Hi Linus,
Please pull the following fix from branch:
git://git.kernel.org/pub/scm/linux/kernel/git/teigland/linux-dlm.git for-linus
This reverts commit 2b75bc9121e54e22537207b47b71373bcb0be41c.
There is something wrong with the CONFIG_COMPAT max size
check in ioctl write. There is a report of a case where
this breaks userland (clvmd) when maximum resource name
lengths are used. I am still sorting out exactly which
combinations of kernel and userland libs are a problem.
Reported-by: Jana Saout <j...@saout.de>
CC: Sasha Levin <levinsasha...@gmail.com>
Signed-off-by: David Teigland <teigl...@redhat.com>
---
fs/dlm/user.c | 7 -------
1 file changed, 7 deletions(-)
diff --git a/fs/dlm/user.c b/fs/dlm/user.c
index 7ff4985..eb4ed9b 100644
--- a/fs/dlm/user.c
+++ b/fs/dlm/user.c
@@ -503,13 +503,6 @@ static ssize_t device_write(struct file *file, const char
__user *buf,
#endif
return -EINVAL;
-#ifdef CONFIG_COMPAT
- if (count > sizeof(struct dlm_write_request32) + DLM_RESNAME_MAXLEN)
-#else
- if (count > sizeof(struct dlm_write_request) + DLM_RESNAME_MAXLEN)
-#endif
- return -EINVAL;
-
kbuf = kzalloc(count + 1, GFP_NOFS);
if (!kbuf)
return -ENOMEM;
--
1.8.1.rc1.5.g7e0651a
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majord...@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
