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authorj.nixdorf@avm.de <j.nixdorf@avm.de>2021-01-05 15:17:01 +0100
committerTrond Myklebust <trond.myklebust@hammerspace.com>2021-01-10 13:32:51 -0500
commit86b53fbf08f48d353a86a06aef537e78e82ba721 (patch)
tree41b02ad37bf5a3496704ffe43cc7e33b8876a0bc /net
parentc98e9daa59a611ff4e163689815f40380c912415 (diff)
net: sunrpc: interpret the return value of kstrtou32 correctly
A return value of 0 means success. This is documented in lib/kstrtox.c. This was found by trying to mount an NFS share from a link-local IPv6 address with the interface specified by its index: mount("[fe80::1%1]:/srv/nfs", "/mnt", "nfs", 0, "nolock,addr=fe80::1%1") Before this commit this failed with EINVAL and also caused the following message in dmesg: [...] NFS: bad IP address specified: addr=fe80::1%1 The syscall using the same address based on the interface name instead of its index succeeds. Credits for this patch go to my colleague Christian Speich, who traced the origin of this bug to this line of code. Signed-off-by: Johannes Nixdorf <j.nixdorf@avm.de> Fixes: 00cfaa943ec3 ("replace strict_strto calls") Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
Diffstat (limited to 'net')
-rw-r--r--net/sunrpc/addr.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/net/sunrpc/addr.c b/net/sunrpc/addr.c
index 010dcb876f9d..6e4dbd577a39 100644
--- a/net/sunrpc/addr.c
+++ b/net/sunrpc/addr.c
@@ -185,7 +185,7 @@ static int rpc_parse_scope_id(struct net *net, const char *buf,
scope_id = dev->ifindex;
dev_put(dev);
} else {
- if (kstrtou32(p, 10, &scope_id) == 0) {
+ if (kstrtou32(p, 10, &scope_id) != 0) {
kfree(p);
return 0;
}