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authorAnton Ivanov <anton.ivanov@cambridgegreys.com>2019-08-09 08:40:19 +0100
committerRichard Weinberger <richard@nod.at>2019-09-15 21:37:09 +0200
commit5853193103e6e3be983cc86d61b204ed27a22716 (patch)
tree1310c29e079015940dba8441b428f0423c551bf0 /arch/um
parent77f1073c2c1bbea7ba8794103924ecd0d3961ffe (diff)
um: Add checks to mtu parameter parsing
Adds a sanity check to the parsing of mtu command line param Signed-off-by: Anton Ivanov <anton.ivanov@cambridgegreys.com> Signed-off-by: Richard Weinberger <richard@nod.at>
Diffstat (limited to 'arch/um')
-rw-r--r--arch/um/drivers/vector_kern.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/arch/um/drivers/vector_kern.c b/arch/um/drivers/vector_kern.c
index 8fa094770965..45ec9bc2430f 100644
--- a/arch/um/drivers/vector_kern.c
+++ b/arch/um/drivers/vector_kern.c
@@ -121,7 +121,8 @@ static int get_mtu(struct arglist *def)
if (mtu != NULL) {
if (kstrtoul(mtu, 10, &result) == 0)
- return result;
+ if ((result < (1 << 16) - 1) && (result >= 576))
+ return result;
}
return ETH_MAX_PACKET;
}