[kbuild-all] Re: [PATCH 05/43] asm: x86: instrument usercopy in get_user() and __put_user_size()

Hi Alexander, I love your patch! Perhaps something to improve: [auto build test WARNING on tip/x86/mm] [also build test WARNING on linus/master v5.16-rc5] [cannot apply to tip/x86/core hnaz-mm/master next-20211213] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use '--base' as documented in https://git-scm.com/docs/git-format-patch] url: https://github.com/0day-ci/linux/commits/Alexander-Potapenko/Add-KernelMe... base: https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git 35fa745286ac44ee26ed100c2bd2553368ad193b config: i386-randconfig-s002-20211214 (https://download.01.org/0day-ci/archive/20211215/202112150931.TDelnQbm-lk...) compiler: gcc-9 (Debian 9.3.0-22) 9.3.0 reproduce: # apt-get install sparse # sparse version: v0.6.4-dirty # https://github.com/0day-ci/linux/commit/3209eff1f0c7f4de1f9685c4692c7ad79... git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Alexander-Potapenko/Add-KernelMemorySanitizer-infrastructure/20211215-003033 git checkout 3209eff1f0c7f4de1f9685c4692c7ad79e8f225b # save the config file to linux build tree mkdir build_dir make W=1 C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=i386 SHELL=/bin/bash arch/x86/kernel/ kernel/ If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; sparse warnings: (new ones prefixed by >>) arch/x86/kernel/signal.c:359:9: sparse: sparse: cast removes address space '__user' of expression arch/x86/kernel/signal.c:359:9: sparse: sparse: cast removes address space '__user' of expression arch/x86/kernel/signal.c:359:9: sparse: sparse: cast removes address space '__user' of expression arch/x86/kernel/signal.c:359:9: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const volatile [noderef] __user *ptr @@ got unsigned long long [usertype] * @@ arch/x86/kernel/signal.c:359:9: sparse: expected void const volatile [noderef] __user *ptr arch/x86/kernel/signal.c:359:9: sparse: got unsigned long long [usertype] * arch/x86/kernel/signal.c:359:9: sparse: sparse: cast removes address space '__user' of expression arch/x86/kernel/signal.c:359:9: sparse: expected void [noderef] __user *to arch/x86/kernel/signal.c:359:9: sparse: got unsigned long long [usertype] * arch/x86/kernel/signal.c:359:9: sparse: sparse: cast removes address space '__user' of expression arch/x86/kernel/signal.c:359:9: sparse: sparse: cast removes address space '__user' of expression arch/x86/kernel/signal.c:359:9: sparse: sparse: cast removes address space '__user' of expression arch/x86/kernel/signal.c:359:9: sparse: sparse: cast removes address space '__user' of expression arch/x86/kernel/signal.c:359:9: sparse: sparse: cast removes address space '__user' of expression arch/x86/kernel/signal.c:359:9: sparse: sparse: cast removes address space '__user' of expression arch/x86/kernel/signal.c:359:9: sparse: sparse: cast removes address space '__user' of expression arch/x86/kernel/signal.c:359:9: sparse: sparse: cast removes address space '__user' of expression arch/x86/kernel/signal.c:359:9: sparse: sparse: cast removes address space '__user' of expression arch/x86/kernel/signal.c:359:9: sparse: sparse: cast removes address space '__user' of expression arch/x86/kernel/signal.c:419:9: sparse: sparse: cast removes address space '__user' of expression arch/x86/kernel/signal.c:419:9: sparse: sparse: cast removes address space '__user' of expression arch/x86/kernel/signal.c:419:9: sparse: sparse: cast removes address space '__user' of expression arch/x86/kernel/signal.c:419:9: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const volatile [noderef] __user *ptr @@ got unsigned long long [usertype] * @@ arch/x86/kernel/signal.c:419:9: sparse: expected void const volatile [noderef] __user *ptr arch/x86/kernel/signal.c:419:9: sparse: got unsigned long long [usertype] * arch/x86/kernel/signal.c:419:9: sparse: sparse: cast removes address space '__user' of expression arch/x86/kernel/signal.c:419:9: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void [noderef] __user *to @@ got unsigned long long [usertype] * @@ arch/x86/kernel/signal.c:419:9: sparse: expected void [noderef] __user *to arch/x86/kernel/signal.c:419:9: sparse: got unsigned long long [usertype] * arch/x86/kernel/signal.c:419:9: sparse: sparse: cast removes address space '__user' of expression arch/x86/kernel/signal.c:419:9: sparse: sparse: cast removes address space '__user' of expression arch/x86/kernel/signal.c:419:9: sparse: sparse: cast removes address space '__user' of expression arch/x86/kernel/signal.c:419:9: sparse: sparse: cast removes address space '__user' of expression arch/x86/kernel/signal.c:419:9: sparse: sparse: cast removes address space '__user' of expression arch/x86/kernel/signal.c:419:9: sparse: sparse: cast removes address space '__user' of expression arch/x86/kernel/signal.c:419:9: sparse: sparse: cast removes address space '__user' of expression arch/x86/kernel/signal.c:419:9: sparse: sparse: cast removes address space '__user' of expression arch/x86/kernel/signal.c:419:9: sparse: sparse: cast removes address space '__user' of expression arch/x86/kernel/signal.c:419:9: sparse: sparse: cast removes address space '__user' of expression arch/x86/kernel/signal.c:952:9: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct lockdep_map const *lock @@ got struct lockdep_map [noderef] __rcu * @@ arch/x86/kernel/signal.c:952:9: sparse: expected struct lockdep_map const *lock arch/x86/kernel/signal.c:952:9: sparse: got struct lockdep_map [noderef] __rcu * -- kernel/signal.c: note: in included file (through arch/x86/include/uapi/asm/signal.h, arch/x86/include/asm/signal.h, include/uapi/linux/signal.h, ...): include/uapi/asm-generic/signal-defs.h:83:29: sparse: sparse: multiple address spaces given kernel/signal.c:195:31: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct spinlock [usertype] *lock @@ got struct spinlock [noderef] __rcu * @@ kernel/signal.c:195:31: sparse: expected struct spinlock [usertype] *lock kernel/signal.c:195:31: sparse: got struct spinlock [noderef] __rcu * kernel/signal.c:198:33: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct spinlock [usertype] *lock @@ got struct spinlock [noderef] __rcu * @@ kernel/signal.c:198:33: sparse: expected struct spinlock [usertype] *lock kernel/signal.c:198:33: sparse: got struct spinlock [noderef] __rcu * kernel/signal.c:480:9: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct spinlock [usertype] *lock @@ got struct spinlock [noderef] __rcu * @@ kernel/signal.c:480:9: sparse: expected struct spinlock [usertype] *lock kernel/signal.c:480:9: sparse: got struct spinlock [noderef] __rcu * kernel/signal.c:484:34: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct spinlock [usertype] *lock @@ got struct spinlock [noderef] __rcu * @@ kernel/signal.c:484:34: sparse: expected struct spinlock [usertype] *lock kernel/signal.c:484:34: sparse: got struct spinlock [noderef] __rcu * kernel/signal.c:517:9: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct spinlock [usertype] *lock @@ got struct spinlock [noderef] __rcu * @@ kernel/signal.c:517:9: sparse: expected struct spinlock [usertype] *lock kernel/signal.c:517:9: sparse: got struct spinlock [noderef] __rcu * kernel/signal.c:520:36: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct spinlock [usertype] *lock @@ got struct spinlock [noderef] __rcu * @@ kernel/signal.c:520:36: sparse: expected struct spinlock [usertype] *lock kernel/signal.c:520:36: sparse: got struct spinlock [noderef] __rcu * kernel/signal.c:542:53: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected struct k_sigaction *ka @@ got struct k_sigaction [noderef] __rcu * @@ kernel/signal.c:542:53: sparse: expected struct k_sigaction *ka kernel/signal.c:542:53: sparse: got struct k_sigaction [noderef] __rcu * include/uapi/asm-generic/signal-defs.h:83:29: sparse: sparse: multiple address spaces given kernel/signal.c:695:33: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct spinlock [usertype] *lock @@ got struct spinlock [noderef] __rcu * @@ kernel/signal.c:695:33: sparse: expected struct spinlock [usertype] *lock kernel/signal.c:695:33: sparse: got struct spinlock [noderef] __rcu * kernel/signal.c:697:31: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct spinlock [usertype] *lock @@ got struct spinlock [noderef] __rcu * @@ kernel/signal.c:697:31: sparse: expected struct spinlock [usertype] *lock kernel/signal.c:697:31: sparse: got struct spinlock [noderef] __rcu * kernel/signal.c:1260:29: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const volatile [noderef] __user *ptr @@ got unsigned char * @@ kernel/signal.c:1260:29: sparse: expected void const volatile [noderef] __user *ptr kernel/signal.c:1260:29: sparse: got unsigned char * kernel/signal.c:1260:29: sparse: expected void const [noderef] __user *from kernel/signal.c:1260:29: sparse: got unsigned char * kernel/signal.c:1260:29: sparse: expected void const [noderef] __user *from kernel/signal.c:1260:29: sparse: got unsigned char * kernel/signal.c:1327:9: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct spinlock [usertype] *lock @@ got struct spinlock [noderef] __rcu * @@ kernel/signal.c:1327:9: sparse: expected struct spinlock [usertype] *lock kernel/signal.c:1327:9: sparse: got struct spinlock [noderef] __rcu * kernel/signal.c:1328:16: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct k_sigaction *action @@ got struct k_sigaction [noderef] __rcu * @@ kernel/signal.c:1328:16: sparse: expected struct k_sigaction *action kernel/signal.c:1328:16: sparse: got struct k_sigaction [noderef] __rcu * kernel/signal.c:1347:34: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct spinlock [usertype] *lock @@ got struct spinlock [noderef] __rcu * @@ kernel/signal.c:1347:34: sparse: expected struct spinlock [usertype] *lock kernel/signal.c:1347:34: sparse: got struct spinlock [noderef] __rcu * kernel/signal.c:1924:36: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected struct spinlock [usertype] *lock @@ got struct spinlock [noderef] __rcu * @@ kernel/signal.c:1924:36: sparse: expected struct spinlock [usertype] *lock kernel/signal.c:1924:36: sparse: got struct spinlock [noderef] __rcu * kernel/signal.c:2034:44: sparse: sparse: cast removes address space '__rcu' of expression kernel/signal.c:2053:65: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct task_struct *tsk @@ got struct task_struct [noderef] __rcu *parent @@ kernel/signal.c:2053:65: sparse: expected struct task_struct *tsk kernel/signal.c:2053:65: sparse: got struct task_struct [noderef] __rcu *parent kernel/signal.c:2054:40: sparse: sparse: cast removes address space '__rcu' of expression kernel/signal.c:2072:14: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct sighand_struct *psig @@ got struct sighand_struct [noderef] __rcu *[noderef] __rcu sighand @@ kernel/signal.c:2072:14: sparse: expected struct sighand_struct *psig kernel/signal.c:2072:14: sparse: got struct sighand_struct [noderef] __rcu *[noderef] __rcu sighand kernel/signal.c:2101:46: sparse: sparse: incorrect type in argument 3 (different address spaces) @@ expected struct task_struct *t @@ got struct task_struct [noderef] __rcu *parent @@ kernel/signal.c:2101:46: sparse: expected struct task_struct *t kernel/signal.c:2101:46: sparse: got struct task_struct [noderef] __rcu *parent kernel/signal.c:2102:34: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected struct task_struct *parent @@ got struct task_struct [noderef] __rcu *parent @@ kernel/signal.c:2102:34: sparse: expected struct task_struct *parent kernel/signal.c:2102:34: sparse: got struct task_struct [noderef] __rcu *parent kernel/signal.c:2131:24: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct task_struct *parent @@ got struct task_struct [noderef] __rcu *parent @@ kernel/signal.c:2131:24: sparse: expected struct task_struct *parent kernel/signal.c:2131:24: sparse: got struct task_struct [noderef] __rcu *parent kernel/signal.c:2134:24: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct task_struct *parent @@ got struct task_struct [noderef] __rcu *real_parent @@ kernel/signal.c:2134:24: sparse: expected struct task_struct *parent kernel/signal.c:2134:24: sparse: got struct task_struct [noderef] __rcu *real_parent kernel/signal.c:2167:17: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct sighand_struct *sighand @@ got struct sighand_struct [noderef] __rcu *sighand @@ kernel/signal.c:2167:17: sparse: expected struct sighand_struct *sighand kernel/signal.c:2167:17: sparse: got struct sighand_struct [noderef] __rcu *sighand kernel/signal.c:2205:41: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct spinlock [usertype] *lock @@ got struct spinlock [noderef] __rcu * @@ kernel/signal.c:2205:41: sparse: expected struct spinlock [usertype] *lock kernel/signal.c:2205:41: sparse: got struct spinlock [noderef] __rcu * kernel/signal.c:2207:39: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct spinlock [usertype] *lock @@ got struct spinlock [noderef] __rcu * @@ kernel/signal.c:2207:39: sparse: expected struct spinlock [usertype] *lock kernel/signal.c:2207:39: sparse: got struct spinlock [noderef] __rcu * kernel/signal.c:2257:33: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct spinlock [usertype] *lock @@ got struct spinlock [noderef] __rcu * @@ kernel/signal.c:2257:33: sparse: expected struct spinlock [usertype] *lock kernel/signal.c:2257:33: sparse: got struct spinlock [noderef] __rcu * kernel/signal.c:2312:31: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct spinlock [usertype] *lock @@ got struct spinlock [noderef] __rcu * @@ kernel/signal.c:2312:31: sparse: expected struct spinlock [usertype] *lock kernel/signal.c:2312:31: sparse: got struct spinlock [noderef] __rcu * kernel/signal.c:2346:31: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct spinlock [usertype] *lock @@ got struct spinlock [noderef] __rcu * @@ kernel/signal.c:2346:31: sparse: expected struct spinlock [usertype] *lock kernel/signal.c:2346:31: sparse: got struct spinlock [noderef] __rcu * kernel/signal.c:2348:33: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct spinlock [usertype] *lock @@ got struct spinlock [noderef] __rcu * @@ kernel/signal.c:2348:33: sparse: expected struct spinlock [usertype] *lock kernel/signal.c:2348:33: sparse: got struct spinlock [noderef] __rcu * kernel/signal.c:2445:41: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct spinlock [usertype] *lock @@ got struct spinlock [noderef] __rcu * @@ kernel/signal.c:2445:41: sparse: expected struct spinlock [usertype] *lock kernel/signal.c:2445:41: sparse: got struct spinlock [noderef] __rcu * kernel/signal.c:2530:41: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct spinlock [usertype] *lock @@ got struct spinlock [noderef] __rcu * @@ kernel/signal.c:2530:41: sparse: expected struct spinlock [usertype] *lock kernel/signal.c:2530:41: sparse: got struct spinlock [noderef] __rcu * kernel/signal.c:2542:33: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct spinlock [usertype] *lock @@ got struct spinlock [noderef] __rcu * @@ kernel/signal.c:2542:33: sparse: expected struct spinlock [usertype] *lock kernel/signal.c:2542:33: sparse: got struct spinlock [noderef] __rcu * kernel/signal.c:2580:52: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct task_struct *tsk @@ got struct task_struct [noderef] __rcu *parent @@ kernel/signal.c:2580:52: sparse: expected struct task_struct *tsk kernel/signal.c:2580:52: sparse: got struct task_struct [noderef] __rcu *parent kernel/signal.c:2582:49: sparse: sparse: cast removes address space '__rcu' of expression kernel/signal.c:2619:49: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected struct sighand_struct *sighand @@ got struct sighand_struct [noderef] __rcu *sighand @@ kernel/signal.c:2619:49: sparse: expected struct sighand_struct *sighand kernel/signal.c:2619:49: sparse: got struct sighand_struct [noderef] __rcu *sighand kernel/signal.c:2951:27: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct spinlock [usertype] *lock @@ got struct spinlock [noderef] __rcu * @@ kernel/signal.c:2951:27: sparse: expected struct spinlock [usertype] *lock kernel/signal.c:2951:27: sparse: got struct spinlock [noderef] __rcu * kernel/signal.c:2971:29: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct spinlock [usertype] *lock @@ got struct spinlock [noderef] __rcu * @@ kernel/signal.c:2971:29: sparse: expected struct spinlock [usertype] *lock kernel/signal.c:2971:29: sparse: got struct spinlock [noderef] __rcu * kernel/signal.c:3038:27: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct spinlock [usertype] *lock @@ got struct spinlock [noderef] __rcu * @@ kernel/signal.c:3038:27: sparse: expected struct spinlock [usertype] *lock kernel/signal.c:3038:27: sparse: got struct spinlock [noderef] __rcu * kernel/signal.c:3040:29: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct spinlock [usertype] *lock @@ got struct spinlock [noderef] __rcu * @@ kernel/signal.c:3040:29: sparse: expected struct spinlock [usertype] *lock kernel/signal.c:3040:29: sparse: got struct spinlock [noderef] __rcu * kernel/signal.c:3191:31: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct spinlock [usertype] *lock @@ got struct spinlock [noderef] __rcu * @@ kernel/signal.c:3191:31: sparse: expected struct spinlock [usertype] *lock kernel/signal.c:3191:31: sparse: got struct spinlock [noderef] __rcu * kernel/signal.c:3194:33: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct spinlock [usertype] *lock @@ got struct spinlock [noderef] __rcu * @@ kernel/signal.c:3194:33: sparse: expected struct spinlock [usertype] *lock kernel/signal.c:3194:33: sparse: got struct spinlock [noderef] __rcu * kernel/signal.c:3580:27: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct spinlock [usertype] *lock @@ got struct spinlock [noderef] __rcu * @@ kernel/signal.c:3580:27: sparse: expected struct spinlock [usertype] *lock kernel/signal.c:3580:27: sparse: got struct spinlock [noderef] __rcu * kernel/signal.c:3592:37: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct spinlock [usertype] *lock @@ got struct spinlock [noderef] __rcu * @@ kernel/signal.c:3592:37: sparse: expected struct spinlock [usertype] *lock kernel/signal.c:3592:37: sparse: got struct spinlock [noderef] __rcu * kernel/signal.c:3597:35: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct spinlock [usertype] *lock @@ got struct spinlock [noderef] __rcu * @@ kernel/signal.c:3597:35: sparse: expected struct spinlock [usertype] *lock kernel/signal.c:3597:35: sparse: got struct spinlock [noderef] __rcu * kernel/signal.c:3602:29: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct spinlock [usertype] *lock @@ got struct spinlock [noderef] __rcu * @@ kernel/signal.c:3602:29: sparse: expected struct spinlock [usertype] *lock vim +359 arch/x86/kernel/signal.c 75779f05264b99 arch/x86/kernel/signal.c Hiroshi Shimamoto 2009-02-27 324 7e907f48980d66 arch/x86/kernel/signal_32.c Ingo Molnar 2008-03-06 325 static int 235b80226b986d arch/x86/kernel/signal.c Al Viro 2012-11-09 326 __setup_frame(int sig, struct ksignal *ksig, sigset_t *set, 7e907f48980d66 arch/x86/kernel/signal_32.c Ingo Molnar 2008-03-06 327 struct pt_regs *regs) ^1da177e4c3f41 arch/i386/kernel/signal.c Linus Torvalds 2005-04-16 328 { ^1da177e4c3f41 arch/i386/kernel/signal.c Linus Torvalds 2005-04-16 329 struct sigframe __user *frame; 7e907f48980d66 arch/x86/kernel/signal_32.c Ingo Molnar 2008-03-06 330 void __user *restorer; b00d8f8f0b2b39 arch/x86/kernel/signal.c Al Viro 2020-02-15 331 void __user *fp = NULL; ^1da177e4c3f41 arch/i386/kernel/signal.c Linus Torvalds 2005-04-16 332 b00d8f8f0b2b39 arch/x86/kernel/signal.c Al Viro 2020-02-15 333 frame = get_sigframe(&ksig->ka, regs, sizeof(*frame), &fp); ^1da177e4c3f41 arch/i386/kernel/signal.c Linus Torvalds 2005-04-16 334 5c1f178094631e arch/x86/kernel/signal.c Al Viro 2020-02-15 335 if (!user_access_begin(frame, sizeof(*frame))) 3d0aedd9538e6b arch/x86/kernel/signal_32.c Hiroshi Shimamoto 2008-09-12 336 return -EFAULT; ^1da177e4c3f41 arch/i386/kernel/signal.c Linus Torvalds 2005-04-16 337 5c1f178094631e arch/x86/kernel/signal.c Al Viro 2020-02-15 338 unsafe_put_user(sig, &frame->sig, Efault); b00d8f8f0b2b39 arch/x86/kernel/signal.c Al Viro 2020-02-15 339 unsafe_put_sigcontext(&frame->sc, fp, regs, set, Efault); 5c1f178094631e arch/x86/kernel/signal.c Al Viro 2020-02-15 340 unsafe_put_user(set->sig[1], &frame->extramask[0], Efault); 1a3e4ca41c5a38 arch/x86/kernel/signal_32.c Roland McGrath 2008-04-09 341 if (current->mm->context.vdso) 6f121e548f8367 arch/x86/kernel/signal.c Andy Lutomirski 2014-05-05 342 restorer = current->mm->context.vdso + 0a6d1fa0d2b48f arch/x86/kernel/signal.c Andy Lutomirski 2015-10-05 343 vdso_image_32.sym___kernel_sigreturn; 9fbbd4dd17d071 arch/i386/kernel/signal.c Andi Kleen 2007-02-13 344 else ade1af77129dea arch/x86/kernel/signal_32.c Jan Engelhardt 2008-01-30 345 restorer = &frame->retcode; 235b80226b986d arch/x86/kernel/signal.c Al Viro 2012-11-09 346 if (ksig->ka.sa.sa_flags & SA_RESTORER) 235b80226b986d arch/x86/kernel/signal.c Al Viro 2012-11-09 347 restorer = ksig->ka.sa.sa_restorer; ^1da177e4c3f41 arch/i386/kernel/signal.c Linus Torvalds 2005-04-16 348 ^1da177e4c3f41 arch/i386/kernel/signal.c Linus Torvalds 2005-04-16 349 /* Set up to return from userspace. */ 5c1f178094631e arch/x86/kernel/signal.c Al Viro 2020-02-15 350 unsafe_put_user(restorer, &frame->pretcode, Efault); ^1da177e4c3f41 arch/i386/kernel/signal.c Linus Torvalds 2005-04-16 351 ^1da177e4c3f41 arch/i386/kernel/signal.c Linus Torvalds 2005-04-16 352 /* 7e907f48980d66 arch/x86/kernel/signal_32.c Ingo Molnar 2008-03-06 353 * This is popl %eax ; movl $__NR_sigreturn, %eax ; int $0x80 ^1da177e4c3f41 arch/i386/kernel/signal.c Linus Torvalds 2005-04-16 354 * ^1da177e4c3f41 arch/i386/kernel/signal.c Linus Torvalds 2005-04-16 355 * WE DO NOT USE IT ANY MORE! It's only left here for historical ^1da177e4c3f41 arch/i386/kernel/signal.c Linus Torvalds 2005-04-16 356 * reasons and because gdb uses it as a signature to notice ^1da177e4c3f41 arch/i386/kernel/signal.c Linus Torvalds 2005-04-16 357 * signal handler stack frames. ^1da177e4c3f41 arch/i386/kernel/signal.c Linus Torvalds 2005-04-16 358 */ 5c1f178094631e arch/x86/kernel/signal.c Al Viro 2020-02-15 @359 unsafe_put_user(*((u64 *)&retcode), (u64 *)frame->retcode, Efault); 5c1f178094631e arch/x86/kernel/signal.c Al Viro 2020-02-15 360 user_access_end(); ^1da177e4c3f41 arch/i386/kernel/signal.c Linus Torvalds 2005-04-16 361 ^1da177e4c3f41 arch/i386/kernel/signal.c Linus Torvalds 2005-04-16 362 /* Set up registers for signal handler */ 65ea5b03499035 arch/x86/kernel/signal_32.c H. Peter Anvin 2008-01-30 363 regs->sp = (unsigned long)frame; 235b80226b986d arch/x86/kernel/signal.c Al Viro 2012-11-09 364 regs->ip = (unsigned long)ksig->ka.sa.sa_handler; 65ea5b03499035 arch/x86/kernel/signal_32.c H. Peter Anvin 2008-01-30 365 regs->ax = (unsigned long)sig; 92bc2056855b32 arch/x86/kernel/signal_32.c Harvey Harrison 2008-02-08 366 regs->dx = 0; 92bc2056855b32 arch/x86/kernel/signal_32.c Harvey Harrison 2008-02-08 367 regs->cx = 0; ^1da177e4c3f41 arch/i386/kernel/signal.c Linus Torvalds 2005-04-16 368 65ea5b03499035 arch/x86/kernel/signal_32.c H. Peter Anvin 2008-01-30 369 regs->ds = __USER_DS; 65ea5b03499035 arch/x86/kernel/signal_32.c H. Peter Anvin 2008-01-30 370 regs->es = __USER_DS; 65ea5b03499035 arch/x86/kernel/signal_32.c H. Peter Anvin 2008-01-30 371 regs->ss = __USER_DS; 65ea5b03499035 arch/x86/kernel/signal_32.c H. Peter Anvin 2008-01-30 372 regs->cs = __USER_CS; ^1da177e4c3f41 arch/i386/kernel/signal.c Linus Torvalds 2005-04-16 373 283828f3c19ceb arch/i386/kernel/signal.c David Howells 2006-01-18 374 return 0; b00d8f8f0b2b39 arch/x86/kernel/signal.c Al Viro 2020-02-15 375 b00d8f8f0b2b39 arch/x86/kernel/signal.c Al Viro 2020-02-15 376 Efault: b00d8f8f0b2b39 arch/x86/kernel/signal.c Al Viro 2020-02-15 377 user_access_end(); b00d8f8f0b2b39 arch/x86/kernel/signal.c Al Viro 2020-02-15 378 return -EFAULT; ^1da177e4c3f41 arch/i386/kernel/signal.c Linus Torvalds 2005-04-16 379 } ^1da177e4c3f41 arch/i386/kernel/signal.c Linus Torvalds 2005-04-16 380 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org