diff options
| author | Claudio Imbrenda <imbrenda@linux.ibm.com> | 2024-10-22 14:05:54 +0200 |
|---|---|---|
| committer | Heiko Carstens <hca@linux.ibm.com> | 2024-10-29 11:49:18 +0100 |
| commit | 473aaf52b937e2401c7ad161a6197bf88e920a9a (patch) | |
| tree | 2ba60cffd605414fcddd63029e11d99dc80685b5 /arch/s390 | |
| parent | 075fd7362ca082c85672687ed16cc7ed11c1578e (diff) | |
s390/mm/gmap: Fix __gmap_fault() return code
Errors in fixup_user_fault() were masked and -EFAULT was returned for
any error, including out of memory.
Fix this by returning the correct error code. This means that in many
cases the error code will be propagated all the way to userspace.
Suggested-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Claudio Imbrenda <imbrenda@linux.ibm.com>
Reviewed-by: Heiko Carstens <hca@linux.ibm.com>
Acked-by: Alexander Gordeev <agordeev@linux.ibm.com>
Link: https://lore.kernel.org/r/20241022120601.167009-5-imbrenda@linux.ibm.com
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Diffstat (limited to 'arch/s390')
| -rw-r--r-- | arch/s390/mm/gmap.c | 11 |
1 files changed, 5 insertions, 6 deletions
diff --git a/arch/s390/mm/gmap.c b/arch/s390/mm/gmap.c index f51ad948ba53..a8746f71c679 100644 --- a/arch/s390/mm/gmap.c +++ b/arch/s390/mm/gmap.c @@ -718,13 +718,12 @@ retry: if (IS_ERR_VALUE(vmaddr)) return vmaddr; - if (fault_flags & FAULT_FLAG_RETRY_NOWAIT) { + if (fault_flags & FAULT_FLAG_RETRY_NOWAIT) rc = fixup_user_fault_nowait(gmap->mm, vmaddr, fault_flags, &unlocked); - if (rc) - return rc; - } else if (fixup_user_fault(gmap->mm, vmaddr, fault_flags, &unlocked)) { - return -EFAULT; - } + else + rc = fixup_user_fault(gmap->mm, vmaddr, fault_flags, &unlocked); + if (rc) + return rc; /* * In the case that fixup_user_fault unlocked the mmap_lock during * fault-in, redo __gmap_translate() to avoid racing with a |