From: kernel test robot <lkp@intel.com>
To: "Jim Cromie" <jim.cromie@gmail.com>,
" Łukasz Bartosik" <ukaszb@chromium.org>
Cc: oe-kbuild-all@lists.linux.dev
Subject: [jimc:jump-batch-260903 51/56] lib/dynamic_debug.c:793:1: warning: the frame size of 1296 bytes is larger than 1280 bytes
Date: Sun, 06 Sep 2026 23:46:19 +0800 [thread overview]
Message-ID: <202609062305.5uATbcF2-lkp@intel.com> (raw)
tree: https://github.com/jimc/linux.git jump-batch-260903
head: c2b43d468878ecfd9647a8eea621ceda5d1cd208
commit: ac471b8cc89b36ddb96940b2bd214217c4bab1fe [51/56] x86/alternative, jump_label, dyndbg: fix early boot crashes and locking in jump-batch-core-1
config: arm-allyesconfig (https://download.01.org/0day-ci/archive/20260906/202609062305.5uATbcF2-lkp@intel.com/config)
compiler: arm-linux-gnueabi-gcc (GCC) 16.1.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260906/202609062305.5uATbcF2-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 <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202609062305.5uATbcF2-lkp@intel.com/
All warnings (new ones prefixed by >>):
lib/dynamic_debug.c: In function 'ddebug_apply_class_bitmap':
>> lib/dynamic_debug.c:793:1: warning: the frame size of 1296 bytes is larger than 1280 bytes [-Wframe-larger-than=]
793 | }
| ^
vim +793 lib/dynamic_debug.c
a2d375eda771a6 Jim Cromie 2020-08-31 744
0a63a411361860 Jim Cromie 2025-11-18 745 /* apply a new class-param setting */
b9400852c0801a Jim Cromie 2022-09-04 746 static int ddebug_apply_class_bitmap(const struct ddebug_class_param *dcp,
1ec0f7ef1e9ab3 Jim Cromie 2025-11-18 747 const u32 *new_bits, const u32 old_bits,
0a63a411361860 Jim Cromie 2025-11-18 748 const char *query_modname)
b9400852c0801a Jim Cromie 2022-09-04 749 {
b9400852c0801a Jim Cromie 2022-09-04 750 const struct ddebug_class_map *map = dcp->map;
b9400852c0801a Jim Cromie 2022-09-04 751 int matches = 0;
398a544c6030fa Jim Cromie 2026-03-08 752 int bi, pos = 0;
ac471b8cc89b36 Jim Cromie 2026-08-08 753 bool alloc = true;
ac471b8cc89b36 Jim Cromie 2026-08-08 754 char sbuf[1024];
398a544c6030fa Jim Cromie 2026-03-08 755 char *buf;
398a544c6030fa Jim Cromie 2026-03-08 756
398a544c6030fa Jim Cromie 2026-03-08 757 if (*new_bits == old_bits)
398a544c6030fa Jim Cromie 2026-03-08 758 return 0;
b9400852c0801a Jim Cromie 2022-09-04 759
1ec0f7ef1e9ab3 Jim Cromie 2025-11-18 760 v2pr_info("apply bitmap: 0x%x to: 0x%x for %s\n", *new_bits,
28d2dd8233aa44 Jim Cromie 2025-11-18 761 old_bits, query_modname ?: "'*'");
b9400852c0801a Jim Cromie 2022-09-04 762
ac471b8cc89b36 Jim Cromie 2026-08-08 763 buf = kmalloc(1024, GFP_KERNEL);
ac471b8cc89b36 Jim Cromie 2026-08-08 764 if (!buf) {
ac471b8cc89b36 Jim Cromie 2026-08-08 765 buf = sbuf;
ac471b8cc89b36 Jim Cromie 2026-08-08 766 alloc = false;
ac471b8cc89b36 Jim Cromie 2026-08-08 767 }
398a544c6030fa Jim Cromie 2026-03-08 768
1ec0f7ef1e9ab3 Jim Cromie 2025-11-18 769 for (bi = 0; bi < map->length && bi < 32; bi++) {
1ec0f7ef1e9ab3 Jim Cromie 2025-11-18 770 bool new_b = !!(*new_bits & BIT(bi));
1ec0f7ef1e9ab3 Jim Cromie 2025-11-18 771 bool old_b = !!(old_bits & BIT(bi));
1ec0f7ef1e9ab3 Jim Cromie 2025-11-18 772
1ec0f7ef1e9ab3 Jim Cromie 2025-11-18 773 if (new_b == old_b)
b9400852c0801a Jim Cromie 2022-09-04 774 continue;
b9400852c0801a Jim Cromie 2022-09-04 775
ac471b8cc89b36 Jim Cromie 2026-08-08 776 pos += scnprintf(buf + pos, (alloc ? 1024 : sizeof(sbuf)) - pos, "class %s %c%s%c",
398a544c6030fa Jim Cromie 2026-03-08 777 map->class_names[bi],
398a544c6030fa Jim Cromie 2026-03-08 778 new_b ? '+' : '-', dcp->flags, ';');
398a544c6030fa Jim Cromie 2026-03-08 779 }
b9400852c0801a Jim Cromie 2022-09-04 780
398a544c6030fa Jim Cromie 2026-03-08 781 if (pos) {
398a544c6030fa Jim Cromie 2026-03-08 782 buf[pos - 1] = '\0'; /* trim last ';' */
398a544c6030fa Jim Cromie 2026-03-08 783 matches = ddebug_exec_queries(buf, query_modname);
b9400852c0801a Jim Cromie 2022-09-04 784 }
398a544c6030fa Jim Cromie 2026-03-08 785
ac471b8cc89b36 Jim Cromie 2026-08-08 786 if (alloc)
398a544c6030fa Jim Cromie 2026-03-08 787 kfree(buf);
398a544c6030fa Jim Cromie 2026-03-08 788
1ec0f7ef1e9ab3 Jim Cromie 2025-11-18 789 v2pr_info("applied bitmap: 0x%x to: 0x%x for %s\n", *new_bits,
28d2dd8233aa44 Jim Cromie 2025-11-18 790 old_bits, query_modname ?: "'*'");
0a63a411361860 Jim Cromie 2025-11-18 791
b9400852c0801a Jim Cromie 2022-09-04 792 return matches;
b9400852c0801a Jim Cromie 2022-09-04 @793 }
b9400852c0801a Jim Cromie 2022-09-04 794
:::::: The code at line 793 was first introduced by commit
:::::: b9400852c0801aebee4fc8b62e6b7cc69c7fcbda dyndbg: add drm.debug style (drm/parameters/debug) bitmap support
:::::: TO: Jim Cromie <jim.cromie@gmail.com>
:::::: CC: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
reply other threads:[~2026-09-06 15:47 UTC|newest]
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