leandrof/linux
1
0
Fork 0
forked from Minki/linux
Code Issues Pull Requests Packages Projects Releases Wiki Activity
305a26af5b
linux/fs/afs
History
Anton Blanchard c017386352 afs: Remote abort can cause BUG in rxrpc code 
When writing files to afs I sometimes hit a BUG:

kernel BUG at fs/afs/rxrpc.c:179!

With a backtrace of:

	afs_free_call
	afs_make_call
	afs_fs_store_data
	afs_vnode_store_data
	afs_write_back_from_locked_page
	afs_writepages_region
	afs_writepages

The cause is:

	ASSERT(skb_queue_empty(&call->rx_queue));

Looking at a tcpdump of the session the abort happens because we
are exceeding our disk quota:

	rx abort fs reply store-data error diskquota exceeded (32)

So the abort error is valid. We hit the BUG because we haven't
freed all the resources for the call.

By freeing any skbs in call->rx_queue before calling afs_free_call
we avoid hitting leaking memory and avoid hitting the BUG.

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_fs.h
afs_vl.h AFS: Fix silly characters in a comment 2011-07-20 20:48:03 -04:00
afs.h
cache.c Fix common misspellings 2011-03-31 11:26:23 -03:00
callback.c
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
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
main.c afs: add afs_wq and use it instead of the system workqueue 2011-01-14 09:25:11 -08:00
Makefile
misc.c
mntpt.c vfs: kill ->mnt_devname use in afs printks 2012-01-03 22:52:38 -05:00
netdevices.c
proc.c AFS: Implement an autocell mount capability [ver #2] 2010-08-11 17:11:29 +00:00
rxrpc.c afs: Remote abort can cause BUG in rxrpc code 2012-03-16 17:01:41 -07:00
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
vlocation.c afs: add afs_wq and use it instead of the system workqueue 2011-01-14 09:25:11 -08:00
vnode.c
volume.c
write.c fs: push i_mutex and filemap_write_and_wait down into ->fsync() handlers 2011-07-20 20:47:59 -04:00