff593146f89e70d2008cc6ac16" [map["linux-next/master":{} "origin/linux-next/master":{}]] 02-Sep-2026 12:47:49: hashes don't match for ["fs/buffer.c"] 02-Sep-2026 12:47:49: continuing with 8b72f6626dc39b9e7e82b2721d4f7c3b86286012 in linux-next 02-Sep-2026 12:47:49: checking out "8b72f6626dc39b9e7e82b2721d4f7c3b86286012" in "linux-next" 02-Sep-2026 12:47:50: applying 1 patches 02-Sep-2026 12:48:13: starting AI patch evaluation... 02-Sep-2026 12:51:49: AI verdict: WorthFuzzing=true (Reason: The patch adds a NULL check for `bh->b_folio` before calling `folio_test_dropbehind(bh->b_folio)` in `__bh_submit()`. Buffer heads allocated for non-pagecache data (such as JBD2 shadow/frozen metadata buffers) do not have an associated folio and previously triggered a NULL pointer dereference during submission. This is core filesystem buffer cache logic reachable in standard virtualized environments.)