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bpf: sync pending IRQ work before freeing ring buffer #10050

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bpf: sync pending IRQ work before freeing ring buffer #10050

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2 changes: 2 additions & 0 deletions kernel/bpf/ringbuf.c
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Original file line number Diff line number Diff line change
Expand Up @@ -216,6 +216,8 @@ static struct bpf_map *ringbuf_map_alloc(union bpf_attr *attr)

static void bpf_ringbuf_free(struct bpf_ringbuf *rb)
{
irq_work_sync(&rb->work);

/* copy pages pointer and nr_pages to local variable, as we are going
* to unmap rb itself with vunmap() below
*/
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