Hi Geert,
On Mon, Dec 16, 2019 at 01:47:40PM +0100, Geert Uytterhoeven wrote:
> Add device nodes for the SDHI Interfaces on the Renesas R-Car M3-W+
> (r8a77961) SoC.
>
> Signed-off-by: Geert Uytterhoeven <geert+renesas@xxxxxxxxx>
> ---
> v2:
> - No changes.
>
> Test procedure (eMMC):
> 1. "hd /dev/mmcblk0boot1".
> ---
> arch/arm64/boot/dts/renesas/r8a77961.dtsi | 39 +++++++++++++++++++++--
> 1 file changed, 36 insertions(+), 3 deletions(-)
Reviewed-by: Eugeniu Rosca <erosca@xxxxxxxxxxxxxx>
Tested-by: Eugeniu Rosca <erosca@xxxxxxxxxxxxxx>
[Unrelated to this patch/series] Building the kernel image on your
topic/r8a77961-extra-v2 branch and booting the M3-W+ Salvator-XS target
from MMC, I get a panic [1]. Fortunately, this is already fixed by
7de7de7ca0ae0f ("Fix root mounting with no mount options")
[1] panic booting from SD card (KASAN=y)
[ 8.825749] Waiting for root device /dev/mmcblk1p2...
[ 8.909815] mmc1: new ultra high speed SDR104 SDHC card at address aaaa
[ 8.936963] mmcblk1: mmc1:aaaa SL32G 29.7 GiB
[ 8.997913] mmcblk1: p1 p2 p3 < p5 p6 p7 >
[ 9.067410] ==================================================================
[ 9.075652] BUG: KASAN: null-ptr-deref in strncpy+0x4c/0x6c
[ 9.081862] Read of size 1 at addr 0000000000000000 by task swapper/0/1
[ 9.089185]
[ 9.090944] CPU: 3 PID: 1 Comm: swapper/0 Not tainted 5.5.0-rc2+ #2
[ 9.097890] Hardware name: Renesas Salvator-X 2nd version board based on r8a77961 (DT)
[ 9.106652] Call trace:
[ 9.109458] dump_backtrace+0x0/0x244
[ 9.113574] show_stack+0x1c/0x24
[ 9.117316] dump_stack+0xe4/0x140
[ 9.121155] __kasan_report+0x1b0/0x1c8
[ 9.125458] kasan_report+0xc/0x14
[ 9.129289] __asan_load1+0x34/0x60
[ 9.133216] strncpy+0x4c/0x6c
[ 9.136681] do_mount_root+0x7c/0x150
[ 9.140797] mount_block_root+0x1c4/0x304
[ 9.145293] mount_root+0x17c/0x1bc
[ 9.149222] prepare_namespace+0x150/0x160
[ 9.153812] kernel_init_freeable+0x3b8/0x434
[ 9.158686] kernel_init+0x18/0x130
[ 9.162617] ret_from_fork+0x10/0x18
[ 9.166630] ==================================================================
[ 9.174629] Disabling lock debugging due to kernel taint
[ 9.180510] Unable to handle kernel NULL pointer dereference at virtual address 0000000000000000
[ 9.189491] Mem abort info:
[ 9.192387] ESR = 0x96000004
[ 9.195554] EC = 0x25: DABT (current EL), IL = 32 bits
[ 9.200989] SET = 0, FnV = 0
[ 9.204145] EA = 0, S1PTW = 0
[ 9.207394] Data abort info:
[ 9.210374] ISV = 0, ISS = 0x00000004
[ 9.214318] CM = 0, WnR = 0
[ 9.217393] [0000000000000000] user address but active_mm is swapper
[ 9.223892] Internal error: Oops: 96000004 [#1] PREEMPT SMP
[ 9.229535] Modules linked in:
[ 9.232646] CPU: 0 PID: 1 Comm: swapper/0 Tainted: G B 5.5.0-rc2+ #2
[ 9.240391] Hardware name: Renesas Salvator-X 2nd version board based on r8a77961 (DT)
[ 9.248402] pstate: 60000005 (nZCv daif -PAN -UAO)
[ 9.253260] pc : strncpy+0x4c/0x6c
[ 9.256711] lr : strncpy+0x4c/0x6c
[ 9.260158] sp : ffff000675b57b80
[ 9.263518] x29: ffff000675b57b80 x28: ffff00066ebc7005
[ 9.268900] x27: 0000000000000008 x26: ffffa000112adf30
[ 9.274282] x25: fffffe00199af1c0 x24: ffffa00010c31ba0
[ 9.279664] x23: ffff00066e418fff x22: ffff00066ebc7000
[ 9.285046] x21: ffff00066e418000 x20: 0000000000000000
[ 9.290428] x19: ffff00066e418000 x18: 0000000000000000
[ 9.295809] x17: 00000000000014a0 x16: 0000000000001540
[ 9.301190] x15: 0000000000001498 x14: 0000000000001480
[ 9.306570] x13: 0000000000001488 x12: ffff8000ceb6af0e
[ 9.311952] x11: 1fffe000ceb6af0e x10: 0000000000001710
[ 9.317334] x9 : ffffa00010c17f3c x8 : ffff000675b57877
[ 9.322715] x7 : ffff8000ceb6af0f x6 : ffff8000ceb6af0f
[ 9.328097] x5 : dfffa00000000000 x4 : ffff000675b48000
[ 9.333478] x3 : ffffa00010c12678 x2 : 0000000000000007
[ 9.338859] x1 : ac027d2c81180b00 x0 : 0000000000000000
[ 9.344240] Call trace:
[ 9.346729] strncpy+0x4c/0x6c
[ 9.349832] do_mount_root+0x7c/0x150
[ 9.353546] mount_block_root+0x1c4/0x304
[ 9.357611] mount_root+0x17c/0x1bc
[ 9.361150] prepare_namespace+0x150/0x160
[ 9.365303] kernel_init_freeable+0x3b8/0x434
[ 9.369718] kernel_init+0x18/0x130
[ 9.373258] ret_from_fork+0x10/0x18
[ 9.376893] Code: a8c47bfd d65f03c0 aa1403e0 97dc44f6 (39400296)
[ 9.383067] ---[ end trace 73d9c2c2bc9e939b ]---
[ 9.387965] Kernel panic - not syncing: Attempted to kill init! exitcode=0x0000000b
[ 9.395737] SMP: stopping secondary CPUs
[ 9.399731] Kernel Offset: disabled
[ 9.403268] CPU features: 0x10002,21006004
[ 9.407415] Memory Limit: none
[ 9.410545] ---[ end Kernel panic - not syncing: Attempted to kill init! exitcode=0x0000000b ]---
--
Best Regards,
Eugeniu
