Messages in this thread Patch in this message | | | Date | Thu, 17 Aug 2023 09:58:53 -0600 | From | "Gustavo A. R. Silva" <> | Subject | [PATCH][next] net: sched: cls_u32: Fix allocation in u32_init() |
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Replace struct_size() with sizeof(), and avoid allocating 8 too many bytes.
The following difference in binary output is expected and reflects the desired change:
| net/sched/cls_u32.o | @@ -6148,7 +6148,7 @@ | include/linux/slab.h:599 | 2cf5: mov 0x0(%rip),%rdi # 2cfc <u32_init+0xfc> | 2cf8: R_X86_64_PC32 kmalloc_caches+0xc |- 2cfc: mov $0x98,%edx |+ 2cfc: mov $0x90,%edx
Fixes: d61491a51f7e ("net/sched: cls_u32: Replace one-element array with flexible-array member") Reported-by: Alejandro Colomar <alx@kernel.org> Closes: https://lore.kernel.org/lkml/09b4a2ce-da74-3a19-6961-67883f634d98@kernel.org/ Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org> --- net/sched/cls_u32.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/net/sched/cls_u32.c b/net/sched/cls_u32.c index da4c179a4d41..6663e971a13e 100644 --- a/net/sched/cls_u32.c +++ b/net/sched/cls_u32.c @@ -366,7 +366,7 @@ static int u32_init(struct tcf_proto *tp) idr_init(&root_ht->handle_idr); if (tp_c == NULL) { - tp_c = kzalloc(struct_size(tp_c, hlist->ht, 1), GFP_KERNEL); + tp_c = kzalloc(sizeof(*tp_c), GFP_KERNEL); if (tp_c == NULL) { kfree(root_ht); return -ENOBUFS; -- 2.34.1
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