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UPSTREAM: bpf: Remove unnecessary assertion on fp_old

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The two callers of bpf_prog_realloc - bpf_patch_insn_single and
bpf_migrate_filter dereference the struct fp_old, before passing
it to the function. Thus assertion to check fp_old is unnecessary
and can be removed.

Change-Id: Ia2dd6b17809db03fa2fc78e0da8211a383aeba3f
Signed-off-by: Aditya Pakki <pakki001@umn.edu>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Link: https://lore.kernel.org/bpf/20191219175735.19231-1-pakki001@umn.edu
This commit is contained in:
Aditya Pakki 2019-12-19 11:57:35 -06:00 • committed by basamaryan
commit 3cb857837c
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kernel/bpf/core.c
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@ -227,8 +227,6 @@ struct bpf_prog *bpf_prog_realloc(struct bpf_prog *fp_old, unsigned int size,
u32 pages, delta;
int ret;
BUG_ON(fp_old == NULL);
size = round_up(size, PAGE_SIZE);
pages = size / PAGE_SIZE;
if (pages <= fp_old->pages)