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authorOleg Nesterov <oleg@tv-sign.ru>2005-10-30 15:02:54 -0800
committerLinus Torvalds <torvalds@g5.osdl.org>2005-10-30 17:37:25 -0800
commit1291cf4163d21f1b4999d697cbf68d38e7151c28 (patch)
tree0e1c3e3970216c769f91f6077b0e23d47d6fd333 /drivers/char
parentf7232056bff5fe2d3bfeab35252a66ebaeb5bbde (diff)
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[PATCH] fix de_thread() vs do_coredump() deadlock
de_thread() sends SIGKILL to all sub-threads and waits them to die in 'D' state. It is possible that one of the threads already dequeued coredump signal. When de_thread() unlocks ->sighand->lock that thread can enter do_coredump()->coredump_wait() and cause a deadlock. Signed-off-by: Oleg Nesterov <oleg@tv-sign.ru> Cc: Roland McGrath <roland@redhat.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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