kernel/git/stable/linux-stable.git/drivers/edac, branch linux-5.8.y

EDAC/ti: Fix handling of platform_get_irq() error

2020-10-29T09:07:14+00:00

[ Upstream commit 66077adb70a2a9e92540155b2ace33ec98299c90 ] 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 Signed-off-by: Borislav Petkov Reviewed-by: Tero Kristo Link: https://lkml.kernel.org/r/20200827070743.26628-2-krzk@kernel.org Signed-off-by: Sasha Levin

EDAC/aspeed: Fix handling of platform_get_irq() error

2020-10-29T09:07:13+00:00

[ Upstream commit afce6996943be265fa39240b67025cfcb1bcdfb1 ] 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 Signed-off-by: Borislav Petkov Reviewed-by: Stefan Schaeckeler Link: https://lkml.kernel.org/r/20200827070743.26628-1-krzk@kernel.org Signed-off-by: Sasha Levin

EDAC/i5100: Fix error handling order in i5100_init_one()

2020-10-29T09:07:13+00:00

[ Upstream commit 857a3139bd8be4f702c030c8ca06f3fd69c1741a ] 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 Signed-off-by: Borislav Petkov Link: https://lkml.kernel.org/r/20200826121437.31606-1-dinghao.liu@zju.edu.cn Signed-off-by: Sasha Levin

EDAC/ghes: Check whether the driver is on the safe list correctly

2020-10-01T15:36:24+00:00

[ Upstream commit 251c54ea26fa6029b01a76161a37a12fde5124e4 ] With CONFIG_DEBUG_TEST_DRIVER_REMOVE=y, a system would try to probe, unregister and probe again a driver. When ghes_edac is attempted to be loaded on a system which is not on the safe platforms list, ghes_edac_register() would return early. The unregister counterpart ghes_edac_unregister() would still attempt to unregister and exit early at the refcount test, leading to the refcount underflow below. In order to not do *anything* on the unregister path too, reuse the force_load parameter and check it on that path too, before fumbling with the refcount. ghes_edac: ghes_edac_register: entry ghes_edac: ghes_edac_register: return -ENODEV ------------[ cut here ]------------ refcount_t: underflow; use-after-free. WARNING: CPU: 10 PID: 1 at lib/refcount.c:28 refcount_warn_saturate+0xb9/0x100 Modules linked in: CPU: 10 PID: 1 Comm: swapper/0 Not tainted 5.9.0-rc4+ #12 Hardware name: GIGABYTE MZ01-CE1-00/MZ01-CE1-00, BIOS F02 08/29/2018 RIP: 0010:refcount_warn_saturate+0xb9/0x100 Code: 82 e8 fb 8f 4d 00 90 0f 0b 90 90 c3 80 3d 55 4c f5 00 00 75 88 c6 05 4c 4c f5 00 01 90 48 c7 c7 d0 8a 10 82 e8 d8 8f 4d 00 90 <0f> 0b 90 90 c3 80 3d 30 4c f5 00 00 0f 85 61 ff ff ff c6 05 23 4c RSP: 0018:ffffc90000037d58 EFLAGS: 00010292 RAX: 0000000000000026 RBX: ffff88840b8da000 RCX: 0000000000000000 RDX: 0000000000000001 RSI: ffffffff8216b24f RDI: 00000000ffffffff RBP: ffff88840c662e00 R08: 0000000000000001 R09: 0000000000000001 R10: 0000000000000001 R11: 0000000000000046 R12: 0000000000000000 R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff88840ee80000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000000 CR3: 0000800002211000 CR4: 00000000003506e0 Call Trace: ghes_edac_unregister ghes_remove platform_drv_remove really_probe driver_probe_device device_driver_attach __driver_attach ? device_driver_attach ? device_driver_attach bus_for_each_dev bus_add_driver driver_register ? bert_init ghes_init do_one_initcall ? rcu_read_lock_sched_held kernel_init_freeable ? rest_init kernel_init ret_from_fork ... ghes_edac: ghes_edac_unregister: FALSE, refcount: -1073741824 Signed-off-by: Borislav Petkov Link: https://lkml.kernel.org/r/20200911164950.GB19320@zn.tnic Signed-off-by: Sasha Levin

EDAC/ie31200: Fallback if host bridge device is already initialized

2020-09-03T09:29:22+00:00

[ Upstream commit 709ed1bcef12398ac1a35c149f3e582db04456c2 ] 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 Cc: Borislav Petkov Cc: Mauro Carvalho Chehab Cc: linux-edac Signed-off-by: Tony Luck Link: https://lore.kernel.org/r/1594923911-10885-1-git-send-email-jbaron@akamai.com Signed-off-by: Sasha Levin

EDAC/mc: Call edac_inc_ue_error() before panic

2020-09-03T09:29:14+00:00

[ Upstream commit e9ff6636d3f97a764487999754c0bfee9d2c231e ] By calling edac_inc_ue_error() before panic, we get a correct UE error count for core dump analysis. Signed-off-by: Zhenzhong Duan Signed-off-by: Tony Luck Link: https://lore.kernel.org/r/20200610065846.3626-2-zhenzhong.duan@gmail.com Signed-off-by: Sasha Levin

EDAC/{i7core,sb,pnd2,skx}: Fix error event severity

2020-08-26T09:49:18+00:00

commit 45bc6098a3e279d8e391d22428396687562797e2 upstream. 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 Signed-off-by: Tony Luck Signed-off-by: Borislav Petkov Cc: Link: https://lkml.kernel.org/r/20200707194324.14884-1-tony.luck@intel.com Signed-off-by: Greg Kroah-Hartman

EDAC: Fix reference count leaks

2020-08-19T06:26:05+00:00

[ Upstream commit 17ed808ad243192fb923e4e653c1338d3ba06207 ] 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 Signed-off-by: Borislav Petkov Link: https://lkml.kernel.org/r/20200528202238.18078-1-wu000273@umn.edu Link: https://lkml.kernel.org/r/20200528203526.20908-1-wu000273@umn.edu Signed-off-by: Sasha Levin

EDAC/amd64: Read back the scrub rate PCI register on F15h

2020-06-18T18:25:25+00:00

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 Signed-off-by: Borislav Petkov Cc: #v4.4.. Link: https://lkml.kernel.org/r/CAKkunMbNWppx_i6xSdDHLseA2QQmGJqj_crY=NF-GZML5np4Vw@mail.gmail.com

Merge tag 'kbuild-v5.8-2' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild

2020-06-13T20:29:16+00:00

Pull more Kbuild updates from Masahiro Yamada: - fix build rules in binderfs sample - fix build errors when Kbuild recurses to the top Makefile - covert '---help---' in Kconfig to 'help' * tag 'kbuild-v5.8-2' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: treewide: replace '---help---' in Kconfig files with 'help' kbuild: fix broken builds because of GZIP,BZIP2,LZOP variables samples: binderfs: really compile this sample and fix build issues