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header-fix.patch
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From 99eac339a6c59c12830e9ea3596e13338aaa7e4d Mon Sep 17 00:00:00 2001
From: Zi Shen Lim <[email protected]>
Date: Wed, 8 Jun 2016 21:18:47 +0000
Subject: [PATCH] bpf: fix missing header inclusion
Commit 0fc174d ("ebpf: make internal bpf API independent of
CONFIG_BPF_SYSCALL ifdefs") introduced usage of ERR_PTR() in
bpf_prog_get(), however did not include linux/err.h.
Without this patch, when compiling arm64 BPF without CONFIG_BPF_SYSCALL:
...
In file included from arch/arm64/net/bpf_jit_comp.c:21:0:
include/linux/bpf.h: In function 'bpf_prog_get':
include/linux/bpf.h:235:9: error: implicit declaration of function 'ERR_PTR' [-Werror=implicit-function-declaration]
return ERR_PTR(-EOPNOTSUPP);
^
include/linux/bpf.h:235:9: warning: return makes pointer from integer without a cast [-Wint-conversion]
In file included from include/linux/rwsem.h:17:0,
from include/linux/mm_types.h:10,
from include/linux/sched.h:27,
from arch/arm64/include/asm/compat.h:25,
from arch/arm64/include/asm/stat.h:23,
from include/linux/stat.h:5,
from include/linux/compat.h:12,
from include/linux/filter.h:10,
from arch/arm64/net/bpf_jit_comp.c:22:
include/linux/err.h: At top level:
include/linux/err.h:23:35: error: conflicting types for 'ERR_PTR'
static inline void * __must_check ERR_PTR(long error)
^
In file included from arch/arm64/net/bpf_jit_comp.c:21:0:
include/linux/bpf.h:235:9: note: previous implicit declaration of 'ERR_PTR' was here
return ERR_PTR(-EOPNOTSUPP);
^
...
Fixes: 0fc174d ("ebpf: make internal bpf API independent of CONFIG_BPF_SYSCALL ifdefs")
Suggested-by: Daniel Borkmann <[email protected]>
Signed-off-by: Zi Shen Lim <[email protected]>
Acked-by: Daniel Borkmann <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
---
include/linux/bpf.h | 1 +
1 file changed, 1 insertion(+)
diff --git a/include/linux/bpf.h b/include/linux/bpf.h
index 438efe7ed053..a56e4cb814cf 100644
--- a/include/linux/bpf.h
+++ b/include/linux/bpf.h
@@ -11,6 +11,7 @@
#include <linux/workqueue.h>
#include <linux/file.h>
#include <linux/percpu.h>
+#include <linux/err.h>
struct perf_event;
struct bpf_map;