Reference in a new issue

Blame

Copy permalink

Reference in a new issue

Copy permalink

Jan Höppner 36482bf16f s390/dasd: Use correct lock while counting channel queue length ... commit ccc45cb4e7 upstream. The lock around counting the channel queue length in the BIODASDINFO ioctl was incorrectly changed to the dasd_block->queue_lock with commit 583d6535cb ("dasd: remove dead code"). This can lead to endless list iterations and a subsequent crash. The queue_lock is supposed to be used only for queue lists belonging to dasd_block. For dasd_device related queue lists the ccwdev lock must be used. Fix the mentioned issues by correctly using the ccwdev lock instead of the queue lock. Fixes: 583d6535cb ("dasd: remove dead code") Cc: stable@vger.kernel.org # v5.0+ Signed-off-by: Jan Höppner <hoeppner@linux.ibm.com> Reviewed-by: Stefan Haberland <sth@linux.ibm.com> Signed-off-by: Stefan Haberland <sth@linux.ibm.com> Link: https://lore.kernel.org/r/20230609153750.1258763-2-sth@linux.ibm.com Signed-off-by: Jens Axboe <axboe@kernel.dk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		History 2023-06-14 11:13:06 +02:00
..
block	s390/dasd: Use correct lock while counting channel queue length	2023-06-14 11:13:06 +02:00
char	s390/zcore: fix race when reading from hardware system area	2022-08-17 14:24:10 +02:00
cio	s390/qdio: fix do_sqbs() inline assembly constraint	2023-05-24 17:36:55 +01:00
crypto	s390/pkey: zeroize key blobs	2023-06-09 10:32:24 +02:00
net	s390/lcs: Fix return type of lcs_start_xmit()	2022-12-31 13:14:41 +01:00
scsi	scsi: zfcp: Fix double free of FSF request when qdio send fails	2022-11-26 09:24:47 +01:00
virtio	virtio/s390: get rid of open-coded kvm hypercall	2021-06-28 11:18:28 +02:00
Makefile	s390: remove pointless drivers-y in drivers/s390/Makefile	2019-09-16 13:21:51 +02:00