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- An internal database inconsistency bug was repaired where the server

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would segfault if a client attempted to renew a lease that had been
  loaded from persistent storage.  [ISC-Bugs #17068]
This commit is contained in:
David Hankins 2007-08-22 15:42:13 +00:00
parent ebb73fe3fd
commit 8dfd574485
3 changed files with 41 additions and 23 deletions
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5
RELNOTES
View File

@ -51,6 +51,7 @@ The system has only been tested on Linux, FreeBSD, and Solaris, and
may not work on other platforms. Please report any problems and
suggested fixes to <dhcp-users@isc.org>.
Changes since 4.0.0a2
- Fix for startup where there are no IPv4 addresses on an interface.
@ -67,6 +68,10 @@ suggested fixes to <dhcp-users@isc.org>.
- DHCPv6 is now the default. You can disable DHCPv6 support using the
"--disable-dhcpv6" flag when you run the configure script.
- An internal database inconsistency bug was repaired where the server
would segfault if a client attempted to renew a lease that had been
loaded from persistent storage.
Changes since 4.0.0a1
- Bug in octal parsing fixed. Thanks to Bernd Fuhrmann for the report

12
server/confpars.c
View File

@ -3901,18 +3901,6 @@ parse_ia_na_declaration(struct parse *cfile) {
return;
}
add_lease6(pool, iaaddr, end_time);
switch (state) {
case FTS_ABANDONED:
release_lease6(pool, iaaddr);
break;
case FTS_EXPIRED:
decline_lease6(pool, iaaddr);
iaaddr->state = FTS_EXPIRED;
break;
case FTS_RELEASED:
release_lease6(pool, iaaddr);
break;
}
ipv6_pool_dereference(&pool, MDL);
iaaddr_dereference(&iaaddr, MDL);
}

39
server/mdb6.c
View File

@ -672,7 +672,10 @@ add_lease6(struct ipv6_pool *pool, struct iaaddr *iaaddr,
struct iaaddr *test_iaaddr;
struct iaaddr *tmp_iaaddr;
/* If a state was not assigned by the caller, assume active. */
if (iaaddr->state == 0)
iaaddr->state = FTS_ACTIVE;
iaaddr->valid_lifetime_end_time = valid_lifetime_end_time;
ipv6_pool_reference(&iaaddr->ipv6_pool, pool, MDL);
@ -683,10 +686,25 @@ add_lease6(struct ipv6_pool *pool, struct iaaddr *iaaddr,
test_iaaddr = NULL;
if (iaaddr_hash_lookup(&test_iaaddr, pool->addrs,
&iaaddr->addr, sizeof(iaaddr->addr), MDL)) {
isc_heap_delete(pool->active_timeouts, test_iaaddr->heap_index);
/* XXX: we should probably ask the iaaddr what heap it is on
* (as a consistency check).
* XXX: we should probably have one function to "put this lease
* on its heap" rather than doing these if's everywhere. If
* you add more states to this list, don't.
*/
if ((test_iaaddr->state == FTS_ACTIVE) ||
(test_iaaddr->state == FTS_ABANDONED)) {
isc_heap_delete(pool->active_timeouts,
test_iaaddr->heap_index);
pool->num_active--;
} else {
isc_heap_delete(pool->inactive_timeouts,
test_iaaddr->heap_index);
pool->num_inactive--;
}
iaaddr_hash_delete(pool->addrs, &test_iaaddr->addr,
sizeof(test_iaaddr->addr), MDL);
pool->num_active--;
/*
* We're going to do a bit of evil trickery here.
@ -708,7 +726,18 @@ add_lease6(struct ipv6_pool *pool, struct iaaddr *iaaddr,
iaaddr_reference(&tmp_iaaddr, iaaddr, MDL);
iaaddr_hash_add(pool->addrs, &tmp_iaaddr->addr,
sizeof(tmp_iaaddr->addr), iaaddr, MDL);
insert_result = isc_heap_insert(pool->active_timeouts, tmp_iaaddr);
if ((tmp_iaaddr->state == FTS_ACTIVE) ||
(tmp_iaaddr->state == FTS_ABANDONED)) {
insert_result = isc_heap_insert(pool->active_timeouts,
tmp_iaaddr);
if (insert_result == ISC_R_SUCCESS)
pool->num_active++;
} else {
insert_result = isc_heap_insert(pool->inactive_timeouts,
tmp_iaaddr);
if (insert_result == ISC_R_SUCCESS)
pool->num_inactive++;
}
if (insert_result != ISC_R_SUCCESS) {
iaaddr_hash_delete(pool->addrs, &iaaddr->addr,
sizeof(iaaddr->addr), MDL);
@ -721,10 +750,6 @@ add_lease6(struct ipv6_pool *pool, struct iaaddr *iaaddr,
* is a reference in the heap/hash, after all.
*/
/*
* And we're done.
*/
pool->num_active++;
return ISC_R_SUCCESS;
}