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Message-ID: <20250122093020.6e8a4e5b@gandalf.local.home>
Date: Wed, 22 Jan 2025 09:30:20 -0500
From: Steven Rostedt <rostedt@...dmis.org>
To: LKML <linux-kernel@...r.kernel.org>
Cc: Linus Torvalds <torvalds@...ux-foundation.org>, Daniel Wagner
<wagi@...nel.org>, Christoph Hellwig <hch@....de>, Hannes Reinecke
<hare@...e.de>, Ming Lei <ming.lei@...hat.com>, John Garry
<john.g.garry@...cle.com>, Jens Axboe <axboe@...nel.dk>
Subject: WARNING: CPU: 3 PID: 1 at block/blk-mq-cpumap.c:90
blk_mq_map_hw_queues+0xf3/0x100
I hit this WARN_ON on both my 32 bit test VM and my 64 bit one:
[ 1.861456] ------------[ cut here ]------------
[ 1.862394] WARNING: CPU: 3 PID: 1 at block/blk-mq-cpumap.c:90 blk_mq_map_hw_queues+0xf3/0x100
[ 1.864100] Modules linked in:
[ 1.864785] CPU: 3 UID: 0 PID: 1 Comm: swapper/0 Not tainted 6.13.0-test-01253-g66611c047570-dirty #128
[ 1.866545] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[ 1.868320] EIP: blk_mq_map_hw_queues+0xf3/0x100
[ 1.869254] Code: 0c 3a b4 db 25 ff 00 00 00 74 17 f3 0f bc c0 83 f8 07 77 0e 8b 0e c7 04 81 00 00 00 00 8d 48 01 75 d6 83 c4 08 5b 5e 5f 5d c3 <0f> 0b eb c5 90 2e 8d b4 26 00 00 00 00 3e 8d 74 26 00 55 31 c9 89
[ 1.872620] EAX: 00000000 EBX: 00000000 ECX: 00000000 EDX: 00000000
[ 1.873812] ESI: c1c2bc20 EDI: c130dc10 EBP: c116dcbc ESP: c116dca8
[ 1.875002] DS: 007b ES: 007b FS: 00d8 GS: 0000 SS: 0068 EFLAGS: 00010206
[ 1.878621] CR0: 80050033 CR2: 00000000 CR3: 1bdf8000 CR4: 000006f0
[ 1.879854] Call Trace:
[ 1.880441] ? show_regs.cold+0x14/0x1d
[ 1.881245] ? __warn.cold+0x42/0xe8
[ 1.882011] ? blk_mq_map_hw_queues+0xf3/0x100
[ 1.882837] ? report_bug+0x101/0x140
[ 1.883497] ? blk_mq_map_hw_queues+0xf4/0x100
[ 1.884238] ? exc_overflow+0x40/0x40
[ 1.884866] ? handle_bug+0x46/0x70
[ 1.885467] ? exc_invalid_op+0x18/0x60
[ 1.886116] ? handle_exception+0x133/0x133
[ 1.886814] ? vp_modern_probe+0x5b8/0x620
[ 1.887514] ? exc_overflow+0x40/0x40
[ 1.888148] ? blk_mq_map_hw_queues+0xf3/0x100
[ 1.888904] ? vp_modern_probe+0x5b8/0x620
[ 1.889586] ? exc_overflow+0x40/0x40
[ 1.890208] ? blk_mq_map_hw_queues+0xf3/0x100
[ 1.890939] virtblk_map_queues+0x55/0x80
[ 1.891642] blk_mq_update_queue_map+0x77/0xb0
[ 1.892382] blk_mq_alloc_tag_set+0x16b/0x390
[ 1.893103] virtblk_probe+0x158/0xe40
[ 1.893740] ? idr_alloc_cyclic+0x46/0xa0
[ 1.894414] virtio_dev_probe+0x281/0x370
[ 1.895084] really_probe+0xc2/0x310
[ 1.896168] __driver_probe_device+0x71/0x150
[ 1.896887] ? kernfs_create_dir_ns+0x46/0x70
[ 1.897612] driver_probe_device+0x1f/0xa0
[ 1.898314] __driver_attach+0xa7/0x1a0
[ 1.898957] ? __device_attach_driver+0x100/0x100
[ 1.899749] bus_for_each_dev+0x70/0xc0
[ 1.900406] driver_attach+0x19/0x20
[ 1.901020] ? __device_attach_driver+0x100/0x100
[ 1.901777] bus_add_driver+0xe6/0x1c0
[ 1.902416] driver_register+0x6d/0xc0
[ 1.903051] __register_virtio_driver+0x1e/0x30
[ 1.903816] virtio_blk_init+0x4d/0x74
[ 1.904467] ? regmap_initcall+0x14/0x14
[ 1.905134] do_one_initcall+0x4b/0x2c0
[ 1.905796] ? parse_args+0x1db/0x3e0
[ 1.906431] kernel_init_freeable+0x186/0x1c4
[ 1.907148] ? rest_init+0xb0/0xb0
[ 1.907812] kernel_init+0x17/0x110
[ 1.908533] ret_from_fork+0x38/0x50
[ 1.909301] ? rest_init+0xb0/0xb0
[ 1.910028] ret_from_fork_asm+0x12/0x18
[ 1.910902] entry_INT80_32+0xf0/0xf0
[ 1.913755] ---[ end trace 0000000000000000 ]---
Seems introduced by: 1452e9b470c90 ("blk-mq: introduce blk_mq_map_hw_queues")
Config for x86_64 attached.
-- Steve
Download attachment "config" of type "application/octet-stream" (129601 bytes)
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