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stable-rc/linux-4.9.y boot: 102 boots: 1 failed, 100 passed with 1 offline (v4.9.143-103-g2eb2c353eec4)

by kernelci.org bot

stable-rc/linux-4.9.y boot: 102 boots: 1 failed, 100 passed with 1 offline (v4.9.143-103-g2eb2c353eec4) 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/v4.9.143-103… Tree: stable-rc Branch: linux-4.9.y Git Describe: v4.9.143-103-g2eb2c353eec4 Git Commit: 2eb2c353eec495008169e908951ae0eacaf1bb5b Git URL: http://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git Tested: 49 unique boards, 21 SoC families, 13 builds out of 193 Boot Regressions Detected: arm: qcom_defconfig: qcom-apq8064-cm-qs600: lab-baylibre-seattle: new failure (last pass: v4.9.143-102-gcf137e4b4373) Boot Failure Detected: arm: qcom_defconfig qcom-apq8064-cm-qs600: 1 failed lab Offline Platforms: arm: multi_v7_defconfig: stih410-b2120: 1 offline lab --- For more info write to <info(a)kernelci.org>

7 years, 1 month

+ hwpoison-memory_hotplug-allow-hwpoisoned-pages-to-be-offlined.patch added to -mm tree

by akpm＠linux-foundation.org

The patch titled Subject: hwpoison, memory_hotplug: allow hwpoisoned pages to be offlined has been added to the -mm tree. Its filename is hwpoison-memory_hotplug-allow-hwpoisoned-pages-to-be-offlined.patch This patch should soon appear at http://ozlabs.org/~akpm/mmots/broken-out/hwpoison-memory_hotplug-allow-hwpo… and later at http://ozlabs.org/~akpm/mmotm/broken-out/hwpoison-memory_hotplug-allow-hwpo… Before you just go and hit "reply", please: a) Consider who else should be cc'ed b) Prefer to cc a suitable mailing list as well c) Ideally: find the original patch on the mailing list and do a reply-to-all to that, adding suitable additional cc's *** Remember to use Documentation/process/submit-checklist.rst when testing your code *** The -mm tree is included into linux-next and is updated there every 3-4 working days ------------------------------------------------------ From: Michal Hocko <mhocko(a)suse.com> Subject: hwpoison, memory_hotplug: allow hwpoisoned pages to be offlined We have received a bug report that an injected MCE about faulty memory prevents memory offline to succeed on 4.4 base kernel. The underlying reason was that the HWPoison page has an elevated reference count and the migration keeps failing. There are two problems with that. First of all it is dubious to migrate the poisoned page because we know that accessing that memory is possible to fail. Secondly it doesn't make any sense to migrate a potentially broken content and preserve the memory corruption over to a new location. Oscar has found out that 4.4 and the current upstream kernels behave slightly differently with his simply testcase === int main(void) { int ret; int i; int fd; char *array = malloc(4096); char *array_locked = malloc(4096); fd = open("/tmp/data", O_RDONLY); read(fd, array, 4095); for (i = 0; i < 4096; i++) array_locked[i] = 'd'; ret = mlock((void *)PAGE_ALIGN((unsigned long)array_locked), sizeof(array_locked)); if (ret) perror("mlock"); sleep (20); ret = madvise((void *)PAGE_ALIGN((unsigned long)array_locked), 4096, MADV_HWPOISON); if (ret) perror("madvise"); for (i = 0; i < 4096; i++) array_locked[i] = 'd'; return 0; } === + offline this memory. In 4.4 kernels he saw the hwpoisoned page to be returned back to the LRU list kernel: [<ffffffff81019ac9>] dump_trace+0x59/0x340 kernel: [<ffffffff81019e9a>] show_stack_log_lvl+0xea/0x170 kernel: [<ffffffff8101ac71>] show_stack+0x21/0x40 kernel: [<ffffffff8132bb90>] dump_stack+0x5c/0x7c kernel: [<ffffffff810815a1>] warn_slowpath_common+0x81/0xb0 kernel: [<ffffffff811a275c>] __pagevec_lru_add_fn+0x14c/0x160 kernel: [<ffffffff811a2eed>] pagevec_lru_move_fn+0xad/0x100 kernel: [<ffffffff811a334c>] __lru_cache_add+0x6c/0xb0 kernel: [<ffffffff81195236>] add_to_page_cache_lru+0x46/0x70 kernel: [<ffffffffa02b4373>] extent_readpages+0xc3/0x1a0 [btrfs] kernel: [<ffffffff811a16d7>] __do_page_cache_readahead+0x177/0x200 kernel: [<ffffffff811a18c8>] ondemand_readahead+0x168/0x2a0 kernel: [<ffffffff8119673f>] generic_file_read_iter+0x41f/0x660 kernel: [<ffffffff8120e50d>] __vfs_read+0xcd/0x140 kernel: [<ffffffff8120e9ea>] vfs_read+0x7a/0x120 kernel: [<ffffffff8121404b>] kernel_read+0x3b/0x50 kernel: [<ffffffff81215c80>] do_execveat_common.isra.29+0x490/0x6f0 kernel: [<ffffffff81215f08>] do_execve+0x28/0x30 kernel: [<ffffffff81095ddb>] call_usermodehelper_exec_async+0xfb/0x130 kernel: [<ffffffff8161c045>] ret_from_fork+0x55/0x80 And that latter confuses the hotremove path because an LRU page is attempted to be migrated and that fails due to an elevated reference count. It is quite possible that the reuse of the HWPoisoned page is some kind of fixed race condition but I am not really sure about that. With the upstream kernel the failure is slightly different. The page doesn't seem to have LRU bit set but isolate_movable_page simply fails and do_migrate_range simply puts all the isolated pages back to LRU and therefore no progress is made and scan_movable_pages finds same set of pages over and over again. Fix both cases by explicitly checking HWPoisoned pages before we even try to get reference on the page, try to unmap it if it is still mapped. As explained by Naoya: : Hwpoison code never unmapped those for no big reason because : Ksm pages never dominate memory, so we simply didn't have strong : motivation to save the pages. Also put WARN_ON(PageLRU) in case there is a race and we can hit LRU HWPoison pages which shouldn't happen but I couldn't convince myself about that. Naoya has noted the following: : Theoretically no such gurantee, because try_to_unmap() doesn't have a : guarantee of success and then memory_failure() returns immediately : when hwpoison_user_mappings fails. : Or the following code (comes after hwpoison_user_mappings block) also impli= : es : that the target page can still have PageLRU flag. : : /* : * Torn down by someone else? : */ : if (PageLRU(p) && !PageSwapCache(p) && p->mapping =3D=3D NULL) { : action_result(pfn, MF_MSG_TRUNCATED_LRU, MF_IGNORED); : res =3D -EBUSY; : goto out; : } : : So I think it's OK to keep "if (WARN_ON(PageLRU(page)))" block in : current version of your patch. Link: http://lkml.kernel.org/r/20181206120135.14079-1-mhocko@kernel.org Signed-off-by: Michal Hocko <mhocko(a)suse.com> Reviewed-by: Oscar Salvador <osalvador(a)suse.com> Debugged-by: Oscar Salvador <osalvador(a)suse.com> Tested-by: Oscar Salvador <osalvador(a)suse.com> Acked-by: David Hildenbrand <david(a)redhat.com> Acked-by: Naoya Horiguchi <n-horiguchi(a)ah.jp.nec.com> Cc: <stable(a)vger.kernel.org> Signed-off-by: Andrew Morton <akpm(a)linux-foundation.org> --- mm/memory_hotplug.c | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) --- a/mm/memory_hotplug.c~hwpoison-memory_hotplug-allow-hwpoisoned-pages-to-be-offlined +++ a/mm/memory_hotplug.c @@ -34,6 +34,7 @@ #include <linux/hugetlb.h> #include <linux/memblock.h> #include <linux/compaction.h> +#include <linux/rmap.h> #include <asm/tlbflush.h> @@ -1343,6 +1344,21 @@ do_migrate_range(unsigned long start_pfn pfn = page_to_pfn(compound_head(page)) + hpage_nr_pages(page) - 1; + /* + * HWPoison pages have elevated reference counts so the migration would + * fail on them. It also doesn't make any sense to migrate them in the + * first place. Still try to unmap such a page in case it is still mapped + * (e.g. current hwpoison implementation doesn't unmap KSM pages but keep + * the unmap as the catch all safety net). + */ + if (PageHWPoison(page)) { + if (WARN_ON(PageLRU(page))) + isolate_lru_page(page); + if (page_mapped(page)) + try_to_unmap(page, TTU_IGNORE_MLOCK | TTU_IGNORE_ACCESS); + continue; + } + if (!get_page_unless_zero(page)) continue; /* _ Patches currently in -mm which might be from mhocko(a)suse.com are mm-print-more-information-about-mapping-in-__dump_page.patch mm-lower-the-printk-loglevel-for-__dump_page-messages.patch mm-memory_hotplug-drop-pointless-block-alignment-checks-from-__offline_pages.patch mm-memory_hotplug-print-reason-for-the-offlining-failure.patch mm-memory_hotplug-be-more-verbose-for-memory-offline-failures.patch mm-memory_hotplug-be-more-verbose-for-memory-offline-failures-update.patch mm-memory_hotplug-do-not-clear-numa_node-association-after-hot_remove.patch hwpoison-memory_hotplug-allow-hwpoisoned-pages-to-be-offlined.patch

7 years, 1 month

[PATCH 1/2] drm/amdkfd: add new vega10 pci ids

by Alex Deucher

New vega10 ids. Signed-off-by: Alex Deucher <alexander.deucher(a)amd.com> Cc: stable(a)vger.kernel.org --- drivers/gpu/drm/amd/amdkfd/kfd_device.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_device.c b/drivers/gpu/drm/amd/amdkfd/kfd_device.c index 9ed14a11afa2..b78b3c2fa9d8 100644 --- a/drivers/gpu/drm/amd/amdkfd/kfd_device.c +++ b/drivers/gpu/drm/amd/amdkfd/kfd_device.c @@ -378,7 +378,13 @@ static const struct kfd_deviceid supported_devices[] = { { 0x6864, &vega10_device_info }, /* Vega10 */ { 0x6867, &vega10_device_info }, /* Vega10 */ { 0x6868, &vega10_device_info }, /* Vega10 */ + { 0x6869, &vega10_device_info }, /* Vega10 */ + { 0x686A, &vega10_device_info }, /* Vega10 */ + { 0x686B, &vega10_device_info }, /* Vega10 */ { 0x686C, &vega10_vf_device_info }, /* Vega10 vf*/ + { 0x686D, &vega10_device_info }, /* Vega10 */ + { 0x686E, &vega10_device_info }, /* Vega10 */ + { 0x686F, &vega10_device_info }, /* Vega10 */ { 0x687F, &vega10_device_info }, /* Vega10 */ { 0x69A0, &vega12_device_info }, /* Vega12 */ { 0x69A1, &vega12_device_info }, /* Vega12 */ -- 2.13.6

7 years, 1 month

[PATCH 1/2] drm/amdgpu: add some additional vega10 pci ids

by Alex Deucher

New vega ids. Signed-off-by: Alex Deucher <alexander.deucher(a)amd.com> Cc: stable(a)vger.kernel.org --- drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c index 90f474f98b6e..e32f6f43a46b 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c @@ -873,7 +873,13 @@ static const struct pci_device_id pciidlist[] = { {0x1002, 0x6864, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CHIP_VEGA10}, {0x1002, 0x6867, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CHIP_VEGA10}, {0x1002, 0x6868, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CHIP_VEGA10}, + {0x1002, 0x6869, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CHIP_VEGA10}, + {0x1002, 0x686a, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CHIP_VEGA10}, + {0x1002, 0x686b, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CHIP_VEGA10}, {0x1002, 0x686c, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CHIP_VEGA10}, + {0x1002, 0x686d, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CHIP_VEGA10}, + {0x1002, 0x686e, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CHIP_VEGA10}, + {0x1002, 0x686f, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CHIP_VEGA10}, {0x1002, 0x687f, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CHIP_VEGA10}, /* Vega 12 */ {0x1002, 0x69A0, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CHIP_VEGA12}, -- 2.13.6

7 years, 1 month

[PATCH 4.9-stable] mm: don't warn about allocations which stall for too long

by Amit Shah

From: Tetsuo Handa <penguin-kernel(a)I-love.SAKURA.ne.jp> commit 400e22499dd92613821374c8c6c88c7225359980 upstream. Commit 63f53dea0c98 ("mm: warn about allocations which stall for too long") was a great step for reducing possibility of silent hang up problem caused by memory allocation stalls. But this commit reverts it, for it is possible to trigger OOM lockup and/or soft lockups when many threads concurrently called warn_alloc() (in order to warn about memory allocation stalls) due to current implementation of printk(), and it is difficult to obtain useful information due to limitation of synchronous warning approach. Current printk() implementation flushes all pending logs using the context of a thread which called console_unlock(). printk() should be able to flush all pending logs eventually unless somebody continues appending to printk() buffer. Since warn_alloc() started appending to printk() buffer while waiting for oom_kill_process() to make forward progress when oom_kill_process() is processing pending logs, it became possible for warn_alloc() to force oom_kill_process() loop inside printk(). As a result, warn_alloc() significantly increased possibility of preventing oom_kill_process() from making forward progress. ---------- Pseudo code start ---------- Before warn_alloc() was introduced: retry: if (mutex_trylock(&oom_lock)) { while (atomic_read(&printk_pending_logs) > 0) { atomic_dec(&printk_pending_logs); print_one_log(); } // Send SIGKILL here. mutex_unlock(&oom_lock) } goto retry; After warn_alloc() was introduced: retry: if (mutex_trylock(&oom_lock)) { while (atomic_read(&printk_pending_logs) > 0) { atomic_dec(&printk_pending_logs); print_one_log(); } // Send SIGKILL here. mutex_unlock(&oom_lock) } else if (waited_for_10seconds()) { atomic_inc(&printk_pending_logs); } goto retry; ---------- Pseudo code end ---------- Although waited_for_10seconds() becomes true once per 10 seconds, unbounded number of threads can call waited_for_10seconds() at the same time. Also, since threads doing waited_for_10seconds() keep doing almost busy loop, the thread doing print_one_log() can use little CPU resource. Therefore, this situation can be simplified like ---------- Pseudo code start ---------- retry: if (mutex_trylock(&oom_lock)) { while (atomic_read(&printk_pending_logs) > 0) { atomic_dec(&printk_pending_logs); print_one_log(); } // Send SIGKILL here. mutex_unlock(&oom_lock) } else { atomic_inc(&printk_pending_logs); } goto retry; ---------- Pseudo code end ---------- when printk() is called faster than print_one_log() can process a log. One of possible mitigation would be to introduce a new lock in order to make sure that no other series of printk() (either oom_kill_process() or warn_alloc()) can append to printk() buffer when one series of printk() (either oom_kill_process() or warn_alloc()) is already in progress. Such serialization will also help obtaining kernel messages in readable form. ---------- Pseudo code start ---------- retry: if (mutex_trylock(&oom_lock)) { mutex_lock(&oom_printk_lock); while (atomic_read(&printk_pending_logs) > 0) { atomic_dec(&printk_pending_logs); print_one_log(); } // Send SIGKILL here. mutex_unlock(&oom_printk_lock); mutex_unlock(&oom_lock) } else { if (mutex_trylock(&oom_printk_lock)) { atomic_inc(&printk_pending_logs); mutex_unlock(&oom_printk_lock); } } goto retry; ---------- Pseudo code end ---------- But this commit does not go that direction, for we don't want to introduce a new lock dependency, and we unlikely be able to obtain useful information even if we serialized oom_kill_process() and warn_alloc(). Synchronous approach is prone to unexpected results (e.g. too late [1], too frequent [2], overlooked [3]). As far as I know, warn_alloc() never helped with providing information other than "something is going wrong". I want to consider asynchronous approach which can obtain information during stalls with possibly relevant threads (e.g. the owner of oom_lock and kswapd-like threads) and serve as a trigger for actions (e.g. turn on/off tracepoints, ask libvirt daemon to take a memory dump of stalling KVM guest for diagnostic purpose). This commit temporarily loses ability to report e.g. OOM lockup due to unable to invoke the OOM killer due to !__GFP_FS allocation request. But asynchronous approach will be able to detect such situation and emit warning. Thus, let's remove warn_alloc(). [1] https://bugzilla.kernel.org/show_bug.cgi?id=192981 [2] http://lkml.kernel.org/r/CAM_iQpWuPVGc2ky8M-9yukECtS+zKjiDasNymX7rMcBjBFyM_… [3] commit db73ee0d46379922 ("mm, vmscan: do not loop on too_many_isolated for ever")) Link: http://lkml.kernel.org/r/1509017339-4802-1-git-send-email-penguin-kernel@I-… Signed-off-by: Tetsuo Handa <penguin-kernel(a)I-love.SAKURA.ne.jp> Reported-by: Cong Wang <xiyou.wangcong(a)gmail.com> Reported-by: yuwang.yuwang <yuwang.yuwang(a)alibaba-inc.com> Reported-by: Johannes Weiner <hannes(a)cmpxchg.org> Acked-by: Michal Hocko <mhocko(a)suse.com> Acked-by: Johannes Weiner <hannes(a)cmpxchg.org> Cc: Vlastimil Babka <vbabka(a)suse.cz> Cc: Mel Gorman <mgorman(a)suse.de> Cc: Dave Hansen <dave.hansen(a)intel.com> Cc: Sergey Senozhatsky <sergey.senozhatsky(a)gmail.com> Cc: Petr Mladek <pmladek(a)suse.com> Cc: Steven Rostedt <rostedt(a)goodmis.org> Signed-off-by: Andrew Morton <akpm(a)linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds(a)linux-foundation.org> [Resolved backport conflict due to missing 8225196, a8e9925, 9e80c71 and 9a67f64 in 4.9 -- all of which modified this hunk being removed.] Signed-off-by: Amit Shah <amit(a)kernel.org> --- mm/page_alloc.c | 10 ---------- 1 file changed, 10 deletions(-) diff --git a/mm/page_alloc.c b/mm/page_alloc.c index 28240ce475d6..3af727d95c17 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -3530,8 +3530,6 @@ __alloc_pages_slowpath(gfp_t gfp_mask, unsigned int order, enum compact_result compact_result; int compaction_retries; int no_progress_loops; - unsigned long alloc_start = jiffies; - unsigned int stall_timeout = 10 * HZ; unsigned int cpuset_mems_cookie; /* @@ -3704,14 +3702,6 @@ __alloc_pages_slowpath(gfp_t gfp_mask, unsigned int order, if (order > PAGE_ALLOC_COSTLY_ORDER && !(gfp_mask & __GFP_REPEAT)) goto nopage; - /* Make sure we know about allocations which stall for too long */ - if (time_after(jiffies, alloc_start + stall_timeout)) { - warn_alloc(gfp_mask, - "page allocation stalls for %ums, order:%u", - jiffies_to_msecs(jiffies-alloc_start), order); - stall_timeout += 10 * HZ; - } - if (should_reclaim_retry(gfp_mask, order, ac, alloc_flags, did_some_progress > 0, &no_progress_loops)) goto retry; -- 2.15.3.AMZN

7 years, 1 month

[PATCH 4.14 00/55] 4.14.87-stable review

by Greg Kroah-Hartman

This is the start of the stable review cycle for the 4.14.87 release. There are 55 patches in this series, all will be posted as a response to this one. If anyone has any issues with these being applied, please let me know. Responses should be made by Sat Dec 8 14:29:38 UTC 2018. Anything received after that time might be too late. The whole patch series can be found in one patch at: https://www.kernel.org/pub/linux/kernel/v4.x/stable-review/patch-4.14.87-rc… or in the git tree and branch at: git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git linux-4.14.y and the diffstat can be found below. thanks, greg k-h ------------- Pseudo-Shortlog of commits: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> Linux 4.14.87-rc1 Guoqing Jiang <gqjiang(a)suse.com> tipc: use destination length for copy string Arnd Bergmann <arnd(a)arndb.de> net: qed: use correct strncpy() size Roman Gushchin <guro(a)fb.com> mm: hide incomplete nr_indirectly_reclaimable in /proc/zoneinfo Daniel Lezcano <daniel.lezcano(a)linaro.org> thermal/drivers/hisi: Remove costly sensor inspection Daniel Lezcano <daniel.lezcano(a)linaro.org> thermal/drivers/hisi: Fix configuration register setting Daniel Lezcano <daniel.lezcano(a)linaro.org> thermal/drivers/hisi: Encapsulate register writes into helpers Daniel Lezcano <daniel.lezcano(a)linaro.org> thermal/drivers/hisi: Remove pointless lock Daniel Lezcano <daniel.lezcano(a)linaro.org> thermal/drivers/hisi: Remove the multiple sensors support Pavel Tikhomirov <ptikhomirov(a)virtuozzo.com> mm: cleancache: fix corruption on missed inode invalidation Masahiro Yamada <yamada.masahiro(a)socionext.com> reset: remove remaining WARN_ON() in <linux/reset.h> Masahiro Yamada <yamada.masahiro(a)socionext.com> reset: make device_reset_optional() really optional Jan Kara <jack(a)suse.cz> udf: Allow mounting volumes with incorrect identification strings Alexey Brodkin <abrodkin(a)synopsys.com> arc: [devboards] Add support of NFSv3 ACL Kevin Hilman <khilman(a)baylibre.com> ARC: change defconfig defaults to ARCv2 Nikolay Borisov <nborisov(a)suse.com> btrfs: Always try all copies when reading extent buffers Qu Wenruo <wqu(a)suse.com> btrfs: tree-checker: Don't check max block group size as current max chunk size limit is unreliable Adam Wong <adam(a)adamwong.me> Input: elan_i2c - add support for ELAN0621 touchpad Noah Westervelt <nwestervelt(a)outlook.com> Input: elan_i2c - add ACPI ID for Lenovo IdeaPad 330-15ARR Patrick Gaskin <patrick(a)pgaskin.net> Input: elan_i2c - add ELAN0620 to the ACPI table Brian Norris <briannorris(a)chromium.org> Input: cros_ec_keyb - fix button/switch capability reports Christian Hoff <christian_hoff(a)gmx.net> Input: matrix_keypad - check for errors from of_get_named_gpio() Lyude Paul <lyude(a)redhat.com> Input: synaptics - add PNP ID for ThinkPad P50 to SMBus Cameron Gutman <aicommander(a)gmail.com> Input: xpad - quirk all PDP Xbox One gamepads Johan Hovold <johan(a)kernel.org> drm/msm: fix OF child-node lookup Wei Wang <wawei(a)amazon.de> svm: Add mutex_lock to protect apic_access_page_done on AMD systems Laura Abbott <labbott(a)redhat.com> kgdboc: Fix warning with module build Laura Abbott <labbott(a)redhat.com> kgdboc: Fix restrict error Takashi Iwai <tiwai(a)suse.de> ALSA: trident: Suppress gcc string warning Andrea Arcangeli <aarcange(a)redhat.com> userfaultfd: shmem/hugetlbfs: only allow to register VM_MAYWRITE vmas Martin Wilck <mwilck(a)suse.com> scsi: scsi_devinfo: cleanly zero-pad devinfo strings Andrea Arcangeli <aarcange(a)redhat.com> userfaultfd: shmem: UFFDIO_COPY: set the page dirty if VM_WRITE is not set Andrea Arcangeli <aarcange(a)redhat.com> userfaultfd: shmem: add i_size checks Andrea Arcangeli <aarcange(a)redhat.com> userfaultfd: shmem: allocate anonymous memory for MAP_PRIVATE shmem Andrea Arcangeli <aarcange(a)redhat.com> userfaultfd: use ENOENT instead of EFAULT if the atomic copy user fails Lyude Paul <lyude(a)redhat.com> drm/meson: Fix OOB memory accesses in meson_viu_set_osd_lut() Lyude Paul <lyude(a)redhat.com> drm/meson: Enable fast_io in meson_dw_hdmi_regmap_config Sergio Correia <sergio(a)correia.cc> drm: set is_master to 0 upon drm_new_set_master() failure Sam Bobroff <sbobroff(a)linux.ibm.com> drm/ast: Fix incorrect free on ioregs Michael Guralnik <michaelgur(a)mellanox.com> IB/mlx5: Avoid load failure due to unknown link width Dmitry V. Levin <ldv(a)altlinux.org> mips: fix mips_get_syscall_arg o32 check Mathias Kresin <dev(a)kresin.me> MIPS: ralink: Fix mt7620 nd_sd pinmux Andrea Parri <andrea.parri(a)amarulasolutions.com> uprobes: Fix handle_swbp() vs. unregister() + register() race once more Sagi Grimberg <sagi(a)grimberg.me> iser: set sector for ambiguous mr status errors Arnd Bergmann <arnd(a)arndb.de> kdb: use memmove instead of overlapping memcpy Arnd Bergmann <arnd(a)arndb.de> staging: rts5208: fix gcc-8 logic error warning Arnd Bergmann <arnd(a)arndb.de> scsi: bfa: convert to strlcpy/strlcat Arnd Bergmann <arnd(a)arndb.de> drm: gma500: fix logic error Sultan Alsawaf <sultanxda(a)gmail.com> ip_tunnel: Fix name string concatenate in __ip_tunnel_create() Guenter Roeck <linux(a)roeck-us.net> kernfs: Replace strncpy with memcpy Linus Torvalds <torvalds(a)linux-foundation.org> unifdef: use memcpy instead of strncpy Takashi Iwai <tiwai(a)suse.de> ALSA: intel_hdmi: Use strlcpy() instead of strncpy() Guenter Roeck <linux(a)roeck-us.net> kobject: Replace strncpy with memcpy Linus Torvalds <torvalds(a)linux-foundation.org> test_hexdump: use memcpy instead of strncpy Stephen Rothwell <sfr(a)canb.auug.org.au> disable stringop truncation warnings for now Xiongfeng Wang <xiongfeng.wang(a)linaro.org> Kbuild: suppress packed-not-aligned warning for default setting only ------------- Diffstat: Makefile | 7 +- arch/arc/Kconfig | 2 +- arch/arc/Makefile | 2 +- arch/arc/configs/axs101_defconfig | 2 + arch/arc/configs/axs103_defconfig | 1 + arch/arc/configs/axs103_smp_defconfig | 1 + arch/arc/configs/hsdk_defconfig | 1 + arch/arc/configs/nps_defconfig | 2 + arch/arc/configs/nsim_700_defconfig | 1 + arch/arc/configs/nsimosci_defconfig | 2 + arch/arc/configs/nsimosci_hs_defconfig | 1 + arch/arc/configs/nsimosci_hs_smp_defconfig | 1 + arch/arc/configs/tb10x_defconfig | 1 + arch/arc/configs/vdk_hs38_defconfig | 1 + arch/arc/configs/vdk_hs38_smp_defconfig | 1 + arch/mips/include/asm/syscall.h | 2 +- arch/mips/ralink/mt7620.c | 2 +- arch/x86/kvm/svm.c | 19 +- drivers/gpu/drm/ast/ast_main.c | 3 +- drivers/gpu/drm/drm_auth.c | 2 + drivers/gpu/drm/gma500/mdfld_intel_display.c | 2 +- drivers/gpu/drm/meson/meson_dw_hdmi.c | 1 + drivers/gpu/drm/meson/meson_viu.c | 12 +- drivers/gpu/drm/msm/adreno/adreno_device.c | 5 +- drivers/infiniband/hw/mlx5/main.c | 29 +-- drivers/infiniband/ulp/iser/iser_verbs.c | 7 +- drivers/input/joystick/xpad.c | 16 +- drivers/input/keyboard/cros_ec_keyb.c | 3 +- drivers/input/keyboard/matrix_keypad.c | 23 +- drivers/input/mouse/elan_i2c_core.c | 3 + drivers/input/mouse/synaptics.c | 1 + drivers/net/ethernet/qlogic/qed/qed_debug.c | 6 +- drivers/reset/core.c | 9 +- drivers/scsi/bfa/bfa_fcbuild.c | 8 +- drivers/scsi/bfa/bfa_fcs.c | 78 +++---- drivers/scsi/bfa/bfa_fcs_lport.c | 62 ++---- drivers/scsi/bfa/bfa_ioc.c | 2 +- drivers/scsi/bfa/bfa_svc.c | 4 +- drivers/scsi/bfa/bfad.c | 20 +- drivers/scsi/bfa/bfad_attr.c | 2 +- drivers/scsi/bfa/bfad_bsg.c | 6 +- drivers/scsi/scsi_devinfo.c | 22 +- drivers/staging/rts5208/sd.c | 6 - drivers/thermal/hisi_thermal.c | 318 ++++++++++++++------------- drivers/tty/serial/kgdboc.c | 43 ++-- fs/btrfs/disk-io.c | 10 +- fs/btrfs/tree-checker.c | 8 +- fs/kernfs/symlink.c | 2 +- fs/udf/super.c | 16 +- fs/udf/unicode.c | 14 +- fs/userfaultfd.c | 15 ++ include/linux/reset.h | 34 ++- kernel/debug/kdb/kdb_support.c | 4 +- kernel/events/uprobes.c | 12 +- lib/kobject.c | 2 +- lib/test_hexdump.c | 2 +- mm/hugetlb.c | 2 +- mm/shmem.c | 31 ++- mm/truncate.c | 8 +- mm/userfaultfd.c | 62 ++++-- mm/vmstat.c | 4 + net/ipv4/ip_tunnel.c | 4 +- net/tipc/subscr.c | 2 +- scripts/Makefile.extrawarn | 3 + scripts/unifdef.c | 4 +- sound/pci/trident/trident.c | 2 +- sound/x86/intel_hdmi_audio.c | 2 +- 67 files changed, 538 insertions(+), 447 deletions(-)

7 years, 1 month

Re: [Xen-devel] Patch "x86/entry/64: Remove %ebx handling from error_entry/exit" has been added to the 4.9-stable tree

by David Woodhouse

On Wed, 2018-08-22 at 09:19 +0200, gregkh(a)linuxfoundation.org wrote: > This is a note to let you know that I've just added the patch titled > > x86/entry/64: Remove %ebx handling from error_entry/exit > > to the 4.9-stable tree which can be found at: > http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=sum… > > The filename of the patch is: > x86-entry-64-remove-ebx-handling-from-error_entry-exit.patch > and it can be found in the queue-4.9 subdirectory. Can we have it for 4.4 too, please? > [ Note to stable maintainers: this should probably get applied to all > kernels. If you're nervous about that, a more conservative fix to > add xorl %ebx,%ebx; incl %ebx before the jump to error_exit should > also fix the problem. ] Can we assume it's always from kernel? The Xen code definitely seems to handle invoking this from both kernel and userspace contexts. Shouldn't %ebx get set to !(regs->rsp & 3) ? Either way, let's just do it in the stable tree exactly the same way it's done upstream. > - * On entry, EBX is a "return to kernel mode" flag: Re-introduce the typo 'EBS' here, to make the patch apply cleanly to 4.4. It's only removing that line anyway. Or just cherry-pick upstream commit 75ca5b22260ef7 first.

7 years, 1 month

stable-rc/linux-4.9.y build: 193 builds: 2 failed, 191 passed, 122 warnings (v4.9.143-103-g2eb2c353eec4)

by kernelci.org bot

stable-rc/linux-4.9.y build: 193 builds: 2 failed, 191 passed, 122 warnings (v4.9.143-103-g2eb2c353eec4) Full Build Summary: https://kernelci.org/build/stable-rc/branch/linux-4.9.y/kernel/v4.9.143-103… Tree: stable-rc Branch: linux-4.9.y Git Describe: v4.9.143-103-g2eb2c353eec4 Git Commit: 2eb2c353eec495008169e908951ae0eacaf1bb5b Git URL: http://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git Built: 6 unique architectures Build Failures Detected: arc: gcc version 7.1.1 20170710 (ARCv2 ISA Linux uClibc toolchain 2017.09) zebu_hs_defconfig: FAIL zebu_hs_smp_defconfig: FAIL Warnings Detected: arc: gcc version 7.1.1 20170710 (ARCv2 ISA Linux uClibc toolchain 2017.09) allnoconfig: 5 warnings axs103_defconfig: 18 warnings axs103_smp_defconfig: 19 warnings nsim_hs_smp_defconfig: 6 warnings nsimosci_hs_defconfig: 8 warnings nsimosci_hs_smp_defconfig: 9 warnings tinyconfig: 6 warnings vdk_hs38_defconfig: 19 warnings vdk_hs38_smp_defconfig: 20 warnings zebu_hs_defconfig: 5 warnings zebu_hs_smp_defconfig: 6 warnings mips: gcc version 6.3.0 (GCC) decstation_defconfig: 1 warning Warnings summary: 36 fs/ext4/ext4_jbd2.h:430:1: warning: control reaches end of non-void function [-Wreturn-type] 12 arch/arc/include/asm/cmpxchg.h:95:29: warning: value computed is not used [-Wunused-value] 11 kernel/sched/core.c:3294:1: warning: control reaches end of non-void function [-Wreturn-type] 11 include/linux/kernel.h:740:16: warning: comparison of distinct pointer types lacks a cast 9 net/ipv4/tcp_input.c:4325:49: warning: array subscript is above array bounds [-Warray-bounds] 9 net/core/ethtool.c:300:1: warning: control reaches end of non-void function [-Wreturn-type] 9 include/linux/sunrpc/svc_xprt.h:178:1: warning: control reaches end of non-void function [-Wreturn-type] 7 warning: (ARC) selects HAVE_FUTEX_CMPXCHG which has unmet direct dependencies (FUTEX) 6 fs/posix_acl.c:34:1: warning: control reaches end of non-void function [-Wreturn-type] 5 lib/cpumask.c:211:1: warning: control reaches end of non-void function [-Wreturn-type] 4 block/cfq-iosched.c:3840:1: warning: control reaches end of non-void function [-Wreturn-type] 2 arch/arc/kernel/unwind.c:188:14: warning: 'unw_hdr_alloc' defined but not used [-Wunused-function] 1 drivers/net/ethernet/amd/declance.c:1231:2: warning: 'desc' may be used uninitialized in this function [-Wmaybe-uninitialized] ================================================================================ Detailed per-defconfig build reports: -------------------------------------------------------------------------------- acs5k_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- acs5k_tiny_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- allnoconfig (i386) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- allnoconfig (x86_64) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- allnoconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- allnoconfig (arm64) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- allnoconfig (mips) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- allnoconfig (arc) — PASS, 0 errors, 5 warnings, 0 section mismatches Warnings: warning: (ARC) selects HAVE_FUTEX_CMPXCHG which has unmet direct dependencies (FUTEX) warning: (ARC) selects HAVE_FUTEX_CMPXCHG which has unmet direct dependencies (FUTEX) warning: (ARC) selects HAVE_FUTEX_CMPXCHG which has unmet direct dependencies (FUTEX) kernel/sched/core.c:3294:1: warning: control reaches end of non-void function [-Wreturn-type] include/linux/kernel.h:740:16: warning: comparison of distinct pointer types lacks a cast -------------------------------------------------------------------------------- am200epdkit_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- ar7_defconfig (mips) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- aspeed_g4_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- aspeed_g5_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- assabet_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- at91_dt_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- ath25_defconfig (mips) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- ath79_defconfig (mips) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- axm55xx_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- axs103_defconfig (arc) — PASS, 0 errors, 18 warnings, 0 section mismatches Warnings: kernel/sched/core.c:3294:1: warning: control reaches end of non-void function [-Wreturn-type] include/linux/kernel.h:740:16: warning: comparison of distinct pointer types lacks a cast fs/ext4/ext4_jbd2.h:430:1: warning: control reaches end of non-void function [-Wreturn-type] fs/ext4/ext4_jbd2.h:430:1: warning: control reaches end of non-void function [-Wreturn-type] fs/ext4/ext4_jbd2.h:430:1: warning: control reaches end of non-void function [-Wreturn-type] block/cfq-iosched.c:3840:1: warning: control reaches end of non-void function [-Wreturn-type] fs/ext4/ext4_jbd2.h:430:1: warning: control reaches end of non-void function [-Wreturn-type] fs/ext4/ext4_jbd2.h:430:1: warning: control reaches end of non-void function [-Wreturn-type] fs/ext4/ext4_jbd2.h:430:1: warning: control reaches end of non-void function [-Wreturn-type] fs/ext4/ext4_jbd2.h:430:1: warning: control reaches end of non-void function [-Wreturn-type] fs/ext4/ext4_jbd2.h:430:1: warning: control reaches end of non-void function [-Wreturn-type] net/core/ethtool.c:300:1: warning: control reaches end of non-void function [-Wreturn-type] fs/ext4/ext4_jbd2.h:430:1: warning: control reaches end of non-void function [-Wreturn-type] net/ipv4/tcp_input.c:4325:49: warning: array subscript is above array bounds [-Warray-bounds] arch/arc/include/asm/cmpxchg.h:95:29: warning: value computed is not used [-Wunused-value] arch/arc/include/asm/cmpxchg.h:95:29: warning: value computed is not used [-Wunused-value] fs/posix_acl.c:34:1: warning: control reaches end of non-void function [-Wreturn-type] include/linux/sunrpc/svc_xprt.h:178:1: warning: control reaches end of non-void function [-Wreturn-type] -------------------------------------------------------------------------------- axs103_smp_defconfig (arc) — PASS, 0 errors, 19 warnings, 0 section mismatches Warnings: include/linux/kernel.h:740:16: warning: comparison of distinct pointer types lacks a cast fs/ext4/ext4_jbd2.h:430:1: warning: control reaches end of non-void function [-Wreturn-type] fs/ext4/ext4_jbd2.h:430:1: warning: control reaches end of non-void function [-Wreturn-type] kernel/sched/core.c:3294:1: warning: control reaches end of non-void function [-Wreturn-type] fs/ext4/ext4_jbd2.h:430:1: warning: control reaches end of non-void function [-Wreturn-type] block/cfq-iosched.c:3840:1: warning: control reaches end of non-void function [-Wreturn-type] fs/ext4/ext4_jbd2.h:430:1: warning: control reaches end of non-void function [-Wreturn-type] fs/ext4/ext4_jbd2.h:430:1: warning: control reaches end of non-void function [-Wreturn-type] fs/ext4/ext4_jbd2.h:430:1: warning: control reaches end of non-void function [-Wreturn-type] fs/ext4/ext4_jbd2.h:430:1: warning: control reaches end of non-void function [-Wreturn-type] fs/ext4/ext4_jbd2.h:430:1: warning: control reaches end of non-void function [-Wreturn-type] fs/ext4/ext4_jbd2.h:430:1: warning: control reaches end of non-void function [-Wreturn-type] arch/arc/include/asm/cmpxchg.h:95:29: warning: value computed is not used [-Wunused-value] arch/arc/include/asm/cmpxchg.h:95:29: warning: value computed is not used [-Wunused-value] fs/posix_acl.c:34:1: warning: control reaches end of non-void function [-Wreturn-type] net/core/ethtool.c:300:1: warning: control reaches end of non-void function [-Wreturn-type] net/ipv4/tcp_input.c:4325:49: warning: array subscript is above array bounds [-Warray-bounds] include/linux/sunrpc/svc_xprt.h:178:1: warning: control reaches end of non-void function [-Wreturn-type] lib/cpumask.c:211:1: warning: control reaches end of non-void function [-Wreturn-type] -------------------------------------------------------------------------------- badge4_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- bcm2835_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- bcm47xx_defconfig (mips) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- bcm63xx_defconfig (mips) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- bigsur_defconfig (mips) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- bmips_be_defconfig (mips) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- bmips_stb_defconfig (mips) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- capcella_defconfig (mips) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- cavium_octeon_defconfig (mips) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- cerfcube_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- ci20_defconfig (mips) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- clps711x_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- cm_x2xx_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- cm_x300_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- cns3420vb_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- cobalt_defconfig (mips) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- colibri_pxa270_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- colibri_pxa300_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- collie_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- corgi_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- davinci_all_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- db1xxx_defconfig (mips) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- decstation_defconfig (mips) — PASS, 0 errors, 1 warning, 0 section mismatches Warnings: drivers/net/ethernet/amd/declance.c:1231:2: warning: 'desc' may be used uninitialized in this function [-Wmaybe-uninitialized] -------------------------------------------------------------------------------- defconfig (arm64) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- dove_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- e55_defconfig (mips) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- ebsa110_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- efm32_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- em_x270_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- ep93xx_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- eseries_pxa_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- exynos_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- ezx_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- footbridge_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- fuloong2e_defconfig (mips) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- gpr_defconfig (mips) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- h3600_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- h5000_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- hackkit_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- hisi_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- imote2_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- imx_v4_v5_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- imx_v6_v7_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- integrator_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- iop13xx_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- iop32x_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- iop33x_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- ip22_defconfig (mips) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- ip27_defconfig (mips) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- ip28_defconfig (mips) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- ip32_defconfig (mips) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- ixp4xx_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- jazz_defconfig (mips) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- jmr3927_defconfig (mips) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- jornada720_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- keystone_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- ks8695_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- lart_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- lasat_defconfig (mips) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- lemote2f_defconfig (mips) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- loongson1b_defconfig (mips) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- loongson1c_defconfig (mips) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- loongson3_defconfig (mips) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- lpc18xx_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- lpc32xx_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- lpd270_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- lubbock_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- magician_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- mainstone_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- malta_defconfig (mips) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- malta_kvm_defconfig (mips) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- malta_kvm_guest_defconfig (mips) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- malta_qemu_32r6_defconfig (mips) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- maltaaprp_defconfig (mips) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- maltasmvp_defconfig (mips) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- maltasmvp_eva_defconfig (mips) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- maltaup_defconfig (mips) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- maltaup_xpa_defconfig (mips) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- markeins_defconfig (mips) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- mini2440_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- mips_paravirt_defconfig (mips) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- mmp2_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- moxart_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- mpc30x_defconfig (mips) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- mps2_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- msp71xx_defconfig (mips) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- mtx1_defconfig (mips) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- multi_v4t_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- multi_v5_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- multi_v7_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- mv78xx0_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- mvebu_v5_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- mvebu_v7_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- mxs_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- neponset_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- netwinder_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- netx_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- nhk8815_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- nlm_xlp_defconfig (mips) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- nlm_xlr_defconfig (mips) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- nsim_hs_smp_defconfig (arc) — PASS, 0 errors, 6 warnings, 0 section mismatches Warnings: include/linux/kernel.h:740:16: warning: comparison of distinct pointer types lacks a cast kernel/sched/core.c:3294:1: warning: control reaches end of non-void function [-Wreturn-type] lib/cpumask.c:211:1: warning: control reaches end of non-void function [-Wreturn-type] net/core/ethtool.c:300:1: warning: control reaches end of non-void function [-Wreturn-type] net/ipv4/tcp_input.c:4325:49: warning: array subscript is above array bounds [-Warray-bounds] include/linux/sunrpc/svc_xprt.h:178:1: warning: control reaches end of non-void function [-Wreturn-type] -------------------------------------------------------------------------------- nsimosci_hs_defconfig (arc) — PASS, 0 errors, 8 warnings, 0 section mismatches Warnings: include/linux/kernel.h:740:16: warning: comparison of distinct pointer types lacks a cast kernel/sched/core.c:3294:1: warning: control reaches end of non-void function [-Wreturn-type] arch/arc/include/asm/cmpxchg.h:95:29: warning: value computed is not used [-Wunused-value] arch/arc/include/asm/cmpxchg.h:95:29: warning: value computed is not used [-Wunused-value] fs/posix_acl.c:34:1: warning: control reaches end of non-void function [-Wreturn-type] net/core/ethtool.c:300:1: warning: control reaches end of non-void function [-Wreturn-type] net/ipv4/tcp_input.c:4325:49: warning: array subscript is above array bounds [-Warray-bounds] include/linux/sunrpc/svc_xprt.h:178:1: warning: control reaches end of non-void function [-Wreturn-type] -------------------------------------------------------------------------------- nsimosci_hs_smp_defconfig (arc) — PASS, 0 errors, 9 warnings, 0 section mismatches Warnings: kernel/sched/core.c:3294:1: warning: control reaches end of non-void function [-Wreturn-type] include/linux/kernel.h:740:16: warning: comparison of distinct pointer types lacks a cast arch/arc/include/asm/cmpxchg.h:95:29: warning: value computed is not used [-Wunused-value] net/core/ethtool.c:300:1: warning: control reaches end of non-void function [-Wreturn-type] lib/cpumask.c:211:1: warning: control reaches end of non-void function [-Wreturn-type] arch/arc/include/asm/cmpxchg.h:95:29: warning: value computed is not used [-Wunused-value] fs/posix_acl.c:34:1: warning: control reaches end of non-void function [-Wreturn-type] net/ipv4/tcp_input.c:4325:49: warning: array subscript is above array bounds [-Warray-bounds] include/linux/sunrpc/svc_xprt.h:178:1: warning: control reaches end of non-void function [-Wreturn-type] -------------------------------------------------------------------------------- nuc910_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- nuc950_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- nuc960_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- omap1_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- omap2plus_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- orion5x_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- palmz72_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- pcm027_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- pic32mzda_defconfig (mips) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- pistachio_defconfig (mips) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- pleb_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- pnx8335_stb225_defconfig (mips) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- prima2_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- pxa168_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- pxa255-idp_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- pxa3xx_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- pxa910_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- pxa_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- qcom_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- qi_lb60_defconfig (mips) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- raumfeld_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- rb532_defconfig (mips) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- rbtx49xx_defconfig (mips) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- realview_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- rm200_defconfig (mips) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- rpc_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- rt305x_defconfig (mips) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- s3c2410_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- s3c6400_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- s5pv210_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- sama5_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- sb1250_swarm_defconfig (mips) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- shannon_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- shmobile_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- simpad_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- socfpga_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- spear13xx_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- spear3xx_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- spear6xx_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- spitz_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- stm32_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- sunxi_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- tb0219_defconfig (mips) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- tb0226_defconfig (mips) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- tb0287_defconfig (mips) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- tct_hammer_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- tegra_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- tinyconfig (arm64) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- tinyconfig (x86_64) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- tinyconfig (i386) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- tinyconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- tinyconfig (mips) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- tinyconfig (arc) — PASS, 0 errors, 6 warnings, 0 section mismatches Warnings: warning: (ARC) selects HAVE_FUTEX_CMPXCHG which has unmet direct dependencies (FUTEX) warning: (ARC) selects HAVE_FUTEX_CMPXCHG which has unmet direct dependencies (FUTEX) warning: (ARC) selects HAVE_FUTEX_CMPXCHG which has unmet direct dependencies (FUTEX) warning: (ARC) selects HAVE_FUTEX_CMPXCHG which has unmet direct dependencies (FUTEX) include/linux/kernel.h:740:16: warning: comparison of distinct pointer types lacks a cast kernel/sched/core.c:3294:1: warning: control reaches end of non-void function [-Wreturn-type] -------------------------------------------------------------------------------- trizeps4_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- u300_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- u8500_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- vdk_hs38_defconfig (arc) — PASS, 0 errors, 19 warnings, 0 section mismatches Warnings: arch/arc/kernel/unwind.c:188:14: warning: 'unw_hdr_alloc' defined but not used [-Wunused-function] include/linux/kernel.h:740:16: warning: comparison of distinct pointer types lacks a cast kernel/sched/core.c:3294:1: warning: control reaches end of non-void function [-Wreturn-type] fs/ext4/ext4_jbd2.h:430:1: warning: control reaches end of non-void function [-Wreturn-type] fs/ext4/ext4_jbd2.h:430:1: warning: control reaches end of non-void function [-Wreturn-type] fs/ext4/ext4_jbd2.h:430:1: warning: control reaches end of non-void function [-Wreturn-type] block/cfq-iosched.c:3840:1: warning: control reaches end of non-void function [-Wreturn-type] fs/ext4/ext4_jbd2.h:430:1: warning: control reaches end of non-void function [-Wreturn-type] fs/ext4/ext4_jbd2.h:430:1: warning: control reaches end of non-void function [-Wreturn-type] fs/ext4/ext4_jbd2.h:430:1: warning: control reaches end of non-void function [-Wreturn-type] fs/ext4/ext4_jbd2.h:430:1: warning: control reaches end of non-void function [-Wreturn-type] fs/ext4/ext4_jbd2.h:430:1: warning: control reaches end of non-void function [-Wreturn-type] fs/ext4/ext4_jbd2.h:430:1: warning: control reaches end of non-void function [-Wreturn-type] net/core/ethtool.c:300:1: warning: control reaches end of non-void function [-Wreturn-type] net/ipv4/tcp_input.c:4325:49: warning: array subscript is above array bounds [-Warray-bounds] arch/arc/include/asm/cmpxchg.h:95:29: warning: value computed is not used [-Wunused-value] arch/arc/include/asm/cmpxchg.h:95:29: warning: value computed is not used [-Wunused-value] fs/posix_acl.c:34:1: warning: control reaches end of non-void function [-Wreturn-type] include/linux/sunrpc/svc_xprt.h:178:1: warning: control reaches end of non-void function [-Wreturn-type] -------------------------------------------------------------------------------- vdk_hs38_smp_defconfig (arc) — PASS, 0 errors, 20 warnings, 0 section mismatches Warnings: arch/arc/kernel/unwind.c:188:14: warning: 'unw_hdr_alloc' defined but not used [-Wunused-function] kernel/sched/core.c:3294:1: warning: control reaches end of non-void function [-Wreturn-type] include/linux/kernel.h:740:16: warning: comparison of distinct pointer types lacks a cast fs/ext4/ext4_jbd2.h:430:1: warning: control reaches end of non-void function [-Wreturn-type] fs/ext4/ext4_jbd2.h:430:1: warning: control reaches end of non-void function [-Wreturn-type] fs/ext4/ext4_jbd2.h:430:1: warning: control reaches end of non-void function [-Wreturn-type] fs/ext4/ext4_jbd2.h:430:1: warning: control reaches end of non-void function [-Wreturn-type] fs/ext4/ext4_jbd2.h:430:1: warning: control reaches end of non-void function [-Wreturn-type] block/cfq-iosched.c:3840:1: warning: control reaches end of non-void function [-Wreturn-type] fs/ext4/ext4_jbd2.h:430:1: warning: control reaches end of non-void function [-Wreturn-type] fs/ext4/ext4_jbd2.h:430:1: warning: control reaches end of non-void function [-Wreturn-type] fs/ext4/ext4_jbd2.h:430:1: warning: control reaches end of non-void function [-Wreturn-type] fs/ext4/ext4_jbd2.h:430:1: warning: control reaches end of non-void function [-Wreturn-type] net/core/ethtool.c:300:1: warning: control reaches end of non-void function [-Wreturn-type] lib/cpumask.c:211:1: warning: control reaches end of non-void function [-Wreturn-type] arch/arc/include/asm/cmpxchg.h:95:29: warning: value computed is not used [-Wunused-value] net/ipv4/tcp_input.c:4325:49: warning: array subscript is above array bounds [-Warray-bounds] arch/arc/include/asm/cmpxchg.h:95:29: warning: value computed is not used [-Wunused-value] fs/posix_acl.c:34:1: warning: control reaches end of non-void function [-Wreturn-type] include/linux/sunrpc/svc_xprt.h:178:1: warning: control reaches end of non-void function [-Wreturn-type] -------------------------------------------------------------------------------- versatile_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- vexpress_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- vf610m4_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- viper_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- vt8500_v6_v7_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- workpad_defconfig (mips) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- xcep_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- xilfpga_defconfig (mips) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- xway_defconfig (mips) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- zebu_hs_defconfig (arc) — FAIL, 0 errors, 5 warnings, 0 section mismatches Warnings: kernel/sched/core.c:3294:1: warning: control reaches end of non-void function [-Wreturn-type] include/linux/kernel.h:740:16: warning: comparison of distinct pointer types lacks a cast net/core/ethtool.c:300:1: warning: control reaches end of non-void function [-Wreturn-type] net/ipv4/tcp_input.c:4325:49: warning: array subscript is above array bounds [-Warray-bounds] include/linux/sunrpc/svc_xprt.h:178:1: warning: control reaches end of non-void function [-Wreturn-type] -------------------------------------------------------------------------------- zebu_hs_smp_defconfig (arc) — FAIL, 0 errors, 6 warnings, 0 section mismatches Warnings: kernel/sched/core.c:3294:1: warning: control reaches end of non-void function [-Wreturn-type] include/linux/kernel.h:740:16: warning: comparison of distinct pointer types lacks a cast net/core/ethtool.c:300:1: warning: control reaches end of non-void function [-Wreturn-type] lib/cpumask.c:211:1: warning: control reaches end of non-void function [-Wreturn-type] net/ipv4/tcp_input.c:4325:49: warning: array subscript is above array bounds [-Warray-bounds] include/linux/sunrpc/svc_xprt.h:178:1: warning: control reaches end of non-void function [-Wreturn-type] -------------------------------------------------------------------------------- zeus_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- zx_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches --- For more info write to <info(a)kernelci.org>

7 years, 1 month

[PATCH] arm64: hibernate: Avoid sending cross-calling with interrupts disabled

by Will Deacon

Since commit 3b8c9f1cdfc50 ("arm64: IPI each CPU after invalidating the I-cache for kernel mappings"), a call to flush_icache_range() will use an IPI to cross-call other online CPUs so that any stale instructions are flushed from their pipelines. This triggers a WARN during the hibernation resume path, where flush_icache_range() is called with interrupts disabled and is therefore prone to deadlock: | Disabling non-boot CPUs ... | CPU1: shutdown | psci: CPU1 killed. | CPU2: shutdown | psci: CPU2 killed. | CPU3: shutdown | psci: CPU3 killed. | WARNING: CPU: 0 PID: 1 at ../kernel/smp.c:416 smp_call_function_many+0xd4/0x350 | Modules linked in: | CPU: 0 PID: 1 Comm: swapper/0 Not tainted 4.20.0-rc4 #1 Since all secondary CPUs have been taken offline prior to invalidating the I-cache, there's actually no need for an IPI and we can simply call __flush_icache_range() instead. Cc: <stable(a)vger.kernel.org> Fixes: 3b8c9f1cdfc50 ("arm64: IPI each CPU after invalidating the I-cache for kernel mappings") Reported-by: Kunihiko Hayashi <hayashi.kunihiko(a)socionext.com> Tested-by: Kunihiko Hayashi <hayashi.kunihiko(a)socionext.com> Tested-by: James Morse <james.morse(a)arm.com> Signed-off-by: Will Deacon <will.deacon(a)arm.com> --- arch/arm64/kernel/hibernate.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/arm64/kernel/hibernate.c b/arch/arm64/kernel/hibernate.c index 6b2686d54411..29cdc99688f3 100644 --- a/arch/arm64/kernel/hibernate.c +++ b/arch/arm64/kernel/hibernate.c @@ -214,7 +214,7 @@ static int create_safe_exec_page(void *src_start, size_t length, } memcpy((void *)dst, src_start, length); - flush_icache_range(dst, dst + length); + __flush_icache_range(dst, dst + length); pgdp = pgd_offset_raw(allocator(mask), dst_addr); if (pgd_none(READ_ONCE(*pgdp))) { -- 2.1.4

7 years, 1 month

[PATCH 3/4] powerpc/tm: Unset MSR[TS] if not recheckpointing

by Breno Leitao

There is a TM Bad Thing bug that can be caused when you return from a signal context in a suspended transaction but with ucontext MSR[TS] unset. This forces regs->msr[TS] to be set at syscall entrance (since the CPU state is transactional). It also calls treclaim() to flush the transaction state, which is done based on the live (mfmsr) MSR state. Since user context MSR[TS] is not set, then restore_tm_sigcontexts() is not called, thus, not executing recheckpoint, keeping the CPU state as not transactional. When calling rfid, SRR1 will have MSR[TS] set, but the CPU state is non transactional, causing the TM Bad Thing with the following stack: [ 33.862316] Bad kernel stack pointer 3fffd9dce3e0 at c00000000000c47c cpu 0x8: Vector: 700 (Program Check) at [c00000003ff7fd40] pc: c00000000000c47c: fast_exception_return+0xac/0xb4 lr: 00003fff865f442c sp: 3fffd9dce3e0 msr: 8000000102a03031 current = 0xc00000041f68b700 paca = 0xc00000000fb84800 softe: 0 irq_happened: 0x01 pid = 1721, comm = tm-signal-sigre Linux version 4.9.0-3-powerpc64le (debian-kernel(a)lists.debian.org) (gcc version 6.3.0 20170516 (Debian 6.3.0-18) ) #1 SMP Debian 4.9.30-2+deb9u2 (2017-06-26) WARNING: exception is not recoverable, can't continue The same problem happens on 32-bits signal handler, and the fix is very similar, if tm_recheckpoint() is not executed, then regs->msr[TS] should be zeroed. This patch also fixes a sparse warning related to lack of indentation when CONFIG_PPC_TRANSACTIONAL_MEM is set. Fixes: 2b0a576d15e0e ("powerpc: Add new transactional memory state to the signal context") CC: Stable <stable(a)vger.kernel.org> # 3.10+ Signed-off-by: Breno Leitao <leitao(a)debian.org> --- arch/powerpc/kernel/signal_32.c | 18 +++++++++++++----- arch/powerpc/kernel/signal_64.c | 20 ++++++++++++++++---- 2 files changed, 29 insertions(+), 9 deletions(-) diff --git a/arch/powerpc/kernel/signal_32.c b/arch/powerpc/kernel/signal_32.c index e6474a45cef5..6327fd79b0fb 100644 --- a/arch/powerpc/kernel/signal_32.c +++ b/arch/powerpc/kernel/signal_32.c @@ -1140,11 +1140,11 @@ SYSCALL_DEFINE0(rt_sigreturn) { struct rt_sigframe __user *rt_sf; struct pt_regs *regs = current_pt_regs(); + int tm_restore = 0; #ifdef CONFIG_PPC_TRANSACTIONAL_MEM struct ucontext __user *uc_transact; unsigned long msr_hi; unsigned long tmp; - int tm_restore = 0; #endif /* Always make any pending restarted system calls return -EINTR */ current->restart_block.fn = do_no_restart_syscall; @@ -1192,11 +1192,19 @@ SYSCALL_DEFINE0(rt_sigreturn) goto bad; } } - if (!tm_restore) - /* Fall through, for non-TM restore */ + if (!tm_restore) { + /* + * Unset regs->msr because ucontext MSR TS is not + * set, and recheckpoint was not called. This avoid + * hitting a TM Bad thing at RFID + */ + regs->msr &= ~MSR_TS_MASK; + } + /* Fall through, for non-TM restore */ #endif - if (do_setcontext(&rt_sf->uc, regs, 1)) - goto bad; + if (!tm_restore) + if (do_setcontext(&rt_sf->uc, regs, 1)) + goto bad; /* * It's not clear whether or why it is desirable to save the diff --git a/arch/powerpc/kernel/signal_64.c b/arch/powerpc/kernel/signal_64.c index 83d51bf586c7..daa28cb72272 100644 --- a/arch/powerpc/kernel/signal_64.c +++ b/arch/powerpc/kernel/signal_64.c @@ -740,11 +740,23 @@ SYSCALL_DEFINE0(rt_sigreturn) &uc_transact->uc_mcontext)) goto badframe; } - else - /* Fall through, for non-TM restore */ #endif - if (restore_sigcontext(current, NULL, 1, &uc->uc_mcontext)) - goto badframe; + /* Fall through, for non-TM restore */ + if (!MSR_TM_ACTIVE(msr)) { + /* + * Unset MSR[TS] on the thread regs since MSR from user + * context does not have MSR active, and recheckpoint was + * not called since restore_tm_sigcontexts() was not called + * also. + * + * If not unsetting it, the code can RFID to userspace with + * MSR[TS] set, but without CPU in the proper state, + * causing a TM bad thing. + */ + current->thread.regs->msr &= ~MSR_TS_MASK; + if (restore_sigcontext(current, NULL, 1, &uc->uc_mcontext)) + goto badframe; + } if (restore_altstack(&uc->uc_stack)) goto badframe; -- 2.19.0

7 years, 1 month

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