Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Skip to content
Commit 0752adfd authored by Vineet Gupta's avatar Vineet Gupta
Browse files

ARC: Fix 32-bit wrap around in access_ok()



Anton reported

 | LTP tests syscalls/process_vm_readv01 and process_vm_writev01 fail
 | similarly in one testcase test_iov_invalid -> lvec->iov_base.
 | Testcase expects errno EFAULT and return code -1,
 | but it gets return code 1 and ERRNO is 0 what means success.

Essentially test case was passing a pointer of -1 which access_ok()
was not catching. It was doing [@addr + @sz <= TASK_SIZE] which would
pass for @addr == -1

Fixed that by rewriting as [@addr <= TASK_SIZE - @sz]

Reported-by: default avatarAnton Kolesov <Anton.Kolesov@synopsys.com>
Signed-off-by: default avatarVineet Gupta <vgupta@synopsys.com>
parent c11eb222
Loading
Loading
Loading
Loading
0% Loading or .
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment