3:13 p.m.
tree: https://android.googlesource.com/kernel/common android12-5.10
head: 2d6a43c0364d3bb0c5c00b0a32b27f4c7740e004
commit: cc6eed90a467a413b9c62fdd76e8f06347266a88 [7325/13830] ANDROID: vendor_hooks: Allow
multiple attachments to restricted hooks
config: x86_64-randconfig-s021-20211207
(https://download.01.org/0day-ci/archive/20211212/202112121232.EcEv8ckj-lk...)
compiler: gcc-9 (Debian 9.3.0-22) 9.3.0
reproduce:
# apt-get install sparse
# sparse version: v0.6.4-dirty
git remote add android-common https://android.googlesource.com/kernel/common
git fetch --no-tags android-common android12-5.10
git checkout cc6eed90a467a413b9c62fdd76e8f06347266a88
# 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=x86_64 SHELL=/bin/bash
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp(a)intel.com>
sparse warnings: (new ones prefixed by >>)
> kernel/tracepoint.c:683:27: sparse: sparse: incorrect type in
assignment (different address spaces) @@ expected struct tracepoint_func [noderef]
__rcu *funcs @@ got void * @@
kernel/tracepoint.c:683:27: sparse:
expected struct tracepoint_func [noderef] __rcu *funcs
kernel/tracepoint.c:683:27: sparse: got void *
> kernel/tracepoint.c:692:25: sparse: sparse: cast removes address
space '__rcu' of expression
> kernel/tracepoint.c:714:38: sparse: sparse: incorrect type in argument 2 (different
address spaces) @@ expected struct tracepoint_func *tp_funcs @@ got struct
tracepoint_func [noderef] __rcu *funcs @@
kernel/tracepoint.c:714:38: sparse:
expected struct tracepoint_func *tp_funcs
kernel/tracepoint.c:714:38: sparse: got struct tracepoint_func [noderef] __rcu
*funcs
> kernel/tracepoint.c:689:31: sparse: sparse: dereference of
noderef expression
kernel/tracepoint.c:691:42: sparse: sparse: dereference of
noderef expression
vim +683 kernel/tracepoint.c
675
676 #define ANDROID_RVH_NR_PROBES_MAX 2
677 static int rvh_func_add(struct tracepoint *tp, struct tracepoint_func *func)
678 {
679 int i;
680
681 if (!static_key_enabled(&tp->key)) {
682 /* '+ 1' for the last NULL element */
683 tp->funcs = rvh_zalloc_funcs(ANDROID_RVH_NR_PROBES_MAX + 1);
684 if (!tp->funcs)
685 return ENOMEM;
686 }
687
688 for (i = 0; i < ANDROID_RVH_NR_PROBES_MAX; i++) {
689 if (!tp->funcs[i].func) {
690 if
(!static_key_enabled(&tp->key))
691 tp->funcs[i].data = func->data;
692 WRITE_ONCE(tp->funcs[i].func, func->func);
693
694 return 0;
695 }
696 }
697
698 return -EBUSY;
699 }
700
701 static int android_rvh_add_func(struct tracepoint *tp, struct tracepoint_func
*func)
702 {
703 int ret;
704
705 if (tp->regfunc && !static_key_enabled(&tp->key)) {
706 ret = tp->regfunc();
707 if (ret < 0)
708 return ret;
709 }
710
711 ret = rvh_func_add(tp, func);
712 if (ret)
713 return ret;
714 tracepoint_update_call(tp, tp->funcs, false);
715 static_key_enable(&tp->key);
716
717 return 0;
718 }
719
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org