+ Sam
在 2024/10/18 8:06, Adam Green 写道:
Hi Shawn,
I can confirm that after reverting
commit 8396c793ffdf28bb8aee7cfe0891080f8cab7890
Author: Sam Protsenko <semen.protsenko@xxxxxxxxxx>
Date: Wed Mar 6 17:20:52 2024 -0600
mmc: dw_mmc: Fix IDMAC operation with pages bigger than 4K
that the problem does appear to have resolved itself, I tested this on
a variety of devices.
I'm confused about the patch. Doesn't max_seg_size stand for max bytes
per IDMA descriptor can handle? How can it be equal to max_req_size
which should be max_seq_size * max_segs（max_segs is IDMAC descriptors
number can be used） ?
/* Each descriptor can transfer up to 4KB of data in chained mode */
#define DW_MCI_DESC_DATA_LENGTH 0x1000
Best regards,
Adam
On Wed, 16 Oct 2024 at 11:13, Shawn Lin <shawn.lin@xxxxxxxxxxxxxx> wrote:
在 2024/10/16 17:55, Adam Green 写道:
Good morning,
I would like to report a regression that appears to have been
introduced into the linux kernel since v6.9.
I didn't see many patches for dw_mmc since 6.9. So I guess the fastest
way is to do a bisect. Or maybe you could try reverting this commit
first to see what will happen.
commit 8396c793ffdf28bb8aee7cfe0891080f8cab7890
Author: Sam Protsenko <semen.protsenko@xxxxxxxxxx>
Date: Wed Mar 6 17:20:52 2024 -0600
mmc: dw_mmc: Fix IDMAC operation with pages bigger than 4K
My device is currently experiencing a panic booting the kernel/rootfs
from an SD card.
The device is a Powkiddy RGB30 which is a portable handheld gaming
console with a Rockchip RK3566 SoC (arm64).
I have tested a variety of devices from a couple of manufacturers with
the same SoC and they all have the same issue,
I have also tested, 6.12-rc3 and linux-next and the same issue appears present.
A full UART dump can be found here: https://clbin.com/zLZAW
[ 41.547983] Unable to handle kernel paging request at virtual
address ffffffc08058e000
[ 41.553426] Mem abort info:
[ 41.558231] ESR = 0x0000000096000007
[ 41.563115] EC = 0x25: DABT (current EL), IL = 32 bits
[ 41.568135] SET = 0, FnV = 0
[ 41.572882] EA = 0, S1PTW = 0
[ 41.577575] FSC = 0x07: level 3 translation fault
[ 41.582404] Data abort info:
[ 41.586995] ISV = 0, ISS = 0x00000007, ISS2 = 0x00000000
[ 41.591848] CM = 0, WnR = 0, TnD = 0, TagAccess = 0
[ 41.596664] GCS = 0, Overlay = 0, DirtyBit = 0, Xs = 0
[ 41.601457] swapper pgtable: 4k pages, 39-bit VAs, pgdp=000000000363e000
[ 41.606359] [ffffffc08058e000] pgd=1000000000225003,
p4d=1000000000225003, pud=1000000000225003, pmd=1000000000c8c003,
pte=0000000000000000
[ 41.616442] Internal error: Oops: 0000000096000007 [#1] PREEMPT SMP
[ 41.621544] Modules linked in: hci_uart btrtl bluetooth rfkill
[ 41.626678] CPU: 0 UID: 0 PID: 0 Comm: swapper/0 Not tainted 6.12.0-rc2 #1
[ 41.631922] Hardware name: Powkiddy RGB30 (DT)
[ 41.636951] pstate: 20400009 (nzCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
[ 41.642330] pc : dw_mci_idmac_start_dma+0xa0/0x358
[ 41.647585] lr : __dw_mci_start_request+0x21c/0x6a0
[ 41.652827] sp : ffffffc080003da0
[ 41.657882] x29: ffffffc080003da0 x28: ffffff8001f06d80 x27: ffffffc08058d000
[ 41.663399] x26: ffffffc08058e000 x25: 0000000000002711 x24: 0000000000002000
[ 41.668864] x23: ffffff800167dc80 x22: 0000000080000012 x21: 0000000000001000
[ 41.674257] x20: 000000003b5d1000 x19: 0000000000001000 x18: 0000000972073a81
[ 41.679654] x17: ffffff9c39b47000 x16: ffffffc080000000 x15: 0000000000000001
[ 41.685074] x14: 0000000000000004 x13: 000001ba5087c8e8 x12: 00000000000001a8
[ 41.690506] x11: 0000000000000040 x10: ffffffe40628d890 x9 : 0000000000000000
[ 41.695972] x8 : ffffff803fd44080 x7 : 0000000008f0d180 x6 : 000000003b9ac9ff
[ 41.701495] x5 : 0000000000fffffe x4 : ffffffc08058de80 x3 : 00000000b2d05e00
[ 41.707073] x2 : ffffffe40546ab08 x1 : ffffffc08058e000 x0 : 0000000000001000
[ 41.712686] Call trace:
[ 41.717857] dw_mci_idmac_start_dma+0xa0/0x358
[ 41.723266] __dw_mci_start_request+0x21c/0x6a0
[ 41.728719] dw_mci_work_func+0x4c8/0x4d8
[ 41.734144] process_one_work+0x148/0x284
[ 41.739587] bh_worker+0x224/0x278
[ 41.744985] workqueue_softirq_action+0x78/0x88
[ 41.750545] tasklet_action+0x14/0x3c
[ 41.756023] handle_softirqs+0x100/0x23c
[ 41.761506] __do_softirq+0x14/0x20
[ 41.766917] ____do_softirq+0x10/0x20
[ 41.772301] call_on_irq_stack+0x24/0x54
[ 41.777689] do_softirq_own_stack+0x1c/0x40
[ 41.783106] irq_exit_rcu+0x94/0xd0
[ 41.788455] el1_interrupt+0x38/0x68
[ 41.793799] el1h_64_irq_handler+0x18/0x24
[ 41.799200] el1h_64_irq+0x68/0x6c
[ 41.804532] default_idle_call+0x28/0x58
[ 41.809931] do_idle+0x1fc/0x260
[ 41.815152] cpu_startup_entry+0x34/0x40
[ 41.820346] kernel_init+0x0/0x140
[ 41.825437] console_on_rootfs+0x0/0x6c
[ 41.830477] __primary_switched+0x80/0x88
[ 41.835501] Code: 54000280 d294f8c0 940e1f8c d503203f (b9400340)
[ 41.840748] ---[ end trace 0000000000000000 ]---
[ 41.845896] Kernel panic - not syncing: Oops: Fatal exception in interrupt
[ 41.851321] SMP: stopping secondary CPUs
[ 41.856502] Kernel Offset: 0x2384800000 from 0xffffffc080000000
[ 41.861840] PHYS_OFFSET: 0x0
[ 41.866814] CPU features: 0x0c,00000014,00280928,4201720b
[ 41.872087] Memory Limit: none
[ 41.877119] Rebooting in 1 seconds..
Best regards,
Adam Green
