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Re: [Qemu-devel] [PATCH for v2.3.0] fw_cfg: add check to validate curren


From: P J P
Subject: Re: [Qemu-devel] [PATCH for v2.3.0] fw_cfg: add check to validate current entry value
Date: Wed, 6 Jan 2016 11:51:58 +0530 (IST)

+-- On Tue, 5 Jan 2016, Stefan Weil wrote --+
| > -        s->cur_offset < e->len) {
| > +    if (s->cur_entry != FW_CFG_INVALID
| > +        && s->cur_entry & FW_CFG_WRITE_CHANNEL
| > +        && e->callback
| > +        && s->cur_offset < e->len) {
| 
| I suggest to test e != NULL instead of s->cur_entry != FW_CFG_INVALID.
| 
| Of course both variants are equivalent, but e != NULL might be easier
| to review and make work of static code analyzers easier, too.

  Yes, I've sent a revised patch with this change.

Thank you.
--
Prasad J Pandit / Red Hat Product Security Team
47AF CE69 3A90 54AA 9045 1053 DD13 3D32 FE5B 041F



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