ASAN freaks out when threads access foreign stack

NikitaSmith057 · NikitaSmith057 · commit dbc576519fdf · 2026-03-18T17:28:02.000-07:00
diff --git a/src/rdi_make/rdi_make_local.c b/src/rdi_make/rdi_make_local.c
@@ -945,8 +945,7 @@ rdim_bake(Arena *arena, RDIM_BakeParams *params)
     //- rjf: wide bake
     ProfScope("wide bake") 
     {
-      U64 line_table_block_take_counter_ = 0;
-      U64 *line_table_block_take_counter = &line_table_block_take_counter_;
+      U64 *line_table_block_take_counter = push_array(scratch.arena, U64, 1);
       lane_sync_u64(&line_table_block_take_counter, 0);
       U64 line_table_block_size = 4096;
       U64 line_table_block_count = (line_tables_count + line_table_block_size - 1) / line_table_block_size;
@@ -2096,8 +2095,7 @@ rdim_bake(Arena *arena, RDIM_BakeParams *params)
   RDIM_SortKey **bake_src_line_map_keys = 0;
   ProfScope("sort line-bucketed src line map data")
   {
-    U64 map_take_idx_ = 0;
-    U64 *map_take_idx = &map_take_idx_;
+    U64 *map_take_idx = push_array(scratch.arena, U64, 1);
     U64 map_count = params->src_files.total_count;
     if(lane_idx() == 0)
     {

Original file line number	Diff line number	Diff line change
`@@ -945,8 +945,7 @@ rdim_bake(Arena arena, RDIM_BakeParams params)`
`945`	`945`	`//- rjf: wide bake`
`946`	`946`	`ProfScope("wide bake")`
`947`	`947`	`{`
`948`		`- U64 line_table_block_take_counter_ = 0;`
`949`		`- U64 *line_table_block_take_counter = &line_table_block_take_counter_;`
	`948`	`+ U64 *line_table_block_take_counter = push_array(scratch.arena, U64, 1);`
`950`	`949`	`lane_sync_u64(&line_table_block_take_counter, 0);`
`951`	`950`	`U64 line_table_block_size = 4096;`
`952`	`951`	`U64 line_table_block_count = (line_tables_count + line_table_block_size - 1) / line_table_block_size;`
`@@ -2096,8 +2095,7 @@ rdim_bake(Arena arena, RDIM_BakeParams params)`
`2096`	`2095`	`RDIM_SortKey **bake_src_line_map_keys = 0;`
`2097`	`2096`	`ProfScope("sort line-bucketed src line map data")`
`2098`	`2097`	`{`
`2099`		`- U64 map_take_idx_ = 0;`
`2100`		`- U64 *map_take_idx = &map_take_idx_;`
	`2098`	`+ U64 *map_take_idx = push_array(scratch.arena, U64, 1);`
`2101`	`2099`	`U64 map_count = params->src_files.total_count;`
`2102`	`2100`	`if(lane_idx() == 0)`
`2103`	`2101`	`{`