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afs: Trace protocol errors

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Trace protocol errors detected in afs.

Signed-off-by: David Howells <dhowells@redhat.com>
This commit is contained in:
David Howells
2018-04-06 14:17:25 +01:00
parent 63a4681ff3
commit 5f702c8e12
7 changed files with 79 additions and 46 deletions
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20
fs/afs/vlclient.c
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@@ -450,7 +450,7 @@ again:
call->count2 = ntohl(*bp); /* Type or next count */
if (call->count > YFS_MAXENDPOINTS)
return -EBADMSG;
return afs_protocol_error(call, -EBADMSG);
alist = afs_alloc_addrlist(call->count, FS_SERVICE, AFS_FS_PORT);
if (!alist)
@@ -474,7 +474,7 @@ again:
size = sizeof(__be32) * (1 + 4 + 1);
break;
default:
return -EBADMSG;
return afs_protocol_error(call, -EBADMSG);
}
size += sizeof(__be32);
@@ -487,18 +487,18 @@ again:
switch (call->count2) {
case YFS_ENDPOINT_IPV4:
if (ntohl(bp[0]) != sizeof(__be32) * 2)
return -EBADMSG;
return afs_protocol_error(call, -EBADMSG);
afs_merge_fs_addr4(alist, bp[1], ntohl(bp[2]));
bp += 3;
break;
case YFS_ENDPOINT_IPV6:
if (ntohl(bp[0]) != sizeof(__be32) * 5)
return -EBADMSG;
return afs_protocol_error(call, -EBADMSG);
afs_merge_fs_addr6(alist, bp + 1, ntohl(bp[5]));
bp += 6;
break;
default:
return -EBADMSG;
return afs_protocol_error(call, -EBADMSG);
}
/* Got either the type of the next entry or the count of
@@ -517,7 +517,7 @@ again:
if (!call->count)
goto end;
if (call->count > YFS_MAXENDPOINTS)
return -EBADMSG;
return afs_protocol_error(call, -EBADMSG);
call->unmarshall = 3;
@@ -545,7 +545,7 @@ again:
size = sizeof(__be32) * (1 + 4 + 1);
break;
default:
return -EBADMSG;
return afs_protocol_error(call, -EBADMSG);
}
if (call->count > 1)
@@ -558,16 +558,16 @@ again:
switch (call->count2) {
case YFS_ENDPOINT_IPV4:
if (ntohl(bp[0]) != sizeof(__be32) * 2)
return -EBADMSG;
return afs_protocol_error(call, -EBADMSG);
bp += 3;
break;
case YFS_ENDPOINT_IPV6:
if (ntohl(bp[0]) != sizeof(__be32) * 5)
return -EBADMSG;
return afs_protocol_error(call, -EBADMSG);
bp += 6;
break;
default:
return -EBADMSG;
return afs_protocol_error(call, -EBADMSG);
}
/* Got either the type of the next entry or the count of