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Fixes for pstore/ram

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- Fix console ramoops to show the previous boot logs (Sai Prakash Ranjan)
 - Avoid allocation and leak of platform data
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 Comment: Kees Cook <kees@outflux.net>
 
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Merge tag 'pstore-v5.0-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux

Pull pstore fixes from Kees Cook:

 - Fix console ramoops to show the previous boot logs (Sai Prakash
   Ranjan)

 - Avoid allocation and leak of platform data

* tag 'pstore-v5.0-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux:
  pstore/ram: Avoid allocation and leak of platform data
  pstore/ram: Fix console ramoops to show the previous boot logs
This commit is contained in:
Linus Torvalds 2019-01-21 13:12:03 +13:00
commit 1e556ba3b6
1 changed files with 4 additions and 8 deletions
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12
fs/pstore/ram.c
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@ -128,7 +128,6 @@ ramoops_get_next_prz(struct persistent_ram_zone *przs[], int id,
struct pstore_record *record)
{
struct persistent_ram_zone *prz;
bool update = (record->type == PSTORE_TYPE_DMESG);
/* Give up if we never existed or have hit the end. */
if (!przs)
@ -139,7 +138,7 @@ ramoops_get_next_prz(struct persistent_ram_zone *przs[], int id,
return NULL;
/* Update old/shadowed buffer. */
if (update)
if (prz->type == PSTORE_TYPE_DMESG)
persistent_ram_save_old(prz);
if (!persistent_ram_old_size(prz))
@ -711,18 +710,15 @@ static int ramoops_probe(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
struct ramoops_platform_data *pdata = dev->platform_data;
struct ramoops_platform_data pdata_local;
struct ramoops_context *cxt = &oops_cxt;
size_t dump_mem_sz;
phys_addr_t paddr;
int err = -EINVAL;
if (dev_of_node(dev) && !pdata) {
pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL);
if (!pdata) {
pr_err("cannot allocate platform data buffer\n");
err = -ENOMEM;
goto fail_out;
}
pdata = &pdata_local;
memset(pdata, 0, sizeof(*pdata));
err = ramoops_parse_dt(pdev, pdata);
if (err < 0)