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charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-OriginatorOrg: fb.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-AuthSource: SJ0PR15MB5154.namprd15.prod.outlook.com X-MS-Exchange-CrossTenant-Network-Message-Id: 8c8a0781-aad4-42ff-a8ae-08da2937ae59 X-MS-Exchange-CrossTenant-originalarrivaltime: 28 Apr 2022 16:53:55.1085 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 8ae927fe-1255-47a7-a2af-5f3a069daaa2 X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-CrossTenant-userprincipalname: Sr7UQMZRdq7D2ynlD96UjSWcjyGhQPH5ZyQJxXigl0/deJpfryQ3txQmcxPeif9m X-MS-Exchange-Transport-CrossTenantHeadersStamped: SJ0PR15MB4615 X-Proofpoint-GUID: L4cXZK5rmAoaocwxY_tgn1XKEnmhgiQi X-Proofpoint-ORIG-GUID: L4cXZK5rmAoaocwxY_tgn1XKEnmhgiQi X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.205,Aquarius:18.0.858,Hydra:6.0.486,FMLib:17.11.64.514 definitions=2022-04-28_02,2022-04-28_01,2022-02-23_01 Precedence: bulk List-ID: X-Mailing-List: bpf@vger.kernel.org Add section mappings for uprobe.s and kprobe.s programs. The latter cannot currently attach but they're still useful to open and load in order to validate that prohibition. Signed-off-by: Delyan Kratunov --- tools/lib/bpf/libbpf.c | 10 +++++++++- 1 file changed, 9 insertions(+), 1 deletion(-) diff --git a/tools/lib/bpf/libbpf.c b/tools/lib/bpf/libbpf.c index 9a213aaaac8a..9e89a478d40e 100644 --- a/tools/lib/bpf/libbpf.c +++ b/tools/lib/bpf/libbpf.c @@ -8692,9 +8692,12 @@ static const struct bpf_sec_def section_defs[] =3D { SEC_DEF("sk_reuseport/migrate", SK_REUSEPORT, BPF_SK_REUSEPORT_SELECT_OR_= MIGRATE, SEC_ATTACHABLE | SEC_SLOPPY_PFX), SEC_DEF("sk_reuseport", SK_REUSEPORT, BPF_SK_REUSEPORT_SELECT, SEC_ATTAC= HABLE | SEC_SLOPPY_PFX), SEC_DEF("kprobe/", KPROBE, 0, SEC_NONE, attach_kprobe), + SEC_DEF("kprobe.s/", KPROBE, 0, SEC_SLEEPABLE, attach_kprobe), SEC_DEF("uprobe+", KPROBE, 0, SEC_NONE, attach_uprobe), + SEC_DEF("uprobe.s+", KPROBE, 0, SEC_SLEEPABLE, attach_uprobe), SEC_DEF("kretprobe/", KPROBE, 0, SEC_NONE, attach_kprobe), SEC_DEF("uretprobe+", KPROBE, 0, SEC_NONE, attach_uprobe), + SEC_DEF("uretprobe.s+", KPROBE, 0, SEC_SLEEPABLE, attach_uprobe), SEC_DEF("kprobe.multi/", KPROBE, BPF_TRACE_KPROBE_MULTI, SEC_NONE, attach= _kprobe_multi), SEC_DEF("kretprobe.multi/", KPROBE, BPF_TRACE_KPROBE_MULTI, SEC_NONE, att= ach_kprobe_multi), SEC_DEF("usdt+", KPROBE, 0, SEC_NONE, attach_usdt), @@ -10432,13 +10435,18 @@ static int attach_kprobe(const struct bpf_program= *prog, long cookie, struct bpf const char *func_name; char *func; int n; + bool sleepable =3D false; =20 opts.retprobe =3D str_has_pfx(prog->sec_name, "kretprobe/"); + sleepable =3D str_has_pfx(prog->sec_name, "kprobe.s/"); if (opts.retprobe) func_name =3D prog->sec_name + sizeof("kretprobe/") - 1; + else if (sleepable) + func_name =3D prog->sec_name + sizeof("kprobe.s/") - 1; else func_name =3D prog->sec_name + sizeof("kprobe/") - 1; =20 + n =3D sscanf(func_name, "%m[a-zA-Z0-9_.]+%li", &func, &offset); if (n < 1) { pr_warn("kprobe name is invalid: %s\n", func_name); @@ -10957,7 +10965,7 @@ static int attach_uprobe(const struct bpf_program *= prog, long cookie, struct bpf break; case 3: case 4: - opts.retprobe =3D strcmp(probe_type, "uretprobe") =3D=3D 0; + opts.retprobe =3D str_has_pfx(probe_type, "uretprobe"); if (opts.retprobe && offset !=3D 0) { pr_warn("prog '%s': uretprobes do not support offset specification\n", prog->name); --=20 2.35.1