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da(4): Fix a TRIM regression introduced in r308155

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According to Warner, multiple TRIM BIOs are collapsed into a single CCB with
NULL bp.  It is invalid to biotrack() NULL, and results in a fault.  So,
don't do that.

Reported by:	asomers@
Sponsored by:	Dell EMC Isilon
This commit is contained in:
cem 2017-04-18 21:05:05 +00:00
parent e42e532ea5
commit 4087477929
1 changed files with 2 additions and 1 deletions
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3
sys/cam/scsi/scsi_da.c
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@ -4169,7 +4169,8 @@ dadone(struct cam_periph *periph, union ccb *done_ccb)
}
}
biotrack(bp, __func__);
if (bp != NULL)
biotrack(bp, __func__);
LIST_REMOVE(&done_ccb->ccb_h, periph_links.le);
if (LIST_EMPTY(&softc->pending_ccbs))
softc->flags |= DA_FLAG_WAS_OTAG;