Merge tag 'for-v3.8' of git://git.infradead.org/users/cbou/linux-pstore
Pull pstore update from Anton Vorontsov:
"Here are just a few fixups for the pstore subsystem, nothing special
this time"
* tag 'for-v3.8' of git://git.infradead.org/users/cbou/linux-pstore:
pstore/ftrace: Adjust for ftrace_ops->func prototype change
pstore/ram: Fix bounds checks for mem_size, record_size, console_size and ftrace_size
pstore/ram: Fix undefined usage of rounddown_pow_of_two(0)
pstore/ram: Fixup section annotations
diff --git a/fs/pstore/ftrace.c b/fs/pstore/ftrace.c
index 2d57e1a..43b1280 100644
--- a/fs/pstore/ftrace.c
+++ b/fs/pstore/ftrace.c
@@ -28,7 +28,9 @@
#include "internal.h"
static void notrace pstore_ftrace_call(unsigned long ip,
- unsigned long parent_ip)
+ unsigned long parent_ip,
+ struct ftrace_ops *op,
+ struct pt_regs *regs)
{
unsigned long flags;
struct pstore_ftrace_record rec = {};
diff --git a/fs/pstore/ram.c b/fs/pstore/ram.c
index 2bfa36e..f883e7e 100644
--- a/fs/pstore/ram.c
+++ b/fs/pstore/ram.c
@@ -188,7 +188,7 @@
struct pstore_info *psi)
{
struct ramoops_context *cxt = psi->data;
- struct persistent_ram_zone *prz = cxt->przs[cxt->dump_write_cnt];
+ struct persistent_ram_zone *prz;
size_t hlen;
if (type == PSTORE_TYPE_CONSOLE) {
@@ -225,6 +225,11 @@
if (part != 1)
return -ENOSPC;
+ if (!cxt->przs)
+ return -ENOSPC;
+
+ prz = cxt->przs[cxt->dump_write_cnt];
+
hlen = ramoops_write_kmsg_hdr(prz);
if (size + hlen > prz->buffer_size)
size = prz->buffer_size - hlen;
@@ -286,8 +291,9 @@
kfree(cxt->przs);
}
-static int ramoops_init_przs(struct device *dev, struct ramoops_context *cxt,
- phys_addr_t *paddr, size_t dump_mem_sz)
+static int __devinit ramoops_init_przs(struct device *dev,
+ struct ramoops_context *cxt,
+ phys_addr_t *paddr, size_t dump_mem_sz)
{
int err = -ENOMEM;
int i;
@@ -295,6 +301,11 @@
if (!cxt->record_size)
return 0;
+ if (*paddr + dump_mem_sz - cxt->phys_addr > cxt->size) {
+ dev_err(dev, "no room for dumps\n");
+ return -ENOMEM;
+ }
+
cxt->max_dump_cnt = dump_mem_sz / cxt->record_size;
if (!cxt->max_dump_cnt)
return -ENOMEM;
@@ -325,15 +336,20 @@
return err;
}
-static int ramoops_init_prz(struct device *dev, struct ramoops_context *cxt,
- struct persistent_ram_zone **prz,
- phys_addr_t *paddr, size_t sz, u32 sig)
+static int __devinit ramoops_init_prz(struct device *dev,
+ struct ramoops_context *cxt,
+ struct persistent_ram_zone **prz,
+ phys_addr_t *paddr, size_t sz, u32 sig)
{
if (!sz)
return 0;
- if (*paddr + sz > *paddr + cxt->size)
+ if (*paddr + sz - cxt->phys_addr > cxt->size) {
+ dev_err(dev, "no room for mem region (0x%zx@0x%llx) in (0x%lx@0x%llx)\n",
+ sz, (unsigned long long)*paddr,
+ cxt->size, (unsigned long long)cxt->phys_addr);
return -ENOMEM;
+ }
*prz = persistent_ram_new(*paddr, sz, sig, cxt->ecc_size);
if (IS_ERR(*prz)) {
@@ -373,10 +389,14 @@
goto fail_out;
}
- pdata->mem_size = rounddown_pow_of_two(pdata->mem_size);
- pdata->record_size = rounddown_pow_of_two(pdata->record_size);
- pdata->console_size = rounddown_pow_of_two(pdata->console_size);
- pdata->ftrace_size = rounddown_pow_of_two(pdata->ftrace_size);
+ if (!is_power_of_2(pdata->mem_size))
+ pdata->mem_size = rounddown_pow_of_two(pdata->mem_size);
+ if (!is_power_of_2(pdata->record_size))
+ pdata->record_size = rounddown_pow_of_two(pdata->record_size);
+ if (!is_power_of_2(pdata->console_size))
+ pdata->console_size = rounddown_pow_of_two(pdata->console_size);
+ if (!is_power_of_2(pdata->ftrace_size))
+ pdata->ftrace_size = rounddown_pow_of_two(pdata->ftrace_size);
cxt->dump_read_cnt = 0;
cxt->size = pdata->mem_size;
