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commit f8efca92ae509c25e0a4bd5d0a86decea4f0c41e upstream.
Do alignment logic properly and use the "ptr" local variable for
calculating the remainder of the alignment.
This became an issue because struct edac_mc_layer has a size that is not
zero modulo eight, and the next offset that was prepared for the private
data was unaligned, causing an alignment exception.
The patch in Fixes: which broke this actually wanted to "what we
actually care about is the alignment of the actual pointer that's about
to be returned." But it didn't check that alignment.
Use the correct variable "ptr" for that.
[ bp: Massage commit message. ]
Fixes: 8447c4d15e35 ("edac: Do alignment logic properly in edac_align_ptr()")
Signed-off-by: Eliav Farber <farbere@amazon.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Cc: <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/20220113100622.12783-2-farbere@amazon.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit dfd0dfb9a7cc04acf93435b440dd34c2ca7b4424 upstream.
The driver overrides error codes returned by platform_get_irq_optional()
to -EINVAL for some strange reason, so if it returns -EPROBE_DEFER, the
driver will fail the probe permanently instead of the deferred probing.
Switch to propagating the proper error codes to platform driver code
upwards.
[ bp: Massage commit message. ]
Fixes: 0d4429301c4a ("EDAC: Add APM X-Gene SoC EDAC driver")
Signed-off-by: Sergey Shtylyov <s.shtylyov@omp.ru>
Signed-off-by: Borislav Petkov <bp@suse.de>
Cc: <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/20220124185503.6720-3-s.shtylyov@omp.ru
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit 279eb8575fdaa92c314a54c0d583c65e26229107 upstream.
The driver overrides the error codes returned by platform_get_irq() to
-ENODEV for some strange reason, so if it returns -EPROBE_DEFER, the
driver will fail the probe permanently instead of the deferred probing.
Switch to propagating the proper error codes to platform driver code
upwards.
[ bp: Massage commit message. ]
Fixes: 71bcada88b0f ("edac: altera: Add Altera SDRAM EDAC support")
Signed-off-by: Sergey Shtylyov <s.shtylyov@omp.ru>
Signed-off-by: Borislav Petkov <bp@suse.de>
Acked-by: Dinh Nguyen <dinguyen@kernel.org>
Cc: <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/20220124185503.6720-2-s.shtylyov@omp.ru
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
[ Upstream commit bd1d6da17c296bd005bfa656952710d256e77dd3 ]
Version 2.40a supports DDR_ECC_INTR_SUPPORT for a quirk, so use that
quirk to determine a call to setup_address_map().
Signed-off-by: Dinh Nguyen <dinguyen@kernel.org>
Signed-off-by: Borislav Petkov <bp@suse.de>
Reviewed-by: Michal Simek <michal.simek@xilinx.com>
Link: https://lkml.kernel.org/r/20211012190709.1504152-1-dinguyen@kernel.org
Signed-off-by: Sasha Levin <sashal@kernel.org>
[ Upstream commit 9f4873fb6af7966de8fcbd95c36b61351c1c4b1f ]
AMD Rome systems and later support interleaving between three identical
ranks within a channel.
Check for this mode by counting the number of enabled chip selects and
comparing their masks. If there are exactly three enabled chip selects
and their masks are identical, then three rank interleaving is enabled.
The size of a rank is determined from its mask value. However, three
rank interleaving doesn't follow the method of swapping an interleave
bit with the most significant bit. Rather, the interleave bit is flipped
and the most significant bit remains the same. There is only a single
interleave bit in this case.
Account for this when determining the chip select size by keeping the
most significant bit at its original value and ignoring any zero bits.
This will return a full bitmask in [MSB:1].
Fixes: e53a3b267fb0 ("EDAC/amd64: Find Chip Select memory size using Address Mask")
Signed-off-by: Yazen Ghannam <yazen.ghannam@amd.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Link: https://lkml.kernel.org/r/20211005154419.2060504-1-yazen.ghannam@amd.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
commit 537bddd069c743759addf422d0b8f028ff0f8dbc upstream.
The computation of TOHM is off by one bit. This missed bit results in
too low a value for TOHM, which can cause errors in regular memory to
incorrectly report:
EDAC MC0: 1 CE Error at MMIOH area, on addr 0x000000207fffa680 on any memory
Fixes: 50d1bb93672f ("sb_edac: add support for Haswell based systems")
Cc: stable@vger.kernel.org
Reported-by: Meeta Saggi <msaggi@purestorage.com>
Signed-off-by: Eric Badger <ebadger@purestorage.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
Link: https://lore.kernel.org/r/20211010170127.848113-1-ebadger@purestorage.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit d9b7748ffc45250b4d7bcf22404383229bc495f5 upstream.
The number of correctable errors is displayed as uncorrectable
errors because the "SBE" error count is passed to both calls of
edac_mc_handle_error().
Pass the correct uncorrectable error count to the second
edac_mc_handle_error() call when logging uncorrectable errors.
[ bp: Massage commit message. ]
Fixes: 7f6998a41257 ("ARM: 8888/1: EDAC: Add driver for the Marvell Armada XP SDRAM and L2 cache ECC")
Signed-off-by: Hans Potsch <hans.potsch@nokia.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Cc: <stable@vger.kernel.org>
Link: https://lkml.kernel.org/r/20211006121332.58788-1-hans.potsch@nokia.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
[ Upstream commit 2294a7299f5e51667b841f63c6d69474491753fb ]
MCDDRCFG is a per-channel register and uses bit{0,1} to indicate
the NVDIMM presence on DIMM slot{0,1}. Current i10nm_edac driver
wrongly uses MCDDRCFG as per-DIMM register and fails to detect
the NVDIMM.
Fix it by reading MCDDRCFG as per-channel register and using its
bit{0,1} to check whether the NVDIMM is populated on DIMM slot{0,1}.
Fixes: d4dc89d069aa ("EDAC, i10nm: Add a driver for Intel 10nm server processors")
Reported-by: Fan Du <fan.du@intel.com>
Tested-by: Wen Jin <wen.jin@intel.com>
Signed-off-by: Qiuxu Zhuo <qiuxu.zhuo@intel.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
Link: https://lore.kernel.org/r/20210818175701.1611513-2-tony.luck@intel.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
[ Upstream commit 767f4b620edadac579c9b8b6660761d4285fa6f9 ]
Hypervisors likely do not expose the SMCA feature to the guest and
loading this module leads to false warnings. This module should not be
loaded in guests to begin with, but people tend to do so, especially
when testing kernels in VMs. And then they complain about those false
warnings.
Do the practical thing and do not load this module when running as a
guest to avoid all that complaining.
[ bp: Rewrite commit message. ]
Suggested-by: Borislav Petkov <bp@suse.de>
Signed-off-by: Smita Koralahalli <Smita.KoralahalliChannabasappa@amd.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Reviewed-by: Yazen Ghannam <yazen.ghannam@amd.com>
Tested-by: Kim Phillips <kim.phillips@amd.com>
Link: https://lkml.kernel.org/r/20210628172740.245689-1-Smita.KoralahalliChannabasappa@amd.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
[ Upstream commit f0a029fff4a50eb01648810a77ba1873e829fdd4 ]
There's little to no point in loading an EDAC driver running in a guest:
1) The CPU model reported by CPUID may not represent actual h/w
2) The hypervisor likely does not pass in access to memory controller devices
3) Hypervisors generally do not pass corrected error details to guests
Add a check in each of the Intel EDAC drivers for X86_FEATURE_HYPERVISOR
and simply return -ENODEV in the init routine.
Acked-by: Borislav Petkov <bp@suse.de>
Signed-off-by: Tony Luck <tony.luck@intel.com>
Link: https://lore.kernel.org/r/20210615174419.GA1087688@agluck-desk2.amr.corp.intel.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
[ Upstream commit 0a37f32ba5272b2d4ec8c8d0f6b212b81b578f7e ]
The module misses MODULE_DEVICE_TABLE() for of_device_id tables and thus
never autoloads on ID matches.
Add the missing declaration.
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Bixuan Cui <cuibixuan@huawei.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Cc: Tero Kristo <kristo@kernel.org>
Link: https://lkml.kernel.org/r/20210512033727.26701-1-cuibixuan@huawei.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
[ Upstream commit 6c13d7ff81e6d2f01f62ccbfa49d1b8d87f274d0 ]
Those were only laptops and are very very unlikely to have ECC memory.
Currently, when the driver attempts to load, it issues:
EDAC amd64: Error: F1 not found: device 0x1601 (broken BIOS?)
because the PCI device is the wrong one (it uses the F15h default one).
So do not load the driver on them as that is pointless.
Reported-by: Don Curtis <bugrprt21882@online.de>
Signed-off-by: Borislav Petkov <bp@suse.de>
Tested-by: Don Curtis <bugrprt21882@online.de>
Link: http://bugzilla.opensuse.org/show_bug.cgi?id=1179763
Link: https://lkml.kernel.org/r/20201218160622.20146-1-bp@alien8.de
Signed-off-by: Sasha Levin <sashal@kernel.org>
commit 706657b1febf446a9ba37dc51b89f46604f57ee9 upstream.
In order to setup its PCI component, the driver needs any node private
instance in order to get a reference to the PCI device and hand that
into edac_pci_create_generic_ctl(). For convenience, it uses the 0th
memory controller descriptor under the assumption that if any, the 0th
will be always present.
However, this assumption goes wrong when the 0th node doesn't have
memory and the driver doesn't initialize an instance for it:
EDAC amd64: F17h detected (node 0).
...
EDAC amd64: Node 0: No DIMMs detected.
But looking up node instances is not really needed - all one needs is
the pointer to the proper device which gets discovered during instance
init.
So stash that pointer into a variable and use it when setting up the
EDAC PCI component.
Clear that variable when the driver needs to unwind due to some
instances failing init to avoid any registration imbalance.
Cc: <stable@vger.kernel.org>
Signed-off-by: Borislav Petkov <bp@suse.de>
Link: https://lkml.kernel.org/r/20201122150815.13808-1-bp@alien8.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit 83ff51c4e3fecf6b8587ce4d46f6eac59f5d7c5a upstream.
Instead of raw access, use readl() to access MMIO registers of
memory controller to avoid possible compiler re-ordering.
Fixes: d4dc89d069aa ("EDAC, i10nm: Add a driver for Intel 10nm server processors")
Cc: <stable@vger.kernel.org>
Signed-off-by: Qiuxu Zhuo <qiuxu.zhuo@intel.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
[ Upstream commit 8de0c9917cc1297bc5543b61992d5bdee4ce621a ]
The edac_mce_amd module calls decode_dram_ecc() on AMD Family17h and
later systems. This function is used in amd64_edac_mod to do
system-specific decoding for DRAM ECC errors. The function takes a
"NodeId" as a parameter.
In AMD documentation, NodeId is used to identify a physical die in a
system. This can be used to identify a node in the AMD_NB code and also
it is used with umc_normaddr_to_sysaddr().
However, the input used for decode_dram_ecc() is currently the NUMA node
of a logical CPU. In the default configuration, the NUMA node and
physical die will be equivalent, so this doesn't have an impact.
But the NUMA node configuration can be adjusted with optional memory
interleaving modes. This will cause the NUMA node enumeration to not
match the physical die enumeration. The mismatch will cause the address
translation function to fail or report incorrect results.
Use struct cpuinfo_x86.cpu_die_id for the node_id parameter to ensure the
physical ID is used.
Fixes: fbe63acf62f5 ("EDAC, mce_amd: Use cpu_to_node() to find the node ID")
Signed-off-by: Yazen Ghannam <yazen.ghannam@amd.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Link: https://lkml.kernel.org/r/20201109210659.754018-4-Yazen.Ghannam@amd.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
- Preliminary RISC-V enablement - the bulk of it will arrive via the RISCV tree.
- Relax decompressed image placement rules for 32-bit ARM
- Add support for passing MOK certificate table contents via a config table
rather than a EFI variable.
- Add support for 18 bit DIMM row IDs in the CPER records.
- Work around broken Dell firmware that passes the entire Boot#### variable
contents as the command line
- Add definition of the EFI_MEMORY_CPU_CRYPTO memory attribute so we can
identify it in the memory map listings.
- Don't abort the boot on arm64 if the EFI RNG protocol is available but
returns with an error
- Replace slashes with exclamation marks in efivarfs file names
- Split efi-pstore from the deprecated efivars sysfs code, so we can
disable the latter on !x86.
- Misc fixes, cleanups and updates.
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'efi-core-2020-10-12' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull EFI changes from Ingo Molnar:
- Preliminary RISC-V enablement - the bulk of it will arrive via the
RISCV tree.
- Relax decompressed image placement rules for 32-bit ARM
- Add support for passing MOK certificate table contents via a config
table rather than a EFI variable.
- Add support for 18 bit DIMM row IDs in the CPER records.
- Work around broken Dell firmware that passes the entire Boot####
variable contents as the command line
- Add definition of the EFI_MEMORY_CPU_CRYPTO memory attribute so we
can identify it in the memory map listings.
- Don't abort the boot on arm64 if the EFI RNG protocol is available
but returns with an error
- Replace slashes with exclamation marks in efivarfs file names
- Split efi-pstore from the deprecated efivars sysfs code, so we can
disable the latter on !x86.
- Misc fixes, cleanups and updates.
* tag 'efi-core-2020-10-12' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (26 commits)
efi: mokvar: add missing include of asm/early_ioremap.h
efi: efivars: limit availability to X86 builds
efi: remove some false dependencies on CONFIG_EFI_VARS
efi: gsmi: fix false dependency on CONFIG_EFI_VARS
efi: efivars: un-export efivars_sysfs_init()
efi: pstore: move workqueue handling out of efivars
efi: pstore: disentangle from deprecated efivars module
efi: mokvar-table: fix some issues in new code
efi/arm64: libstub: Deal gracefully with EFI_RNG_PROTOCOL failure
efivarfs: Replace invalid slashes with exclamation marks in dentries.
efi: Delete deprecated parameter comments
efi/libstub: Fix missing-prototypes in string.c
efi: Add definition of EFI_MEMORY_CPU_CRYPTO and ability to report it
cper,edac,efi: Memory Error Record: bank group/address and chip id
edac,ghes,cper: Add Row Extension to Memory Error Record
efi/x86: Add a quirk to support command line arguments on Dell EFI firmware
efi/libstub: Add efi_warn and *_once logging helpers
integrity: Load certs from the EFI MOK config table
integrity: Move import of MokListRT certs to a separate routine
efi: Support for MOK variable config table
...
encounter an MCE in kernel space but while copying from user memory by
sending them a SIGBUS on return to user space and umapping the faulty
memory, by Tony Luck and Youquan Song.
* memcpy_mcsafe() rework by splitting the functionality into
copy_mc_to_user() and copy_mc_to_kernel(). This, as a result, enables
support for new hardware which can recover from a machine check
encountered during a fast string copy and makes that the default and
lets the older hardware which does not support that advance recovery,
opt in to use the old, fragile, slow variant, by Dan Williams.
* New AMD hw enablement, by Yazen Ghannam and Akshay Gupta.
* Do not use MSR-tracing accessors in #MC context and flag any fault
while accessing MCA architectural MSRs as an architectural violation
with the hope that such hw/fw misdesigns are caught early during the hw
eval phase and they don't make it into production.
* Misc fixes, improvements and cleanups, as always.
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Merge tag 'ras_updates_for_v5.10' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull RAS updates from Borislav Petkov:
- Extend the recovery from MCE in kernel space also to processes which
encounter an MCE in kernel space but while copying from user memory
by sending them a SIGBUS on return to user space and umapping the
faulty memory, by Tony Luck and Youquan Song.
- memcpy_mcsafe() rework by splitting the functionality into
copy_mc_to_user() and copy_mc_to_kernel(). This, as a result, enables
support for new hardware which can recover from a machine check
encountered during a fast string copy and makes that the default and
lets the older hardware which does not support that advance recovery,
opt in to use the old, fragile, slow variant, by Dan Williams.
- New AMD hw enablement, by Yazen Ghannam and Akshay Gupta.
- Do not use MSR-tracing accessors in #MC context and flag any fault
while accessing MCA architectural MSRs as an architectural violation
with the hope that such hw/fw misdesigns are caught early during the
hw eval phase and they don't make it into production.
- Misc fixes, improvements and cleanups, as always.
* tag 'ras_updates_for_v5.10' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/mce: Allow for copy_mc_fragile symbol checksum to be generated
x86/mce: Decode a kernel instruction to determine if it is copying from user
x86/mce: Recover from poison found while copying from user space
x86/mce: Avoid tail copy when machine check terminated a copy from user
x86/mce: Add _ASM_EXTABLE_CPY for copy user access
x86/mce: Provide method to find out the type of an exception handler
x86/mce: Pass pointer to saved pt_regs to severity calculation routines
x86/copy_mc: Introduce copy_mc_enhanced_fast_string()
x86, powerpc: Rename memcpy_mcsafe() to copy_mc_to_{user, kernel}()
x86/mce: Drop AMD-specific "DEFERRED" case from Intel severity rule list
x86/mce: Add Skylake quirk for patrol scrub reported errors
RAS/CEC: Convert to DEFINE_SHOW_ATTRIBUTE()
x86/mce: Annotate mce_rd/wrmsrl() with noinstr
x86/mce/dev-mcelog: Do not update kflags on AMD systems
x86/mce: Stop mce_reign() from re-computing severity for every CPU
x86/mce: Make mce_rdmsrl() panic on an inaccessible MSR
x86/mce: Increase maximum number of banks to 64
x86/mce: Delay clearing IA32_MCG_STATUS to the end of do_machine_check()
x86/MCE/AMD, EDAC/mce_amd: Remove struct smca_hwid.xec_bitmap
RAS/CEC: Fix cec_init() prototype
Shenhar.
* New AMD CPUs support, by Yazen Ghannam.
* The usual misc fixes and cleanups all over the subsystem.
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Merge tag 'edac_updates_for_v5.10' of git://git.kernel.org/pub/scm/linux/kernel/git/ras/ras
Pull EDAC updates from Borislav Petkov:
- Add Amazon's Annapurna Labs memory controller EDAC driver (Talel
Shenhar)
- New AMD CPUs support (Yazen Ghannam)
- The usual misc fixes and cleanups all over the subsystem
* tag 'edac_updates_for_v5.10' of git://git.kernel.org/pub/scm/linux/kernel/git/ras/ras:
EDAC/amd64: Set proper family type for Family 19h Models 20h-2Fh
EDAC/mc_sysfs: Add missing newlines when printing {max,dimm}_location
EDAC/aspeed: Use module_platform_driver() to simplify
EDAC, sb_edac: Simplify switch statement
EDAC/ti: Fix handling of platform_get_irq() error
EDAC/aspeed: Fix handling of platform_get_irq() error
EDAC/i5100: Fix error handling order in i5100_init_one()
EDAC/highbank: Handover Calxeda Highbank maintenance to Andre Przywara
EDAC/socfpga: Transfer SoCFPGA EDAC maintainership
EDAC/thunderx: Make symbol lmc_dfs_ents static
EDAC/al-mc-edac: Add Amazon's Annapurna Labs Memory Controller driver
dt-bindings: EDAC: Add Amazon's Annapurna Labs Memory Controller binding
EDAC/mce_amd: Add new error descriptions for existing types
EDAC: Replace HTTP links with HTTPS ones
AMD Family 19h Models 20h-2Fh use the same PCI IDs as Family 17h Models
70h-7Fh. The same family ops and number of channels also apply.
Use the Family17h Model 70h family_type and ops for Family 19h Models
20h-2Fh. Update the controller name to match the system.
Signed-off-by: Yazen Ghannam <yazen.ghannam@amd.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Link: https://lkml.kernel.org/r/20201009171803.3214354-1-Yazen.Ghannam@amd.com
Reading those sysfs entries gives:
[root@localhost /]# cat /sys/devices/system/edac/mc/mc0/max_location
memory 3 [root@localhost /]# cat /sys/devices/system/edac/mc/mc0/dimm0/dimm_location
memory 0 [root@localhost /]#
Add newlines after the value it prints for better readability.
[ bp: Make len a signed int and change the check to catch wraparound.
Increment the pointer p only when the length check passes. Use
scnprintf(). ]
Signed-off-by: Xiongfeng Wang <wangxiongfeng2@huawei.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Link: https://lkml.kernel.org/r/1600051734-8993-1-git-send-email-wangxiongfeng2@huawei.com
Use module_platform_driver() which makes the code simpler by eliminating
boilerplate code.
Signed-off-by: Liu Shixin <liushixin2@huawei.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Reviewed-by: Joel Stanley <joel@jms.id.au>
Link: https://lkml.kernel.org/r/20200914065358.3726216-1-liushixin2@huawei.com
Updates to the UEFI 2.8 Memory Error Record allow splitting the bank field
into bank address and bank group, and using the last 3 bits of the extended
field as a chip identifier.
When needed, print correct version of bank field, bank group, and chip
identification.
Based on UEFI 2.8 Table 299. Memory Error Record.
Signed-off-by: Alex Kluver <alex.kluver@hpe.com>
Reviewed-by: Russ Anderson <russ.anderson@hpe.com>
Reviewed-by: Kyle Meyer <kyle.meyer@hpe.com>
Reviewed-by: Steve Wahl <steve.wahl@hpe.com>
Acked-by: Borislav Petkov <bp@suse.de>
Link: https://lore.kernel.org/r/20200819143544.155096-3-alex.kluver@hpe.com
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Memory errors could be printed with incorrect row values since the DIMM
size has outgrown the 16 bit row field in the CPER structure. UEFI
Specification Version 2.8 has increased the size of row by allowing it to
use the first 2 bits from a previously reserved space within the structure.
When needed, add the extension bits to the row value printed.
Based on UEFI 2.8 Table 299. Memory Error Record
Signed-off-by: Alex Kluver <alex.kluver@hpe.com>
Tested-by: Russ Anderson <russ.anderson@hpe.com>
Reviewed-by: Steve Wahl <steve.wahl@hpe.com>
Reviewed-by: Kyle Meyer <kyle.meyer@hpe.com>
Acked-by: Borislav Petkov <bp@suse.de>
Link: https://lore.kernel.org/r/20200819143544.155096-2-alex.kluver@hpe.com
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Commit
b972fdba8665 ("EDAC/ghes: Fix NULL pointer dereference in ghes_edac_register()")
didn't clear all the information from the scanned system and, more
specifically, left ghes_hw.num_dimms to its previous value. On a
second load (CONFIG_DEBUG_TEST_DRIVER_REMOVE=y), the driver would use
the leftover num_dimms value which is not 0 and thus the 0 check in
enumerate_dimms() will get bypassed and it would go directly to the
pointer deref:
d = &hw->dimms[hw->num_dimms];
which is, of course, NULL:
#PF: supervisor write access in kernel mode
#PF: error_code(0x0002) - not-present page
PGD 0 P4D 0
Oops: 0002 [#1] PREEMPT SMP
CPU: 7 PID: 1 Comm: swapper/0 Not tainted 5.9.0-rc4+ #7
Hardware name: GIGABYTE MZ01-CE1-00/MZ01-CE1-00, BIOS F02 08/29/2018
RIP: 0010:enumerate_dimms.cold+0x7b/0x375
Reset the whole ghes_hw on driver unregister so that no stale values are
used on a second system scan.
Fixes: b972fdba8665 ("EDAC/ghes: Fix NULL pointer dereference in ghes_edac_register()")
Cc: Shiju Jose <shiju.jose@huawei.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Link: https://lkml.kernel.org/r/20200911164817.GA19320@zn.tnic
clang static analyzer reports this problem
sb_edac.c:959:2: warning: Undefined or garbage value
returned to caller
return type;
^~~~~~~~~~~
This is a false positive.
However by initializing the type to DEV_UNKNOWN the 3 case can be
removed from the switch, saving a comparison and jump.
Signed-off-by: Tom Rix <trix@redhat.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
Link: https://lore.kernel.org/r/20200907153225.7294-1-trix@redhat.com
platform_get_irq() returns a negative error number on error. In such a
case, comparison to 0 would pass the check therefore check the return
value properly, whether it is negative.
[ bp: Massage commit message. ]
Fixes: 86a18ee21e5e ("EDAC, ti: Add support for TI keystone and DRA7xx EDAC")
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Signed-off-by: Borislav Petkov <bp@suse.de>
Reviewed-by: Tero Kristo <t-kristo@ti.com>
Link: https://lkml.kernel.org/r/20200827070743.26628-2-krzk@kernel.org
platform_get_irq() returns a negative error number on error. In such a
case, comparison to 0 would pass the check therefore check the return
value properly, whether it is negative.
[ bp: Massage commit message. ]
Fixes: 9b7e6242ee4e ("EDAC, aspeed: Add an Aspeed AST2500 EDAC driver")
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Signed-off-by: Borislav Petkov <bp@suse.de>
Reviewed-by: Stefan Schaeckeler <schaecsn@gmx.net>
Link: https://lkml.kernel.org/r/20200827070743.26628-1-krzk@kernel.org
When pci_get_device_func() fails, the driver doesn't need to execute
pci_dev_put(). mci should still be freed, though, to prevent a memory
leak. When pci_enable_device() fails, the error injection PCI device
"einj" doesn't need to be disabled either.
[ bp: Massage commit message, rename label to "bail_mc_free". ]
Fixes: 52608ba205461 ("i5100_edac: probe for device 19 function 0")
Signed-off-by: Dinghao Liu <dinghao.liu@zju.edu.cn>
Signed-off-by: Borislav Petkov <bp@suse.de>
Link: https://lkml.kernel.org/r/20200826121437.31606-1-dinghao.liu@zju.edu.cn
a subsequent load can probe the system properly; by Shiju Jose.
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Merge tag 'edac_urgent_for_v5.9_rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/ras/ras
Pull EDAC fix from Borislav Petkov:
"A fix to properly clear ghes_edac driver state on driver remove so
that a subsequent load can probe the system properly (Shiju Jose)"
* tag 'edac_urgent_for_v5.9_rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/ras/ras:
EDAC/ghes: Fix NULL pointer dereference in ghes_edac_register()
After
b9cae27728d1 ("EDAC/ghes: Scan the system once on driver init")
and with CONFIG_DEBUG_TEST_DRIVER_REMOVE enabled, ghes_hw.dimms becomes
a NULL pointer after the second ->probe() (aka ghes_edac_register())
which the config option causes to be called.
This happens because the static variable which holds down whether
the system has been scanned already, doesn't get reset in
ghes_edac_unregister(). Then, on the second probe, ghes_scan_system()
doesn't get to enumerate the DIMMs, leading to ghes_hw.dimms remaining
NULL.
Clear the variable and rename it to something more descriptive so that a
second probe succeeds.
[ bp: Rewrite commit message. ]
Fixes: b9cae27728d1 ("EDAC/ghes: Scan the system once on driver init")
Suggested-by: Borislav Petkov <bp@suse.de>
Signed-off-by: Shiju Jose <shiju.jose@huawei.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Link: https://lkml.kernel.org/r/20200827140450.1620-1-shiju.jose@huawei.com
The Extended Error Code Bitmap (xec_bitmap) for a Scalable MCA bank type
was intended to be used by the kernel to filter out invalid error codes
on a system. However, this is unnecessary after a few product releases
because the hardware will only report valid error codes. Thus, there's
no need for it with future systems.
Remove the xec_bitmap field and all references to it.
Signed-off-by: Yazen Ghannam <yazen.ghannam@amd.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Link: https://lkml.kernel.org/r/20200720145353.43924-1-Yazen.Ghannam@amd.com
IA32_MCG_STATUS.RIPV indicates whether the return RIP value pushed onto
the stack as part of machine check delivery is valid or not.
Various drivers copied a code fragment that uses the RIPV bit to
determine the severity of the error as either HW_EVENT_ERR_UNCORRECTED
or HW_EVENT_ERR_FATAL, but this check is reversed (marking errors where
RIPV is set as "FATAL").
Reverse the tests so that the error is marked fatal when RIPV is not set.
Reported-by: Gabriele Paoloni <gabriele.paoloni@intel.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Cc: <stable@vger.kernel.org>
Link: https://lkml.kernel.org/r/20200707194324.14884-1-tony.luck@intel.com
Symbol 'lmc_dfs_ents' is not used outside of thunderx_edac.c, so
make it static:
drivers/edac/thunderx_edac.c:457:22: warning:
symbol 'lmc_dfs_ents' was not declared. Should it be static?
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Acked-by: Robert Richter <rrichter@marvell.com>
Link: https://lkml.kernel.org/r/20200714142308.46612-1-weiyongjun1@huawei.com
The Amazon's Annapurna Labs Memory Controller EDAC supports ECC capability
for error detection and correction (Single bit error correction, Double
detection). This driver introduces EDAC driver for that capability.
[ bp: Remove "EDAC" string from Kconfig tristate as it is redundant. ]
Signed-off-by: Talel Shenhar <talel@amazon.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Reviewed-by: James Morse <james.morse@arm.com>
Link: https://lkml.kernel.org/r/20200816185551.19108-3-talel@amazon.com
A few existing MCA bank types will have new error types in future SMCA
systems.
Add the descriptions for the new error types.
Signed-off-by: Yazen Ghannam <yazen.ghannam@amd.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Link: https://lkml.kernel.org/r/20200708153515.1911642-1-Yazen.Ghannam@amd.com
Rationale:
Reduces attack surface on kernel devs opening the links for MITM
as HTTPS traffic is much harder to manipulate.
Deterministic algorithm:
For each file:
If not .svg:
For each line:
If doesn't contain `\bxmlns\b`:
For each link, `\bhttp://[^# \t\r\n]*(?:\w|/)`:
If neither `\bgnu\.org/license`, nor `\bmozilla\.org/MPL\b`:
If both the HTTP and HTTPS versions
return 200 OK and serve the same content:
Replace HTTP with HTTPS.
[ bp: Merge all EDAC patches into a single one. ]
Signed-off-by: Alexander A. Klimov <grandmaster@al2klimov.de>
Signed-off-by: Borislav Petkov <bp@suse.de>
Acked-by: Tero Kristo <t-kristo@ti.com> # ti_edac
Link: https://lkml.kernel.org/r/20200708113546.14135-1-grandmaster@al2klimov.de
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Merge tag 'edac_updates_for_5.9_pt2' of git://git.kernel.org/pub/scm/linux/kernel/git/ras/ras
Pull edac fix from Tony Luck:
"Fix for the ie31200 driver that missed the first pull"
* tag 'edac_updates_for_5.9_pt2' of git://git.kernel.org/pub/scm/linux/kernel/git/ras/ras:
EDAC/ie31200: Fallback if host bridge device is already initialized
The Intel uncore driver may claim some of the pci ids from ie31200 which
means that the ie31200 edac driver will not initialize them as part of
pci_register_driver().
Let's add a fallback for this case to 'pci_get_device()' to get a
reference on the device such that it can still be configured. This is
similar in approach to other edac drivers.
Signed-off-by: Jason Baron <jbaron@akamai.com>
Cc: Borislav Petkov <bp@suse.de>
Cc: Mauro Carvalho Chehab <mchehab@kernel.org>
Cc: linux-edac <linux-edac@vger.kernel.org>
Signed-off-by: Tony Luck <tony.luck@intel.com>
Link: https://lore.kernel.org/r/1594923911-10885-1-git-send-email-jbaron@akamai.com
e370f886fefc ("EDAC: Remove edac_get_dimm_by_index()")
b9cae27728d1 ("EDAC/ghes: Scan the system once on driver init")
b001694d60fe ("EDAC/ghes: Remove unused members of struct ghes_edac_pvt, rename it to ghes_pvt")
cb51a371d08e ("EDAC/ghes: Setup DIMM label from DMI and use it in error reports")
8807e1559749 ("EDAC, {skx,i10nm}: Use CPU stepping macro to pass configurations")
e9ff6636d3f9 ("EDAC/mc: Call edac_inc_ue_error() before panic")
30bf38e4341b ("EDAC, pnd2: Set MCE_PRIO_EDAC priority for pnd2_mce_dec notifier")
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Merge tag 'edac_updates_for_5.9' of git://git.kernel.org/pub/scm/linux/kernel/git/ras/ras
Pull EDAC updates from Tony Luck:
"Boris is on vacation and aske me to send you the EDAC changes"
* tag 'edac_updates_for_5.9' of git://git.kernel.org/pub/scm/linux/kernel/git/ras/ras:
EDAC: Fix reference count leaks
EDAC: Remove edac_get_dimm_by_index()
EDAC/ghes: Scan the system once on driver init
EDAC/ghes: Remove unused members of struct ghes_edac_pvt, rename it to ghes_pvt
EDAC/ghes: Setup DIMM label from DMI and use it in error reports
EDAC, {skx,i10nm}: Use CPU stepping macro to pass configurations
EDAC/mc: Call edac_inc_ue_error() before panic
EDAC, pnd2: Set MCE_PRIO_EDAC priority for pnd2_mce_dec notifier
- Print the PPIN field on CPUs that fill them out
- Fix an MCE injection bug
- Simplify a kzalloc in dev_mcelog_init_device()
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'ras-core-2020-08-03' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 RAS updates from Ingo Molnar:
"Boris is on vacation and he asked us to send you the pending RAS bits:
- Print the PPIN field on CPUs that fill them out
- Fix an MCE injection bug
- Simplify a kzalloc in dev_mcelog_init_device()"
* tag 'ras-core-2020-08-03' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/mce, EDAC/mce_amd: Print PPIN in machine check records
x86/mce/dev-mcelog: Use struct_size() helper in kzalloc()
x86/mce/inject: Fix a wrong assignment of i_mce.status
Commit:
da92110dfdfa ("EDAC, amd64_edac: Extend scrub rate support to F15hM60h")
added support for F15h, model 0x60 CPUs but in doing so, missed to read
back SCRCTRL PCI config register on F15h CPUs which are *not* model
0x60. Add that read so that doing
$ cat /sys/devices/system/edac/mc/mc0/sdram_scrub_rate
can show the previously set DRAM scrub rate.
Fixes: da92110dfdfa ("EDAC, amd64_edac: Extend scrub rate support to F15hM60h")
Reported-by: Anders Andersson <pipatron@gmail.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Cc: <stable@vger.kernel.org> #v4.4..
Link: https://lkml.kernel.org/r/CAKkunMbNWppx_i6xSdDHLseA2QQmGJqj_crY=NF-GZML5np4Vw@mail.gmail.com
When kobject_init_and_add() returns an error, it should be handled
because kobject_init_and_add() takes a reference even when it fails. If
this function returns an error, kobject_put() must be called to properly
clean up the memory associated with the object.
Therefore, replace calling kfree() and call kobject_put() and add a
missing kobject_put() in the edac_device_register_sysfs_main_kobj()
error path.
[ bp: Massage and merge into a single patch. ]
Fixes: b2ed215a3338 ("Kobject: change drivers/edac to use kobject_init_and_add")
Signed-off-by: Qiushi Wu <wu000273@umn.edu>
Signed-off-by: Borislav Petkov <bp@suse.de>
Link: https://lkml.kernel.org/r/20200528202238.18078-1-wu000273@umn.edu
Link: https://lkml.kernel.org/r/20200528203526.20908-1-wu000273@umn.edu
