Tetsuo Handa 9f2df09a33 bfs: add sanity check at bfs_fill_super() ... syzbot is reporting too large memory allocation at bfs_fill_super() [1]. Since file system image is corrupted such that bfs_sb->s_start == 0, bfs_fill_super() is trying to allocate 8MB of continuous memory. Fix this by adding a sanity check on bfs_sb->s_start, __GFP_NOWARN and printf(). [1] https://syzkaller.appspot.com/bug?id=16a87c236b951351374a84c8a32f40edbc034e96 Link: http://lkml.kernel.org/r/1525862104-3407-1-git-send-email-penguin-kernel@I-love.SAKURA.ne.jp Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> Reported-by: syzbot <syzbot+71c6b5d68e91149fc8a4@syzkaller.appspotmail.com> Reviewed-by: Andrew Morton <akpm@linux-foundation.org> Cc: Tigran Aivazian <aivazian.tigran@gmail.com> Cc: Matthew Wilcox <willy@infradead.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		2018-11-03 10:09:38 -07:00
..
bfs.h	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
dir.c	bfs_add_entry: pass name/len as qstr pointer	2018-05-22 14:27:50 -04:00
file.c	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
inode.c	bfs: add sanity check at bfs_fill_super()	2018-11-03 10:09:38 -07:00
Kconfig	fs/bfs: remove depends on CONFIG_EXPERIMENTAL	2013-01-21 14:39:04 -08:00
Makefile	Linux-2.6.12-rc2	2005-04-16 15:20:36 -07:00