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8ec01d311d112e55a5cd3db01e9d950b17a36f7c
linux/mm
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Shakeel Butt 9abd7eae28 mm/list_lru.c: fix memory leak in __memcg_init_list_lru_node 
commit 3510955b32 upstream.

Syzbot reported following memory leak:

ffffffffda RBX: 0000000000000003 RCX: 0000000000441f79
BUG: memory leak
unreferenced object 0xffff888114f26040 (size 32):
  comm "syz-executor626", pid 7056, jiffies 4294948701 (age 39.410s)
  hex dump (first 32 bytes):
    40 60 f2 14 81 88 ff ff 40 60 f2 14 81 88 ff ff  @`......@`......
    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
  backtrace:
     slab_post_alloc_hook mm/slab.h:439 [inline]
     slab_alloc mm/slab.c:3326 [inline]
     kmem_cache_alloc_trace+0x13d/0x280 mm/slab.c:3553
     kmalloc include/linux/slab.h:547 [inline]
     __memcg_init_list_lru_node+0x58/0xf0 mm/list_lru.c:352
     memcg_init_list_lru_node mm/list_lru.c:375 [inline]
     memcg_init_list_lru mm/list_lru.c:459 [inline]
     __list_lru_init+0x193/0x2a0 mm/list_lru.c:626
     alloc_super+0x2e0/0x310 fs/super.c:269
     sget_userns+0x94/0x2a0 fs/super.c:609
     sget+0x8d/0xb0 fs/super.c:660
     mount_nodev+0x31/0xb0 fs/super.c:1387
     fuse_mount+0x2d/0x40 fs/fuse/inode.c:1236
     legacy_get_tree+0x27/0x80 fs/fs_context.c:661
     vfs_get_tree+0x2e/0x120 fs/super.c:1476
     do_new_mount fs/namespace.c:2790 [inline]
     do_mount+0x932/0xc50 fs/namespace.c:3110
     ksys_mount+0xab/0x120 fs/namespace.c:3319
     __do_sys_mount fs/namespace.c:3333 [inline]
     __se_sys_mount fs/namespace.c:3330 [inline]
     __x64_sys_mount+0x26/0x30 fs/namespace.c:3330
     do_syscall_64+0x76/0x1a0 arch/x86/entry/common.c:301
     entry_SYSCALL_64_after_hwframe+0x44/0xa9

This is a simple off by one bug on the error path.

Link: http://lkml.kernel.org/r/20190528043202.99980-1-shakeelb@google.com
Fixes: 60d3fd32a7 ("list_lru: introduce per-memcg lists")
Reported-by: syzbot+f90a420dfe2b1b03cb2c@syzkaller.appspotmail.com
Signed-off-by: Shakeel Butt <shakeelb@google.com>
Acked-by: Michal Hocko <mhocko@suse.com>
Reviewed-by: Kirill Tkhai <ktkhai@virtuozzo.com>
Cc: <stable@vger.kernel.org>	[4.0+]
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2023-05-15 13:48:37 +09:00
..
kasan
kasan: avoid -Wmaybe-uninitialized warning
2023-05-15 12:37:55 +09:00
backing-dev.c
writeback: synchronize sync(2) against cgroup writeback membership switches
2023-05-15 12:52:00 +09:00
balloon_compaction.c
mm: balloon: use general non-lru movable page feature
2016-07-26 16:19:19 -07:00
bootmem.c
mm: kmemleak: avoid using __va() on addresses that don't have a lowmem mapping
2016-10-11 15:06:33 -07:00
cleancache.c
cleancache: constify cleancache_ops structure
2016-01-27 09:09:57 -05:00
cma_debug.c
mm/cma_debug.c: fix the break condition in cma_maxchunk_get()
2023-05-15 13:47:15 +09:00
cma.c
mm/cma.c: fix crash on CMA allocation if bitmap allocation fails
2023-05-15 13:47:13 +09:00
cma.h
codec_mm: add reserved & cma support for 4.9. [1/1]
2018-11-05 05:36:36 -07:00
compaction.c
Amlogic: sync the code from mainline. [1/1]
2020-02-04 13:48:58 +09:00
debug_page_ref.c
mm/page_ref: add tracepoint to track down page reference manipulation
2016-03-17 15:09:34 -07:00
debug.c
mm: get rid of vmacache_flush_all() entirely
2023-05-15 08:15:04 +09:00
dmapool.c
mm: convert printk(KERN_<LEVEL> to pr_<level>
2016-03-17 15:09:34 -07:00
early_ioremap.c
mm/early_ioremap: Fix boot hang with earlyprintk=efi,keep
2018-02-25 11:05:49 +01:00
fadvise.c
mm/fadvise.c: fix signed overflow UBSAN complaint
2023-05-12 17:25:57 +09:00
failslab.c
mm: fault-inject take over bootstrap kmem_cache check
2016-03-15 16:55:16 -07:00
filemap.c
Merge 4.9.96 into android-4.9
2018-04-24 11:26:46 +02:00
frame_vector.c
mm/frame_vector.c: release a semaphore in 'get_vaddr_frames()'
2023-05-15 09:13:14 +09:00
frontswap.c
mm, frontswap: convert frontswap_enabled to static key
2016-07-26 16:19:19 -07:00
gup.c
mm: prevent get_user_pages() from overflowing page refcount
2023-05-15 13:40:39 +09:00
highmem.c
mm/highmem: make nr_free_highpages() handles all highmem zones by itself
2016-05-19 19:12:14 -07:00
huge_memory.c
mm/huge_memory: fix lockdep complaint on 32-bit i_size_read()
2023-05-15 10:04:53 +09:00
hugetlb_cgroup.c
mm, hugetlb_cgroup: round limit_in_bytes down to hugepage size
2016-05-20 17:58:30 -07:00
hugetlb.c
hugetlbfs: on restore reserve error path retain subpool reservation
2023-05-15 13:47:09 +09:00
hwpoison-inject.c
…
init-mm.c
mm: Add a user_ns owner to mm_struct and fix ptrace permission checks
2017-01-06 10:40:13 +01:00
internal.h
mm: use is_migrate_highatomic() to simplify the code
2020-12-17 17:23:23 +09:00
interval_tree.c
…
Kconfig
mm: don't allow deferred pages with NEED_PER_CPU_KM
2018-05-22 16:57:57 +02:00
Kconfig.debug
PM / Hibernate: allow hibernation with PAGE_POISONING_ZERO
2016-09-13 02:35:27 +02:00
khugepaged.c
mm/khugepaged: collapse_shmem() do not crash on Compound
2023-05-15 10:04:59 +09:00
kmemcheck.c
mm: convert printk(KERN_<LEVEL> to pr_<level>
2016-03-17 15:09:34 -07:00
kmemleak-test.c
mm: convert printk(KERN_<LEVEL> to pr_<level>
2016-03-17 15:09:34 -07:00
kmemleak.c
kmemleak: system would panic after enabling kmemleak [1/1]
2020-12-17 17:23:23 +09:00
ksm.c
Amlogic: sync the code from mainline. [1/1]
2020-02-04 13:48:58 +09:00
list_lru.c
mm/list_lru.c: fix memory leak in __memcg_init_list_lru_node
2023-05-15 13:48:37 +09:00
maccess.c
x86: remove more uaccess_32.h complexity
2016-05-22 17:21:27 -07:00
madvise.c
mm: madvise(MADV_DODUMP): allow hugetlbfs pages
2023-05-15 08:33:50 +09:00
Makefile
Disable the __builtin_return_address() warning globally after all
2016-10-12 10:23:41 -07:00
memblock.c
mm/memblock.c: reversed logic in memblock_discard()
2017-08-30 10:21:47 +02:00
memcontrol.c
memcg: remove memcg_cgroup::id from IDR on mem_cgroup_css_alloc() failure
2023-05-12 17:14:41 +09:00
memory_hotplug.c
mm, memory_hotplug: test_pages_in_a_zone do not pass the end of zone
2023-05-15 11:50:40 +09:00
memory-failure.c
mm: hwpoison: fix thp split handing in soft_offline_in_use_page()
2023-05-15 12:06:12 +09:00
memory.c
mm: stop leaking PageTables
2023-05-15 11:34:46 +09:00
mempolicy.c
mm: mempolicy: make mbind() return -EIO when MPOL_MF_STRICT is specified
2023-05-15 12:16:43 +09:00
mempool.c
Revert "mm, mempool: only set __GFP_NOMEMALLOC if there are free elements"
2016-07-28 16:07:41 -07:00
memtest.c
…
migrate.c
hugetlbfs: fix races and page leaks during migration
2023-05-15 11:50:08 +09:00
mincore.c
mm/mincore.c: make mincore() more conservative
2023-05-15 12:51:27 +09:00
mlock.c
Merge 4.9.31 into android-4.9
2017-06-07 12:37:47 +02:00
mm_init.c
mm: convert printk(KERN_<LEVEL> to pr_<level>
2016-03-17 15:09:34 -07:00
mmap.c
mm: enforce min addr even if capable() in expand_downwards()
2023-05-15 11:45:49 +09:00
mmu_context.c
mm/mmu_context, sched/core: Fix mmu_context.h assumption
2016-04-28 11:44:19 +02:00
mmu_notifier.c
fix Christoph's email addresses
2016-03-17 15:09:34 -07:00
mmzone.c
mm: optimize for lowmemory killer
2018-04-17 17:58:08 -08:00
mprotect.c
x86/speculation/l1tf: Disallow non privileged high MMIO PROT_NONE mappings
2023-05-12 16:53:04 +09:00
mremap.c
mremap: properly flush TLB before releasing the page (CVE-2018-18281)
2020-12-17 17:23:22 +09:00
msync.c
…
nobootmem.c
mm: discard memblock data later
2017-08-24 17:12:19 -07:00
nommu.c
ptrace: Don't allow accessing an undumpable mm
2017-01-06 10:40:13 +01:00
oom_kill.c
oom, oom_reaper: do not enqueue same task twice
2023-05-15 11:24:09 +09:00
page_alloc.c
mem-hotplug: fix node spanned pages when we have a node with only ZONE_MOVABLE
2023-05-15 13:47:11 +09:00
page_counter.c
…
page_ext.c
mm/page_ext.c: fix an imbalance with kmemleak
2023-05-15 12:16:51 +09:00
page_idle.c
mm, vmscan: move lru_lock to the node
2016-07-28 16:07:41 -07:00
page_io.c
mm/page_io.c: replace some BUG_ON()s with VM_BUG_ON_PAGE()
2016-10-07 18:46:29 -07:00
page_isolation.c
mm: optimize for CMA allocate time
2018-03-05 15:34:36 +08:00
page_owner.c
mm/page_owner: don't define fields on struct page_ext by hard-coding
2016-10-07 18:46:27 -07:00
page_poison.c
mm: check the return value of lookup_page_ext for all call sites
2016-06-03 15:06:22 -07:00
page-writeback.c
mm/page-writeback.c: don't break integrity writeback on ->writepage() error
2023-05-15 11:05:30 +09:00
pagewalk.c
mm/pagewalk.c: report holes in hugetlb ranges
2017-11-24 08:33:42 +01:00
percpu-km.c
mm: percpu: use pr_fmt to prefix output
2016-03-17 15:09:34 -07:00
percpu-vm.c
…
percpu.c
percpu: stop printing kernel addresses
2023-05-15 12:28:14 +09:00
pgtable-generic.c
mm/thp/migration: switch from flush_tlb_range to flush_pmd_tlb_range
2016-03-17 15:09:34 -07:00
process_vm_access.c
mm: remove write/force parameters from __get_user_pages_unlocked()
2016-10-18 14:13:37 -07:00
quicklist.c
fix Christoph's email addresses
2016-03-17 15:09:34 -07:00
readahead.c
Merge branch 'android-4.9' into amlogic-4.9-dev
2018-04-24 17:43:19 +08:00
rmap.c
mm: migration: fix migration of huge PMD shared pages
2023-05-15 09:27:49 +09:00
shmem.c
tmpfs: fix uninitialized return value in shmem_link
2023-05-15 12:05:41 +09:00
slab_common.c
mm: don't warn about large allocations for slab
2023-05-15 09:57:36 +09:00
slab.c
mm/slab.c: fix an infinite loop in leaks_show()
2023-05-15 13:47:17 +09:00
slab.h
slub: move synchronize_sched out of slab_mutex on shrink
2017-03-22 12:43:38 +01:00
slob.c
slub: move synchronize_sched out of slab_mutex on shrink
2017-03-22 12:43:38 +01:00
slub.c
slub: make ->cpu_partial unsigned int
2023-05-15 08:29:33 +09:00
sparse-vmemmap.c
treewide: replace obsolete _refok by __ref
2016-08-02 17:31:41 -04:00
sparse.c
mm/memory_hotplug: set magic number to page->freelist instead of page->lru.next
2017-10-21 17:21:36 +02:00
swap_cgroup.c
mm, swap_cgroup: reschedule when neeed in swap_cgroup_swapoff()
2017-07-05 14:40:17 +02:00
swap_state.c
Amlogic: sync the code from mainline. [1/1]
2020-02-04 13:48:58 +09:00
swap.c
mm: optimize for lowmemory killer
2018-04-17 17:58:08 -08:00
swapfile.c
x86/speculation/l1tf: Limit swap file size to MAX_PA/2
2023-05-12 16:53:07 +09:00
truncate.c
mm: cleancache: fix corruption on missed inode invalidation
2023-05-15 10:06:15 +09:00
usercopy.c
mm: usercopy: Check for module addresses
2016-09-20 16:07:39 -07:00
userfaultfd.c
mm, fs: get rid of PAGE_CACHE_* and page_cache_{get,release} macros
2016-04-04 10:41:08 -07:00
util.c
mm: page_mapped: don't assume compound page is huge or THP
2023-05-15 11:00:59 +09:00
vmacache.c
Amlogic: sync the code from mainline. [1/1]
2020-02-04 13:48:58 +09:00
vmalloc.c
mm/vmalloc.c: fix kernel BUG at mm/vmalloc.c:512!
2023-05-15 12:16:51 +09:00
vmpressure.c
mm: vmpressure: fix sending wrong events on underflow
2017-03-12 06:41:43 +01:00
vmscan.c
mm: remove seemingly spurious reclaimability check from laptop_mode gating
2023-05-15 08:11:03 +09:00
vmstat.c
mm/vmstat.c: fix /proc/vmstat format for CONFIG_DEBUG_TLBFLUSH=y CONFIG_SMP=n
2023-05-15 12:28:09 +09:00
workingset.c
mm: workingset: fix premature shadow node shrinking with cgroups
2017-04-08 09:30:36 +02:00
z3fold.c
mm/z3fold.c: avoid modifying HEADLESS page and minor cleanup
2016-06-03 16:02:55 -07:00
zbud.c
…
zpool.c
…
zsmalloc.c
mm/zsmalloc.c: fix -Wunneeded-internal-declaration warning
2023-05-15 11:45:16 +09:00
zswap.c
zswap: re-check zswap_is_full() after do zswap_shrink()
2023-05-12 17:14:18 +09:00