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authorOleg Nesterov <[email protected]>2014-09-02 19:57:27 +0200
committerH. Peter Anvin <[email protected]>2014-09-02 14:51:16 -0700
commit5e23fee23ea10730c752edce1777e6b7e727290f (patch)
tree61f1a52fe56b38602b00e8b709f0a456b5ccfaef /net/lapb/lapb_subr.c
parentf1853505d9ca1c3ea27c29cf83c24661531c527b (diff)
x86, fpu: copy_process: Sanitize fpu->last_cpu initialization
Cosmetic, but imho memset(&dst->thread.fpu, 0) is not good simply because it hides the (important) usage of ->has_fpu/etc from grep. Change this code to initialize the members explicitly. And note that ->last_cpu = 0 looks simply wrong, this can confuse fpu_lazy_restore() if per_cpu(fpu_owner_task, 0) has already exited and copy_process() re-allocated the same task_struct. Fortunately this is not actually possible because child->fpu_counter == 0 and thus fpu_lazy_restore() will not be called, but still this is not clean/robust. Signed-off-by: Oleg Nesterov <[email protected]> Link: http://lkml.kernel.org/r/[email protected] Reviewed-by: Suresh Siddha <[email protected]> Signed-off-by: H. Peter Anvin <[email protected]>
Diffstat (limited to 'net/lapb/lapb_subr.c')
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