shinys000114/linux
1
0
Fork 0
mirror of https://github.com/hardkernel/linux.git synced 2026-06-05 10:31:46 +09:00
Code Issues Packages Projects Releases Wiki Activity

UPSTREAM: userfaultfd: fix return error if mmap_changing is non-zero in MOVE ioctl

Browse Source 
To be consistent with other uffd ioctl's returning EAGAIN when
mmap_changing is detected, we should change UFFDIO_MOVE to do the same.

Link: https://lkml.kernel.org/r/20240117223922.1445327-1-lokeshgidra@google.com
Signed-off-by: Lokesh Gidra <lokeshgidra@google.com>
Acked-by: Suren Baghdasaryan <surenb@google.com>
Acked-by: Mike Rapoport (IBM) <rppt@kernel.org>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: Axel Rasmussen <axelrasmussen@google.com>
Cc: Brian Geffon <bgeffon@google.com>
Cc: David Hildenbrand <david@redhat.com>
Cc: Jann Horn <jannh@google.com>
Cc: Kalesh Singh <kaleshsingh@google.com>
Cc: Matthew Wilcox (Oracle) <willy@infradead.org>
Cc: Nicolas Geoffray <ngeoffray@google.com>
Cc: Peter Xu <peterx@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

(cherry picked from commit 6ca03f1bb5a7427a66df62c954b3500a4255cdb9)

Bug: 274911254
Change-Id: I3499e3987bf72d3d7a307165e0f9d1ed6d2b0611
Signed-off-by: Lokesh Gidra <lokeshgidra@google.com>
This commit is contained in:
Lokesh Gidra
2024-01-17 14:39:21 -08:00
parent 4f658d7723
commit abd6748ba6
1 changed files with 1 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
fs/userfaultfd.c
View File

@@ -1987,7 +1987,7 @@ static int userfaultfd_move(struct userfaultfd_ctx *ctx,
ret = move_pages(ctx, mm, uffdio_move.dst, uffdio_move.src, ret = move_pages(ctx, mm, uffdio_move.dst, uffdio_move.src,
uffdio_move.len, uffdio_move.mode); uffdio_move.len, uffdio_move.mode);
else else
ret = -EINVAL; ret = -EAGAIN;
mmap_read_unlock(mm); mmap_read_unlock(mm);
mmput(mm); mmput(mm);