Don't hold a mutex while calling sbwait. This was found by syzkaller.

Submitted by:		rrs@
Reported by:		markj@
MFC after:		1 week

This commit is contained in:

Michael Tuexen

2019-07-23 18:31:07 +00:00

parent 2dc2d58035

commit 9a4f1a2492

1 changed files with 4 additions and 4 deletions

									
										sys/netinet/sctp_output.c
									
		+4
		-4
	
												View File
												
				@@ -13409,10 +13409,10 @@ sctp_lower_sosend(struct socket *so,

									    stcb,

									    SCTP_OUTPUT_FROM_USR_SEND, SCTP_SO_LOCKED);

								}

								if (hold_tcblock == 1) {

									SCTP_TCB_UNLOCK(stcb);

									hold_tcblock = 0;

								}

							}

							if (hold_tcblock == 1) {

								SCTP_TCB_UNLOCK(stcb);

								hold_tcblock = 0;

							}

							SOCKBUF_LOCK(&so->so_snd);

							/*-