lkml.org 
[lkml]   [2016]   [Oct]   [13]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH] UBI: Fix crash in try_recover_peb()
Date
    drivers/mtd/ubi/eba.c: In function ‘try_recover_peb’:
drivers/mtd/ubi/eba.c:744: warning: ‘vid_hdr’ is used uninitialized in this function

The pointer vid_hdr is indeed not initialized, leading to a crash when
it is dereferenced.

Fix this by obtaining the pointer from the VID buffer, like is done
everywhere else.

Fixes: 3291b52f9ff0acc8 ("UBI: introduce the VID buffer concept")
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
---
Completely untested. And I know nothing about UBI ;-)
---
drivers/mtd/ubi/eba.c | 1 +
1 file changed, 1 insertion(+)

diff --git a/drivers/mtd/ubi/eba.c b/drivers/mtd/ubi/eba.c
index 95c4048a371e87b6..388e46be6ad92805 100644
--- a/drivers/mtd/ubi/eba.c
+++ b/drivers/mtd/ubi/eba.c
@@ -741,6 +741,7 @@ static int try_recover_peb(struct ubi_volume *vol, int pnum, int lnum,
goto out_put;
}

+ vid_hdr = ubi_get_vid_hdr(vidb);
ubi_assert(vid_hdr->vol_type == UBI_VID_DYNAMIC);

mutex_lock(&ubi->buf_mutex);
--
1.9.1
\
 
 \ /
  Last update: 2016-10-13 16:24    [W:0.045 / U:0.268 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site