diff mbox series

[RFC,bpf-next,4/8] bpf: Always expose the probed address

Message ID 20230528142027.5585-5-laoar.shao@gmail.com (mailing list archive)
State RFC
Delegated to: BPF
Headers show
Series bpf: Support ->show_fdinfo and ->fill_link_info for kprobe prog | expand

Checks

Context Check Description
bpf/vmtest-bpf-next-PR fail PR summary
bpf/vmtest-bpf-next-VM_Test-1 success Logs for ${{ matrix.test }} on ${{ matrix.arch }} with ${{ matrix.toolchain_full }}
bpf/vmtest-bpf-next-VM_Test-2 success Logs for ShellCheck
bpf/vmtest-bpf-next-VM_Test-3 fail Logs for build for aarch64 with gcc
bpf/vmtest-bpf-next-VM_Test-4 fail Logs for build for s390x with gcc
bpf/vmtest-bpf-next-VM_Test-5 fail Logs for build for x86_64 with gcc
bpf/vmtest-bpf-next-VM_Test-6 fail Logs for build for x86_64 with llvm-16
bpf/vmtest-bpf-next-VM_Test-7 success Logs for set-matrix
bpf/vmtest-bpf-next-VM_Test-8 success Logs for veristat
netdev/series_format success Posting correctly formatted
netdev/tree_selection success Clearly marked for bpf-next, async
netdev/fixes_present success Fixes tag not required for -next series
netdev/header_inline success No static functions without inline keyword in header files
netdev/build_32bit success Errors and warnings before: 12 this patch: 12
netdev/cc_maintainers fail 3 maintainers not CCed: mhiramat@kernel.org linux-trace-kernel@vger.kernel.org rostedt@goodmis.org
netdev/build_clang success Errors and warnings before: 10 this patch: 10
netdev/verify_signedoff success Signed-off-by tag matches author and committer
netdev/deprecated_api success None detected
netdev/check_selftest success No net selftest shell script
netdev/verify_fixes success No Fixes tag
netdev/build_allmodconfig_warn success Errors and warnings before: 12 this patch: 12
netdev/checkpatch success total: 0 errors, 0 warnings, 0 checks, 8 lines checked
netdev/kdoc success Errors and warnings before: 2 this patch: 2
netdev/source_inline success Was 0 now: 0

Commit Message

Yafang Shao May 28, 2023, 2:20 p.m. UTC 
Since different symbols can share the same name, it is insufficient to only
expose the symbol name. It is essential to also expose the symbol address
so that users can accurately identify which one is being probed.

Signed-off-by: Yafang Shao <laoar.shao@gmail.com>
---
 kernel/trace/trace_kprobe.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/kernel/trace/trace_kprobe.c b/kernel/trace/trace_kprobe.c
index 59cda19..a7a905a 100644
--- a/kernel/trace/trace_kprobe.c
+++ b/kernel/trace/trace_kprobe.c
@@ -1547,7 +1547,7 @@  int bpf_get_kprobe_info(const struct perf_event *event, u32 *fd_type,
 	if (tk->symbol) {
 		*symbol = tk->symbol;
 		*probe_offset = tk->rp.kp.offset;
-		*probe_addr = 0;
+		*probe_addr = (unsigned long)tk->rp.kp.addr;
 	} else {
 		*symbol = NULL;
 		*probe_offset = 0;