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linux/drivers/edac
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Qiuxu Zhuo c20da24272 EDAC/i10nm: Skip DIMM enumeration on a disabled memory controller 
[ Upstream commit 2e6fe1bbef ]

When loading the i10nm_edac driver on some Intel Granite Rapids servers,
a call trace may appear as follows:

  UBSAN: shift-out-of-bounds in drivers/edac/skx_common.c:453:16
  shift exponent -66 is negative
  ...
  __ubsan_handle_shift_out_of_bounds+0x1e3/0x390
  skx_get_dimm_info.cold+0x47/0xd40 [skx_edac_common]
  i10nm_get_dimm_config+0x23e/0x390 [i10nm_edac]
  skx_register_mci+0x159/0x220 [skx_edac_common]
  i10nm_init+0xcb0/0x1ff0 [i10nm_edac]
  ...

This occurs because some BIOS may disable a memory controller if there
aren't any memory DIMMs populated on this memory controller. The DIMMMTR
register of this disabled memory controller contains the invalid value
~0, resulting in the call trace above.

Fix this call trace by skipping DIMM enumeration on a disabled memory
controller.

Fixes: ba987eaaab ("EDAC/i10nm: Add Intel Granite Rapids server support")
Reported-by: Jose Jesus Ambriz Meza <jose.jesus.ambriz.meza@intel.com>
Reported-by: Chia-Lin Kao (AceLan) <acelan.kao@canonical.com>
Closes: https://lore.kernel.org/all/20250730063155.2612379-1-acelan.kao@canonical.com/
Signed-off-by: Qiuxu Zhuo <qiuxu.zhuo@intel.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
Tested-by: Chia-Lin Kao (AceLan) <acelan.kao@canonical.com>
Link: https://lore.kernel.org/r/20250806065707.3533345-1-qiuxu.zhuo@intel.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
History 2025-10-15 12:03:17 +02:00
..
al_mc_edac.c EDAC/al_mc: Make use of the helper function devm_add_action_or_reset() 2021-09-28 18:35:11 +02:00
altera_edac.c EDAC/altera: Delete an inappropriate dma_free_coherent() call 2025-08-25 13:56:16 +02:00
altera_edac.h EDAC/altera: Set DDR and SDMMC interrupt mask before registration 2025-04-28 12:38:53 +02:00
amd64_edac.c EDAC/amd64: Fix size calculation for Non-Power-of-Two DIMMs 2025-06-25 16:40:03 +02:00
amd64_edac.h EDAC/amd64: Remove unused register accesses 2024-06-12 11:33:45 +02:00
amd76x_edac.c EDAC: Do not issue useless debug statements in the polling routine 2020-10-26 12:59:56 +01:00
armada_xp_edac.c Get rid of 'remove_new' relic from platform driver struct 2024-12-01 15:12:43 -08:00
aspeed_edac.c Get rid of 'remove_new' relic from platform driver struct 2024-12-01 15:12:43 -08:00
bluefield_edac.c EDAC/bluefield: Don't use bluefield_edac_readl() result on error 2025-05-22 17:58:28 +02:00
cpc925_edac.c Get rid of 'remove_new' relic from platform driver struct 2024-12-01 15:12:43 -08:00
debugfs.c EDAC: Use string choice helper functions 2025-02-25 22:19:55 +01:00
dmc520_edac.c Get rid of 'remove_new' relic from platform driver struct 2024-12-01 15:12:43 -08:00
e7xxx_edac.c EDAC: Sanitize MODULE_AUTHOR strings 2023-03-28 15:43:30 +02:00
e752x_edac.c EDAC: Sanitize MODULE_AUTHOR strings 2023-03-28 15:43:30 +02:00
ecs.c EDAC: Initialize EDAC features sysfs attributes 2025-06-30 10:57:24 +02:00
edac_device.c EDAC/device: Fix dev_set_name() format string 2025-03-05 23:35:01 +01:00
edac_device.h EDAC: Remove unused struct members 2024-03-27 18:26:58 +01:00
edac_device_sysfs.c EDAC/device: Remove edac_dev_sysfs_block_attribute::store() 2024-03-27 18:26:57 +01:00
edac_mc.c EDAC: Fix typos in comments 2024-12-15 22:17:34 +01:00
edac_mc.h EDAC/mc: Determine mci pointer from the error descriptor 2020-02-17 13:05:10 +01:00
edac_mc_sysfs.c EDAC: Fix typos in comments 2024-12-15 22:17:34 +01:00
edac_module.c EDAC: constantify the struct bus_type usage 2024-01-04 14:34:27 +01:00
edac_module.h EDAC/device: Fix period calculation in edac_device_reset_delay_period() 2022-12-30 15:51:41 +01:00
edac_pci.c treewide: Replace GPLv2 boilerplate/reference with SPDX - gpl-2.0_56.RULE (part 2) 2022-06-10 14:51:35 +02:00
edac_pci.h EDAC: Remove unused struct members 2024-03-27 18:26:58 +01:00
edac_pci_sysfs.c Driver core changes for 6.8-rc1 2024-01-18 09:48:40 -08:00
fsl_ddr_edac.c EDAC/fsl_ddr: Add support for i.MX9 DDR controller 2024-10-23 16:53:55 +02:00
fsl_ddr_edac.h EDAC/fsl_ddr: Add support for i.MX9 DDR controller 2024-10-23 16:53:55 +02:00
ghes_edac.c EDAC/ghes: Add missing newline to pr_info() statement 2024-05-28 16:13:09 +02:00
highbank_l2_edac.c Get rid of 'remove_new' relic from platform driver struct 2024-12-01 15:12:43 -08:00
highbank_mc_edac.c Get rid of 'remove_new' relic from platform driver struct 2024-12-01 15:12:43 -08:00
i7core_edac.c EDAC/{sb,i7core}_edac: Do not use a plain integer for a NULL pointer 2023-11-28 15:43:43 +01:00
i10nm_base.c EDAC/i10nm: Skip DIMM enumeration on a disabled memory controller 2025-10-15 12:03:17 +02:00
i3000_edac.c EDAC: Do not issue useless debug statements in the polling routine 2020-10-26 12:59:56 +01:00
i3200_edac.c EDAC: Do not issue useless debug statements in the polling routine 2020-10-26 12:59:56 +01:00
i5000_edac.c EDAC: Fix typos in comments 2024-12-15 22:17:34 +01:00
i5100_edac.c EDAC: Sanitize MODULE_AUTHOR strings 2023-03-28 15:43:30 +02:00
i5400_edac.c EDAC: Use string choice helper functions 2025-02-25 22:19:55 +01:00
i7300_edac.c EDAC: Use string choice helper functions 2025-02-25 22:19:55 +01:00
i82443bxgx_edac.c EDAC: Do not issue useless debug statements in the polling routine 2020-10-26 12:59:56 +01:00
i82860_edac.c EDAC: Sanitize MODULE_AUTHOR strings 2023-03-28 15:43:30 +02:00
i82875p_edac.c EDAC: Do not issue useless debug statements in the polling routine 2020-10-26 12:59:56 +01:00
i82975x_edac.c EDAC: Do not issue useless debug statements in the polling routine 2020-10-26 12:59:56 +01:00
ie31200_edac.c EDAC/ie31200: Add Intel Raptor Lake-HX SoCs support 2025-07-07 10:53:47 -07:00
igen6_edac.c EDAC/igen6: Add Intel Wildcat Lake SoCs support 2025-07-07 10:51:58 -07:00
Kconfig Merge remote-tracking branches 'ras/edac-cxl', 'ras/edac-drivers' and 'ras/edac-misc' into edac-updates 2025-03-25 14:53:27 +01:00
layerscape_edac.c Get rid of 'remove_new' relic from platform driver struct 2024-12-01 15:12:43 -08:00
loongson_edac.c EDAC: Add an EDAC driver for the Loongson memory controller 2025-01-04 12:02:04 +01:00
Makefile EDAC: Add a memory repair control feature 2025-02-26 11:13:23 +01:00
mce_amd.c x86/msr: Add explicit includes of <asm/msr.h> 2025-05-02 10:23:47 +02:00
mce_amd.h x86/mce/amd, edac: Remove report_gart_errors 2020-04-14 15:53:46 +02:00
mem_repair.c - i10nm: 2025-07-29 16:30:38 -07:00
mpc85xx_edac.c Get rid of 'remove_new' relic from platform driver struct 2024-12-01 15:12:43 -08:00
mpc85xx_edac.h treewide: Replace GPLv2 boilerplate/reference with SPDX - gpl-2.0_56.RULE (part 2) 2022-06-10 14:51:35 +02:00
npcm_edac.c Get rid of 'remove_new' relic from platform driver struct 2024-12-01 15:12:43 -08:00
octeon_edac-l2c.c Get rid of 'remove_new' relic from platform driver struct 2024-12-01 15:12:43 -08:00
octeon_edac-lmc.c Get rid of 'remove_new' relic from platform driver struct 2024-12-01 15:12:43 -08:00
octeon_edac-pc.c Get rid of 'remove_new' relic from platform driver struct 2024-12-01 15:12:43 -08:00
octeon_edac-pci.c Get rid of 'remove_new' relic from platform driver struct 2024-12-01 15:12:43 -08:00
pasemi_edac.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 333 2019-06-05 17:37:06 +02:00
pnd2_edac.c EDAC/pnd2: Make read-only const array intlv static 2025-03-03 16:39:26 +01:00
pnd2_edac.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 288 2019-06-05 17:36:37 +02:00
qcom_edac.c EDAC/qcom: Correct interrupt enable register configuration 2025-02-14 20:36:11 +01:00
r82600_edac.c EDAC: Sanitize MODULE_AUTHOR strings 2023-03-28 15:43:30 +02:00
sb_edac.c EDAC/sb_edac: Fix the compile warning of large frame size 2024-09-03 15:09:22 -07:00
scrub.c EDAC: Initialize EDAC features sysfs attributes 2025-06-30 10:57:24 +02:00
sifive_edac.c EDAC: Remove dynamic attributes from edac_device_alloc_ctl_info() 2024-03-27 18:26:58 +01:00
skx_base.c - Remove the less generic CPU matching infra around struct x86_cpu_desc and 2025-01-21 09:30:59 -08:00
skx_common.c EDAC/{skx_common,i10nm}: Use scnprintf() for safer buffer handling 2025-07-15 10:06:58 -07:00
skx_common.h EDAC/{skx_common,i10nm}: Add RRL support for Intel Granite Rapids server 2025-04-17 10:45:21 -07:00
synopsys_edac.c EDAC/synopsys: Clear the ECC counters on init 2025-07-14 12:15:37 +02:00
thunderx_edac.c EDAC/thunderx: Remove unused struct error_syndrome 2024-05-27 14:42:04 +02:00
ti_edac.c Get rid of 'remove_new' relic from platform driver struct 2024-12-01 15:12:43 -08:00
versal_edac.c Get rid of 'remove_new' relic from platform driver struct 2024-12-01 15:12:43 -08:00
wq.c EDAC/wq: Remove unneeded flush_workqueue() 2022-08-25 10:50:35 +02:00
x38_edac.c EDAC: Do not issue useless debug statements in the polling routine 2020-10-26 12:59:56 +01:00
xgene_edac.c EDAC: Use string choice helper functions 2025-02-25 22:19:55 +01:00
zynqmp_edac.c Get rid of 'remove_new' relic from platform driver struct 2024-12-01 15:12:43 -08:00