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[merged mm-hotfixes-stable] mm-memfd-fix-information-leak-in-hugetlb-folios.patch removed from -mm tree

by Andrew Morton

The quilt patch titled Subject: mm/memfd: fix information leak in hugetlb folios has been removed from the -mm tree. Its filename was mm-memfd-fix-information-leak-in-hugetlb-folios.patch This patch was dropped because it was merged into the mm-hotfixes-stable branch of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm ------------------------------------------------------ From: Deepanshu Kartikey <kartikey406(a)gmail.com> Subject: mm/memfd: fix information leak in hugetlb folios Date: Wed, 12 Nov 2025 20:20:34 +0530 When allocating hugetlb folios for memfd, three initialization steps are missing: 1. Folios are not zeroed, leading to kernel memory disclosure to userspace 2. Folios are not marked uptodate before adding to page cache 3. hugetlb_fault_mutex is not taken before hugetlb_add_to_page_cache() The memfd allocation path bypasses the normal page fault handler (hugetlb_no_page) which would handle all of these initialization steps. This is problematic especially for udmabuf use cases where folios are pinned and directly accessed by userspace via DMA. Fix by matching the initialization pattern used in hugetlb_no_page(): - Zero the folio using folio_zero_user() which is optimized for huge pages - Mark it uptodate with folio_mark_uptodate() - Take hugetlb_fault_mutex before adding to page cache to prevent races The folio_zero_user() change also fixes a potential security issue where uninitialized kernel memory could be disclosed to userspace through read() or mmap() operations on the memfd. Link: https://lkml.kernel.org/r/20251112145034.2320452-1-kartikey406@gmail.com Fixes: 89c1905d9c14 ("mm/gup: introduce memfd_pin_folios() for pinning memfd folios") Signed-off-by: Deepanshu Kartikey <kartikey406(a)gmail.com> Reported-by: syzbot+f64019ba229e3a5c411b(a)syzkaller.appspotmail.com Link: https://lore.kernel.org/all/20251112031631.2315651-1-kartikey406@gmail.com/ [v1] Closes: https://syzkaller.appspot.com/bug?extid=f64019ba229e3a5c411b Suggested-by: Oscar Salvador <osalvador(a)suse.de> Suggested-by: David Hildenbrand <david(a)redhat.com> Tested-by: syzbot+f64019ba229e3a5c411b(a)syzkaller.appspotmail.com Acked-by: Oscar Salvador <osalvador(a)suse.de> Acked-by: David Hildenbrand (Red Hat) <david(a)kernel.org> Acked-by: Hugh Dickins <hughd(a)google.com> Cc: Vivek Kasireddy <vivek.kasireddy(a)intel.com> Cc: Jason Gunthorpe <jgg(a)nvidia.com> Cc: Jason Gunthorpe <jgg(a)nvidia.com> (v2) Cc: Christoph Hellwig <hch(a)lst.de> (v6) Cc: Dave Airlie <airlied(a)redhat.com> Cc: Gerd Hoffmann <kraxel(a)redhat.com> Cc: <stable(a)vger.kernel.org> Signed-off-by: Andrew Morton <akpm(a)linux-foundation.org> --- mm/memfd.c | 27 +++++++++++++++++++++++++++ 1 file changed, 27 insertions(+) --- a/mm/memfd.c~mm-memfd-fix-information-leak-in-hugetlb-folios +++ a/mm/memfd.c @@ -96,9 +96,36 @@ struct folio *memfd_alloc_folio(struct f NULL, gfp_mask); if (folio) { + u32 hash; + + /* + * Zero the folio to prevent information leaks to userspace. + * Use folio_zero_user() which is optimized for huge/gigantic + * pages. Pass 0 as addr_hint since this is not a faulting path + * and we don't have a user virtual address yet. + */ + folio_zero_user(folio, 0); + + /* + * Mark the folio uptodate before adding to page cache, + * as required by filemap.c and other hugetlb paths. + */ + __folio_mark_uptodate(folio); + + /* + * Serialize hugepage allocation and instantiation to prevent + * races with concurrent allocations, as required by all other + * callers of hugetlb_add_to_page_cache(). + */ + hash = hugetlb_fault_mutex_hash(memfd->f_mapping, idx); + mutex_lock(&hugetlb_fault_mutex_table[hash]); + err = hugetlb_add_to_page_cache(folio, memfd->f_mapping, idx); + + mutex_unlock(&hugetlb_fault_mutex_table[hash]); + if (err) { folio_put(folio); goto err_unresv; _ Patches currently in -mm which might be from kartikey406(a)gmail.com are

1 week, 3 days

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[merged mm-hotfixes-stable] mm-swap-remove-duplicate-nr_swap_pages-decrement-in-get_swap_page_of_type.patch removed from -mm tree

by Andrew Morton

The quilt patch titled Subject: mm: swap: remove duplicate nr_swap_pages decrement in get_swap_page_of_type() has been removed from the -mm tree. Its filename was mm-swap-remove-duplicate-nr_swap_pages-decrement-in-get_swap_page_of_type.patch This patch was dropped because it was merged into the mm-hotfixes-stable branch of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm ------------------------------------------------------ From: Youngjun Park <youngjun.park(a)lge.com> Subject: mm: swap: remove duplicate nr_swap_pages decrement in get_swap_page_of_type() Date: Sun, 2 Nov 2025 17:24:56 +0900 After commit 4f78252da887, nr_swap_pages is decremented in swap_range_alloc(). Since cluster_alloc_swap_entry() calls swap_range_alloc() internally, the decrement in get_swap_page_of_type() causes double-decrementing. As a representative userspace-visible runtime example of the impact, /proc/meminfo reports increasingly inaccurate SwapFree values. The discrepancy grows with each swap allocation, and during hibernation when large amounts of memory are written to swap, the reported value can deviate significantly from actual available swap space, misleading users and monitoring tools. Remove the duplicate decrement. Link: https://lkml.kernel.org/r/20251102082456.79807-1-youngjun.park@lge.com Fixes: 4f78252da887 ("mm: swap: move nr_swap_pages counter decrement from folio_alloc_swap() to swap_range_alloc()") Signed-off-by: Youngjun Park <youngjun.park(a)lge.com> Acked-by: Chris Li <chrisl(a)kernel.org> Reviewed-by: Barry Song <baohua(a)kernel.org> Reviewed-by: Kairui Song <kasong(a)tencent.com> Acked-by: Nhat Pham <nphamcs(a)gmail.com> Cc: Baoquan He <bhe(a)redhat.com> Cc: Kemeng Shi <shikemeng(a)huaweicloud.com> Cc: <stable(a)vger.kernel.org> [6.17+] Signed-off-by: Andrew Morton <akpm(a)linux-foundation.org> --- mm/swapfile.c | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) --- a/mm/swapfile.c~mm-swap-remove-duplicate-nr_swap_pages-decrement-in-get_swap_page_of_type +++ a/mm/swapfile.c @@ -2005,10 +2005,8 @@ swp_entry_t get_swap_page_of_type(int ty local_lock(&percpu_swap_cluster.lock); offset = cluster_alloc_swap_entry(si, 0, 1); local_unlock(&percpu_swap_cluster.lock); - if (offset) { + if (offset) entry = swp_entry(si->type, offset); - atomic_long_dec(&nr_swap_pages); - } } put_swap_device(si); } _ Patches currently in -mm which might be from youngjun.park(a)lge.com are mm-swap-fix-wrong-plist-empty-check-in-swap_alloc_slow.patch mm-swap-fix-memory-leak-in-setup_clusters-error-path.patch mm-swap-use-swp_solidstate-to-determine-if-swap-is-rotational.patch mm-swap-remove-redundant-comment-for-read_swap_cache_async.patch mm-swap-change-swap_alloc_slow-to-void.patch mm-swap-remove-scan_swap_map_slots-references-from-comments.patch

1 week, 3 days

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[tip: x86/urgent] x86/CPU/AMD: Add RDSEED fix for Zen5

by tip-bot2 for Gregory Price

The following commit has been merged into the x86/urgent branch of tip: Commit-ID: 607b9fb2ce248cc5b633c5949e0153838992c152 Gitweb: https://git.kernel.org/tip/607b9fb2ce248cc5b633c5949e0153838992c152 Author: Gregory Price <gourry(a)gourry.net> AuthorDate: Mon, 20 Oct 2025 11:13:55 +02:00 Committer: Borislav Petkov (AMD) <bp(a)alien8.de> CommitterDate: Tue, 28 Oct 2025 12:37:49 +01:00 x86/CPU/AMD: Add RDSEED fix for Zen5 There's an issue with RDSEED's 16-bit and 32-bit register output variants on Zen5 which return a random value of 0 "at a rate inconsistent with randomness while incorrectly signaling success (CF=1)". Search the web for AMD-SB-7055 for more detail. Add a fix glue which checks microcode revisions. [ bp: Add microcode revisions checking, rewrite. ] Cc: stable(a)vger.kernel.org Signed-off-by: Gregory Price <gourry(a)gourry.net> Signed-off-by: Borislav Petkov (AMD) <bp(a)alien8.de> Link: https://lore.kernel.org/r/20251018024010.4112396-1-gourry@gourry.net --- arch/x86/kernel/cpu/amd.c | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/arch/x86/kernel/cpu/amd.c b/arch/x86/kernel/cpu/amd.c index ccaa51c..bc29be6 100644 --- a/arch/x86/kernel/cpu/amd.c +++ b/arch/x86/kernel/cpu/amd.c @@ -1035,8 +1035,18 @@ static void init_amd_zen4(struct cpuinfo_x86 *c) } } +static const struct x86_cpu_id zen5_rdseed_microcode[] = { + ZEN_MODEL_STEP_UCODE(0x1a, 0x02, 0x1, 0x0b00215a), + ZEN_MODEL_STEP_UCODE(0x1a, 0x11, 0x0, 0x0b101054), +}; + static void init_amd_zen5(struct cpuinfo_x86 *c) { + if (!x86_match_min_microcode_rev(zen5_rdseed_microcode)) { + clear_cpu_cap(c, X86_FEATURE_RDSEED); + msr_clear_bit(MSR_AMD64_CPUID_FN_7, 18); + pr_emerg_once("RDSEED32 is broken. Disabling the corresponding CPUID bit.\n"); + } } static void init_amd(struct cpuinfo_x86 *c)

1 week, 3 days

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FAILED: patch "[PATCH] mm/mempool: fix poisoning order>0 pages with HIGHMEM" failed to apply to 5.4-stable tree

by gregkh＠linuxfoundation.org

The patch below does not apply to the 5.4-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <stable(a)vger.kernel.org>. To reproduce the conflict and resubmit, you may use the following commands: git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-5.4.y git checkout FETCH_HEAD git cherry-pick -x ec33b59542d96830e3c89845ff833cf7b25ef172 # <resolve conflicts, build, test, etc.> git commit -s git send-email --to '<stable(a)vger.kernel.org>' --in-reply-to '2025112438-stoppable-bribe-71e6@gregkh' --subject-prefix 'PATCH 5.4.y' HEAD^.. Possible dependencies: thanks, greg k-h ------------------ original commit in Linus's tree ------------------ From ec33b59542d96830e3c89845ff833cf7b25ef172 Mon Sep 17 00:00:00 2001 From: Vlastimil Babka <vbabka(a)suse.cz> Date: Thu, 13 Nov 2025 19:54:35 +0100 Subject: [PATCH] mm/mempool: fix poisoning order>0 pages with HIGHMEM The kernel test has reported: BUG: unable to handle page fault for address: fffba000 #PF: supervisor write access in kernel mode #PF: error_code(0x0002) - not-present page *pde = 03171067 *pte = 00000000 Oops: Oops: 0002 [#1] CPU: 0 UID: 0 PID: 1 Comm: swapper/0 Tainted: G T 6.18.0-rc2-00031-gec7f31b2a2d3 #1 NONE a1d066dfe789f54bc7645c7989957d2bdee593ca Tainted: [T]=RANDSTRUCT Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 EIP: memset (arch/x86/include/asm/string_32.h:168 arch/x86/lib/memcpy_32.c:17) Code: a5 8b 4d f4 83 e1 03 74 02 f3 a4 83 c4 04 5e 5f 5d 2e e9 73 41 01 00 90 90 90 3e 8d 74 26 00 55 89 e5 57 56 89 c6 89 d0 89 f7 <f3> aa 89 f0 5e 5f 5d 2e e9 53 41 01 00 cc cc cc 55 89 e5 53 57 56 EAX: 0000006b EBX: 00000015 ECX: 001fefff EDX: 0000006b ESI: fffb9000 EDI: fffba000 EBP: c611fbf0 ESP: c611fbe8 DS: 007b ES: 007b FS: 0000 GS: 0000 SS: 0068 EFLAGS: 00010287 CR0: 80050033 CR2: fffba000 CR3: 0316e000 CR4: 00040690 Call Trace: poison_element (mm/mempool.c:83 mm/mempool.c:102) mempool_init_node (mm/mempool.c:142 mm/mempool.c:226) mempool_init_noprof (mm/mempool.c:250 (discriminator 1)) ? mempool_alloc_pages (mm/mempool.c:640) bio_integrity_initfn (block/bio-integrity.c:483 (discriminator 8)) ? mempool_alloc_pages (mm/mempool.c:640) do_one_initcall (init/main.c:1283) Christoph found out this is due to the poisoning code not dealing properly with CONFIG_HIGHMEM because only the first page is mapped but then the whole potentially high-order page is accessed. We could give up on HIGHMEM here, but it's straightforward to fix this with a loop that's mapping, poisoning or checking and unmapping individual pages. Reported-by: kernel test robot <oliver.sang(a)intel.com> Closes: https://lore.kernel.org/oe-lkp/202511111411.9ebfa1ba-lkp@intel.com Analyzed-by: Christoph Hellwig <hch(a)lst.de> Fixes: bdfedb76f4f5 ("mm, mempool: poison elements backed by slab allocator") Cc: stable(a)vger.kernel.org Tested-by: kernel test robot <oliver.sang(a)intel.com> Reviewed-by: Christoph Hellwig <hch(a)lst.de> Link: https://patch.msgid.link/20251113-mempool-poison-v1-1-233b3ef984c3@suse.cz Signed-off-by: Vlastimil Babka <vbabka(a)suse.cz> diff --git a/mm/mempool.c b/mm/mempool.c index 1c38e873e546..d7bbf1189db9 100644 --- a/mm/mempool.c +++ b/mm/mempool.c @@ -68,10 +68,20 @@ static void check_element(mempool_t *pool, void *element) } else if (pool->free == mempool_free_pages) { /* Mempools backed by page allocator */ int order = (int)(long)pool->pool_data; - void *addr = kmap_local_page((struct page *)element); - __check_element(pool, addr, 1UL << (PAGE_SHIFT + order)); - kunmap_local(addr); +#ifdef CONFIG_HIGHMEM + for (int i = 0; i < (1 << order); i++) { + struct page *page = (struct page *)element; + void *addr = kmap_local_page(page + i); + + __check_element(pool, addr, PAGE_SIZE); + kunmap_local(addr); + } +#else + void *addr = page_address((struct page *)element); + + __check_element(pool, addr, PAGE_SIZE << order); +#endif } } @@ -97,10 +107,20 @@ static void poison_element(mempool_t *pool, void *element) } else if (pool->alloc == mempool_alloc_pages) { /* Mempools backed by page allocator */ int order = (int)(long)pool->pool_data; - void *addr = kmap_local_page((struct page *)element); - __poison_element(addr, 1UL << (PAGE_SHIFT + order)); - kunmap_local(addr); +#ifdef CONFIG_HIGHMEM + for (int i = 0; i < (1 << order); i++) { + struct page *page = (struct page *)element; + void *addr = kmap_local_page(page + i); + + __poison_element(addr, PAGE_SIZE); + kunmap_local(addr); + } +#else + void *addr = page_address((struct page *)element); + + __poison_element(addr, PAGE_SIZE << order); +#endif } } #else /* CONFIG_SLUB_DEBUG_ON */

1 week, 3 days

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FAILED: patch "[PATCH] mm/mempool: fix poisoning order>0 pages with HIGHMEM" failed to apply to 5.10-stable tree

by gregkh＠linuxfoundation.org

The patch below does not apply to the 5.10-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <stable(a)vger.kernel.org>. To reproduce the conflict and resubmit, you may use the following commands: git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-5.10.y git checkout FETCH_HEAD git cherry-pick -x ec33b59542d96830e3c89845ff833cf7b25ef172 # <resolve conflicts, build, test, etc.> git commit -s git send-email --to '<stable(a)vger.kernel.org>' --in-reply-to '2025112437-sandpaper-almighty-8e37@gregkh' --subject-prefix 'PATCH 5.10.y' HEAD^.. Possible dependencies: thanks, greg k-h ------------------ original commit in Linus's tree ------------------ From ec33b59542d96830e3c89845ff833cf7b25ef172 Mon Sep 17 00:00:00 2001 From: Vlastimil Babka <vbabka(a)suse.cz> Date: Thu, 13 Nov 2025 19:54:35 +0100 Subject: [PATCH] mm/mempool: fix poisoning order>0 pages with HIGHMEM The kernel test has reported: BUG: unable to handle page fault for address: fffba000 #PF: supervisor write access in kernel mode #PF: error_code(0x0002) - not-present page *pde = 03171067 *pte = 00000000 Oops: Oops: 0002 [#1] CPU: 0 UID: 0 PID: 1 Comm: swapper/0 Tainted: G T 6.18.0-rc2-00031-gec7f31b2a2d3 #1 NONE a1d066dfe789f54bc7645c7989957d2bdee593ca Tainted: [T]=RANDSTRUCT Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 EIP: memset (arch/x86/include/asm/string_32.h:168 arch/x86/lib/memcpy_32.c:17) Code: a5 8b 4d f4 83 e1 03 74 02 f3 a4 83 c4 04 5e 5f 5d 2e e9 73 41 01 00 90 90 90 3e 8d 74 26 00 55 89 e5 57 56 89 c6 89 d0 89 f7 <f3> aa 89 f0 5e 5f 5d 2e e9 53 41 01 00 cc cc cc 55 89 e5 53 57 56 EAX: 0000006b EBX: 00000015 ECX: 001fefff EDX: 0000006b ESI: fffb9000 EDI: fffba000 EBP: c611fbf0 ESP: c611fbe8 DS: 007b ES: 007b FS: 0000 GS: 0000 SS: 0068 EFLAGS: 00010287 CR0: 80050033 CR2: fffba000 CR3: 0316e000 CR4: 00040690 Call Trace: poison_element (mm/mempool.c:83 mm/mempool.c:102) mempool_init_node (mm/mempool.c:142 mm/mempool.c:226) mempool_init_noprof (mm/mempool.c:250 (discriminator 1)) ? mempool_alloc_pages (mm/mempool.c:640) bio_integrity_initfn (block/bio-integrity.c:483 (discriminator 8)) ? mempool_alloc_pages (mm/mempool.c:640) do_one_initcall (init/main.c:1283) Christoph found out this is due to the poisoning code not dealing properly with CONFIG_HIGHMEM because only the first page is mapped but then the whole potentially high-order page is accessed. We could give up on HIGHMEM here, but it's straightforward to fix this with a loop that's mapping, poisoning or checking and unmapping individual pages. Reported-by: kernel test robot <oliver.sang(a)intel.com> Closes: https://lore.kernel.org/oe-lkp/202511111411.9ebfa1ba-lkp@intel.com Analyzed-by: Christoph Hellwig <hch(a)lst.de> Fixes: bdfedb76f4f5 ("mm, mempool: poison elements backed by slab allocator") Cc: stable(a)vger.kernel.org Tested-by: kernel test robot <oliver.sang(a)intel.com> Reviewed-by: Christoph Hellwig <hch(a)lst.de> Link: https://patch.msgid.link/20251113-mempool-poison-v1-1-233b3ef984c3@suse.cz Signed-off-by: Vlastimil Babka <vbabka(a)suse.cz> diff --git a/mm/mempool.c b/mm/mempool.c index 1c38e873e546..d7bbf1189db9 100644 --- a/mm/mempool.c +++ b/mm/mempool.c @@ -68,10 +68,20 @@ static void check_element(mempool_t *pool, void *element) } else if (pool->free == mempool_free_pages) { /* Mempools backed by page allocator */ int order = (int)(long)pool->pool_data; - void *addr = kmap_local_page((struct page *)element); - __check_element(pool, addr, 1UL << (PAGE_SHIFT + order)); - kunmap_local(addr); +#ifdef CONFIG_HIGHMEM + for (int i = 0; i < (1 << order); i++) { + struct page *page = (struct page *)element; + void *addr = kmap_local_page(page + i); + + __check_element(pool, addr, PAGE_SIZE); + kunmap_local(addr); + } +#else + void *addr = page_address((struct page *)element); + + __check_element(pool, addr, PAGE_SIZE << order); +#endif } } @@ -97,10 +107,20 @@ static void poison_element(mempool_t *pool, void *element) } else if (pool->alloc == mempool_alloc_pages) { /* Mempools backed by page allocator */ int order = (int)(long)pool->pool_data; - void *addr = kmap_local_page((struct page *)element); - __poison_element(addr, 1UL << (PAGE_SHIFT + order)); - kunmap_local(addr); +#ifdef CONFIG_HIGHMEM + for (int i = 0; i < (1 << order); i++) { + struct page *page = (struct page *)element; + void *addr = kmap_local_page(page + i); + + __poison_element(addr, PAGE_SIZE); + kunmap_local(addr); + } +#else + void *addr = page_address((struct page *)element); + + __poison_element(addr, PAGE_SIZE << order); +#endif } } #else /* CONFIG_SLUB_DEBUG_ON */

1 week, 3 days

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FAILED: patch "[PATCH] mm/mempool: fix poisoning order>0 pages with HIGHMEM" failed to apply to 5.15-stable tree

by gregkh＠linuxfoundation.org

The patch below does not apply to the 5.15-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <stable(a)vger.kernel.org>. To reproduce the conflict and resubmit, you may use the following commands: git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-5.15.y git checkout FETCH_HEAD git cherry-pick -x ec33b59542d96830e3c89845ff833cf7b25ef172 # <resolve conflicts, build, test, etc.> git commit -s git send-email --to '<stable(a)vger.kernel.org>' --in-reply-to '2025112436-unabashed-tacky-b8b3@gregkh' --subject-prefix 'PATCH 5.15.y' HEAD^.. Possible dependencies: thanks, greg k-h ------------------ original commit in Linus's tree ------------------ From ec33b59542d96830e3c89845ff833cf7b25ef172 Mon Sep 17 00:00:00 2001 From: Vlastimil Babka <vbabka(a)suse.cz> Date: Thu, 13 Nov 2025 19:54:35 +0100 Subject: [PATCH] mm/mempool: fix poisoning order>0 pages with HIGHMEM The kernel test has reported: BUG: unable to handle page fault for address: fffba000 #PF: supervisor write access in kernel mode #PF: error_code(0x0002) - not-present page *pde = 03171067 *pte = 00000000 Oops: Oops: 0002 [#1] CPU: 0 UID: 0 PID: 1 Comm: swapper/0 Tainted: G T 6.18.0-rc2-00031-gec7f31b2a2d3 #1 NONE a1d066dfe789f54bc7645c7989957d2bdee593ca Tainted: [T]=RANDSTRUCT Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 EIP: memset (arch/x86/include/asm/string_32.h:168 arch/x86/lib/memcpy_32.c:17) Code: a5 8b 4d f4 83 e1 03 74 02 f3 a4 83 c4 04 5e 5f 5d 2e e9 73 41 01 00 90 90 90 3e 8d 74 26 00 55 89 e5 57 56 89 c6 89 d0 89 f7 <f3> aa 89 f0 5e 5f 5d 2e e9 53 41 01 00 cc cc cc 55 89 e5 53 57 56 EAX: 0000006b EBX: 00000015 ECX: 001fefff EDX: 0000006b ESI: fffb9000 EDI: fffba000 EBP: c611fbf0 ESP: c611fbe8 DS: 007b ES: 007b FS: 0000 GS: 0000 SS: 0068 EFLAGS: 00010287 CR0: 80050033 CR2: fffba000 CR3: 0316e000 CR4: 00040690 Call Trace: poison_element (mm/mempool.c:83 mm/mempool.c:102) mempool_init_node (mm/mempool.c:142 mm/mempool.c:226) mempool_init_noprof (mm/mempool.c:250 (discriminator 1)) ? mempool_alloc_pages (mm/mempool.c:640) bio_integrity_initfn (block/bio-integrity.c:483 (discriminator 8)) ? mempool_alloc_pages (mm/mempool.c:640) do_one_initcall (init/main.c:1283) Christoph found out this is due to the poisoning code not dealing properly with CONFIG_HIGHMEM because only the first page is mapped but then the whole potentially high-order page is accessed. We could give up on HIGHMEM here, but it's straightforward to fix this with a loop that's mapping, poisoning or checking and unmapping individual pages. Reported-by: kernel test robot <oliver.sang(a)intel.com> Closes: https://lore.kernel.org/oe-lkp/202511111411.9ebfa1ba-lkp@intel.com Analyzed-by: Christoph Hellwig <hch(a)lst.de> Fixes: bdfedb76f4f5 ("mm, mempool: poison elements backed by slab allocator") Cc: stable(a)vger.kernel.org Tested-by: kernel test robot <oliver.sang(a)intel.com> Reviewed-by: Christoph Hellwig <hch(a)lst.de> Link: https://patch.msgid.link/20251113-mempool-poison-v1-1-233b3ef984c3@suse.cz Signed-off-by: Vlastimil Babka <vbabka(a)suse.cz> diff --git a/mm/mempool.c b/mm/mempool.c index 1c38e873e546..d7bbf1189db9 100644 --- a/mm/mempool.c +++ b/mm/mempool.c @@ -68,10 +68,20 @@ static void check_element(mempool_t *pool, void *element) } else if (pool->free == mempool_free_pages) { /* Mempools backed by page allocator */ int order = (int)(long)pool->pool_data; - void *addr = kmap_local_page((struct page *)element); - __check_element(pool, addr, 1UL << (PAGE_SHIFT + order)); - kunmap_local(addr); +#ifdef CONFIG_HIGHMEM + for (int i = 0; i < (1 << order); i++) { + struct page *page = (struct page *)element; + void *addr = kmap_local_page(page + i); + + __check_element(pool, addr, PAGE_SIZE); + kunmap_local(addr); + } +#else + void *addr = page_address((struct page *)element); + + __check_element(pool, addr, PAGE_SIZE << order); +#endif } } @@ -97,10 +107,20 @@ static void poison_element(mempool_t *pool, void *element) } else if (pool->alloc == mempool_alloc_pages) { /* Mempools backed by page allocator */ int order = (int)(long)pool->pool_data; - void *addr = kmap_local_page((struct page *)element); - __poison_element(addr, 1UL << (PAGE_SHIFT + order)); - kunmap_local(addr); +#ifdef CONFIG_HIGHMEM + for (int i = 0; i < (1 << order); i++) { + struct page *page = (struct page *)element; + void *addr = kmap_local_page(page + i); + + __poison_element(addr, PAGE_SIZE); + kunmap_local(addr); + } +#else + void *addr = page_address((struct page *)element); + + __poison_element(addr, PAGE_SIZE << order); +#endif } } #else /* CONFIG_SLUB_DEBUG_ON */

1 week, 3 days

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FAILED: patch "[PATCH] dt-bindings: pinctrl: toshiba,visconti: Fix number of items" failed to apply to 5.10-stable tree

by gregkh＠linuxfoundation.org

The patch below does not apply to the 5.10-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <stable(a)vger.kernel.org>. To reproduce the conflict and resubmit, you may use the following commands: git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-5.10.y git checkout FETCH_HEAD git cherry-pick -x 316e361b5d2cdeb8d778983794a1c6eadcb26814 # <resolve conflicts, build, test, etc.> git commit -s git send-email --to '<stable(a)vger.kernel.org>' --in-reply-to '2025112405-vixen-monogamy-fb80@gregkh' --subject-prefix 'PATCH 5.10.y' HEAD^.. Possible dependencies: thanks, greg k-h ------------------ original commit in Linus's tree ------------------ From 316e361b5d2cdeb8d778983794a1c6eadcb26814 Mon Sep 17 00:00:00 2001 From: Krzysztof Kozlowski <krzk(a)kernel.org> Date: Wed, 22 Oct 2025 15:34:26 +0200 Subject: [PATCH] dt-bindings: pinctrl: toshiba,visconti: Fix number of items in groups The "groups" property can hold multiple entries (e.g. toshiba/tmpv7708-rm-mbrc.dts file), so allow that by dropping incorrect type (pinmux-node.yaml schema already defines that as string-array) and adding constraints for items. This fixes dtbs_check warnings like: toshiba/tmpv7708-rm-mbrc.dtb: pinctrl@24190000 (toshiba,tmpv7708-pinctrl): pwm-pins:groups: ['pwm0_gpio16_grp', 'pwm1_gpio17_grp', 'pwm2_gpio18_grp', 'pwm3_gpio19_grp'] is too long Fixes: 1825c1fe0057 ("pinctrl: Add DT bindings for Toshiba Visconti TMPV7700 SoC") Cc: stable(a)vger.kernel.org Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski(a)linaro.org> Acked-by: Conor Dooley <conor.dooley(a)microchip.com> Signed-off-by: Linus Walleij <linus.walleij(a)linaro.org> diff --git a/Documentation/devicetree/bindings/pinctrl/toshiba,visconti-pinctrl.yaml b/Documentation/devicetree/bindings/pinctrl/toshiba,visconti-pinctrl.yaml index 19d47fd414bc..ce04d2eadec9 100644 --- a/Documentation/devicetree/bindings/pinctrl/toshiba,visconti-pinctrl.yaml +++ b/Documentation/devicetree/bindings/pinctrl/toshiba,visconti-pinctrl.yaml @@ -50,18 +50,20 @@ patternProperties: groups: description: Name of the pin group to use for the functions. - $ref: /schemas/types.yaml#/definitions/string - enum: [i2c0_grp, i2c1_grp, i2c2_grp, i2c3_grp, i2c4_grp, - i2c5_grp, i2c6_grp, i2c7_grp, i2c8_grp, - spi0_grp, spi0_cs0_grp, spi0_cs1_grp, spi0_cs2_grp, - spi1_grp, spi2_grp, spi3_grp, spi4_grp, spi5_grp, spi6_grp, - uart0_grp, uart1_grp, uart2_grp, uart3_grp, - pwm0_gpio4_grp, pwm0_gpio8_grp, pwm0_gpio12_grp, - pwm0_gpio16_grp, pwm1_gpio5_grp, pwm1_gpio9_grp, - pwm1_gpio13_grp, pwm1_gpio17_grp, pwm2_gpio6_grp, - pwm2_gpio10_grp, pwm2_gpio14_grp, pwm2_gpio18_grp, - pwm3_gpio7_grp, pwm3_gpio11_grp, pwm3_gpio15_grp, - pwm3_gpio19_grp, pcmif_out_grp, pcmif_in_grp] + items: + enum: [i2c0_grp, i2c1_grp, i2c2_grp, i2c3_grp, i2c4_grp, + i2c5_grp, i2c6_grp, i2c7_grp, i2c8_grp, + spi0_grp, spi0_cs0_grp, spi0_cs1_grp, spi0_cs2_grp, + spi1_grp, spi2_grp, spi3_grp, spi4_grp, spi5_grp, spi6_grp, + uart0_grp, uart1_grp, uart2_grp, uart3_grp, + pwm0_gpio4_grp, pwm0_gpio8_grp, pwm0_gpio12_grp, + pwm0_gpio16_grp, pwm1_gpio5_grp, pwm1_gpio9_grp, + pwm1_gpio13_grp, pwm1_gpio17_grp, pwm2_gpio6_grp, + pwm2_gpio10_grp, pwm2_gpio14_grp, pwm2_gpio18_grp, + pwm3_gpio7_grp, pwm3_gpio11_grp, pwm3_gpio15_grp, + pwm3_gpio19_grp, pcmif_out_grp, pcmif_in_grp] + minItems: 1 + maxItems: 8 drive-strength: enum: [2, 4, 6, 8, 16, 24, 32]

1 week, 3 days

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FAILED: patch "[PATCH] dt-bindings: pinctrl: toshiba,visconti: Fix number of items" failed to apply to 5.15-stable tree

by gregkh＠linuxfoundation.org

The patch below does not apply to the 5.15-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <stable(a)vger.kernel.org>. To reproduce the conflict and resubmit, you may use the following commands: git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-5.15.y git checkout FETCH_HEAD git cherry-pick -x 316e361b5d2cdeb8d778983794a1c6eadcb26814 # <resolve conflicts, build, test, etc.> git commit -s git send-email --to '<stable(a)vger.kernel.org>' --in-reply-to '2025112404-radial-yoyo-25b9@gregkh' --subject-prefix 'PATCH 5.15.y' HEAD^.. Possible dependencies: thanks, greg k-h ------------------ original commit in Linus's tree ------------------ From 316e361b5d2cdeb8d778983794a1c6eadcb26814 Mon Sep 17 00:00:00 2001 From: Krzysztof Kozlowski <krzk(a)kernel.org> Date: Wed, 22 Oct 2025 15:34:26 +0200 Subject: [PATCH] dt-bindings: pinctrl: toshiba,visconti: Fix number of items in groups The "groups" property can hold multiple entries (e.g. toshiba/tmpv7708-rm-mbrc.dts file), so allow that by dropping incorrect type (pinmux-node.yaml schema already defines that as string-array) and adding constraints for items. This fixes dtbs_check warnings like: toshiba/tmpv7708-rm-mbrc.dtb: pinctrl@24190000 (toshiba,tmpv7708-pinctrl): pwm-pins:groups: ['pwm0_gpio16_grp', 'pwm1_gpio17_grp', 'pwm2_gpio18_grp', 'pwm3_gpio19_grp'] is too long Fixes: 1825c1fe0057 ("pinctrl: Add DT bindings for Toshiba Visconti TMPV7700 SoC") Cc: stable(a)vger.kernel.org Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski(a)linaro.org> Acked-by: Conor Dooley <conor.dooley(a)microchip.com> Signed-off-by: Linus Walleij <linus.walleij(a)linaro.org> diff --git a/Documentation/devicetree/bindings/pinctrl/toshiba,visconti-pinctrl.yaml b/Documentation/devicetree/bindings/pinctrl/toshiba,visconti-pinctrl.yaml index 19d47fd414bc..ce04d2eadec9 100644 --- a/Documentation/devicetree/bindings/pinctrl/toshiba,visconti-pinctrl.yaml +++ b/Documentation/devicetree/bindings/pinctrl/toshiba,visconti-pinctrl.yaml @@ -50,18 +50,20 @@ patternProperties: groups: description: Name of the pin group to use for the functions. - $ref: /schemas/types.yaml#/definitions/string - enum: [i2c0_grp, i2c1_grp, i2c2_grp, i2c3_grp, i2c4_grp, - i2c5_grp, i2c6_grp, i2c7_grp, i2c8_grp, - spi0_grp, spi0_cs0_grp, spi0_cs1_grp, spi0_cs2_grp, - spi1_grp, spi2_grp, spi3_grp, spi4_grp, spi5_grp, spi6_grp, - uart0_grp, uart1_grp, uart2_grp, uart3_grp, - pwm0_gpio4_grp, pwm0_gpio8_grp, pwm0_gpio12_grp, - pwm0_gpio16_grp, pwm1_gpio5_grp, pwm1_gpio9_grp, - pwm1_gpio13_grp, pwm1_gpio17_grp, pwm2_gpio6_grp, - pwm2_gpio10_grp, pwm2_gpio14_grp, pwm2_gpio18_grp, - pwm3_gpio7_grp, pwm3_gpio11_grp, pwm3_gpio15_grp, - pwm3_gpio19_grp, pcmif_out_grp, pcmif_in_grp] + items: + enum: [i2c0_grp, i2c1_grp, i2c2_grp, i2c3_grp, i2c4_grp, + i2c5_grp, i2c6_grp, i2c7_grp, i2c8_grp, + spi0_grp, spi0_cs0_grp, spi0_cs1_grp, spi0_cs2_grp, + spi1_grp, spi2_grp, spi3_grp, spi4_grp, spi5_grp, spi6_grp, + uart0_grp, uart1_grp, uart2_grp, uart3_grp, + pwm0_gpio4_grp, pwm0_gpio8_grp, pwm0_gpio12_grp, + pwm0_gpio16_grp, pwm1_gpio5_grp, pwm1_gpio9_grp, + pwm1_gpio13_grp, pwm1_gpio17_grp, pwm2_gpio6_grp, + pwm2_gpio10_grp, pwm2_gpio14_grp, pwm2_gpio18_grp, + pwm3_gpio7_grp, pwm3_gpio11_grp, pwm3_gpio15_grp, + pwm3_gpio19_grp, pcmif_out_grp, pcmif_in_grp] + minItems: 1 + maxItems: 8 drive-strength: enum: [2, 4, 6, 8, 16, 24, 32]

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FAILED: patch "[PATCH] mm/mempool: fix poisoning order>0 pages with HIGHMEM" failed to apply to 6.1-stable tree

by gregkh＠linuxfoundation.org

The patch below does not apply to the 6.1-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <stable(a)vger.kernel.org>. To reproduce the conflict and resubmit, you may use the following commands: git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-6.1.y git checkout FETCH_HEAD git cherry-pick -x ec33b59542d96830e3c89845ff833cf7b25ef172 # <resolve conflicts, build, test, etc.> git commit -s git send-email --to '<stable(a)vger.kernel.org>' --in-reply-to '2025112435-agile-sprawl-f420@gregkh' --subject-prefix 'PATCH 6.1.y' HEAD^.. Possible dependencies: thanks, greg k-h ------------------ original commit in Linus's tree ------------------ From ec33b59542d96830e3c89845ff833cf7b25ef172 Mon Sep 17 00:00:00 2001 From: Vlastimil Babka <vbabka(a)suse.cz> Date: Thu, 13 Nov 2025 19:54:35 +0100 Subject: [PATCH] mm/mempool: fix poisoning order>0 pages with HIGHMEM The kernel test has reported: BUG: unable to handle page fault for address: fffba000 #PF: supervisor write access in kernel mode #PF: error_code(0x0002) - not-present page *pde = 03171067 *pte = 00000000 Oops: Oops: 0002 [#1] CPU: 0 UID: 0 PID: 1 Comm: swapper/0 Tainted: G T 6.18.0-rc2-00031-gec7f31b2a2d3 #1 NONE a1d066dfe789f54bc7645c7989957d2bdee593ca Tainted: [T]=RANDSTRUCT Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 EIP: memset (arch/x86/include/asm/string_32.h:168 arch/x86/lib/memcpy_32.c:17) Code: a5 8b 4d f4 83 e1 03 74 02 f3 a4 83 c4 04 5e 5f 5d 2e e9 73 41 01 00 90 90 90 3e 8d 74 26 00 55 89 e5 57 56 89 c6 89 d0 89 f7 <f3> aa 89 f0 5e 5f 5d 2e e9 53 41 01 00 cc cc cc 55 89 e5 53 57 56 EAX: 0000006b EBX: 00000015 ECX: 001fefff EDX: 0000006b ESI: fffb9000 EDI: fffba000 EBP: c611fbf0 ESP: c611fbe8 DS: 007b ES: 007b FS: 0000 GS: 0000 SS: 0068 EFLAGS: 00010287 CR0: 80050033 CR2: fffba000 CR3: 0316e000 CR4: 00040690 Call Trace: poison_element (mm/mempool.c:83 mm/mempool.c:102) mempool_init_node (mm/mempool.c:142 mm/mempool.c:226) mempool_init_noprof (mm/mempool.c:250 (discriminator 1)) ? mempool_alloc_pages (mm/mempool.c:640) bio_integrity_initfn (block/bio-integrity.c:483 (discriminator 8)) ? mempool_alloc_pages (mm/mempool.c:640) do_one_initcall (init/main.c:1283) Christoph found out this is due to the poisoning code not dealing properly with CONFIG_HIGHMEM because only the first page is mapped but then the whole potentially high-order page is accessed. We could give up on HIGHMEM here, but it's straightforward to fix this with a loop that's mapping, poisoning or checking and unmapping individual pages. Reported-by: kernel test robot <oliver.sang(a)intel.com> Closes: https://lore.kernel.org/oe-lkp/202511111411.9ebfa1ba-lkp@intel.com Analyzed-by: Christoph Hellwig <hch(a)lst.de> Fixes: bdfedb76f4f5 ("mm, mempool: poison elements backed by slab allocator") Cc: stable(a)vger.kernel.org Tested-by: kernel test robot <oliver.sang(a)intel.com> Reviewed-by: Christoph Hellwig <hch(a)lst.de> Link: https://patch.msgid.link/20251113-mempool-poison-v1-1-233b3ef984c3@suse.cz Signed-off-by: Vlastimil Babka <vbabka(a)suse.cz> diff --git a/mm/mempool.c b/mm/mempool.c index 1c38e873e546..d7bbf1189db9 100644 --- a/mm/mempool.c +++ b/mm/mempool.c @@ -68,10 +68,20 @@ static void check_element(mempool_t *pool, void *element) } else if (pool->free == mempool_free_pages) { /* Mempools backed by page allocator */ int order = (int)(long)pool->pool_data; - void *addr = kmap_local_page((struct page *)element); - __check_element(pool, addr, 1UL << (PAGE_SHIFT + order)); - kunmap_local(addr); +#ifdef CONFIG_HIGHMEM + for (int i = 0; i < (1 << order); i++) { + struct page *page = (struct page *)element; + void *addr = kmap_local_page(page + i); + + __check_element(pool, addr, PAGE_SIZE); + kunmap_local(addr); + } +#else + void *addr = page_address((struct page *)element); + + __check_element(pool, addr, PAGE_SIZE << order); +#endif } } @@ -97,10 +107,20 @@ static void poison_element(mempool_t *pool, void *element) } else if (pool->alloc == mempool_alloc_pages) { /* Mempools backed by page allocator */ int order = (int)(long)pool->pool_data; - void *addr = kmap_local_page((struct page *)element); - __poison_element(addr, 1UL << (PAGE_SHIFT + order)); - kunmap_local(addr); +#ifdef CONFIG_HIGHMEM + for (int i = 0; i < (1 << order); i++) { + struct page *page = (struct page *)element; + void *addr = kmap_local_page(page + i); + + __poison_element(addr, PAGE_SIZE); + kunmap_local(addr); + } +#else + void *addr = page_address((struct page *)element); + + __poison_element(addr, PAGE_SIZE << order); +#endif } } #else /* CONFIG_SLUB_DEBUG_ON */

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FAILED: patch "[PATCH] dt-bindings: pinctrl: toshiba,visconti: Fix number of items" failed to apply to 6.1-stable tree

by gregkh＠linuxfoundation.org

The patch below does not apply to the 6.1-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <stable(a)vger.kernel.org>. To reproduce the conflict and resubmit, you may use the following commands: git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-6.1.y git checkout FETCH_HEAD git cherry-pick -x 316e361b5d2cdeb8d778983794a1c6eadcb26814 # <resolve conflicts, build, test, etc.> git commit -s git send-email --to '<stable(a)vger.kernel.org>' --in-reply-to '2025112404-uninsured-retorted-4758@gregkh' --subject-prefix 'PATCH 6.1.y' HEAD^.. Possible dependencies: thanks, greg k-h ------------------ original commit in Linus's tree ------------------ From 316e361b5d2cdeb8d778983794a1c6eadcb26814 Mon Sep 17 00:00:00 2001 From: Krzysztof Kozlowski <krzk(a)kernel.org> Date: Wed, 22 Oct 2025 15:34:26 +0200 Subject: [PATCH] dt-bindings: pinctrl: toshiba,visconti: Fix number of items in groups The "groups" property can hold multiple entries (e.g. toshiba/tmpv7708-rm-mbrc.dts file), so allow that by dropping incorrect type (pinmux-node.yaml schema already defines that as string-array) and adding constraints for items. This fixes dtbs_check warnings like: toshiba/tmpv7708-rm-mbrc.dtb: pinctrl@24190000 (toshiba,tmpv7708-pinctrl): pwm-pins:groups: ['pwm0_gpio16_grp', 'pwm1_gpio17_grp', 'pwm2_gpio18_grp', 'pwm3_gpio19_grp'] is too long Fixes: 1825c1fe0057 ("pinctrl: Add DT bindings for Toshiba Visconti TMPV7700 SoC") Cc: stable(a)vger.kernel.org Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski(a)linaro.org> Acked-by: Conor Dooley <conor.dooley(a)microchip.com> Signed-off-by: Linus Walleij <linus.walleij(a)linaro.org> diff --git a/Documentation/devicetree/bindings/pinctrl/toshiba,visconti-pinctrl.yaml b/Documentation/devicetree/bindings/pinctrl/toshiba,visconti-pinctrl.yaml index 19d47fd414bc..ce04d2eadec9 100644 --- a/Documentation/devicetree/bindings/pinctrl/toshiba,visconti-pinctrl.yaml +++ b/Documentation/devicetree/bindings/pinctrl/toshiba,visconti-pinctrl.yaml @@ -50,18 +50,20 @@ patternProperties: groups: description: Name of the pin group to use for the functions. - $ref: /schemas/types.yaml#/definitions/string - enum: [i2c0_grp, i2c1_grp, i2c2_grp, i2c3_grp, i2c4_grp, - i2c5_grp, i2c6_grp, i2c7_grp, i2c8_grp, - spi0_grp, spi0_cs0_grp, spi0_cs1_grp, spi0_cs2_grp, - spi1_grp, spi2_grp, spi3_grp, spi4_grp, spi5_grp, spi6_grp, - uart0_grp, uart1_grp, uart2_grp, uart3_grp, - pwm0_gpio4_grp, pwm0_gpio8_grp, pwm0_gpio12_grp, - pwm0_gpio16_grp, pwm1_gpio5_grp, pwm1_gpio9_grp, - pwm1_gpio13_grp, pwm1_gpio17_grp, pwm2_gpio6_grp, - pwm2_gpio10_grp, pwm2_gpio14_grp, pwm2_gpio18_grp, - pwm3_gpio7_grp, pwm3_gpio11_grp, pwm3_gpio15_grp, - pwm3_gpio19_grp, pcmif_out_grp, pcmif_in_grp] + items: + enum: [i2c0_grp, i2c1_grp, i2c2_grp, i2c3_grp, i2c4_grp, + i2c5_grp, i2c6_grp, i2c7_grp, i2c8_grp, + spi0_grp, spi0_cs0_grp, spi0_cs1_grp, spi0_cs2_grp, + spi1_grp, spi2_grp, spi3_grp, spi4_grp, spi5_grp, spi6_grp, + uart0_grp, uart1_grp, uart2_grp, uart3_grp, + pwm0_gpio4_grp, pwm0_gpio8_grp, pwm0_gpio12_grp, + pwm0_gpio16_grp, pwm1_gpio5_grp, pwm1_gpio9_grp, + pwm1_gpio13_grp, pwm1_gpio17_grp, pwm2_gpio6_grp, + pwm2_gpio10_grp, pwm2_gpio14_grp, pwm2_gpio18_grp, + pwm3_gpio7_grp, pwm3_gpio11_grp, pwm3_gpio15_grp, + pwm3_gpio19_grp, pcmif_out_grp, pcmif_in_grp] + minItems: 1 + maxItems: 8 drive-strength: enum: [2, 4, 6, 8, 16, 24, 32]

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