https://github.com/torvalds/linux
Revision 7e09e738afd21ef99f047425fc0b0c9be8b03254 authored by Hugh Dickins on 21 March 2014, 04:52:17 UTC, committed by Linus Torvalds on 21 March 2014, 05:09:09 UTC
Add remove_linear_migration_ptes_from_nonlinear(), to fix an interesting little include/linux/swapops.h:131 BUG_ON(!PageLocked) found by trinity: indicating that remove_migration_ptes() failed to find one of the migration entries that was temporarily inserted. The problem comes from remap_file_pages()'s switch from vma_interval_tree (good for inserting the migration entry) to i_mmap_nonlinear list (no good for locating it again); but can only be a problem if the remap_file_pages() range does not cover the whole of the vma (zap_pte() clears the range). remove_migration_ptes() needs a file_nonlinear method to go down the i_mmap_nonlinear list, applying linear location to look for migration entries in those vmas too, just in case there was this race. The file_nonlinear method does need rmap_walk_control.arg to do this; but it never needed vma passed in - vma comes from its own iteration. Reported-and-tested-by: Dave Jones <davej@redhat.com> Reported-and-tested-by: Sasha Levin <sasha.levin@oracle.com> Signed-off-by: Hugh Dickins <hughd@google.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
1 parent 3fb725c
Tip revision: 7e09e738afd21ef99f047425fc0b0c9be8b03254 authored by Hugh Dickins on 21 March 2014, 04:52:17 UTC
mm: fix swapops.h:131 bug if remap_file_pages raced migration
mm: fix swapops.h:131 bug if remap_file_pages raced migration
Tip revision: 7e09e73
File | Mode | Size |
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asymmetric_keys | ||
async_tx | ||
842.c | -rw-r--r-- | 4.6 KB |
Kconfig | -rw-r--r-- | 40.0 KB |
Makefile | -rw-r--r-- | 3.8 KB |
ablk_helper.c | -rw-r--r-- | 4.2 KB |
ablkcipher.c | -rw-r--r-- | 17.8 KB |
aead.c | -rw-r--r-- | 14.0 KB |
aes_generic.c | -rw-r--r-- | 61.9 KB |
af_alg.c | -rw-r--r-- | 9.3 KB |
ahash.c | -rw-r--r-- | 12.8 KB |
algapi.c | -rw-r--r-- | 19.8 KB |
algboss.c | -rw-r--r-- | 6.4 KB |
algif_hash.c | -rw-r--r-- | 6.8 KB |
algif_skcipher.c | -rw-r--r-- | 13.3 KB |
ansi_cprng.c | -rw-r--r-- | 10.8 KB |
anubis.c | -rw-r--r-- | 27.8 KB |
api.c | -rw-r--r-- | 13.4 KB |
arc4.c | -rw-r--r-- | 3.4 KB |
authenc.c | -rw-r--r-- | 20.0 KB |
authencesn.c | -rw-r--r-- | 23.1 KB |
blkcipher.c | -rw-r--r-- | 19.4 KB |
blowfish_common.c | -rw-r--r-- | 15.7 KB |
blowfish_generic.c | -rw-r--r-- | 3.4 KB |
camellia_generic.c | -rw-r--r-- | 34.9 KB |
cast5_generic.c | -rw-r--r-- | 20.8 KB |
cast6_generic.c | -rw-r--r-- | 9.5 KB |
cast_common.c | -rw-r--r-- | 13.1 KB |
cbc.c | -rw-r--r-- | 7.4 KB |
ccm.c | -rw-r--r-- | 21.4 KB |
chainiv.c | -rw-r--r-- | 8.5 KB |
cipher.c | -rw-r--r-- | 3.3 KB |
cmac.c | -rw-r--r-- | 7.5 KB |
compress.c | -rw-r--r-- | 1.3 KB |
crc32.c | -rw-r--r-- | 3.7 KB |
crc32c.c | -rw-r--r-- | 4.3 KB |
crct10dif_common.c | -rw-r--r-- | 3.6 KB |
crct10dif_generic.c | -rw-r--r-- | 3.2 KB |
cryptd.c | -rw-r--r-- | 24.9 KB |
crypto_null.c | -rw-r--r-- | 4.4 KB |
crypto_user.c | -rw-r--r-- | 12.3 KB |
crypto_wq.c | -rw-r--r-- | 968 bytes |
ctr.c | -rw-r--r-- | 12.3 KB |
cts.c | -rw-r--r-- | 9.8 KB |
deflate.c | -rw-r--r-- | 5.4 KB |
des_generic.c | -rw-r--r-- | 35.3 KB |
ecb.c | -rw-r--r-- | 4.9 KB |
eseqiv.c | -rw-r--r-- | 6.5 KB |
fcrypt.c | -rw-r--r-- | 18.0 KB |
fips.c | -rw-r--r-- | 705 bytes |
gcm.c | -rw-r--r-- | 36.6 KB |
gf128mul.c | -rw-r--r-- | 13.2 KB |
ghash-generic.c | -rw-r--r-- | 3.7 KB |
hash_info.c | -rw-r--r-- | 1.8 KB |
hmac.c | -rw-r--r-- | 6.9 KB |
internal.h | -rw-r--r-- | 4.1 KB |
khazad.c | -rw-r--r-- | 51.8 KB |
krng.c | -rw-r--r-- | 1.4 KB |
lrw.c | -rw-r--r-- | 9.2 KB |
lz4.c | -rw-r--r-- | 2.5 KB |
lz4hc.c | -rw-r--r-- | 2.5 KB |
lzo.c | -rw-r--r-- | 2.4 KB |
md4.c | -rw-r--r-- | 6.2 KB |
md5.c | -rw-r--r-- | 3.9 KB |
memneq.c | -rw-r--r-- | 6.1 KB |
michael_mic.c | -rw-r--r-- | 3.6 KB |
pcbc.c | -rw-r--r-- | 7.7 KB |
pcompress.c | -rw-r--r-- | 3.0 KB |
pcrypt.c | -rw-r--r-- | 14.7 KB |
proc.c | -rw-r--r-- | 3.7 KB |
ripemd.h | -rw-r--r-- | 974 bytes |
rmd128.c | -rw-r--r-- | 10.2 KB |
rmd160.c | -rw-r--r-- | 12.6 KB |
rmd256.c | -rw-r--r-- | 10.5 KB |
rmd320.c | -rw-r--r-- | 13.1 KB |
rng.c | -rw-r--r-- | 3.3 KB |
salsa20_generic.c | -rw-r--r-- | 6.7 KB |
scatterwalk.c | -rw-r--r-- | 3.3 KB |
seed.c | -rw-r--r-- | 17.4 KB |
seqiv.c | -rw-r--r-- | 8.5 KB |
serpent_generic.c | -rw-r--r-- | 21.2 KB |
sha1_generic.c | -rw-r--r-- | 3.5 KB |
sha256_generic.c | -rw-r--r-- | 12.1 KB |
sha512_generic.c | -rw-r--r-- | 8.7 KB |
shash.c | -rw-r--r-- | 17.5 KB |
tcrypt.c | -rw-r--r-- | 50.2 KB |
tcrypt.h | -rw-r--r-- | 3.7 KB |
tea.c | -rw-r--r-- | 6.6 KB |
testmgr.c | -rw-r--r-- | 69.4 KB |
testmgr.h | -rw-r--r-- | 965.5 KB |
tgr192.c | -rw-r--r-- | 30.5 KB |
twofish_common.c | -rw-r--r-- | 37.8 KB |
twofish_generic.c | -rw-r--r-- | 6.2 KB |
vmac.c | -rw-r--r-- | 18.9 KB |
wp512.c | -rw-r--r-- | 59.7 KB |
xcbc.c | -rw-r--r-- | 7.2 KB |
xor.c | -rw-r--r-- | 4.0 KB |
xts.c | -rw-r--r-- | 8.7 KB |
zlib.c | -rw-r--r-- | 9.5 KB |
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