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authorLinus Torvalds <torvalds@g5.osdl.org>2006-05-07 10:49:33 -0700
committerLinus Torvalds <torvalds@g5.osdl.org>2006-05-07 10:49:33 -0700
commitf5b40e363ad6041a96e3da32281d8faa191597b9 (patch)
tree5f35453cff7acd5df5622a108381bbd011a383c5 /crypto/tcrypt.h
parent5528e568a760442e0ec8fd2dea1f0791875a066b (diff)
Fix ptrace_attach()/ptrace_traceme()/de_thread() race
This holds the task lock (and, for ptrace_attach, the tasklist_lock) over the actual attach event, which closes a race between attacking to a thread that is either doing a PTRACE_TRACEME or getting de-threaded. Thanks to Oleg Nesterov for reminding me about this, and Chris Wright for noticing a lost return value in my first version. Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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