Pull in all non-srandom, non-pledge patches from OpenBSD
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Authored by imp on Sep 15 2017, 1:46 PM.

Details

Reviewers: None
Commits: rS323964: Fix %c for floating values that become 0 when coerced to int.
rS323965: Don't display empty error context.
rS323963: Fix uninitialized variable

Summary

Fix uninitialized variable

echo | awk 'BEGIN {i=$1; print i}' prints a boatload of stack
garbage. NUL terminate the memory returned from malloc to prevent it.

Obtained from: OpenBSD run.c 1.40
Sponsored by: Netflix

Fix %c for floating values that become 0 when coerced to int.

Obtained from: OpenBSD run.c 1.36 (From Jeremy Devenport)
Sponsored by: Netflix, Inc

Don't display empty error context.

Context extraction didn't handle this case and showed uninitialized memory.

Obtained from: OpenBSD lib.c 1.21
Sponsored by: Netflix

Diff Detail

Repository

rS FreeBSD src repository - subversion

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Event Timeline

imp created this revision.Sep 15 2017, 1:46 PM

Closed by commit rS323963: Fix uninitialized variable (authored by imp). · Explain WhySep 24 2017, 5:04 AM

This revision was automatically updated to reflect the committed changes.

Revision Contents
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head/

contrib/

one-true-awk/

lib.c

1 line

Diff 33371

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head/contrib/one-true-awk/lib.c

Show First 20 Lines • Show All 1,629 Lines • ▼ Show 20 Lines	#endif
* fall back to non RFC1323 RTT calculation. Normalize		* fall back to non RFC1323 RTT calculation. Normalize
* timestamp if syncookies were used when this connection		* timestamp if syncookies were used when this connection
* was established.		* was established.
*/		*/
if ((to.to_flags & TOF_TS) && (to.to_tsecr != 0)) {		if ((to.to_flags & TOF_TS) && (to.to_tsecr != 0)) {
to.to_tsecr -= tp->ts_offset;		to.to_tsecr -= tp->ts_offset;
if (TSTMP_GT(to.to_tsecr, tcp_ts_getticks())) {		if (TSTMP_GT(to.to_tsecr, tcp_ts_getticks())) {
to.to_tsecr = 0;		to.to_tsecr = 0;
} else if (tp->t_rxtshift == 1 &&
tp->t_flags & TF_PREVVALID &&
tp->t_badrxtwin != 0 &&
TSTMP_LT(to.to_tsecr, tp->t_badrxtwin)) {
cc_cong_signal(tp, th, CC_RTO_ERR);
}		}
}		}
/*		/*
* Process options only when we get SYN/ACK back. The SYN case		* Process options only when we get SYN/ACK back. The SYN case
* for incoming connections is handled in tcp_syncache.		* for incoming connections is handled in tcp_syncache.
* According to RFC1323 the window field in a SYN (i.e., a <SYN>		* According to RFC1323 the window field in a SYN (i.e., a <SYN>
* or <SYN,ACK>) segment itself is never scaled.		* or <SYN,ACK>) segment itself is never scaled.
* XXX this is traditional behavior, may need to be cleaned up.		* XXX this is traditional behavior, may need to be cleaned up.
▲ Show 20 Lines • Show All 136 Lines • ▼ Show 20 Lines	if (tlen == 0) {
(to.to_flags & TOF_SACK) == 0 &&		(to.to_flags & TOF_SACK) == 0 &&
TAILQ_EMPTY(&tp->snd_holes)) {		TAILQ_EMPTY(&tp->snd_holes)) {
/*		/*
* This is a pure ack for outstanding data.		* This is a pure ack for outstanding data.
*/		*/
TCPSTAT_INC(tcps_predack);		TCPSTAT_INC(tcps_predack);

/*		/*
* "bad retransmit" recovery without timestamps.		* "bad retransmit" recovery.
*/		*/
if ((to.to_flags & TOF_TS) == 0 &&		if (tp->t_rxtshift == 1 &&
tp->t_rxtshift == 1 &&
tp->t_flags & TF_PREVVALID &&		tp->t_flags & TF_PREVVALID &&
tp->t_badrxtwin != 0 &&		tp->t_badrxtwin != 0 &&
TSTMP_LT(ticks, tp->t_badrxtwin)) {		(((to.to_flags & TOF_TS) != 0 &&
		to.to_tsecr != 0 &&
		TSTMP_LT(to.to_tsecr, tp->t_badrxtwin)) \|\|
		((to.to_flags & TOF_TS) == 0 &&
		TSTMP_LT(ticks, tp->t_badrxtwin))))
cc_cong_signal(tp, th, CC_RTO_ERR);		cc_cong_signal(tp, th, CC_RTO_ERR);
}

/*		/*
* Recalculate the transmit timer / rtt.		* Recalculate the transmit timer / rtt.
*		*
* Some boxes send broken timestamp replies		* Some boxes send broken timestamp replies
		rscheffUnsubmitted Done Inline Actions Any specific reason to write the or statement as two separate if clauses? I believe in other parts we do it ((true & x & y & z) \| (false & a & b &c )) - as multiline checks; I don't like them both get executed "always", so at the very least, an "else" just before the 2nd if would be good. The logic looks ok to me. rscheff: Any specific reason to write the or statement as two separate if clauses? I believe in other…
		glebiusUnsubmitted Done Inline Actions I agree with Richard, better one complex if clause. The two clauses are mutually exclusive as one wants TOF_TS and other !TOF_TS, so cc_cong_signal() can be executed only once. My first reading was that it is intentionally written this way cause we may want two calls into cc_cong_singal(), so it was a misleading reading. Oh, the upper level embracing if can also be merged into one big clause: if ((tp->t_rxtshift == 1 && tp->t_flags & TF_PREVVALID && tp->t_badrxtwin != 0) && (((to.to_flags & TOF_TS) != 0 && (to.to_tsecr != 0) && TSTMP_LT(to.to_tsecr, tp->t_badrxtwin)) \|\| ((to.to_flags & TOF_TS) == 0 && TSTMP_LT(ticks, tp->t_badrxtwin)))) cc_cong_signal(tp, th, CC_RTO_ERR); This will also fix lines longer than 79 chars. IMHO, we may slightly violate style(9) and add single space indentation to highlight our three main large blocks (a && (b \|\| c)). glebius: I agree with Richard, better one complex if clause. The two clauses are mutually exclusive as…
		tuexenAuthorUnsubmitted Done Inline Actions Now using one and two spaces of indentation to make the expression more readable. tuexen: Now using one and two spaces of indentation to make the expression more readable.
		tuexenAuthorUnsubmitted Done Inline Actions It was a try to break things up for improved readability by humans. tuexen: It was a try to break things up for improved readability by humans.
* during the SYN+ACK phase, ignore		* during the SYN+ACK phase, ignore
* timestamps of 0 or we could calculate a		* timestamps of 0 or we could calculate a
* huge RTT and blow up the retransmit timer.		* huge RTT and blow up the retransmit timer.
*/		*/
if ((to.to_flags & TOF_TS) != 0 &&		if ((to.to_flags & TOF_TS) != 0 &&
to.to_tsecr) {		to.to_tsecr) {
uint32_t t;		uint32_t t;

▲ Show 20 Lines • Show All 2,424 Lines • Show Last 20 Lines

Pull in all non-srandom, non-pledge patches from OpenBSDClosedPublicActions