| Message ID | 162037273007.1195827.10907249070709169329.stgit@dwillia2-desk3.amr.corp.intel.com |
|---|---|
| State | Accepted |
| Commit | e9cfd259c6d386f6235395a13bd4f357a979b2d0 |
| Headers | show |
| Series | ACPI: NFIT: Fix support for variable 'SPA' structure size | expand |
Hi Dan, On Fri, May 7, 2021 at 9:33 AM Dan Williams <dan.j.williams@intel.com> wrote: > > ACPI 6.4 introduced the "SpaLocationCookie" to the NFIT "System Physical > Address (SPA) Range Structure". The presence of that new field is > indicated by the ACPI_NFIT_LOCATION_COOKIE_VALID flag. Pre-ACPI-6.4 > firmware implementations omit the flag and maintain the original size of > the structure. > > Update the implementation to check that flag to determine the size > rather than the ACPI 6.4 compliant definition of 'struct > acpi_nfit_system_address' from the Linux ACPICA definitions. > > Update the test infrastructure for the new expectations as well, i.e. > continue to emulate the ACPI 6.3 definition of that structure. > > Without this fix the kernel fails to validate 'SPA' structures and this > leads to a crash in nfit_get_smbios_id() since that routine assumes that > SPAs are valid if it finds valid SMBIOS tables. > > BUG: unable to handle page fault for address: ffffffffffffffa8 > [..] > Call Trace: > skx_get_nvdimm_info+0x56/0x130 [skx_edac] > skx_get_dimm_config+0x1f5/0x213 [skx_edac] > skx_register_mci+0x132/0x1c0 [skx_edac] > > Cc: Bob Moore <robert.moore@intel.com> > Cc: Erik Kaneda <erik.kaneda@intel.com> > Fixes: cf16b05c607b ("ACPICA: ACPI 6.4: NFIT: add Location Cookie field") Do you want me to apply this (as the commit being fixed went in through the ACPI tree)? If you'd rather take care of it yourself: Reviewed-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> > Reported-by: Yi Zhang <yi.zhang@redhat.com> > Tested-by: Yi Zhang <yi.zhang@redhat.com> > Signed-off-by: Dan Williams <dan.j.williams@intel.com> > --- > > Rafael, I can take this through nvdimm.git after -rc1, but if you are > sending any fixes to Linus based on your merge baseline between now and > Monday, please pick up this one. > > drivers/acpi/nfit/core.c | 15 ++++++++++---- > tools/testing/nvdimm/test/nfit.c | 42 +++++++++++++++++++++++--------------- > 2 files changed, 36 insertions(+), 21 deletions(-) > > diff --git a/drivers/acpi/nfit/core.c b/drivers/acpi/nfit/core.c > index 958aaac869e8..23d9a09d7060 100644 > --- a/drivers/acpi/nfit/core.c > +++ b/drivers/acpi/nfit/core.c > @@ -686,6 +686,13 @@ int nfit_spa_type(struct acpi_nfit_system_address *spa) > return -1; > } > > +static size_t sizeof_spa(struct acpi_nfit_system_address *spa) > +{ > + if (spa->flags & ACPI_NFIT_LOCATION_COOKIE_VALID) > + return sizeof(*spa); > + return sizeof(*spa) - 8; > +} > + > static bool add_spa(struct acpi_nfit_desc *acpi_desc, > struct nfit_table_prev *prev, > struct acpi_nfit_system_address *spa) > @@ -693,22 +700,22 @@ static bool add_spa(struct acpi_nfit_desc *acpi_desc, > struct device *dev = acpi_desc->dev; > struct nfit_spa *nfit_spa; > > - if (spa->header.length != sizeof(*spa)) > + if (spa->header.length != sizeof_spa(spa)) > return false; > > list_for_each_entry(nfit_spa, &prev->spas, list) { > - if (memcmp(nfit_spa->spa, spa, sizeof(*spa)) == 0) { > + if (memcmp(nfit_spa->spa, spa, sizeof_spa(spa)) == 0) { > list_move_tail(&nfit_spa->list, &acpi_desc->spas); > return true; > } > } > > - nfit_spa = devm_kzalloc(dev, sizeof(*nfit_spa) + sizeof(*spa), > + nfit_spa = devm_kzalloc(dev, sizeof(*nfit_spa) + sizeof_spa(spa), > GFP_KERNEL); > if (!nfit_spa) > return false; > INIT_LIST_HEAD(&nfit_spa->list); > - memcpy(nfit_spa->spa, spa, sizeof(*spa)); > + memcpy(nfit_spa->spa, spa, sizeof_spa(spa)); > list_add_tail(&nfit_spa->list, &acpi_desc->spas); > dev_dbg(dev, "spa index: %d type: %s\n", > spa->range_index, > diff --git a/tools/testing/nvdimm/test/nfit.c b/tools/testing/nvdimm/test/nfit.c > index 9b185bf82da8..54f367cbadae 100644 > --- a/tools/testing/nvdimm/test/nfit.c > +++ b/tools/testing/nvdimm/test/nfit.c > @@ -1871,9 +1871,16 @@ static void smart_init(struct nfit_test *t) > } > } > > +static size_t sizeof_spa(struct acpi_nfit_system_address *spa) > +{ > + /* until spa location cookie support is added... */ > + return sizeof(*spa) - 8; > +} > + > static int nfit_test0_alloc(struct nfit_test *t) > { > - size_t nfit_size = sizeof(struct acpi_nfit_system_address) * NUM_SPA > + struct acpi_nfit_system_address *spa = NULL; > + size_t nfit_size = sizeof_spa(spa) * NUM_SPA > + sizeof(struct acpi_nfit_memory_map) * NUM_MEM > + sizeof(struct acpi_nfit_control_region) * NUM_DCR > + offsetof(struct acpi_nfit_control_region, > @@ -1937,7 +1944,8 @@ static int nfit_test0_alloc(struct nfit_test *t) > > static int nfit_test1_alloc(struct nfit_test *t) > { > - size_t nfit_size = sizeof(struct acpi_nfit_system_address) * 2 > + struct acpi_nfit_system_address *spa = NULL; > + size_t nfit_size = sizeof_spa(spa) * 2 > + sizeof(struct acpi_nfit_memory_map) * 2 > + offsetof(struct acpi_nfit_control_region, window_size) * 2; > int i; > @@ -2000,7 +2008,7 @@ static void nfit_test0_setup(struct nfit_test *t) > */ > spa = nfit_buf; > spa->header.type = ACPI_NFIT_TYPE_SYSTEM_ADDRESS; > - spa->header.length = sizeof(*spa); > + spa->header.length = sizeof_spa(spa); > memcpy(spa->range_guid, to_nfit_uuid(NFIT_SPA_PM), 16); > spa->range_index = 0+1; > spa->address = t->spa_set_dma[0]; > @@ -2014,7 +2022,7 @@ static void nfit_test0_setup(struct nfit_test *t) > */ > spa = nfit_buf + offset; > spa->header.type = ACPI_NFIT_TYPE_SYSTEM_ADDRESS; > - spa->header.length = sizeof(*spa); > + spa->header.length = sizeof_spa(spa); > memcpy(spa->range_guid, to_nfit_uuid(NFIT_SPA_PM), 16); > spa->range_index = 1+1; > spa->address = t->spa_set_dma[1]; > @@ -2024,7 +2032,7 @@ static void nfit_test0_setup(struct nfit_test *t) > /* spa2 (dcr0) dimm0 */ > spa = nfit_buf + offset; > spa->header.type = ACPI_NFIT_TYPE_SYSTEM_ADDRESS; > - spa->header.length = sizeof(*spa); > + spa->header.length = sizeof_spa(spa); > memcpy(spa->range_guid, to_nfit_uuid(NFIT_SPA_DCR), 16); > spa->range_index = 2+1; > spa->address = t->dcr_dma[0]; > @@ -2034,7 +2042,7 @@ static void nfit_test0_setup(struct nfit_test *t) > /* spa3 (dcr1) dimm1 */ > spa = nfit_buf + offset; > spa->header.type = ACPI_NFIT_TYPE_SYSTEM_ADDRESS; > - spa->header.length = sizeof(*spa); > + spa->header.length = sizeof_spa(spa); > memcpy(spa->range_guid, to_nfit_uuid(NFIT_SPA_DCR), 16); > spa->range_index = 3+1; > spa->address = t->dcr_dma[1]; > @@ -2044,7 +2052,7 @@ static void nfit_test0_setup(struct nfit_test *t) > /* spa4 (dcr2) dimm2 */ > spa = nfit_buf + offset; > spa->header.type = ACPI_NFIT_TYPE_SYSTEM_ADDRESS; > - spa->header.length = sizeof(*spa); > + spa->header.length = sizeof_spa(spa); > memcpy(spa->range_guid, to_nfit_uuid(NFIT_SPA_DCR), 16); > spa->range_index = 4+1; > spa->address = t->dcr_dma[2]; > @@ -2054,7 +2062,7 @@ static void nfit_test0_setup(struct nfit_test *t) > /* spa5 (dcr3) dimm3 */ > spa = nfit_buf + offset; > spa->header.type = ACPI_NFIT_TYPE_SYSTEM_ADDRESS; > - spa->header.length = sizeof(*spa); > + spa->header.length = sizeof_spa(spa); > memcpy(spa->range_guid, to_nfit_uuid(NFIT_SPA_DCR), 16); > spa->range_index = 5+1; > spa->address = t->dcr_dma[3]; > @@ -2064,7 +2072,7 @@ static void nfit_test0_setup(struct nfit_test *t) > /* spa6 (bdw for dcr0) dimm0 */ > spa = nfit_buf + offset; > spa->header.type = ACPI_NFIT_TYPE_SYSTEM_ADDRESS; > - spa->header.length = sizeof(*spa); > + spa->header.length = sizeof_spa(spa); > memcpy(spa->range_guid, to_nfit_uuid(NFIT_SPA_BDW), 16); > spa->range_index = 6+1; > spa->address = t->dimm_dma[0]; > @@ -2074,7 +2082,7 @@ static void nfit_test0_setup(struct nfit_test *t) > /* spa7 (bdw for dcr1) dimm1 */ > spa = nfit_buf + offset; > spa->header.type = ACPI_NFIT_TYPE_SYSTEM_ADDRESS; > - spa->header.length = sizeof(*spa); > + spa->header.length = sizeof_spa(spa); > memcpy(spa->range_guid, to_nfit_uuid(NFIT_SPA_BDW), 16); > spa->range_index = 7+1; > spa->address = t->dimm_dma[1]; > @@ -2084,7 +2092,7 @@ static void nfit_test0_setup(struct nfit_test *t) > /* spa8 (bdw for dcr2) dimm2 */ > spa = nfit_buf + offset; > spa->header.type = ACPI_NFIT_TYPE_SYSTEM_ADDRESS; > - spa->header.length = sizeof(*spa); > + spa->header.length = sizeof_spa(spa); > memcpy(spa->range_guid, to_nfit_uuid(NFIT_SPA_BDW), 16); > spa->range_index = 8+1; > spa->address = t->dimm_dma[2]; > @@ -2094,7 +2102,7 @@ static void nfit_test0_setup(struct nfit_test *t) > /* spa9 (bdw for dcr3) dimm3 */ > spa = nfit_buf + offset; > spa->header.type = ACPI_NFIT_TYPE_SYSTEM_ADDRESS; > - spa->header.length = sizeof(*spa); > + spa->header.length = sizeof_spa(spa); > memcpy(spa->range_guid, to_nfit_uuid(NFIT_SPA_BDW), 16); > spa->range_index = 9+1; > spa->address = t->dimm_dma[3]; > @@ -2581,7 +2589,7 @@ static void nfit_test0_setup(struct nfit_test *t) > /* spa10 (dcr4) dimm4 */ > spa = nfit_buf + offset; > spa->header.type = ACPI_NFIT_TYPE_SYSTEM_ADDRESS; > - spa->header.length = sizeof(*spa); > + spa->header.length = sizeof_spa(spa); > memcpy(spa->range_guid, to_nfit_uuid(NFIT_SPA_DCR), 16); > spa->range_index = 10+1; > spa->address = t->dcr_dma[4]; > @@ -2595,7 +2603,7 @@ static void nfit_test0_setup(struct nfit_test *t) > */ > spa = nfit_buf + offset; > spa->header.type = ACPI_NFIT_TYPE_SYSTEM_ADDRESS; > - spa->header.length = sizeof(*spa); > + spa->header.length = sizeof_spa(spa); > memcpy(spa->range_guid, to_nfit_uuid(NFIT_SPA_PM), 16); > spa->range_index = 11+1; > spa->address = t->spa_set_dma[2]; > @@ -2605,7 +2613,7 @@ static void nfit_test0_setup(struct nfit_test *t) > /* spa12 (bdw for dcr4) dimm4 */ > spa = nfit_buf + offset; > spa->header.type = ACPI_NFIT_TYPE_SYSTEM_ADDRESS; > - spa->header.length = sizeof(*spa); > + spa->header.length = sizeof_spa(spa); > memcpy(spa->range_guid, to_nfit_uuid(NFIT_SPA_BDW), 16); > spa->range_index = 12+1; > spa->address = t->dimm_dma[4]; > @@ -2739,7 +2747,7 @@ static void nfit_test1_setup(struct nfit_test *t) > /* spa0 (flat range with no bdw aliasing) */ > spa = nfit_buf + offset; > spa->header.type = ACPI_NFIT_TYPE_SYSTEM_ADDRESS; > - spa->header.length = sizeof(*spa); > + spa->header.length = sizeof_spa(spa); > memcpy(spa->range_guid, to_nfit_uuid(NFIT_SPA_PM), 16); > spa->range_index = 0+1; > spa->address = t->spa_set_dma[0]; > @@ -2749,7 +2757,7 @@ static void nfit_test1_setup(struct nfit_test *t) > /* virtual cd region */ > spa = nfit_buf + offset; > spa->header.type = ACPI_NFIT_TYPE_SYSTEM_ADDRESS; > - spa->header.length = sizeof(*spa); > + spa->header.length = sizeof_spa(spa); > memcpy(spa->range_guid, to_nfit_uuid(NFIT_SPA_VCD), 16); > spa->range_index = 0; > spa->address = t->spa_set_dma[1]; >
On Fri, May 7, 2021 at 2:47 AM Rafael J. Wysocki <rafael@kernel.org> wrote: > > Hi Dan, > > On Fri, May 7, 2021 at 9:33 AM Dan Williams <dan.j.williams@intel.com> wrote: > > > > ACPI 6.4 introduced the "SpaLocationCookie" to the NFIT "System Physical > > Address (SPA) Range Structure". The presence of that new field is > > indicated by the ACPI_NFIT_LOCATION_COOKIE_VALID flag. Pre-ACPI-6.4 > > firmware implementations omit the flag and maintain the original size of > > the structure. > > > > Update the implementation to check that flag to determine the size > > rather than the ACPI 6.4 compliant definition of 'struct > > acpi_nfit_system_address' from the Linux ACPICA definitions. > > > > Update the test infrastructure for the new expectations as well, i.e. > > continue to emulate the ACPI 6.3 definition of that structure. > > > > Without this fix the kernel fails to validate 'SPA' structures and this > > leads to a crash in nfit_get_smbios_id() since that routine assumes that > > SPAs are valid if it finds valid SMBIOS tables. > > > > BUG: unable to handle page fault for address: ffffffffffffffa8 > > [..] > > Call Trace: > > skx_get_nvdimm_info+0x56/0x130 [skx_edac] > > skx_get_dimm_config+0x1f5/0x213 [skx_edac] > > skx_register_mci+0x132/0x1c0 [skx_edac] > > > > Cc: Bob Moore <robert.moore@intel.com> > > Cc: Erik Kaneda <erik.kaneda@intel.com> > > Fixes: cf16b05c607b ("ACPICA: ACPI 6.4: NFIT: add Location Cookie field") > > Do you want me to apply this (as the commit being fixed went in > through the ACPI tree)? Yes, I would need to wait for a signed tag so if you're sending urgent fixes in the next few days please take this one, otherwise I'll circle back next week after -rc1. > > If you'd rather take care of it yourself: > > Reviewed-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Thanks!
diff --git a/drivers/acpi/nfit/core.c b/drivers/acpi/nfit/core.c index 958aaac869e8..23d9a09d7060 100644 --- a/drivers/acpi/nfit/core.c +++ b/drivers/acpi/nfit/core.c @@ -686,6 +686,13 @@ int nfit_spa_type(struct acpi_nfit_system_address *spa) return -1; } +static size_t sizeof_spa(struct acpi_nfit_system_address *spa) +{ + if (spa->flags & ACPI_NFIT_LOCATION_COOKIE_VALID) + return sizeof(*spa); + return sizeof(*spa) - 8; +} + static bool add_spa(struct acpi_nfit_desc *acpi_desc, struct nfit_table_prev *prev, struct acpi_nfit_system_address *spa) @@ -693,22 +700,22 @@ static bool add_spa(struct acpi_nfit_desc *acpi_desc, struct device *dev = acpi_desc->dev; struct nfit_spa *nfit_spa; - if (spa->header.length != sizeof(*spa)) + if (spa->header.length != sizeof_spa(spa)) return false; list_for_each_entry(nfit_spa, &prev->spas, list) { - if (memcmp(nfit_spa->spa, spa, sizeof(*spa)) == 0) { + if (memcmp(nfit_spa->spa, spa, sizeof_spa(spa)) == 0) { list_move_tail(&nfit_spa->list, &acpi_desc->spas); return true; } } - nfit_spa = devm_kzalloc(dev, sizeof(*nfit_spa) + sizeof(*spa), + nfit_spa = devm_kzalloc(dev, sizeof(*nfit_spa) + sizeof_spa(spa), GFP_KERNEL); if (!nfit_spa) return false; INIT_LIST_HEAD(&nfit_spa->list); - memcpy(nfit_spa->spa, spa, sizeof(*spa)); + memcpy(nfit_spa->spa, spa, sizeof_spa(spa)); list_add_tail(&nfit_spa->list, &acpi_desc->spas); dev_dbg(dev, "spa index: %d type: %s\n", spa->range_index, diff --git a/tools/testing/nvdimm/test/nfit.c b/tools/testing/nvdimm/test/nfit.c index 9b185bf82da8..54f367cbadae 100644 --- a/tools/testing/nvdimm/test/nfit.c +++ b/tools/testing/nvdimm/test/nfit.c @@ -1871,9 +1871,16 @@ static void smart_init(struct nfit_test *t) } } +static size_t sizeof_spa(struct acpi_nfit_system_address *spa) +{ + /* until spa location cookie support is added... */ + return sizeof(*spa) - 8; +} + static int nfit_test0_alloc(struct nfit_test *t) { - size_t nfit_size = sizeof(struct acpi_nfit_system_address) * NUM_SPA + struct acpi_nfit_system_address *spa = NULL; + size_t nfit_size = sizeof_spa(spa) * NUM_SPA + sizeof(struct acpi_nfit_memory_map) * NUM_MEM + sizeof(struct acpi_nfit_control_region) * NUM_DCR + offsetof(struct acpi_nfit_control_region, @@ -1937,7 +1944,8 @@ static int nfit_test0_alloc(struct nfit_test *t) static int nfit_test1_alloc(struct nfit_test *t) { - size_t nfit_size = sizeof(struct acpi_nfit_system_address) * 2 + struct acpi_nfit_system_address *spa = NULL; + size_t nfit_size = sizeof_spa(spa) * 2 + sizeof(struct acpi_nfit_memory_map) * 2 + offsetof(struct acpi_nfit_control_region, window_size) * 2; int i; @@ -2000,7 +2008,7 @@ static void nfit_test0_setup(struct nfit_test *t) */ spa = nfit_buf; spa->header.type = ACPI_NFIT_TYPE_SYSTEM_ADDRESS; - spa->header.length = sizeof(*spa); + spa->header.length = sizeof_spa(spa); memcpy(spa->range_guid, to_nfit_uuid(NFIT_SPA_PM), 16); spa->range_index = 0+1; spa->address = t->spa_set_dma[0]; @@ -2014,7 +2022,7 @@ static void nfit_test0_setup(struct nfit_test *t) */ spa = nfit_buf + offset; spa->header.type = ACPI_NFIT_TYPE_SYSTEM_ADDRESS; - spa->header.length = sizeof(*spa); + spa->header.length = sizeof_spa(spa); memcpy(spa->range_guid, to_nfit_uuid(NFIT_SPA_PM), 16); spa->range_index = 1+1; spa->address = t->spa_set_dma[1]; @@ -2024,7 +2032,7 @@ static void nfit_test0_setup(struct nfit_test *t) /* spa2 (dcr0) dimm0 */ spa = nfit_buf + offset; spa->header.type = ACPI_NFIT_TYPE_SYSTEM_ADDRESS; - spa->header.length = sizeof(*spa); + spa->header.length = sizeof_spa(spa); memcpy(spa->range_guid, to_nfit_uuid(NFIT_SPA_DCR), 16); spa->range_index = 2+1; spa->address = t->dcr_dma[0]; @@ -2034,7 +2042,7 @@ static void nfit_test0_setup(struct nfit_test *t) /* spa3 (dcr1) dimm1 */ spa = nfit_buf + offset; spa->header.type = ACPI_NFIT_TYPE_SYSTEM_ADDRESS; - spa->header.length = sizeof(*spa); + spa->header.length = sizeof_spa(spa); memcpy(spa->range_guid, to_nfit_uuid(NFIT_SPA_DCR), 16); spa->range_index = 3+1; spa->address = t->dcr_dma[1]; @@ -2044,7 +2052,7 @@ static void nfit_test0_setup(struct nfit_test *t) /* spa4 (dcr2) dimm2 */ spa = nfit_buf + offset; spa->header.type = ACPI_NFIT_TYPE_SYSTEM_ADDRESS; - spa->header.length = sizeof(*spa); + spa->header.length = sizeof_spa(spa); memcpy(spa->range_guid, to_nfit_uuid(NFIT_SPA_DCR), 16); spa->range_index = 4+1; spa->address = t->dcr_dma[2]; @@ -2054,7 +2062,7 @@ static void nfit_test0_setup(struct nfit_test *t) /* spa5 (dcr3) dimm3 */ spa = nfit_buf + offset; spa->header.type = ACPI_NFIT_TYPE_SYSTEM_ADDRESS; - spa->header.length = sizeof(*spa); + spa->header.length = sizeof_spa(spa); memcpy(spa->range_guid, to_nfit_uuid(NFIT_SPA_DCR), 16); spa->range_index = 5+1; spa->address = t->dcr_dma[3]; @@ -2064,7 +2072,7 @@ static void nfit_test0_setup(struct nfit_test *t) /* spa6 (bdw for dcr0) dimm0 */ spa = nfit_buf + offset; spa->header.type = ACPI_NFIT_TYPE_SYSTEM_ADDRESS; - spa->header.length = sizeof(*spa); + spa->header.length = sizeof_spa(spa); memcpy(spa->range_guid, to_nfit_uuid(NFIT_SPA_BDW), 16); spa->range_index = 6+1; spa->address = t->dimm_dma[0]; @@ -2074,7 +2082,7 @@ static void nfit_test0_setup(struct nfit_test *t) /* spa7 (bdw for dcr1) dimm1 */ spa = nfit_buf + offset; spa->header.type = ACPI_NFIT_TYPE_SYSTEM_ADDRESS; - spa->header.length = sizeof(*spa); + spa->header.length = sizeof_spa(spa); memcpy(spa->range_guid, to_nfit_uuid(NFIT_SPA_BDW), 16); spa->range_index = 7+1; spa->address = t->dimm_dma[1]; @@ -2084,7 +2092,7 @@ static void nfit_test0_setup(struct nfit_test *t) /* spa8 (bdw for dcr2) dimm2 */ spa = nfit_buf + offset; spa->header.type = ACPI_NFIT_TYPE_SYSTEM_ADDRESS; - spa->header.length = sizeof(*spa); + spa->header.length = sizeof_spa(spa); memcpy(spa->range_guid, to_nfit_uuid(NFIT_SPA_BDW), 16); spa->range_index = 8+1; spa->address = t->dimm_dma[2]; @@ -2094,7 +2102,7 @@ static void nfit_test0_setup(struct nfit_test *t) /* spa9 (bdw for dcr3) dimm3 */ spa = nfit_buf + offset; spa->header.type = ACPI_NFIT_TYPE_SYSTEM_ADDRESS; - spa->header.length = sizeof(*spa); + spa->header.length = sizeof_spa(spa); memcpy(spa->range_guid, to_nfit_uuid(NFIT_SPA_BDW), 16); spa->range_index = 9+1; spa->address = t->dimm_dma[3]; @@ -2581,7 +2589,7 @@ static void nfit_test0_setup(struct nfit_test *t) /* spa10 (dcr4) dimm4 */ spa = nfit_buf + offset; spa->header.type = ACPI_NFIT_TYPE_SYSTEM_ADDRESS; - spa->header.length = sizeof(*spa); + spa->header.length = sizeof_spa(spa); memcpy(spa->range_guid, to_nfit_uuid(NFIT_SPA_DCR), 16); spa->range_index = 10+1; spa->address = t->dcr_dma[4]; @@ -2595,7 +2603,7 @@ static void nfit_test0_setup(struct nfit_test *t) */ spa = nfit_buf + offset; spa->header.type = ACPI_NFIT_TYPE_SYSTEM_ADDRESS; - spa->header.length = sizeof(*spa); + spa->header.length = sizeof_spa(spa); memcpy(spa->range_guid, to_nfit_uuid(NFIT_SPA_PM), 16); spa->range_index = 11+1; spa->address = t->spa_set_dma[2]; @@ -2605,7 +2613,7 @@ static void nfit_test0_setup(struct nfit_test *t) /* spa12 (bdw for dcr4) dimm4 */ spa = nfit_buf + offset; spa->header.type = ACPI_NFIT_TYPE_SYSTEM_ADDRESS; - spa->header.length = sizeof(*spa); + spa->header.length = sizeof_spa(spa); memcpy(spa->range_guid, to_nfit_uuid(NFIT_SPA_BDW), 16); spa->range_index = 12+1; spa->address = t->dimm_dma[4]; @@ -2739,7 +2747,7 @@ static void nfit_test1_setup(struct nfit_test *t) /* spa0 (flat range with no bdw aliasing) */ spa = nfit_buf + offset; spa->header.type = ACPI_NFIT_TYPE_SYSTEM_ADDRESS; - spa->header.length = sizeof(*spa); + spa->header.length = sizeof_spa(spa); memcpy(spa->range_guid, to_nfit_uuid(NFIT_SPA_PM), 16); spa->range_index = 0+1; spa->address = t->spa_set_dma[0]; @@ -2749,7 +2757,7 @@ static void nfit_test1_setup(struct nfit_test *t) /* virtual cd region */ spa = nfit_buf + offset; spa->header.type = ACPI_NFIT_TYPE_SYSTEM_ADDRESS; - spa->header.length = sizeof(*spa); + spa->header.length = sizeof_spa(spa); memcpy(spa->range_guid, to_nfit_uuid(NFIT_SPA_VCD), 16); spa->range_index = 0; spa->address = t->spa_set_dma[1];
ACPI 6.4 introduced the "SpaLocationCookie" to the NFIT "System Physical Address (SPA) Range Structure". The presence of that new field is indicated by the ACPI_NFIT_LOCATION_COOKIE_VALID flag. Pre-ACPI-6.4 firmware implementations omit the flag and maintain the original size of the structure. Update the implementation to check that flag to determine the size rather than the ACPI 6.4 compliant definition of 'struct acpi_nfit_system_address' from the Linux ACPICA definitions. Update the test infrastructure for the new expectations as well, i.e. continue to emulate the ACPI 6.3 definition of that structure. Without this fix the kernel fails to validate 'SPA' structures and this leads to a crash in nfit_get_smbios_id() since that routine assumes that SPAs are valid if it finds valid SMBIOS tables. BUG: unable to handle page fault for address: ffffffffffffffa8 [..] Call Trace: skx_get_nvdimm_info+0x56/0x130 [skx_edac] skx_get_dimm_config+0x1f5/0x213 [skx_edac] skx_register_mci+0x132/0x1c0 [skx_edac] Cc: Bob Moore <robert.moore@intel.com> Cc: Erik Kaneda <erik.kaneda@intel.com> Fixes: cf16b05c607b ("ACPICA: ACPI 6.4: NFIT: add Location Cookie field") Reported-by: Yi Zhang <yi.zhang@redhat.com> Tested-by: Yi Zhang <yi.zhang@redhat.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com> --- Rafael, I can take this through nvdimm.git after -rc1, but if you are sending any fixes to Linus based on your merge baseline between now and Monday, please pick up this one. drivers/acpi/nfit/core.c | 15 ++++++++++---- tools/testing/nvdimm/test/nfit.c | 42 +++++++++++++++++++++++--------------- 2 files changed, 36 insertions(+), 21 deletions(-)