Default Comment by Bridge
** Attachment added: "xmon log"
https://bugs.launchpad.net/bugs/1618151/+attachment/4730172/+files/136402.log
** Changed in: ubuntu
Assignee: (unassigned) => Taco Screen team (taco-screen-team)
** Package changed: ubuntu => linux (Ubuntu)
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https://bugs.launchpad.net/bugs/1618151
Title:
ISST-LTE: system dropped into xmon at pcibios_release_device+0x5c/0x80
during running dlpar test on monklp3
Status in linux package in Ubuntu:
New
Bug description:
monklp3 is installed with ubuntu 14.04.4. System crashed and dropped
into xmon at pcibios_release_device+0x5c/0x80 during running dlpar
test(CPU, MEM and SLOT).
The output from vterm:
[ 1333.379900] lpfc 0005:a0:00.1: 2:1303 Link Up Event x1 received Data: x1
x1 x20 x0 x0 x0 0
[ 1334.522315] Unable to handle kernel paging request for instruction fetch
[ 1334.522340] Faulting instruction address: 0x2f30613a35303030
cpu 0x42: Vector: 400 (Instruction Access) at [c0000002b35fedd0]
pc: 2f30613a35303030
lr: c000000000047a9c: pcibios_release_device+0x5c/0x80
sp: c0000002b35ff050
msr: 8000000140009033
current = 0xc0000002b35290d0
paca = 0xc000000007b07300 softe: 0 irq_happened: 0x01
pid = 5756, comm = multipathd
enter ? for help
[link register ] c000000000047a9c pcibios_release_device+0x5c/0x80
[c0000002b35ff050] c000000000047a78 pcibios_release_device+0x38/0x80
(unreliable)
[c0000002b35ff080] c000000000585ed4 pci_release_dev+0x84/0xd0
[c0000002b35ff0b0] c00000000066f210 device_release+0x60/0xf0
[c0000002b35ff130] c000000000532a44 kobject_cleanup+0xd4/0x240
[c0000002b35ff1b0] c00000000066f8a4 put_device+0x34/0x50
[c0000002b35ff1e0] c0000000006f3f78 scsi_host_dev_release+0x118/0x180
[c0000002b35ff220] c00000000066f210 device_release+0x60/0xf0
[c0000002b35ff2a0] c000000000532a44 kobject_cleanup+0xd4/0x240
[c0000002b35ff320] c00000000066f8a4 put_device+0x34/0x50
[c0000002b35ff350] d00000000533096c fc_rport_dev_release+0x2c/0x50
[scsi_transport_fc]
[c0000002b35ff380] c00000000066f210 device_release+0x60/0xf0
[c0000002b35ff400] c000000000532a44 kobject_cleanup+0xd4/0x240
[c0000002b35ff480] c00000000066f8a4 put_device+0x34/0x50
[c0000002b35ff4b0] c000000000700550 scsi_target_dev_release+0x40/0x60
[c0000002b35ff4e0] c00000000066f210 device_release+0x60/0xf0
[c0000002b35ff560] c000000000532a44 kobject_cleanup+0xd4/0x240
[c0000002b35ff5e0] c00000000066f8a4 put_device+0x34/0x50
[c0000002b35ff610] c000000000704e68
scsi_device_dev_release_usercontext+0x178/0x1b0
[c0000002b35ff670] c0000000000d69d4 execute_in_process_context+0xa4/0xd0
[c0000002b35ff6a0] c000000000704cd4 scsi_device_dev_release+0x34/0x50
[c0000002b35ff6d0] c00000000066f210 device_release+0x60/0xf0
[c0000002b35ff750] c000000000532a44 kobject_cleanup+0xd4/0x240
[c0000002b35ff7d0] c00000000066f8a4 put_device+0x34/0x50
[c0000002b35ff800] c0000000006f1a60 scsi_device_put+0x40/0x60
[c0000002b35ff830] c000000000716568 scsi_disk_put+0x58/0x90
[c0000002b35ff870] c000000000311398 __blkdev_put+0x278/0x2e0
[c0000002b35ff8f0] c0000000008861bc dm_put_table_device+0xcc/0x140
[c0000002b35ff930] c00000000088b12c dm_put_device+0x9c/0x130
[c0000002b35ff9b0] d000000005f31864 free_priority_group+0xe4/0x140
[dm_multipath]
[c0000002b35ffa10] d000000005f31944 free_multipath+0x84/0xf0 [dm_multipath]
[c0000002b35ffa60] c00000000088c310 dm_table_destroy+0xb0/0x1a0
[c0000002b35ffaf0] c000000000891b9c dev_suspend+0x14c/0x330
[c0000002b35ffb30] c000000000892a8c ctl_ioctl+0x1cc/0x380
[c0000002b35ffd10] c000000000892c78 dm_ctl_ioctl+0x38/0x50
[c0000002b35ffd40] c0000000002d7380 do_vfs_ioctl+0x4f0/0x7c0
[c0000002b35ffde0] c0000000002d7724 SyS_ioctl+0xd4/0xf0
[c0000002b35ffe30] c000000000009204 system_call+0x38/0xb4
--- Exception: c01 (System Call) at 00003fff88031480
SP (3fff87addb20) is in userspace
42:mon> e
cpu 0x42: Vector: 400 (Instruction Access) at [c0000002b35fedd0]
pc: 2f30613a35303030
lr: c000000000047a9c: pcibios_release_device+0x5c/0x80
sp: c0000002b35ff050
msr: 8000000140009033
current = 0xc0000002b35290d0
paca = 0xc000000007b07300 softe: 0 irq_happened: 0x01
pid = 5756, comm = multipathd
42:mon> t
[link register ] c000000000047a9c pcibios_release_device+0x5c/0x80
[c0000002b35ff050] c000000000047a78 pcibios_release_device+0x38/0x80
(unreliable)
[c0000002b35ff080] c000000000585ed4 pci_release_dev+0x84/0xd0
[c0000002b35ff0b0] c00000000066f210 device_release+0x60/0xf0
[c0000002b35ff130] c000000000532a44 kobject_cleanup+0xd4/0x240
[c0000002b35ff1b0] c00000000066f8a4 put_device+0x34/0x50
[c0000002b35ff1e0] c0000000006f3f78 scsi_host_dev_release+0x118/0x180
[c0000002b35ff220] c00000000066f210 device_release+0x60/0xf0
[c0000002b35ff2a0] c000000000532a44 kobject_cleanup+0xd4/0x240
[c0000002b35ff320] c00000000066f8a4 put_device+0x34/0x50
[c0000002b35ff350] d00000000533096c fc_rport_dev_release+0x2c/0x50
[scsi_transport_fc]
[c0000002b35ff380] c00000000066f210 device_release+0x60/0xf0
[c0000002b35ff400] c000000000532a44 kobject_cleanup+0xd4/0x240
[c0000002b35ff480] c00000000066f8a4 put_device+0x34/0x50
[c0000002b35ff4b0] c000000000700550 scsi_target_dev_release+0x40/0x60
[c0000002b35ff4e0] c00000000066f210 device_release+0x60/0xf0
[c0000002b35ff560] c000000000532a44 kobject_cleanup+0xd4/0x240
[c0000002b35ff5e0] c00000000066f8a4 put_device+0x34/0x50
[c0000002b35ff610] c000000000704e68
scsi_device_dev_release_usercontext+0x178/0x1b0
[c0000002b35ff670] c0000000000d69d4 execute_in_process_context+0xa4/0xd0
[c0000002b35ff6a0] c000000000704cd4 scsi_device_dev_release+0x34/0x50
[c0000002b35ff6d0] c00000000066f210 device_release+0x60/0xf0
[c0000002b35ff750] c000000000532a44 kobject_cleanup+0xd4/0x240
[c0000002b35ff7d0] c00000000066f8a4 put_device+0x34/0x50
[c0000002b35ff800] c0000000006f1a60 scsi_device_put+0x40/0x60
[c0000002b35ff830] c000000000716568 scsi_disk_put+0x58/0x90
[c0000002b35ff870] c000000000311398 __blkdev_put+0x278/0x2e0
[c0000002b35ff8f0] c0000000008861bc dm_put_table_device+0xcc/0x140
[c0000002b35ff930] c00000000088b12c dm_put_device+0x9c/0x130
[c0000002b35ff9b0] d000000005f31864 free_priority_group+0xe4/0x140
[dm_multipath]
[c0000002b35ffa10] d000000005f31944 free_multipath+0x84/0xf0 [dm_multipath]
[c0000002b35ffa60] c00000000088c310 dm_table_destroy+0xb0/0x1a0
[c0000002b35ffaf0] c000000000891b9c dev_suspend+0x14c/0x330
[c0000002b35ffb30] c000000000892a8c ctl_ioctl+0x1cc/0x380
[c0000002b35ffd10] c000000000892c78 dm_ctl_ioctl+0x38/0x50
[c0000002b35ffd40] c0000000002d7380 do_vfs_ioctl+0x4f0/0x7c0
[c0000002b35ffde0] c0000000002d7724 SyS_ioctl+0xd4/0xf0
[c0000002b35ffe30] c000000000009204 system_call+0x38/0xb4
--- Exception: c01 (System Call) at 00003fff88031480
SP (3fff87addb20) is in userspace
42:mon> r
R00 = c000000000047a78 R16 = 00003fff8824eea8
R01 = c0000002b35ff050 R17 = 00003fff8824eea8
R02 = c0000000014fdf00 R18 = 00003fff8824eea8
R03 = c00000028118b000 R19 = 00003fff8824eea8
R04 = 0000000000000001 R20 = 00003fff880f043c
R05 = c0000002d2052cc0 R21 = c000000001460d90
R06 = c00000000003ad24 R22 = 0000000000000000
R07 = 0000000080000000 R23 = 0000000000000001
R08 = 0000000000000337 R24 = 0000000000000083
R09 = 2f30613a35303030 R25 = c0000002a2d60800
R10 = 0000000000000000 R26 = c00000028c268c28
R11 = c0000002f3b6d300 R27 = 0000000000100100
R12 = 2f30613a35303030 R28 = c0000000014700c0
R13 = c000000007b07300 R29 = c0000002a2f6ba00
R14 = 00003fff8824eea8 R30 = c0000002fe05dc00
R15 = 00003fff8824eea8 R31 = c00000028118b000
pc = 2f30613a35303030
cfar= c000000000008468 slb_miss_realmode+0x50/0x78
lr = c000000000047a9c pcibios_release_device+0x5c/0x80
msr = 8000000140009033 cr = 28008484
ctr = 2f30613a35303030 xer = 0000000000000000 trap = 400
42:mon>
Hi Canonical,
Can you please include this patch for 16.04.x and 14.04.x?
It's a very contained fix -- impacts only powerpc, pseries DLPAR
(hotplug remove) of PHBs -- and it fixes a crash.
It's present in this pull request from Ben H. to Linus for linux 4.8
[1], and the commit is here [2].
Thanks!
Links:
[1] https://lkml.org/lkml/2016/8/29/7
"[GIT PULL] Please pull powerpc/linux.git powerpc-4.8-4 tag"
[2]
https://git.kernel.org/cgit/linux/kernel/git/powerpc/linux.git/commit/arch/powerpc/kernel?h=powerpc-4.8-4&id=2dd9c11b9d4dfbd6c070eab7b81197f65e82f1a0
"powerpc/pseries: use pci_host_bridge.release_fn() to kfree(phb)"
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