Date: Sun, 1 Oct 2017 15:03:44 +0000 (UTC) From: Andriy Gapon <avg@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-11@freebsd.org Subject: svn commit: r324161 - stable/11/sys/cddl/contrib/opensolaris/uts/common/fs/zfs Message-ID: <201710011503.v91F3iPp095209@repo.freebsd.org>
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Author: avg Date: Sun Oct 1 15:03:44 2017 New Revision: 324161 URL: https://svnweb.freebsd.org/changeset/base/324161 Log: MFV r323796: fix memory leak in g_bio zone introduced in r320452 I overlooked the fact that that ZIO_IOCTL_PIPELINE does not include ZIO_STAGE_VDEV_IO_DONE stage. We do allocate a struct bio for an ioctl zio (a disk cache flush), but we never freed it. This change splits bio handling into two groups, one for normal read/write i/o that passes data around and, thus, needs the abd data tranform; the other group is for "data-less" i/o such as trim and cache flush. PR: 222288 Modified: stable/11/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/vdev_geom.c Directory Properties: stable/11/ (props changed) Modified: stable/11/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/vdev_geom.c ============================================================================== --- stable/11/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/vdev_geom.c Sun Oct 1 14:58:43 2017 (r324160) +++ stable/11/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/vdev_geom.c Sun Oct 1 15:03:44 2017 (r324161) @@ -989,6 +989,15 @@ vdev_geom_io_intr(struct bio *bp) break; } + /* + * We have to split bio freeing into two parts, because the ABD code + * cannot be called in this context and vdev_op_io_done is not called + * for ZIO_TYPE_IOCTL zio-s. + */ + if (zio->io_type != ZIO_TYPE_READ && zio->io_type != ZIO_TYPE_WRITE) { + g_destroy_bio(bp); + zio->io_bio = NULL; + } zio_delay_interrupt(zio); } @@ -1090,21 +1099,23 @@ vdev_geom_io_done(zio_t *zio) { struct bio *bp = zio->io_bio; + if (zio->io_type != ZIO_TYPE_READ && zio->io_type != ZIO_TYPE_WRITE) { + ASSERT(bp == NULL); + return; + } + if (bp == NULL) { - ASSERT3S(zio->io_error, !=, 0); - IMPLY(zio->io_type == ZIO_TYPE_READ || - zio->io_type == ZIO_TYPE_WRITE, - zio->io_error == ENXIO); + ASSERT3S(zio->io_error, ==, ENXIO); return; } - if (zio->io_type == ZIO_TYPE_READ) { + if (zio->io_type == ZIO_TYPE_READ) abd_return_buf_copy(zio->io_abd, bp->bio_data, zio->io_size); - } else if (zio->io_type == ZIO_TYPE_WRITE) { + else abd_return_buf(zio->io_abd, bp->bio_data, zio->io_size); - } g_destroy_bio(bp); + zio->io_bio = NULL; } static void
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