diff options
| author | Alexander Bluhm <bluhm@cvs.openbsd.org> | 2023-12-19 21:34:23 +0000 |
|---|---|---|
| committer | Alexander Bluhm <bluhm@cvs.openbsd.org> | 2023-12-19 21:34:23 +0000 |
| commit | 066983495b9bc4f225e0c05fa18808988cb42c09 (patch) | |
| tree | dea8e0f245554f1dba62d8717bdffd35922b37c5 /sys/kern | |
| parent | 585525fa10a9d5fdcdd30f22fb5f2a48140cb88f (diff) | |
Release inpcb mutex while calling sbwait().
As sbwait() may sleep, holding any mutex is not allowed. Call
pru_unlock() before sbwait() in soreceive().
Bug spotted by sashan@; OK sashan@ mvs@
Diffstat (limited to 'sys/kern')
| -rw-r--r-- | sys/kern/uipc_socket.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/sys/kern/uipc_socket.c b/sys/kern/uipc_socket.c index 61d1ab7e6b3..5005fef0932 100644 --- a/sys/kern/uipc_socket.c +++ b/sys/kern/uipc_socket.c @@ -1,4 +1,4 @@ -/* $OpenBSD: uipc_socket.c,v 1.311 2023/12/19 01:11:21 bluhm Exp $ */ +/* $OpenBSD: uipc_socket.c,v 1.312 2023/12/19 21:34:22 bluhm Exp $ */ /* $NetBSD: uipc_socket.c,v 1.21 1996/02/04 02:17:52 christos Exp $ */ /* @@ -1139,13 +1139,14 @@ dontblock: break; SBLASTRECORDCHK(&so->so_rcv, "soreceive sbwait 2"); SBLASTMBUFCHK(&so->so_rcv, "soreceive sbwait 2"); + pru_unlock(so); error = sbwait(so, &so->so_rcv); if (error) { sbunlock(so, &so->so_rcv); - pru_unlock(so); sounlock_shared(so); return (0); } + pru_lock(so); if ((m = so->so_rcv.sb_mb) != NULL) nextrecord = m->m_nextpkt; } |