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android_kernel_samsung_a7y1.../mm
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Shakeel Butt fc6d143add mm/list_lru.c: fix memory leak in __memcg_init_list_lru_node 
commit 3510955b327176fd4cbab5baa75b449f077722a2 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: 60d3fd32a7a9 ("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>
2020-04-06 19:02:54 +02:00
..
kasan A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
backing-dev.c writeback: synchronize sync(2) against cgroup writeback membership switches 2020-04-06 18:12:57 +02:00
balloon_compaction.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
bootmem.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
cleancache.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
cma_debug.c mm/cma_debug.c: fix the break condition in cma_maxchunk_get() 2020-04-06 19:01:41 +02:00
cma.c mm/cma.c: fix crash on CMA allocation if bitmap allocation fails 2020-04-06 19:01:39 +02:00
cma.h A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
compaction.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
debug-pagealloc.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
debug.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
dmapool.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
early_ioremap.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
fadvise.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
failslab.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
filemap.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
frame_vector.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
frontswap.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
gup.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
highmem.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
hpa.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
huge_memory.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
hugetlb_cgroup.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
hugetlb.c hugetlbfs: on restore reserve error path retain subpool reservation 2020-04-06 19:01:37 +02:00
hwpoison-inject.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
init-mm.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
internal.h A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
interval_tree.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
io_record.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
Kconfig A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
Kconfig.debug A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
kmemcheck.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
kmemleak-test.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
kmemleak.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
ksm.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
list_lru.c mm/list_lru.c: fix memory leak in __memcg_init_list_lru_node 2020-04-06 19:02:54 +02:00
maccess.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
madvise.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
Makefile A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
memblock.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
memcontrol.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
memory_hotplug.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
memory-failure.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
memory.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
mempolicy.c mm: mempolicy: make mbind() return -EIO when MPOL_MF_STRICT is specified 2020-04-06 13:43:53 +02:00
mempool.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
memtest.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
migrate.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
mincore.c mm/mincore.c: make mincore() more conservative 2020-04-06 18:12:28 +02:00
mlock.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
mm_init.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
mmap.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
mmu_context.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
mmu_notifier.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
mmzone.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
mprotect.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
mremap.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
msync.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
nobootmem.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
nommu.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
oom_kill.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
page_alloc.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
page_counter.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
page_ext.c mm/page_ext.c: fix an imbalance with kmemleak 2020-04-06 14:22:59 +02:00
page_idle.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
page_io.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
page_isolation.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
page_owner.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
page-writeback.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
pagewalk.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
percpu-km.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
percpu-vm.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
percpu.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
pgtable-generic.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
process_vm_access.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
quicklist.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
readahead.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
rmap.c mm/rmap: replace BUG_ON(anon_vma->degree) with VM_WARN_ON 2020-04-06 11:16:40 +02:00
shmem.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
showmem_extra.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
slab_common.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
slab.c mm/slab.c: kmemleak no scan alien caches 2020-04-06 14:23:23 +02:00
slab.h A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
slob.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
slub.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
sparse-vmemmap.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
sparse.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
swap_cgroup.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
swap_state.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
swap.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
swapfile.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
truncate.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
usercopy.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
userfaultfd.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
util.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
vmacache.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
vmalloc.c mm/vmalloc.c: fix kernel BUG at mm/vmalloc.c:512! 2020-04-06 14:23:12 +02:00
vmpressure.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
vmscan.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
vmstat.c mm/vmstat.c: fix /proc/vmstat format for CONFIG_DEBUG_TLBFLUSH=y CONFIG_SMP=n 2020-04-06 15:57:15 +02:00
workingset.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
zbud.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
zpool.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
zsmalloc.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
zswap.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30