Tyrel Datwyler b36522150e scsi: ibmvscsi: Fix WARN_ON during event pool release ... While removing an ibmvscsi client adapter a WARN_ON like the following is seen in the kernel log: drmgr: drmgr: -r -c slot -s U9080.M9S.783AEC8-V11-C11 -w 5 -d 1 WARNING: CPU: 9 PID: 24062 at ../kernel/dma/mapping.c:311 dma_free_attrs+0x78/0x110 Supported: No, Unreleased kernel CPU: 9 PID: 24062 Comm: drmgr Kdump: loaded Tainted: G X 5.3.18-12-default NIP: c0000000001fa758 LR: c0000000001fa744 CTR: c0000000001fa6e0 REGS: c0000002173375d0 TRAP: 0700 Tainted: G X (5.3.18-12-default) MSR: 8000000000029033 <SF,EE,ME,IR,DR,RI,LE> CR: 28088282 XER: 20000000 CFAR: c0000000001fbf0c IRQMASK: 1 GPR00: c0000000001fa744 c000000217337860 c00000000161ab00 0000000000000000 GPR04: 0000000000000000 c000011e12250000 0000000018010000 0000000000000000 GPR08: 0000000000000000 0000000000000001 0000000000000001 c0080000190f4fa8 GPR12: c0000000001fa6e0 c000000007fc2a00 0000000000000000 0000000000000000 GPR16: 0000000000000000 0000000000000000 0000000000000000 0000000000000000 GPR20: 0000000000000000 0000000000000000 0000000000000000 0000000000000000 GPR24: 000000011420e310 0000000000000000 0000000000000000 0000000018010000 GPR28: c00000000159de50 c000011e12250000 0000000000006600 c000011e5c994848 NIP [c0000000001fa758] dma_free_attrs+0x78/0x110 LR [c0000000001fa744] dma_free_attrs+0x64/0x110 Call Trace: [c000000217337860] [000000011420e310] 0x11420e310 (unreliable) [c0000002173378b0] [c0080000190f0280] release_event_pool+0xd8/0x120 [ibmvscsi] [c000000217337930] [c0080000190f3f74] ibmvscsi_remove+0x6c/0x160 [ibmvscsi] [c000000217337960] [c0000000000f3cac] vio_bus_remove+0x5c/0x100 [c0000002173379a0] [c00000000087a0a4] device_release_driver_internal+0x154/0x280 [c0000002173379e0] [c0000000008777cc] bus_remove_device+0x11c/0x220 [c000000217337a60] [c000000000870fc4] device_del+0x1c4/0x470 [c000000217337b10] [c0000000008712a0] device_unregister+0x30/0xa0 [c000000217337b80] [c0000000000f39ec] vio_unregister_device+0x2c/0x60 [c000000217337bb0] [c00800001a1d0964] dlpar_remove_slot+0x14c/0x250 [rpadlpar_io] [c000000217337c50] [c00800001a1d0bcc] remove_slot_store+0xa4/0x110 [rpadlpar_io] [c000000217337cd0] [c000000000c091a0] kobj_attr_store+0x30/0x50 [c000000217337cf0] [c00000000057c934] sysfs_kf_write+0x64/0x90 [c000000217337d10] [c00000000057be10] kernfs_fop_write+0x1b0/0x290 [c000000217337d60] [c000000000488c4c] __vfs_write+0x3c/0x70 [c000000217337d80] [c00000000048c648] vfs_write+0xd8/0x260 [c000000217337dd0] [c00000000048ca8c] ksys_write+0xdc/0x130 [c000000217337e20] [c00000000000b488] system_call+0x5c/0x70 Instruction dump: 7c840074 f8010010 f821ffb1 20840040 eb830218 7c8407b4 48002019 60000000 2fa30000 409e003c 892d0988 792907e0 <0b090000> 2fbd0000 419e0028 2fbc0000 ---[ end trace 5955b3c0cc079942 ]--- rpadlpar_io: slot U9080.M9S.783AEC8-V11-C11 removed This is tripped as a result of irqs being disabled during the call to dma_free_coherent() by release_event_pool(). At this point in the code path we have quiesced the adapter and it is overly paranoid to be holding the host lock. [mkp: fixed build warning reported by sfr] Link: https://lore.kernel.org/r/1588027793-17952-1-git-send-email-tyreld@linux.ibm.com Signed-off-by: Tyrel Datwyler <tyreld@linux.ibm.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>		2020-04-28 22:59:55 -04:00
..
aacraid	SCSI misc on 20200410	2020-04-10 12:21:11 -07:00
aic7xxx	SCSI misc on 20200410	2020-04-10 12:21:11 -07:00
aic94xx
arcmsr	SCSI misc on 20200402	2020-04-02 17:03:53 -07:00
arm
be2iscsi
bfa
bnx2fc	scsi: bnx2fc: fix boolreturn.cocci warnings	2020-03-31 22:35:02 -04:00
bnx2i
csiostor
cxgbi
cxlflash
device_handler
dpt
esas2r
fcoe
fnic
hisi_sas	scsi: hisi_sas: Fix build error without SATA_HOST	2020-04-13 13:28:13 -04:00
ibmvscsi	scsi: ibmvscsi: Fix WARN_ON during event pool release	2020-04-28 22:59:55 -04:00
ibmvscsi_tgt
isci	SCSI misc on 20200402	2020-04-02 17:03:53 -07:00
libfc	SCSI misc on 20200410	2020-04-10 12:21:11 -07:00
libsas
lpfc	SCSI misc on 20200410	2020-04-10 12:21:11 -07:00
megaraid	SCSI misc on 20200402	2020-04-02 17:03:53 -07:00
mpt3sas	scsi: mpt3sas: Fix kernel panic observed on soft HBA unplug	2020-03-31 22:02:37 -04:00
mvsas
pcmcia
pm8001
qedf
qedi
qla2xxx	scsi: qla2xxx: Delete all sessions before unregister local nvme port	2020-04-24 12:17:06 -04:00
qla4xxx
smartpqi
snic
sym53c8xx_2
ufs	SCSI misc on 20200410	2020-04-10 12:21:11 -07:00
.gitignore
3w-9xxx.c
3w-9xxx.h
3w-sas.c
3w-sas.h
3w-xxxx.c
3w-xxxx.h
53c700_d.h_shipped
53c700.c
53c700.h
53c700.scr
a100u2w.c
a100u2w.h
a2091.c
a2091.h
a3000.c
a3000.h
a4000t.c
advansys.c
aha152x.c
aha152x.h
aha1542.c
aha1542.h
aha1740.c
aha1740.h
am53c974.c
atari_scsi.c
atp870u.c
atp870u.h
BusLogic.c	SCSI misc on 20200402	2020-04-02 17:03:53 -07:00
BusLogic.h
bvme6000_scsi.c
ch.c
constants.c	scsi: core: Add DID_ALLOC_FAILURE and DID_MEDIUM_ERROR to hostbyte_table	2020-04-01 22:03:04 -04:00
dc395x.c
dc395x.h
dmx3191d.c
dpt_i2o.c
dpti.h
esp_scsi.c
esp_scsi.h
fdomain_isa.c
fdomain_pci.c
fdomain.c
fdomain.h
FlashPoint.c
g_NCR5380.c
gdth_ioctl.h
gdth_proc.c
gdth_proc.h
gdth.c
gdth.h
gvp11.c
gvp11.h
hosts.c
hpsa_cmd.h
hpsa.c
hpsa.h
hptiop.c
hptiop.h
imm.c
imm.h
initio.c
initio.h
ipr.c	SCSI misc on 20200402	2020-04-02 17:03:53 -07:00
ipr.h	SCSI misc on 20200402	2020-04-02 17:03:53 -07:00
ips.c
ips.h
iscsi_boot_sysfs.c
iscsi_tcp.c
iscsi_tcp.h
jazz_esp.c
Kconfig	scsi: Update referenced link to cdrtools	2020-04-14 21:16:16 -04:00
lasi700.c
libiscsi_tcp.c
libiscsi.c
mac53c94.c
mac53c94.h
mac_esp.c
mac_scsi.c
Makefile
megaraid.c
megaraid.h
mesh.c
mesh.h
mvme16x_scsi.c
mvme147.c
mvme147.h
mvumi.c
mvumi.h
myrb.c
myrb.h
myrs.c
myrs.h
ncr53c8xx.c
ncr53c8xx.h
NCR5380.c
NCR5380.h
nsp32_debug.c
nsp32_io.h
nsp32.c
nsp32.h
pmcraid.c
pmcraid.h
ppa.c
ppa.h
ps3rom.c
qla1280.c
qla1280.h
qlogicfas408.c
qlogicfas408.h
qlogicfas.c
qlogicpti.c
qlogicpti.h
raid_class.c
script_asm.pl
scsi_common.c
scsi_debug.c
scsi_debugfs.c
scsi_debugfs.h
scsi_devinfo.c
scsi_dh.c
scsi_error.c
scsi_ioctl.c
scsi_lib_dma.c
scsi_lib.c	scsi: core: Allow the state change from SDEV_QUIESCE to SDEV_BLOCK	2020-04-21 23:44:26 -04:00
scsi_logging.c
scsi_logging.h
scsi_netlink.c
scsi_pm.c
scsi_priv.h
scsi_proc.c
scsi_sas_internal.h
scsi_scan.c
scsi_sysctl.c
scsi_sysfs.c
scsi_trace.c
scsi_transport_api.h
scsi_transport_fc.c
scsi_transport_iscsi.c	scsi: iscsi: Report unbind session event when the target has been removed	2020-03-31 21:39:58 -04:00
scsi_transport_sas.c
scsi_transport_spi.c
scsi_transport_srp.c
scsi.c
scsi.h
scsicam.c
sd_dif.c
sd_zbc.c
sd.c
sd.h
sense_codes.h
ses.c
sg.c	scsi: sg: add sg_remove_request in sg_write	2020-04-14 21:15:53 -04:00
sgiwd93.c
sim710.c
sni_53c710.c
sr_ioctl.c
sr_vendor.c
sr.c	SCSI misc on 20200410	2020-04-10 12:21:11 -07:00
sr.h
st_options.h
st.c
st.h
stex.c
storvsc_drv.c
sun3_scsi_vme.c
sun3_scsi.c
sun3x_esp.c
sun_esp.c
virtio_scsi.c
vmw_pvscsi.c
vmw_pvscsi.h
wd33c93.c
wd33c93.h
wd719x.c
wd719x.h
xen-scsifront.c
zalon.c
zorro7xx.c
zorro_esp.c