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GET /api/1.2/patches/2222435/?format=api
{ "id": 2222435, "url": "http://patchwork.ozlabs.org/api/1.2/patches/2222435/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linuxppc-dev/patch/20260411221413.44304-4-adubey@linux.ibm.com/", "project": { "id": 2, "url": "http://patchwork.ozlabs.org/api/1.2/projects/2/?format=api", "name": "Linux PPC development", "link_name": "linuxppc-dev", "list_id": "linuxppc-dev.lists.ozlabs.org", "list_email": "linuxppc-dev@lists.ozlabs.org", "web_url": "https://github.com/linuxppc/wiki/wiki", "scm_url": "https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git", "webscm_url": "https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git/", "list_archive_url": "https://lore.kernel.org/linuxppc-dev/", "list_archive_url_format": "https://lore.kernel.org/linuxppc-dev/{}/", "commit_url_format": "https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git/commit/?id={}" }, "msgid": "<20260411221413.44304-4-adubey@linux.ibm.com>", "list_archive_url": "https://lore.kernel.org/linuxppc-dev/20260411221413.44304-4-adubey@linux.ibm.com/", "date": "2026-04-11T22:14:11", "name": "[v3,3/5] selftest/bpf: Fixing powerpc JIT disassembly failure", "commit_ref": null, "pull_url": null, "state": "new", "archived": false, "hash": "a8e0ec09391b4ab3db9e9f9cacd3e247c3733497", "submitter": { "id": 88541, "url": "http://patchwork.ozlabs.org/api/1.2/people/88541/?format=api", "name": "adubey", "email": "adubey@linux.ibm.com" }, "delegate": null, "mbox": "http://patchwork.ozlabs.org/project/linuxppc-dev/patch/20260411221413.44304-4-adubey@linux.ibm.com/mbox/", "series": [ { "id": 499569, "url": "http://patchwork.ozlabs.org/api/1.2/series/499569/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linuxppc-dev/list/?series=499569", "date": "2026-04-11T22:14:08", "name": "powerpc/bpf: Add support for verifier selftest", "version": 3, "mbox": "http://patchwork.ozlabs.org/series/499569/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/patches/2222435/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/2222435/checks/", "tags": {}, "related": [], "headers": { "Return-Path": "\n <linuxppc-dev+bounces-19651-incoming=patchwork.ozlabs.org@lists.ozlabs.org>", "X-Original-To": [ "incoming@patchwork.ozlabs.org", "linuxppc-dev@lists.ozlabs.org" ], "Delivered-To": "patchwork-incoming@legolas.ozlabs.org", "Authentication-Results": [ "legolas.ozlabs.org;\n\tdkim=pass (2048-bit key;\n unprotected) header.d=ibm.com header.i=@ibm.com header.a=rsa-sha256\n header.s=pp1 header.b=bPL5bTHt;\n\tdkim-atps=neutral", "legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=lists.ozlabs.org\n (client-ip=2404:9400:21b9:f100::1; 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Prevent the disassembler from\ningesting this memory address, as it may occasionally decode\ninto a seemingly valid but incorrect instruction. Fix this\nissue by truncating the last 8 bytes from JITed buffers\nbefore supplying them for disassembly.\n\nSigned-off-by: Abhishek Dubey <adubey@linux.ibm.com>\n---\n tools/testing/selftests/bpf/jit_disasm_helpers.c | 13 ++++++++++++-\n 1 file changed, 12 insertions(+), 1 deletion(-)", "diff": "diff --git a/tools/testing/selftests/bpf/jit_disasm_helpers.c b/tools/testing/selftests/bpf/jit_disasm_helpers.c\nindex 364c557c5115..4c6bcbe08491 100644\n--- a/tools/testing/selftests/bpf/jit_disasm_helpers.c\n+++ b/tools/testing/selftests/bpf/jit_disasm_helpers.c\n@@ -170,9 +170,11 @@ int get_jited_program_text(int fd, char *text, size_t text_sz)\n \tstruct bpf_prog_info info = {};\n \t__u32 info_len = sizeof(info);\n \t__u32 jited_funcs, len, pc;\n+\t__u32 trunc_len = 0;\n \t__u32 *func_lens = NULL;\n \tFILE *text_out = NULL;\n \tuint8_t *image = NULL;\n+\tchar *triple = NULL;\n \tint i, err = 0;\n \n \tif (!llvm_initialized) {\n@@ -216,9 +218,18 @@ int get_jited_program_text(int fd, char *text, size_t text_sz)\n \tif (!ASSERT_OK(err, \"bpf_prog_get_info_by_fd #2\"))\n \t\tgoto out;\n \n+\t/*\n+\t * last 8 bytes contains dummy_trampoline address in JIT\n+\t * output for 64-bit and 32-bit powerpc, which can't\n+\t * disassemble a to valid instruction.\n+\t */\n+\ttriple = LLVMGetDefaultTargetTriple();\n+\tif (strstr(triple, \"powerpc\"))\n+\t\ttrunc_len = 8;\n+\n \tfor (pc = 0, i = 0; i < jited_funcs; ++i) {\n \t\tfprintf(text_out, \"func #%d:\\n\", i);\n-\t\tdisasm_one_func(text_out, image + pc, func_lens[i]);\n+\t\tdisasm_one_func(text_out, image + pc, func_lens[i] - trunc_len);\n \t\tfprintf(text_out, \"\\n\");\n \t\tpc += func_lens[i];\n \t}\n", "prefixes": [ "v3", "3/5" ] }