diff options
Diffstat (limited to 'kernel/bpf/stackmap.c')
-rw-r--r-- | kernel/bpf/stackmap.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/kernel/bpf/stackmap.c b/kernel/bpf/stackmap.c index 90daf285de03..d9e2483669d0 100644 --- a/kernel/bpf/stackmap.c +++ b/kernel/bpf/stackmap.c | |||
@@ -260,7 +260,7 @@ static int stack_map_get_build_id(struct vm_area_struct *vma, | |||
260 | return -EFAULT; /* page not mapped */ | 260 | return -EFAULT; /* page not mapped */ |
261 | 261 | ||
262 | ret = -EINVAL; | 262 | ret = -EINVAL; |
263 | page_addr = page_address(page); | 263 | page_addr = kmap_atomic(page); |
264 | ehdr = (Elf32_Ehdr *)page_addr; | 264 | ehdr = (Elf32_Ehdr *)page_addr; |
265 | 265 | ||
266 | /* compare magic x7f "ELF" */ | 266 | /* compare magic x7f "ELF" */ |
@@ -276,6 +276,7 @@ static int stack_map_get_build_id(struct vm_area_struct *vma, | |||
276 | else if (ehdr->e_ident[EI_CLASS] == ELFCLASS64) | 276 | else if (ehdr->e_ident[EI_CLASS] == ELFCLASS64) |
277 | ret = stack_map_get_build_id_64(page_addr, build_id); | 277 | ret = stack_map_get_build_id_64(page_addr, build_id); |
278 | out: | 278 | out: |
279 | kunmap_atomic(page_addr); | ||
279 | put_page(page); | 280 | put_page(page); |
280 | return ret; | 281 | return ret; |
281 | } | 282 | } |