[dpdk-dev] [PATCH v3] eal/linuxapp: check mmap return value MAP_FAILED
Seth Howell
seth.howell at intel.com
Mon Aug 28 23:49:12 CEST 2017
If mmap fails, it will return the value MAP_FAILED. Checking for this
return code allows us to properly identify mmap failures and report
them as such to the calling function.
Signed-off-by: Seth Howell <seth.howell at intel.com>
---
lib/librte_eal/linuxapp/eal/eal_memory.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/lib/librte_eal/linuxapp/eal/eal_memory.c b/lib/librte_eal/linuxapp/eal/eal_memory.c
index 5279128..63fec29 100644
--- a/lib/librte_eal/linuxapp/eal/eal_memory.c
+++ b/lib/librte_eal/linuxapp/eal/eal_memory.c
@@ -716,6 +716,8 @@ create_shared_memory(const char *filename, const size_t mem_size)
}
retval = mmap(NULL, mem_size, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);
close(fd);
+ if (retval == MAP_FAILED)
+ return NULL;
return retval;
}
--
2.9.5
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