* [dpdk-stable] [PATCH v4] librte_eal: fix wrong assert for arm and ppc
[not found] <20170925073441.23494-1-lma@semihalf.com>
@ 2017-09-28 6:54 ` Lukasz Majczak
2017-10-05 22:16 ` [dpdk-stable] [dpdk-dev] " Thomas Monjalon
0 siblings, 1 reply; 2+ messages in thread
From: Lukasz Majczak @ 2017-09-28 6:54 UTC (permalink / raw)
To: dev; +Cc: stable, Lukasz Majczak
The assertion of return value from the open() function is done against
0, while it is a correct value - open() returns -1 in case of an error.
It causes problems while trying to run as a daemon, in which case, this
call to open() will return 0 as a valid descriptor.
Fixes: b94e5c9406b5 ("eal/arm: add CPU flags for ARMv7")
Fixes: 97523f822ba9 ("eal/arm: add CPU flags for ARMv8")
Fixes: 9ae155385686 ("eal/ppc: cpu flag checks for IBM Power")
Signed-off-by: Lukasz Majczak <lma@semihalf.com>
Acked-by: Jan Viktorin <viktorin@rehivetech.com>
Acked-by: Chao Zhu <chaozhu@linux.vnet.ibm.com>
---
lib/librte_eal/common/arch/arm/rte_cpuflags.c | 2 +-
lib/librte_eal/common/arch/ppc_64/rte_cpuflags.c | 2 +-
2 files changed, 2 insertions(+), 2 deletions(-)
diff --git a/lib/librte_eal/common/arch/arm/rte_cpuflags.c b/lib/librte_eal/common/arch/arm/rte_cpuflags.c
index 5636e9c1d..88f1cbe37 100644
--- a/lib/librte_eal/common/arch/arm/rte_cpuflags.c
+++ b/lib/librte_eal/common/arch/arm/rte_cpuflags.c
@@ -137,7 +137,7 @@ rte_cpu_get_features(hwcap_registers_t out)
_Elfx_auxv_t auxv;
auxv_fd = open("/proc/self/auxv", O_RDONLY);
- assert(auxv_fd);
+ assert(auxv_fd != -1);
while (read(auxv_fd, &auxv, sizeof(auxv)) == sizeof(auxv)) {
if (auxv.a_type == AT_HWCAP) {
out[REG_HWCAP] = auxv.a_un.a_val;
diff --git a/lib/librte_eal/common/arch/ppc_64/rte_cpuflags.c b/lib/librte_eal/common/arch/ppc_64/rte_cpuflags.c
index fcf96e045..970a61c5e 100644
--- a/lib/librte_eal/common/arch/ppc_64/rte_cpuflags.c
+++ b/lib/librte_eal/common/arch/ppc_64/rte_cpuflags.c
@@ -108,7 +108,7 @@ rte_cpu_get_features(hwcap_registers_t out)
Elf64_auxv_t auxv;
auxv_fd = open("/proc/self/auxv", O_RDONLY);
- assert(auxv_fd);
+ assert(auxv_fd != -1);
while (read(auxv_fd, &auxv,
sizeof(Elf64_auxv_t)) == sizeof(Elf64_auxv_t)) {
if (auxv.a_type == AT_HWCAP)
--
2.14.1
^ permalink raw reply [flat|nested] 2+ messages in thread