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authorOGAWA Hirofumi <hirofumi@mail.parknet.co.jp>2017-03-10 03:17:37 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2017-03-10 04:01:10 +0300
commitc0d0e351285161a515396b7b1ee53ec9ffd97e3c (patch)
tree10a446f71ea3e4ec0e82abadbda61bbdb79bdac1 /fs/userfaultfd.c
parentca5b58ea3db88b5e69ba2a1f6bc3cf239cdcc64f (diff)
downloadlinux-c0d0e351285161a515396b7b1ee53ec9ffd97e3c.tar.xz
fat: fix using uninitialized fields of fat_inode/fsinfo_inode
Recently fallocate patch was merged and it uses MSDOS_I(inode)->mmu_private at fat_evict_inode(). However, fat_inode/fsinfo_inode that was introduced in past didn't initialize MSDOS_I(inode) properly. With those combinations, it became the cause of accessing random entry in FAT area. Link: http://lkml.kernel.org/r/87pohrj4i8.fsf@mail.parknet.co.jp Signed-off-by: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp> Reported-by: Moreno Bartalucci <moreno.bartalucci@tecnorama.it> Tested-by: Moreno Bartalucci <moreno.bartalucci@tecnorama.it> Cc: <stable@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'fs/userfaultfd.c')
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