Comment 4 for bug 2002842

I got this bug today in Ubuntu 22.04

root@ceph1:~# uname -a
Linux ceph1 5.15.0-58-generic #64-Ubuntu SMP Thu Jan 5 11:43:13 UTC 2023 x86_64 x86_64 x86_64 GNU/Linux
root@ceph1:~# cat /etc/lsb-release
DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=22.04
DISTRIB_CODENAME=jammy
DISTRIB_DESCRIPTION="Ubuntu 22.04.1 LTS"

[ 17.317308] ================================================================================
[ 17.317310] UBSAN: array-index-out-of-bounds in /build/linux-oKJrrr/linux-5.15.0/drivers/scsi/megaraid/megaraid_sas_fp.c:103:32
[ 17.317312] index 1 is out of range for type 'MR_LD_SPAN_MAP [1]'
[ 17.317314] CPU: 16 PID: 116 Comm: kworker/16:0H Not tainted 5.15.0-58-generic #64-Ubuntu
[ 17.317317] Hardware name: Dell Inc. PowerEdge R620/0VV3F2, BIOS 2.9.0 12/06/2019
[ 17.317319] Workqueue: kblockd blk_mq_run_work_fn
[ 17.317326] Call Trace:
[ 17.317329] <TASK>
[ 17.317332] show_stack+0x52/0x5c
[ 17.317337] dump_stack_lvl+0x4a/0x63
[ 17.317343] dump_stack+0x10/0x16
[ 17.317345] ubsan_epilogue+0x9/0x49
[ 17.317357] __ubsan_handle_out_of_bounds.cold+0x44/0x49
[ 17.317361] MR_BuildRaidContext+0xa5e/0xb50 [megaraid_sas]
[ 17.317375] megasas_build_ldio_fusion+0x5b9/0x9a0 [megaraid_sas]
[ 17.317384] megasas_build_io_fusion+0x412/0x450 [megaraid_sas]
[ 17.317391] megasas_build_and_issue_cmd_fusion+0xa5/0x380 [megaraid_sas]
[ 17.317398] megasas_queue_command+0x1c1/0x200 [megaraid_sas]
[ 17.317405] ? ktime_get+0x46/0xc0
[ 17.317409] scsi_dispatch_cmd+0x96/0x200
[ 17.317412] scsi_queue_rq+0x2d5/0x690
[ 17.317415] blk_mq_dispatch_rq_list+0x13f/0x680
[ 17.317418] ? sbitmap_get+0x1/0xe0
[ 17.317422] __blk_mq_do_dispatch_sched+0xba/0x2e0
[ 17.317424] blk_mq_do_dispatch_sched+0x40/0x70
[ 17.317426] __blk_mq_sched_dispatch_requests+0x105/0x150
[ 17.317428] blk_mq_sched_dispatch_requests+0x35/0x70
[ 17.317429] __blk_mq_run_hw_queue+0x34/0xc0
[ 17.317432] blk_mq_run_work_fn+0x1f/0x30
[ 17.317434] process_one_work+0x22b/0x3d0
[ 17.317436] worker_thread+0x53/0x420
[ 17.317438] ? process_one_work+0x3d0/0x3d0
[ 17.317439] kthread+0x12a/0x150
[ 17.317441] ? set_kthread_struct+0x50/0x50
[ 17.317444] ret_from_fork+0x22/0x30
[ 17.317448] </TASK>
[ 17.317449] ================================================================================
[ 17.317450] ================================================================================