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amd64: clear debug registers on execing 32bit Linux binary

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(cherry picked from commit 94172affa4)
This commit is contained in:
Konstantin Belousov 2021-04-10 02:25:06 +03:00
parent 88d6f049c1
commit 0d51148255
1 changed files with 2 additions and 0 deletions
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2
sys/amd64/linux32/linux32_sysvec.c
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@ -722,6 +722,8 @@ linux_exec_setregs(struct thread *td, struct image_params *imgp,
regs->tf_cs = _ucode32sel;
regs->tf_rbx = (register_t)imgp->ps_strings;
x86_clear_dbregs(pcb);
fpstate_drop(td);
/* Do full restore on return so that we can change to a different %cs */