2 Commits

Author	SHA1	Message	Date
Michael Petlan	6e801c9a78	perf bpf: 8 byte align bpil data ... Bugzilla: https://bugzilla.redhat.com/2123231 upstream ======== commit 579d6c6d77a7b55d74db8a506d5fc0c77fb1a5e1 Author: Ian Rogers <irogers@google.com> Date: Mon Jun 13 18:47:14 2022 -0700 description =========== bpil data is accessed assuming 64-bit alignment resulting in undefined behavior as the data is just byte aligned. With an -fsanitize=undefined build the following errors are observed: $ sudo perf record -a sleep 1 util/bpf-event.c:310:22: runtime error: load of misaligned address 0x55f61084520f for type '__u64', which requires 8 byte alignment 0x55f61084520f: note: pointer points here a8 fe ff ff 3c 51 d3 c0 ff ff ff ff 04 84 d3 c0 ff ff ff ff d8 aa d3 c0 ff ff ff ff a4 c0 d3 c0 ^ util/bpf-event.c:311:20: runtime error: load of misaligned address 0x55f61084522f for type '__u32', which requires 4 byte alignment 0x55f61084522f: note: pointer points here ff ff ff ff c7 17 00 00 f1 02 00 00 1f 04 00 00 58 04 00 00 00 00 00 00 0f 00 00 00 63 02 00 00 ^ util/bpf-event.c:198:33: runtime error: member access within misaligned address 0x55f61084523f for type 'const struct bpf_func_info', which requires 4 byte alignment 0x55f61084523f: note: pointer points here 58 04 00 00 00 00 00 00 0f 00 00 00 63 02 00 00 3b 00 00 00 ab 02 00 00 44 00 00 00 14 03 00 00 Correct this by rouding up the data sizes and aligning the pointers. Signed-off-by: Michael Petlan <mpetlan@redhat.com>	2022-09-21 07:23:14 +02:00
Michael Petlan	0d4b9186a3	perf bpf: Pull in bpf_program__get_prog_info_linear() ... Bugzilla: https://bugzilla.redhat.com/2069073 upstream ======== commit 6ac22d036f86c4e2d38bea1108672f947f7facca Author: Dave Marchevsky <davemarchevsky@fb.com> Date: Mon Oct 11 01:20:30 2021 -0700 description =========== To prepare for impending deprecation of libbpf's bpf_program__get_prog_info_linear(), pull in the function and associated helpers into the perf codebase and migrate existing uses to the perf copy. Since libbpf's deprecated definitions will still be visible to perf, it is necessary to rename perf's definitions. Signed-off-by: Michael Petlan <mpetlan@redhat.com>	2022-05-16 11:35:09 +02:00