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Message-ID: <202205280710.c7k1K4sD-lkp@intel.com>
Date: Sat, 28 May 2022 07:40:31 +0800
From: kernel test robot <lkp@...el.com>
To: Mark Brown <broonie@...nel.org>
Cc: kbuild-all@...ts.01.org, linux-kernel@...r.kernel.org,
Catalin Marinas <catalin.marinas@....com>
Subject: arch/arm64/kernel/signal.c:663:43: sparse: sparse: incorrect type in
argument 1 (different address spaces)
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: bf272460d744112bacd4c4d562592decbf0edf64
commit: a1f4ccd25cc256255813f584f10e5527369d4a02 arm64/sme: Provide Kconfig for SME
date: 5 weeks ago
config: arm64-randconfig-s032-20220527 (https://download.01.org/0day-ci/archive/20220528/202205280710.c7k1K4sD-lkp@intel.com/config)
compiler: aarch64-linux-gcc (GCC) 11.3.0
reproduce:
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# apt-get install sparse
# sparse version: v0.6.4-14-g5a0004b5-dirty
# https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=a1f4ccd25cc256255813f584f10e5527369d4a02
git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
git fetch --no-tags linus master
git checkout a1f4ccd25cc256255813f584f10e5527369d4a02
# save the config file
mkdir build_dir && cp config build_dir/.config
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.3.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=arm64 SHELL=/bin/bash arch/arm64/kernel/
If you fix the issue, kindly add following tag where applicable
Reported-by: kernel test robot <lkp@...el.com>
sparse warnings: (new ones prefixed by >>)
>> arch/arm64/kernel/signal.c:663:43: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct user_ctxs [noderef] __user *user @@ got struct user_ctxs * @@
arch/arm64/kernel/signal.c:663:43: sparse: expected struct user_ctxs [noderef] __user *user
arch/arm64/kernel/signal.c:663:43: sparse: got struct user_ctxs *
arch/arm64/kernel/signal.c:933:26: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected void ( [noderef] [usertype] __user *[assigned] [usertype] sigtramp )( ... ) @@ got void * @@
arch/arm64/kernel/signal.c:933:26: sparse: expected void ( [noderef] [usertype] __user *[assigned] [usertype] sigtramp )( ... )
arch/arm64/kernel/signal.c:933:26: sparse: got void *
>> arch/arm64/kernel/signal.c:394:35: sparse: sparse: dereference of noderef expression
>> arch/arm64/kernel/signal.c:394:35: sparse: sparse: dereference of noderef expression
arch/arm64/kernel/signal.c:428:53: sparse: sparse: dereference of noderef expression
arch/arm64/kernel/signal.c:428:53: sparse: sparse: dereference of noderef expression
vim +663 arch/arm64/kernel/signal.c
47ccb02868cead Dave Martin 2017-06-15 620
2c020ed8d148f7 Catalin Marinas 2012-03-05 621 static int restore_sigframe(struct pt_regs *regs,
2c020ed8d148f7 Catalin Marinas 2012-03-05 622 struct rt_sigframe __user *sf)
2c020ed8d148f7 Catalin Marinas 2012-03-05 623 {
2c020ed8d148f7 Catalin Marinas 2012-03-05 624 sigset_t set;
2c020ed8d148f7 Catalin Marinas 2012-03-05 625 int i, err;
47ccb02868cead Dave Martin 2017-06-15 626 struct user_ctxs user;
2c020ed8d148f7 Catalin Marinas 2012-03-05 627
2c020ed8d148f7 Catalin Marinas 2012-03-05 628 err = __copy_from_user(&set, &sf->uc.uc_sigmask, sizeof(set));
2c020ed8d148f7 Catalin Marinas 2012-03-05 629 if (err == 0)
2c020ed8d148f7 Catalin Marinas 2012-03-05 630 set_current_blocked(&set);
2c020ed8d148f7 Catalin Marinas 2012-03-05 631
2c020ed8d148f7 Catalin Marinas 2012-03-05 632 for (i = 0; i < 31; i++)
2c020ed8d148f7 Catalin Marinas 2012-03-05 633 __get_user_error(regs->regs[i], &sf->uc.uc_mcontext.regs[i],
2c020ed8d148f7 Catalin Marinas 2012-03-05 634 err);
2c020ed8d148f7 Catalin Marinas 2012-03-05 635 __get_user_error(regs->sp, &sf->uc.uc_mcontext.sp, err);
2c020ed8d148f7 Catalin Marinas 2012-03-05 636 __get_user_error(regs->pc, &sf->uc.uc_mcontext.pc, err);
2c020ed8d148f7 Catalin Marinas 2012-03-05 637 __get_user_error(regs->pstate, &sf->uc.uc_mcontext.pstate, err);
2c020ed8d148f7 Catalin Marinas 2012-03-05 638
2c020ed8d148f7 Catalin Marinas 2012-03-05 639 /*
2c020ed8d148f7 Catalin Marinas 2012-03-05 640 * Avoid sys_rt_sigreturn() restarting.
2c020ed8d148f7 Catalin Marinas 2012-03-05 641 */
17c28958600928 Dave Martin 2017-08-01 642 forget_syscall(regs);
2c020ed8d148f7 Catalin Marinas 2012-03-05 643
dbd4d7ca563fd0 Mark Rutland 2016-03-01 644 err |= !valid_user_regs(®s->user_regs, current);
47ccb02868cead Dave Martin 2017-06-15 645 if (err == 0)
47ccb02868cead Dave Martin 2017-06-15 646 err = parse_user_sigframe(&user, sf);
2c020ed8d148f7 Catalin Marinas 2012-03-05 647
6d502b6ba1b267 Suzuki K Poulose 2020-01-13 648 if (err == 0 && system_supports_fpsimd()) {
8cd969d28fd284 Dave Martin 2017-10-31 649 if (!user.fpsimd)
8cd969d28fd284 Dave Martin 2017-10-31 650 return -EINVAL;
8cd969d28fd284 Dave Martin 2017-10-31 651
8cd969d28fd284 Dave Martin 2017-10-31 652 if (user.sve) {
8cd969d28fd284 Dave Martin 2017-10-31 653 if (!system_supports_sve())
8cd969d28fd284 Dave Martin 2017-10-31 654 return -EINVAL;
8cd969d28fd284 Dave Martin 2017-10-31 655
8cd969d28fd284 Dave Martin 2017-10-31 656 err = restore_sve_fpsimd_context(&user);
8cd969d28fd284 Dave Martin 2017-10-31 657 } else {
47ccb02868cead Dave Martin 2017-06-15 658 err = restore_fpsimd_context(user.fpsimd);
8cd969d28fd284 Dave Martin 2017-10-31 659 }
8cd969d28fd284 Dave Martin 2017-10-31 660 }
2c020ed8d148f7 Catalin Marinas 2012-03-05 661
39782210eb7e87 Mark Brown 2022-04-19 662 if (err == 0 && system_supports_sme() && user.za)
39782210eb7e87 Mark Brown 2022-04-19 @663 err = restore_za_context(&user);
39782210eb7e87 Mark Brown 2022-04-19 664
2c020ed8d148f7 Catalin Marinas 2012-03-05 665 return err;
2c020ed8d148f7 Catalin Marinas 2012-03-05 666 }
2c020ed8d148f7 Catalin Marinas 2012-03-05 667
:::::: The code at line 663 was first introduced by commit
:::::: 39782210eb7e87634d96cacb6ece370bc59d74ba arm64/sme: Implement ZA signal handling
:::::: TO: Mark Brown <broonie@...nel.org>
:::::: CC: Catalin Marinas <catalin.marinas@....com>
--
0-DAY CI Kernel Test Service
https://01.org/lkp
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