Greg Kurz 0d78289c3d 9pfs: fix off-by-one error in PDU free list ... The server can handle MAX_REQ - 1 PDUs at a time and the virtio-9p device has a MAX_REQ sized virtqueue. If the client manages to fill up the virtqueue, pdu_alloc() will fail and the request won't be processed without any notice to the client (it actually causes the linux 9p client to hang). This has been there since the beginning (commit 9f10751365 "virtio-9p: Add a virtio 9p device to qemu"), but it needs an agressive workload to run in the guest to show up. We actually allocate MAX_REQ PDUs and I see no reason not to link them all into the free list, so let's fix the init loop. Reported-by: Tuomas Tynkkynen <tuomas@tuxera.com> Suggested-by: Al Viro <viro@ZenIV.linux.org.uk> Signed-off-by: Greg Kurz <groug@kaod.org>		2017-01-25 09:34:35 +01:00
..
9p-handle.c	9pfs: add cleanup operation for handle backend driver	2016-11-23 13:53:34 +01:00
9p-local.c
9p-posix-acl.c
9p-proxy.c	9pfs: add cleanup operation for proxy backend driver	2016-11-23 13:53:34 +01:00
9p-proxy.h
9p-synth.c
9p-synth.h
9p-xattr-user.c
9p-xattr.c
9p-xattr.h
9p.c	9pfs: fix off-by-one error in PDU free list	2017-01-25 09:34:35 +01:00
9p.h	9pfs: fix P9_NOTAG and P9_NOFID macros	2017-01-03 17:28:44 +01:00
codir.c	9pfs: use coroutine_fn annotation in hw/9pfs/co*.[ch]	2016-10-17 14:13:58 +02:00
cofile.c	9pfs: use coroutine_fn annotation in hw/9pfs/co*.[ch]	2016-10-17 14:13:58 +02:00
cofs.c	9pfs: use coroutine_fn annotation in hw/9pfs/co*.[ch]	2016-10-17 14:13:58 +02:00
coth.c
coth.h	9pfs: use coroutine_fn annotation in hw/9pfs/co*.[ch]	2016-10-17 14:13:58 +02:00
coxattr.c	9pfs: use coroutine_fn annotation in hw/9pfs/co*.[ch]	2016-10-17 14:13:58 +02:00
Makefile.objs
trace-events	9pfs: limit xattr size in xattrcreate	2016-11-01 12:03:02 +01:00
virtio-9p-device.c	9pfs: introduce init_out/in_iov_from_pdu	2017-01-03 17:28:44 +01:00
virtio-9p.h	9pfs: introduce transport specific callbacks	2017-01-03 17:28:44 +01:00