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-rw-r--r--arch/x86/net/bpf_jit_comp.c18
1 files changed, 13 insertions, 5 deletions
diff --git a/arch/x86/net/bpf_jit_comp.c b/arch/x86/net/bpf_jit_comp.c
index 79c216aa0e2b..516593e1ce33 100644
--- a/arch/x86/net/bpf_jit_comp.c
+++ b/arch/x86/net/bpf_jit_comp.c
@@ -772,13 +772,21 @@ out:
772 return; 772 return;
773} 773}
774 774
775static void bpf_jit_free_deferred(struct work_struct *work)
776{
777 struct sk_filter *fp = container_of(work, struct sk_filter, work);
778 unsigned long addr = (unsigned long)fp->bpf_func & PAGE_MASK;
779 struct bpf_binary_header *header = (void *)addr;
780
781 set_memory_rw(addr, header->pages);
782 module_free(NULL, header);
783 kfree(fp);
784}
785
775void bpf_jit_free(struct sk_filter *fp) 786void bpf_jit_free(struct sk_filter *fp)
776{ 787{
777 if (fp->bpf_func != sk_run_filter) { 788 if (fp->bpf_func != sk_run_filter) {
778 unsigned long addr = (unsigned long)fp->bpf_func & PAGE_MASK; 789 INIT_WORK(&fp->work, bpf_jit_free_deferred);
779 struct bpf_binary_header *header = (void *)addr; 790 schedule_work(&fp->work);
780
781 set_memory_rw(addr, header->pages);
782 module_free(NULL, header);
783 } 791 }
784} 792}