Repository files (latest commit first)

Filename	Latest commit message	Latest commit date
Breno Leitao c7b6ea0ede mm/kmemleak: avoid deadlock by moving pr_warn() outside kmemleak_lock ... [ Upstream commit 47b0f6d8f0d2be4d311a49e13d2fd5f152f492b2 ] When netpoll is enabled, calling pr_warn_once() while holding kmemleak_lock in mem_pool_alloc() can cause a deadlock due to lock inversion with the netconsole subsystem. This occurs because pr_warn_once() may trigger netpoll, which eventually leads to __alloc_skb() and back into kmemleak code, attempting to reacquire kmemleak_lock. This is the path for the deadlock. mem_pool_alloc() -> raw_spin_lock_irqsave(&kmemleak_lock, flags); -> pr_warn_once() -> netconsole subsystem -> netpoll -> __alloc_skb -> __create_object -> raw_spin_lock_irqsave(&kmemleak_lock, flags); Fix this by setting a flag and issuing the pr_warn_once() after kmemleak_lock is released. Link: https://lkml.kernel.org/r/20250731-kmemleak_lock-v1-1-728fd470198f@debian.org Fixes: c566586818 ("mm: kmemleak: use the memory pool for early allocations") Signed-off-by: Breno Leitao <leitao@debian.org> Reported-by: Jakub Kicinski <kuba@kernel.org> Acked-by: Catalin Marinas <catalin.marinas@arm.com> Cc: <stable@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Sasha Levin <sashal@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2025-08-28 16:21:34 +02:00
..
kasan	panic: Consolidate open-coded panic_on_warn checks	2023-02-06 07:52:50 +01:00
backing-dev.c	mm: bdi: initialize bdi_min_ratio when bdi is unregistered	2021-12-14 14:49:00 +01:00
balloon_compaction.c
cleancache.c
cma.c	mm/cma: use nth_page() in place of direct struct page manipulation	2023-11-28 16:50:19 +00:00
cma.h
cma_debug.c
compaction.c	mm, vmscan: prevent infinite loop for costly GFP_NOIO | __GFP_RETRY_MAYFAIL allocations	2024-04-13 12:51:34 +02:00
debug.c
debug_page_ref.c
dmapool.c
early_ioremap.c
fadvise.c
failslab.c
filemap.c	mm: allow a controlled amount of unfairness in the page lock	2023-08-30 16:27:26 +02:00
frame_vector.c	v4l2: don't fall back to follow_pfn() if pin_user_pages_fast() fails	2022-12-08 11:23:06 +01:00
frontswap.c	treewide: Remove uninitialized_var() usage	2023-06-09 10:29:01 +02:00
gup.c	mm/hugetlb: fix races when looking up a CONT-PTE/PMD size hugetlb page	2022-12-19 12:24:15 +01:00
gup_benchmark.c
highmem.c
hmm.c	mm/hmm: move pmd_to_hmm_pfn_flags() to the respective #ifdeffery	2025-08-28 16:21:34 +02:00
huge_memory.c	mm/huge_memory: fix dereferencing invalid pmd migration entry	2025-06-27 11:02:58 +01:00
hugetlb.c	mm/hugetlb: fix races when looking up a CONT-PTE/PMD size hugetlb page	2022-12-19 12:24:15 +01:00
hugetlb_cgroup.c
hwpoison-inject.c
init-mm.c
internal.h
interval_tree.c
Kconfig
Kconfig.debug
khugepaged.c	mm/khugepaged: fix collapse_pte_mapped_thp() to allow anon_vma	2023-01-24 07:18:01 +01:00
kmemleak-test.c
kmemleak.c	mm/kmemleak: avoid deadlock by moving pr_warn() outside kmemleak_lock	2025-08-28 16:21:34 +02:00
ksm.c	treewide: Remove uninitialized_var() usage	2023-06-09 10:29:01 +02:00
list_lru.c
maccess.c
madvise.c	mm: fix madivse_pageout mishandling on non-LRU page	2022-10-05 10:37:43 +02:00
Makefile
memblock.c	Revert "mm: Always release pages to the buddy allocator in memblock_free_late()."	2023-02-22 12:50:39 +01:00
memcontrol.c	memcg: always call cond_resched() after fn()	2025-06-04 14:32:35 +02:00
memfd.c	memfd: fix F_SEAL_WRITE after shmem huge page allocated	2022-03-08 19:07:49 +01:00
memory-failure.c	mm/memory-failure: fix an incorrect use of tail pages	2024-04-13 12:51:31 +02:00
memory.c	mm: avoid leaving partial pfn mappings around in error case	2024-11-17 14:58:53 +01:00
memory_hotplug.c
mempolicy.c	treewide: Remove uninitialized_var() usage	2023-06-09 10:29:01 +02:00
mempool.c
memremap.c
memtest.c	memtest: use {READ,WRITE}_ONCE in memory scanning	2024-04-13 12:51:27 +02:00
migrate.c	mm/migrate: set swap entry values of THP tail pages properly.	2024-04-13 12:51:31 +02:00
mincore.c
mlock.c
mm_init.c
mmap.c	mm: Fix TLB flush for not-first PFNMAP mappings in unmap_region()	2022-09-20 12:28:00 +02:00
mmu_context.c
mmu_gather.c	mm/khugepaged: fix GUP-fast interaction by sending IPI	2022-12-14 11:30:42 +01:00
mmu_notifier.c
mmzone.c	arm: remove CONFIG_ARCH_HAS_HOLES_MEMORYMODEL	2022-05-15 19:54:46 +02:00
mprotect.c
mremap.c	mm/mremap: hold the rmap lock in write mode when moving page table entries.	2022-08-25 11:17:20 +02:00
msync.c
nommu.c
oom_kill.c	memcg: fix soft lockup in the OOM process	2025-03-13 12:43:21 +01:00
page-writeback.c	mm: fix ratelimit_pages update error in dirty_ratio_handler()	2025-06-27 11:02:52 +01:00
page_alloc.c	mm/page_alloc.c: avoid infinite retries caused by cpuset race	2025-06-04 14:32:36 +02:00
page_counter.c
page_ext.c
page_idle.c
page_io.c	mm: fix unexpected zeroed page mapping with zram swap	2022-05-12 12:23:48 +02:00
page_isolation.c
page_owner.c
page_poison.c
page_vma_mapped.c
pagewalk.c	mm: pagewalk: Fix race between unmap and page walker	2022-10-15 07:54:36 +02:00
percpu-internal.h
percpu-km.c
percpu-stats.c
percpu-vm.c
percpu.c	treewide: Remove uninitialized_var() usage	2023-06-09 10:29:01 +02:00
pgtable-generic.c
process_vm_access.c
readahead.c	vfs: fix readahead(2) on block devices	2023-11-20 10:30:08 +01:00
rmap.c	mm/rmap: Fix anon_vma->degree ambiguity leading to double-reuse	2022-09-05 10:27:46 +02:00
rodata_test.c
shmem.c	mm: revert "mm: shmem: fix data-race in shmem_getattr()"	2024-12-14 19:44:19 +01:00
shuffle.c
shuffle.h
slab.c
slab.h	mm: kmemleak: slob: respect SLAB_NOLEAKTRACE flag	2021-11-26 10:47:21 +01:00
slab_common.c	mm: krealloc: Fix MTE false alarm in __do_krealloc	2024-11-08 16:20:54 +01:00
slob.c
slub.c	treewide: Remove uninitialized_var() usage	2023-06-09 10:29:01 +02:00
sparse-vmemmap.c
sparse.c
swap.c	treewide: Remove uninitialized_var() usage	2023-06-09 10:29:01 +02:00
swap_cgroup.c
swap_slots.c
swap_state.c
swapfile.c	mm/swapfile: skip HugeTLB pages for unuse_vma	2024-11-08 16:20:47 +01:00
truncate.c
usercopy.c	mm/usercopy: return 1 from hardened_usercopy __setup() handler	2022-04-15 14:18:30 +02:00
userfaultfd.c	userfaultfd: fix mmap_changing checking in mfill_atomic_hugetlb	2024-03-01 13:13:33 +01:00
util.c	mm: only enforce minimum stack gap size if it's sensible	2024-11-08 16:20:35 +01:00
vmacache.c
vmalloc.c
vmpressure.c
vmscan.c	mm: add missing release barrier on PGDAT_RECLAIM_LOCKED unlock	2025-05-02 07:39:16 +02:00
vmstat.c	arm: remove CONFIG_ARCH_HAS_HOLES_MEMORYMODEL	2022-05-15 19:54:46 +02:00
workingset.c
z3fold.c
zbud.c
zpool.c
zsmalloc.c	mm/zsmalloc: do not pass __GFP_MOVABLE if CONFIG_COMPACTION=n	2025-08-28 16:21:33 +02:00
zswap.c