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Fixes an issue with handling of stream reset. When a

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reset comes in we need to calculate the length and
therefore the number of listed streams (if any) based
on the TLV type. Otherwise if we get a retran we could
in theory panic by sending a notification to a user with
a incorrect list and thus no memory listing the streams.
Found in IOS by devtest :-)
Approved by:	gnn
This commit is contained in:
Randall Stewart 2006-11-09 21:01:07 +00:00
parent f31202e5dd
commit 08598d7067
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=164139
2 changed files with 3 additions and 4 deletions
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6
sys/netinet/sctp_input.c
View File

@ -2715,8 +2715,7 @@ sctp_clean_up_stream_reset(struct sctp_tcb *stcb)
static int
sctp_handle_stream_reset_response(struct sctp_tcb *stcb,
uint32_t seq, uint32_t action,
struct sctp_stream_reset_response *respin
)
struct sctp_stream_reset_response *respin)
{
uint16_t type;
int lparm_len;
@ -2735,8 +2734,8 @@ sctp_handle_stream_reset_response(struct sctp_tcb *stcb,
stcb->asoc.str_reset_seq_out++;
type = ntohs(srparam->ph.param_type);
lparm_len = ntohs(srparam->ph.param_length);
number_entries = (lparm_len - sizeof(struct sctp_stream_reset_out_request)) / sizeof(uint16_t);
if (type == SCTP_STR_RESET_OUT_REQUEST) {
number_entries = (lparm_len - sizeof(struct sctp_stream_reset_out_request)) / sizeof(uint16_t);
asoc->stream_reset_out_is_outstanding = 0;
if (asoc->stream_reset_outstanding)
asoc->stream_reset_outstanding--;
@ -2748,6 +2747,7 @@ sctp_handle_stream_reset_response(struct sctp_tcb *stcb,
}
} else if (type == SCTP_STR_RESET_IN_REQUEST) {
/* Answered my request */
number_entries = (lparm_len - sizeof(struct sctp_stream_reset_in_request)) / sizeof(uint16_t);
if (asoc->stream_reset_outstanding)
asoc->stream_reset_outstanding--;
if (action != SCTP_STREAM_RESET_PERFORMED) {

1
sys/netinet/sctp_usrreq.c
View File

@ -1733,7 +1733,6 @@ sctp_do_connect_x(struct socket *so,
stcb = sctp_aloc_assoc(inp, sa, 1, &error, 0);
if (stcb == NULL) {
/* Gak! no memory */
error = ENOMEM;
goto out_now;
}
/* move to second address */