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DO NOT ALLOCATE 2+K OBJECTS ON THE KERNEL STACK!!!!

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found by: Getting my u-area overwritten
This commit is contained in:
julian 2001-08-10 07:50:14 +00:00
parent 8eb3df1c5a
commit 257f6bb43a
1 changed files with 25 additions and 12 deletions
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37
sys/isa/isa_common.c
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@ -386,17 +386,19 @@ isa_assign_resources(device_t child)
{
struct isa_device *idev = DEVTOISA(child);
struct isa_config_entry *ice;
struct isa_config config;
struct isa_config *cfg;
bzero(&config, sizeof config);
cfg = malloc(sizeof(struct isa_config), M_TEMP, M_NOWAIT|M_ZERO);
if (cfg == NULL)
return(0);
TAILQ_FOREACH(ice, &idev->id_configs, ice_link) {
if (!isa_find_memory(child, &ice->ice_config, &config))
if (!isa_find_memory(child, &ice->ice_config, cfg))
continue;
if (!isa_find_port(child, &ice->ice_config, &config))
if (!isa_find_port(child, &ice->ice_config, cfg))
continue;
if (!isa_find_irq(child, &ice->ice_config, &config))
if (!isa_find_irq(child, &ice->ice_config, cfg))
continue;
if (!isa_find_drq(child, &ice->ice_config, &config))
if (!isa_find_drq(child, &ice->ice_config, cfg))
continue;
/*
@ -405,7 +407,8 @@ isa_assign_resources(device_t child)
*/
if (idev->id_config_cb) {
idev->id_config_cb(idev->id_config_arg,
&config, 1);
cfg, 1);
free(cfg, M_TEMP);
return 1;
}
}
@ -417,11 +420,12 @@ isa_assign_resources(device_t child)
printf(" can't assign resources\n");
if (bootverbose)
isa_print_child(device_get_parent(child), child);
bzero(&config, sizeof config);
bzero(cfg, sizeof (*cfg));
if (idev->id_config_cb)
idev->id_config_cb(idev->id_config_arg, &config, 0);
idev->id_config_cb(idev->id_config_arg, cfg, 0);
device_disable(child);
free(cfg, M_TEMP);
return 0;
}
@ -432,6 +436,7 @@ void
isa_probe_children(device_t dev)
{
device_t *children;
struct isa_config *cfg;
int nchildren, i;
/*
@ -448,16 +453,24 @@ isa_probe_children(device_t dev)
*/
if (bootverbose)
printf("isa_probe_children: disabling PnP devices\n");
cfg = malloc(sizeof(*cfg), M_TEMP, M_NOWAIT|M_ZERO);
if (cfg == NULL) {
free(children, M_TEMP);
return;
}
for (i = 0; i < nchildren; i++) {
device_t child = children[i];
struct isa_device *idev = DEVTOISA(child);
struct isa_config config;
bzero(&config, sizeof config);
bzero(cfg, sizeof(*cfg));
if (idev->id_config_cb)
idev->id_config_cb(idev->id_config_arg, &config, 0);
idev->id_config_cb(idev->id_config_arg, cfg, 0);
}
free(cfg, M_TEMP);
/*
* Next probe all non-pnp devices so that they claim their
* resources first.