From: Rahul Lakkireddy <rahul.lakkireddy@chelsio.com>
To: dev@dpdk.org
Cc: Felix Marti <felix@chelsio.com>,
Kumar Sanghvi <kumaras@chelsio.com>,
Nirranjan Kirubaharan <nirranjan@chelsio.com>
Subject: [PATCH] vfio: Fix overflow while assigning vfio BAR region offset and size
Date: Tue, 16 Jun 2015 19:46:09 +0530 [thread overview]
Message-ID: <61d1c9174f7f9159d4005dd2cea16c7719cec964.1434462470.git.rahul.lakkireddy@chelsio.com> (raw)
After the commit-id 90a1633b2 (eal/linux: allow to map BARs with MSI-X tables),
VFIO stopped working. On further debug, found that although BAR region
offset and size from vfio are read as u64, they are truncated when assigned to
uint32_t variables resulting in wrong offset being passed for mmap.
The fix is to use uint64_t for offset and size.
Signed-off-by: Rahul Lakkireddy <rahul.lakkireddy@chelsio.com>
Signed-off-by: Kumar Sanghvi <kumaras@chelsio.com>
---
lib/librte_eal/linuxapp/eal/eal_pci_vfio.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/lib/librte_eal/linuxapp/eal/eal_pci_vfio.c b/lib/librte_eal/linuxapp/eal/eal_pci_vfio.c
index 426953a..d0385ff 100644
--- a/lib/librte_eal/linuxapp/eal/eal_pci_vfio.c
+++ b/lib/librte_eal/linuxapp/eal/eal_pci_vfio.c
@@ -728,7 +728,7 @@ pci_vfio_map_resource(struct rte_pci_device *dev)
struct vfio_region_info reg = { .argsz = sizeof(reg) };
void *bar_addr;
struct memreg {
- uint32_t offset, size;
+ uint64_t offset, size;
} memreg[2] = {};
reg.index = i;
@@ -771,7 +771,7 @@ pci_vfio_map_resource(struct rte_pci_device *dev)
RTE_LOG(DEBUG, EAL,
"Trying to map BAR %d that contains the MSI-X "
"table. Trying offsets: "
- "%04x:%04x, %04x:%04x\n", i,
+ "%04lx:%04lx, %04lx:%04lx\n", i,
memreg[0].offset, memreg[0].size,
memreg[1].offset, memreg[1].size);
}
--
2.4.1
next reply other threads:[~2015-06-16 14:17 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-06-16 14:16 Rahul Lakkireddy [this message]
2015-06-17 12:09 ` [PATCH] vfio: Fix overflow while assigning vfio BAR region offset and size Thomas Monjalon
2015-06-18 14:23 ` Rahul Lakkireddy
2015-06-23 15:00 ` [PATCH v2] " Rahul Lakkireddy
2015-06-30 21:12 ` Thomas Monjalon
2015-07-01 8:34 ` Alejandro Lucero
2015-07-01 10:00 ` Burakov, Anatoly
2015-07-06 15:45 ` Alejandro Lucero
2015-07-07 7:56 ` Rahul Lakkireddy
2015-07-07 9:08 ` Burakov, Anatoly
2015-07-07 10:40 ` Rahul Lakkireddy
2015-07-07 10:50 ` Burakov, Anatoly
2015-07-10 9:54 ` Rahul Lakkireddy
2015-07-10 17:27 ` Alejandro Lucero
2015-07-13 8:51 ` [PATCH v3] " Rahul Lakkireddy
2015-07-14 8:56 ` Thomas Monjalon
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