diff options
| -rw-r--r-- | kernel/events/uprobes.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/kernel/events/uprobes.c b/kernel/events/uprobes.c index ca9012930ce..850eb9eb179 100644 --- a/kernel/events/uprobes.c +++ b/kernel/events/uprobes.c @@ -187,10 +187,10 @@ bool __weak is_trap_insn(uprobe_opcode_t *insn) return is_swbp_insn(insn); } -static void copy_opcode(struct page *page, unsigned long vaddr, uprobe_opcode_t *opcode) +static void copy_from_page(struct page *page, unsigned long vaddr, void *dst, int len) { void *kaddr = kmap_atomic(page); - memcpy(opcode, kaddr + (vaddr & ~PAGE_MASK), UPROBE_SWBP_INSN_SIZE); + memcpy(dst, kaddr + (vaddr & ~PAGE_MASK), len); kunmap_atomic(kaddr); } @@ -208,7 +208,7 @@ 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_opcode(page, vaddr, &old_opcode); + copy_from_page(page, vaddr, &old_opcode, UPROBE_SWBP_INSN_SIZE); is_swbp = is_swbp_insn(&old_opcode); if (is_swbp_insn(new_opcode)) { @@ -1472,7 +1472,7 @@ static int is_trap_at_addr(struct mm_struct *mm, unsigned long vaddr) if (result < 0) return result; - copy_opcode(page, vaddr, &opcode); + 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 */ |