[kbuild] arch/arm/kernel/module-plts.c:65 get_module_plt() warn: we never enter this loop
CC: kbuild-...@lists.01.org
BCC: l...@intel.com
CC: linux-ker...@vger.kernel.org
TO: Alex Sverdlin
CC: "Russell King (Oracle)"
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
master
head: fb184c4af9b9f4563e7a126219389986a71d5b5b
commit: 79f32b221b18c15a98507b101ef4beb52444cc6f ARM: 9079/1: ftrace: Add
MODULE_PLTS support
date: 9 months ago
:: branch date: 19 hours ago
:: commit date: 9 months ago
config: arm-randconfig-m031-20220302
(https://download.01.org/0day-ci/archive/20220302/202203022209.reyc0wot-...@intel.com/config)
compiler: arm-linux-gnueabi-gcc (GCC) 11.2.0
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot
Reported-by: Dan Carpenter
smatch warnings:
arch/arm/kernel/module-plts.c:65 get_module_plt() warn: we never enter this loop
vim +65 arch/arm/kernel/module-plts.c
79f32b221b18c1 Alex Sverdlin 2021-05-05 50
7d485f647c1f4a Ard Biesheuvel 2014-11-24 51 u32 get_module_plt(struct module
*mod, unsigned long loc, Elf32_Addr val)
7d485f647c1f4a Ard Biesheuvel 2014-11-24 52 {
b7ede5a1f5905a Ard Biesheuvel 2017-02-22 53 struct mod_plt_sec *pltsec =
!in_init(mod, loc) ? &mod->arch.core :
b7ede5a1f5905a Ard Biesheuvel 2017-02-22 54
&mod->arch.init;
79f32b221b18c1 Alex Sverdlin 2021-05-05 55 struct plt_entries *plt;
79f32b221b18c1 Alex Sverdlin 2021-05-05 56 int idx;
79f32b221b18c1 Alex Sverdlin 2021-05-05 57
79f32b221b18c1 Alex Sverdlin 2021-05-05 58 /* cache the address, ELF
header is available only during module load */
79f32b221b18c1 Alex Sverdlin 2021-05-05 59 if (!pltsec->plt_ent)
79f32b221b18c1 Alex Sverdlin 2021-05-05 60 pltsec->plt_ent =
(struct plt_entries *)pltsec->plt->sh_addr;
79f32b221b18c1 Alex Sverdlin 2021-05-05 61 plt = pltsec->plt_ent;
b7ede5a1f5905a Ard Biesheuvel 2017-02-22 62
79f32b221b18c1 Alex Sverdlin 2021-05-05 63 prealloc_fixed(pltsec, plt);
79f32b221b18c1 Alex Sverdlin 2021-05-05 64
79f32b221b18c1 Alex Sverdlin 2021-05-05 @65 for (idx = 0; idx <
ARRAY_SIZE(fixed_plts); ++idx)
79f32b221b18c1 Alex Sverdlin 2021-05-05 66 if (plt->lit[idx] ==
val)
79f32b221b18c1 Alex Sverdlin 2021-05-05 67 return
(u32)&plt->ldr[idx];
35fa91eed817d2 Ard Biesheuvel 2016-08-16 68
79f32b221b18c1 Alex Sverdlin 2021-05-05 69 idx = 0;
66e94ba3c8ea5f Ard Biesheuvel 2016-08-18 70 /*
66e94ba3c8ea5f Ard Biesheuvel 2016-08-18 71* Look for an existing entry
pointing to 'val'. Given that the
66e94ba3c8ea5f Ard Biesheuvel 2016-08-18 72* relocations are sorted, this
will be the last entry we allocated.
66e94ba3c8ea5f Ard Biesheuvel 2016-08-18 73* (if one exists).
66e94ba3c8ea5f Ard Biesheuvel 2016-08-18 74*/
b7ede5a1f5905a Ard Biesheuvel 2017-02-22 75 if (pltsec->plt_count > 0) {
b7ede5a1f5905a Ard Biesheuvel 2017-02-22 76 plt +=
(pltsec->plt_count - 1) / PLT_ENT_COUNT;
b7ede5a1f5905a Ard Biesheuvel 2017-02-22 77 idx =
(pltsec->plt_count - 1) % PLT_ENT_COUNT;
7d485f647c1f4a Ard Biesheuvel 2014-11-24 78
66e94ba3c8ea5f Ard Biesheuvel 2016-08-18 79 if (plt->lit[idx] ==
val)
66e94ba3c8ea5f Ard Biesheuvel 2016-08-18 80 return
(u32)&plt->ldr[idx];
66e94ba3c8ea5f Ard Biesheuvel 2016-08-18 81
66e94ba3c8ea5f Ard Biesheuvel 2016-08-18 82 idx = (idx + 1) %
PLT_ENT_COUNT;
66e94ba3c8ea5f Ard Biesheuvel 2016-08-18 83 if (!idx)
66e94ba3c8ea5f Ard Biesheuvel 2016-08-18 84 plt++;
66e94ba3c8ea5f Ard Biesheuvel 2016-08-18 85 }
66e94ba3c8ea5f Ard Biesheuvel 2016-08-18 86
b7ede5a1f5905a Ard Biesheuvel 2017-02-22 87 pltsec->plt_count++;
b7ede5a1f5905a Ard Biesheuvel 2017-02-22 88 BUG_ON(pltsec->plt_count *
PLT_ENT_SIZE > pltsec->plt->sh_size);
7d485f647c1f4a Ard Biesheuvel 2014-11-24 89
66e94ba3c8ea5f Ard Biesheuvel 2016-08-18 90 if (!idx)
7d485f647c1f4a Ard Biesheuvel 2014-11-24 91 /* Populate a new set
of entries */
7d485f647c1f4a Ard Biesheuvel 2014-11-24 92 *plt = (struct
plt_entries){
7d485f647c1f4a Ard Biesheuvel 2014-11-24 93 { [0 ...
PLT_ENT_COUNT - 1] = PLT_ENT_LDR, },
7d485f647c1f4a Ard Biesheuvel 2014-11-24 94 { val, }
7d485f647c1f4a Ard Biesheuvel 2014-11-24 95 };
66e94ba3c8ea5f Ard Biesheuvel 2016-08-18 96 else
66e94ba3c8ea5f Ard Biesheuvel 2016-08-18 97 plt->lit[idx] = val;
66e94ba3c8ea5f Ard Biesheuvel 2016-08-18 98
66e94ba3c8ea5f Ard Biesheuvel 2016-08-18 99 return (u32)&plt->ldr[idx];
7d485f647c1f4a Ard Biesheuvel 2014-11-24 100 }
7d485f647c1f4a Ard Biesheuvel 2014-11-24 101
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-...@lists.01.org
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[kbuild] arch/arm/kernel/module-plts.c:65 get_module_plt() warn: we never enter this loop
CC: kbuild-...@lists.01.org
CC: linux-ker...@vger.kernel.org
TO: Alex Sverdlin
CC: "Russell King (Oracle)"
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
master
head: d567f5db412ed52de0b3b3efca4a451263de6108
commit: 79f32b221b18c15a98507b101ef4beb52444cc6f ARM: 9079/1: ftrace: Add
MODULE_PLTS support
date: 8 months ago
:: branch date: 3 hours ago
:: commit date: 8 months ago
config: arm-randconfig-m031-20220214
(https://download.01.org/0day-ci/archive/20220215/202202150457.oamwo3an-...@intel.com/config)
compiler: arm-linux-gnueabi-gcc (GCC) 11.2.0
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot
Reported-by: Dan Carpenter
smatch warnings:
arch/arm/kernel/module-plts.c:65 get_module_plt() warn: we never enter this loop
vim +65 arch/arm/kernel/module-plts.c
79f32b221b18c1 Alex Sverdlin 2021-05-05 50
7d485f647c1f4a Ard Biesheuvel 2014-11-24 51 u32 get_module_plt(struct module
*mod, unsigned long loc, Elf32_Addr val)
7d485f647c1f4a Ard Biesheuvel 2014-11-24 52 {
b7ede5a1f5905a Ard Biesheuvel 2017-02-22 53 struct mod_plt_sec *pltsec =
!in_init(mod, loc) ? &mod->arch.core :
b7ede5a1f5905a Ard Biesheuvel 2017-02-22 54
&mod->arch.init;
79f32b221b18c1 Alex Sverdlin 2021-05-05 55 struct plt_entries *plt;
79f32b221b18c1 Alex Sverdlin 2021-05-05 56 int idx;
79f32b221b18c1 Alex Sverdlin 2021-05-05 57
79f32b221b18c1 Alex Sverdlin 2021-05-05 58 /* cache the address, ELF
header is available only during module load */
79f32b221b18c1 Alex Sverdlin 2021-05-05 59 if (!pltsec->plt_ent)
79f32b221b18c1 Alex Sverdlin 2021-05-05 60 pltsec->plt_ent =
(struct plt_entries *)pltsec->plt->sh_addr;
79f32b221b18c1 Alex Sverdlin 2021-05-05 61 plt = pltsec->plt_ent;
b7ede5a1f5905a Ard Biesheuvel 2017-02-22 62
79f32b221b18c1 Alex Sverdlin 2021-05-05 63 prealloc_fixed(pltsec, plt);
79f32b221b18c1 Alex Sverdlin 2021-05-05 64
79f32b221b18c1 Alex Sverdlin 2021-05-05 @65 for (idx = 0; idx <
ARRAY_SIZE(fixed_plts); ++idx)
79f32b221b18c1 Alex Sverdlin 2021-05-05 66 if (plt->lit[idx] ==
val)
79f32b221b18c1 Alex Sverdlin 2021-05-05 67 return
(u32)&plt->ldr[idx];
35fa91eed817d2 Ard Biesheuvel 2016-08-16 68
79f32b221b18c1 Alex Sverdlin 2021-05-05 69 idx = 0;
66e94ba3c8ea5f Ard Biesheuvel 2016-08-18 70 /*
66e94ba3c8ea5f Ard Biesheuvel 2016-08-18 71* Look for an existing entry
pointing to 'val'. Given that the
66e94ba3c8ea5f Ard Biesheuvel 2016-08-18 72* relocations are sorted, this
will be the last entry we allocated.
66e94ba3c8ea5f Ard Biesheuvel 2016-08-18 73* (if one exists).
66e94ba3c8ea5f Ard Biesheuvel 2016-08-18 74*/
b7ede5a1f5905a Ard Biesheuvel 2017-02-22 75 if (pltsec->plt_count > 0) {
b7ede5a1f5905a Ard Biesheuvel 2017-02-22 76 plt +=
(pltsec->plt_count - 1) / PLT_ENT_COUNT;
b7ede5a1f5905a Ard Biesheuvel 2017-02-22 77 idx =
(pltsec->plt_count - 1) % PLT_ENT_COUNT;
7d485f647c1f4a Ard Biesheuvel 2014-11-24 78
66e94ba3c8ea5f Ard Biesheuvel 2016-08-18 79 if (plt->lit[idx] ==
val)
66e94ba3c8ea5f Ard Biesheuvel 2016-08-18 80 return
(u32)&plt->ldr[idx];
66e94ba3c8ea5f Ard Biesheuvel 2016-08-18 81
66e94ba3c8ea5f Ard Biesheuvel 2016-08-18 82 idx = (idx + 1) %
PLT_ENT_COUNT;
66e94ba3c8ea5f Ard Biesheuvel 2016-08-18 83 if (!idx)
66e94ba3c8ea5f Ard Biesheuvel 2016-08-18 84 plt++;
66e94ba3c8ea5f Ard Biesheuvel 2016-08-18 85 }
66e94ba3c8ea5f Ard Biesheuvel 2016-08-18 86
b7ede5a1f5905a Ard Biesheuvel 2017-02-22 87 pltsec->plt_count++;
b7ede5a1f5905a Ard Biesheuvel 2017-02-22 88 BUG_ON(pltsec->plt_count *
PLT_ENT_SIZE > pltsec->plt->sh_size);
7d485f647c1f4a Ard Biesheuvel 2014-11-24 89
66e94ba3c8ea5f Ard Biesheuvel 2016-08-18 90 if (!idx)
7d485f647c1f4a Ard Biesheuvel 2014-11-24 91 /* Populate a new set
of entries */
7d485f647c1f4a Ard Biesheuvel 2014-11-24 92 *plt = (struct
plt_entries){
7d485f647c1f4a Ard Biesheuvel 2014-11-24 93 { [0 ...
PLT_ENT_COUNT - 1] = PLT_ENT_LDR, },
7d485f647c1f4a Ard Biesheuvel 2014-11-24 94 { val, }
7d485f647c1f4a Ard Biesheuvel 2014-11-24 95 };
66e94ba3c8ea5f Ard Biesheuvel 2016-08-18 96 else
66e94ba3c8ea5f Ard Biesheuvel 2016-08-18 97 plt->lit[idx] = val;
66e94ba3c8ea5f Ard Biesheuvel 2016-08-18 98
66e94ba3c8ea5f Ard Biesheuvel 2016-08-18 99 return (u32)&plt->ldr[idx];
7d485f647c1f4a Ard Biesheuvel 2014-11-24 100 }
7d485f647c1f4a Ard Biesheuvel 2014-11-24 101
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-...@lists.01.org
___
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[kbuild] arch/arm/kernel/module-plts.c:65 get_module_plt() warn: we never enter this loop
CC: kbuild-...@lists.01.org
CC: linux-ker...@vger.kernel.org
TO: Alex Sverdlin
CC: "Russell King (Oracle)"
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
master
head: 5472f14a37421d1bca3dddf33cabd3bd6dbefbbc
commit: 79f32b221b18c15a98507b101ef4beb52444cc6f ARM: 9079/1: ftrace: Add
MODULE_PLTS support
date: 6 months ago
:: branch date: 17 hours ago
:: commit date: 6 months ago
config: arm-randconfig-m031-20211214
(https://download.01.org/0day-ci/archive/20211214/202112142352.lfc1wryp-...@intel.com/config)
compiler: arm-linux-gnueabi-gcc (GCC) 11.2.0
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot
Reported-by: Dan Carpenter
smatch warnings:
arch/arm/kernel/module-plts.c:65 get_module_plt() warn: we never enter this loop
vim +65 arch/arm/kernel/module-plts.c
79f32b221b18c1 Alex Sverdlin 2021-05-05 50
7d485f647c1f4a Ard Biesheuvel 2014-11-24 51 u32 get_module_plt(struct module
*mod, unsigned long loc, Elf32_Addr val)
7d485f647c1f4a Ard Biesheuvel 2014-11-24 52 {
b7ede5a1f5905a Ard Biesheuvel 2017-02-22 53 struct mod_plt_sec *pltsec =
!in_init(mod, loc) ? &mod->arch.core :
b7ede5a1f5905a Ard Biesheuvel 2017-02-22 54
&mod->arch.init;
79f32b221b18c1 Alex Sverdlin 2021-05-05 55 struct plt_entries *plt;
79f32b221b18c1 Alex Sverdlin 2021-05-05 56 int idx;
79f32b221b18c1 Alex Sverdlin 2021-05-05 57
79f32b221b18c1 Alex Sverdlin 2021-05-05 58 /* cache the address, ELF
header is available only during module load */
79f32b221b18c1 Alex Sverdlin 2021-05-05 59 if (!pltsec->plt_ent)
79f32b221b18c1 Alex Sverdlin 2021-05-05 60 pltsec->plt_ent =
(struct plt_entries *)pltsec->plt->sh_addr;
79f32b221b18c1 Alex Sverdlin 2021-05-05 61 plt = pltsec->plt_ent;
b7ede5a1f5905a Ard Biesheuvel 2017-02-22 62
79f32b221b18c1 Alex Sverdlin 2021-05-05 63 prealloc_fixed(pltsec, plt);
79f32b221b18c1 Alex Sverdlin 2021-05-05 64
79f32b221b18c1 Alex Sverdlin 2021-05-05 @65 for (idx = 0; idx <
ARRAY_SIZE(fixed_plts); ++idx)
79f32b221b18c1 Alex Sverdlin 2021-05-05 66 if (plt->lit[idx] ==
val)
79f32b221b18c1 Alex Sverdlin 2021-05-05 67 return
(u32)&plt->ldr[idx];
35fa91eed817d2 Ard Biesheuvel 2016-08-16 68
79f32b221b18c1 Alex Sverdlin 2021-05-05 69 idx = 0;
66e94ba3c8ea5f Ard Biesheuvel 2016-08-18 70 /*
66e94ba3c8ea5f Ard Biesheuvel 2016-08-18 71* Look for an existing entry
pointing to 'val'. Given that the
66e94ba3c8ea5f Ard Biesheuvel 2016-08-18 72* relocations are sorted, this
will be the last entry we allocated.
66e94ba3c8ea5f Ard Biesheuvel 2016-08-18 73* (if one exists).
66e94ba3c8ea5f Ard Biesheuvel 2016-08-18 74*/
b7ede5a1f5905a Ard Biesheuvel 2017-02-22 75 if (pltsec->plt_count > 0) {
b7ede5a1f5905a Ard Biesheuvel 2017-02-22 76 plt +=
(pltsec->plt_count - 1) / PLT_ENT_COUNT;
b7ede5a1f5905a Ard Biesheuvel 2017-02-22 77 idx =
(pltsec->plt_count - 1) % PLT_ENT_COUNT;
7d485f647c1f4a Ard Biesheuvel 2014-11-24 78
66e94ba3c8ea5f Ard Biesheuvel 2016-08-18 79 if (plt->lit[idx] ==
val)
66e94ba3c8ea5f Ard Biesheuvel 2016-08-18 80 return
(u32)&plt->ldr[idx];
66e94ba3c8ea5f Ard Biesheuvel 2016-08-18 81
66e94ba3c8ea5f Ard Biesheuvel 2016-08-18 82 idx = (idx + 1) %
PLT_ENT_COUNT;
66e94ba3c8ea5f Ard Biesheuvel 2016-08-18 83 if (!idx)
66e94ba3c8ea5f Ard Biesheuvel 2016-08-18 84 plt++;
66e94ba3c8ea5f Ard Biesheuvel 2016-08-18 85 }
66e94ba3c8ea5f Ard Biesheuvel 2016-08-18 86
b7ede5a1f5905a Ard Biesheuvel 2017-02-22 87 pltsec->plt_count++;
b7ede5a1f5905a Ard Biesheuvel 2017-02-22 88 BUG_ON(pltsec->plt_count *
PLT_ENT_SIZE > pltsec->plt->sh_size);
7d485f647c1f4a Ard Biesheuvel 2014-11-24 89
66e94ba3c8ea5f Ard Biesheuvel 2016-08-18 90 if (!idx)
7d485f647c1f4a Ard Biesheuvel 2014-11-24 91 /* Populate a new set
of entries */
7d485f647c1f4a Ard Biesheuvel 2014-11-24 92 *plt = (struct
plt_entries){
7d485f647c1f4a Ard Biesheuvel 2014-11-24 93 { [0 ...
PLT_ENT_COUNT - 1] = PLT_ENT_LDR, },
7d485f647c1f4a Ard Biesheuvel 2014-11-24 94 { val, }
7d485f647c1f4a Ard Biesheuvel 2014-11-24 95 };
66e94ba3c8ea5f Ard Biesheuvel 2016-08-18 96 else
66e94ba3c8ea5f Ard Biesheuvel 2016-08-18 97 plt->lit[idx] = val;
66e94ba3c8ea5f Ard Biesheuvel 2016-08-18 98
66e94ba3c8ea5f Ard Biesheuvel 2016-08-18 99 return (u32)&plt->ldr[idx];
7d485f647c1f4a Ard Biesheuvel 2014-11-24 100 }
7d485f647c1f4a Ard Biesheuvel 2014-11-24 101
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-...@lists.01.org
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To unsubscribe sen
[kbuild] arch/arm/kernel/module-plts.c:65 get_module_plt() warn: we never enter this loop
CC: kbuild-...@lists.01.org
CC: linux-ker...@vger.kernel.org
TO: Alex Sverdlin
CC: "Russell King (Oracle)"
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
master
head: ee1703cda8dc777e937dec172da55beaf1a74919
commit: 79f32b221b18c15a98507b101ef4beb52444cc6f ARM: 9079/1: ftrace: Add
MODULE_PLTS support
date: 5 months ago
:: branch date: 3 hours ago
:: commit date: 5 months ago
config: arm-randconfig-m031-20211104 (attached as .config)
compiler: arm-linux-gnueabi-gcc (GCC) 11.2.0
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot
Reported-by: Dan Carpenter
smatch warnings:
arch/arm/kernel/module-plts.c:65 get_module_plt() warn: we never enter this loop
vim +65 arch/arm/kernel/module-plts.c
79f32b221b18c1 Alex Sverdlin 2021-05-05 50
7d485f647c1f4a Ard Biesheuvel 2014-11-24 51 u32 get_module_plt(struct module
*mod, unsigned long loc, Elf32_Addr val)
7d485f647c1f4a Ard Biesheuvel 2014-11-24 52 {
b7ede5a1f5905a Ard Biesheuvel 2017-02-22 53 struct mod_plt_sec *pltsec =
!in_init(mod, loc) ? &mod->arch.core :
b7ede5a1f5905a Ard Biesheuvel 2017-02-22 54
&mod->arch.init;
79f32b221b18c1 Alex Sverdlin 2021-05-05 55 struct plt_entries *plt;
79f32b221b18c1 Alex Sverdlin 2021-05-05 56 int idx;
79f32b221b18c1 Alex Sverdlin 2021-05-05 57
79f32b221b18c1 Alex Sverdlin 2021-05-05 58 /* cache the address, ELF
header is available only during module load */
79f32b221b18c1 Alex Sverdlin 2021-05-05 59 if (!pltsec->plt_ent)
79f32b221b18c1 Alex Sverdlin 2021-05-05 60 pltsec->plt_ent =
(struct plt_entries *)pltsec->plt->sh_addr;
79f32b221b18c1 Alex Sverdlin 2021-05-05 61 plt = pltsec->plt_ent;
b7ede5a1f5905a Ard Biesheuvel 2017-02-22 62
79f32b221b18c1 Alex Sverdlin 2021-05-05 63 prealloc_fixed(pltsec, plt);
79f32b221b18c1 Alex Sverdlin 2021-05-05 64
79f32b221b18c1 Alex Sverdlin 2021-05-05 @65 for (idx = 0; idx <
ARRAY_SIZE(fixed_plts); ++idx)
79f32b221b18c1 Alex Sverdlin 2021-05-05 66 if (plt->lit[idx] ==
val)
79f32b221b18c1 Alex Sverdlin 2021-05-05 67 return
(u32)&plt->ldr[idx];
35fa91eed817d2 Ard Biesheuvel 2016-08-16 68
79f32b221b18c1 Alex Sverdlin 2021-05-05 69 idx = 0;
66e94ba3c8ea5f Ard Biesheuvel 2016-08-18 70 /*
66e94ba3c8ea5f Ard Biesheuvel 2016-08-18 71* Look for an existing entry
pointing to 'val'. Given that the
66e94ba3c8ea5f Ard Biesheuvel 2016-08-18 72* relocations are sorted, this
will be the last entry we allocated.
66e94ba3c8ea5f Ard Biesheuvel 2016-08-18 73* (if one exists).
66e94ba3c8ea5f Ard Biesheuvel 2016-08-18 74*/
b7ede5a1f5905a Ard Biesheuvel 2017-02-22 75 if (pltsec->plt_count > 0) {
b7ede5a1f5905a Ard Biesheuvel 2017-02-22 76 plt +=
(pltsec->plt_count - 1) / PLT_ENT_COUNT;
b7ede5a1f5905a Ard Biesheuvel 2017-02-22 77 idx =
(pltsec->plt_count - 1) % PLT_ENT_COUNT;
7d485f647c1f4a Ard Biesheuvel 2014-11-24 78
66e94ba3c8ea5f Ard Biesheuvel 2016-08-18 79 if (plt->lit[idx] ==
val)
66e94ba3c8ea5f Ard Biesheuvel 2016-08-18 80 return
(u32)&plt->ldr[idx];
66e94ba3c8ea5f Ard Biesheuvel 2016-08-18 81
66e94ba3c8ea5f Ard Biesheuvel 2016-08-18 82 idx = (idx + 1) %
PLT_ENT_COUNT;
66e94ba3c8ea5f Ard Biesheuvel 2016-08-18 83 if (!idx)
66e94ba3c8ea5f Ard Biesheuvel 2016-08-18 84 plt++;
66e94ba3c8ea5f Ard Biesheuvel 2016-08-18 85 }
66e94ba3c8ea5f Ard Biesheuvel 2016-08-18 86
b7ede5a1f5905a Ard Biesheuvel 2017-02-22 87 pltsec->plt_count++;
b7ede5a1f5905a Ard Biesheuvel 2017-02-22 88 BUG_ON(pltsec->plt_count *
PLT_ENT_SIZE > pltsec->plt->sh_size);
7d485f647c1f4a Ard Biesheuvel 2014-11-24 89
66e94ba3c8ea5f Ard Biesheuvel 2016-08-18 90 if (!idx)
7d485f647c1f4a Ard Biesheuvel 2014-11-24 91 /* Populate a new set
of entries */
7d485f647c1f4a Ard Biesheuvel 2014-11-24 92 *plt = (struct
plt_entries){
7d485f647c1f4a Ard Biesheuvel 2014-11-24 93 { [0 ...
PLT_ENT_COUNT - 1] = PLT_ENT_LDR, },
7d485f647c1f4a Ard Biesheuvel 2014-11-24 94 { val, }
7d485f647c1f4a Ard Biesheuvel 2014-11-24 95 };
66e94ba3c8ea5f Ard Biesheuvel 2016-08-18 96 else
66e94ba3c8ea5f Ard Biesheuvel 2016-08-18 97 plt->lit[idx] = val;
66e94ba3c8ea5f Ard Biesheuvel 2016-08-18 98
66e94ba3c8ea5f Ard Biesheuvel 2016-08-18 99 return (u32)&plt->ldr[idx];
7d485f647c1f4a Ard Biesheuvel 2014-11-24 100 }
7d485f647c1f4a Ard Biesheuvel 2014-11-24 101
---
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[kbuild] arch/arm/kernel/module-plts.c:65 get_module_plt() warn: we never enter this loop
CC: kbuild-...@lists.01.org
CC: linux-ker...@vger.kernel.org
TO: Alex Sverdlin
CC: "Russell King (Oracle)"
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
master
head: 8ab774587903771821b59471cc723bba6d893942
commit: 79f32b221b18c15a98507b101ef4beb52444cc6f ARM: 9079/1: ftrace: Add
MODULE_PLTS support
date: 5 months ago
:: branch date: 25 hours ago
:: commit date: 5 months ago
config: arm-randconfig-m031-20211104 (attached as .config)
compiler: arm-linux-gnueabi-gcc (GCC) 11.2.0
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot
Reported-by: Dan Carpenter
smatch warnings:
arch/arm/kernel/module-plts.c:65 get_module_plt() warn: we never enter this loop
vim +65 arch/arm/kernel/module-plts.c
79f32b221b18c15 Alex Sverdlin 2021-05-05 50
7d485f647c1f4a6 Ard Biesheuvel 2014-11-24 51 u32 get_module_plt(struct
module *mod, unsigned long loc, Elf32_Addr val)
7d485f647c1f4a6 Ard Biesheuvel 2014-11-24 52 {
b7ede5a1f5905ac Ard Biesheuvel 2017-02-22 53 struct mod_plt_sec
*pltsec = !in_init(mod, loc) ? &mod->arch.core :
b7ede5a1f5905ac Ard Biesheuvel 2017-02-22 54
&mod->arch.init;
79f32b221b18c15 Alex Sverdlin 2021-05-05 55 struct plt_entries *plt;
79f32b221b18c15 Alex Sverdlin 2021-05-05 56 int idx;
79f32b221b18c15 Alex Sverdlin 2021-05-05 57
79f32b221b18c15 Alex Sverdlin 2021-05-05 58 /* cache the address,
ELF header is available only during module load */
79f32b221b18c15 Alex Sverdlin 2021-05-05 59 if (!pltsec->plt_ent)
79f32b221b18c15 Alex Sverdlin 2021-05-05 60 pltsec->plt_ent
= (struct plt_entries *)pltsec->plt->sh_addr;
79f32b221b18c15 Alex Sverdlin 2021-05-05 61 plt = pltsec->plt_ent;
b7ede5a1f5905ac Ard Biesheuvel 2017-02-22 62
79f32b221b18c15 Alex Sverdlin 2021-05-05 63 prealloc_fixed(pltsec,
plt);
79f32b221b18c15 Alex Sverdlin 2021-05-05 64
79f32b221b18c15 Alex Sverdlin 2021-05-05 @65 for (idx = 0; idx <
ARRAY_SIZE(fixed_plts); ++idx)
79f32b221b18c15 Alex Sverdlin 2021-05-05 66 if
(plt->lit[idx] == val)
79f32b221b18c15 Alex Sverdlin 2021-05-05 67 return
(u32)&plt->ldr[idx];
35fa91eed817d2c Ard Biesheuvel 2016-08-16 68
79f32b221b18c15 Alex Sverdlin 2021-05-05 69 idx = 0;
66e94ba3c8ea5ff Ard Biesheuvel 2016-08-18 70 /*
66e94ba3c8ea5ff Ard Biesheuvel 2016-08-18 71 * Look for an existing
entry pointing to 'val'. Given that the
66e94ba3c8ea5ff Ard Biesheuvel 2016-08-18 72 * relocations are
sorted, this will be the last entry we allocated.
66e94ba3c8ea5ff Ard Biesheuvel 2016-08-18 73 * (if one exists).
66e94ba3c8ea5ff Ard Biesheuvel 2016-08-18 74 */
b7ede5a1f5905ac Ard Biesheuvel 2017-02-22 75 if (pltsec->plt_count >
0) {
b7ede5a1f5905ac Ard Biesheuvel 2017-02-22 76 plt +=
(pltsec->plt_count - 1) / PLT_ENT_COUNT;
b7ede5a1f5905ac Ard Biesheuvel 2017-02-22 77 idx =
(pltsec->plt_count - 1) % PLT_ENT_COUNT;
7d485f647c1f4a6 Ard Biesheuvel 2014-11-24 78
66e94ba3c8ea5ff Ard Biesheuvel 2016-08-18 79 if
(plt->lit[idx] == val)
66e94ba3c8ea5ff Ard Biesheuvel 2016-08-18 80 return
(u32)&plt->ldr[idx];
66e94ba3c8ea5ff Ard Biesheuvel 2016-08-18 81
66e94ba3c8ea5ff Ard Biesheuvel 2016-08-18 82 idx = (idx + 1)
% PLT_ENT_COUNT;
66e94ba3c8ea5ff Ard Biesheuvel 2016-08-18 83 if (!idx)
66e94ba3c8ea5ff Ard Biesheuvel 2016-08-18 84 plt++;
66e94ba3c8ea5ff Ard Biesheuvel 2016-08-18 85 }
66e94ba3c8ea5ff Ard Biesheuvel 2016-08-18 86
b7ede5a1f5905ac Ard Biesheuvel 2017-02-22 87 pltsec->plt_count++;
b7ede5a1f5905ac Ard Biesheuvel 2017-02-22 88
BUG_ON(pltsec->plt_count * PLT_ENT_SIZE > pltsec->plt->sh_size);
7d485f647c1f4a6 Ard Biesheuvel 2014-11-24 89
66e94ba3c8ea5ff Ard Biesheuvel 2016-08-18 90 if (!idx)
7d485f647c1f4a6 Ard Biesheuvel 2014-11-24 91 /* Populate a
new set of entries */
7d485f647c1f4a6 Ard Biesheuvel 2014-11-24 92 *plt = (struct
plt_entries){
7d485f647c1f4a6 Ard Biesheuvel 2014-11-24 93 { [0
... PLT_ENT_COUNT - 1] = PLT_ENT_LDR, },
7d485f647c1f4a6 Ard Biesheuvel 2014-11-24 94 { val, }
7d485f647c1f4a6 Ard Biesheuvel 2014-11-24 95 };
66e94ba3c8ea5ff Ard Biesheuvel 2016-08-18 96 else
66e94ba3c8ea5ff Ard Biesheuvel 2016-08-18 97 plt->lit[idx] =
val;
66e94ba3c8ea5ff Ard Biesheuvel 2016-08-18 98
66e94ba3c8ea5ff Ard Biesheuvel 2016-08-18 99 return
(u32)&plt->ldr[idx];
7d485f647c1f4a6 Ard Biesheuvel 2014-11-24 100 }
7d485f647c1f4a6 Ard Bie
[kbuild] arch/arm/kernel/module-plts.c:65 get_module_plt() warn: we never enter this loop
CC: kbuild-...@lists.01.org
CC: linux-ker...@vger.kernel.org
TO: Alex Sverdlin
CC: "Russell King (Oracle)"
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
master
head: 6b75d88fa81b122cce37ebf17428a849ccd3d0f1
commit: 79f32b221b18c15a98507b101ef4beb52444cc6f ARM: 9079/1: ftrace: Add
MODULE_PLTS support
date: 5 months ago
:: branch date: 24 hours ago
:: commit date: 5 months ago
config: arm-randconfig-m031-20211015 (attached as .config)
compiler: arm-linux-gnueabi-gcc (GCC) 11.2.0
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot
Reported-by: Dan Carpenter
smatch warnings:
arch/arm/kernel/module-plts.c:65 get_module_plt() warn: we never enter this loop
vim +65 arch/arm/kernel/module-plts.c
79f32b221b18c1 Alex Sverdlin 2021-05-05 50
7d485f647c1f4a Ard Biesheuvel 2014-11-24 51 u32 get_module_plt(struct module
*mod, unsigned long loc, Elf32_Addr val)
7d485f647c1f4a Ard Biesheuvel 2014-11-24 52 {
b7ede5a1f5905a Ard Biesheuvel 2017-02-22 53 struct mod_plt_sec *pltsec =
!in_init(mod, loc) ? &mod->arch.core :
b7ede5a1f5905a Ard Biesheuvel 2017-02-22 54
&mod->arch.init;
79f32b221b18c1 Alex Sverdlin 2021-05-05 55 struct plt_entries *plt;
79f32b221b18c1 Alex Sverdlin 2021-05-05 56 int idx;
79f32b221b18c1 Alex Sverdlin 2021-05-05 57
79f32b221b18c1 Alex Sverdlin 2021-05-05 58 /* cache the address, ELF
header is available only during module load */
79f32b221b18c1 Alex Sverdlin 2021-05-05 59 if (!pltsec->plt_ent)
79f32b221b18c1 Alex Sverdlin 2021-05-05 60 pltsec->plt_ent =
(struct plt_entries *)pltsec->plt->sh_addr;
79f32b221b18c1 Alex Sverdlin 2021-05-05 61 plt = pltsec->plt_ent;
b7ede5a1f5905a Ard Biesheuvel 2017-02-22 62
79f32b221b18c1 Alex Sverdlin 2021-05-05 63 prealloc_fixed(pltsec, plt);
79f32b221b18c1 Alex Sverdlin 2021-05-05 64
79f32b221b18c1 Alex Sverdlin 2021-05-05 @65 for (idx = 0; idx <
ARRAY_SIZE(fixed_plts); ++idx)
79f32b221b18c1 Alex Sverdlin 2021-05-05 66 if (plt->lit[idx] ==
val)
79f32b221b18c1 Alex Sverdlin 2021-05-05 67 return
(u32)&plt->ldr[idx];
35fa91eed817d2 Ard Biesheuvel 2016-08-16 68
79f32b221b18c1 Alex Sverdlin 2021-05-05 69 idx = 0;
66e94ba3c8ea5f Ard Biesheuvel 2016-08-18 70 /*
66e94ba3c8ea5f Ard Biesheuvel 2016-08-18 71* Look for an existing entry
pointing to 'val'. Given that the
66e94ba3c8ea5f Ard Biesheuvel 2016-08-18 72* relocations are sorted, this
will be the last entry we allocated.
66e94ba3c8ea5f Ard Biesheuvel 2016-08-18 73* (if one exists).
66e94ba3c8ea5f Ard Biesheuvel 2016-08-18 74*/
b7ede5a1f5905a Ard Biesheuvel 2017-02-22 75 if (pltsec->plt_count > 0) {
b7ede5a1f5905a Ard Biesheuvel 2017-02-22 76 plt +=
(pltsec->plt_count - 1) / PLT_ENT_COUNT;
b7ede5a1f5905a Ard Biesheuvel 2017-02-22 77 idx =
(pltsec->plt_count - 1) % PLT_ENT_COUNT;
7d485f647c1f4a Ard Biesheuvel 2014-11-24 78
66e94ba3c8ea5f Ard Biesheuvel 2016-08-18 79 if (plt->lit[idx] ==
val)
66e94ba3c8ea5f Ard Biesheuvel 2016-08-18 80 return
(u32)&plt->ldr[idx];
66e94ba3c8ea5f Ard Biesheuvel 2016-08-18 81
66e94ba3c8ea5f Ard Biesheuvel 2016-08-18 82 idx = (idx + 1) %
PLT_ENT_COUNT;
66e94ba3c8ea5f Ard Biesheuvel 2016-08-18 83 if (!idx)
66e94ba3c8ea5f Ard Biesheuvel 2016-08-18 84 plt++;
66e94ba3c8ea5f Ard Biesheuvel 2016-08-18 85 }
66e94ba3c8ea5f Ard Biesheuvel 2016-08-18 86
b7ede5a1f5905a Ard Biesheuvel 2017-02-22 87 pltsec->plt_count++;
b7ede5a1f5905a Ard Biesheuvel 2017-02-22 88 BUG_ON(pltsec->plt_count *
PLT_ENT_SIZE > pltsec->plt->sh_size);
7d485f647c1f4a Ard Biesheuvel 2014-11-24 89
66e94ba3c8ea5f Ard Biesheuvel 2016-08-18 90 if (!idx)
7d485f647c1f4a Ard Biesheuvel 2014-11-24 91 /* Populate a new set
of entries */
7d485f647c1f4a Ard Biesheuvel 2014-11-24 92 *plt = (struct
plt_entries){
7d485f647c1f4a Ard Biesheuvel 2014-11-24 93 { [0 ...
PLT_ENT_COUNT - 1] = PLT_ENT_LDR, },
7d485f647c1f4a Ard Biesheuvel 2014-11-24 94 { val, }
7d485f647c1f4a Ard Biesheuvel 2014-11-24 95 };
66e94ba3c8ea5f Ard Biesheuvel 2016-08-18 96 else
66e94ba3c8ea5f Ard Biesheuvel 2016-08-18 97 plt->lit[idx] = val;
66e94ba3c8ea5f Ard Biesheuvel 2016-08-18 98
66e94ba3c8ea5f Ard Biesheuvel 2016-08-18 99 return (u32)&plt->ldr[idx];
7d485f647c1f4a Ard Biesheuvel 2014-11-24 100 }
7d485f647c1f4a Ard Biesheuvel 2014-11-24 101
---
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.config.gz
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[kbuild] arch/arm/kernel/module-plts.c:65 get_module_plt() warn: we never enter this loop
CC: kbuild-...@lists.01.org
CC: linux-ker...@vger.kernel.org
TO: Alex Sverdlin
CC: "Russell King (Oracle)"
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
master
head: 6b75d88fa81b122cce37ebf17428a849ccd3d0f1
commit: 79f32b221b18c15a98507b101ef4beb52444cc6f ARM: 9079/1: ftrace: Add
MODULE_PLTS support
date: 5 months ago
:: branch date: 13 hours ago
:: commit date: 5 months ago
config: arm-randconfig-m031-20211104 (attached as .config)
compiler: arm-linux-gnueabi-gcc (GCC) 11.2.0
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot
Reported-by: Dan Carpenter
smatch warnings:
arch/arm/kernel/module-plts.c:65 get_module_plt() warn: we never enter this loop
vim +65 arch/arm/kernel/module-plts.c
79f32b221b18c1 Alex Sverdlin 2021-05-05 50
7d485f647c1f4a Ard Biesheuvel 2014-11-24 51 u32 get_module_plt(struct module
*mod, unsigned long loc, Elf32_Addr val)
7d485f647c1f4a Ard Biesheuvel 2014-11-24 52 {
b7ede5a1f5905a Ard Biesheuvel 2017-02-22 53 struct mod_plt_sec *pltsec =
!in_init(mod, loc) ? &mod->arch.core :
b7ede5a1f5905a Ard Biesheuvel 2017-02-22 54
&mod->arch.init;
79f32b221b18c1 Alex Sverdlin 2021-05-05 55 struct plt_entries *plt;
79f32b221b18c1 Alex Sverdlin 2021-05-05 56 int idx;
79f32b221b18c1 Alex Sverdlin 2021-05-05 57
79f32b221b18c1 Alex Sverdlin 2021-05-05 58 /* cache the address, ELF
header is available only during module load */
79f32b221b18c1 Alex Sverdlin 2021-05-05 59 if (!pltsec->plt_ent)
79f32b221b18c1 Alex Sverdlin 2021-05-05 60 pltsec->plt_ent =
(struct plt_entries *)pltsec->plt->sh_addr;
79f32b221b18c1 Alex Sverdlin 2021-05-05 61 plt = pltsec->plt_ent;
b7ede5a1f5905a Ard Biesheuvel 2017-02-22 62
79f32b221b18c1 Alex Sverdlin 2021-05-05 63 prealloc_fixed(pltsec, plt);
79f32b221b18c1 Alex Sverdlin 2021-05-05 64
79f32b221b18c1 Alex Sverdlin 2021-05-05 @65 for (idx = 0; idx <
ARRAY_SIZE(fixed_plts); ++idx)
79f32b221b18c1 Alex Sverdlin 2021-05-05 66 if (plt->lit[idx] ==
val)
79f32b221b18c1 Alex Sverdlin 2021-05-05 67 return
(u32)&plt->ldr[idx];
35fa91eed817d2 Ard Biesheuvel 2016-08-16 68
79f32b221b18c1 Alex Sverdlin 2021-05-05 69 idx = 0;
66e94ba3c8ea5f Ard Biesheuvel 2016-08-18 70 /*
66e94ba3c8ea5f Ard Biesheuvel 2016-08-18 71* Look for an existing entry
pointing to 'val'. Given that the
66e94ba3c8ea5f Ard Biesheuvel 2016-08-18 72* relocations are sorted, this
will be the last entry we allocated.
66e94ba3c8ea5f Ard Biesheuvel 2016-08-18 73* (if one exists).
66e94ba3c8ea5f Ard Biesheuvel 2016-08-18 74*/
b7ede5a1f5905a Ard Biesheuvel 2017-02-22 75 if (pltsec->plt_count > 0) {
b7ede5a1f5905a Ard Biesheuvel 2017-02-22 76 plt +=
(pltsec->plt_count - 1) / PLT_ENT_COUNT;
b7ede5a1f5905a Ard Biesheuvel 2017-02-22 77 idx =
(pltsec->plt_count - 1) % PLT_ENT_COUNT;
7d485f647c1f4a Ard Biesheuvel 2014-11-24 78
66e94ba3c8ea5f Ard Biesheuvel 2016-08-18 79 if (plt->lit[idx] ==
val)
66e94ba3c8ea5f Ard Biesheuvel 2016-08-18 80 return
(u32)&plt->ldr[idx];
66e94ba3c8ea5f Ard Biesheuvel 2016-08-18 81
66e94ba3c8ea5f Ard Biesheuvel 2016-08-18 82 idx = (idx + 1) %
PLT_ENT_COUNT;
66e94ba3c8ea5f Ard Biesheuvel 2016-08-18 83 if (!idx)
66e94ba3c8ea5f Ard Biesheuvel 2016-08-18 84 plt++;
66e94ba3c8ea5f Ard Biesheuvel 2016-08-18 85 }
66e94ba3c8ea5f Ard Biesheuvel 2016-08-18 86
b7ede5a1f5905a Ard Biesheuvel 2017-02-22 87 pltsec->plt_count++;
b7ede5a1f5905a Ard Biesheuvel 2017-02-22 88 BUG_ON(pltsec->plt_count *
PLT_ENT_SIZE > pltsec->plt->sh_size);
7d485f647c1f4a Ard Biesheuvel 2014-11-24 89
66e94ba3c8ea5f Ard Biesheuvel 2016-08-18 90 if (!idx)
7d485f647c1f4a Ard Biesheuvel 2014-11-24 91 /* Populate a new set
of entries */
7d485f647c1f4a Ard Biesheuvel 2014-11-24 92 *plt = (struct
plt_entries){
7d485f647c1f4a Ard Biesheuvel 2014-11-24 93 { [0 ...
PLT_ENT_COUNT - 1] = PLT_ENT_LDR, },
7d485f647c1f4a Ard Biesheuvel 2014-11-24 94 { val, }
7d485f647c1f4a Ard Biesheuvel 2014-11-24 95 };
66e94ba3c8ea5f Ard Biesheuvel 2016-08-18 96 else
66e94ba3c8ea5f Ard Biesheuvel 2016-08-18 97 plt->lit[idx] = val;
66e94ba3c8ea5f Ard Biesheuvel 2016-08-18 98
66e94ba3c8ea5f Ard Biesheuvel 2016-08-18 99 return (u32)&plt->ldr[idx];
7d485f647c1f4a Ard Biesheuvel 2014-11-24 100 }
7d485f647c1f4a Ard Biesheuvel 2014-11-24 101
---
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.config.gz
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[kbuild] arch/arm/kernel/module-plts.c:65 get_module_plt() warn: we never enter this loop
CC: kbuild-...@lists.01.org
CC: linux-ker...@vger.kernel.org
TO: Alex Sverdlin
CC: "Russell King (Oracle)"
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
master
head: d6d09a6942050f21b065a134169002b4d6b701ef
commit: 79f32b221b18c15a98507b101ef4beb52444cc6f ARM: 9079/1: ftrace: Add
MODULE_PLTS support
date: 2 months ago
:: branch date: 22 hours ago
:: commit date: 2 months ago
config: arm-randconfig-m031-20210818 (attached as .config)
compiler: arm-linux-gnueabi-gcc (GCC) 11.2.0
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot
Reported-by: Dan Carpenter
smatch warnings:
arch/arm/kernel/module-plts.c:65 get_module_plt() warn: we never enter this loop
vim +65 arch/arm/kernel/module-plts.c
79f32b221b18c1 Alex Sverdlin 2021-05-05 50
7d485f647c1f4a Ard Biesheuvel 2014-11-24 51 u32 get_module_plt(struct module
*mod, unsigned long loc, Elf32_Addr val)
7d485f647c1f4a Ard Biesheuvel 2014-11-24 52 {
b7ede5a1f5905a Ard Biesheuvel 2017-02-22 53 struct mod_plt_sec *pltsec =
!in_init(mod, loc) ? &mod->arch.core :
b7ede5a1f5905a Ard Biesheuvel 2017-02-22 54
&mod->arch.init;
79f32b221b18c1 Alex Sverdlin 2021-05-05 55 struct plt_entries *plt;
79f32b221b18c1 Alex Sverdlin 2021-05-05 56 int idx;
79f32b221b18c1 Alex Sverdlin 2021-05-05 57
79f32b221b18c1 Alex Sverdlin 2021-05-05 58 /* cache the address, ELF
header is available only during module load */
79f32b221b18c1 Alex Sverdlin 2021-05-05 59 if (!pltsec->plt_ent)
79f32b221b18c1 Alex Sverdlin 2021-05-05 60 pltsec->plt_ent =
(struct plt_entries *)pltsec->plt->sh_addr;
79f32b221b18c1 Alex Sverdlin 2021-05-05 61 plt = pltsec->plt_ent;
b7ede5a1f5905a Ard Biesheuvel 2017-02-22 62
79f32b221b18c1 Alex Sverdlin 2021-05-05 63 prealloc_fixed(pltsec, plt);
79f32b221b18c1 Alex Sverdlin 2021-05-05 64
79f32b221b18c1 Alex Sverdlin 2021-05-05 @65 for (idx = 0; idx <
ARRAY_SIZE(fixed_plts); ++idx)
79f32b221b18c1 Alex Sverdlin 2021-05-05 66 if (plt->lit[idx] ==
val)
79f32b221b18c1 Alex Sverdlin 2021-05-05 67 return
(u32)&plt->ldr[idx];
35fa91eed817d2 Ard Biesheuvel 2016-08-16 68
79f32b221b18c1 Alex Sverdlin 2021-05-05 69 idx = 0;
66e94ba3c8ea5f Ard Biesheuvel 2016-08-18 70 /*
66e94ba3c8ea5f Ard Biesheuvel 2016-08-18 71* Look for an existing entry
pointing to 'val'. Given that the
66e94ba3c8ea5f Ard Biesheuvel 2016-08-18 72* relocations are sorted, this
will be the last entry we allocated.
66e94ba3c8ea5f Ard Biesheuvel 2016-08-18 73* (if one exists).
66e94ba3c8ea5f Ard Biesheuvel 2016-08-18 74*/
b7ede5a1f5905a Ard Biesheuvel 2017-02-22 75 if (pltsec->plt_count > 0) {
b7ede5a1f5905a Ard Biesheuvel 2017-02-22 76 plt +=
(pltsec->plt_count - 1) / PLT_ENT_COUNT;
b7ede5a1f5905a Ard Biesheuvel 2017-02-22 77 idx =
(pltsec->plt_count - 1) % PLT_ENT_COUNT;
7d485f647c1f4a Ard Biesheuvel 2014-11-24 78
66e94ba3c8ea5f Ard Biesheuvel 2016-08-18 79 if (plt->lit[idx] ==
val)
66e94ba3c8ea5f Ard Biesheuvel 2016-08-18 80 return
(u32)&plt->ldr[idx];
66e94ba3c8ea5f Ard Biesheuvel 2016-08-18 81
66e94ba3c8ea5f Ard Biesheuvel 2016-08-18 82 idx = (idx + 1) %
PLT_ENT_COUNT;
66e94ba3c8ea5f Ard Biesheuvel 2016-08-18 83 if (!idx)
66e94ba3c8ea5f Ard Biesheuvel 2016-08-18 84 plt++;
66e94ba3c8ea5f Ard Biesheuvel 2016-08-18 85 }
66e94ba3c8ea5f Ard Biesheuvel 2016-08-18 86
b7ede5a1f5905a Ard Biesheuvel 2017-02-22 87 pltsec->plt_count++;
b7ede5a1f5905a Ard Biesheuvel 2017-02-22 88 BUG_ON(pltsec->plt_count *
PLT_ENT_SIZE > pltsec->plt->sh_size);
7d485f647c1f4a Ard Biesheuvel 2014-11-24 89
66e94ba3c8ea5f Ard Biesheuvel 2016-08-18 90 if (!idx)
7d485f647c1f4a Ard Biesheuvel 2014-11-24 91 /* Populate a new set
of entries */
7d485f647c1f4a Ard Biesheuvel 2014-11-24 92 *plt = (struct
plt_entries){
7d485f647c1f4a Ard Biesheuvel 2014-11-24 93 { [0 ...
PLT_ENT_COUNT - 1] = PLT_ENT_LDR, },
7d485f647c1f4a Ard Biesheuvel 2014-11-24 94 { val, }
7d485f647c1f4a Ard Biesheuvel 2014-11-24 95 };
66e94ba3c8ea5f Ard Biesheuvel 2016-08-18 96 else
66e94ba3c8ea5f Ard Biesheuvel 2016-08-18 97 plt->lit[idx] = val;
66e94ba3c8ea5f Ard Biesheuvel 2016-08-18 98
66e94ba3c8ea5f Ard Biesheuvel 2016-08-18 99 return (u32)&plt->ldr[idx];
7d485f647c1f4a Ard Biesheuvel 2014-11-24 100 }
7d485f647c1f4a Ard Biesheuvel 2014-11-24 101
---
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