[Bug 2148534] Re: [Ubuntu 26.04] Failed install OS onto JBOD disk on B540d-2HS M.2 controller

this commit exists in the following ubuntu kernel tags. $ g tag --contains 9b8b84879d4ad Ubuntu-6.17.0-2.2 .... Ubuntu-7.0.0-10.10 Ubuntu-7.0.0-11.11 Ubuntu-7.0.0-12.12 Ubuntu-7.0.0-13.13 Ubuntu-7.0.0-14.14 Ubuntu-7.0.0-15.15 Ubuntu-7.0.0-16.16 Ubuntu-7.0.0-17.17 Ubuntu-7.0.0-18.18 -- You received this bug notification because you are subscribed to linux in Ubuntu. Matching subscriptions: Bgg, Bmail, Nb https://bugs.launchpad.net/bugs/2148534 Title: [Ubuntu 26.04] Failed install OS onto JBOD disk on B540d-2HS M.2 controller Status in linux package in Ubuntu: Confirmed Status in linux source package in Resolute: Confirmed Bug description: The system hangs during storage initialization when using a B540 RAID Kit with a single Micron 7450 Pro NVMe SSD configured in JBOD mode. Environment: Hardware: Lenovo ThinkSystem SR650 V4 Controller: B540d-2HS M.2 controller Disk: ThinkSystem M.2 7450 PRO 960GB Read Intensive NVMe PCIe 4.0 x4 NHS SSD Kernel (broken): 7.0.0-13-generic (Ubuntu) Kernel (working): 6.8.x (Ubuntu 24.04 LTS) Reproduce steps: 1. Set the B540 RAID controller to allow JBOD or configure the Micron 7450P as a JBOD drive. 2. Start Ubuntu 26.04 installation. 3. The installer/kernel attempts to scan scsi0. 4. The driver hangs at "waiting for commands" and eventually triggers a firmware reset loop. The megaraid_sas driver reports multiple command timeouts followed by a controller firmware crash. Even though the logs show Secure JBOD support-: Yes and NVMe passthru support-: Yes, It seems like kernel oops in megasas_make_prp_nvme due to a page fault on an unmapped virtual address while building the NVMe, which can be refered in logs below with Call Trace. [ 271.793726] #PF: supervisor write access in kernel mode [ 271.794694] #PF: error_code(0x0002) - not-present page [ 271.795648] PGD 100000067 P4D 101b42067 PUD 101b43067 PMD 10219a067 PTE 0 [ 271.796887] Oops: Oops: 0002 [#1] SMP NOPTI [ 271.797675] CPU: 1 UID: 0 PID: 1905 Comm: kworker/u1025:3 Tainted: P S O 7.0.0-13-generic #13-Ubuntu PREEMPT(lazy) [ 271.799778] Tainted: [P]=PROPRIETARY_MODULE, [S]=CPU_OUT_OF_SPEC, [O]=OOT_MODULE [ 271.801123] Hardware name: Lenovo ThinkSystem SR650 V4/SB27B70076, BIOS IHE111A-1.21 03/28/2025 [ 271.801140] sd 0:0:2:0: [sda] tag#244 page boundary ptr_sgl: 0x0000000040507511 [ 271.802682] Workqueue: writeback wb_workfn [ 271.802733] sd 0:0:2:0: [sda] tag#245 page boundary ptr_sgl: 0x000000004c4d3310 [ 271.806138] (flush-8:0) [ 271.806643] RIP: 0010:megasas_make_prp_nvme.isra.0+0x12f/0x220 [megaraid_sas] [ 271.807955] Code: 20 49 83 c7 20 48 89 d1 48 83 e1 fc 83 e2 01 4c 0f 45 f9 49 8b 5f 10 45 8b 67 18 4c 89 e9 4c 8d 69 08 45 85 eb 74 52 45 29 ce <48> 89 19 83 c0 01 45 85 f6 7f af 4c 8b 7d c8 c1 e0 03 b9 01 00 00 [ 271.811246] RSP: 0018:ff50bfb988f8b298 EFLAGS: 00010206 [ 271.812215] RAX: 0000000000000200 RBX: 00000000f6a00000 RCX: ff50bfb983b9a000 [ 271.813520] RDX: ff50bfb983b9a008 RSI: 0000000000000000 RDI: 0000000000000000 [ 271.814822] RBP: ff50bfb988f8b2f8 R08: 00000000ffbb0000 R09: 0000000000001000 [ 271.816365] R10: 0000000000001000 R11: 0000000000000fff R12: 0000000000200000 [ 271.817860] R13: ff50bfb983b9a008 R14: 00000000001ff000 R15: ff2b1ee1e1f2cb08 [ 271.819321] FS: 0000000000000000(0000) GS:ff2b1ee542880000(0000) knlGS:0000000000000000 [ 271.820923] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 271.822134] CR2: ff50bfb983b9a000 CR3: 0000060144844004 CR4: 0000000000f73ef0 [ 271.823587] PKRU: 55555554 [ 271.824274] Call Trace: [ 271.824920] <TASK> [ 271.825514] megasas_build_io_fusion+0x2e2/0x330 [megaraid_sas] [ 271.826772] megasas_build_and_issue_cmd_fusion+0xa3/0x280 [megaraid_sas] [ 271.828168] ? sd_init_command+0x138/0x4a0 [ 271.829110] megasas_queue_command+0x11b/0x200 [megaraid_sas] [ 271.830347] ? scsi_init_command+0x74/0xc0 [ 271.831291] ? __rq_qos_issue+0x29/0x50 [ 271.832199] scsi_dispatch_cmd+0x95/0x290 [ 271.833129] scsi_queue_rq+0x62e/0x8e0 [ 271.834017] blk_mq_dispatch_rq_list+0x131/0x510 [ 271.835064] __blk_mq_do_dispatch_sched+0x2d9/0x360 [ 271.836154] ? mod_memcg_lruvec_state+0x101/0x2f0 [ 271.837206] __blk_mq_sched_dispatch_requests+0x157/0x1a0 [ 271.838369] ? elv_rb_add+0x70/0x90 [ 271.839210] blk_mq_sched_dispatch_requests+0x2d/0x80 [ 271.840316] blk_mq_run_hw_queue+0x2c0/0x330 [ 271.841295] blk_mq_dispatch_list+0x159/0x350 [ 271.842319] blk_mq_flush_plug_list+0x59/0x1e0 [ 271.843328] blk_add_rq_to_plug+0xe7/0x220 [ 271.844262] ? blk_account_io_start+0xd2/0x210 [ 271.845258] blk_mq_submit_bio+0x677/0x920 [ 271.846182] __submit_bio+0xad/0x250 [ 271.847022] submit_bio_noacct_nocheck+0x102/0x1d0 [ 271.848068] submit_bio_noacct+0x131/0x430 [ 271.848982] submit_bio+0xb3/0x110 [ 271.849782] ext4_io_submit+0x40/0x70 [ 271.850624] ext4_do_writepages+0x60a/0x970 [ 271.851546] ? psi_group_change+0x195/0x460 [ 271.852466] ext4_writepages+0xc8/0x1b0 [ 271.853325] ? ext4_writepages+0xc8/0x1b0 [ 271.854209] do_writepages+0xcb/0x180 [ 271.855038] ? write_inode+0x78/0x150 [ 271.855863] __writeback_single_inode+0x45/0x270 [ 271.856852] ? wbc_detach_inode+0x115/0x2c0 [ 271.857756] writeback_sb_inodes+0x25e/0x5e0 [ 271.858685] __writeback_inodes_wb+0x54/0x100 [ 271.859621] ? queue_io+0x13b/0x150 [ 271.860416] wb_writeback+0x2e0/0x370 [ 271.861223] wb_workfn+0x39e/0x470 [ 271.861987] process_one_work+0x1ac/0x3d0 [ 271.862851] worker_thread+0x1b8/0x360 [ 271.863671] ? __pfx_worker_thread+0x10/0x10 [ 271.864586] kthread+0xf7/0x130 [ 271.865304] ? __pfx_kthread+0x10/0x10 [ 271.866118] ret_from_fork+0x195/0x2a0 [ 271.866934] ? __pfx_kthread+0x10/0x10 [ 271.867743] ? __pfx_kthread+0x10/0x10 [ 271.868551] ret_from_fork_asm+0x1a/0x30 [ 271.869394] </TASK> To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2148534/+subscriptions