Messages in this thread | | | Date | Mon, 11 Oct 2021 15:00:31 +0800 | From | kernel test robot <> | Subject | [tglx-devel:x86/fpu 63/77] arch/x86/kernel/signal.c:931:17: sparse: sparse: incorrect type in argument 1 (different address spaces) |
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tree: https://git.kernel.org/pub/scm/linux/kernel/git/tglx/devel.git x86/fpu head: a365ccb2764d58791ee5946b16fa0ffceb17021f commit: 09ee55699174bd06f70b1e859d666879a14185d3 [63/77] x86/signal: Use fpu::__state_user_size for sigalt stack validation config: x86_64-randconfig-s031-20211011 (attached as .config) compiler: gcc-9 (Debian 9.3.0-22) 9.3.0 reproduce: # apt-get install sparse # sparse version: v0.6.4-dirty # https://git.kernel.org/pub/scm/linux/kernel/git/tglx/devel.git/commit/?id=09ee55699174bd06f70b1e859d666879a14185d3 git remote add tglx-devel https://git.kernel.org/pub/scm/linux/kernel/git/tglx/devel.git git fetch --no-tags tglx-devel x86/fpu git checkout 09ee55699174bd06f70b1e859d666879a14185d3 # save the attached .config to linux build tree make W=1 C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' ARCH=x86_64
If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@intel.com>
sparse warnings: (new ones prefixed by >>) arch/x86/kernel/signal.c:917:39: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct spinlock [usertype] *lock @@ got struct spinlock [noderef] __rcu * @@ arch/x86/kernel/signal.c:917:39: sparse: expected struct spinlock [usertype] *lock arch/x86/kernel/signal.c:917:39: sparse: got struct spinlock [noderef] __rcu * arch/x86/kernel/signal.c:923:41: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct spinlock [usertype] *lock @@ got struct spinlock [noderef] __rcu * @@ arch/x86/kernel/signal.c:923:41: sparse: expected struct spinlock [usertype] *lock arch/x86/kernel/signal.c:923:41: sparse: got struct spinlock [noderef] __rcu * >> arch/x86/kernel/signal.c:931:17: 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:931:17: sparse: expected struct lockdep_map const *lock arch/x86/kernel/signal.c:931:17: sparse: got struct lockdep_map [noderef] __rcu * arch/x86/kernel/signal.c:916:9: sparse: sparse: context imbalance in 'sigaltstack_lock' - wrong count at exit arch/x86/kernel/signal.c: note: in included file (through include/linux/sched.h): arch/x86/include/asm/current.h:15:16: sparse: sparse: context imbalance in 'sigaltstack_unlock' - unexpected unlock
vim +931 arch/x86/kernel/signal.c
925 926 bool sigaltstack_size_valid(size_t ss_size) 927 { 928 if (fpu_state_size_dynamic()) { 929 unsigned long fsize = max_frame_size - fpu_default_state_size; 930 > 931 lockdep_assert_held(¤t->sighand->siglock); 932 933 fsize += current->group_leader->thread.fpu.__user_state_size; 934 return ss_size > fsize; 935 } 936 return true; 937 } 938 #endif 939
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