diff options
Diffstat (limited to 'main/busybox/1000-fbsplash-use-virtual-y-size-in-mmap-size-calculation.patch')
| -rw-r--r-- | main/busybox/1000-fbsplash-use-virtual-y-size-in-mmap-size-calculation.patch | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/main/busybox/1000-fbsplash-use-virtual-y-size-in-mmap-size-calculation.patch b/main/busybox/1000-fbsplash-use-virtual-y-size-in-mmap-size-calculation.patch new file mode 100644 index 000000000..ddfeb7f96 --- /dev/null +++ b/main/busybox/1000-fbsplash-use-virtual-y-size-in-mmap-size-calculation.patch @@ -0,0 +1,32 @@ +From 7f70f194ae135bd1e856c2dc811b8fa4a56296ea Mon Sep 17 00:00:00 2001 +From: =?UTF-8?q?Timo=20Ter=C3=A4s?= <timo.teras@iki.fi> +Date: Thu, 20 Sep 2012 09:41:56 +0300 +Subject: [PATCH] fbsplash: use virtual y size in mmap size calculations +MIME-Version: 1.0 +Content-Type: text/plain; charset=UTF-8 +Content-Transfer-Encoding: 8bit + +The virtual y can be larger - and we can be even writing there since +we are taking into account the y offset. Avoids possible crash. + +Signed-off-by: Timo Teräs <timo.teras@iki.fi> +--- + miscutils/fbsplash.c | 2 +- + 1 file changed, 1 insertion(+), 1 deletion(-) + +diff --git a/miscutils/fbsplash.c b/miscutils/fbsplash.c +index 7b695b2..58e491d 100644 +--- a/miscutils/fbsplash.c ++++ b/miscutils/fbsplash.c +@@ -150,7 +150,7 @@ static void fb_open(const char *strfb_device) + + // map the device in memory + G.addr = mmap(NULL, +- G.scr_var.yres * G.scr_fix.line_length, ++ G.scr_var.yres_virtual * G.scr_fix.line_length, + PROT_WRITE, MAP_SHARED, fbfd, 0); + if (G.addr == MAP_FAILED) + bb_perror_msg_and_die("mmap"); +-- +2.1.3 + |