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[PATCH OLK-6.6 0/3] CVE-2025-39910
by Ze Zuo 05 Nov '25

05 Nov '25

CVE-2025-39910 Alexander Gordeev (1): kasan: avoid sleepable page allocation from atomic context Andrey Konovalov (1): kasan: use unchecked __memset internally Uladzislau Rezki (Sony) (1): mm/vmalloc, mm/kasan: respect gfp mask in kasan_populate_vmalloc() include/linux/kasan.h | 6 +-- mm/kasan/report.c | 4 +- mm/kasan/shadow.c | 111 ++++++++++++++++++++++++++++++++++++------ mm/vmalloc.c | 8 +-- 4 files changed, 105 insertions(+), 24 deletions(-) -- 2.25.1

2 4

[PATCH OLK-6.6 0/2] CVE-2025-38627
by Ze Zuo 05 Nov '25

05 Nov '25

CVE-2025-38627 Zhiguo Niu (2): f2fs: compress: change the first parameter of page_array_{alloc,free} to sbi f2fs: compress: fix UAF of f2fs_inode_info in f2fs_free_dic fs/f2fs/compress.c | 76 +++++++++++++++++++++++----------------------- fs/f2fs/f2fs.h | 2 ++ 2 files changed, 40 insertions(+), 38 deletions(-) -- 2.25.1

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[PATCH OLK-6.6] KVM: x86/xen: Fix cleanup logic in emulation of Xen schedop poll hypercalls
by Ze Zuo 05 Nov '25

05 Nov '25

From: Manuel Andreas <manuel.andreas(a)tum.de> mainline inclusion from mainline-v6.16-rc1 commit 5a53249d149f48b558368c5338b9921b76a12f8c category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/ICPD7K CVE: CVE-2025-38469 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?… -------------------------------- kvm_xen_schedop_poll does a kmalloc_array() when a VM polls the host for more than one event channel potr (nr_ports > 1). After the kmalloc_array(), the error paths need to go through the "out" label, but the call to kvm_read_guest_virt() does not. Fixes: 92c58965e965 ("KVM: x86/xen: Use kvm_read_guest_virt() instead of open-coding it badly") Reviewed-by: David Woodhouse <dwmw(a)amazon.co.uk> Signed-off-by: Manuel Andreas <manuel.andreas(a)tum.de> [Adjusted commit message. - Paolo] Signed-off-by: Paolo Bonzini <pbonzini(a)redhat.com> Signed-off-by: Ze Zuo <zuoze1(a)huawei.com> --- arch/x86/kvm/xen.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/x86/kvm/xen.c b/arch/x86/kvm/xen.c index 0ea6016ad132..eb62e05e8e63 100644 --- a/arch/x86/kvm/xen.c +++ b/arch/x86/kvm/xen.c @@ -1260,7 +1260,7 @@ static bool kvm_xen_schedop_poll(struct kvm_vcpu *vcpu, bool longmode, if (kvm_read_guest_virt(vcpu, (gva_t)sched_poll.ports, ports, sched_poll.nr_ports * sizeof(*ports), &e)) { *r = -EFAULT; - return true; + goto out; } for (i = 0; i < sched_poll.nr_ports; i++) { -- 2.25.1

2 1

[PATCH OLK-6.6] maple_tree: fix MA_STATE_PREALLOC flag in mas_preallocate()
by Ze Zuo 05 Nov '25

05 Nov '25

From: "Liam R. Howlett" <Liam.Howlett(a)oracle.com> stable inclusion from stable-v6.6.99 commit e63032e66bca1d06e600033f3369ba3db3af0870 category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/ICOXDR CVE: CVE-2025-38364 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id… -------------------------------- commit fba46a5d83ca8decb338722fb4899026d8d9ead2 upstream. Temporarily clear the preallocation flag when explicitly requesting allocations. Pre-existing allocations are already counted against the request through mas_node_count_gfp(), but the allocations will not happen if the MA_STATE_PREALLOC flag is set. This flag is meant to avoid re-allocating in bulk allocation mode, and to detect issues with preallocation calculations. The MA_STATE_PREALLOC flag should also always be set on zero allocations so that detection of underflow allocations will print a WARN_ON() during consumption. User visible effect of this flaw is a WARN_ON() followed by a null pointer dereference when subsequent requests for larger number of nodes is ignored, such as the vma merge retry in mmap_region() caused by drivers altering the vma flags (which happens in v6.6, at least) Link: https://lkml.kernel.org/r/20250616184521.3382795-3-Liam.Howlett@oracle.com Fixes: 54a611b60590 ("Maple Tree: add new data structure") Signed-off-by: Liam R. Howlett <Liam.Howlett(a)oracle.com> Reported-by: Zhaoyang Huang <zhaoyang.huang(a)unisoc.com> Reported-by: Hailong Liu <hailong.liu(a)oppo.com> Link: https://lore.kernel.org/all/1652f7eb-a51b-4fee-8058-c73af63bacd1@oppo.com/ Link: https://lore.kernel.org/all/20250428184058.1416274-1-Liam.Howlett@oracle.co… Link: https://lore.kernel.org/all/20250429014754.1479118-1-Liam.Howlett@oracle.co… Cc: Lorenzo Stoakes <lorenzo.stoakes(a)oracle.com> Cc: Suren Baghdasaryan <surenb(a)google.com> Cc: Hailong Liu <hailong.liu(a)oppo.com> Cc: zhangpeng.00(a)bytedance.com <zhangpeng.00(a)bytedance.com> Cc: Steve Kang <Steve.Kang(a)unisoc.com> Cc: Matthew Wilcox <willy(a)infradead.org> Cc: Sidhartha Kumar <sidhartha.kumar(a)oracle.com> Cc: <stable(a)vger.kernel.org> Signed-off-by: Andrew Morton <akpm(a)linux-foundation.org> Signed-off-by: Liam R. Howlett <Liam.Howlett(a)oracle.com> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> Conflicts: lib/maple_tree.c [context conflicts due to merged mainline 5143eecd2af2 ("lib/maple_tree.c: fix build error due to hotfix alteration")] Signed-off-by: Ze Zuo <zuoze1(a)huawei.com> --- lib/maple_tree.c | 13 ++++++++----- 1 file changed, 8 insertions(+), 5 deletions(-) diff --git a/lib/maple_tree.c b/lib/maple_tree.c index 88e478d6840c..cdec348e7820 100644 --- a/lib/maple_tree.c +++ b/lib/maple_tree.c @@ -5571,7 +5571,7 @@ int mas_preallocate(struct ma_state *mas, void *entry, gfp_t gfp) /* At this point, we are at the leaf node that needs to be altered. */ /* Exact fit, no nodes needed. */ if (wr_mas.r_min == mas->index && wr_mas.r_max == mas->last) - return 0; + goto set_flag; mas_wr_end_piv(&wr_mas); node_size = mas_wr_new_end(&wr_mas); @@ -5580,10 +5580,10 @@ int mas_preallocate(struct ma_state *mas, void *entry, gfp_t gfp) if (node_size == mas->end) { /* reuse node */ if (!mt_in_rcu(mas->tree)) - return 0; + goto set_flag; /* shifting boundary */ if (wr_mas.offset_end - mas->offset == 1) - return 0; + goto set_flag; } if (node_size >= mt_slots[wr_mas.type]) { @@ -5602,10 +5602,13 @@ int mas_preallocate(struct ma_state *mas, void *entry, gfp_t gfp) /* node store, slot store needs one node */ ask_now: + mas->mas_flags &= ~MA_STATE_PREALLOC; mas_node_count_gfp(mas, request, gfp); - mas->mas_flags |= MA_STATE_PREALLOC; - if (likely(!mas_is_err(mas))) + if (likely(!mas_is_err(mas))) { +set_flag: + mas->mas_flags |= MA_STATE_PREALLOC; return 0; + } mas_set_alloc_req(mas, 0); ret = xa_err(mas->node); -- 2.25.1

2 1

[PATCH OLK-6.6] ASoC: Intel: avs: Fix null-ptr-deref in avs_component_probe()
by Ze Zuo 05 Nov '25

05 Nov '25

From: Henry Martin <bsdhenrymartin(a)gmail.com> mainline inclusion from mainline-v6.15-rc3 commit 95f723cf141b95e3b3a5b92cf2ea98a863fe7275 category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/IC8J7I CVE: CVE-2025-37793 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?… -------------------------------- [ Upstream commit 95f723cf141b95e3b3a5b92cf2ea98a863fe7275 ] devm_kasprintf() returns NULL when memory allocation fails. Currently, avs_component_probe() does not check for this case, which results in a NULL pointer dereference. Fixes: 739c031110da ("ASoC: Intel: avs: Provide support for fallback topology") Reviewed-by: Cezary Rojewski <cezary.rojewski(a)intel.com> Reviewed-by: Ethan Carter Edwards <ethan(a)ethancedwards.com> Signed-off-by: Henry Martin <bsdhenrymartin(a)gmail.com> Link: https://patch.msgid.link/20250402141411.44972-1-bsdhenrymartin@gmail.com Signed-off-by: Mark Brown <broonie(a)kernel.org> Signed-off-by: Sasha Levin <sashal(a)kernel.org> Signed-off-by: Ze Zuo <zuoze1(a)huawei.com> --- sound/soc/intel/avs/pcm.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/sound/soc/intel/avs/pcm.c b/sound/soc/intel/avs/pcm.c index bb1e77ac78e0..781019685b94 100644 --- a/sound/soc/intel/avs/pcm.c +++ b/sound/soc/intel/avs/pcm.c @@ -808,7 +808,8 @@ static int avs_component_probe(struct snd_soc_component *component) else mach->tplg_filename = devm_kasprintf(adev->dev, GFP_KERNEL, "hda-generic-tplg.bin"); - + if (!mach->tplg_filename) + return -ENOMEM; filename = kasprintf(GFP_KERNEL, "%s/%s", component->driver->topology_name_prefix, mach->tplg_filename); if (!filename) -- 2.25.1

2 1

[PATCH OLK-6.6 0/2] CVE-2025-22090
by Ze Zuo 05 Nov '25

05 Nov '25

CVE-2025-22090 David Hildenbrand (2): x86/mm/pat: Fix VM_PAT handling when fork() fails in copy_page_range() mm: (un)track_pfn_copy() fix + doc improvements arch/x86/mm/pat/memtype.c | 52 +++++++++++++++++++++------------------ include/linux/pgtable.h | 31 ++++++++++++++++++----- kernel/fork.c | 4 +++ mm/memory.c | 11 +++------ 4 files changed, 61 insertions(+), 37 deletions(-) -- 2.25.1

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[PATCH OLK-6.6] hwpoison, memory_hotplug: lock folio before unmap hwpoisoned folio
by Ze Zuo 05 Nov '25

05 Nov '25

From: Ma Wupeng <mawupeng1(a)huawei.com> mainline inclusion from mainline-v6.14-rc6 commit af288a426c3e3552b62595c6138ec6371a17dbba category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/IBY42N CVE: CVE-2025-21931 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?… -------------------------------- Commit b15c87263a69 ("hwpoison, memory_hotplug: allow hwpoisoned pages to be offlined) add page poison checks in do_migrate_range in order to make offline hwpoisoned page possible by introducing isolate_lru_page and try_to_unmap for hwpoisoned page. However folio lock must be held before calling try_to_unmap. Add it to fix this problem. Warning will be produced if folio is not locked during unmap: ------------[ cut here ]------------ kernel BUG at ./include/linux/swapops.h:400! Internal error: Oops - BUG: 00000000f2000800 [#1] PREEMPT SMP Modules linked in: CPU: 4 UID: 0 PID: 411 Comm: bash Tainted: G W 6.13.0-rc1-00016-g3c434c7ee82a-dirty #41 Tainted: [W]=WARN Hardware name: QEMU QEMU Virtual Machine, BIOS 0.0.0 02/06/2015 pstate: 40400005 (nZcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : try_to_unmap_one+0xb08/0xd3c lr : try_to_unmap_one+0x3dc/0xd3c Call trace: try_to_unmap_one+0xb08/0xd3c (P) try_to_unmap_one+0x3dc/0xd3c (L) rmap_walk_anon+0xdc/0x1f8 rmap_walk+0x3c/0x58 try_to_unmap+0x88/0x90 unmap_poisoned_folio+0x30/0xa8 do_migrate_range+0x4a0/0x568 offline_pages+0x5a4/0x670 memory_block_action+0x17c/0x374 memory_subsys_offline+0x3c/0x78 device_offline+0xa4/0xd0 state_store+0x8c/0xf0 dev_attr_store+0x18/0x2c sysfs_kf_write+0x44/0x54 kernfs_fop_write_iter+0x118/0x1a8 vfs_write+0x3a8/0x4bc ksys_write+0x6c/0xf8 __arm64_sys_write+0x1c/0x28 invoke_syscall+0x44/0x100 el0_svc_common.constprop.0+0x40/0xe0 do_el0_svc+0x1c/0x28 el0_svc+0x30/0xd0 el0t_64_sync_handler+0xc8/0xcc el0t_64_sync+0x198/0x19c Code: f9407be0 b5fff320 d4210000 17ffff97 (d4210000) ---[ end trace 0000000000000000 ]--- Link: https://lkml.kernel.org/r/20250217014329.3610326-4-mawupeng1@huawei.com Fixes: b15c87263a69 ("hwpoison, memory_hotplug: allow hwpoisoned pages to be offlined") Signed-off-by: Ma Wupeng <mawupeng1(a)huawei.com> Acked-by: David Hildenbrand <david(a)redhat.com> Acked-by: Miaohe Lin <linmiaohe(a)huawei.com> Cc: Michal Hocko <mhocko(a)suse.com> Cc: Naoya Horiguchi <nao.horiguchi(a)gmail.com> Cc: Oscar Salvador <osalvador(a)suse.de> Cc: <stable(a)vger.kernel.org> Signed-off-by: Andrew Morton <akpm(a)linux-foundation.org> Conflicts: mm/memory_hotplug.c [Wupeng Ma: Fix this based on ideas since too much conflicts] Signed-off-by: Wupeng Ma <mawupeng1(a)huawei.com> Signed-off-by: Ze Zuo <zuoze1(a)huawei.com> --- mm/memory_hotplug.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/mm/memory_hotplug.c b/mm/memory_hotplug.c index 074ec691e892..cd67b161189b 100644 --- a/mm/memory_hotplug.c +++ b/mm/memory_hotplug.c @@ -1762,8 +1762,12 @@ void do_migrate_range(unsigned long start_pfn, unsigned long end_pfn) if (PageHWPoison(page)) { if (WARN_ON(folio_test_lru(folio))) folio_isolate_lru(folio); - if (folio_mapped(folio)) + if (folio_mapped(folio)) { + folio_lock(folio); try_to_unmap(folio, TTU_IGNORE_MLOCK | TTU_HWPOISON); + folio_unlock(folio); + } + continue; } -- 2.25.1

2 1

[PATCH OLK-6.6 0/2] CVE-2025-21696
by Ze Zuo 05 Nov '25

05 Nov '25

CVE-2025-21696 Lokesh Gidra (1): userfaultfd: move userfaultfd_ctx struct to header file Ryan Roberts (1): mm: clear uffd-wp PTE/PMD state on mremap() fs/userfaultfd.c | 39 --------------------------- include/linux/userfaultfd_k.h | 51 +++++++++++++++++++++++++++++++++++ mm/huge_memory.c | 12 +++++++++ mm/hugetlb.c | 14 +++++++++- mm/mremap.c | 32 +++++++++++++++++++++- 5 files changed, 107 insertions(+), 41 deletions(-) -- 2.25.1

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[PATCH OLK-6.6 00/18] Backport some memory policy feature and bugfix from mainline
by Ze Zuo 05 Nov '25

05 Nov '25

Implementation of weight-based L/R memory interleaving allocation Gregory Price (3): mm/mempolicy: refactor a read-once mechanism into a function for re-use mm/mempolicy: introduce MPOL_WEIGHTED_INTERLEAVE for weighted interleaving mm/mempolicy: protect task interleave functions with tsk->mems_allowed_seq Honggyu Kim (1): mm/mempolicy: count MPOL_WEIGHTED_INTERLEAVE to "interleave_hit" Hugh Dickins (10): mempolicy: fix migrate_pages(2) syscall return nr_failed mempolicy trivia: delete those ancient pr_debug()s mempolicy trivia: slightly more consistent naming mempolicy trivia: use pgoff_t in shared mempolicy tree mempolicy: mpol_shared_policy_init() without pseudo-vma mempolicy: remove confusing MPOL_MF_LAZY dead code kernfs: drop shared NUMA mempolicy hooks mempolicy: alloc_pages_mpol() for NUMA policy without vma mempolicy: mmap_lock is not needed while migrating folios mempolicy: migration attempt to match interleave nodes Lukas Bulwahn (1): mempolicy: clean up minor dead code in queue_pages_test_walk() Rakie Kim (2): mm/mempolicy: implement the sysfs-based weighted_interleave interface mm/mempolicy: fix memory leaks in weighted interleave sysfs Ze Zuo (1): Revert "mm/mempolicy.c: fix the out-of-bounds access issue in mpol_parse_str" .../ABI/testing/sysfs-kernel-mm-mempolicy | 4 + ...fs-kernel-mm-mempolicy-weighted-interleave | 25 + .../admin-guide/mm/numa_memory_policy.rst | 9 + fs/kernfs/file.c | 49 - fs/proc/task_mmu.c | 5 +- include/linux/gfp.h | 10 +- include/linux/hugetlb.h | 9 - include/linux/mempolicy.h | 51 +- include/uapi/linux/mempolicy.h | 2 +- ipc/shm.c | 19 +- mm/hugetlb.c | 38 +- mm/mempolicy.c | 1505 ++++++++++------- mm/shmem.c | 77 +- mm/swap.h | 7 +- mm/swap_state.c | 81 +- mm/zswap.c | 7 +- 16 files changed, 1143 insertions(+), 755 deletions(-) create mode 100644 Documentation/ABI/testing/sysfs-kernel-mm-mempolicy create mode 100644 Documentation/ABI/testing/sysfs-kernel-mm-mempolicy-weighted-interleave -- 2.25.1

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[openeuler:OLK-6.6 3098/3098] kernel/bpf-rvi/common_kfuncs.c:233:27: warning: no previous prototype for 'bpf_mem_failure'
by kernel test robot 05 Nov '25

05 Nov '25

tree: https://gitee.com/openeuler/kernel.git OLK-6.6 head: 534b306a9ab27f36c465a7c90a32a1b4ff3a641c commit: 09893ff02def3af3147aff056dca7bee71c432f0 [3098/3098] bpf-rvi: Add bpf_mem_failure kfunc config: x86_64-randconfig-001-20251104 (https://download.01.org/0day-ci/archive/20251105/202511051752.bxOVRS5t-lkp@…) compiler: gcc-14 (Debian 14.2.0-19) 14.2.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20251105/202511051752.bxOVRS5t-lkp@…) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot <lkp(a)intel.com> | Closes: https://lore.kernel.org/oe-kbuild-all/202511051752.bxOVRS5t-lkp@intel.com/ All warnings (new ones prefixed by >>): kernel/bpf-rvi/common_kfuncs.c:27:32: warning: no previous prototype for 'bpf_mem_cgroup_from_task' [-Wmissing-prototypes] 27 | __bpf_kfunc struct mem_cgroup *bpf_mem_cgroup_from_task(struct task_struct *p) | ^~~~~~~~~~~~~~~~~~~~~~~~ kernel/bpf-rvi/common_kfuncs.c:36:35: warning: no previous prototype for 'bpf_task_active_pid_ns' [-Wmissing-prototypes] 36 | __bpf_kfunc struct pid_namespace *bpf_task_active_pid_ns(struct task_struct *task) | ^~~~~~~~~~~~~~~~~~~~~~ kernel/bpf-rvi/common_kfuncs.c:41:17: warning: no previous prototype for 'bpf_pidns_nr_tasks' [-Wmissing-prototypes] 41 | __bpf_kfunc u64 bpf_pidns_nr_tasks(struct pid_namespace *ns) | ^~~~~~~~~~~~~~~~~~ kernel/bpf-rvi/common_kfuncs.c:55:17: warning: no previous prototype for 'bpf_pidns_last_pid' [-Wmissing-prototypes] 55 | __bpf_kfunc u32 bpf_pidns_last_pid(struct pid_namespace *ns) | ^~~~~~~~~~~~~~~~~~ kernel/bpf-rvi/common_kfuncs.c:84:18: warning: no previous prototype for 'bpf_si_memswinfo' [-Wmissing-prototypes] 84 | __bpf_kfunc void bpf_si_memswinfo(struct bpf_sysinfo *bsi) | ^~~~~~~~~~~~~~~~ kernel/bpf-rvi/common_kfuncs.c:94:27: warning: no previous prototype for 'bpf_page_counter_read' [-Wmissing-prototypes] 94 | __bpf_kfunc unsigned long bpf_page_counter_read(struct page_counter *counter) | ^~~~~~~~~~~~~~~~~~~~~ kernel/bpf-rvi/common_kfuncs.c:104:18: warning: no previous prototype for 'bpf_seq_file_append' [-Wmissing-prototypes] 104 | __bpf_kfunc void bpf_seq_file_append(struct seq_file *dst, struct seq_file *src) | ^~~~~~~~~~~~~~~~~~~ kernel/bpf-rvi/common_kfuncs.c:118:18: warning: no previous prototype for 'bpf_get_boottime_timens' [-Wmissing-prototypes] 118 | __bpf_kfunc void bpf_get_boottime_timens(struct task_struct *tsk, struct timespec64 *boottime) | ^~~~~~~~~~~~~~~~~~~~~~~ kernel/bpf-rvi/common_kfuncs.c:124:27: warning: no previous prototype for 'bpf_get_total_forks' [-Wmissing-prototypes] 124 | __bpf_kfunc unsigned long bpf_get_total_forks(void) | ^~~~~~~~~~~~~~~~~~~ kernel/bpf-rvi/common_kfuncs.c:129:26: warning: no previous prototype for 'bpf_nr_running' [-Wmissing-prototypes] 129 | __bpf_kfunc unsigned int bpf_nr_running(void) | ^~~~~~~~~~~~~~ kernel/bpf-rvi/common_kfuncs.c:134:32: warning: no previous prototype for 'bpf_nr_context_switches' [-Wmissing-prototypes] 134 | __bpf_kfunc unsigned long long bpf_nr_context_switches(void) | ^~~~~~~~~~~~~~~~~~~~~~~ kernel/bpf-rvi/common_kfuncs.c:139:26: warning: no previous prototype for 'bpf_nr_iowait' [-Wmissing-prototypes] 139 | __bpf_kfunc unsigned int bpf_nr_iowait(void) | ^~~~~~~~~~~~~ kernel/bpf-rvi/common_kfuncs.c:145:26: warning: no previous prototype for 'bpf_kstat_softirqs_cpu' [-Wmissing-prototypes] 145 | __bpf_kfunc unsigned int bpf_kstat_softirqs_cpu(unsigned int irq, int cpu) | ^~~~~~~~~~~~~~~~~~~~~~ kernel/bpf-rvi/common_kfuncs.c:150:27: warning: no previous prototype for 'bpf_kstat_cpu_irqs_sum' [-Wmissing-prototypes] 150 | __bpf_kfunc unsigned long bpf_kstat_cpu_irqs_sum(unsigned int cpu) | ^~~~~~~~~~~~~~~~~~~~~~ kernel/bpf-rvi/common_kfuncs.c:155:18: warning: no previous prototype for 'bpf_kcpustat_cpu_fetch' [-Wmissing-prototypes] 155 | __bpf_kfunc void bpf_kcpustat_cpu_fetch(struct kernel_cpustat *dst, int cpu) | ^~~~~~~~~~~~~~~~~~~~~~ kernel/bpf-rvi/common_kfuncs.c:164:27: warning: no previous prototype for 'bpf_mem_file_hugepage' [-Wmissing-prototypes] 164 | __bpf_kfunc unsigned long bpf_mem_file_hugepage(void) | ^~~~~~~~~~~~~~~~~~~~~ kernel/bpf-rvi/common_kfuncs.c:169:27: warning: no previous prototype for 'bpf_mem_file_pmdmapped' [-Wmissing-prototypes] 169 | __bpf_kfunc unsigned long bpf_mem_file_pmdmapped(void) | ^~~~~~~~~~~~~~~~~~~~~~ kernel/bpf-rvi/common_kfuncs.c:174:27: warning: no previous prototype for 'bpf_mem_kreclaimable' [-Wmissing-prototypes] 174 | __bpf_kfunc unsigned long bpf_mem_kreclaimable(void) | ^~~~~~~~~~~~~~~~~~~~ kernel/bpf-rvi/common_kfuncs.c:180:27: warning: no previous prototype for 'bpf_mem_totalcma' [-Wmissing-prototypes] 180 | __bpf_kfunc unsigned long bpf_mem_totalcma(void) | ^~~~~~~~~~~~~~~~ kernel/bpf-rvi/common_kfuncs.c:185:27: warning: no previous prototype for 'bpf_mem_freecma' [-Wmissing-prototypes] 185 | __bpf_kfunc unsigned long bpf_mem_freecma(void) | ^~~~~~~~~~~~~~~ kernel/bpf-rvi/common_kfuncs.c:200:17: warning: no previous prototype for 'bpf_hugetlb_report_meminfo' [-Wmissing-prototypes] 200 | __bpf_kfunc int bpf_hugetlb_report_meminfo(struct bpf_mem_hugepage *hugepage_info) | ^~~~~~~~~~~~~~~~~~~~~~~~~~ >> kernel/bpf-rvi/common_kfuncs.c:233:27: warning: no previous prototype for 'bpf_mem_failure' [-Wmissing-prototypes] 233 | __bpf_kfunc unsigned long bpf_mem_failure(void) | ^~~~~~~~~~~~~~~ vim +/bpf_mem_failure +233 kernel/bpf-rvi/common_kfuncs.c 179 > 180 __bpf_kfunc unsigned long bpf_mem_totalcma(void) 181 { 182 return totalcma_pages; 183 } 184 185 __bpf_kfunc unsigned long bpf_mem_freecma(void) 186 { 187 return global_zone_page_state(NR_FREE_CMA_PAGES); 188 } 189 190 struct bpf_mem_hugepage { 191 unsigned long total; 192 unsigned long free; 193 unsigned long rsvd; 194 unsigned long surp; 195 unsigned long size; 196 unsigned long hugetlb; 197 }; 198 199 #ifdef CONFIG_HUGETLB_PAGE 200 __bpf_kfunc int bpf_hugetlb_report_meminfo(struct bpf_mem_hugepage *hugepage_info) 201 { 202 struct hstate *h; 203 unsigned long total = 0; 204 205 if (!hugepages_supported()) 206 return -1; 207 208 for_each_hstate(h) { 209 unsigned long count = h->nr_huge_pages; 210 211 total += huge_page_size(h) * count; 212 213 if (h == &default_hstate) { 214 hugepage_info->total = count; 215 hugepage_info->free = h->free_huge_pages; 216 hugepage_info->rsvd = h->resv_huge_pages; 217 hugepage_info->surp = h->surplus_huge_pages; 218 hugepage_info->size = huge_page_size(h) / SZ_1K; 219 } 220 } 221 222 hugepage_info->hugetlb = total / SZ_1K; 223 return 0; 224 } 225 #else 226 __bpf_kfunc int bpf_hugetlb_report_meminfo(struct bpf_mem_hugepage *hugepage_info) 227 { 228 return -1; 229 } 230 #endif 231 232 #ifdef CONFIG_MEMORY_FAILURE > 233 __bpf_kfunc unsigned long bpf_mem_failure(void) 234 { 235 return atomic_long_read(&num_poisoned_pages) << (PAGE_SHIFT - 10); 236 } 237 #else 238 __bpf_kfunc unsigned long bpf_mem_failure(void) 239 { 240 return 0; 241 } 242 #endif 243 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki

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