RHEL Engineering is moving the tracking of its product development work on RHEL 6 through RHEL 9 to Red Hat Jira (issues.redhat.com). If you're a Red Hat customer, please continue to file support cases via the Red Hat customer portal. If you're not, please head to the "RHEL project" in Red Hat Jira and file new tickets here. Individual Bugzilla bugs in the statuses "NEW", "ASSIGNED", and "POST" are being migrated throughout September 2023. Bugs of Red Hat partners with an assigned Engineering Partner Manager (EPM) are migrated in late September as per pre-agreed dates. Bugs against components "kernel", "kernel-rt", and "kpatch" are only migrated if still in "NEW" or "ASSIGNED". If you cannot log in to RH Jira, please consult article #7032570. That failing, please send an e-mail to the RH Jira admins at rh-issues@redhat.com to troubleshoot your issue as a user management inquiry. The email creates a ServiceNow ticket with Red Hat. Individual Bugzilla bugs that are migrated will be moved to status "CLOSED", resolution "MIGRATED", and set with "MigratedToJIRA" in "Keywords". The link to the successor Jira issue will be found under "Links", have a little "two-footprint" icon next to it, and direct you to the "RHEL project" in Red Hat Jira (issue links are of type "https://issues.redhat.com/browse/RHEL-XXXX", where "X" is a digit). This same link will be available in a blue banner at the top of the page informing you that that bug has been migrated.

Description of problem:
DM is improperly processing of duplicate abnormal bios, such as discards, write zeros and secure erase. This can cause dm-stripe and dm-snap to send IO to the wrong disk or wrong part of a disk, potentially causing data corruption

Version-Release number of selected component (if applicable):
kernel-5.14.0-124.el9

How reproducible:
Always

Steps to Reproduce:
1. # vgcreate vg <dev1> <dev2> <dev3> <dev4>
2. # lvcreate -l 100%VG  --stripes 2 vg -n lv
3. # blkdiscard /dev/vg/lv

Actual results:
blkdiscard: /dev/vg/lv: BLKDISCARD ioctl failed: Input/output error

[  875.631996] blkdiscard: attempt to access beyond end of device
[  875.631996] loop0: rw=2051, sector=2048, nr_sectors = 147456 limit=81920
[  875.632009] blkdiscard: attempt to access beyond end of device
[  875.632009] loop1: rw=2051, sector=2048, nr_sectors = 147456 limit=81920

Expected results:
No error

Additional info:

The fix for this issue is in the following linux-dm commits:

f7b58a69fad9 dm: fix improper splitting for abnormal bios
666eed46769d dm: fix __send_duplicate_bios() to always allow for splitting IO

The upstream kernel bug for this issue is here:
https://bugzilla.kernel.org/show_bug.cgi?id=217273

Created attachment 1954924 [details]
reproducer script

Moving zstream request to rhel-8.2 version of this bug, bz 2184420.

Verified with kernel-5.14.0-304.el9.

Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory (Important: kernel security, bug fix, and enhancement update), and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://access.redhat.com/errata/RHSA-2023:6583