ptrace_check_attach: remove unneeded ->signal != NULL check

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It is not possible to see the PT_PTRACED task without ->signal/sighand under
tasklist_lock, release_task() does ptrace_unlink() first.  If the task was
already released before, ptrace_attach() can't succeed and set PT_PTRACED.
Remove this check.

Signed-off-by: Oleg Nesterov <oleg@tv-sign.ru>
Acked-by: Roland McGrath <roland@redhat.com>
Cc: Christoph Hellwig <hch@lst.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

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Oleg Nesterov 2008-02-08 04:19:00 -08:00 • committed by Linus Torvalds

parent 34a1738f7d

commit c0c0b649d6

1 changed files with 5 additions and 2 deletions

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kernel/ptrace.c

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