Hariom Panthi 21e516b913 mm: vmalloc: dump page owner info if page is already mapped ... In vmap_pte_range, BUG_ON is called when page is already mapped, It doesn't give enough information to debug further. Dumping page owner information alongwith BUG_ON will be more useful in case of multiple page mapping. Example: [ 14.552875] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x10b923 [ 14.553440] flags: 0xbffff0000000000(node=0|zone=2|lastcpupid=0x3ffff) [ 14.554001] page_type: 0xffffffff() [ 14.554783] raw: 0bffff0000000000 0000000000000000 dead000000000122 0000000000000000 [ 14.555230] raw: 0000000000000000 0000000000000000 00000001ffffffff 0000000000000000 [ 14.555768] page dumped because: remapping already mapped page [ 14.556172] page_owner tracks the page as allocated [ 14.556482] page last allocated via order 0, migratetype Unmovable, gfp_mask 0xcc0(GFP_KERNEL), pid 80, tgid 80 (insmod), ts 14552004992, free_ts 0 [ 14.557286] prep_new_page+0xa8/0x10c [ 14.558052] get_page_from_freelist+0x7f8/0x1248 [ 14.558298] __alloc_pages+0x164/0x2b4 [ 14.558514] alloc_pages_mpol+0x88/0x230 [ 14.558904] alloc_pages+0x4c/0x7c [ 14.559157] load_module+0x74/0x1af4 [ 14.559361] __do_sys_init_module+0x190/0x1fc [ 14.559615] __arm64_sys_init_module+0x1c/0x28 [ 14.559883] invoke_syscall+0x44/0x108 [ 14.560109] el0_svc_common.constprop.0+0x40/0xe0 [ 14.560371] do_el0_svc_compat+0x1c/0x34 [ 14.560600] el0_svc_compat+0x2c/0x80 [ 14.560820] el0t_32_sync_handler+0x90/0x140 [ 14.561040] el0t_32_sync+0x194/0x198 [ 14.561329] page_owner free stack trace missing [ 14.562049] ------------[ cut here ]------------ [ 14.562314] kernel BUG at mm/vmalloc.c:113! Link: https://lkml.kernel.org/r/20240424111838.3782931-2-hariom1.p@samsung.com Signed-off-by: Hariom Panthi <hariom1.p@samsung.com> Cc: Christoph Hellwig <hch@infradead.org> Cc: Lorenzo Stoakes <lstoakes@gmail.com> Cc: Maninder Singh <maninder1.s@samsung.com> Cc: Oscar Salvador <osalvador@suse.de> Cc: Rohit Thapliyal <r.thapliyal@samsung.com> Cc: Uladzislau Rezki (Sony) <urezki@gmail.com> Cc: Vlastimil Babka <vbabka@suse.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>		2024-05-05 17:53:51 -07:00
..
damon	mm: madvise: pageout: ignore references rather than clearing young	2024-03-04 17:01:18 -08:00
kasan	fix missing vmalloc.h includes	2024-04-25 20:55:49 -07:00
kfence	mm: introduce slabobj_ext to support slab object extensions	2024-04-25 20:55:51 -07:00
kmsan	mm: kmsan: remove runtime checks from kmsan_unpoison_memory()	2024-02-22 10:24:41 -08:00
backing-dev.c	mm: backing-dev: use group allocation/free of per-cpu counters API	2024-04-25 20:56:12 -07:00
balloon_compaction.c
bootmem_info.c	bootmem: use kmemleak_free_part_phys in put_page_bootmem	2023-10-25 16:47:13 -07:00
cma_debug.c
cma_sysfs.c	mm/cma: add sysfs file 'release_pages_success'	2024-02-22 10:24:57 -08:00
cma.c	mm/cma: drop incorrect alignment check in cma_init_reserved_mem	2024-04-25 20:56:42 -07:00
cma.h	mm/cma: add sysfs file 'release_pages_success'	2024-02-22 10:24:57 -08:00
compaction.c	memory: remove the now superfluous sentinel element from ctl_table array	2024-04-25 20:56:32 -07:00
debug_page_alloc.c	mm: page_alloc: consolidate free page accounting	2024-04-25 20:56:04 -07:00
debug_page_ref.c
debug_vm_pgtable.c	fix missing vmalloc.h includes	2024-04-25 20:55:49 -07:00
debug.c	mm/debug: print only page mapcount (excluding folio entire mapcount) in __dump_folio()	2024-05-05 17:53:31 -07:00
dmapool_test.c
dmapool.c	mm/mempool/dmapool: remove CONFIG_DEBUG_SLAB ifdefs	2023-12-05 11:17:58 +01:00
early_ioremap.c
fadvise.c
fail_page_alloc.c
failslab.c
filemap.c	mm: filemap: batch mm counter updating in filemap_map_pages()	2024-05-05 17:53:36 -07:00
folio-compat.c	mm: remove __set_page_dirty_nobuffers()	2024-04-25 20:56:25 -07:00
gup_test.c
gup_test.h
gup.c	gup: use folios for gup_devmap	2024-05-05 17:53:49 -07:00
highmem.c	x86/kexec: use pr_err() instead of kexec_dprintk() when an error occurs	2023-12-29 12:22:28 -08:00
hmm.c	mm/treewide: replace pXd_huge() with pXd_leaf()	2024-04-25 20:55:46 -07:00
huge_memory.c	mm/huge_memory: improve split_huge_page_to_list_to_order() return value documentation	2024-05-05 17:53:42 -07:00
hugetlb_cgroup.c	mm/hugetlb: assert hugetlb_lock in __hugetlb_cgroup_commit_charge	2024-05-05 17:53:41 -07:00
hugetlb_vmemmap.c	memory: remove the now superfluous sentinel element from ctl_table array	2024-04-25 20:56:32 -07:00
hugetlb_vmemmap.h	mm: hugetlb_vmemmap: fix reference to nonexistent file	2023-10-25 16:47:14 -07:00
hugetlb.c	mm: convert hugetlb_page_mapping_lock_write to folio	2024-05-05 17:53:46 -07:00
hwpoison-inject.c	mm/memory-failure: convert shake_page() to shake_folio()	2024-05-05 17:53:45 -07:00
init-mm.c	mm: Deprecate pasid field	2023-12-12 10:11:32 +01:00
internal.h	mm/memory-failure: convert shake_page() to shake_folio()	2024-05-05 17:53:45 -07:00
interval_tree.c
io-mapping.c
ioremap.c	mm: ioremap: remove unneeded ioremap_allowed and iounmap_allowed	2023-08-18 10:12:36 -07:00
Kconfig	mm/treewide: rename CONFIG_HAVE_FAST_GUP to CONFIG_HAVE_GUP_FAST	2024-04-25 20:56:41 -07:00
Kconfig.debug	mm/slub: unify all sl[au]b parameters with "slab_$param"	2024-01-22 10:31:08 +01:00
khugepaged.c	mm/khugepaged: replace page_mapcount() check by folio_likely_mapped_shared()	2024-05-05 17:53:50 -07:00
kmemleak.c	mm/kmemleak: compact kmemleak_object further	2024-04-25 20:56:05 -07:00
ksm.c	mm/memory-failure: pass the folio to collect_procs_ksm()	2024-05-05 17:53:47 -07:00
list_lru.c	mm/zswap: stop lru list shrinking when encounter warm region	2024-02-22 10:24:54 -08:00
maccess.c
madvise.c	mm/madvise: optimize lazyfreeing with mTHP in madvise_free	2024-05-05 17:53:43 -07:00
Makefile	mm/kmemleak: disable KASAN instrumentation in kmemleak	2024-04-25 20:56:05 -07:00
mapping_dirty_helpers.c	mm: fix clean_record_shared_mapping_range kernel-doc	2023-08-24 16:20:30 -07:00
memblock.c	cxl fixes for 6.8-rc6	2024-02-24 15:53:40 -08:00
memcontrol.c	memcg: fix data-race KCSAN bug in rstats	2024-05-05 17:53:50 -07:00
memfd.c	mm/memfd: refactor memfd_tag_pins() and memfd_wait_for_pins()	2024-03-04 17:01:21 -08:00
memory_hotplug.c	mm/hugetlb: rename dissolve_free_huge_pages() to dissolve_free_hugetlb_folios()	2024-05-05 17:53:35 -07:00
memory-failure.c	memory-failure: remove calls to page_mapping()	2024-05-05 17:53:48 -07:00
memory-tiers.c	memory tier: create CPUless memory tiers after obtaining HMAT info	2024-05-05 17:53:26 -07:00
memory.c	mm: memory: check userfaultfd_wp() in vmf_orig_pte_uffd_wp()	2024-05-05 17:53:43 -07:00
mempolicy.c	mm: add pmd_folio()	2024-04-25 20:56:19 -07:00
mempool.c	mempool: hook up to memory allocation profiling	2024-04-25 20:55:56 -07:00
memremap.c	mm: convert put_devmap_managed_page_refs() to put_devmap_managed_folio_refs()	2024-05-05 17:53:49 -07:00
memtest.c	memtest: use {READ,WRITE}_ONCE in memory scanning	2024-03-13 12:12:21 -07:00
migrate_device.c	migrate: expand the use of folio in __migrate_device_pages()	2024-05-05 17:53:48 -07:00
migrate.c	mm: convert hugetlb_page_mapping_lock_write to folio	2024-05-05 17:53:46 -07:00
mincore.c	mm: enable page walking API to lock vmas during the walk	2023-08-21 13:07:20 -07:00
mlock.c	mm: add pmd_folio()	2024-04-25 20:56:19 -07:00
mm_init.c	mm: init_mlocked_on_free_v3	2024-04-25 20:56:29 -07:00
mm_slot.h
mmap_lock.c
mmap.c	mm/mmap: make accountable_mapping return bool	2024-05-05 17:53:26 -07:00
mmu_gather.c	mm/mmu_gather: improve cond_resched() handling with large folios and expensive page freeing	2024-02-22 15:27:17 -08:00
mmu_notifier.c	mmu_notifiers: rename invalidate_range notifier	2023-08-18 10:12:41 -07:00
mmzone.c	zswap: shrink zswap pool based on memory pressure	2023-12-12 10:57:02 -08:00
mprotect.c	mm: support multi-size THP numa balancing	2024-04-25 20:56:30 -07:00
mremap.c	mm: remove "prot" parameter from move_pte()	2024-04-25 20:56:24 -07:00
msync.c
nommu.c	mm: remove follow_pfn	2024-04-25 20:56:12 -07:00
oom_kill.c	memory: remove the now superfluous sentinel element from ctl_table array	2024-04-25 20:56:32 -07:00
page_alloc.c	mm: page_alloc: allowing mTHP compaction to capture the freed page directly	2024-05-05 17:53:37 -07:00
page_counter.c
page_ext.c	mm: make page_ext_get() take a const argument	2024-04-25 20:56:14 -07:00
page_idle.c
page_io.c	mm: add per-order mTHP anon_swpout and anon_swpout_fallback counters	2024-05-05 17:53:35 -07:00
page_isolation.c	mm: page_isolation: prepare for hygienic freelists	2024-04-25 20:56:04 -07:00
page_owner.c	mm: introduce slabobj_ext to support slab object extensions	2024-04-25 20:55:51 -07:00
page_poison.c	mm/page_poison: replace kmap_atomic() with kmap_local_page()	2023-12-10 16:51:50 -08:00
page_reporting.c	mm, treewide: rename MAX_ORDER to MAX_PAGE_ORDER	2024-01-08 15:27:15 -08:00
page_reporting.h
page_table_check.c	mm/page_table_check: support userfault wr-protect entries	2024-05-05 17:53:41 -07:00
page_vma_mapped.c	mm: make page_mapped_in_vma conditional on CONFIG_MEMORY_FAILURE	2024-05-05 17:53:45 -07:00
page-writeback.c	doc: improve the description of __folio_mark_dirty	2024-05-05 17:53:39 -07:00
pagewalk.c	mm: pagewalk: assert write mmap lock only for walking the user page tables	2023-12-10 16:51:53 -08:00
percpu-internal.h	mm: percpu: add codetag reference into pcpuobj_ext	2024-04-25 20:55:56 -07:00
percpu-km.c
percpu-stats.c
percpu-vm.c	percpu: clean up all mappings when pcpu_map_pages() fails	2024-04-25 20:55:49 -07:00
percpu.c	mm: percpu: enable per-cpu allocation tagging	2024-04-25 20:55:56 -07:00
pgalloc-track.h
pgtable-generic.c	mm/pgtable: notes on pte_offset_map[_lock]()	2023-08-18 10:12:25 -07:00
process_vm_access.c	mm: fix process_vm_rw page counts	2023-12-10 16:51:39 -08:00
ptdump.c	mm: ptdump: add check_wx_pages debugfs attribute	2024-02-22 10:24:47 -08:00
readahead.c	mm/readahead: break read-ahead loop if filemap_add_folio return -ENOMEM	2024-04-25 20:56:07 -07:00
rmap.c	mm: track mapcount of large folios in single value	2024-05-05 17:53:28 -07:00
rodata_test.c
secretmem.c	mm/secretmem: use a folio in secretmem_fault()	2023-08-21 13:38:02 -07:00
shmem_quota.c	tmpfs: fix race on handling dquot rbtree	2024-03-26 11:07:23 -07:00
shmem.c	mm: switch mm->get_unmapped_area() to a flag	2024-04-25 20:56:25 -07:00
show_mem.c	lib: add memory allocations report in show_mem()	2024-04-25 20:55:57 -07:00
shrinker_debug.c	mm: shrinker: convert shrinker_rwsem to mutex	2023-10-04 10:32:26 -07:00
shrinker.c	mm: shrinker: use kvzalloc_node() from expand_one_shrinker_info()	2024-01-05 09:58:32 -08:00
shuffle.c
shuffle.h	mm, treewide: rename MAX_ORDER to MAX_PAGE_ORDER	2024-01-08 15:27:15 -08:00
slab_common.c	mm/slab: enable slab allocation tagging for kmalloc and friends	2024-04-25 20:55:55 -07:00
slab.h	memcg: simple cleanup of stats update functions	2024-05-05 17:53:44 -07:00
slub.c	mm, slab: move slab_memcg hooks to mm/memcontrol.c	2024-04-25 20:56:16 -07:00
sparse-vmemmap.c	mm/vmemmap: allow architectures to override how vmemmap optimization works	2023-08-18 10:12:53 -07:00
sparse.c	mm/sparse: guard the size of mem_section is power of 2	2024-05-05 17:53:40 -07:00
swap_cgroup.c
swap_slots.c	mm: swap: update get_swap_pages() to take folio order	2024-04-25 20:56:37 -07:00
swap_state.c	mm: remove struct page from get_shadow_from_swap_cache	2024-04-25 20:56:40 -07:00
swap.c	mm: add kernel-doc for folio_mark_accessed()	2024-05-05 17:53:50 -07:00
swap.h	mm/swap: fix race when skipping swapcache	2024-02-20 14:20:48 -08:00
swapfile.c	mm: swapfile: check usable swap device in __folio_throttle_swaprate()	2024-05-05 17:53:42 -07:00
truncate.c	mm: convert pagecache_isize_extended to use a folio	2024-04-25 20:56:43 -07:00
usercopy.c
userfaultfd.c	userfault; expand folio use in mfill_atomic_install_pte()	2024-05-05 17:53:48 -07:00
util.c	mm: switch mm->get_unmapped_area() to a flag	2024-04-25 20:56:25 -07:00
vmalloc.c	mm: vmalloc: dump page owner info if page is already mapped	2024-05-05 17:53:51 -07:00
vmpressure.c	eventfd: simplify eventfd_signal()	2023-11-28 14:08:38 +01:00
vmscan.c	mm: add per-order mTHP anon_swpout and anon_swpout_fallback counters	2024-05-05 17:53:35 -07:00
vmstat.c	mm, treewide: rename MAX_ORDER to MAX_PAGE_ORDER	2024-01-08 15:27:15 -08:00
workingset.c	mm: move mapping_set_update out of <linux/swap.h>	2024-02-21 11:36:50 +05:30
z3fold.c	mm: zpool: return pool size in pages	2024-04-25 20:55:48 -07:00
zbud.c	mm: zpool: return pool size in pages	2024-04-25 20:55:48 -07:00
zpool.c	mm: zpool: return pool size in pages	2024-04-25 20:55:48 -07:00
zsmalloc.c	mm: zpool: return pool size in pages	2024-04-25 20:55:48 -07:00
zswap.c	mm: zswap: remove same_filled module params	2024-05-05 17:53:38 -07:00