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Diffstat (limited to 'drivers/char/tpm/eventlog/efi.c')
| -rw-r--r-- | drivers/char/tpm/eventlog/efi.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/char/tpm/eventlog/efi.c b/drivers/char/tpm/eventlog/efi.c index 3e673ab22cb4..abd3beeb5158 100644 --- a/drivers/char/tpm/eventlog/efi.c +++ b/drivers/char/tpm/eventlog/efi.c @@ -43,6 +43,11 @@ int tpm_read_log_efi(struct tpm_chip *chip) log_size = log_tbl->size; memunmap(log_tbl); + if (!log_size) { + pr_warn("UEFI TPM log area empty\n"); + return -EIO; + } + log_tbl = memremap(efi.tpm_log, sizeof(*log_tbl) + log_size, MEMREMAP_WB); if (!log_tbl) { |