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[Qemu-devel] [PATCH 28/39] ivshmem: error on too many eventfd received
From: |
Marc-André Lureau |
Subject: |
[Qemu-devel] [PATCH 28/39] ivshmem: error on too many eventfd received |
Date: |
Fri, 26 Jun 2015 16:49:34 +0200 |
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 | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/hw/misc/ivshmem.c b/hw/misc/ivshmem.c
index 11b49c3..ade7456 100644
--- a/hw/misc/ivshmem.c
+++ b/hw/misc/ivshmem.c
@@ -570,6 +570,13 @@ static void ivshmem_read(void *opaque, const uint8_t *buf,
int size)
}
/* 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;
+ }
+
nth_eventfd = peer->nb_eventfds++;
/* this is an eventfd for a particular peer VM */
--
2.4.3
- [Qemu-devel] [PATCH 17/39] ivshmem: print error on invalid peer id, (continued)
- [Qemu-devel] [PATCH 17/39] ivshmem: print error on invalid peer id, Marc-André Lureau, 2015/06/26
- [Qemu-devel] [PATCH 18/39] ivshmem: add a warning if eventfd value is 0, Marc-André Lureau, 2015/06/26
- [Qemu-devel] [PATCH 19/39] ivshmem: beautify a bit the code, Marc-André Lureau, 2015/06/26
- [Qemu-devel] [PATCH 20/39] ivshmem: use common return, Marc-André Lureau, 2015/06/26
- [Qemu-devel] [PATCH 22/39] ivshmem: migrate with VMStateDescription, Marc-André Lureau, 2015/06/26
- [Qemu-devel] [PATCH 21/39] ivshmem: use common is_power_of_2(), Marc-André Lureau, 2015/06/26
- [Qemu-devel] [PATCH 24/39] ivshmem: check shm isn't already initialized, Marc-André Lureau, 2015/06/26
- [Qemu-devel] [PATCH 23/39] ivshmem: shmfd can be 0, Marc-André Lureau, 2015/06/26
- [Qemu-devel] [PATCH 25/39] ivshmem: add device description, Marc-André Lureau, 2015/06/26
- [Qemu-devel] [PATCH 26/39] ivshmem: fix pci_ivshmem_exit(), Marc-André Lureau, 2015/06/26
- [Qemu-devel] [PATCH 28/39] ivshmem: error on too many eventfd received,
Marc-André Lureau <=
- [Qemu-devel] [PATCH 27/39] ivshmem: replace 'guest' for 'peer' appropriately, Marc-André Lureau, 2015/06/26
- [Qemu-devel] [PATCH 29/39] ivshmem: reset mask on device reset, Marc-André Lureau, 2015/06/26
- [Qemu-devel] [PATCH 31/39] ivshmem-client: check the number of vectors, Marc-André Lureau, 2015/06/26
- [Qemu-devel] [PATCH 32/39] ivshmem-server: use a uint16 for client ID, Marc-André Lureau, 2015/06/26
- [Qemu-devel] [PATCH 33/39] ivshmem-server: include necessary headers, Marc-André Lureau, 2015/06/26
- [Qemu-devel] [PATCH 30/39] contrib: add ivshmem client and server, Marc-André Lureau, 2015/06/26
- [Qemu-devel] [PATCH 34/39] docs: update ivshmem device spec, Marc-André Lureau, 2015/06/26
- [Qemu-devel] [PATCH 36/39] contrib: remove unnecessary strdup(), Marc-André Lureau, 2015/06/26