* arch/arc/kernel/signal.c:79 save_arcv2_regs() warn: maybe return -EFAULT instead of the bytes remaining?
@ 2021-12-07 8:58 kernel test robot
0 siblings, 0 replies; 5+ messages in thread
From: kernel test robot @ 2021-12-07 8:58 UTC (permalink / raw)
To: kbuild
[-- Attachment #1: Type: text/plain, Size: 3920 bytes --]
CC: kbuild-all(a)lists.01.org
CC: linux-kernel(a)vger.kernel.org
TO: Vineet Gupta <vgupta@synopsys.com>
CC: linux-snps-arc(a)lists.infradead.org
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: cd8c917a56f20f48748dd43d9ae3caff51d5b987
commit: 96f1b00138cb8f04c742c82d0a7c460b2202e887 ARCv2: save ABI registers across signal handling
date: 6 months ago
:::::: branch date: 8 hours ago
:::::: commit date: 6 months ago
config: arc-randconfig-m031-20211207 (https://download.01.org/0day-ci/archive/20211207/202112071619.EELmRDVg-lkp(a)intel.com/config)
compiler: arceb-elf-gcc (GCC) 11.2.0
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
New smatch warnings:
arch/arc/kernel/signal.c:79 save_arcv2_regs() warn: maybe return -EFAULT instead of the bytes remaining?
arch/arc/kernel/signal.c:96 restore_arcv2_regs() warn: maybe return -EFAULT instead of the bytes remaining?
Old smatch warnings:
arch/arc/kernel/signal.c:198 sys_rt_sigreturn() error: uninitialized symbol 'sp'.
arch/arc/include/asm/thread_info.h:65 current_thread_info() error: uninitialized symbol 'sp'.
arch/arc/kernel/signal.c:297 setup_rt_frame() warn: ignoring unreachable code.
arch/arc/kernel/signal.c:312 setup_rt_frame() warn: ignoring unreachable code.
vim +79 arch/arc/kernel/signal.c
c3581039b6c51a Vineet Gupta 2013-01-18 63
96f1b00138cb8f Vineet Gupta 2021-06-08 64 static int save_arcv2_regs(struct sigcontext *mctx, struct pt_regs *regs)
96f1b00138cb8f Vineet Gupta 2021-06-08 65 {
96f1b00138cb8f Vineet Gupta 2021-06-08 66 int err = 0;
96f1b00138cb8f Vineet Gupta 2021-06-08 67 #ifndef CONFIG_ISA_ARCOMPACT
96f1b00138cb8f Vineet Gupta 2021-06-08 68 struct user_regs_arcv2 v2abi;
96f1b00138cb8f Vineet Gupta 2021-06-08 69
96f1b00138cb8f Vineet Gupta 2021-06-08 70 v2abi.r30 = regs->r30;
96f1b00138cb8f Vineet Gupta 2021-06-08 71 #ifdef CONFIG_ARC_HAS_ACCL_REGS
96f1b00138cb8f Vineet Gupta 2021-06-08 72 v2abi.r58 = regs->r58;
96f1b00138cb8f Vineet Gupta 2021-06-08 73 v2abi.r59 = regs->r59;
96f1b00138cb8f Vineet Gupta 2021-06-08 74 #else
96f1b00138cb8f Vineet Gupta 2021-06-08 75 v2abi.r58 = v2abi.r59 = 0;
96f1b00138cb8f Vineet Gupta 2021-06-08 76 #endif
96f1b00138cb8f Vineet Gupta 2021-06-08 77 err = __copy_to_user(&mctx->v2abi, &v2abi, sizeof(v2abi));
96f1b00138cb8f Vineet Gupta 2021-06-08 78 #endif
96f1b00138cb8f Vineet Gupta 2021-06-08 @79 return err;
96f1b00138cb8f Vineet Gupta 2021-06-08 80 }
96f1b00138cb8f Vineet Gupta 2021-06-08 81
96f1b00138cb8f Vineet Gupta 2021-06-08 82 static int restore_arcv2_regs(struct sigcontext *mctx, struct pt_regs *regs)
96f1b00138cb8f Vineet Gupta 2021-06-08 83 {
96f1b00138cb8f Vineet Gupta 2021-06-08 84 int err = 0;
96f1b00138cb8f Vineet Gupta 2021-06-08 85 #ifndef CONFIG_ISA_ARCOMPACT
96f1b00138cb8f Vineet Gupta 2021-06-08 86 struct user_regs_arcv2 v2abi;
96f1b00138cb8f Vineet Gupta 2021-06-08 87
96f1b00138cb8f Vineet Gupta 2021-06-08 88 err = __copy_from_user(&v2abi, &mctx->v2abi, sizeof(v2abi));
96f1b00138cb8f Vineet Gupta 2021-06-08 89
96f1b00138cb8f Vineet Gupta 2021-06-08 90 regs->r30 = v2abi.r30;
96f1b00138cb8f Vineet Gupta 2021-06-08 91 #ifdef CONFIG_ARC_HAS_ACCL_REGS
96f1b00138cb8f Vineet Gupta 2021-06-08 92 regs->r58 = v2abi.r58;
96f1b00138cb8f Vineet Gupta 2021-06-08 93 regs->r59 = v2abi.r59;
96f1b00138cb8f Vineet Gupta 2021-06-08 94 #endif
96f1b00138cb8f Vineet Gupta 2021-06-08 95 #endif
96f1b00138cb8f Vineet Gupta 2021-06-08 @96 return err;
96f1b00138cb8f Vineet Gupta 2021-06-08 97 }
96f1b00138cb8f Vineet Gupta 2021-06-08 98
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all(a)lists.01.org
^ permalink raw reply [flat|nested] 5+ messages in thread
* arch/arc/kernel/signal.c:79 save_arcv2_regs() warn: maybe return -EFAULT instead of the bytes remaining?
@ 2022-02-11 20:22 kernel test robot
0 siblings, 0 replies; 5+ messages in thread
From: kernel test robot @ 2022-02-11 20:22 UTC (permalink / raw)
To: kbuild
[-- Attachment #1: Type: text/plain, Size: 3955 bytes --]
CC: kbuild-all(a)lists.01.org
CC: linux-kernel(a)vger.kernel.org
TO: Vineet Gupta <vgupta@synopsys.com>
CC: linux-snps-arc(a)lists.infradead.org
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: f1baf68e1383f6ed93eb9cff2866d46562607a43
commit: 96f1b00138cb8f04c742c82d0a7c460b2202e887 ARCv2: save ABI registers across signal handling
date: 8 months ago
:::::: branch date: 20 hours ago
:::::: commit date: 8 months ago
config: arc-randconfig-m031-20220211 (https://download.01.org/0day-ci/archive/20220212/202202120409.aOxVGwa3-lkp(a)intel.com/config)
compiler: arc-elf-gcc (GCC) 11.2.0
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
New smatch warnings:
arch/arc/kernel/signal.c:79 save_arcv2_regs() warn: maybe return -EFAULT instead of the bytes remaining?
arch/arc/kernel/signal.c:96 restore_arcv2_regs() warn: maybe return -EFAULT instead of the bytes remaining?
Old smatch warnings:
arch/arc/kernel/signal.c:198 sys_rt_sigreturn() error: uninitialized symbol 'sp'.
arch/arc/include/asm/thread_info.h:65 current_thread_info() error: uninitialized symbol 'sp'.
arch/arc/kernel/signal.c:297 setup_rt_frame() warn: ignoring unreachable code.
arch/arc/kernel/signal.c:312 setup_rt_frame() warn: ignoring unreachable code.
vim +79 arch/arc/kernel/signal.c
c3581039b6c51a7 Vineet Gupta 2013-01-18 63
96f1b00138cb8f0 Vineet Gupta 2021-06-08 64 static int save_arcv2_regs(struct sigcontext *mctx, struct pt_regs *regs)
96f1b00138cb8f0 Vineet Gupta 2021-06-08 65 {
96f1b00138cb8f0 Vineet Gupta 2021-06-08 66 int err = 0;
96f1b00138cb8f0 Vineet Gupta 2021-06-08 67 #ifndef CONFIG_ISA_ARCOMPACT
96f1b00138cb8f0 Vineet Gupta 2021-06-08 68 struct user_regs_arcv2 v2abi;
96f1b00138cb8f0 Vineet Gupta 2021-06-08 69
96f1b00138cb8f0 Vineet Gupta 2021-06-08 70 v2abi.r30 = regs->r30;
96f1b00138cb8f0 Vineet Gupta 2021-06-08 71 #ifdef CONFIG_ARC_HAS_ACCL_REGS
96f1b00138cb8f0 Vineet Gupta 2021-06-08 72 v2abi.r58 = regs->r58;
96f1b00138cb8f0 Vineet Gupta 2021-06-08 73 v2abi.r59 = regs->r59;
96f1b00138cb8f0 Vineet Gupta 2021-06-08 74 #else
96f1b00138cb8f0 Vineet Gupta 2021-06-08 75 v2abi.r58 = v2abi.r59 = 0;
96f1b00138cb8f0 Vineet Gupta 2021-06-08 76 #endif
96f1b00138cb8f0 Vineet Gupta 2021-06-08 77 err = __copy_to_user(&mctx->v2abi, &v2abi, sizeof(v2abi));
96f1b00138cb8f0 Vineet Gupta 2021-06-08 78 #endif
96f1b00138cb8f0 Vineet Gupta 2021-06-08 @79 return err;
96f1b00138cb8f0 Vineet Gupta 2021-06-08 80 }
96f1b00138cb8f0 Vineet Gupta 2021-06-08 81
96f1b00138cb8f0 Vineet Gupta 2021-06-08 82 static int restore_arcv2_regs(struct sigcontext *mctx, struct pt_regs *regs)
96f1b00138cb8f0 Vineet Gupta 2021-06-08 83 {
96f1b00138cb8f0 Vineet Gupta 2021-06-08 84 int err = 0;
96f1b00138cb8f0 Vineet Gupta 2021-06-08 85 #ifndef CONFIG_ISA_ARCOMPACT
96f1b00138cb8f0 Vineet Gupta 2021-06-08 86 struct user_regs_arcv2 v2abi;
96f1b00138cb8f0 Vineet Gupta 2021-06-08 87
96f1b00138cb8f0 Vineet Gupta 2021-06-08 88 err = __copy_from_user(&v2abi, &mctx->v2abi, sizeof(v2abi));
96f1b00138cb8f0 Vineet Gupta 2021-06-08 89
96f1b00138cb8f0 Vineet Gupta 2021-06-08 90 regs->r30 = v2abi.r30;
96f1b00138cb8f0 Vineet Gupta 2021-06-08 91 #ifdef CONFIG_ARC_HAS_ACCL_REGS
96f1b00138cb8f0 Vineet Gupta 2021-06-08 92 regs->r58 = v2abi.r58;
96f1b00138cb8f0 Vineet Gupta 2021-06-08 93 regs->r59 = v2abi.r59;
96f1b00138cb8f0 Vineet Gupta 2021-06-08 94 #endif
96f1b00138cb8f0 Vineet Gupta 2021-06-08 95 #endif
96f1b00138cb8f0 Vineet Gupta 2021-06-08 @96 return err;
96f1b00138cb8f0 Vineet Gupta 2021-06-08 97 }
96f1b00138cb8f0 Vineet Gupta 2021-06-08 98
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all(a)lists.01.org
^ permalink raw reply [flat|nested] 5+ messages in thread
* arch/arc/kernel/signal.c:79 save_arcv2_regs() warn: maybe return -EFAULT instead of the bytes remaining?
@ 2022-02-11 10:11 kernel test robot
0 siblings, 0 replies; 5+ messages in thread
From: kernel test robot @ 2022-02-11 10:11 UTC (permalink / raw)
To: kbuild
[-- Attachment #1: Type: text/plain, Size: 3919 bytes --]
CC: kbuild-all(a)lists.01.org
CC: linux-kernel(a)vger.kernel.org
TO: Vineet Gupta <vgupta@synopsys.com>
CC: linux-snps-arc(a)lists.infradead.org
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: f1baf68e1383f6ed93eb9cff2866d46562607a43
commit: 96f1b00138cb8f04c742c82d0a7c460b2202e887 ARCv2: save ABI registers across signal handling
date: 8 months ago
:::::: branch date: 10 hours ago
:::::: commit date: 8 months ago
config: arc-randconfig-m031-20220211 (https://download.01.org/0day-ci/archive/20220211/202202111827.ELj8LJIS-lkp(a)intel.com/config)
compiler: arc-elf-gcc (GCC) 11.2.0
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
New smatch warnings:
arch/arc/kernel/signal.c:79 save_arcv2_regs() warn: maybe return -EFAULT instead of the bytes remaining?
arch/arc/kernel/signal.c:96 restore_arcv2_regs() warn: maybe return -EFAULT instead of the bytes remaining?
Old smatch warnings:
arch/arc/kernel/signal.c:198 sys_rt_sigreturn() error: uninitialized symbol 'sp'.
arch/arc/include/asm/thread_info.h:65 current_thread_info() error: uninitialized symbol 'sp'.
arch/arc/kernel/signal.c:297 setup_rt_frame() warn: ignoring unreachable code.
arch/arc/kernel/signal.c:312 setup_rt_frame() warn: ignoring unreachable code.
vim +79 arch/arc/kernel/signal.c
c3581039b6c51a Vineet Gupta 2013-01-18 63
96f1b00138cb8f Vineet Gupta 2021-06-08 64 static int save_arcv2_regs(struct sigcontext *mctx, struct pt_regs *regs)
96f1b00138cb8f Vineet Gupta 2021-06-08 65 {
96f1b00138cb8f Vineet Gupta 2021-06-08 66 int err = 0;
96f1b00138cb8f Vineet Gupta 2021-06-08 67 #ifndef CONFIG_ISA_ARCOMPACT
96f1b00138cb8f Vineet Gupta 2021-06-08 68 struct user_regs_arcv2 v2abi;
96f1b00138cb8f Vineet Gupta 2021-06-08 69
96f1b00138cb8f Vineet Gupta 2021-06-08 70 v2abi.r30 = regs->r30;
96f1b00138cb8f Vineet Gupta 2021-06-08 71 #ifdef CONFIG_ARC_HAS_ACCL_REGS
96f1b00138cb8f Vineet Gupta 2021-06-08 72 v2abi.r58 = regs->r58;
96f1b00138cb8f Vineet Gupta 2021-06-08 73 v2abi.r59 = regs->r59;
96f1b00138cb8f Vineet Gupta 2021-06-08 74 #else
96f1b00138cb8f Vineet Gupta 2021-06-08 75 v2abi.r58 = v2abi.r59 = 0;
96f1b00138cb8f Vineet Gupta 2021-06-08 76 #endif
96f1b00138cb8f Vineet Gupta 2021-06-08 77 err = __copy_to_user(&mctx->v2abi, &v2abi, sizeof(v2abi));
96f1b00138cb8f Vineet Gupta 2021-06-08 78 #endif
96f1b00138cb8f Vineet Gupta 2021-06-08 @79 return err;
96f1b00138cb8f Vineet Gupta 2021-06-08 80 }
96f1b00138cb8f Vineet Gupta 2021-06-08 81
96f1b00138cb8f Vineet Gupta 2021-06-08 82 static int restore_arcv2_regs(struct sigcontext *mctx, struct pt_regs *regs)
96f1b00138cb8f Vineet Gupta 2021-06-08 83 {
96f1b00138cb8f Vineet Gupta 2021-06-08 84 int err = 0;
96f1b00138cb8f Vineet Gupta 2021-06-08 85 #ifndef CONFIG_ISA_ARCOMPACT
96f1b00138cb8f Vineet Gupta 2021-06-08 86 struct user_regs_arcv2 v2abi;
96f1b00138cb8f Vineet Gupta 2021-06-08 87
96f1b00138cb8f Vineet Gupta 2021-06-08 88 err = __copy_from_user(&v2abi, &mctx->v2abi, sizeof(v2abi));
96f1b00138cb8f Vineet Gupta 2021-06-08 89
96f1b00138cb8f Vineet Gupta 2021-06-08 90 regs->r30 = v2abi.r30;
96f1b00138cb8f Vineet Gupta 2021-06-08 91 #ifdef CONFIG_ARC_HAS_ACCL_REGS
96f1b00138cb8f Vineet Gupta 2021-06-08 92 regs->r58 = v2abi.r58;
96f1b00138cb8f Vineet Gupta 2021-06-08 93 regs->r59 = v2abi.r59;
96f1b00138cb8f Vineet Gupta 2021-06-08 94 #endif
96f1b00138cb8f Vineet Gupta 2021-06-08 95 #endif
96f1b00138cb8f Vineet Gupta 2021-06-08 @96 return err;
96f1b00138cb8f Vineet Gupta 2021-06-08 97 }
96f1b00138cb8f Vineet Gupta 2021-06-08 98
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all(a)lists.01.org
^ permalink raw reply [flat|nested] 5+ messages in thread
* arch/arc/kernel/signal.c:79 save_arcv2_regs() warn: maybe return -EFAULT instead of the bytes remaining?
@ 2021-12-08 10:58 kernel test robot
0 siblings, 0 replies; 5+ messages in thread
From: kernel test robot @ 2021-12-08 10:58 UTC (permalink / raw)
To: kbuild
[-- Attachment #1: Type: text/plain, Size: 3919 bytes --]
CC: kbuild-all(a)lists.01.org
CC: linux-kernel(a)vger.kernel.org
TO: Vineet Gupta <vgupta@synopsys.com>
CC: linux-snps-arc(a)lists.infradead.org
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: 2a987e65025e2b79c6d453b78cb5985ac6e5eb26
commit: 96f1b00138cb8f04c742c82d0a7c460b2202e887 ARCv2: save ABI registers across signal handling
date: 6 months ago
:::::: branch date: 11 hours ago
:::::: commit date: 6 months ago
config: arc-randconfig-m031-20211208 (https://download.01.org/0day-ci/archive/20211208/202112081802.yrPO9igg-lkp(a)intel.com/config)
compiler: arc-elf-gcc (GCC) 11.2.0
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
New smatch warnings:
arch/arc/kernel/signal.c:79 save_arcv2_regs() warn: maybe return -EFAULT instead of the bytes remaining?
arch/arc/kernel/signal.c:96 restore_arcv2_regs() warn: maybe return -EFAULT instead of the bytes remaining?
Old smatch warnings:
arch/arc/kernel/signal.c:198 sys_rt_sigreturn() error: uninitialized symbol 'sp'.
arch/arc/include/asm/thread_info.h:65 current_thread_info() error: uninitialized symbol 'sp'.
arch/arc/kernel/signal.c:297 setup_rt_frame() warn: ignoring unreachable code.
arch/arc/kernel/signal.c:312 setup_rt_frame() warn: ignoring unreachable code.
vim +79 arch/arc/kernel/signal.c
c3581039b6c51a Vineet Gupta 2013-01-18 63
96f1b00138cb8f Vineet Gupta 2021-06-08 64 static int save_arcv2_regs(struct sigcontext *mctx, struct pt_regs *regs)
96f1b00138cb8f Vineet Gupta 2021-06-08 65 {
96f1b00138cb8f Vineet Gupta 2021-06-08 66 int err = 0;
96f1b00138cb8f Vineet Gupta 2021-06-08 67 #ifndef CONFIG_ISA_ARCOMPACT
96f1b00138cb8f Vineet Gupta 2021-06-08 68 struct user_regs_arcv2 v2abi;
96f1b00138cb8f Vineet Gupta 2021-06-08 69
96f1b00138cb8f Vineet Gupta 2021-06-08 70 v2abi.r30 = regs->r30;
96f1b00138cb8f Vineet Gupta 2021-06-08 71 #ifdef CONFIG_ARC_HAS_ACCL_REGS
96f1b00138cb8f Vineet Gupta 2021-06-08 72 v2abi.r58 = regs->r58;
96f1b00138cb8f Vineet Gupta 2021-06-08 73 v2abi.r59 = regs->r59;
96f1b00138cb8f Vineet Gupta 2021-06-08 74 #else
96f1b00138cb8f Vineet Gupta 2021-06-08 75 v2abi.r58 = v2abi.r59 = 0;
96f1b00138cb8f Vineet Gupta 2021-06-08 76 #endif
96f1b00138cb8f Vineet Gupta 2021-06-08 77 err = __copy_to_user(&mctx->v2abi, &v2abi, sizeof(v2abi));
96f1b00138cb8f Vineet Gupta 2021-06-08 78 #endif
96f1b00138cb8f Vineet Gupta 2021-06-08 @79 return err;
96f1b00138cb8f Vineet Gupta 2021-06-08 80 }
96f1b00138cb8f Vineet Gupta 2021-06-08 81
96f1b00138cb8f Vineet Gupta 2021-06-08 82 static int restore_arcv2_regs(struct sigcontext *mctx, struct pt_regs *regs)
96f1b00138cb8f Vineet Gupta 2021-06-08 83 {
96f1b00138cb8f Vineet Gupta 2021-06-08 84 int err = 0;
96f1b00138cb8f Vineet Gupta 2021-06-08 85 #ifndef CONFIG_ISA_ARCOMPACT
96f1b00138cb8f Vineet Gupta 2021-06-08 86 struct user_regs_arcv2 v2abi;
96f1b00138cb8f Vineet Gupta 2021-06-08 87
96f1b00138cb8f Vineet Gupta 2021-06-08 88 err = __copy_from_user(&v2abi, &mctx->v2abi, sizeof(v2abi));
96f1b00138cb8f Vineet Gupta 2021-06-08 89
96f1b00138cb8f Vineet Gupta 2021-06-08 90 regs->r30 = v2abi.r30;
96f1b00138cb8f Vineet Gupta 2021-06-08 91 #ifdef CONFIG_ARC_HAS_ACCL_REGS
96f1b00138cb8f Vineet Gupta 2021-06-08 92 regs->r58 = v2abi.r58;
96f1b00138cb8f Vineet Gupta 2021-06-08 93 regs->r59 = v2abi.r59;
96f1b00138cb8f Vineet Gupta 2021-06-08 94 #endif
96f1b00138cb8f Vineet Gupta 2021-06-08 95 #endif
96f1b00138cb8f Vineet Gupta 2021-06-08 @96 return err;
96f1b00138cb8f Vineet Gupta 2021-06-08 97 }
96f1b00138cb8f Vineet Gupta 2021-06-08 98
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all(a)lists.01.org
^ permalink raw reply [flat|nested] 5+ messages in thread
* arch/arc/kernel/signal.c:79 save_arcv2_regs() warn: maybe return -EFAULT instead of the bytes remaining?
@ 2021-07-27 12:55 kernel test robot
0 siblings, 0 replies; 5+ messages in thread
From: kernel test robot @ 2021-07-27 12:55 UTC (permalink / raw)
To: kbuild
[-- Attachment #1: Type: text/plain, Size: 3845 bytes --]
CC: kbuild-all(a)lists.01.org
CC: linux-kernel(a)vger.kernel.org
TO: Vineet Gupta <vgupta@synopsys.com>
CC: linux-snps-arc(a)lists.infradead.org
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: ff1176468d368232b684f75e82563369208bc371
commit: 96f1b00138cb8f04c742c82d0a7c460b2202e887 ARCv2: save ABI registers across signal handling
date: 7 weeks ago
:::::: branch date: 2 days ago
:::::: commit date: 7 weeks ago
config: arc-randconfig-m031-20210727 (attached as .config)
compiler: arceb-elf-gcc (GCC) 10.3.0
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
New smatch warnings:
arch/arc/kernel/signal.c:79 save_arcv2_regs() warn: maybe return -EFAULT instead of the bytes remaining?
arch/arc/kernel/signal.c:96 restore_arcv2_regs() warn: maybe return -EFAULT instead of the bytes remaining?
Old smatch warnings:
arch/arc/kernel/signal.c:198 sys_rt_sigreturn() error: uninitialized symbol 'sp'.
arch/arc/include/asm/thread_info.h:65 current_thread_info() error: uninitialized symbol 'sp'.
arch/arc/kernel/signal.c:297 setup_rt_frame() warn: ignoring unreachable code.
arch/arc/kernel/signal.c:312 setup_rt_frame() warn: ignoring unreachable code.
vim +79 arch/arc/kernel/signal.c
c3581039b6c51a Vineet Gupta 2013-01-18 63
96f1b00138cb8f Vineet Gupta 2021-06-08 64 static int save_arcv2_regs(struct sigcontext *mctx, struct pt_regs *regs)
96f1b00138cb8f Vineet Gupta 2021-06-08 65 {
96f1b00138cb8f Vineet Gupta 2021-06-08 66 int err = 0;
96f1b00138cb8f Vineet Gupta 2021-06-08 67 #ifndef CONFIG_ISA_ARCOMPACT
96f1b00138cb8f Vineet Gupta 2021-06-08 68 struct user_regs_arcv2 v2abi;
96f1b00138cb8f Vineet Gupta 2021-06-08 69
96f1b00138cb8f Vineet Gupta 2021-06-08 70 v2abi.r30 = regs->r30;
96f1b00138cb8f Vineet Gupta 2021-06-08 71 #ifdef CONFIG_ARC_HAS_ACCL_REGS
96f1b00138cb8f Vineet Gupta 2021-06-08 72 v2abi.r58 = regs->r58;
96f1b00138cb8f Vineet Gupta 2021-06-08 73 v2abi.r59 = regs->r59;
96f1b00138cb8f Vineet Gupta 2021-06-08 74 #else
96f1b00138cb8f Vineet Gupta 2021-06-08 75 v2abi.r58 = v2abi.r59 = 0;
96f1b00138cb8f Vineet Gupta 2021-06-08 76 #endif
96f1b00138cb8f Vineet Gupta 2021-06-08 77 err = __copy_to_user(&mctx->v2abi, &v2abi, sizeof(v2abi));
96f1b00138cb8f Vineet Gupta 2021-06-08 78 #endif
96f1b00138cb8f Vineet Gupta 2021-06-08 @79 return err;
96f1b00138cb8f Vineet Gupta 2021-06-08 80 }
96f1b00138cb8f Vineet Gupta 2021-06-08 81
96f1b00138cb8f Vineet Gupta 2021-06-08 82 static int restore_arcv2_regs(struct sigcontext *mctx, struct pt_regs *regs)
96f1b00138cb8f Vineet Gupta 2021-06-08 83 {
96f1b00138cb8f Vineet Gupta 2021-06-08 84 int err = 0;
96f1b00138cb8f Vineet Gupta 2021-06-08 85 #ifndef CONFIG_ISA_ARCOMPACT
96f1b00138cb8f Vineet Gupta 2021-06-08 86 struct user_regs_arcv2 v2abi;
96f1b00138cb8f Vineet Gupta 2021-06-08 87
96f1b00138cb8f Vineet Gupta 2021-06-08 88 err = __copy_from_user(&v2abi, &mctx->v2abi, sizeof(v2abi));
96f1b00138cb8f Vineet Gupta 2021-06-08 89
96f1b00138cb8f Vineet Gupta 2021-06-08 90 regs->r30 = v2abi.r30;
96f1b00138cb8f Vineet Gupta 2021-06-08 91 #ifdef CONFIG_ARC_HAS_ACCL_REGS
96f1b00138cb8f Vineet Gupta 2021-06-08 92 regs->r58 = v2abi.r58;
96f1b00138cb8f Vineet Gupta 2021-06-08 93 regs->r59 = v2abi.r59;
96f1b00138cb8f Vineet Gupta 2021-06-08 94 #endif
96f1b00138cb8f Vineet Gupta 2021-06-08 95 #endif
96f1b00138cb8f Vineet Gupta 2021-06-08 @96 return err;
96f1b00138cb8f Vineet Gupta 2021-06-08 97 }
96f1b00138cb8f Vineet Gupta 2021-06-08 98
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all(a)lists.01.org
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2021-12-07 8:58 arch/arc/kernel/signal.c:79 save_arcv2_regs() warn: maybe return -EFAULT instead of the bytes remaining? kernel test robot
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