Hi, v2: change the implementation as Vlastimil suggested v1: https://lore.kernel.org/all/20250122074817.991060-1-gongruiqi1@xxxxxxxxxx/ Tamás reported [1] that kmalloc cache randomization doesn't actually work for those kmalloc invoked via kvmalloc. For more details, see the commit log of patch 2. The current solution requires a direct call from __kvmalloc_node_noprof to __do_kmalloc_node, a static function in a different .c file. Comparing to v1, this version achieves this by simply moving __kvmalloc_node_noprof to mm/slub.c, as suggested by Vlastimil [2]. Link: https://github.com/google/security-research/pull/83/files#diff-1604319b55a48c39a210ee52034ed7ff5b9cdc3d704d2d9e34eb230d19fae235R200 [1] Link: https://lore.kernel.org/all/62044279-0c56-4185-97f7-7afac65ff449@xxxxxxx/ [2] GONG Ruiqi (2): slab: Adjust placement of __kvmalloc_node_noprof slab: Achieve better kmalloc caches randomization in kvmalloc include/linux/slab.h | 22 +++++++++ mm/slub.c | 90 ++++++++++++++++++++++++++++++++++ mm/util.c | 112 ------------------------------------------- 3 files changed, 112 insertions(+), 112 deletions(-) -- 2.25.1
