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bpf: Fix pointer cast warning

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kp->addr is a pointer, so it cannot be cast directly to a 'u64'
when it gets interpreted as an integer value:

kernel/trace/bpf_trace.c: In function '____bpf_get_func_ip_kprobe':
kernel/trace/bpf_trace.c:968:21: error: cast from pointer to integer of different size [-Werror=pointer-to-int-cast]
  968 |         return kp ? (u64) kp->addr : 0;

Use the uintptr_t type instead.

Fixes: 9ffd9f3ff7 ("bpf: Add bpf_get_func_ip helper for kprobe programs")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20210721212007.3876595-1-arnd@kernel.org
This commit is contained in:
Arnd Bergmann 2021-07-21 23:19:45 +02:00 committed by Andrii Nakryiko
parent 807b8f0e24
commit 16c5900ba7
1 changed files with 1 additions and 1 deletions
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2
kernel/trace/bpf_trace.c
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@ -965,7 +965,7 @@ BPF_CALL_1(bpf_get_func_ip_kprobe, struct pt_regs *, regs)
{
struct kprobe *kp = kprobe_running();
return kp ? (u64) kp->addr : 0;
return kp ? (uintptr_t)kp->addr : 0;
}
static const struct bpf_func_proto bpf_get_func_ip_proto_kprobe = {