Al Viro f71f94845e um: fix oopsable race in line_close() ... tty->count is decremented only after ->close() had been called and several tasks can hit it in parallel. As the result, using tty->count to check if you are the last one is broken. We end up leaving line->tty not reset to NULL and the next IRQ on that sucker will blow up trying to dereference pointers from kfree'd struct tty. Fix is obvious: we need to use a counter of our own. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Richard Weinberger <richard@nod.at> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		2011-09-14 18:09:37 -07:00
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asm	ptrace: unify show_regs() prototype	2011-07-26 16:49:43 -07:00
shared	um: fix oopsable race in line_close()	2011-09-14 18:09:37 -07:00