AuxXxilium/linux_dsm_epyc7002
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linux_dsm_epyc7002/drivers/s390/block
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Stefan Haberland 08bccd7212 s390/dasd: fix hanging IO request during DASD driver unbind 
commit 66f669a272898feb1c69b770e1504aa2ec7723d1 upstream.

Prevent that an IO request is build during device shutdown initiated by
a driver unbind. This request will never be able to be processed or
canceled and will hang forever. This will lead also to a hanging unbind.

Fix by checking not only if the device is in READY state but also check
that there is no device offline initiated before building a new IO request.

Fixes: e443343e50 ("s390/dasd: blk-mq conversion")

Cc: <stable@vger.kernel.org> # v4.14+
Signed-off-by: Stefan Haberland <sth@linux.ibm.com>
Tested-by: Bjoern Walk <bwalk@linux.ibm.com>
Reviewed-by: Jan Hoeppner <hoeppner@linux.ibm.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-03-17 17:06:28 +01:00
..
dasd_3990_erp.c s390/dasd: Fix comment spelling 2020-03-17 20:50:19 +01:00
dasd_alias.c s390/dasd: fix list corruption of lcu list 2020-12-30 11:54:09 +01:00
dasd_devmap.c s390/dasd: Recognise data for ESE volumes 2019-07-11 20:39:53 +02:00
dasd_diag.c s390/dasd: Use struct_size() helper 2020-07-15 08:47:11 -06:00
dasd_diag.h
dasd_eckd.c s390/dasd: fix data corruption for thin provisioned devices 2020-03-12 07:24:52 -06:00
dasd_eckd.h s390: Replace zero-length array with flexible-array member 2020-02-27 16:02:21 +01:00
dasd_eer.c s390/dasd: Handle out-of-space constraint 2019-07-11 20:39:54 +02:00
dasd_erp.c
dasd_fba.c s390/dasd: Fix zero write for FBA devices 2020-09-14 19:40:21 -06:00
dasd_fba.h s390/dasd: fix typo in copyright statement 2019-12-20 11:52:01 -07:00
dasd_genhd.c dasd: cleanup dasd_scan_partitions 2020-09-23 10:43:19 -06:00
dasd_int.h s390/dasd: fix data corruption for thin provisioned devices 2020-03-12 07:24:52 -06:00
dasd_ioctl.c block: add a bdev_is_partition helper 2020-09-25 08:18:57 -06:00
dasd_proc.c proc: convert everything to "struct proc_ops" 2020-02-04 03:05:26 +00:00
dasd.c s390/dasd: fix hanging IO request during DASD driver unbind 2021-03-17 17:06:28 +01:00
dcssblk.c dcssblk: don't set bd_block_size in ->open 2020-07-01 08:08:15 -06:00
Kconfig s390/dasd: remove IOSCHED_DEADLINE from DASD Kconfig 2020-04-17 08:05:27 -06:00
Makefile
scm_blk.c blk-mq: move failure injection out of blk_mq_complete_request 2020-06-24 09:15:57 -06:00
scm_blk.h
scm_drv.c
xpram.c block: move ->make_request_fn to struct block_device_operations 2020-07-01 07:27:24 -06:00