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a872ff0cb2
first_tid:
/* If nr exceeds the number of threads there is nothing todo */
if (nr) {
if (nr >= get_nr_threads(leader))
goto done;
}
This is not reliable: sub-threads can exit after this check, so the
'for' loop below can overlap and proc_task_readdir() can return an
already filldir'ed dirents.
for (; pos && pid_alive(pos); pos = next_thread(pos)) {
if (--nr > 0)
continue;
Off-by-one error, will return 'leader' when nr == 1.
This patch tries to fix these problems and simplify the code.
Signed-off-by: Oleg Nesterov <oleg@tv-sign.ru>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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|---|---|---|
| .. | ||
| array.c | ||
| base.c | ||
| generic.c | ||
| inode-alloc.txt | ||
| inode.c | ||
| internal.h | ||
| kcore.c | ||
| kmsg.c | ||
| Makefile | ||
| mmu.c | ||
| nommu.c | ||
| proc_devtree.c | ||
| proc_misc.c | ||
| proc_tty.c | ||
| root.c | ||
| task_mmu.c | ||
| task_nommu.c | ||
| vmcore.c | ||