Messages in this thread |  | | Subject | Re: [PATCH v3] acpi: apei: fix the wrongly iterate generic error status block | From | "Baicar, Tyler" <> | Date | Wed, 16 Aug 2017 07:55:37 -0600 |
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On 8/16/2017 2:14 AM, Dongjiu Geng wrote: > The revision 0x300 generic error data entry is different > from the old version, but currently iterating through the > GHES estatus blocks does not take into account this difference. > This will lead to failure to get the right data entry if GHES > has revision 0x300 error data entry. > > Update the GHES estatus iteration to properly increment using > acpi_hest_get_next, and correct the iteration termination condition > because the status block data length only includes error data length. > Clear the CPER estatus printing iteration logic to use same macro. > > Signed-off-by: Dongjiu Geng <gengdongjiu@huawei.com> > CC: Tyler Baicar <tbaicar@codeaurora.org> Tested-by: Tyler Baicar <tbaicar@codeaurora.org>
Works good for me!
Thanks, Tyler > --- > drivers/acpi/apei/apei-internal.h | 5 ----- > drivers/firmware/efi/cper.c | 12 ++---------- > include/acpi/ghes.h | 5 +++++ > 3 files changed, 7 insertions(+), 15 deletions(-) > > diff --git a/drivers/acpi/apei/apei-internal.h b/drivers/acpi/apei/apei-internal.h > index 6e9f14c0a71b..cb4126051f62 100644 > --- a/drivers/acpi/apei/apei-internal.h > +++ b/drivers/acpi/apei/apei-internal.h > @@ -120,11 +120,6 @@ int apei_exec_collect_resources(struct apei_exec_context *ctx, > struct dentry; > struct dentry *apei_get_debugfs_dir(void); > > -#define apei_estatus_for_each_section(estatus, section) \ > - for (section = (struct acpi_hest_generic_data *)(estatus + 1); \ > - (void *)section - (void *)estatus < estatus->data_length; \ > - section = (void *)(section+1) + section->error_data_length) > - > static inline u32 cper_estatus_len(struct acpi_hest_generic_status *estatus) > { > if (estatus->raw_data_length) > diff --git a/drivers/firmware/efi/cper.c b/drivers/firmware/efi/cper.c > index 48a8f69da42a..bf3672a81e49 100644 > --- a/drivers/firmware/efi/cper.c > +++ b/drivers/firmware/efi/cper.c > @@ -606,7 +606,6 @@ void cper_estatus_print(const char *pfx, > const struct acpi_hest_generic_status *estatus) > { > struct acpi_hest_generic_data *gdata; > - unsigned int data_len; > int sec_no = 0; > char newpfx[64]; > __u16 severity; > @@ -617,14 +616,10 @@ void cper_estatus_print(const char *pfx, > "It has been corrected by h/w " > "and requires no further action"); > printk("%s""event severity: %s\n", pfx, cper_severity_str(severity)); > - data_len = estatus->data_length; > - gdata = (struct acpi_hest_generic_data *)(estatus + 1); > snprintf(newpfx, sizeof(newpfx), "%s%s", pfx, INDENT_SP); > > - while (data_len >= acpi_hest_get_size(gdata)) { > + apei_estatus_for_each_section(estatus, gdata) { > cper_estatus_print_section(newpfx, gdata, sec_no); > - data_len -= acpi_hest_get_record_size(gdata); > - gdata = acpi_hest_get_next(gdata); > sec_no++; > } > } > @@ -653,15 +648,12 @@ int cper_estatus_check(const struct acpi_hest_generic_status *estatus) > if (rc) > return rc; > data_len = estatus->data_length; > - gdata = (struct acpi_hest_generic_data *)(estatus + 1); > > - while (data_len >= acpi_hest_get_size(gdata)) { > + apei_estatus_for_each_section(estatus, gdata) { > gedata_len = acpi_hest_get_error_length(gdata); > if (gedata_len > data_len - acpi_hest_get_size(gdata)) > return -EINVAL; > - > data_len -= acpi_hest_get_record_size(gdata); > - gdata = acpi_hest_get_next(gdata); > } > if (data_len) > return -EINVAL; > diff --git a/include/acpi/ghes.h b/include/acpi/ghes.h > index 9f26e01186ae..9061c5c743b3 100644 > --- a/include/acpi/ghes.h > +++ b/include/acpi/ghes.h > @@ -113,6 +113,11 @@ static inline void *acpi_hest_get_next(struct acpi_hest_generic_data *gdata) > return (void *)(gdata) + acpi_hest_get_record_size(gdata); > } > > +#define apei_estatus_for_each_section(estatus, section) \ > + for (section = (struct acpi_hest_generic_data *)(estatus + 1); \ > + (void *)section - (void *)(estatus + 1) < estatus->data_length; \ > + section = acpi_hest_get_next(section)) > + > int ghes_notify_sea(void); > > #endif /* GHES_H */
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