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ACPI fixes for v4.15-rc5

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- Fix an error handling issue in the ACPI APEI implementation
    of the >read callback in struct pstore_info (Takashi Iwai).
 
  - Fix a possible out-of-bounds arrar read in the ACPI CPPC
    driver (Colin Ian King).
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Merge tag 'acpi-4.15-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull ACPI fixes from Rafael Wysocki:
 "These fix a recently introduced issue in the ACPI CPPC driver and an
  obscure error hanling bug in the APEI code.

  Specifics:

   - Fix an error handling issue in the ACPI APEI implementation of the
     >read callback in struct pstore_info (Takashi Iwai).

   - Fix a possible out-of-bounds arrar read in the ACPI CPPC driver
     (Colin Ian King)"

* tag 'acpi-4.15-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  ACPI: APEI / ERST: Fix missing error handling in erst_reader()
  ACPI: CPPC: remove initial assignment of pcc_ss_data
This commit is contained in:
Linus Torvalds 2017-12-20 13:44:21 -08:00
commit 1362d628cb
2 changed files with 2 additions and 2 deletions
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2
drivers/acpi/apei/erst.c
View file

@ -1007,7 +1007,7 @@ static ssize_t erst_reader(struct pstore_record *record)
/* The record may be cleared by others, try read next record */
if (len == -ENOENT)
goto skip;
else if (len < sizeof(*rcd)) {
else if (len < 0 || len < sizeof(*rcd)) {
rc = -EIO;
goto out;
}

2
drivers/acpi/cppc_acpi.c
View file

@ -1171,7 +1171,7 @@ int cppc_set_perf(int cpu, struct cppc_perf_ctrls *perf_ctrls)
struct cpc_desc *cpc_desc = per_cpu(cpc_desc_ptr, cpu);
struct cpc_register_resource *desired_reg;
int pcc_ss_id = per_cpu(cpu_pcc_subspace_idx, cpu);
struct cppc_pcc_data *pcc_ss_data = pcc_data[pcc_ss_id];
struct cppc_pcc_data *pcc_ss_data;
int ret = 0;
if (!cpc_desc || pcc_ss_id < 0) {