Hello, the following kernel panic was triggered by 'ubdsrv make test T=generic' tests, please help check and let me know if you need any info/test, thanks. repo: https://github.com/torvalds/linux.git branch: master INFO: HEAD of cloned kernel: commit d0b3b7b22dfa1f4b515fd3a295b3fd958f9e81af Author: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx> Date: Sun Jun 29 13:09:04 2025 -0700 Linux 6.16-rc4 dmesg log: [ 3431.347957] BUG: kernel NULL pointer dereference, address: 0000000000000060 [ 3431.355744] #PF: supervisor read access in kernel mode [ 3431.361484] #PF: error_code(0x0000) - not-present page [ 3431.367224] PGD 119ffa067 P4D 0 [ 3431.370830] Oops: Oops: 0000 [#1] SMP NOPTI [ 3431.375503] CPU: 22 UID: 0 PID: 397273 Comm: fio Tainted: G S 6.16.0-rc4 #1 PREEMPT(voluntary) [ 3431.386864] Tainted: [S]=CPU_OUT_OF_SPEC [ 3431.391243] Hardware name: Lenovo ThinkSystem SR650 V2/7Z73CTO1WW, BIOS AFE118M-1.32 06/29/2022 [ 3431.400954] RIP: 0010:ublk_queue_rqs+0x7d/0x1c0 [ublk_drv] [ 3431.407085] Code: 00 00 4c 8b b8 c8 00 00 00 48 63 43 20 48 c1 e0 05 4d 8d 6c 07 30 48 85 d2 0f 84 c1 00 00 00 4c 01 f8 48 8b 7a 10 48 8b 70 40 <48> 8b 4e 60 48 39 4f 60 0f 84 9a 00 00 00 4d 85 e4 0f 84 9f 00 00 [ 3431.428035] RSP: 0018:ff711b900c5379d8 EFLAGS: 00010282 [ 3431.433869] RAX: ff300f05d5c534b0 RBX: ff300f05ea3b2940 RCX: ff300f05d5c53090 [ 3431.441834] RDX: ff300f05d5c534c0 RSI: 0000000000000000 RDI: 0000000000000000 [ 3431.449799] RBP: ff300f05ea3b2800 R08: 0000000000000000 R09: 0000000000000028 [ 3431.457766] R10: ff711b900c537a60 R11: ff300f062256ec20 R12: 0000000000000000 [ 3431.465723] R13: ff300f05d5c534e0 R14: ff711b900c537af0 R15: ff300f05d5c53090 [ 3431.473687] FS: 00007fddab6cd080(0000) GS:ff300f08df445000(0000) knlGS:0000000000000000 [ 3431.482720] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 3431.489137] CR2: 0000000000000060 CR3: 0000000122ff0001 CR4: 0000000000773ef0 [ 3431.497095] PKRU: 55555554 [ 3431.500108] Call Trace: [ 3431.502829] <TASK> [ 3431.505172] blk_mq_dispatch_queue_requests+0x15a/0x190 [ 3431.511011] blk_mq_flush_plug_list+0x78/0x190 [ 3431.515971] ? io_submit_one+0xee/0x370 [ 3431.520257] __blk_flush_plug+0xf2/0x150 [ 3431.524639] blk_finish_plug+0x28/0x40 [ 3431.528826] __x64_sys_io_submit+0xd5/0x1e0 [ 3431.533500] do_syscall_64+0x7f/0x980 [ 3431.537591] ? blk_mq_start_request+0x48/0x190 [ 3431.542554] ? __io_req_task_work_add+0x35/0x1f0 [ 3431.547711] ? ublk_queue_rqs+0x103/0x1c0 [ublk_drv] [ 3431.553255] ? blk_mq_dispatch_queue_requests+0x162/0x190 [ 3431.559283] ? blk_mq_flush_plug_list+0x78/0x190 [ 3431.564435] ? io_submit_one+0xee/0x370 [ 3431.568717] ? __blk_flush_plug+0xf2/0x150 [ 3431.573292] ? rseq_get_rseq_cs.isra.0+0x16/0x210 [ 3431.578546] ? rseq_ip_fixup+0x90/0x1d0 [ 3431.582820] ? __rseq_handle_notify_resume+0x35/0x60 [ 3431.588363] ? arch_exit_to_user_mode_prepare.isra.0+0x82/0xb0 [ 3431.594877] ? do_syscall_64+0xb1/0x980 [ 3431.599160] ? blk_mq_dispatch_queue_requests+0x162/0x190 [ 3431.605189] ? blk_mq_flush_plug_list+0x78/0x190 [ 3431.610344] ? io_submit_one+0xee/0x370 [ 3431.614625] ? __blk_flush_plug+0xf2/0x150 [ 3431.619201] ? blk_finish_plug+0x28/0x40 [ 3431.623581] ? __x64_sys_io_submit+0x104/0x1e0 [ 3431.628542] ? syscall_exit_work+0x108/0x140 [ 3431.633302] ? clear_bhb_loop+0x50/0xa0 [ 3431.637585] ? clear_bhb_loop+0x50/0xa0 [ 3431.641860] entry_SYSCALL_64_after_hwframe+0x76/0x7e [ 3431.647499] RIP: 0033:0x7fddab7d1a3d [ 3431.651490] Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d a3 b3 0c 00 f7 d8 64 89 01 48 [ 3431.672448] RSP: 002b:00007ffd378a7a08 EFLAGS: 00000246 ORIG_RAX: 00000000000000d1 [ 3431.680900] RAX: ffffffffffffffda RBX: 00007fddab6ccff8 RCX: 00007fddab7d1a3d [ 3431.688867] RDX: 000055ff413149c0 RSI: 0000000000000010 RDI: 00007fdda3226000 [ 3431.696824] RBP: 00007fdda3226000 R08: 00007fdda3240000 R09: 0000000000000280 [ 3431.704789] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000010 [ 3431.712755] R13: 0000000000000000 R14: 000055ff413149c0 R15: 000055ff4131b740 [ 3431.720723] </TASK> [ 3431.723160] Modules linked in: ublk_drv raid10 raid1 raid0 dm_raid raid456 async_raid6_recov async_memcpy async_pq async_xor xor async_tx raid6_pq nf_tables rpcsec_gss_krb5 auth_rpcgss nfsv4 dns_resolver nfs lockd grace nfs_localio netfs sunrpc rfkill intel_rapl_msr intel_rapl_common intel_uncore_frequency intel_uncore_frequency_common i10nm_edac skx_edac_common nfit libnvdimm x86_pkg_temp_thermal intel_powerclamp coretemp kvm_intel kvm ipmi_ssif iTCO_wdt irqbypass dax_hmem rapl cxl_acpi mgag200 cdc_ether isst_if_mbox_pci iTCO_vendor_support cxl_port intel_cstate isst_if_mmio cxl_core tg3 usbnet intel_th_gth i2c_algo_bit i2c_i801 mei_me ioatdma intel_uncore mii intel_th_pci einj mei pcspkr acpi_power_meter isst_if_common i2c_smbus intel_vsec intel_pch_thermal intel_th dca ipmi_si acpi_ipmi ipmi_devintf ipmi_msghandler acpi_pad sg fuse loop nfnetlink xfs sd_mod ahci libahci libata ghash_clmulni_intel wmi dm_mirror dm_region_hash dm_log dm_mod [last unloaded: null_blk] [ 3431.818860] CR2: 0000000000000060 [ 3431.822559] ---[ end trace 0000000000000000 ]--- [ 3431.856214] RIP: 0010:ublk_queue_rqs+0x7d/0x1c0 [ublk_drv] [ 3431.862342] Code: 00 00 4c 8b b8 c8 00 00 00 48 63 43 20 48 c1 e0 05 4d 8d 6c 07 30 48 85 d2 0f 84 c1 00 00 00 4c 01 f8 48 8b 7a 10 48 8b 70 40 <48> 8b 4e 60 48 39 4f 60 0f 84 9a 00 00 00 4d 85 e4 0f 84 9f 00 00 [ 3431.883302] RSP: 0018:ff711b900c5379d8 EFLAGS: 00010282 [ 3431.889136] RAX: ff300f05d5c534b0 RBX: ff300f05ea3b2940 RCX: ff300f05d5c53090 [ 3431.897094] RDX: ff300f05d5c534c0 RSI: 0000000000000000 RDI: 0000000000000000 [ 3431.905052] RBP: ff300f05ea3b2800 R08: 0000000000000000 R09: 0000000000000028 [ 3431.913009] R10: ff711b900c537a60 R11: ff300f062256ec20 R12: 0000000000000000 [ 3431.920974] R13: ff300f05d5c534e0 R14: ff711b900c537af0 R15: ff300f05d5c53090 [ 3431.928940] FS: 00007fddab6cd080(0000) GS:ff300f08df445000(0000) knlGS:0000000000000000 [ 3431.937973] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 3431.944388] CR2: 0000000000000060 CR3: 0000000122ff0001 CR4: 0000000000773ef0 [ 3431.952354] PKRU: 55555554 [ 3431.955374] Kernel panic - not syncing: Fatal exception [ 3431.961292] Kernel Offset: 0xd000000 from 0xffffffff81000000 (relocation range: 0xffffffff80000000-0xffffffffbfffffff) [ 3432.002335] ---[ end Kernel panic - not syncing: Fatal exception ]--- Best Regards, Changhui
