Revision df9576def004d2cd5beedc00cb6e8901427634b9 authored by Yang Shi on 03 August 2019, 04:48:37 UTC, committed by Linus Torvalds on 03 August 2019, 14:02:00 UTC
When running ltp's oom test with kmemleak enabled, the below warning was triggerred since kernel detects __GFP_NOFAIL & ~__GFP_DIRECT_RECLAIM is passed in: WARNING: CPU: 105 PID: 2138 at mm/page_alloc.c:4608 __alloc_pages_nodemask+0x1c31/0x1d50 Modules linked in: loop dax_pmem dax_pmem_core ip_tables x_tables xfs virtio_net net_failover virtio_blk failover ata_generic virtio_pci virtio_ring virtio libata CPU: 105 PID: 2138 Comm: oom01 Not tainted 5.2.0-next-20190710+ #7 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.10.2-0-g5f4c7b1-prebuilt.qemu-project.org 04/01/2014 RIP: 0010:__alloc_pages_nodemask+0x1c31/0x1d50 ... kmemleak_alloc+0x4e/0xb0 kmem_cache_alloc+0x2a7/0x3e0 mempool_alloc_slab+0x2d/0x40 mempool_alloc+0x118/0x2b0 bio_alloc_bioset+0x19d/0x350 get_swap_bio+0x80/0x230 __swap_writepage+0x5ff/0xb20 The mempool_alloc_slab() clears __GFP_DIRECT_RECLAIM, however kmemleak has __GFP_NOFAIL set all the time due to d9570ee3bd1d4f2 ("kmemleak: allow to coexist with fault injection"). But, it doesn't make any sense to have __GFP_NOFAIL and ~__GFP_DIRECT_RECLAIM specified at the same time. According to the discussion on the mailing list, the commit should be reverted for short term solution. Catalin Marinas would follow up with a better solution for longer term. The failure rate of kmemleak metadata allocation may increase in some circumstances, but this should be expected side effect. Link: http://lkml.kernel.org/r/1563299431-111710-1-git-send-email-yang.shi@linux.alibaba.com Fixes: d9570ee3bd1d4f2 ("kmemleak: allow to coexist with fault injection") Signed-off-by: Yang Shi <yang.shi@linux.alibaba.com> Suggested-by: Catalin Marinas <catalin.marinas@arm.com> Acked-by: Michal Hocko <mhocko@suse.com> Cc: Dmitry Vyukov <dvyukov@google.com> Cc: David Rientjes <rientjes@google.com> Cc: Matthew Wilcox <willy@infradead.org> Cc: Qian Cai <cai@lca.pw> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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adfs | ||
affs | ||
afs | ||
autofs | ||
befs | ||
bfs | ||
btrfs | ||
cachefiles | ||
ceph | ||
cifs | ||
coda | ||
configfs | ||
cramfs | ||
crypto | ||
debugfs | ||
devpts | ||
dlm | ||
ecryptfs | ||
efivarfs | ||
efs | ||
exportfs | ||
ext2 | ||
ext4 | ||
f2fs | ||
fat | ||
freevxfs | ||
fscache | ||
fuse | ||
gfs2 | ||
hfs | ||
hfsplus | ||
hostfs | ||
hpfs | ||
hugetlbfs | ||
iomap | ||
isofs | ||
jbd2 | ||
jffs2 | ||
jfs | ||
kernfs | ||
lockd | ||
minix | ||
nfs | ||
nfs_common | ||
nfsd | ||
nilfs2 | ||
nls | ||
notify | ||
ntfs | ||
ocfs2 | ||
omfs | ||
openpromfs | ||
orangefs | ||
overlayfs | ||
proc | ||
pstore | ||
qnx4 | ||
qnx6 | ||
quota | ||
ramfs | ||
reiserfs | ||
romfs | ||
squashfs | ||
sysfs | ||
sysv | ||
tracefs | ||
ubifs | ||
udf | ||
ufs | ||
unicode | ||
xfs | ||
Kconfig | -rw-r--r-- | 7.6 KB |
Kconfig.binfmt | -rw-r--r-- | 7.6 KB |
Makefile | -rw-r--r-- | 4.3 KB |
aio.c | -rw-r--r-- | 56.0 KB |
anon_inodes.c | -rw-r--r-- | 4.6 KB |
attr.c | -rw-r--r-- | 9.7 KB |
bad_inode.c | -rw-r--r-- | 5.3 KB |
binfmt_aout.c | -rw-r--r-- | 8.3 KB |
binfmt_elf.c | -rw-r--r-- | 63.7 KB |
binfmt_elf_fdpic.c | -rw-r--r-- | 47.1 KB |
binfmt_em86.c | -rw-r--r-- | 2.8 KB |
binfmt_flat.c | -rw-r--r-- | 28.0 KB |
binfmt_misc.c | -rw-r--r-- | 18.5 KB |
binfmt_script.c | -rw-r--r-- | 4.4 KB |
block_dev.c | -rw-r--r-- | 55.2 KB |
buffer.c | -rw-r--r-- | 90.2 KB |
char_dev.c | -rw-r--r-- | 16.5 KB |
compat.c | -rw-r--r-- | 3.2 KB |
compat_binfmt_elf.c | -rw-r--r-- | 3.2 KB |
compat_ioctl.c | -rw-r--r-- | 31.0 KB |
coredump.c | -rw-r--r-- | 21.2 KB |
d_path.c | -rw-r--r-- | 11.2 KB |
dax.c | -rw-r--r-- | 45.8 KB |
dcache.c | -rw-r--r-- | 83.9 KB |
dcookies.c | -rw-r--r-- | 7.1 KB |
direct-io.c | -rw-r--r-- | 40.8 KB |
drop_caches.c | -rw-r--r-- | 1.8 KB |
eventfd.c | -rw-r--r-- | 11.1 KB |
eventpoll.c | -rw-r--r-- | 64.5 KB |
exec.c | -rw-r--r-- | 46.9 KB |
fcntl.c | -rw-r--r-- | 23.3 KB |
fhandle.c | -rw-r--r-- | 6.8 KB |
file.c | -rw-r--r-- | 24.2 KB |
file_table.c | -rw-r--r-- | 10.2 KB |
filesystems.c | -rw-r--r-- | 6.4 KB |
fs-writeback.c | -rw-r--r-- | 72.1 KB |
fs_context.c | -rw-r--r-- | 18.5 KB |
fs_parser.c | -rw-r--r-- | 10.8 KB |
fs_pin.c | -rw-r--r-- | 1.9 KB |
fs_struct.c | -rw-r--r-- | 3.3 KB |
fs_types.c | -rw-r--r-- | 2.5 KB |
fsopen.c | -rw-r--r-- | 11.2 KB |
inode.c | -rw-r--r-- | 59.7 KB |
internal.h | -rw-r--r-- | 5.1 KB |
io_uring.c | -rw-r--r-- | 83.0 KB |
ioctl.c | -rw-r--r-- | 17.7 KB |
libfs.c | -rw-r--r-- | 32.7 KB |
locks.c | -rw-r--r-- | 77.5 KB |
mbcache.c | -rw-r--r-- | 12.0 KB |
mount.h | -rw-r--r-- | 4.0 KB |
mpage.c | -rw-r--r-- | 21.1 KB |
namei.c | -rw-r--r-- | 123.0 KB |
namespace.c | -rw-r--r-- | 96.0 KB |
no-block.c | -rw-r--r-- | 478 bytes |
nsfs.c | -rw-r--r-- | 6.1 KB |
open.c | -rw-r--r-- | 30.0 KB |
pipe.c | -rw-r--r-- | 27.7 KB |
pnode.c | -rw-r--r-- | 15.1 KB |
pnode.h | -rw-r--r-- | 1.9 KB |
posix_acl.c | -rw-r--r-- | 21.5 KB |
proc_namespace.c | -rw-r--r-- | 7.8 KB |
read_write.c | -rw-r--r-- | 50.7 KB |
readdir.c | -rw-r--r-- | 11.3 KB |
select.c | -rw-r--r-- | 34.2 KB |
seq_file.c | -rw-r--r-- | 24.7 KB |
signalfd.c | -rw-r--r-- | 9.0 KB |
splice.c | -rw-r--r-- | 40.2 KB |
stack.c | -rw-r--r-- | 2.5 KB |
stat.c | -rw-r--r-- | 19.4 KB |
statfs.c | -rw-r--r-- | 9.9 KB |
super.c | -rw-r--r-- | 44.7 KB |
sync.c | -rw-r--r-- | 10.4 KB |
timerfd.c | -rw-r--r-- | 13.4 KB |
userfaultfd.c | -rw-r--r-- | 51.1 KB |
utimes.c | -rw-r--r-- | 7.4 KB |
xattr.c | -rw-r--r-- | 23.5 KB |
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