On 12/10/2015 05:00 AM, Laura Abbott wrote:
Hi,
We received a report
(https://bugzilla.redhat.com/show_bug.cgi?id=1288687) that
live images with the rawhide kernel were failing to boot on USB sticks.
Similar issues were reported when just inserting a USB stick into a
boot from a
CD instead of USB ("I see /dev/sdb, but no /dev/sdb1 etc." per the
report)
I reduced the test scenario to:
1) insert scsi_dh_alua module
2) insert Live USB drive
which gives
[ 125.107185] sd 6:0:0:0: alua: supports implicit and explicit TPGS
[ 125.107778] sd 6:0:0:0: [sdb] 15634432 512-byte logical blocks:
(8.00 GB/7.46 GiB)
[ 125.107973] sd 6:0:0:0: alua: No target port descriptors found
[ 125.107975] sd 6:0:0:0: alua: Attach failed (-22)
[ 125.107978] sd 6:0:0:0: failed to add device handler: -22
[ 125.108462] sd 6:0:0:0: [sdb] Write Protect is off
[ 125.108465] sd 6:0:0:0: [sdb] Mode Sense: 43 00 00 00
[ 125.108468] sd 6:0:0:0: [sdb] Asking for cache data failed
[ 125.108469] sd 6:0:0:0: [sdb] Assuming drive cache: write through
[ 125.109122] ------------[ cut here ]------------
[ 125.109127] WARNING: CPU: 2 PID: 142 at block/genhd.c:626
add_disk+0x480/0x4e0()
[ 125.109128] Modules linked in: uas usb_storage scsi_dh_alua fuse
xt_CHECKSUM
ipt_MASQUERADE nf_nat_masquerade_ipv4 ccm tun nf_conntrack_netbios_ns
nf_conntrack_broadcast ip6t_rpfilter ip6t_REJECT nf_reject_ipv6
xt_conntrack
ebtable_filter ebtable_nat ebtable_broute bridge stp llc ebtables
ip6table_raw
ip6table_security ip6table_nat nf_conntrack_ipv6 nf_defrag_ipv6
nf_nat_ipv6
ip6table_mangle ip6table_filter ip6_tables iptable_raw iptable_security
iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4 nf_nat
nf_conntrack
iptable_mangle bnep snd_hda_codec_hdmi arc4 iwlmvm mac80211 i915
intel_rapl
iosf_mbi x86_pkg_temp_thermal coretemp iwlwifi kvm_intel kvm
snd_hda_codec_realtek uvcvideo snd_hda_codec_generic btusb
snd_hda_intel btrtl
videobuf2_vmalloc cfg80211 snd_hda_codec btbcm iTCO_wdt videobuf2_v4l2
[ 125.109164] btintel iTCO_vendor_support videobuf2_core irqbypass
videobuf2_memops bluetooth v4l2_common snd_hda_core ghash_clmulni_intel
videodev snd_hwdep snd_seq media pcspkr joydev snd_seq_device
rtsx_pci_ms
snd_pcm memstick thinkpad_acpi snd_timer mei_me snd i2c_algo_bit mei
drm_kms_helper ie31200_edac rfkill tpm_tis edac_core shpchp
soundcore tpm
i2c_i801 lpc_ich wmi nfsd auth_rpcgss nfs_acl lockd grace sunrpc
binfmt_misc
dm_crypt hid_microsoft rtsx_pci_sdmmc mmc_core crct10dif_pclmul
crc32_pclmul
crc32c_intel serio_raw drm e1000e ptp rtsx_pci pps_core fjes video
[ 125.109197] CPU: 2 PID: 142 Comm: kworker/u16:6 Tainted: G W
4.4.0-rc4-usbbadness-next-20151209+ #3
[ 125.109198] Hardware name: LENOVO 20BFS0EC00/20BFS0EC00, BIOS
GMET62WW (2.10 ) 03/19/2014
[ 125.109202] Workqueue: events_unbound async_run_entry_fn
[ 125.109204] 0000000000000000 00000000202f2ede ffff880402ccfc38
ffffffff81434509
[ 125.109206] 0000000000000000 ffff880402ccfc70 ffffffff810ad9c2
ffff880407a1e000
[ 125.109208] ffff880407a1e0b0 ffff880407a1e00c ffff880401e48ef0
ffff8800c90d0600
[ 125.109211] Call Trace:
[ 125.109214] [<ffffffff81434509>] dump_stack+0x4b/0x72
[ 125.109218] [<ffffffff810ad9c2>] warn_slowpath_common+0x82/0xc0
[ 125.109220] [<ffffffff810adb0a>] warn_slowpath_null+0x1a/0x20
[ 125.109222] [<ffffffff81414910>] add_disk+0x480/0x4e0
[ 125.109225] [<ffffffff815e2875>] sd_probe_async+0x115/0x1d0
[ 125.109227] [<ffffffff810d6cea>] async_run_entry_fn+0x4a/0x140
[ 125.109231] [<ffffffff810cbb99>] process_one_work+0x239/0x6b0
[ 125.109233] [<ffffffff810cbb02>] ? process_one_work+0x1a2/0x6b0
[ 125.109235] [<ffffffff810cc05e>] worker_thread+0x4e/0x490
[ 125.109237] [<ffffffff810cc010>] ? process_one_work+0x6b0/0x6b0
[ 125.109238] [<ffffffff810d3091>] kthread+0x101/0x120
[ 125.109242] [<ffffffff81108999>] ?
trace_hardirqs_on_caller+0x129/0x1b0
[ 125.109243] [<ffffffff810d2f90>] ? kthread_create_on_node+0x250/0x250
[ 125.109247] [<ffffffff81888a5f>] ret_from_fork+0x3f/0x70
[ 125.109248] [<ffffffff810d2f90>] ? kthread_create_on_node+0x250/0x250
[ 125.109250] ---[ end trace d54b73ed8d1295d5 ]---
[ 125.109272] sd 6:0:0:0: [sdb] Attached SCSI removable disk
and no partitions so the drive can't be mounted. Note the alua -EINVAL
error is there even when the drive can be mounted so the warning and
lack of partitions is the real indication of the problem.
I did a bisect and came up with this as the first bad commit:
commit 086b91d052ebe4ead5d28021afe3bdfd70af15bf
Author: Christoph Hellwig <hch@xxxxxx>
Date: Thu Aug 27 14:16:57 2015 +0200
scsi_dh: integrate into the core SCSI code
Stop building scsi_dh as a separate module and integrate it fully
into the
core SCSI code with explicit callouts at bus scan time. For now the
callouts are placed at the same point as the old bus notifiers were
called,
but in the future we will be able to look at ALUA INQUIRY data
earlier on.
Note that this also means that the device handler modules need to be
loaded
by the time we scan the bus. The next patches will add support for
autoloading device handlers at bus scan time to make sure they are
always
loaded if they are enabled in the kernel config.
Signed-off-by: Christoph Hellwig <hch@xxxxxx>
Reviewed-by: Martin K. Petersen <martin.petersen@xxxxxxxxxx>
Reviewed-by: Hannes Reinecke <hare@xxxxxxx>
Acked-by: Mike Snitzer <snitzer@xxxxxxxxxx>
Signed-off-by: James Bottomley <JBottomley@xxxxxxxx>
This was an involved commit so I didn't try to revert. Any ideas here?
Full bisect log is below
There's a patchset to update the ALUA handler in Martin Petersens
tree which should help here; most notably the commit 'scsi: ignore
errors from scsi_dh_add_device()' should fix this particular issue.
Cheers,
Hannes
--
Dr. Hannes Reinecke zSeries & Storage
hare@xxxxxxx +49 911 74053 688
SUSE LINUX GmbH, Maxfeldstr. 5, 90409 Nürnberg
GF: F. Imendörffer, J. Smithard, J. Guild, D. Upmanyu, G. Norton
HRB 21284 (AG Nürnberg)
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