Hi guys,
JFYI, I noticed this warn on a v6.1-rc1-based kernel on my arm64
machine. I haven't checked the issue yet.
[ 46.054389] ehci-pci 0000:7a:01.0: applying Synopsys HC workaround
[ 46.067427] ------------[ cut here ]------------
[ 46.077148] WARNING: CPU: 0 PID: 661 at kernel/dma/mapping.c:499
dma_alloc_attrs+0x11c/0x160
[ 46.094931] Modules linked in:
[ 46.101355] CPU: 0 PID: 661 Comm: kworker/0:2 Not tainted
6.1.0-rc1-219582-gbb4d3aca99c0 #41
[ 46.119110] Hardware name: Huawei TaiShan 200 (Model 2280)/BC82AMDD,
BIOS 2280-V2 CS V3.B220.01 03/19/2020
[ 46.139415] Workqueue: events work_for_cpu_fn
[ 46.148580] pstate: 60400009 (nZCv daif +PAN -UAO -TCO -DIT -SSBS
BTYPE=--)
[ 46.163223] pc : dma_alloc_attrs+0x11c/0x160
[ 46.172199] lr : dma_alloc_attrs+0xa0/0x160
[ 46.180996] sp : ffff8000088277f0
[ 46.187963] x29: ffff8000088277f0 x28: ffff0020e39ab3c0 x27:
ffff0020e39ab390
[ 46.202980] x26: 0000000000000000 x25: ffffc32da194f640 x24:
ffff0020e5049e18
[ 46.217995] x23: 0000000000001000 x22: 0000000000000cc0 x21:
ffffc32da2025f78
[ 46.233009] x20: 1ffff00001104f0a x19: ffff202008c320d0 x18:
ffffc32da19d6e60
[ 46.248027] x17: ffffc32da09230b8 x16: ffffc32da09b1c00 x15:
ffffc32da09b1a7c
[ 46.263048] x14: ffffc32da0942200 x13: ffffc32da09230b8 x12:
ffff7865b49313f1
[ 46.278066] x11: 1ffff865b49313f0 x10: ffff7865b49313f0 x9 :
0000000041b58ab3
[ 46.293082] x8 : ffff700001104f0a x7 : dfff800000000000 x6 :
00000000f1f1f1f1
[ 46.308096] x5 : ffffc32d9fa47d38 x4 : dfff800000000000 x3 :
ffffc32d9fa47dd8
[ 46.323111] x2 : 0000000000000007 x1 : ffff202008c32318 x0 :
0000000000000000
[ 46.338126] Call trace:
[ 46.343264] dma_alloc_attrs+0x11c/0x160
[ 46.351510] dma_pool_alloc+0x158/0x350
[ 46.359578] ehci_qh_alloc+0xd8/0x1e8
[ 46.367276] ehci_setup+0x2a4/0x670
[ 46.374610] ehci_pci_setup+0x168/0x900
[ 46.382677] usb_add_hcd+0x430/0x8c0
[ 46.390198] usb_hcd_pci_probe+0x378/0x4f0
[ 46.398810] ehci_pci_probe+0x3c/0x58
[ 46.406508] local_pci_probe+0x78/0xf8
[ 46.414394] work_for_cpu_fn+0x30/0x50
[ 46.422276] process_one_work+0x3f8/0x660
[ 46.422276] process_one_work+0x3f8/0x660
[ 46.430706] worker_thread+0x430/0x700
[ 46.438589] kthread+0x1a4/0x1b8
[ 46.445372] ret_from_fork+0x10/0x20
[ 46.452888] ---[ end trace 0000000000000000 ]---
[ 46.463725] ehci-pci 0000:7a:01.0: can't setup: -12
[ 46.474016] ehci-pci 0000:7a:01.0: USB bus 1 deregistered
[ 46.485525] ehci-pci 0000:7a:01.0: init 0000:7a:01.0 fail, -12
[ 46.497831] ehci-pci: probe of 0000:7a:01.0 failed with error -12
[ 46.510782]
==================================================================
[ 46.525989] BUG: KASAN: invalid-free in kfree+0x5c/0xa8
[ 46.537001] Free of addr ffff202031f67420 by task swapper/0/1
[ 46.549097]
[ 46.552231] CPU: 92 PID: 1 Comm: swapper/0 Tainted: G W
6.1.0-rc1-219582-gbb4d3aca99c0 #41
[ 46.572561] Hardware name: Huawei TaiShan 200 (Model 2280)/BC82AMDD,
BIOS 2280-V2 CS V3.B220.01 03/19/2020
[ 46.592891] Call trace:
[ 46.592891] Call trace:
[ 46.598034] dump_backtrace+0x110/0x120
[ 46.606113] show_stack+0x18/0x40
[ 46.613089] dump_stack_lvl+0x68/0x84
[ 46.620800] print_report+0x18c/0x4d8
[ 46.628509] kasan_report_invalid_free+0x80/0xa0
[ 46.638234] __kasan_slab_free+0x170/0x188
[ 46.646857] __kmem_cache_free+0x138/0x2f0
[ 46.655479] kfree+0x5c/0xa8
[ 46.661541] device_unbind_cleanup+0x34/0xa8
[ 46.670535] really_probe+0x268/0x3a8
[ 46.678242] __driver_probe_device+0xb8/0x130
[ 46.687412] driver_probe_device+0x5c/0x150
[ 46.696218] __driver_attach+0x9c/0x1a0
[ 46.704292] bus_for_each_dev+0xec/0x160
[ 46.712549] driver_attach+0x34/0x48
[ 46.720074] bus_add_driver+0x1e8/0x300
[ 46.728147] driver_register+0xc0/0x1e0
[ 46.736221] __pci_register_driver+0xcc/0xe8
[ 46.745213] ehci_pci_init+0x5c/0x74
[ 46.752744] do_one_initcall+0xd4/0x280
[ 46.760818] kernel_init_freeable+0x2c8/0x334
[ 46.769993] kernel_init+0x24/0x148
[ 46.777334] ret_from_fork+0x10/0x20
[ 46.784860]
[ 46.787990] Allocated by task 1:
[ 46.794781] kasan_save_stack+0x2c/0x58
[ 46.802854] kasan_set_track+0x2c/0x40
[ 46.810743] kasan_save_alloc_info+0x24/0x38
[ 46.819732] __kasan_kmalloc+0xa0/0xb8
[ 46.827620] __kmalloc+0x68/0xa0
[ 46.834413] acpi_dma_get_range+0x190/0x2f8
[ 46.843219] acpi_arch_dma_setup+0xf8/0x278
[ 46.852027] acpi_dma_configure_id+0x54/0x170
[ 46.861196] pci_dma_configure+0x11c/0x128
[ 46.869816] really_probe+0x9c/0x3a8
[ 46.877340] __driver_probe_device+0xb8/0x130
[ 46.886509] driver_probe_device+0x5c/0x150
[ 46.895313] __driver_attach+0x9c/0x1a0
[ 46.903385] bus_for_each_dev+0xec/0x160
[ 46.911640] driver_attach+0x34/0x48
[ 46.919163] bus_add_driver+0x1e8/0x300
[ 46.927235] driver_register+0xc0/0x1e0
[ 46.935307] __pci_register_driver+0xcc/0xe8
[ 46.944294] ehci_pci_init+0x5c/0x74
[ 46.951819] do_one_initcall+0xd4/0x280
[ 46.959890] kernel_init_freeable+0x2c8/0x334
[ 46.969059] kernel_init+0x24/0x148
[ 46.976399] ret_from_fork+0x10/0x20
[ 46.983922]
[ 46.987052] The buggy address belongs to the object at ffff202031f67400
[ 46.987052] which belongs to the cache kmalloc-128 of size 128
[ 47.013417] The buggy address is located 32 bytes inside of
[ 47.013417] 128-byte region [ffff202031f67400, ffff202031f67480)
[ 47.037953]
[ 47.041083] The buggy address belongs to the physical page:
[ 47.052813] page:0000000002dceb95 refcount:1 mapcount:0
mapping:0000000000000000 index:0x0 pfn:0x202031f64
[ 47.073143] head:0000000002dceb95 order:2 compound_mapcount:0
compound_pincount:0
[ 47.088897] flags:
0x3bfffc0000010200(slab|head|node=3|zone=2|lastcpupid=0xffff)
[ 47.104479] raw: 3bfffc0000010200 0000000000000000 dead000000000122
ffff002080010180
[ 47.120782] raw: 0000000000000000 0000000000400040 00000001ffffffff
0000000000000000
[ 47.137081] page dumped because: kasan: bad access detected
[ 47.148810]
[ 47.151939] Memory state around the buggy address:
[ 47.162023] ffff202031f67300: fa fb fb fb fb fb fb fb fb fb fb fb fb
fb fb fb
[ 47.177228] ffff202031f67380: fc fc fc fc fc fc fc fc fc fc fc fc fc
fc fc fc
[ 47.192432] >ffff202031f67400: 00 00 00 00 00 00 00 00 fc fc fc fc fc
fc fc fc
[ 47.207635] ^
[ 47.216622] ffff202031f67480: fc fc fc fc fc fc fc fc fc fc fc fc fc
fc fc fc
[ 47.231827] ffff202031f67500: 00 00 00 00 00 00 00 00 00 fc fc fc fc
fc fc fc
[ 47.247029]
==================================================================
[ 47.262257] Disabling lock debugging due to kernel taint
