December 2018 - Linux-stable-mirror

[merged] mm-memory_hotplug-initialize-struct-pages-for-the-full-memory-section.patch removed from -mm tree

by akpm＠linux-foundation.org

The patch titled Subject: mm, memory_hotplug: initialize struct pages for the full memory section has been removed from the -mm tree. Its filename was mm-memory_hotplug-initialize-struct-pages-for-the-full-memory-section.patch This patch was dropped because it was merged into mainline or a subsystem tree ------------------------------------------------------ From: Mikhail Zaslonko <zaslonko(a)linux.ibm.com> Subject: mm, memory_hotplug: initialize struct pages for the full memory section If memory end is not aligned with the sparse memory section boundary, the mapping of such a section is only partly initialized. This may lead to VM_BUG_ON due to uninitialized struct page access from is_mem_section_removable() or test_pages_in_a_zone() function triggered by memory_hotplug sysfs handlers: Here are the the panic examples: CONFIG_DEBUG_VM=y CONFIG_DEBUG_VM_PGFLAGS=y kernel parameter mem=2050M -------------------------- page:000003d082008000 is uninitialized and poisoned page dumped because: VM_BUG_ON_PAGE(PagePoisoned(p)) Call Trace: ([<0000000000385b26>] test_pages_in_a_zone+0xde/0x160) [<00000000008f15c4>] show_valid_zones+0x5c/0x190 [<00000000008cf9c4>] dev_attr_show+0x34/0x70 [<0000000000463ad0>] sysfs_kf_seq_show+0xc8/0x148 [<00000000003e4194>] seq_read+0x204/0x480 [<00000000003b53ea>] __vfs_read+0x32/0x178 [<00000000003b55b2>] vfs_read+0x82/0x138 [<00000000003b5be2>] ksys_read+0x5a/0xb0 [<0000000000b86ba0>] system_call+0xdc/0x2d8 Last Breaking-Event-Address: [<0000000000385b26>] test_pages_in_a_zone+0xde/0x160 Kernel panic - not syncing: Fatal exception: panic_on_oops kernel parameter mem=3075M -------------------------- page:000003d08300c000 is uninitialized and poisoned page dumped because: VM_BUG_ON_PAGE(PagePoisoned(p)) Call Trace: ([<000000000038596c>] is_mem_section_removable+0xb4/0x190) [<00000000008f12fa>] show_mem_removable+0x9a/0xd8 [<00000000008cf9c4>] dev_attr_show+0x34/0x70 [<0000000000463ad0>] sysfs_kf_seq_show+0xc8/0x148 [<00000000003e4194>] seq_read+0x204/0x480 [<00000000003b53ea>] __vfs_read+0x32/0x178 [<00000000003b55b2>] vfs_read+0x82/0x138 [<00000000003b5be2>] ksys_read+0x5a/0xb0 [<0000000000b86ba0>] system_call+0xdc/0x2d8 Last Breaking-Event-Address: [<000000000038596c>] is_mem_section_removable+0xb4/0x190 Kernel panic - not syncing: Fatal exception: panic_on_oops Fix the problem by initializing the last memory section of each zone in memmap_init_zone() till the very end, even if it goes beyond the zone end. Michal said: : This has alwways been problem AFAIU. It just went unnoticed because we : have zeroed memmaps during allocation before f7f99100d8d9 ("mm: stop : zeroing memory during allocation in vmemmap") and so the above test : would simply skip these ranges as belonging to zone 0 or provided a : garbage. : : So I guess we do care for post f7f99100d8d9 kernels mostly and : therefore Fixes: f7f99100d8d9 ("mm: stop zeroing memory during : allocation in vmemmap") Link: http://lkml.kernel.org/r/20181212172712.34019-2-zaslonko@linux.ibm.com Fixes: f7f99100d8d9 ("mm: stop zeroing memory during allocation in vmemmap") Signed-off-by: Mikhail Zaslonko <zaslonko(a)linux.ibm.com> Reviewed-by: Gerald Schaefer <gerald.schaefer(a)de.ibm.com> Suggested-by: Michal Hocko <mhocko(a)kernel.org> Acked-by: Michal Hocko <mhocko(a)suse.com> Reported-by: Mikhail Gavrilov <mikhail.v.gavrilov(a)gmail.com> Tested-by: Mikhail Gavrilov <mikhail.v.gavrilov(a)gmail.com> Cc: Dave Hansen <dave.hansen(a)intel.com> Cc: Alexander Duyck <alexander.h.duyck(a)linux.intel.com> Cc: Pasha Tatashin <Pavel.Tatashin(a)microsoft.com> Cc: Martin Schwidefsky <schwidefsky(a)de.ibm.com> Cc: Heiko Carstens <heiko.carstens(a)de.ibm.com> Cc: <stable(a)vger.kernel.org> Signed-off-by: Andrew Morton <akpm(a)linux-foundation.org> --- mm/page_alloc.c | 12 ++++++++++++ 1 file changed, 12 insertions(+) --- a/mm/page_alloc.c~mm-memory_hotplug-initialize-struct-pages-for-the-full-memory-section +++ a/mm/page_alloc.c @@ -5542,6 +5542,18 @@ void __meminit memmap_init_zone(unsigned cond_resched(); } } +#ifdef CONFIG_SPARSEMEM + /* + * If the zone does not span the rest of the section then + * we should at least initialize those pages. Otherwise we + * could blow up on a poisoned page in some paths which depend + * on full sections being initialized (e.g. memory hotplug). + */ + while (end_pfn % PAGES_PER_SECTION) { + __init_single_page(pfn_to_page(end_pfn), end_pfn, zone, nid); + end_pfn++; + } +#endif } #ifdef CONFIG_ZONE_DEVICE _ Patches currently in -mm which might be from zaslonko(a)linux.ibm.com are

6 years

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stable-rc/linux-4.19.y boot: 93 boots: 0 failed, 92 passed with 1 offline (v4.19.11-68-g2a7cb228d29c)

by kernelci.org bot

stable-rc/linux-4.19.y boot: 93 boots: 0 failed, 92 passed with 1 offline (v4.19.11-68-g2a7cb228d29c) Full Boot Summary: https://kernelci.org/boot/all/job/stable-rc/branch/linux-4.19.y/kernel/v4.1… Full Build Summary: https://kernelci.org/build/stable-rc/branch/linux-4.19.y/kernel/v4.19.11-68… Tree: stable-rc Branch: linux-4.19.y Git Describe: v4.19.11-68-g2a7cb228d29c Git Commit: 2a7cb228d29c3882c1414c10a44c5f3f59bfa44d Git URL: http://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git Tested: 55 unique boards, 21 SoC families, 12 builds out of 202 Offline Platforms: arm: multi_v7_defconfig: stih410-b2120: 1 offline lab --- For more info write to <info(a)kernelci.org>

6 years

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stable-rc/linux-4.9.y boot: 87 boots: 0 failed, 86 passed with 1 offline (v4.9.146-62-gbbfc30f29cb3)

by kernelci.org bot

stable-rc/linux-4.9.y boot: 87 boots: 0 failed, 86 passed with 1 offline (v4.9.146-62-gbbfc30f29cb3) Full Boot Summary: https://kernelci.org/boot/all/job/stable-rc/branch/linux-4.9.y/kernel/v4.9.… Full Build Summary: https://kernelci.org/build/stable-rc/branch/linux-4.9.y/kernel/v4.9.146-62-… Tree: stable-rc Branch: linux-4.9.y Git Describe: v4.9.146-62-gbbfc30f29cb3 Git Commit: bbfc30f29cb328111fec12975ded8223ecc8e1a5 Git URL: http://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git Tested: 46 unique boards, 20 SoC families, 13 builds out of 193 Offline Platforms: arm: multi_v7_defconfig: stih410-b2120: 1 offline lab --- For more info write to <info(a)kernelci.org>

6 years

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stable-rc/linux-4.4.y boot: 79 boots: 1 failed, 76 passed with 1 offline, 1 untried/unknown (v4.4.168-41-gba0da581b466)

by kernelci.org bot

stable-rc/linux-4.4.y boot: 79 boots: 1 failed, 76 passed with 1 offline, 1 untried/unknown (v4.4.168-41-gba0da581b466) Full Boot Summary: https://kernelci.org/boot/all/job/stable-rc/branch/linux-4.4.y/kernel/v4.4.… Full Build Summary: https://kernelci.org/build/stable-rc/branch/linux-4.4.y/kernel/v4.4.168-41-… Tree: stable-rc Branch: linux-4.4.y Git Describe: v4.4.168-41-gba0da581b466 Git Commit: ba0da581b466dcd333eeb326919a698116926258 Git URL: http://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git Tested: 40 unique boards, 19 SoC families, 12 builds out of 187 Boot Failure Detected: arm64: defconfig qcom-qdf2400: 1 failed lab Offline Platforms: arm: multi_v7_defconfig: stih410-b2120: 1 offline lab --- For more info write to <info(a)kernelci.org>

6 years

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[PATCH AUTOSEL 3.18 01/12] powerpc: Fix COFF zImage booting on old powermacs

by Sasha Levin

From: Paul Mackerras <paulus(a)ozlabs.org> [ Upstream commit 5564597d51c8ff5b88d95c76255e18b13b760879 ] Commit 6975a783d7b4 ("powerpc/boot: Allow building the zImage wrapper as a relocatable ET_DYN", 2011-04-12) changed the procedure descriptor at the start of crt0.S to have a hard-coded start address of 0x500000 rather than a reference to _zimage_start, presumably because having a reference to a symbol introduced a relocation which is awkward to handle in a position-independent executable. Unfortunately, what is at 0x500000 in the COFF image is not the first instruction, but the procedure descriptor itself, that is, a word containing 0x500000, which is not a valid instruction. Hence, booting a COFF zImage results in a "DEFAULT CATCH!, code=FFF00700" message from Open Firmware. This fixes the problem by (a) putting the procedure descriptor in the data section and (b) adding a branch to _zimage_start as the first instruction in the program. Fixes: 6975a783d7b4 ("powerpc/boot: Allow building the zImage wrapper as a relocatable ET_DYN") Signed-off-by: Paul Mackerras <paulus(a)ozlabs.org> Signed-off-by: Michael Ellerman <mpe(a)ellerman.id.au> Signed-off-by: Sasha Levin <sashal(a)kernel.org> --- arch/powerpc/boot/crt0.S | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/arch/powerpc/boot/crt0.S b/arch/powerpc/boot/crt0.S index 8539ac93b0de..dbb06588b594 100644 --- a/arch/powerpc/boot/crt0.S +++ b/arch/powerpc/boot/crt0.S @@ -15,7 +15,7 @@ RELA = 7 RELACOUNT = 0x6ffffff9 - .text + .data /* A procedure descriptor used when booting this as a COFF file. * When making COFF, this comes first in the link and we're * linked at 0x500000. @@ -23,6 +23,8 @@ RELACOUNT = 0x6ffffff9 .globl _zimage_start_opd _zimage_start_opd: .long 0x500000, 0, 0, 0 + .text + b _zimage_start #ifdef __powerpc64__ .balign 8 -- 2.19.1

6 years

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[PATCH AUTOSEL 4.4 01/21] powerpc: Fix COFF zImage booting on old powermacs

by Sasha Levin

From: Paul Mackerras <paulus(a)ozlabs.org> [ Upstream commit 5564597d51c8ff5b88d95c76255e18b13b760879 ] Commit 6975a783d7b4 ("powerpc/boot: Allow building the zImage wrapper as a relocatable ET_DYN", 2011-04-12) changed the procedure descriptor at the start of crt0.S to have a hard-coded start address of 0x500000 rather than a reference to _zimage_start, presumably because having a reference to a symbol introduced a relocation which is awkward to handle in a position-independent executable. Unfortunately, what is at 0x500000 in the COFF image is not the first instruction, but the procedure descriptor itself, that is, a word containing 0x500000, which is not a valid instruction. Hence, booting a COFF zImage results in a "DEFAULT CATCH!, code=FFF00700" message from Open Firmware. This fixes the problem by (a) putting the procedure descriptor in the data section and (b) adding a branch to _zimage_start as the first instruction in the program. Fixes: 6975a783d7b4 ("powerpc/boot: Allow building the zImage wrapper as a relocatable ET_DYN") Signed-off-by: Paul Mackerras <paulus(a)ozlabs.org> Signed-off-by: Michael Ellerman <mpe(a)ellerman.id.au> Signed-off-by: Sasha Levin <sashal(a)kernel.org> --- arch/powerpc/boot/crt0.S | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/arch/powerpc/boot/crt0.S b/arch/powerpc/boot/crt0.S index 5c2199857aa8..a3550e8f1a77 100644 --- a/arch/powerpc/boot/crt0.S +++ b/arch/powerpc/boot/crt0.S @@ -15,7 +15,7 @@ RELA = 7 RELACOUNT = 0x6ffffff9 - .text + .data /* A procedure descriptor used when booting this as a COFF file. * When making COFF, this comes first in the link and we're * linked at 0x500000. @@ -23,6 +23,8 @@ RELACOUNT = 0x6ffffff9 .globl _zimage_start_opd _zimage_start_opd: .long 0x500000, 0, 0, 0 + .text + b _zimage_start #ifdef __powerpc64__ .balign 8 -- 2.19.1

6 years

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PASS: Test report for kernel 4.19.12.skt+ (linux-stable-rc)

by CKI

Hello, We ran automated tests on a recent commit from this kernel tree: Kernel repo: git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git Commit: 2a7cb228d29c Linux 4.19.12 The results of these automated tests are provided below. Overall result: PASSED Patch merge: OK Compile: OK Kernel tests: OK Please reply to this email if you have any questions about the tests that we ran or if you have any suggestions on how to make future tests more effective. ,-. ,-. ( C ) ( K ) Continuous `-',-.`-' Kernel ( I ) Integration `-' ______________________________________________________________________________ Compile testing --------------- We compiled the kernel for 4 architectures: s390x: make options: make INSTALL_MOD_STRIP=1 -j64 targz-pkg -j64 configuration: https://artifacts.cki-project.org/builds/s390x/2a7cb228d29c3882c1414c10a44c… powerpc64le: make options: make INSTALL_MOD_STRIP=1 -j64 targz-pkg -j64 configuration: https://artifacts.cki-project.org/builds/ppc64le/2a7cb228d29c3882c1414c10a4… aarch64: make options: make INSTALL_MOD_STRIP=1 -j64 targz-pkg -j64 configuration: https://artifacts.cki-project.org/builds/aarch64/2a7cb228d29c3882c1414c10a4… x86_64: make options: make INSTALL_MOD_STRIP=1 -j64 targz-pkg -j64 configuration: https://artifacts.cki-project.org/builds/x86_64/2a7cb228d29c3882c1414c10a44… Hardware testing ---------------- We booted each kernel and ran the following tests: s390: Boot test - URL: https://github.com/CKI-project/tests-beaker/archive/master.zip#distribution… /distribution/command LTP lite - release 20180926 - URL: https://github.com/CKI-project/tests-beaker/archive/master.zip#distribution… NFS Connectathon - URL: https://github.com/CKI-project/tests-beaker/archive/master.zip#filesystems/… Networking route: pmtu - URL: https://github.com/CKI-project/tests-beaker/archive/master.zip#/networking/… AMTU (Abstract Machine Test Utility) - URL: https://github.com/CKI-project/tests-beaker/archive/master.zip#misc/amtu powerpc: Boot test - URL: https://github.com/CKI-project/tests-beaker/archive/master.zip#distribution… /distribution/command LTP lite - release 20180926 - URL: https://github.com/CKI-project/tests-beaker/archive/master.zip#distribution… NFS Connectathon - URL: https://github.com/CKI-project/tests-beaker/archive/master.zip#filesystems/… xfstests: ext4 - URL: https://github.com/CKI-project/tests-beaker/archive/master.zip#/filesystems… xfstests: xfs - URL: https://github.com/CKI-project/tests-beaker/archive/master.zip#/filesystems… Networking route: pmtu - URL: https://github.com/CKI-project/tests-beaker/archive/master.zip#/networking/… AMTU (Abstract Machine Test Utility) - URL: https://github.com/CKI-project/tests-beaker/archive/master.zip#misc/amtu Usex - version 1.9-29 - URL: https://github.com/CKI-project/tests-beaker/archive/master.zip#standards/us… arm64: Boot test - URL: https://github.com/CKI-project/tests-beaker/archive/master.zip#distribution… /distribution/command LTP lite - release 20180926 - URL: https://github.com/CKI-project/tests-beaker/archive/master.zip#distribution… NFS Connectathon - URL: https://github.com/CKI-project/tests-beaker/archive/master.zip#filesystems/… xfstests: ext4 - URL: https://github.com/CKI-project/tests-beaker/archive/master.zip#/filesystems… xfstests: xfs - URL: https://github.com/CKI-project/tests-beaker/archive/master.zip#/filesystems… Networking route: pmtu - URL: https://github.com/CKI-project/tests-beaker/archive/master.zip#/networking/… AMTU (Abstract Machine Test Utility) - URL: https://github.com/CKI-project/tests-beaker/archive/master.zip#misc/amtu Usex - version 1.9-29 - URL: https://github.com/CKI-project/tests-beaker/archive/master.zip#standards/us… x86_64: Boot test - URL: https://github.com/CKI-project/tests-beaker/archive/master.zip#distribution… /distribution/command LTP lite - release 20180926 - URL: https://github.com/CKI-project/tests-beaker/archive/master.zip#distribution… NFS Connectathon - URL: https://github.com/CKI-project/tests-beaker/archive/master.zip#filesystems/… xfstests: ext4 - URL: https://github.com/CKI-project/tests-beaker/archive/master.zip#/filesystems… xfstests: xfs - URL: https://github.com/CKI-project/tests-beaker/archive/master.zip#/filesystems… Networking route: pmtu - URL: https://github.com/CKI-project/tests-beaker/archive/master.zip#/networking/… AMTU (Abstract Machine Test Utility) - URL: https://github.com/CKI-project/tests-beaker/archive/master.zip#misc/amtu Usex - version 1.9-29 - URL: https://github.com/CKI-project/tests-beaker/archive/master.zip#standards/us…

6 years

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stable-rc/linux-4.14.y boot: 97 boots: 2 failed, 94 passed with 1 offline (v4.14.89-73-g592f5569e184)

by kernelci.org bot

stable-rc/linux-4.14.y boot: 97 boots: 2 failed, 94 passed with 1 offline (v4.14.89-73-g592f5569e184) Full Boot Summary: https://kernelci.org/boot/all/job/stable-rc/branch/linux-4.14.y/kernel/v4.1… Full Build Summary: https://kernelci.org/build/stable-rc/branch/linux-4.14.y/kernel/v4.14.89-73… Tree: stable-rc Branch: linux-4.14.y Git Describe: v4.14.89-73-g592f5569e184 Git Commit: 592f5569e18471c07208f74540f4e0f646b226f7 Git URL: http://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git Tested: 56 unique boards, 21 SoC families, 12 builds out of 197 Boot Failures Detected: arm64: defconfig meson-gxl-s905x-libretech-cc: 1 failed lab rk3399-firefly: 1 failed lab Offline Platforms: arm: multi_v7_defconfig: stih410-b2120: 1 offline lab --- For more info write to <info(a)kernelci.org>

6 years

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[PATCH AUTOSEL 4.9 01/35] pinctrl: meson: fix pull enable register calculation

by Sasha Levin

From: Jerome Brunet <jbrunet(a)baylibre.com> [ Upstream commit 614b1868a125a0ba24be08f3a7fa832ddcde6bca ] We just changed the code so we apply bias disable on the correct register but forgot to align the register calculation. The result is that we apply the change on the correct register, but possibly at the incorrect offset/bit This went undetected because offsets tends to be the same between REG_PULL and REG_PULLEN for a given pin the EE controller. This is not true for the AO controller. Fixes: e39f9dd8206a ("pinctrl: meson: fix pinconf bias disable") Signed-off-by: Jerome Brunet <jbrunet(a)baylibre.com> Acked-by: Neil Armstrong <narmstrong(a)baylibre.com> Signed-off-by: Linus Walleij <linus.walleij(a)linaro.org> Signed-off-by: Sasha Levin <sashal(a)kernel.org> --- drivers/pinctrl/meson/pinctrl-meson.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/pinctrl/meson/pinctrl-meson.c b/drivers/pinctrl/meson/pinctrl-meson.c index df61a71420b1..8e73641bd823 100644 --- a/drivers/pinctrl/meson/pinctrl-meson.c +++ b/drivers/pinctrl/meson/pinctrl-meson.c @@ -274,7 +274,8 @@ static int meson_pinconf_set(struct pinctrl_dev *pcdev, unsigned int pin, case PIN_CONFIG_BIAS_DISABLE: dev_dbg(pc->dev, "pin %u: disable bias\n", pin); - meson_calc_reg_and_bit(bank, pin, REG_PULL, &reg, &bit); + meson_calc_reg_and_bit(bank, pin, REG_PULLEN, &reg, + &bit); ret = regmap_update_bits(pc->reg_pullen, reg, BIT(bit), 0); if (ret) -- 2.19.1

6 years

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[PATCH AUTOSEL 4.14 01/59] pinctrl: meson: fix pull enable register calculation

by Sasha Levin

From: Jerome Brunet <jbrunet(a)baylibre.com> [ Upstream commit 614b1868a125a0ba24be08f3a7fa832ddcde6bca ] We just changed the code so we apply bias disable on the correct register but forgot to align the register calculation. The result is that we apply the change on the correct register, but possibly at the incorrect offset/bit This went undetected because offsets tends to be the same between REG_PULL and REG_PULLEN for a given pin the EE controller. This is not true for the AO controller. Fixes: e39f9dd8206a ("pinctrl: meson: fix pinconf bias disable") Signed-off-by: Jerome Brunet <jbrunet(a)baylibre.com> Acked-by: Neil Armstrong <narmstrong(a)baylibre.com> Signed-off-by: Linus Walleij <linus.walleij(a)linaro.org> Signed-off-by: Sasha Levin <sashal(a)kernel.org> --- drivers/pinctrl/meson/pinctrl-meson.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/pinctrl/meson/pinctrl-meson.c b/drivers/pinctrl/meson/pinctrl-meson.c index 6c43322dbb97..2998941fdeca 100644 --- a/drivers/pinctrl/meson/pinctrl-meson.c +++ b/drivers/pinctrl/meson/pinctrl-meson.c @@ -272,7 +272,8 @@ static int meson_pinconf_set(struct pinctrl_dev *pcdev, unsigned int pin, case PIN_CONFIG_BIAS_DISABLE: dev_dbg(pc->dev, "pin %u: disable bias\n", pin); - meson_calc_reg_and_bit(bank, pin, REG_PULL, &reg, &bit); + meson_calc_reg_and_bit(bank, pin, REG_PULLEN, &reg, + &bit); ret = regmap_update_bits(pc->reg_pullen, reg, BIT(bit), 0); if (ret) -- 2.19.1

6 years

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Linux-stable-mirror December 2018