[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
[Qemu-devel] [PATCH v4 29/47] ivshmem: error on too many eventfd receive
From: |
marcandre . lureau |
Subject: |
[Qemu-devel] [PATCH v4 29/47] ivshmem: error on too many eventfd received |
Date: |
Thu, 24 Sep 2015 13:37:31 +0200 |
From: Marc-André Lureau <address@hidden>
The number of eventfd that can be handled per peer is limited by the
number of vectors. Return an error when receiving too many of them.
Signed-off-by: Marc-André Lureau <address@hidden>
---
hw/misc/ivshmem.c | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/hw/misc/ivshmem.c b/hw/misc/ivshmem.c
index aeb8414..3231a46 100644
--- a/hw/misc/ivshmem.c
+++ b/hw/misc/ivshmem.c
@@ -571,6 +571,14 @@ static void ivshmem_read(void *opaque, const uint8_t *buf,
int size)
/* each peer has an associated array of eventfds, and we keep
* track of how many eventfds received so far */
/* get a new eventfd: */
+ /* get a new eventfd */
+ if (peer->nb_eventfds >= s->vectors) {
+ error_report("Too many eventfd received, device has %d vectors",
+ s->vectors);
+ close(incoming_fd);
+ return;
+ }
+
new_eventfd = peer->nb_eventfds++;
/* this is an eventfd for a particular peer VM */
--
2.4.3
- [Qemu-devel] [PATCH v4 19/47] ivshmem: print error on invalid peer id, (continued)
- [Qemu-devel] [PATCH v4 19/47] ivshmem: print error on invalid peer id, marcandre . lureau, 2015/09/24
- [Qemu-devel] [PATCH v4 20/47] ivshmem: simplify a bit the code, marcandre . lureau, 2015/09/24
- [Qemu-devel] [PATCH v4 21/47] ivshmem: use common return, marcandre . lureau, 2015/09/24
- [Qemu-devel] [PATCH v4 22/47] ivshmem: use common is_power_of_2(), marcandre . lureau, 2015/09/24
- [Qemu-devel] [PATCH v4 23/47] ivshmem: migrate with VMStateDescription, marcandre . lureau, 2015/09/24
- [Qemu-devel] [PATCH v4 25/47] ivshmem: check shm isn't already initialized, marcandre . lureau, 2015/09/24
- [Qemu-devel] [PATCH v4 24/47] ivshmem: shmfd can be 0, marcandre . lureau, 2015/09/24
- [Qemu-devel] [PATCH v4 26/47] ivshmem: add device description, marcandre . lureau, 2015/09/24
- [Qemu-devel] [PATCH v4 27/47] ivshmem: fix pci_ivshmem_exit(), marcandre . lureau, 2015/09/24
- [Qemu-devel] [PATCH v4 28/47] ivshmem: replace 'guest' for 'peer' appropriately, marcandre . lureau, 2015/09/24
- [Qemu-devel] [PATCH v4 29/47] ivshmem: error on too many eventfd received,
marcandre . lureau <=
- [Qemu-devel] [PATCH v4 30/47] ivshmem: reset mask on device reset, marcandre . lureau, 2015/09/24
- [Qemu-devel] [PATCH v4 32/47] ivshmem-client: check the number of vectors, marcandre . lureau, 2015/09/24
- [Qemu-devel] [PATCH v4 33/47] ivshmem-server: use a uint16 for client ID, marcandre . lureau, 2015/09/24
- [Qemu-devel] [PATCH v4 34/47] ivshmem-server: fix hugetlbfs support, marcandre . lureau, 2015/09/24
- [Qemu-devel] [PATCH v4 31/47] contrib: add ivshmem client and server, marcandre . lureau, 2015/09/24
- [Qemu-devel] [PATCH v4 35/47] docs: update ivshmem device spec, marcandre . lureau, 2015/09/24
- [Qemu-devel] [PATCH v4 37/47] contrib: remove unnecessary strdup(), marcandre . lureau, 2015/09/24
- [Qemu-devel] [PATCH v4 38/47] msix: implement pba write (but read-only), marcandre . lureau, 2015/09/24
- [Qemu-devel] [PATCH v4 36/47] ivshmem: add check on protocol version in QEMU, marcandre . lureau, 2015/09/24
- [Qemu-devel] [PATCH v4 39/47] qtest: add qtest_add_abrt_handler(), marcandre . lureau, 2015/09/24