lists  /  announce  owl-users  owl-dev  john-users  john-dev  passwdqc-users  yescrypt  popa3d-users  /  oss-security  kernel-hardening  musl  sabotage  tlsify  passwords  /  crypt-dev  xvendor  /  Bugtraq  Full-Disclosure  linux-kernel  linux-netdev  linux-ext4  PHC 
Open Source and information security mailing list archives
Hash Suite: Windows password security audit tool. GUI, reports in PDF.
[<prev] [next>] [day] [month] [year] [list]
Date:	Tue, 31 Jul 2007 16:55:25 -0700
Subject: - ext4_ext_put_in_cache-uses-__u32-to-receive-physical.patch removed from -mm tree

The patch titled
     "ext4_ext_put_in_cache" uses __u32 to receive physical block number
has been removed from the -mm tree.  Its filename was

This patch was dropped because it was merged into mainline or a subsystem tree

Subject: "ext4_ext_put_in_cache" uses __u32 to receive physical block number
From: Mingming Cao <>

Yan Zheng wrote:

> I think I found a bug in ext4/extents.c, "ext4_ext_put_in_cache" uses
> "__u32" to receive physical block number.  "ext4_ext_put_in_cache" is
> used in "ext4_ext_get_blocks", it sets ext4 inode's extent cache
> according most recently tree lookup (higher 16 bits of saved physical
> block number are always zero). when serving a mapping request,
> "ext4_ext_get_blocks" first check whether the logical block is in
> inode's extent cache. if the logical block is in the cache and the
> cached region isn't a gap, "ext4_ext_get_blocks" gets physical block
> number by using cached region's physical block number and offset in
> the cached region.  as described above, "ext4_ext_get_blocks" may
> return wrong result when there are physical block numbers bigger than
> 0xffffffff.

You are right.  Thanks for reporting this!

Signed-off-by: Mingming Cao <>
Cc: Yan Zheng <>
Cc: <>
Cc: <>
Signed-off-by: Andrew Morton <>

 fs/ext4/extents.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff -puN fs/ext4/extents.c~ext4_ext_put_in_cache-uses-__u32-to-receive-physical fs/ext4/extents.c
--- a/fs/ext4/extents.c~ext4_ext_put_in_cache-uses-__u32-to-receive-physical
+++ a/fs/ext4/extents.c
@@ -1544,7 +1544,7 @@ int ext4_ext_walk_space(struct inode *in
 static void
 ext4_ext_put_in_cache(struct inode *inode, __u32 block,
-			__u32 len, __u32 start, int type)
+			__u32 len, ext4_fsblk_t start, int type)
 	struct ext4_ext_cache *cex;
 	BUG_ON(len == 0);

Patches currently in -mm which might be from are


To unsubscribe from this list: send the line "unsubscribe linux-ext4" in
the body of a message to
More majordomo info at

Powered by blists - more mailing lists

Powered by Openwall GNU/*/Linux - Powered by OpenVZ