https://bugs.dpdk.org/show_bug.cgi?id=463
Bug ID: 463
Summary: In Mellanox MLX5 driver, NULL pointer access in
mlx5_ipool_malloc()
Product: DPDK
Version: unspecified
Hardware: ARM
OS: Linux
Status: UNCONFIRMED
Severity: major
Priority: Normal
Component: testpmd
Assignee: dev@dpdk.org
Reporter: lijian.zh...@arm.com
Target Milestone: ---
With the last dpdk master branch code, Mellanox ConnectX-5, Ubuntu-18.04, below
code is trying to access NULL pointer.
rte_bitmap_scan(trunk->bmp, &iidx, &slab) is calling with trunk->bmp, but it's
a NULL pointer.
(gdb) p pool->free_list
$1 = 65535
(gdb) n
(gdb)
(gdb)
(gdb) p trunk
$2 = (struct mlx5_indexed_trunk *) 0x17ff01d80
(gdb) p *trunk
$3 = {idx = 0, prev = 65535, next = 65535, free = 4096, bmp = 0x0, data =
0x17ff01dc0 ""}
(gdb) p trunk->bmp
$4 = (struct rte_bitmap *) 0x0
(gdb)
Below is the system information of my server.
login@vpp-tx2-01:~$ cat /etc/os-release
NAME="Ubuntu"
VERSION="18.04.4 LTS (Bionic Beaver)"
ID=ubuntu
ID_LIKE=debian
PRETTY_NAME="Ubuntu 18.04.4 LTS"
VERSION_ID="18.04"
HOME_URL="https://www.ubuntu.com/";
SUPPORT_URL="https://help.ubuntu.com/";
BUG_REPORT_URL="https://bugs.launchpad.net/ubuntu/";
PRIVACY_POLICY_URL="https://www.ubuntu.com/legal/terms-and-policies/privacy-policy";
VERSION_CODENAME=bionic
UBUNTU_CODENAME=bionic
login@vpp-tx2-01:~$ lscpu
Architecture: aarch64
Byte Order: Little Endian
CPU(s): 256
On-line CPU(s) list: 0-255
Thread(s) per core: 4
Core(s) per socket: 32
Socket(s): 2
NUMA node(s): 2
Vendor ID: Cavium
Model: 2
Model name: ThunderX2 99xx
Stepping: 0x1
CPU max MHz: 2500.0000
CPU min MHz: 1000.0000
BogoMIPS: 400.00
L1d cache: 32K
L1i cache: 32K
L2 cache: 256K
L3 cache: 32768K
NUMA node0 CPU(s): 0-127
NUMA node1 CPU(s): 128-255
Flags: fp asimd evtstrm aes pmull sha1 sha2 crc32 atomics cpuid
asimdrdm
login@vpp-tx2-01:~$ sudo lshw -c network -businfo
[sudo] password for login:
Bus info Device Class Description
====================================================
pci@0000:05:00.0 enp5s0f0 network Ethernet Controller XL710 for 40GbE
QSFP+
pci@0000:05:00.1 enp5s0f1 network Ethernet Controller XL710 for 40GbE
QSFP+
pci@0000:08:00.0 enp8s0f0 network I350 Gigabit Network Connection
pci@0000:08:00.1 enp8s0f1 network I350 Gigabit Network Connection
pci@0000:0b:00.0 enp11s0f0 network MT27800 Family [ConnectX-5]
pci@0000:0b:00.1 enp11s0f1 network MT27800 Family [ConnectX-5]
pci@0000:0e:00.0 eno1 network FastLinQ QL41000 Series 10/25/40/50GbE
Controller
pci@0000:0e:00.1 eno2 network FastLinQ QL41000 Series 10/25/40/50GbE
Controller
pci@0000:91:00.0 enp145s0f0 network Ethernet Controller XL710 for 40GbE
QSFP+
pci@0000:91:00.1 enp145s0f1 network Ethernet Controller XL710 for 40GbE
QSFP+
pci@0000:9a:00.0 enp154s0f0 network MT27800 Family [ConnectX-5]
pci@0000:9a:00.1 enp154s0f1 network MT27800 Family [ConnectX-5]
login@vpp-tx2-01:~$ ofed_info -s
MLNX_OFED_LINUX-5.0-2.1.8.0:
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