From: John Garry <john.g.garry@oracle.com>
To: Bart Van Assche <bvanassche@acm.org>,
"Martin K . Petersen" <martin.petersen@oracle.com>
Cc: linux-scsi@vger.kernel.org
Subject: Re: [PATCH v5 00/28] Optimize the hot path in the UFS driver
Date: Fri, 26 Sep 2025 11:08:40 +0100 [thread overview]
Message-ID: <dab3464e-7f60-4843-aede-6c81a348da8a@oracle.com> (raw)
In-Reply-To: <20250924203142.4073403-1-bvanassche@acm.org>
Did you notice this when you tested?
[ 0.927347] dev_size_mb=8, opts=0x0, submit_queues=1, statistics=0
[ 0.930065] ------------[ cut here ]------------
[ 0.931137] WARNING: CPU: 1 PID: 1 at drivers/scsi/scsi_scan.c:228
scsi_realloc_sdev_budget_map+0x163/0x180
[ 0.933292] Modules linked in:
[ 0.933948] CPU: 1 UID: 0 PID: 1 Comm: swapper/0 Not tainted
6.17.0-rc1-00143-g67ede8ca8ab5-dirty #1769 PREEMPT(voluntary)
[ 0.936317] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009),
BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 0.938683] RIP: 0010:scsi_realloc_sdev_budget_map+0x163/0x180
[ 0.939955] Code: 45 39 ee 44 89 ee 48 8b 7c 24 28 41 0f 46 f6 e8
23 df be ff 48 8b 7c 24 08 e8 f9 99 85 ff 48 8b 3c 24 e8 90 ed 8a ff
eb ae 90 <0f> 0b 90 48 83 c4 30 b8 ea ff ff ff 5b 5d 41 5c 41 5d 41 5e
41 5f
[ 0.943854] RSP: 0000:ffffb29bc00139c8 EFLAGS: 00010246
[ 0.944950] RAX: 0000000000000080 RBX: ffff89bac0a53800 RCX:
0000000000000005
[ 0.946515] RDX: 0000000000000003 RSI: 0000000000000004 RDI:
ffff89bac0a53800
[ 0.948019] RBP: ffff89bac0a4e000 R08: 0000000000000000 R09:
0000000000000001
[ 0.949521] R10: 0000000000000000 R11: 0000000000000008 R12:
00000000000000c0
[ 0.951038] R13: 00000000000000c0 R14: ffff89bac3d09828 R15:
0000000000000005
[ 0.952537] FS: 0000000000000000(0000) GS:ffff89bb47fe3000(0000)
knlGS:0000000000000000
[ 0.954258] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 0.955464] CR2: 0000000000000000 CR3: 0000000120e30001 CR4:
0000000000370ef0
[ 0.957001] Call Trace:
[ 0.957547] <TASK>
[ 0.958087] ? attribute_container_add_device+0x4b/0x130
[ 0.959295] scsi_alloc_sdev+0x27f/0x360
[ 0.960191] scsi_probe_and_add_lun+0x1e4/0x2f0
[ 0.961203] __scsi_scan_target+0x104/0x210
[ 0.962157] scsi_scan_channel+0x54/0x90
[ 0.962942] scsi_scan_host_selected+0xcf/0x100
[ 0.964420] scsi_scan_host+0x19f/0x1c0
[ 0.965289] sdebug_driver_probe+0x1c0/0x420
[ 0.966317] really_probe+0xba/0x2b0
[ 0.967171] ? __pfx___device_attach_driver+0x10/0x10
[ 0.968308] __driver_probe_device+0x6e/0x110
[ 0.969286] driver_probe_device+0x1a/0xe0
[ 0.970232] __device_attach_driver+0x7e/0x110
[ 0.971276] bus_for_each_drv+0x8f/0xe0
[ 0.972183] __device_attach+0xa9/0x1a0
[ 0.973080] bus_probe_device+0x88/0xa0
[ 0.973973] device_add+0x61c/0x810
[ 0.974805] sdebug_add_host_helper+0x1ca/0x260
[ 0.975843] scsi_debug_init+0x341/0x7d0
[ 0.976770] ? __pfx_scsi_debug_init+0x10/0x10
[ 0.977801] do_one_initcall+0x55/0x220
[ 0.978706] kernel_init_freeable+0x199/0x2e0
[ 0.979744] ? __pfx_kernel_init+0x10/0x10
[ 0.980688] kernel_init+0x15/0x1c0
[ 0.981765] ret_from_fork+0x80/0xd0
[ 0.982710] ? __pfx_kernel_init+0x10/0x10
[ 0.983689] ret_from_fork_asm+0x1a/0x30
[ 0.984742] </TASK>
[ 0.985223] ---[ end trace 0000000000000000 ]---
[ 0.986231] scsi_alloc_sdev: Allocation failure during SCSI
scanning, some SCSI devices might not be configured
next prev parent reply other threads:[~2025-09-26 10:08 UTC|newest]
Thread overview: 47+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-09-24 20:30 [PATCH v5 00/28] Optimize the hot path in the UFS driver Bart Van Assche
2025-09-24 20:30 ` [PATCH v5 01/28] scsi: core: Support allocating reserved commands Bart Van Assche
2025-09-24 20:30 ` [PATCH v5 02/28] scsi: core: Move two statements Bart Van Assche
2025-09-24 20:30 ` [PATCH v5 03/28] scsi: core: Make the budget map optional Bart Van Assche
2025-09-24 20:30 ` [PATCH v5 04/28] scsi: core: Support allocating a pseudo SCSI device Bart Van Assche
2025-09-26 7:14 ` John Garry
2025-09-26 20:01 ` Bart Van Assche
2025-09-26 22:21 ` Bart Van Assche
2025-09-24 20:30 ` [PATCH v5 05/28] scsi: core: Introduce .queue_reserved_command() Bart Van Assche
2025-09-26 7:24 ` John Garry
2025-09-26 20:05 ` Bart Van Assche
2025-09-24 20:30 ` [PATCH v5 06/28] scsi: core: Add scsi_{get,put}_internal_cmd() helpers Bart Van Assche
2025-09-25 16:38 ` John Garry
2025-09-24 20:30 ` [PATCH v5 07/28] scsi_debug: Abort SCSI commands via .queue_reserved_command() Bart Van Assche
2025-09-26 7:32 ` John Garry
2025-09-26 20:44 ` Bart Van Assche
2025-09-30 7:03 ` John Garry
2025-10-01 18:26 ` Bart Van Assche
2025-09-24 20:30 ` [PATCH v5 08/28] ufs: core: Move an assignment in ufshcd_mcq_process_cqe() Bart Van Assche
2025-09-26 6:12 ` Avri Altman
2025-09-24 20:30 ` [PATCH v5 09/28] ufs: core: Change the type of one ufshcd_add_cmd_upiu_trace() argument Bart Van Assche
2025-09-24 20:30 ` [PATCH v5 10/28] ufs: core: Only call ufshcd_add_command_trace() for SCSI commands Bart Van Assche
2025-09-24 20:30 ` [PATCH v5 11/28] ufs: core: Change the type of one ufshcd_add_command_trace() argument Bart Van Assche
2025-09-24 20:30 ` [PATCH v5 12/28] ufs: core: Change the type of one ufshcd_send_command() argument Bart Van Assche
2025-09-24 20:30 ` [PATCH v5 13/28] ufs: core: Only call ufshcd_should_inform_monitor() for SCSI commands Bart Van Assche
2025-09-24 20:30 ` [PATCH v5 14/28] ufs: core: Change the monitor function argument types Bart Van Assche
2025-09-26 6:24 ` Avri Altman
2025-09-24 20:30 ` [PATCH v5 15/28] ufs: core: Rework ufshcd_mcq_compl_pending_transfer() Bart Van Assche
2025-09-26 6:44 ` Avri Altman
2025-09-24 20:30 ` [PATCH v5 16/28] ufs: core: Rework ufshcd_eh_device_reset_handler() Bart Van Assche
2025-09-26 7:17 ` Avri Altman
2025-09-24 20:30 ` [PATCH v5 17/28] ufs: core: Rework the SCSI host queue depth calculation code Bart Van Assche
2025-09-24 20:30 ` [PATCH v5 18/28] ufs: core: Allocate the SCSI host earlier Bart Van Assche
2025-09-24 20:30 ` [PATCH v5 19/28] ufs: core: Call ufshcd_init_lrb() later Bart Van Assche
2025-09-27 9:39 ` Avri Altman
2025-09-24 20:30 ` [PATCH v5 20/28] ufs: core: Use hba->reserved_slot Bart Van Assche
2025-09-24 20:30 ` [PATCH v5 21/28] ufs: core: Make the reserved slot a reserved request Bart Van Assche
2025-09-24 20:30 ` [PATCH v5 22/28] ufs: core: Do not clear driver-private command data Bart Van Assche
2025-09-24 20:30 ` [PATCH v5 23/28] ufs: core: Optimize the hot path Bart Van Assche
2025-09-24 20:30 ` [PATCH v5 24/28] ufs: core: Pass a SCSI pointer instead of an LRB pointer Bart Van Assche
2025-09-24 20:30 ` [PATCH v5 25/28] ufs: core: Remove the ufshcd_lrb task_tag member Bart Van Assche
2025-09-24 20:30 ` [PATCH v5 26/28] ufs: core: Make blk_mq_tagset_busy_iter() skip reserved requests Bart Van Assche
2025-09-24 20:30 ` [PATCH v5 27/28] ufs: core: Move code out of ufshcd_wait_for_dev_cmd() Bart Van Assche
2025-09-27 9:11 ` Avri Altman
2025-09-24 20:30 ` [PATCH v5 28/28] ufs: core: Switch to scsi_get_internal_cmd() Bart Van Assche
2025-09-26 10:08 ` John Garry [this message]
2025-09-26 17:32 ` [PATCH v5 00/28] Optimize the hot path in the UFS driver Bart Van Assche
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