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| author | Jiri Olsa <jolsa@kernel.org> | 2022-03-30 13:05:10 +0200 |
|---|---|---|
| committer | Daniel Borkmann <daniel@iogearbox.net> | 2022-03-30 14:10:06 +0200 |
| commit | d31e0386a2f122b40b605eb0120a2fbcfca77868 (patch) | |
| tree | 68ad715185511835f278299583f9bb6b35ffb89e /kernel | |
| parent | 522574fd7864e091d473765102e866414979b2ab (diff) | |
| download | linux-d31e0386a2f122b40b605eb0120a2fbcfca77868.tar.bz2 | |
bpf: Fix sparse warnings in kprobe_multi_resolve_syms
Adding missing __user tags to fix sparse warnings:
kernel/trace/bpf_trace.c:2370:34: warning: incorrect type in argument 2 (different address spaces)
kernel/trace/bpf_trace.c:2370:34: expected void const [noderef] __user *from
kernel/trace/bpf_trace.c:2370:34: got void const *usyms
kernel/trace/bpf_trace.c:2376:51: warning: incorrect type in argument 2 (different address spaces)
kernel/trace/bpf_trace.c:2376:51: expected char const [noderef] __user *src
kernel/trace/bpf_trace.c:2376:51: got char const *
kernel/trace/bpf_trace.c:2443:49: warning: incorrect type in argument 1 (different address spaces)
kernel/trace/bpf_trace.c:2443:49: expected void const *usyms
kernel/trace/bpf_trace.c:2443:49: got void [noderef] __user *[assigned] usyms
Fixes: 0dcac2725406 ("bpf: Add multi kprobe link")
Reported-by: Alexei Starovoitov <ast@kernel.org>
Reported-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Link: https://lore.kernel.org/bpf/20220330110510.398558-1-jolsa@kernel.org
Diffstat (limited to 'kernel')
| -rw-r--r-- | kernel/trace/bpf_trace.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/kernel/trace/bpf_trace.c b/kernel/trace/bpf_trace.c index 7fa2ebc07f60..d8553f46caa2 100644 --- a/kernel/trace/bpf_trace.c +++ b/kernel/trace/bpf_trace.c @@ -2349,11 +2349,11 @@ kprobe_multi_link_handler(struct fprobe *fp, unsigned long entry_ip, } static int -kprobe_multi_resolve_syms(const void *usyms, u32 cnt, +kprobe_multi_resolve_syms(const void __user *usyms, u32 cnt, unsigned long *addrs) { unsigned long addr, size; - const char **syms; + const char __user **syms; int err = -ENOMEM; unsigned int i; char *func; |