zhouminandGreg Kroah-Hartman b401454a86 EDAC/{skx_common,skx}: Fix UBSAN shift-out-of-bounds in skx_get_dimm_info ...

[ Upstream commit c63ed6e1f5 ]

When the skx_get_dimm_attr() helper returns -EINVAL,
skx_get_dimm_info() does not validate these return values before using
them in a shift operation:

    size = ((1ull << (rows + cols + ranks)) * banks) >> (20 - 3);

If all three values are -22, the shift exponent becomes -66, triggering
a UBSAN shift-out-of-bounds error:

    UBSAN: shift-out-of-bounds in drivers/edac/skx_common.c
    shift exponent -66 is negative

Fixes: 88a242c987 ("EDAC, skx_common: Separate common code out from skx_edac")
Signed-off-by: zhoumin <teczm@foxmail.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
Link: https://patch.msgid.link/tencent_2A0CC835A18366643CBD2865B169948AB409@qq.com
Signed-off-by: Sasha Levin <sashal@kernel.org>

2026-07-24 15:54:37 +02:00

..

al_mc_edac.c

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altera_edac.c

EDAC/altera: Remove IRQF_ONESHOT

2026-03-04 07:19:30 -05:00

altera_edac.h

EDAC/altera: Set DDR and SDMMC interrupt mask before registration

2025-05-09 09:41:34 +02:00

amd64_edac.c

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amd64_edac.h

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amd76x_edac.c

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amd8111_edac.c

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amd8111_edac.h

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amd8131_edac.c

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amd8131_edac.h

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armada_xp_edac.c

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aspeed_edac.c

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bluefield_edac.c

EDAC/bluefield: Fix potential integer overflow

2024-12-14 19:53:16 +01:00

cell_edac.c

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cpc925_edac.c

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debugfs.c

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dmc520_edac.c

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e7xxx_edac.c

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e752x_edac.c

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edac_device_sysfs.c

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edac_device.c

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edac_device.h

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edac_mc_sysfs.c

EDAC/mc_sysfs: Increase legacy channel support to 16

2025-12-07 06:12:09 +09:00

edac_mc.c

EDAC/mc: Fix error path ordering in edac_mc_alloc()

2026-04-18 10:35:58 +02:00

edac_mc.h

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edac_module.c

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edac_module.h

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edac_pci_sysfs.c

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edac_pci.c

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edac_pci.h

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fsl_ddr_edac.c

EDAC/fsl_ddr: Fix bad bit shift operations

2024-12-14 19:53:17 +01:00

fsl_ddr_edac.h

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ghes_edac.c

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highbank_l2_edac.c

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highbank_mc_edac.c

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i7core_edac.c

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i10nm_base.c

EDAC/i10nm: Don't fail probing if ADXL is missing

2026-07-24 15:54:29 +02:00

i3000_edac.c

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i3200_edac.c

EDAC/i3200: Fix a resource leak in i3200_probe1()

2026-02-06 16:44:00 +01:00

i5000_edac.c

EDAC/i5000: Fix snprintf() size calculation in calculate_dimm_size()

2026-03-04 07:19:31 -05:00

i5100_edac.c

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i5400_edac.c

EDAC/i5400: Fix snprintf() limit calculation in calculate_dimm_size()

2026-03-04 07:19:32 -05:00

i7300_edac.c

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i82443bxgx_edac.c

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i82860_edac.c

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i82875p_edac.c

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i82975x_edac.c

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ie31200_edac.c

EDAC/ie31200: work around false positive build warning

2025-06-04 14:40:12 +02:00

igen6_edac.c

EDAC/igen6: Avoid segmentation fault on module unload

2024-12-14 19:53:17 +01:00

Kconfig

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layerscape_edac.c

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Makefile

EDAC, i10nm: make skx_common.o a separate module

2024-08-03 08:48:52 +02:00

mce_amd.c

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mce_amd.h

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mpc85xx_edac.c

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mpc85xx_edac.h

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octeon_edac-l2c.c

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octeon_edac-lmc.c

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octeon_edac-pc.c

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octeon_edac-pci.c

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pasemi_edac.c

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pnd2_edac.c

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pnd2_edac.h

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ppc4xx_edac.c

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ppc4xx_edac.h

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qcom_edac.c

EDAC/qcom: Correct interrupt enable register configuration

2025-03-07 16:56:40 +01:00

r82600_edac.c

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sb_edac.c

minmax: add a few more MIN_T/MAX_T users

2025-10-02 13:40:43 +02:00

sifive_edac.c

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skx_base.c

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skx_common.c

EDAC/{skx_common,skx}: Fix UBSAN shift-out-of-bounds in skx_get_dimm_info

2026-07-24 15:54:37 +02:00

skx_common.h

minmax: make generic MIN() and MAX() macros available everywhere

2025-10-02 13:40:43 +02:00

synopsys_edac.c

EDAC/synopsys: Clear the ECC counters on init

2025-08-28 16:25:52 +02:00

thunderx_edac.c

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ti_edac.c

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wq.c

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x38_edac.c

EDAC/x38: Fix a resource leak in x38_probe1()

2026-02-06 16:44:00 +01:00

xgene_edac.c

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