lists.openwall.net | 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 linux-hardening linux-cve-announce PHC | |
Open Source and information security mailing list archives
| ||
|
Date: Tue, 07 Aug 2007 01:24:58 -0700 From: <gregkh@...e.de> To: cmm@...ibm.com, akpm@...ux-foundation.org, gregkh@...e.de, linux-ext4@...r.kernel.org, yanzheng@...n.com Cc: <stable-commits@...r.kernel.org> Subject: patch ext4_ext_put_in_cache-uses-__u32-to-receive-physical-block-number.patch queued to -stable tree This is a note to let you know that we have just queued up the patch titled Subject: "ext4_ext_put_in_cache" uses __u32 to receive physical block number to the 2.6.22-stable tree. Its filename is ext4_ext_put_in_cache-uses-__u32-to-receive-physical-block-number.patch A git repo of this tree can be found at http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary >From stable-bounces@...ux.kernel.org Tue Jul 31 00:48:13 2007 From: Mingming Cao <cmm@...ibm.com> Date: Tue, 31 Jul 2007 00:37:46 -0700 Subject: "ext4_ext_put_in_cache" uses __u32 to receive physical block number To: torvalds@...ux-foundation.org Cc: akpm@...ux-foundation.org, linux-ext4@...r.kernel.org, cmm@...ibm.com, stable@...nel.org, yanzheng@...n.com Message-ID: <200707310737.l6V7bk50021902@...p1.linux-foundation.org> From: Mingming Cao <cmm@...ibm.com> 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 <cmm@...ibm.com> Cc: Yan Zheng <yanzheng@...n.com> Cc: <linux-ext4@...r.kernel.org> Signed-off-by: Andrew Morton <akpm@...ux-foundation.org> Signed-off-by: Greg Kroah-Hartman <gregkh@...e.de> --- 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); _ _______________________________________________ stable mailing list stable@...ux.kernel.org http://linux.kernel.org/mailman/listinfo/stable Patches currently in stable-queue which might be from cmm@...ibm.com are queue-2.6.22/ext4_ext_put_in_cache-uses-__u32-to-receive-physical-block-number.patch - To unsubscribe from this list: send the line "unsubscribe linux-ext4" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
Powered by blists - more mailing lists