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authorLinus Torvalds <torvalds@linux-foundation.org>2016-12-23 21:52:43 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2016-12-23 21:52:43 +0300
commita307d0a0074c18bcbea5dec368c9f047be9dade3 (patch)
treea55e2ebfe213a45f58ec492aadd0c32457015638 /block
parentfc26901b12f1deedc351bbe9fd9a018d61485c57 (diff)
parentfaf0dcebd7b387187f29ff811d47df465ea4c9f9 (diff)
downloadlinux-a307d0a0074c18bcbea5dec368c9f047be9dade3.tar.xz
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Pull final vfs updates from Al Viro: "Assorted cleanups and fixes all over the place" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: sg_write()/bsg_write() is not fit to be called under KERNEL_DS ufs: fix function declaration for ufs_truncate_blocks fs: exec: apply CLOEXEC before changing dumpable task flags seq_file: reset iterator to first record for zero offset vfs: fix isize/pos/len checks for reflink & dedupe [iov_iter] fix iterate_all_kinds() on empty iterators move aio compat to fs/aio.c reorganize do_make_slave() clone_private_mount() doesn't need to touch namespace_sem remove a bogus claim about namespace_sem being held by callers of mnt_alloc_id()
Diffstat (limited to 'block')
-rw-r--r--block/bsg.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/block/bsg.c b/block/bsg.c
index 8a05a404ae70..a57046de2f07 100644
--- a/block/bsg.c
+++ b/block/bsg.c
@@ -655,6 +655,9 @@ bsg_write(struct file *file, const char __user *buf, size_t count, loff_t *ppos)
dprintk("%s: write %Zd bytes\n", bd->name, count);
+ if (unlikely(segment_eq(get_fs(), KERNEL_DS)))
+ return -EINVAL;
+
bsg_set_block(bd, file);
bytes_written = 0;