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charset=us-ascii Content-Disposition: inline tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: 0af2f6be1b4281385b618cb86ad946eded089ac8 commit: 394f3f02de5311ea976dd8046304194d22329bbc tracing: Use vmap_page_range() to map memmap ring buffer date: 5 days ago config: sh-randconfig-001-20250408 (https://download.01.org/0day-ci/archive/20250408/202504080619.xvDhvxPf-lkp@intel.com/config) compiler: sh4-linux-gcc (GCC) 13.3.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250408/202504080619.xvDhvxPf-lkp@intel.com/reproduce) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot | Closes: https://lore.kernel.org/oe-kbuild-all/202504080619.xvDhvxPf-lkp@intel.com/ All errors (new ones prefixed by >>): sh4-linux-ld: kernel/trace/trace.o: in function `enable_instances': >> kernel/trace/trace.c:10775:(.init.text+0x9f8): undefined reference to `get_vm_area' vim +10775 kernel/trace/trace.c 9c1c251d670bc1 Steven Rostedt (Google 2023-02-07 10695) cb1f98c5e57422 Steven Rostedt (Google 2023-02-07 10696) __init static void enable_instances(void) cb1f98c5e57422 Steven Rostedt (Google 2023-02-07 10697) { cb1f98c5e57422 Steven Rostedt (Google 2023-02-07 10698) struct trace_array *tr; 34ea8fa084dd96 Steven Rostedt 2025-04-02 10699 bool memmap_area = false; cb1f98c5e57422 Steven Rostedt (Google 2023-02-07 10700) char *curr_str; e645535a954ad5 Steven Rostedt (Google 2024-06-12 10701) char *name; cb1f98c5e57422 Steven Rostedt (Google 2023-02-07 10702) char *str; cb1f98c5e57422 Steven Rostedt (Google 2023-02-07 10703) char *tok; cb1f98c5e57422 Steven Rostedt (Google 2023-02-07 10704) cb1f98c5e57422 Steven Rostedt (Google 2023-02-07 10705) /* A tab is always appended */ cb1f98c5e57422 Steven Rostedt (Google 2023-02-07 10706) boot_instance_info[boot_instance_index - 1] = '\0'; cb1f98c5e57422 Steven Rostedt (Google 2023-02-07 10707) str = boot_instance_info; cb1f98c5e57422 Steven Rostedt (Google 2023-02-07 10708) cb1f98c5e57422 Steven Rostedt (Google 2023-02-07 10709) while ((curr_str = strsep(&str, "\t"))) { 29a02ec66556ac Steven Rostedt (Google 2024-08-15 10710) phys_addr_t start = 0; 29a02ec66556ac Steven Rostedt (Google 2024-08-15 10711) phys_addr_t size = 0; e645535a954ad5 Steven Rostedt (Google 2024-06-12 10712) unsigned long addr = 0; ddb8ea9e5ae482 Steven Rostedt 2024-08-22 10713 bool traceprintk = false; b6fc31b68731af Steven Rostedt 2024-08-22 10714 bool traceoff = false; b6fc31b68731af Steven Rostedt 2024-08-22 10715 char *flag_delim; b6fc31b68731af Steven Rostedt 2024-08-22 10716 char *addr_delim; fb6d03238e35f9 Masami Hiramatsu (Google 2025-02-19 10717) char *rname __free(kfree) = NULL; cb1f98c5e57422 Steven Rostedt (Google 2023-02-07 10718) cb1f98c5e57422 Steven Rostedt (Google 2023-02-07 10719) tok = strsep(&curr_str, ","); cb1f98c5e57422 Steven Rostedt (Google 2023-02-07 10720) b6fc31b68731af Steven Rostedt 2024-08-22 10721 flag_delim = strchr(tok, '^'); b6fc31b68731af Steven Rostedt 2024-08-22 10722 addr_delim = strchr(tok, '@'); b6fc31b68731af Steven Rostedt 2024-08-22 10723 b6fc31b68731af Steven Rostedt 2024-08-22 10724 if (addr_delim) b6fc31b68731af Steven Rostedt 2024-08-22 10725 *addr_delim++ = '\0'; b6fc31b68731af Steven Rostedt 2024-08-22 10726 b6fc31b68731af Steven Rostedt 2024-08-22 10727 if (flag_delim) b6fc31b68731af Steven Rostedt 2024-08-22 10728 *flag_delim++ = '\0'; b6fc31b68731af Steven Rostedt 2024-08-22 10729 b6fc31b68731af Steven Rostedt 2024-08-22 10730 name = tok; b6fc31b68731af Steven Rostedt 2024-08-22 10731 b6fc31b68731af Steven Rostedt 2024-08-22 10732 if (flag_delim) { b6fc31b68731af Steven Rostedt 2024-08-22 10733 char *flag; b6fc31b68731af Steven Rostedt 2024-08-22 10734 b6fc31b68731af Steven Rostedt 2024-08-22 10735 while ((flag = strsep(&flag_delim, "^"))) { ddb8ea9e5ae482 Steven Rostedt 2024-08-22 10736 if (strcmp(flag, "traceoff") == 0) { b6fc31b68731af Steven Rostedt 2024-08-22 10737 traceoff = true; ddb8ea9e5ae482 Steven Rostedt 2024-08-22 10738 } else if ((strcmp(flag, "printk") == 0) || ddb8ea9e5ae482 Steven Rostedt 2024-08-22 10739 (strcmp(flag, "traceprintk") == 0) || ddb8ea9e5ae482 Steven Rostedt 2024-08-22 10740 (strcmp(flag, "trace_printk") == 0)) { ddb8ea9e5ae482 Steven Rostedt 2024-08-22 10741 traceprintk = true; ddb8ea9e5ae482 Steven Rostedt 2024-08-22 10742 } else { b6fc31b68731af Steven Rostedt 2024-08-22 10743 pr_info("Tracing: Invalid instance flag '%s' for %s\n", b6fc31b68731af Steven Rostedt 2024-08-22 10744 flag, name); b6fc31b68731af Steven Rostedt 2024-08-22 10745 } b6fc31b68731af Steven Rostedt 2024-08-22 10746 } ddb8ea9e5ae482 Steven Rostedt 2024-08-22 10747 } b6fc31b68731af Steven Rostedt 2024-08-22 10748 b6fc31b68731af Steven Rostedt 2024-08-22 10749 tok = addr_delim; 29a02ec66556ac Steven Rostedt (Google 2024-08-15 10750) if (tok && isdigit(*tok)) { e645535a954ad5 Steven Rostedt (Google 2024-06-12 10751) start = memparse(tok, &tok); e645535a954ad5 Steven Rostedt (Google 2024-06-12 10752) if (!start) { e645535a954ad5 Steven Rostedt (Google 2024-06-12 10753) pr_warn("Tracing: Invalid boot instance address for %s\n", e645535a954ad5 Steven Rostedt (Google 2024-06-12 10754) name); e645535a954ad5 Steven Rostedt (Google 2024-06-12 10755) continue; e645535a954ad5 Steven Rostedt (Google 2024-06-12 10756) } e645535a954ad5 Steven Rostedt (Google 2024-06-12 10757) if (*tok != ':') { e645535a954ad5 Steven Rostedt (Google 2024-06-12 10758) pr_warn("Tracing: No size specified for instance %s\n", name); e645535a954ad5 Steven Rostedt (Google 2024-06-12 10759) continue; e645535a954ad5 Steven Rostedt (Google 2024-06-12 10760) } e645535a954ad5 Steven Rostedt (Google 2024-06-12 10761) tok++; e645535a954ad5 Steven Rostedt (Google 2024-06-12 10762) size = memparse(tok, &tok); e645535a954ad5 Steven Rostedt (Google 2024-06-12 10763) if (!size) { e645535a954ad5 Steven Rostedt (Google 2024-06-12 10764) pr_warn("Tracing: Invalid boot instance size for %s\n", e645535a954ad5 Steven Rostedt (Google 2024-06-12 10765) name); e645535a954ad5 Steven Rostedt (Google 2024-06-12 10766) continue; e645535a954ad5 Steven Rostedt (Google 2024-06-12 10767) } 34ea8fa084dd96 Steven Rostedt 2025-04-02 10768 memmap_area = true; 29a02ec66556ac Steven Rostedt (Google 2024-08-15 10769) } else if (tok) { 29a02ec66556ac Steven Rostedt (Google 2024-08-15 10770) if (!reserve_mem_find_by_name(tok, &start, &size)) { 29a02ec66556ac Steven Rostedt (Google 2024-08-15 10771) start = 0; 29a02ec66556ac Steven Rostedt (Google 2024-08-15 10772) pr_warn("Failed to map boot instance %s to %s\n", name, tok); 29a02ec66556ac Steven Rostedt (Google 2024-08-15 10773) continue; 29a02ec66556ac Steven Rostedt (Google 2024-08-15 10774) } fb6d03238e35f9 Masami Hiramatsu (Google 2025-02-19 @10775) rname = kstrdup(tok, GFP_KERNEL); 29a02ec66556ac Steven Rostedt (Google 2024-08-15 10776) } 29a02ec66556ac Steven Rostedt (Google 2024-08-15 10777) 29a02ec66556ac Steven Rostedt (Google 2024-08-15 10778) if (start) { c44a14f216f45d Steven Rostedt 2025-04-02 10779 /* Start and size must be page aligned */ c44a14f216f45d Steven Rostedt 2025-04-02 10780 if (start & ~PAGE_MASK) { c44a14f216f45d Steven Rostedt 2025-04-02 10781 pr_warn("Tracing: mapping start addr %pa is not page aligned\n", &start); c44a14f216f45d Steven Rostedt 2025-04-02 10782 continue; c44a14f216f45d Steven Rostedt 2025-04-02 10783 } c44a14f216f45d Steven Rostedt 2025-04-02 10784 if (size & ~PAGE_MASK) { c44a14f216f45d Steven Rostedt 2025-04-02 10785 pr_warn("Tracing: mapping size %pa is not page aligned\n", &size); c44a14f216f45d Steven Rostedt 2025-04-02 10786 continue; c44a14f216f45d Steven Rostedt 2025-04-02 10787 } c44a14f216f45d Steven Rostedt 2025-04-02 10788 34ea8fa084dd96 Steven Rostedt 2025-04-02 10789 if (memmap_area) e645535a954ad5 Steven Rostedt (Google 2024-06-12 10790) addr = map_pages(start, size); 34ea8fa084dd96 Steven Rostedt 2025-04-02 10791 else 34ea8fa084dd96 Steven Rostedt 2025-04-02 10792 addr = (unsigned long)phys_to_virt(start); e645535a954ad5 Steven Rostedt (Google 2024-06-12 10793) if (addr) { 29a02ec66556ac Steven Rostedt (Google 2024-08-15 10794) pr_info("Tracing: mapped boot instance %s at physical memory %pa of size 0x%lx\n", 29a02ec66556ac Steven Rostedt (Google 2024-08-15 10795) name, &start, (unsigned long)size); e645535a954ad5 Steven Rostedt (Google 2024-06-12 10796) } else { e645535a954ad5 Steven Rostedt (Google 2024-06-12 10797) pr_warn("Tracing: Failed to map boot instance %s\n", name); e645535a954ad5 Steven Rostedt (Google 2024-06-12 10798) continue; e645535a954ad5 Steven Rostedt (Google 2024-06-12 10799) } e645535a954ad5 Steven Rostedt (Google 2024-06-12 10800) } else { e645535a954ad5 Steven Rostedt (Google 2024-06-12 10801) /* Only non mapped buffers have snapshot buffers */ 9c1c251d670bc1 Steven Rostedt (Google 2023-02-07 10802) if (IS_ENABLED(CONFIG_TRACER_MAX_TRACE)) e645535a954ad5 Steven Rostedt (Google 2024-06-12 10803) do_allocate_snapshot(name); e645535a954ad5 Steven Rostedt (Google 2024-06-12 10804) } 9c1c251d670bc1 Steven Rostedt (Google 2023-02-07 10805) e645535a954ad5 Steven Rostedt (Google 2024-06-12 10806) tr = trace_array_create_systems(name, NULL, addr, size); 94dfa500e7dedd Dan Carpenter 2024-06-20 10807 if (IS_ERR(tr)) { e645535a954ad5 Steven Rostedt (Google 2024-06-12 10808) pr_warn("Tracing: Failed to create instance buffer %s\n", curr_str); cb1f98c5e57422 Steven Rostedt (Google 2023-02-07 10809) continue; cb1f98c5e57422 Steven Rostedt (Google 2023-02-07 10810) } e645535a954ad5 Steven Rostedt (Google 2024-06-12 10811) b6fc31b68731af Steven Rostedt 2024-08-22 10812 if (traceoff) b6fc31b68731af Steven Rostedt 2024-08-22 10813 tracer_tracing_off(tr); b6fc31b68731af Steven Rostedt 2024-08-22 10814 9b7bdf6f6ece6e Steven Rostedt 2024-08-22 10815 if (traceprintk) ef2bd81d0c9561 Steven Rostedt 2024-08-22 10816 update_printk_trace(tr); 9b7bdf6f6ece6e Steven Rostedt 2024-08-22 10817 ddb8ea9e5ae482 Steven Rostedt 2024-08-22 10818 /* 34ea8fa084dd96 Steven Rostedt 2025-04-02 10819 * memmap'd buffers can not be freed. ddb8ea9e5ae482 Steven Rostedt 2024-08-22 10820 */ 34ea8fa084dd96 Steven Rostedt 2025-04-02 10821 if (memmap_area) { 34ea8fa084dd96 Steven Rostedt 2025-04-02 10822 tr->flags |= TRACE_ARRAY_FL_MEMMAP; 34ea8fa084dd96 Steven Rostedt 2025-04-02 10823 tr->ref++; 34ea8fa084dd96 Steven Rostedt 2025-04-02 10824 } 34ea8fa084dd96 Steven Rostedt 2025-04-02 10825 2cf9733891a460 Steven Rostedt 2024-10-11 10826 if (start) { bcba8d4dbe6880 Steven Rostedt 2025-03-05 10827 tr->flags |= TRACE_ARRAY_FL_BOOT | TRACE_ARRAY_FL_LAST_BOOT; fb6d03238e35f9 Masami Hiramatsu (Google 2025-02-19 10828) tr->range_name = no_free_ptr(rname); 2cf9733891a460 Steven Rostedt 2024-10-11 10829 } c4846480831ea5 Steven Rostedt (Google 2023-02-07 10830) c4846480831ea5 Steven Rostedt (Google 2023-02-07 10831) while ((tok = strsep(&curr_str, ","))) { c4846480831ea5 Steven Rostedt (Google 2023-02-07 10832) early_enable_events(tr, tok, true); c4846480831ea5 Steven Rostedt (Google 2023-02-07 10833) } cb1f98c5e57422 Steven Rostedt (Google 2023-02-07 10834) } cb1f98c5e57422 Steven Rostedt (Google 2023-02-07 10835) } cb1f98c5e57422 Steven Rostedt (Google 2023-02-07 10836) :::::: The code at line 10775 was first introduced by commit :::::: fb6d03238e35f96cc1d6a5411ee1d684221d1c39 tracing: Freeable reserved ring buffer :::::: TO: Masami Hiramatsu (Google) :::::: CC: Steven Rostedt (Google) -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki