From 5fe6e23c61bf1fde7a1a0568b38d32c4e625f0ef Mon Sep 17 00:00:00 2001 From: Stefan Reinauer Date: Fri, 31 Jul 2009 11:39:55 +0000 Subject: Catch various cases in libpayload where malloc() or memalign() return NULL Signed-off-by: Stefan Reinauer Acked-by: Peter Stuge git-svn-id: svn://svn.coreboot.org/coreboot/trunk@4474 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1 --- payloads/libpayload/drivers/usb/uhci.c | 22 ++++++++++++++++++++++ payloads/libpayload/drivers/usb/uhci_rh.c | 3 +++ payloads/libpayload/drivers/usb/usb.c | 23 ++++++++++++++++------- payloads/libpayload/drivers/usb/usbhid.c | 2 ++ payloads/libpayload/drivers/usb/usbhub.c | 6 ++++++ payloads/libpayload/drivers/usb/usbmsc.c | 3 +++ payloads/libpayload/include/usb/usb.h | 2 ++ payloads/libpayload/libc/lar.c | 4 ++++ payloads/libpayload/libc/malloc.c | 2 ++ payloads/libpayload/libc/readline.c | 2 ++ 10 files changed, 62 insertions(+), 7 deletions(-) (limited to 'payloads/libpayload') diff --git a/payloads/libpayload/drivers/usb/uhci.c b/payloads/libpayload/drivers/usb/uhci.c index 198b6c0846..def6b45084 100644 --- a/payloads/libpayload/drivers/usb/uhci.c +++ b/payloads/libpayload/drivers/usb/uhci.c @@ -130,7 +130,13 @@ uhci_init (pcidev_t addr) int i; hci_t *controller = new_controller (); + if (!controller) + usb_fatal("Could not create USB controller instance.\n"); + controller->instance = malloc (sizeof (uhci_t)); + if(!controller->instance) + usb_fatal("Not enough memory creating USB controller instance.\n"); + controller->start = uhci_start; controller->stop = uhci_stop; controller->reset = uhci_reset; @@ -157,6 +163,9 @@ uhci_init (pcidev_t addr) pci_write_config32 (controller->bus_address, 0xc0, 0x8f00); UHCI_INST (controller)->framelistptr = memalign (0x1000, 1024 * sizeof (flistp_t *)); /* 4kb aligned to 4kb */ + if (! UHCI_INST (controller)->framelistptr) + usb_fatal("Not enough memory for USB frame list pointer.\n"); + memset (UHCI_INST (controller)->framelistptr, 0, 1024 * sizeof (flistp_t)); @@ -168,6 +177,8 @@ uhci_init (pcidev_t addr) for some reason. Not a problem now. */ td_t *antiberserk = memalign(16, sizeof(td_t)); + if (!antiberserk) + usb_fatal("Not enough memory for chipset workaround.\n"); memset(antiberserk, 0, sizeof(td_t)); UHCI_INST (controller)->qh_prei = memalign (16, sizeof (qh_t)); @@ -175,6 +186,12 @@ uhci_init (pcidev_t addr) UHCI_INST (controller)->qh_data = memalign (16, sizeof (qh_t)); UHCI_INST (controller)->qh_last = memalign (16, sizeof (qh_t)); + if (! UHCI_INST (controller)->qh_prei || + ! UHCI_INST (controller)->qh_intr || + ! UHCI_INST (controller)->qh_data || + ! UHCI_INST (controller)->qh_last) + usb_fatal ("Not enough memory for USB controller queues.\n"); + UHCI_INST (controller)->qh_prei->headlinkptr.ptr = virt_to_phys (UHCI_INST (controller)->qh_intr); UHCI_INST (controller)->qh_prei->headlinkptr.queue_head = 1; @@ -508,11 +525,16 @@ uhci_create_intr_queue (endpoint_t *ep, int reqsize, int reqcount, int reqtiming td_t *tds = memalign(16, sizeof(td_t) * reqcount); qh_t *qh = memalign(16, sizeof(qh_t)); + if (!data || !tds || !qh) + usb_fatal ("Not enough memory to create USB intr queue prerequisites.\n"); + qh->elementlinkptr.ptr = virt_to_phys(tds); qh->elementlinkptr.queue_head = 0; qh->elementlinkptr.terminate = 0; intr_q *q = malloc(sizeof(intr_q)); + if (!q) + usb_fatal ("Not enough memory to create USB intr queue.\n"); q->qh = qh; q->tds = tds; q->data = data; diff --git a/payloads/libpayload/drivers/usb/uhci_rh.c b/payloads/libpayload/drivers/usb/uhci_rh.c index cc3c600289..2f4c7d839c 100644 --- a/payloads/libpayload/drivers/usb/uhci_rh.c +++ b/payloads/libpayload/drivers/usb/uhci_rh.c @@ -157,6 +157,9 @@ uhci_rh_init (usbdev_t *dev) uhci_rh_enable_port (dev, 1); uhci_rh_enable_port (dev, 2); dev->data = malloc (sizeof (rh_inst_t)); + if (!dev->data) + usb_fatal ("Not enough memory for UHCI RH.\n"); + RH_INST (dev)->port[0] = -1; RH_INST (dev)->port[1] = -1; diff --git a/payloads/libpayload/drivers/usb/usb.c b/payloads/libpayload/drivers/usb/usb.c index d536d31d86..25e80065d7 100644 --- a/payloads/libpayload/drivers/usb/usb.c +++ b/payloads/libpayload/drivers/usb/usb.c @@ -33,14 +33,16 @@ hci_t *usb_hcs = 0; hci_t * -new_controller () +new_controller (void) { hci_t *controller = malloc (sizeof (hci_t)); - /* atomic */ - controller->next = usb_hcs; - usb_hcs = controller; - /* atomic end */ + if (controller) { + /* atomic */ + controller->next = usb_hcs; + usb_hcs = controller; + /* atomic end */ + } return controller; } @@ -48,13 +50,13 @@ new_controller () void detach_controller (hci_t *controller) { - if (controller == 0) + if (controller == NULL) return; if (usb_hcs == controller) { usb_hcs = controller->next; } else { hci_t *it = usb_hcs; - while (it != 0) { + while (it != NULL) { if (it->next == controller) { it->next = controller->next; return; @@ -386,3 +388,10 @@ usb_attach_device(hci_t *controller, int hubaddress, int port, int lowspeed) newdev_t->init (newdev_t); return newdev; } + +void +usb_fatal (const char *message) +{ + printf(message); + for (;;) ; +} diff --git a/payloads/libpayload/drivers/usb/usbhid.c b/payloads/libpayload/drivers/usb/usbhid.c index 44be9ce8d9..ee217c36d8 100644 --- a/payloads/libpayload/drivers/usb/usbhid.c +++ b/payloads/libpayload/drivers/usb/usbhid.c @@ -169,6 +169,8 @@ usb_hid_init (usbdev_t *dev) boot_protos[interface->bInterfaceProtocol]); if (interface->bInterfaceProtocol == hid_boot_proto_keyboard) { dev->data = malloc (sizeof (usbhid_inst_t)); + if (!dev->data) + usb_fatal("Not enough memory for USB HID device.\n"); printf (" configuring...\n"); usb_hid_set_protocol(dev, interface, hid_proto_boot); usb_hid_set_idle(dev, interface, 0); diff --git a/payloads/libpayload/drivers/usb/usbhub.c b/payloads/libpayload/drivers/usb/usbhub.c index 4625246e22..0a5d0ebcb5 100644 --- a/payloads/libpayload/drivers/usb/usbhub.c +++ b/payloads/libpayload/drivers/usb/usbhub.c @@ -128,6 +128,9 @@ usb_hub_init (usbdev_t *dev) dev->data = malloc (sizeof (usbhub_inst_t)); + if (!dev->data) + usb_fatal("Not enough memory for USB hub.\n"); + HUB_INST (dev)->descriptor = (hub_descriptor_t *) get_descriptor (dev, gen_bmRequestType @@ -137,6 +140,9 @@ usb_hub_init (usbdev_t *dev) HUB_INST (dev)->num_ports = HUB_INST (dev)->descriptor->bNbrPorts; HUB_INST (dev)->ports = malloc (sizeof (int) * (HUB_INST (dev)->num_ports + 1)); + if (! HUB_INST (dev)->ports) + usb_fatal("Not enough memory for USB hub ports.\n"); + for (i = 1; i <= HUB_INST (dev)->num_ports; i++) HUB_INST (dev)->ports[i] = -1; for (i = 1; i <= HUB_INST (dev)->num_ports; i++) diff --git a/payloads/libpayload/drivers/usb/usbmsc.c b/payloads/libpayload/drivers/usb/usbmsc.c index ad4a10c146..f24bd6d857 100644 --- a/payloads/libpayload/drivers/usb/usbmsc.c +++ b/payloads/libpayload/drivers/usb/usbmsc.c @@ -346,6 +346,9 @@ usb_msc_init (usbdev_t *dev) } dev->data = malloc (sizeof (usbmsc_inst_t)); + if (!dev->data) + usb_fatal("Not enough memory for USB MSC device.\n"); + MSC_INST (dev)->bulk_in = 0; MSC_INST (dev)->bulk_out = 0; diff --git a/payloads/libpayload/include/usb/usb.h b/payloads/libpayload/include/usb/usb.h index d06e8077db..9f38b845dd 100644 --- a/payloads/libpayload/include/usb/usb.h +++ b/payloads/libpayload/include/usb/usb.h @@ -226,4 +226,6 @@ gen_bmRequestType (dev_req_dir dir, dev_req_type type, dev_req_recp recp) void usb_detach_device(hci_t *controller, int devno); int usb_attach_device(hci_t *controller, int hubaddress, int port, int lowspeed); + +void usb_fatal(const char *message) __attribute__ ((noreturn)); #endif diff --git a/payloads/libpayload/libc/lar.c b/payloads/libpayload/libc/lar.c index 225b19001a..9ee09e2ec6 100644 --- a/payloads/libpayload/libc/lar.c +++ b/payloads/libpayload/libc/lar.c @@ -113,6 +113,10 @@ struct LAR *openlar(void *addr) * tear on the heap */ lar->headers = malloc(16 * sizeof(void *)); + + if (!lar->headers) + return NULL; + lar->alloc = 16; lar->count = lar->eof = 0; lar->cindex = 0; diff --git a/payloads/libpayload/libc/malloc.c b/payloads/libpayload/libc/malloc.c index d18b289adf..4cb71f6ff4 100644 --- a/payloads/libpayload/libc/malloc.c +++ b/payloads/libpayload/libc/malloc.c @@ -309,6 +309,8 @@ void *memalign(size_t align, size_t size) if (size == 0) return 0; if (align_regions == 0) { align_regions = malloc(sizeof(struct align_region_t)); + if (align_regions == NULL) + return NULL; memset(align_regions, 0, sizeof(struct align_region_t)); } struct align_region_t *reg = align_regions; diff --git a/payloads/libpayload/libc/readline.c b/payloads/libpayload/libc/readline.c index 01a565a698..9387e09149 100644 --- a/payloads/libpayload/libc/readline.c +++ b/payloads/libpayload/libc/readline.c @@ -55,6 +55,8 @@ char *readline(const char *prompt) if (!readline_buffer || !readline_bufferlen) { #define READLINE_BUFFERSIZE 256 readline_buffer = malloc(READLINE_BUFFERSIZE); + if (!readline_buffer) + return NULL; readline_bufferlen = READLINE_BUFFERSIZE; memset(readline_buffer, 0, readline_bufferlen); } -- cgit v1.2.3