mirror of https://github.com/OpenIPC/firmware.git
23 lines
667 B
Diff
23 lines
667 B
Diff
diff -drupN a/kernel/bpf/stackmap.c b/kernel/bpf/stackmap.c
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--- a/kernel/bpf/stackmap.c 2018-08-06 17:23:04.000000000 +0300
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+++ b/kernel/bpf/stackmap.c 2022-06-12 05:28:14.000000000 +0300
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@@ -11,6 +11,9 @@
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#include <linux/perf_event.h>
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#include "percpu_freelist.h"
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+#define STACK_CREATE_FLAG_MASK \
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+ (BPF_F_RDONLY | BPF_F_WRONLY)
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+
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struct stack_map_bucket {
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struct pcpu_freelist_node fnode;
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u32 hash;
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@@ -59,7 +62,7 @@ static struct bpf_map *stack_map_alloc(u
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if (!capable(CAP_SYS_ADMIN))
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return ERR_PTR(-EPERM);
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- if (attr->map_flags)
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+ if (attr->map_flags & ~STACK_CREATE_FLAG_MASK)
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return ERR_PTR(-EINVAL);
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/* check sanity of attributes */
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