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Date: Sat, 22 Oct 2022 03:00:35 +0800
From: kernel test robot <lkp@...el.com>
To: "Kirill A. Shutemov" <kirill.shutemov@...ux.intel.com>
Cc: kbuild-all@...ts.01.org, linux-kernel@...r.kernel.org
Subject: [kas:lam 5/18] kernel/bpf/bpf_iter.c:481:29: sparse: sparse:
incorrect type in assignment (different address spaces)
tree: https://git.kernel.org/pub/scm/linux/kernel/git/kas/linux.git lam
head: 01819ca3dcb30fc9114025c8c5da8bcee0cabcee
commit: bb9d0488e7c6bfff85581168d4f49f48cd11ac36 [5/18] x86/uaccess: Provide untagged_addr() and remove tags before address check
config: x86_64-randconfig-s022
compiler: gcc-11 (Debian 11.3.0-8) 11.3.0
reproduce:
# apt-get install sparse
# sparse version: v0.6.4-39-gce1a6720-dirty
# https://git.kernel.org/pub/scm/linux/kernel/git/kas/linux.git/commit/?id=bb9d0488e7c6bfff85581168d4f49f48cd11ac36
git remote add kas https://git.kernel.org/pub/scm/linux/kernel/git/kas/linux.git
git fetch --no-tags kas lam
git checkout bb9d0488e7c6bfff85581168d4f49f48cd11ac36
# save the config file
mkdir build_dir && cp config build_dir/.config
make W=1 C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=x86_64 SHELL=/bin/bash kernel/bpf/
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 >>)
>> kernel/bpf/bpf_iter.c:481:29: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected char [noderef] __user *__ptr_clean @@ got char * @@
kernel/bpf/bpf_iter.c:481:29: sparse: expected char [noderef] __user *__ptr_clean
kernel/bpf/bpf_iter.c:481:29: sparse: got char *
--
kernel/bpf/hashtab.c:1023:30: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected void [noderef] __percpu *[assigned] pptr @@ got void * @@
kernel/bpf/hashtab.c:1023:30: sparse: expected void [noderef] __percpu *[assigned] pptr
kernel/bpf/hashtab.c:1023:30: sparse: got void *
kernel/bpf/hashtab.c:1029:44: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected void *ptr_to_pptr @@ got void [noderef] __percpu *[assigned] pptr @@
kernel/bpf/hashtab.c:1029:44: sparse: expected void *ptr_to_pptr
kernel/bpf/hashtab.c:1029:44: sparse: got void [noderef] __percpu *[assigned] pptr
kernel/bpf/hashtab.c:1030:34: sparse: sparse: cast removes address space '__percpu' of expression
kernel/bpf/hashtab.c:1030:30: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected void [noderef] __percpu *[assigned] pptr @@ got void * @@
kernel/bpf/hashtab.c:1030:30: sparse: expected void [noderef] __percpu *[assigned] pptr
kernel/bpf/hashtab.c:1030:30: sparse: got void *
>> kernel/bpf/hashtab.c:1689:13: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected unsigned int [noderef] __user *__ptr_clean @@ got unsigned int * @@
kernel/bpf/hashtab.c:1689:13: sparse: expected unsigned int [noderef] __user *__ptr_clean
kernel/bpf/hashtab.c:1689:13: sparse: got unsigned int *
kernel/bpf/hashtab.c:1870:13: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected unsigned int [noderef] __user *__ptr_clean @@ got unsigned int * @@
kernel/bpf/hashtab.c:1870:13: sparse: expected unsigned int [noderef] __user *__ptr_clean
kernel/bpf/hashtab.c:1870:13: sparse: got unsigned int *
kernel/bpf/hashtab.c:801:27: sparse: sparse: context imbalance in 'htab_lru_map_delete_node' - unexpected unlock
kernel/bpf/hashtab.c:1160:27: sparse: sparse: context imbalance in 'htab_map_update_elem' - unexpected unlock
kernel/bpf/hashtab.c:1227:27: sparse: sparse: context imbalance in 'htab_lru_map_update_elem' - unexpected unlock
kernel/bpf/hashtab.c:1288:27: sparse: sparse: context imbalance in '__htab_percpu_map_update_elem' - unexpected unlock
kernel/bpf/hashtab.c:1353:27: sparse: sparse: context imbalance in '__htab_lru_percpu_map_update_elem' - unexpected unlock
kernel/bpf/hashtab.c:1405:27: sparse: sparse: context imbalance in 'htab_map_delete_elem' - unexpected unlock
kernel/bpf/hashtab.c:1439:27: sparse: sparse: context imbalance in 'htab_lru_map_delete_elem' - unexpected unlock
kernel/bpf/hashtab.c:1614:27: sparse: sparse: context imbalance in '__htab_map_lookup_and_delete_elem' - unexpected unlock
kernel/bpf/hashtab.c: note: in included file (through include/linux/workqueue.h, include/linux/bpf.h):
include/linux/rcupdate.h:769:9: sparse: sparse: context imbalance in '__htab_map_lookup_and_delete_batch' - unexpected unlock
include/linux/rcupdate.h:769:9: sparse: sparse: context imbalance in 'bpf_hash_map_seq_find_next' - unexpected unlock
include/linux/rcupdate.h:769:9: sparse: sparse: context imbalance in 'bpf_hash_map_seq_stop' - unexpected unlock
--
>> kernel/bpf/syscall.c:1700:13: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected unsigned int [noderef] __user *__ptr_clean @@ got unsigned int * @@
kernel/bpf/syscall.c:1700:13: sparse: expected unsigned int [noderef] __user *__ptr_clean
kernel/bpf/syscall.c:1700:13: sparse: got unsigned int *
>> kernel/bpf/syscall.c:3189:21: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected char [noderef] __user *__ptr_clean @@ got char * @@
kernel/bpf/syscall.c:3189:21: sparse: expected char [noderef] __user *__ptr_clean
kernel/bpf/syscall.c:3189:21: sparse: got char *
kernel/bpf/syscall.c:3659:23: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected unsigned int [noderef] __user *__ptr_clean @@ got unsigned int * @@
kernel/bpf/syscall.c:3659:23: sparse: expected unsigned int [noderef] __user *__ptr_clean
kernel/bpf/syscall.c:3659:23: sparse: got unsigned int *
kernel/bpf/syscall.c:3935:29: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected unsigned int [noderef] __user *__ptr_clean @@ got unsigned int * @@
kernel/bpf/syscall.c:3935:29: sparse: expected unsigned int [noderef] __user *__ptr_clean
kernel/bpf/syscall.c:3935:29: sparse: got unsigned int *
>> kernel/bpf/syscall.c:4058:45: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected unsigned long long [noderef] __user *__ptr_clean @@ got unsigned long long * @@
kernel/bpf/syscall.c:4058:45: sparse: expected unsigned long long [noderef] __user *__ptr_clean
kernel/bpf/syscall.c:4058:45: sparse: got unsigned long long *
kernel/bpf/syscall.c:4064:37: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected unsigned long long [noderef] __user *__ptr_clean @@ got unsigned long long * @@
kernel/bpf/syscall.c:4064:37: sparse: expected unsigned long long [noderef] __user *__ptr_clean
kernel/bpf/syscall.c:4064:37: sparse: got unsigned long long *
kernel/bpf/syscall.c:4086:45: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected unsigned int [noderef] __user *__ptr_clean @@ got unsigned int * @@
kernel/bpf/syscall.c:4086:45: sparse: expected unsigned int [noderef] __user *__ptr_clean
kernel/bpf/syscall.c:4086:45: sparse: got unsigned int *
kernel/bpf/syscall.c:4091:37: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected unsigned int [noderef] __user *__ptr_clean @@ got unsigned int * @@
kernel/bpf/syscall.c:4091:37: sparse: expected unsigned int [noderef] __user *__ptr_clean
kernel/bpf/syscall.c:4091:37: sparse: got unsigned int *
kernel/bpf/syscall.c:4144:37: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected unsigned long long [noderef] __user *__ptr_clean @@ got unsigned long long * @@
kernel/bpf/syscall.c:4144:37: sparse: expected unsigned long long [noderef] __user *__ptr_clean
kernel/bpf/syscall.c:4144:37: sparse: got unsigned long long *
kernel/bpf/syscall.c:4176:13: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected unsigned int [noderef] __user *__ptr_clean @@ got unsigned int * @@
kernel/bpf/syscall.c:4176:13: sparse: expected unsigned int [noderef] __user *__ptr_clean
kernel/bpf/syscall.c:4176:13: sparse: got unsigned int *
kernel/bpf/syscall.c:4221:13: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected unsigned int [noderef] __user *__ptr_clean @@ got unsigned int * @@
kernel/bpf/syscall.c:4221:13: sparse: expected unsigned int [noderef] __user *__ptr_clean
kernel/bpf/syscall.c:4221:13: sparse: got unsigned int *
kernel/bpf/syscall.c:4273:13: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected unsigned int [noderef] __user *__ptr_clean @@ got unsigned int * @@
kernel/bpf/syscall.c:4273:13: sparse: expected unsigned int [noderef] __user *__ptr_clean
kernel/bpf/syscall.c:4273:13: sparse: got unsigned int *
kernel/bpf/syscall.c:4350:13: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected unsigned int [noderef] __user *__ptr_clean @@ got unsigned int * @@
kernel/bpf/syscall.c:4350:13: sparse: expected unsigned int [noderef] __user *__ptr_clean
kernel/bpf/syscall.c:4350:13: sparse: got unsigned int *
kernel/bpf/syscall.c:4358:29: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected char [noderef] __user *__ptr_clean @@ got char * @@
kernel/bpf/syscall.c:4358:29: sparse: expected char [noderef] __user *__ptr_clean
kernel/bpf/syscall.c:4358:29: sparse: got char *
kernel/bpf/syscall.c:4373:29: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected char [noderef] __user *__ptr_clean @@ got char * @@
kernel/bpf/syscall.c:4373:29: sparse: expected char [noderef] __user *__ptr_clean
kernel/bpf/syscall.c:4373:29: sparse: got char *
kernel/bpf/syscall.c:4378:13: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected unsigned int [noderef] __user *__ptr_clean @@ got unsigned int * @@
kernel/bpf/syscall.c:4378:13: sparse: expected unsigned int [noderef] __user *__ptr_clean
kernel/bpf/syscall.c:4378:13: sparse: got unsigned int *
kernel/bpf/syscall.c:4379:13: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected unsigned int [noderef] __user *__ptr_clean @@ got unsigned int * @@
kernel/bpf/syscall.c:4379:13: sparse: expected unsigned int [noderef] __user *__ptr_clean
kernel/bpf/syscall.c:4379:13: sparse: got unsigned int *
kernel/bpf/syscall.c:4380:13: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected unsigned long long [noderef] __user *__ptr_clean @@ got unsigned long long * @@
kernel/bpf/syscall.c:4380:13: sparse: expected unsigned long long [noderef] __user *__ptr_clean
kernel/bpf/syscall.c:4380:13: sparse: got unsigned long long *
kernel/bpf/syscall.c:4381:13: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected unsigned long long [noderef] __user *__ptr_clean @@ got unsigned long long * @@
kernel/bpf/syscall.c:4381:13: sparse: expected unsigned long long [noderef] __user *__ptr_clean
kernel/bpf/syscall.c:4381:13: sparse: got unsigned long long *
--
>> kernel/bpf/btf.c:6986:29: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected char [noderef] __user *__ptr_clean @@ got char * @@
kernel/bpf/btf.c:6986:29: sparse: expected char [noderef] __user *__ptr_clean
kernel/bpf/btf.c:6986:29: sparse: got char *
>> kernel/bpf/btf.c:6994:13: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected unsigned int [noderef] __user *__ptr_clean @@ got unsigned int * @@
kernel/bpf/btf.c:6994:13: sparse: expected unsigned int [noderef] __user *__ptr_clean
kernel/bpf/btf.c:6994:13: sparse: got unsigned int *
--
>> kernel/bpf/verifier.c:327:13: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected char [noderef] __user *__ptr_clean @@ got char * @@
kernel/bpf/verifier.c:327:13: sparse: expected char [noderef] __user *__ptr_clean
kernel/bpf/verifier.c:327:13: sparse: got char *
kernel/bpf/verifier.c:14388:38: sparse: sparse: subtraction of functions? Share your drugs
kernel/bpf/verifier.c: note: in included file (through include/linux/bpf.h, include/linux/bpf-cgroup.h):
include/linux/bpfptr.h:65:40: sparse: sparse: cast to non-scalar
include/linux/bpfptr.h:65:40: sparse: sparse: cast from non-scalar
include/linux/bpfptr.h:65:40: sparse: sparse: cast to non-scalar
include/linux/bpfptr.h:65:40: sparse: sparse: cast from non-scalar
include/linux/bpfptr.h:65:40: sparse: sparse: cast to non-scalar
include/linux/bpfptr.h:65:40: sparse: sparse: cast from non-scalar
vim +481 kernel/bpf/bpf_iter.c
6b0a249a301e2a Yonghong Song 2020-08-21 453
6b0a249a301e2a Yonghong Song 2020-08-21 454 static int bpf_iter_link_fill_link_info(const struct bpf_link *link,
6b0a249a301e2a Yonghong Song 2020-08-21 455 struct bpf_link_info *info)
6b0a249a301e2a Yonghong Song 2020-08-21 456 {
6b0a249a301e2a Yonghong Song 2020-08-21 457 struct bpf_iter_link *iter_link =
6b0a249a301e2a Yonghong Song 2020-08-21 458 container_of(link, struct bpf_iter_link, link);
6b0a249a301e2a Yonghong Song 2020-08-21 459 char __user *ubuf = u64_to_user_ptr(info->iter.target_name);
6b0a249a301e2a Yonghong Song 2020-08-21 460 bpf_iter_fill_link_info_t fill_link_info;
6b0a249a301e2a Yonghong Song 2020-08-21 461 u32 ulen = info->iter.target_name_len;
6b0a249a301e2a Yonghong Song 2020-08-21 462 const char *target_name;
6b0a249a301e2a Yonghong Song 2020-08-21 463 u32 target_len;
6b0a249a301e2a Yonghong Song 2020-08-21 464
6b0a249a301e2a Yonghong Song 2020-08-21 465 if (!ulen ^ !ubuf)
6b0a249a301e2a Yonghong Song 2020-08-21 466 return -EINVAL;
6b0a249a301e2a Yonghong Song 2020-08-21 467
6b0a249a301e2a Yonghong Song 2020-08-21 468 target_name = iter_link->tinfo->reg_info->target;
6b0a249a301e2a Yonghong Song 2020-08-21 469 target_len = strlen(target_name);
6b0a249a301e2a Yonghong Song 2020-08-21 470 info->iter.target_name_len = target_len + 1;
6b0a249a301e2a Yonghong Song 2020-08-21 471
6b0a249a301e2a Yonghong Song 2020-08-21 472 if (ubuf) {
6b0a249a301e2a Yonghong Song 2020-08-21 473 if (ulen >= target_len + 1) {
6b0a249a301e2a Yonghong Song 2020-08-21 474 if (copy_to_user(ubuf, target_name, target_len + 1))
6b0a249a301e2a Yonghong Song 2020-08-21 475 return -EFAULT;
6b0a249a301e2a Yonghong Song 2020-08-21 476 } else {
6b0a249a301e2a Yonghong Song 2020-08-21 477 char zero = '\0';
6b0a249a301e2a Yonghong Song 2020-08-21 478
6b0a249a301e2a Yonghong Song 2020-08-21 479 if (copy_to_user(ubuf, target_name, ulen - 1))
6b0a249a301e2a Yonghong Song 2020-08-21 480 return -EFAULT;
6b0a249a301e2a Yonghong Song 2020-08-21 @481 if (put_user(zero, ubuf + ulen - 1))
6b0a249a301e2a Yonghong Song 2020-08-21 482 return -EFAULT;
6b0a249a301e2a Yonghong Song 2020-08-21 483 return -ENOSPC;
6b0a249a301e2a Yonghong Song 2020-08-21 484 }
6b0a249a301e2a Yonghong Song 2020-08-21 485 }
6b0a249a301e2a Yonghong Song 2020-08-21 486
6b0a249a301e2a Yonghong Song 2020-08-21 487 fill_link_info = iter_link->tinfo->reg_info->fill_link_info;
6b0a249a301e2a Yonghong Song 2020-08-21 488 if (fill_link_info)
6b0a249a301e2a Yonghong Song 2020-08-21 489 return fill_link_info(&iter_link->aux, info);
6b0a249a301e2a Yonghong Song 2020-08-21 490
6b0a249a301e2a Yonghong Song 2020-08-21 491 return 0;
6b0a249a301e2a Yonghong Song 2020-08-21 492 }
6b0a249a301e2a Yonghong Song 2020-08-21 493
:::::: The code at line 481 was first introduced by commit
:::::: 6b0a249a301e2af9adda84adbced3a2988248b95 bpf: Implement link_query for bpf iterators
:::::: TO: Yonghong Song <yhs@...com>
:::::: CC: Alexei Starovoitov <ast@...nel.org>
--
0-DAY CI Kernel Test Service
https://01.org/lkp
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