lwn.git/drivers/edac, branch master

Merge tag 'ras_core_for_v7.1_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2026-04-14T22:32:39+00:00

Pull RAS updates from Borislav Petkov: - Add new AMD MCA bank names and types to the MCA code, preceded by a clean up of the relevant places to have them more developer-friendly (read: sort them alphanumerically and clean up comments) such that adding new banks is easy * tag 'ras_core_for_v7.1_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/mce, EDAC/mce_amd: Add new SMCA bank types x86/mce, EDAC/mce_amd: Update CS bank type naming x86/mce, EDAC/mce_amd: Reorder SMCA bank type enums

Merge tag 'edac_updates_for_v7.1_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/ras/ras

2026-04-14T22:29:55+00:00

Pull EDAC updates from Borislav Petkov: - amd64_edac: Add support for AMD Zen 3 (family 19h, models 40h–4fh) - i10nm: Add GNR error information decoder support as an alternative to the firmware decoder - versalnet: Restructure the init/teardown logic for correct and more readable error handling. Also, fix two memory leaks and a resource leak - Convert several internal structs to use bounded flex arrays, enabling the kernel's runtime checker to catch out-of-bounds memory accesses - Mark various sysfs attribute tables read-only, preventing accidental modification at runtime - The usual fixes and cleanups across the subsystem * tag 'edac_updates_for_v7.1_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/ras/ras: EDAC/mc: Use kzalloc_flex() EDAC/ie31200: Make rpl_s_cfg static EDAC/i10nm: Fix spelling mistake "readd" -> "read" EDAC/versalnet: Fix device_node leak in mc_probe() EDAC/versalnet: Fix memory leak in remove and probe error paths EDAC/amd64: Add support for family 19h, models 40h-4fh EDAC/i10nm: Add driver decoder for Granite Rapids server EDAC/sb: Use kzalloc_flex() EDAC/i7core: Use kzalloc_flex() EDAC/mpc85xx: Constify device sysfs attributes EDAC/device: Allow addition of const sysfs attributes EDAC/pci_sysfs: Constify instance sysfs attributes EDAC/device: Constify info sysfs attributes EDAC/device: Drop unnecessary and dangerous casts of attributes EDAC/device: Drop unused macro to_edacdev_attr() EDAC/altera: Drop unused field eccmgr_sysfs_attr EDAC/versalnet: Refactor memory controller initialization and cleanup

Merge remote-tracking branches 'ras/edac-misc' and 'ras/edac-drivers' into edac-updates

2026-04-13T09:43:52+00:00

* ras/edac-misc: EDAC/mc: Use kzalloc_flex() EDAC/ie31200: Make rpl_s_cfg static EDAC/mpc85xx: Constify device sysfs attributes EDAC/device: Allow addition of const sysfs attributes EDAC/pci_sysfs: Constify instance sysfs attributes EDAC/device: Constify info sysfs attributes EDAC/device: Drop unnecessary and dangerous casts of attributes EDAC/device: Drop unused macro to_edacdev_attr() EDAC/altera: Drop unused field eccmgr_sysfs_attr * ras/edac-drivers: EDAC/i10nm: Fix spelling mistake "readd" -> "read" EDAC/versalnet: Fix device_node leak in mc_probe() EDAC/versalnet: Fix memory leak in remove and probe error paths EDAC/amd64: Add support for family 19h, models 40h-4fh EDAC/i10nm: Add driver decoder for Granite Rapids server EDAC/sb: Use kzalloc_flex() EDAC/i7core: Use kzalloc_flex() EDAC/versalnet: Refactor memory controller initialization and cleanup Signed-off-by: Borislav Petkov (AMD)

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

2026-04-05T15:49:19+00:00

When the mci->pvt_info allocation in edac_mc_alloc() fails, the error path will call put_device() which will end up calling the device's release function. However, the init ordering is wrong such that device_initialize() happens *after* the failed allocation and thus the device itself and the release function pointer are not initialized yet when they're called: MCE: In-kernel MCE decoding enabled. ------------[ cut here ]------------ kobject: '(null)': is not initialized, yet kobject_put() is being called. WARNING: lib/kobject.c:734 at kobject_put, CPU#22: systemd-udevd CPU: 22 UID: 0 PID: 538 Comm: systemd-udevd Not tainted 7.0.0-rc1+ #2 PREEMPT(full) RIP: 0010:kobject_put Call Trace: edac_mc_alloc+0xbe/0xe0 [edac_core] amd64_edac_init+0x7a4/0xff0 [amd64_edac] ? __pfx_amd64_edac_init+0x10/0x10 [amd64_edac] do_one_initcall ... Reorder the calling sequence so that the device is initialized and thus the release function pointer is properly set before it can be used. This was found by Claude while reviewing another EDAC patch. Fixes: 0bbb265f7089 ("EDAC/mc: Get rid of silly one-shot struct allocation in edac_mc_alloc()") Reported-by: Claude Code:claude-opus-4.5 Signed-off-by: Borislav Petkov (AMD) Reviewed-by: Qiuxu Zhuo Cc: stable@kernel.org Link: https://patch.msgid.link/20260331121623.4871-1-bp@kernel.org

EDAC/mc: Use kzalloc_flex()

2026-03-31T17:15:21+00:00

Convert struct mem_ctl_info to use flex array and use the new flex array helpers to enable runtime bounds checking, including annotating the array length member with __counted_by() for extra runtime analysis when requested. Move memcpy() after the counter assignment so that it is initialized before the first reference to the flex array, as the new attribute requires. [ bp: Heavily massage commit message. ] Signed-off-by: Rosen Penev Signed-off-by: Borislav Petkov (AMD) Reviewed-by: Yazen Ghannam Reviewed-by: Qiuxu Zhuo Link: https://patch.msgid.link/20260327024828.7377-1-rosenp@gmail.com

EDAC/ie31200: Make rpl_s_cfg static

2026-03-27T21:20:49+00:00

The rpl_s_cfg variable is only used within this file, so mark it static, as Sparse reports: drivers/edac/ie31200_edac.c:709:19: warning: symbol 'rpl_s_cfg' was not declared. Should it be static? [ bp: Massage commit message. ] Signed-off-by: Marilene Andrade Garcia Signed-off-by: Borislav Petkov (AMD) Link: https://patch.msgid.link/f353c3aff47abd88bafc46a1c0c5eb9917e11b28.1774619301.git.marilene.agarcia@gmail.com

EDAC/i10nm: Fix spelling mistake "readd" -> "read"

2026-03-25T21:04:06+00:00

There is a spelling mistake in a i10nm_printk error message. Fix it. Signed-off-by: Colin Ian King Signed-off-by: Tony Luck Link: https://patch.msgid.link/20260325203556.1228975-1-colin.i.king@gmail.com

EDAC/versalnet: Fix device_node leak in mc_probe()

2026-03-24T14:51:50+00:00

of_parse_phandle() returns a device_node reference that must be released with of_node_put(). The original code never freed r5_core_node on any exit path, causing a memory leak. Fix this by using the automatic cleanup attribute __free(device_node) which ensures of_node_put() is called when the variable goes out of scope. Fixes: d5fe2fec6c40 ("EDAC: Add a driver for the AMD Versal NET DDR controller") Signed-off-by: Felix Gu Signed-off-by: Borislav Petkov (AMD) Reviewed-by: Shubhrajyoti Datta Cc: Link: https://patch.msgid.link/20260323-versalnet-v1-1-4ab3012635ef@gmail.com

EDAC/versalnet: Fix memory leak in remove and probe error paths

2026-03-22T18:39:34+00:00

The mcdi object allocated using kzalloc() in the setup_mcdi() is not freed in the remove path or in probe's error handling path leading to a memory leak. Fix it by freeing the allocated memory. Fixes: d5fe2fec6c40d ("EDAC: Add a driver for the AMD Versal NET DDR controller") Signed-off-by: Prasanna Kumar T S M Signed-off-by: Borislav Petkov (AMD) Cc: stable@vger.kernel.org Link: https://patch.msgid.link/20260322131139.1684716-1-ptsm@linux.microsoft.com

EDAC/amd64: Add support for family 19h, models 40h-4fh

2026-03-19T18:03:25+00:00

Add support for Ryzen 6000 Zen3-based CPUs in the V3000 AMD Embedded SoC platform which uses ECC memory and would need RAS handling of hardware errors. Co-developed-by: Ramesh Garidapuri Signed-off-by: Ramesh Garidapuri Signed-off-by: Devang Vyas Signed-off-by: Borislav Petkov (AMD) Reviewed-by: Yazen Ghannam Link: https://patch.msgid.link/20260317183453.3556588-1-devangnayanbhai.vyas@amd.com