diff options
| -rw-r--r-- | include/linux/uprobes.h | 1 | ||||
| -rw-r--r-- | kernel/events/uprobes.c | 10 |
2 files changed, 6 insertions, 5 deletions
diff --git a/include/linux/uprobes.h b/include/linux/uprobes.h index 01112f27cd21..7447e15559b8 100644 --- a/include/linux/uprobes.h +++ b/include/linux/uprobes.h @@ -226,6 +226,7 @@ extern void arch_uprobe_copy_ixol(struct page *page, unsigned long vaddr, extern void uprobe_handle_trampoline(struct pt_regs *regs); extern void *arch_uretprobe_trampoline(unsigned long *psize); extern unsigned long uprobe_get_trampoline_vaddr(void); +extern void uprobe_copy_from_page(struct page *page, unsigned long vaddr, void *dst, int len); #else /* !CONFIG_UPROBES */ struct uprobes_state { }; diff --git a/kernel/events/uprobes.c b/kernel/events/uprobes.c index dd4dd156c956..f993a3422083 100644 --- a/kernel/events/uprobes.c +++ b/kernel/events/uprobes.c @@ -177,7 +177,7 @@ bool __weak is_trap_insn(uprobe_opcode_t *insn) return is_swbp_insn(insn); } -static void copy_from_page(struct page *page, unsigned long vaddr, void *dst, int len) +void uprobe_copy_from_page(struct page *page, unsigned long vaddr, void *dst, int len) { void *kaddr = kmap_atomic(page); memcpy(dst, kaddr + (vaddr & ~PAGE_MASK), len); @@ -205,7 +205,7 @@ static int verify_opcode(struct page *page, unsigned long vaddr, uprobe_opcode_t * is a trap variant; uprobes always wins over any other (gdb) * breakpoint. */ - copy_from_page(page, vaddr, &old_opcode, UPROBE_SWBP_INSN_SIZE); + uprobe_copy_from_page(page, vaddr, &old_opcode, UPROBE_SWBP_INSN_SIZE); is_swbp = is_swbp_insn(&old_opcode); if (is_swbp_insn(new_opcode)) { @@ -1051,7 +1051,7 @@ static int __copy_insn(struct address_space *mapping, struct file *filp, if (IS_ERR(page)) return PTR_ERR(page); - copy_from_page(page, offset, insn, nbytes); + uprobe_copy_from_page(page, offset, insn, nbytes); put_page(page); return 0; @@ -1397,7 +1397,7 @@ struct uprobe *uprobe_register(struct inode *inode, return ERR_PTR(-EINVAL); /* - * This ensures that copy_from_page(), copy_to_page() and + * This ensures that uprobe_copy_from_page(), copy_to_page() and * __update_ref_ctr() can't cross page boundary. */ if (!IS_ALIGNED(offset, UPROBE_SWBP_INSN_SIZE)) @@ -2393,7 +2393,7 @@ static int is_trap_at_addr(struct mm_struct *mm, unsigned long vaddr) if (result < 0) return result; - copy_from_page(page, vaddr, &opcode, UPROBE_SWBP_INSN_SIZE); + uprobe_copy_from_page(page, vaddr, &opcode, UPROBE_SWBP_INSN_SIZE); put_page(page); out: /* This needs to return true for any variant of the trap insn */ |