| Message ID | 1498746379-27340-3-git-send-email-Dave.Martin@arm.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
diff --git a/arch/arm64/kernel/ptrace.c b/arch/arm64/kernel/ptrace.c index 4c068dc..949ab6b 100644 --- a/arch/arm64/kernel/ptrace.c +++ b/arch/arm64/kernel/ptrace.c @@ -937,9 +937,6 @@ static int compat_vfp_set(struct task_struct *target, compat_ulong_t fpscr; int ret; - if (pos + count > VFP_STATE_SIZE) - return -EIO; - uregs = &target->thread.fpsimd_state.user_fpsimd; ret = user_regset_copyin(&pos, &count, &kbuf, &ubuf, uregs, 0,
compat_vfp_set() checks for userspace trying to write an excessive amount of data to the regset. However this check is conspicuous for its absence from every other _set() in the arm64 ptrace implementation. In fact, the core ptrace_regset() already clamps userspace's iov_len to the regset size before the individual regset .{get,set}() methods get called. This patch removes the redundant check. Signed-off-by: Dave Martin <Dave.Martin@arm.com> --- arch/arm64/kernel/ptrace.c | 3 --- 1 file changed, 3 deletions(-)