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* [dpdk-dev] [PATCH v2] librte_eal: fix wrong assert for arm and ppc
@ 2017-09-21 15:59 Lukasz Majczak
  2017-09-22  8:31 ` Jan Viktorin
  2017-09-25  7:34 ` [dpdk-dev] [PATCH v3] " Lukasz Majczak
  0 siblings, 2 replies; 6+ messages in thread
From: Lukasz Majczak @ 2017-09-21 15:59 UTC (permalink / raw)
  To: viktorin, chaozhu; +Cc: dev, 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>
---
 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] 6+ messages in thread

end of thread, other threads:[~2017-10-05 22:16 UTC | newest]

Thread overview: 6+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2017-09-21 15:59 [dpdk-dev] [PATCH v2] librte_eal: fix wrong assert for arm and ppc Lukasz Majczak
2017-09-22  8:31 ` Jan Viktorin
2017-09-25  7:34 ` [dpdk-dev] [PATCH v3] " Lukasz Majczak
2017-09-28  2:01   ` Chao Zhu
2017-09-28  6:54   ` [dpdk-dev] [PATCH v4] " Lukasz Majczak
2017-10-05 22:16     ` Thomas Monjalon

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