media-libs/mesa: Add patch to prevent fossil_db problems

Signed-off-by: Matt Turner <mattst88@gentoo.org>

1 files changed, 46 insertions, 0 deletions

diff --git a/media-libs/mesa/files/21.1.8-util-fossilize_db-Don-t-corrupt-keys-during-entry-re.patch b/media-libs/mesa/files/21.1.8-util-fossilize_db-Don-t-corrupt-keys-during-entry-re.patch
new file mode 100644
index 000000000000..ebbb8abb1fe5
--- /dev/null
+++ b/media-libs/mesa/files/21.1.8-util-fossilize_db-Don-t-corrupt-keys-during-entry-re.patch
@@ -0,0 +1,46 @@
+From 8de60a1654a875d0b55512a1508f541f706f9b97 Mon Sep 17 00:00:00 2001
+From: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
+Date: Sat, 4 Sep 2021 03:32:21 +0200
+Subject: [PATCH] util/fossilize_db: Don't corrupt keys during entry read.
+
+We change the hash that is still used to set entry->key.
+
+Fixes: d2d642cc014 "util/fossilize_db: Only allocate entries after full read."
+Reviewed-by: Timothy Arceri <tarceri@itsqueeze.com>
+Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/12725>
+---
+ src/util/fossilize_db.c | 12 ++++++------
+ 1 file changed, 6 insertions(+), 6 deletions(-)
+
+diff --git a/src/util/fossilize_db.c b/src/util/fossilize_db.c
+index e1709a1ff64..26024101b83 100644
+--- a/src/util/fossilize_db.c
++++ b/src/util/fossilize_db.c
+@@ -156,18 +156,18 @@ update_foz_index(struct foz_db *foz_db, FILE *db_idx, unsigned file_idx)
+       offset += header->payload_size;
+       parsed_offset = offset;
+ 
+-      /* Truncate the entry's hash string to a 64bit hash for use with a
+-       * 64bit hash table for looking up file offsets.
+-       */
+-      hash_str[16] = '\0';
+-      uint64_t key = strtoull(hash_str, NULL, 16);
+-
+       struct foz_db_entry *entry = ralloc(foz_db->mem_ctx,
+                                           struct foz_db_entry);
+       entry->header = *header;
+       entry->file_idx = file_idx;
+       _mesa_sha1_hex_to_sha1(entry->key, hash_str);
+ 
++      /* Truncate the entry's hash string to a 64bit hash for use with a
++       * 64bit hash table for looking up file offsets.
++       */
++      hash_str[16] = '\0';
++      uint64_t key = strtoull(hash_str, NULL, 16);
++
+       entry->offset = cache_offset;
+ 
+       _mesa_hash_table_u64_insert(foz_db->index_db, key, entry);
+-- 
+2.32.0
+