linux-stable.git/drivers/edac, branch v5.4.293

EDAC/ie31200: Fix the error path order of ie31200_init()

2025-04-10T12:29:39+00:00

[ Upstream commit 231e341036d9988447e3b3345cf741a98139199e ]

The error path order of ie31200_init() is incorrect, fix it.

Fixes: 709ed1bcef12 ("EDAC/ie31200: Fallback if host bridge device is already initialized")
Signed-off-by: Qiuxu Zhuo 
Signed-off-by: Tony Luck 
Tested-by: Gary Wang 
Link: https://lore.kernel.org/r/20250310011411.31685-4-qiuxu.zhuo@intel.com
Signed-off-by: Sasha Levin

EDAC/ie31200: Fix the DIMM size mask for several SoCs

2025-04-10T12:29:39+00:00

[ Upstream commit 3427befbbca6b19fe0e37f91d66ce5221de70bf1 ]

The DIMM size mask for {Sky, Kaby, Coffee} Lake is not bits{7:0},
but bits{5:0}. Fix it.

Fixes: 953dee9bbd24 ("EDAC, ie31200_edac: Add Skylake support")
Signed-off-by: Qiuxu Zhuo 
Signed-off-by: Tony Luck 
Tested-by: Gary Wang 
Link: https://lore.kernel.org/r/20250310011411.31685-3-qiuxu.zhuo@intel.com
Signed-off-by: Sasha Levin

EDAC/ie31200: Fix the size of EDAC_MC_LAYER_CHIP_SELECT layer

2025-04-10T12:29:39+00:00

[ Upstream commit d59d844e319d97682c8de29b88d2d60922a683b3 ]

The EDAC_MC_LAYER_CHIP_SELECT layer pertains to the rank, not the DIMM.
Fix its size to reflect the number of ranks instead of the number of DIMMs.
Also delete the unused macros IE31200_{DIMMS,RANKS}.

Fixes: 7ee40b897d18 ("ie31200_edac: Introduce the driver")
Signed-off-by: Qiuxu Zhuo 
Signed-off-by: Tony Luck 
Tested-by: Gary Wang 
Link: https://lore.kernel.org/r/20250310011411.31685-2-qiuxu.zhuo@intel.com
Signed-off-by: Sasha Levin

EDAC/fsl_ddr: Fix bad bit shift operations

2024-12-14T18:44:23+00:00

[ Upstream commit 9ec22ac4fe766c6abba845290d5139a3fbe0153b ]

Fix undefined behavior caused by left-shifting a negative value in the
expression:

    cap_high ^ (1 << (bad_data_bit - 32))

The variable bad_data_bit ranges from 0 to 63. When it is less than 32,
bad_data_bit - 32 becomes negative, and left-shifting by a negative
value in C is undefined behavior.

Fix this by combining cap_high and cap_low into a 64-bit variable.

  [ bp: Massage commit message, simplify error bits handling. ]

Fixes: ea2eb9a8b620 ("EDAC, fsl-ddr: Separate FSL DDR driver from MPC85xx")
Signed-off-by: Priyanka Singh 
Signed-off-by: Li Yang 
Signed-off-by: Frank Li 
Signed-off-by: Borislav Petkov (AMD) 
Link: https://lore.kernel.org/r/20241016-imx95_edac-v3-3-86ae6fc2756a@nxp.com
Signed-off-by: Sasha Levin

EDAC/bluefield: Fix potential integer overflow

2024-12-14T18:44:23+00:00

[ Upstream commit 1fe774a93b46bb029b8f6fa9d1f25affa53f06c6 ]

The 64-bit argument for the "get DIMM info" SMC call consists of mem_ctrl_idx
left-shifted 16 bits and OR-ed with DIMM index.  With mem_ctrl_idx defined as
32-bits wide the left-shift operation truncates the upper 16 bits of
information during the calculation of the SMC argument.

The mem_ctrl_idx stack variable must be defined as 64-bits wide to prevent any
potential integer overflow, i.e. loss of data from upper 16 bits.

Fixes: 82413e562ea6 ("EDAC, mellanox: Add ECC support for BlueField DDR4")
Signed-off-by: David Thompson 
Signed-off-by: Borislav Petkov (AMD) 
Reviewed-by: Shravan Kumar Ramani 
Link: https://lore.kernel.org/r/20240930151056.10158-1-davthompson@nvidia.com
Signed-off-by: Sasha Levin

EDAC, i10nm: make skx_common.o a separate module

2024-08-19T03:33:25+00:00

[ Upstream commit 123b158635505c89ed0d3ef45c5845ff9030a466 ]

Commit 598afa050403 ("kbuild: warn objects shared among multiple modules")
was added to track down cases where the same object is linked into
multiple modules. This can cause serious problems if some modules are
builtin while others are not.

That test triggers this warning:

scripts/Makefile.build:236: drivers/edac/Makefile: skx_common.o is added to multiple modules: i10nm_edac skx_edac

Make this a separate module instead.

[Tony: Added more background details to commit message]

Fixes: d4dc89d069aa ("EDAC, i10nm: Add a driver for Intel 10nm server processors")
Signed-off-by: Arnd Bergmann 
Signed-off-by: Tony Luck 
Link: https://lore.kernel.org/all/20240529095132.1929397-1-arnd@kernel.org/
Signed-off-by: Sasha Levin

EDAC/skx_common: Add new ADXL components for 2-level memory

2024-08-19T03:33:25+00:00

[ Upstream commit 2f4348e5a86198704368a699a7c4cdeb21d569f5 ]

Some Intel servers may configure memory in 2 levels, using
fast "near" memory (e.g. DDR) as a cache for larger, slower,
"far" memory (e.g. 3D X-point).

In these configurations the BIOS ADXL address translation for
an address in a 2-level memory range will provide details of
both the "near" and far components.

Current exported ADXL components are only for 1-level memory
system or for 2nd level memory of 2-level memory system. So
add new ADXL components for 1st level memory of 2-level memory
system to fully support 2-level memory system and the detection
of memory error source(1st level memory or 2nd level memory).

Signed-off-by: Qiuxu Zhuo 
Signed-off-by: Tony Luck 
Link: https://lore.kernel.org/r/20210611170123.1057025-2-tony.luck@intel.com
Stable-dep-of: 123b15863550 ("EDAC, i10nm: make skx_common.o a separate module")
Signed-off-by: Sasha Levin

EDAC, skx: Retrieve and print retry_rd_err_log registers

2024-08-19T03:33:25+00:00

[ Upstream commit e80634a75aba90e7485cd1fdb463fcac5d45f14d ]

Skylake logs some additional useful information in per-channel
registers in addition the the architectural status/addr/misc
logged in the machine check bank.

Pick up this information and add it to the EDAC log:

	retry_rd_err_[five 32-bit register values]

Sorry, no definitions for these registers. OEMs and DIMM vendors
will be able to use them to isolate which cells in the DIMM are
causing problems.

	correrrcnt[per rank corrected error counts]

Note that if additional errors are logged while these registers are
being read, you may see a jumble of values some from earlier errors,
others from later errors (since the registers report the most recent
logged error). The correrrcnt registers provide error counts per possible
rank. If these counts only change by one since the previous error logged
for this channel, then it is safe to assume that the registers logged
provide a coherent view of one error.

With this change EDAC logs look like this:

EDAC MC4: 1 CE memory read error on CPU_SrcID#2_MC#0_Chan#1_DIMM#0 (channel:1 slot:0 page:0x8f26018 offset:0x0 grain:32 syndrome:0x0 -  err_code:0x0101:0x0091 socket:2 imc:0 rank:0 bg:0 ba:0 row:0x1f880 col:0x200 retry_rd_err_log[0001a209 00000000 00000001 04800001 0001f880] correrrcnt[0001 0000 0000 0000 0000 0000 0000 0000])

Acked-by: Aristeu Rozanski 
Signed-off-by: Tony Luck 
Stable-dep-of: 123b15863550 ("EDAC, i10nm: make skx_common.o a separate module")
Signed-off-by: Sasha Levin

EDAC, skx_common: Refactor so that we initialize "dev" in result of adxl decode.

2024-08-19T03:33:25+00:00

[ Upstream commit 29b8e84fbc23cb2b70317b745641ea0569426872 ]

Simplifies the code a little.

Acked-by: Aristeu Rozanski 
Signed-off-by: Tony Luck 
Stable-dep-of: 123b15863550 ("EDAC, i10nm: make skx_common.o a separate module")
Signed-off-by: Sasha Levin

EDAC/thunderx: Fix possible out-of-bounds string access

2024-01-25T22:34:21+00:00

[ Upstream commit 475c58e1a471e9b873e3e39958c64a2d278275c8 ]

Enabling -Wstringop-overflow globally exposes a warning for a common bug
in the usage of strncat():

  drivers/edac/thunderx_edac.c: In function 'thunderx_ocx_com_threaded_isr':
  drivers/edac/thunderx_edac.c:1136:17: error: 'strncat' specified bound 1024 equals destination size [-Werror=stringop-overflow=]
   1136 |                 strncat(msg, other, OCX_MESSAGE_SIZE);
        |                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   ...
   1145 |                                 strncat(msg, other, OCX_MESSAGE_SIZE);
   ...
   1150 |                                 strncat(msg, other, OCX_MESSAGE_SIZE);

   ...

Apparently the author of this driver expected strncat() to behave the
way that strlcat() does, which uses the size of the destination buffer
as its third argument rather than the length of the source buffer. The
result is that there is no check on the size of the allocated buffer.

Change it to strlcat().

  [ bp: Trim compiler output, fixup commit message. ]

Fixes: 41003396f932 ("EDAC, thunderx: Add Cavium ThunderX EDAC driver")
Signed-off-by: Arnd Bergmann 
Signed-off-by: Borislav Petkov (AMD) 
Reviewed-by: Gustavo A. R. Silva 
Link: https://lore.kernel.org/r/20231122222007.3199885-1-arnd@kernel.org
Signed-off-by: Sasha Levin