iv/linux
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity
2c724fb927
linux/fs/afs
History
Anton Blanchard 2c724fb927 afs: Read of file returns EBADMSG 
A read of a large file on an afs mount failed:

# cat junk.file > /dev/null
cat: junk.file: Bad message

Looking at the trace, call->offset wrapped since it is only an
unsigned short. In afs_extract_data:

        _enter("{%u},{%zu},%d,,%zu", call->offset, len, last, count);
...

        if (call->offset < count) {
                if (last) {
                        _leave(" = -EBADMSG [%d < %zu]", call->offset, count);
                        return -EBADMSG;
                }

Which matches the trace:

[cat   ] ==> afs_extract_data({65132},{524},1,,65536)
[cat   ] <== afs_extract_data() = -EBADMSG [0 < 65536]

call->offset went from 65132 to 0. Fix this by making call->offset an
unsigned int.

Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: David Howells <dhowells@redhat.com>
Cc: <stable@kernel.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-03-16 17:01:41 -07:00
..
afs_cm.h afs: support the CB.ProbeUuid RPC op 2008-04-29 08:06:26 -07:00
afs_fs.h AFS: implement file locking 2007-07-16 09:05:43 -07:00
afs_vl.h AFS: Fix silly characters in a comment 2011-07-20 20:48:03 -04:00
afs.h AFS: implement file locking 2007-07-16 09:05:43 -07:00
cache.c Fix common misspellings 2011-03-31 11:26:23 -03:00
callback.c Fix various old email addresses for dwmw2 2008-06-06 11:29:10 -07:00
cell.c Fix common misspellings 2011-03-31 11:26:23 -03:00
cmservice.c afs: add afs_wq and use it instead of the system workqueue 2011-01-14 09:25:11 -08:00
dir.c switch ->create() to umode_t 2012-01-03 22:54:53 -05:00
file.c AFS: Don't put struct file on the stack 2010-05-21 18:31:28 -04:00
flock.c fs/locks.c: prepare for BKL removal 2010-10-05 11:02:04 +02:00
fsclient.c filesystems: add set_nlink() 2011-11-02 12:53:43 +01:00
inode.c filesystems: add set_nlink() 2011-11-02 12:53:43 +01:00
internal.h afs: Read of file returns EBADMSG 2012-03-16 17:01:41 -07:00
Kconfig DNS: Make AFS go to the DNS for AFSDB records for unknown cells 2010-08-05 17:17:51 +00:00
main.c afs: add afs_wq and use it instead of the system workqueue 2011-01-14 09:25:11 -08:00
Makefile FS-Cache: Make kAFS use FS-Cache 2009-04-03 16:42:41 +01:00
misc.c AFS: Correctly translate auth error aborts and don't failover in such cases 2009-06-16 21:20:14 -07:00
mntpt.c vfs: kill ->mnt_devname use in afs printks 2012-01-03 22:52:38 -05:00
netdevices.c afs: BUG to BUG_ON changes 2009-04-09 10:41:19 -07:00
proc.c AFS: Implement an autocell mount capability [ver #2] 2010-08-11 17:11:29 +00:00
rxrpc.c afs: add afs_wq and use it instead of the system workqueue 2011-01-14 09:25:11 -08:00
security.c ->permission() sanitizing: don't pass flags to ->permission() 2011-07-20 01:43:24 -04:00
server.c afs: add afs_wq and use it instead of the system workqueue 2011-01-14 09:25:11 -08:00
super.c vfs: fix the stupidity with i_dentry in inode destructors 2012-01-03 22:52:40 -05:00
vlclient.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
vlocation.c afs: add afs_wq and use it instead of the system workqueue 2011-01-14 09:25:11 -08:00
vnode.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
volume.c afs: add bdi backing to mount session. 2010-04-22 11:58:18 +02:00
write.c fs: push i_mutex and filemap_write_and_wait down into ->fsync() handlers 2011-07-20 20:47:59 -04:00