Date: Wed, 13 Dec 2017 21:59:41 +0000 From: bugzilla-noreply@freebsd.org To: freebsd-scsi@FreeBSD.org Subject: [Bug 224250] Sending SCSI command to ATA device makes kernel triple fault. Message-ID: <bug-224250-5312-vkEWVqXlV8@https.bugs.freebsd.org/bugzilla/> In-Reply-To: <bug-224250-5312@https.bugs.freebsd.org/bugzilla/> References: <bug-224250-5312@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D224250 --- Comment #18 from Scott Long <scottl@FreeBSD.org> --- Comment on attachment 188806 --> https://bugs.freebsd.org/bugzilla/attachment.cgi?id=3D188806 C snippet The assertion is here: VirtualBox-4.3.22/src/VBox/Devices/Storage/DevATA.cpp:5293 if (s->uTxDir =3D=3D PDMBLOCKTXDIR_FROM_DEVICE) AssertRelease(bm->u8Cmd & BM_CMD_WRITE); I'm a bit confused, I believe that the ATA driver sets this bit here: src/sys/dev/ata/ata_all.c if ((ccb->ccb_h.flags & CAM_DIR_MASK) =3D=3D CAM_DIR_IN) request->flags |=3D ATA_R_READ; and src/sys/dev/ata/ata_pci.c ATA_IDX_OUTB(ch, ATA_BMCMD_PORT, (ATA_IDX_INB(ch, ATA_BMCMD_PORT) & ~ATA_BMCMD_WRITE_READ) | ((request->flags & ATA_R_READ) ? ATA_BMCMD_WRITE_READ : 0)| ATA_BMCMD_START_STOP); Maybe this isn't going through ata_pci_dmastart(), or maybe the flags are getting cleared/not copied correctly prior? I don't have time to look into= it further today. --=20 You are receiving this mail because: You are the assignee for the bug.=
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