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IB/srpt: Do not accept invalid initiator port names

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Make srpt_parse_i_port_id() return a negative value if hex2bin()
fails.

Fixes: commit a42d985bd5b2 ("ib_srpt: Initial SRP Target merge for v3.3-rc1")
Signed-off-by: Bart Van Assche <bart.vanassche@wdc.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Doug Ledford <dledford@redhat.com>
This commit is contained in:
Bart Van Assche 2017-10-11 10:27:22 -07:00 committed by Doug Ledford
parent 69abc735f4
commit c70ca38960
1 changed files with 4 additions and 5 deletions
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9
drivers/infiniband/ulp/srpt/ib_srpt.c
View File

@ -2777,7 +2777,7 @@ static int srpt_parse_i_port_id(u8 i_port_id[16], const char *name)
{
const char *p;
unsigned len, count, leading_zero_bytes;
int ret, rc;
int ret;
p = name;
if (strncasecmp(p, "0x", 2) == 0)
@ -2789,10 +2789,9 @@ static int srpt_parse_i_port_id(u8 i_port_id[16], const char *name)
count = min(len / 2, 16U);
leading_zero_bytes = 16 - count;
memset(i_port_id, 0, leading_zero_bytes);
rc = hex2bin(i_port_id + leading_zero_bytes, p, count);
if (rc < 0)
pr_debug("hex2bin failed for srpt_parse_i_port_id: %d\n", rc);
ret = 0;
ret = hex2bin(i_port_id + leading_zero_bytes, p, count);
if (ret < 0)
pr_debug("hex2bin failed for srpt_parse_i_port_id: %d\n", ret);
out:
return ret;
}