Files
poky/meta/recipes-kernel/linux/linux-yocto-rt_4.12.bb
Bruce Ashfield 3a417fb868 linux-yocto/4.12: ide:ide-cd: fix kernel panic resulting from missing scsi_req_init
Integrating a backport of upstream commit:

    ide:ide-cd: fix kernel panic resulting from missing scsi_req_init

    commit 79d73346ac05bc31 upstream

    Since we split the scsi_request out of struct request, while the
    standard prep_rq_fn builds 10 byte cmds, it missed to invoke
    scsi_req_init() to initialize certain fields of a scsi_request
    structure (.__cmd[], .cmd, .cmd_len and .sense_len but no other
    members of struct scsi_request).

    An example panic on virtual machines (qemu/virtualbox) to boot
    from IDE cdrom:
    ...
    [    8.754381] Call Trace:
    [    8.755419]  blk_peek_request+0x182/0x2e0
    [    8.755863]  blk_fetch_request+0x1c/0x40
    [    8.756148]  ? ktime_get+0x40/0xa0
    [    8.756385]  do_ide_request+0x37d/0x660
    [    8.756704]  ? cfq_group_service_tree_add+0x98/0xc0
    [    8.757011]  ? cfq_service_tree_add+0x1e5/0x2c0
    [    8.757313]  ? ktime_get+0x40/0xa0
    [    8.757544]  __blk_run_queue+0x3d/0x60
    [    8.757837]  queue_unplugged+0x2f/0xc0
    [    8.758088]  blk_flush_plug_list+0x1f4/0x240
    [    8.758362]  blk_finish_plug+0x2c/0x40
    ...
    [    8.770906] RIP: ide_cdrom_prep_fn+0x63/0x180 RSP: ffff92aec018bae8
    [    8.772329] ---[ end trace 6408481e551a85c9 ]---
    ...

    Fixes: 82ed4db499b8 ("block: split scsi_request out of struct request")

    Signed-off-by: Hongxu Jia <hongxu.jia@windriver.com>
    [bva: modified for 4.12 context]
    Signed-off-by: Bruce Ashfield <bruce.ashfield@windriver.com>

(From OE-Core rev: 089dc30e11a5bbd10bf6bebea6aa0ac2173bc9a3)

Signed-off-by: Bruce Ashfield <bruce.ashfield@windriver.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
2017-11-05 13:40:33 +00:00

39 lines
1.4 KiB
BlitzBasic

KBRANCH ?= "standard/preempt-rt/base"
require recipes-kernel/linux/linux-yocto.inc
# Skip processing of this recipe if it is not explicitly specified as the
# PREFERRED_PROVIDER for virtual/kernel. This avoids errors when trying
# to build multiple virtual/kernel providers, e.g. as dependency of
# core-image-rt-sdk, core-image-rt.
python () {
if d.getVar("PREFERRED_PROVIDER_virtual/kernel") != "linux-yocto-rt":
raise bb.parse.SkipPackage("Set PREFERRED_PROVIDER_virtual/kernel to linux-yocto-rt to enable it")
}
SRCREV_machine ?= "2143b758ad622a73c7c0b3fc8890b81000187635"
SRCREV_meta ?= "cebe198870d781829bd997a188cc34d9f7a61023"
SRC_URI = "git://git.yoctoproject.org/linux-yocto-4.12.git;branch=${KBRANCH};name=machine \
git://git.yoctoproject.org/yocto-kernel-cache;type=kmeta;name=meta;branch=yocto-4.12;destsuffix=${KMETA}"
LINUX_VERSION ?= "4.12.14"
PV = "${LINUX_VERSION}+git${SRCPV}"
KMETA = "kernel-meta"
KCONF_BSP_AUDIT_LEVEL = "2"
LINUX_KERNEL_TYPE = "preempt-rt"
COMPATIBLE_MACHINE = "(qemux86|qemux86-64|qemuarm|qemuppc|qemumips)"
KERNEL_DEVICETREE_qemuarm = "versatile-pb.dtb"
# Functionality flags
KERNEL_EXTRA_FEATURES ?= "features/netfilter/netfilter.scc features/taskstats/taskstats.scc"
KERNEL_FEATURES_append = " ${KERNEL_EXTRA_FEATURES}"
KERNEL_FEATURES_append_qemuall=" cfg/virtio.scc"
KERNEL_FEATURES_append_qemux86=" cfg/sound.scc cfg/paravirt_kvm.scc"
KERNEL_FEATURES_append_qemux86-64=" cfg/sound.scc"