Re: Linux 5.18.x: sdhci issue

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Hi,

On Thu, May 5, 2022 at 7:03 AM Tony Lindgren <tony@xxxxxxxxxxx> wrote:
>
> Hi,
>
> * Yegor Yefremov <yegorslists@xxxxxxxxxxxxxx> [220504 09:12]:
> > Hi Tony, all,
> >
> > During the kernel boot I see the following error. The device is still
> > working afterwards. 5.17.5 shows the same behavior. Is this a known
> > issue?
>
> Thanks for reporting it, I was not aware of this one. Might be worth
> bisecting. Adding linux-mmc and Ulf.

After enabling the CONFIG_DMA_API_DEBUG option, I also get the following error:

Starting syslogd: OK
Starting klogd: OK
Running sysctl: OK
Populating /dev using udev: [    7.511893] ------------[ cut here ]------------
[    7.516605] WARNING: CPU: 0 PID: 73 at kernel/dma/debug.c:1073
check_for_illegal_area+0xd0/0x180
[    7.525734] DMA-API: sdhci-omap 48060000.mmc: device driver maps
memory from kernel text or rodata [addr=(ptrval)] [len=12288]
[    7.537275] Modules linked in:
[    7.540429] CPU: 0 PID: 73 Comm: kworker/0:2H Not tainted 5.18.0-rc7 #14
[    7.547182] Hardware name: Generic AM33XX (Flattened Device Tree)
[    7.553320] Workqueue: kblockd blk_mq_run_work_fn
[    7.558098]  unwind_backtrace from show_stack+0x10/0x14
[    7.563386]  show_stack from dump_stack_lvl+0x58/0x70
[    7.568501]  dump_stack_lvl from __warn+0xb4/0x24c
[    7.573342]  __warn from warn_slowpath_fmt+0x74/0xb8
[    7.578352]  warn_slowpath_fmt from check_for_illegal_area+0xd0/0x180
[    7.584845]  check_for_illegal_area from debug_dma_map_sg+0x60/0x3d8
[    7.591249]  debug_dma_map_sg from __dma_map_sg_attrs+0xa4/0x13c
[    7.597316]  __dma_map_sg_attrs from dma_map_sg_attrs+0x14/0x20
[    7.603288]  dma_map_sg_attrs from sdhci_pre_dma_transfer+0xcc/0x134
[    7.609705]  sdhci_pre_dma_transfer from mmc_blk_mq_issue_rq+0x2f4/0xa58
[    7.616462]  mmc_blk_mq_issue_rq from mmc_mq_queue_rq+0x124/0x258
[    7.622604]  mmc_mq_queue_rq from blk_mq_dispatch_rq_list+0x1b8/0x8ac
[    7.629104]  blk_mq_dispatch_rq_list from
blk_mq_do_dispatch_sched+0x2ec/0x350
[    7.636387]  blk_mq_do_dispatch_sched from
__blk_mq_sched_dispatch_requests+0x118/0x170
[    7.644448]  __blk_mq_sched_dispatch_requests from
blk_mq_sched_dispatch_requests+0x34/0x5c
[    7.652859]  blk_mq_sched_dispatch_requests from
__blk_mq_run_hw_queue+0xf8/0x230
[    7.660402]  __blk_mq_run_hw_queue from process_one_work+0x284/0x72c
[    7.666820]  process_one_work from worker_thread+0x28/0x4b0
[    7.672441]  worker_thread from kthread+0xe4/0x104
[    7.677280]  kthread from ret_from_fork+0x14/0x28
[    7.682027] Exception stack(0xd0421fb0 to 0xd0421ff8)
[    7.687116] 1fa0:                                     00000000
00000000 00000000 00000000
[    7.695346] 1fc0: 00000000 00000000 00000000 00000000 00000000
00000000 00000000 00000000
[    7.703574] 1fe0: 00000000 00000000 00000000 00000000 00000013 00000000
[    7.710321] irq event stamp: 0
[    7.713411] hardirqs last  enabled at (0): [<00000000>] 0x0
[    7.719029] hardirqs last disabled at (0): [<c0135e68>]
copy_process+0x630/0x19c4
[    7.726626] softirqs last  enabled at (0): [<c0135e68>]
copy_process+0x630/0x19c4
[    7.734219] softirqs last disabled at (0): [<00000000>] 0x0
[    7.739883] ---[ end trace 0000000000000000 ]---
[    7.837580] udevd[101]: starting version 3.2.11

Regards,
Yegor



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