Hi,
>
>Hi,
>
>Pawel Laszczak writes:
>
>> Hi,
>>
>>>
>>>Pawel Laszczak writes:
>> +static int cdns3_gadget_start(struct cdns3 *cdns)
>> +{
>> +struct cdns3_device *priv_dev;
>> +u32 max_speed;
>> +int ret;
>> +
>> +priv_dev = kzalloc(si
From: Rick
NVIDIA 3.1 xHCI card would lose power when moving power state into D3Cold.
Thus we need to wait CNR bit to clear when xhci resmue as xhci init.
Signed-off-by: Rick
---
drivers/usb/host/xhci-pci.c | 20
1 file changed, 20 insertions(+)
diff --git a/drivers/usb/h
Hi,
Rick Tseng writes:
> +static int xhci_poll_cnr(struct usb_hcd *hcd)
> +{
> + struct xhci_hcd *xhci = hcd_to_xhci(hcd);
> + void __iomem *reg = &xhci->op_regs->status;
> + u32 result;
> + int ret;
> +
> + ret = readl_poll_timeout_atomic(reg, result,
> +
Hi,
Pawel Laszczak writes:
>>> I have such situation in which one interrupt line is shared with ehci and
>>> cdns3 driver.
>>> In such case this function returns error code.
>>
>>which function returns error code?
>
> devm_request_threaded_irq, of course if I set IRQF_SHARED | IRQF_ONESHOT.
> A
Am Montag, den 12.08.2019, 15:24 +0800 schrieb Rick Tseng:
> From: Rick
>
> NVIDIA 3.1 xHCI card would lose power when moving power state into D3Cold.
> Thus we need to wait CNR bit to clear when xhci resmue as xhci init.
Should any controller have CNR set? Why is this specific to a vendor?
Hi,
On 11/08/2019 14:59, Pawel Laszczak wrote:
> Hi,
>
>>
>> On 21/07/2019 21:32, Pawel Laszczak wrote:
>>> This patch introduce new Cadence USBSS DRD driver to Linux kernel.
>>>
>>> The Cadence USBSS DRD Controller is a highly configurable IP Core which
>>> can be instantiated as Dual-Role Devic
Hi,
>
>Pawel Laszczak writes:
I have such situation in which one interrupt line is shared with ehci and
cdns3 driver.
In such case this function returns error code.
>>>
>>>which function returns error code?
>>
>> devm_request_threaded_irq, of course if I set IRQF_SHARED | IRQF_ONE
Am Sonntag, den 11.08.2019, 13:46 -0700 schrieb syzbot:
> syzbot has found a reproducer for the following crash on:
>
> HEAD commit:e96407b4 usb-fuzzer: main usb gadget fuzzer driver
> git tree: https://github.com/google/kasan.git usb-fuzzer
> console output: https://syzkaller.appspot.co
Hi,
>
>On 11/08/2019 14:59, Pawel Laszczak wrote:
>> Hi,
>>
>>>
>>> On 21/07/2019 21:32, Pawel Laszczak wrote:
This patch introduce new Cadence USBSS DRD driver to Linux kernel.
The Cadence USBSS DRD Controller is a highly configurable IP Core which
can be instantiated as Dual-
Hi,
Pawel Laszczak writes:
>>Quick question, then: these ISTS registers, are they masked interrupt
>>status or raw interrupt status?
>
> Yes it's masked, but after masking them the new interrupts will not be
> reported
> In ISTS registers. Form this reason I can mask onl
Hello,
syzbot has tested the proposed patch but the reproducer still triggered
crash:
KASAN: slab-out-of-bounds Read in hidraw_ioctl
==
BUG: KASAN: slab-out-of-bounds in strnlen+0x75/0x80 lib/string.c:542
Read of size 1 at addr f
Hi Greg,
here's a pull request for some fixes that I collected from linux-usb
mailing list.
Let me know if you want anything to be changed.
Cheers
The following changes since commit d45331b00ddb179e291766617259261c112db872:
Linux 5.3-rc4 (2019-08-11 13:26:41 -0700)
are available in the Git
On 11/08/2019 14:59, Pawel Laszczak wrote:
> Hi,
>
>>
>> On 21/07/2019 21:32, Pawel Laszczak wrote:
>>> This patch introduce new Cadence USBSS DRD driver to Linux kernel.
>>>
>>> The Cadence USBSS DRD Controller is a highly configurable IP Core which
>>> can be instantiated as Dual-Role Device
>
>Hi,
>
>Pawel Laszczak writes:
>>>Quick question, then: these ISTS registers, are they masked interrupt
>>>status or raw interrupt status?
>>
>> Yes it's masked, but after masking them the new interrupts will not be
>> reported
>> In ISTS registers. Form this reason I ca
Hi,
> +real_role = cdsn3_real_role_switch_get(cdns->dev);
> +
> +current_role = role;
> +dev_dbg(cdns->dev, "Switching role");
> +
> +ret = cdns3_role_start(cdns, real_role);
> +if (ret) {
> +/* Back to
Hi,
Pawel Laszczak writes:
Yet another thread? Can't you just run this right before giving back the
USB request? So, don't do it from IRQ handler, but from giveback path?
>>>
>>> Do you mean in:
>>> if (request->complete) {
>>> spin_unlock(&priv_dev->lock);
>>>
On 12/08/2019 13:31, Heikki Krogerus wrote:
> Hi,
>
>> +real_role = cdsn3_real_role_switch_get(cdns->dev);
>> +
>> +current_role = role;
>> +dev_dbg(cdns->dev, "Switching role");
>> +
>> +ret = cdns3_role_start(cdns, real_role);
>> +
>
>On 11/08/2019 14:59, Pawel Laszczak wrote:
>> Hi,
>>
>>>
>>> On 21/07/2019 21:32, Pawel Laszczak wrote:
This patch introduce new Cadence USBSS DRD driver to Linux kernel.
The Cadence USBSS DRD Controller is a highly configurable IP Core which
can be instantiated as Dual-Role
> diff --git a/drivers/usb/host/ehci-ppc-of.c b/drivers/usb/host/ehci-ppc-of.c
> index 576f7d79ad4e..9d17e0695e35 100644
> --- a/drivers/usb/host/ehci-ppc-of.c
> +++ b/drivers/usb/host/ehci-ppc-of.c
> @@ -31,7 +31,7 @@ static const struct hc_driver ehci_ppc_of_hc_driver = {
>* generic hardw
On Fri, Aug 9, 2019 at 10:52 PM Alan Stern wrote:
>
> On Fri, 9 Aug 2019, syzbot wrote:
>
> > Hello,
> >
> > syzbot has tested the proposed patch and the reproducer did not trigger
> > crash:
> >
> > Reported-and-tested-by:
> > syzbot+22ae4e3b9fcc8a5c1...@syzkaller.appspotmail.com
> >
> > Tested o
On Fri, Aug 9, 2019 at 3:18 PM syzbot
wrote:
>
> Hello,
>
> syzbot found the following crash on:
>
> HEAD commit:e96407b4 usb-fuzzer: main usb gadget fuzzer driver
> git tree: https://github.com/google/kasan.git usb-fuzzer
> console output: https://syzkaller.appspot.com/x/log.txt?x=10fbd
On Thu, Aug 8, 2019 at 2:38 PM syzbot
wrote:
>
> Hello,
>
> syzbot found the following crash on:
>
> HEAD commit:e96407b4 usb-fuzzer: main usb gadget fuzzer driver
> git tree: https://github.com/google/kasan.git usb-fuzzer
> console output: https://syzkaller.appspot.com/x/log.txt?x=13aea
On Fri, Aug 9, 2019 at 6:51 PM Alan Stern wrote:
>
> Greg:
>
> See below...
>
> On Fri, 9 Aug 2019, syzbot wrote:
>
> > Hello,
> >
> > syzbot found the following crash on:
> >
> > HEAD commit:e96407b4 usb-fuzzer: main usb gadget fuzzer driver
> > git tree: https://github.com/google/kasan
On Thu, Aug 1, 2019 at 5:28 PM syzbot
wrote:
>
> Hello,
>
> syzbot found the following crash on:
>
> HEAD commit:7f7867ff usb-fuzzer: main usb gadget fuzzer driver
> git tree: https://github.com/google/kasan.git usb-fuzzer
> console output: https://syzkaller.appspot.com/x/log.txt?x=17ab6
On Fri, Aug 9, 2019 at 9:32 PM Alan Stern wrote:
>
> On Fri, 9 Aug 2019, syzbot wrote:
>
> > syzbot has found a reproducer for the following crash on:
> >
> > HEAD commit:e96407b4 usb-fuzzer: main usb gadget fuzzer driver
> > git tree: https://github.com/google/kasan.git usb-fuzzer
> > c
Hello,
syzbot found the following crash on:
HEAD commit:e96407b4 usb-fuzzer: main usb gadget fuzzer driver
git tree: https://github.com/google/kasan.git usb-fuzzer
console output: https://syzkaller.appspot.com/x/log.txt?x=1046c6ee60
kernel config: https://syzkaller.appspot.com/x/.
Hello,
syzbot found the following crash on:
HEAD commit:e96407b4 usb-fuzzer: main usb gadget fuzzer driver
git tree: https://github.com/google/kasan.git usb-fuzzer
console output: https://syzkaller.appspot.com/x/log.txt?x=1535640260
kernel config: https://syzkaller.appspot.com/x/.
Hello,
syzbot found the following crash on:
HEAD commit:e96407b4 usb-fuzzer: main usb gadget fuzzer driver
git tree: https://github.com/google/kasan.git usb-fuzzer
console output: https://syzkaller.appspot.com/x/log.txt?x=1327f2ee60
kernel config: https://syzkaller.appspot.com/x/.
Hello,
syzbot found the following crash on:
HEAD commit:e96407b4 usb-fuzzer: main usb gadget fuzzer driver
git tree: https://github.com/google/kasan.git usb-fuzzer
console output: https://syzkaller.appspot.com/x/log.txt?x=162aac0260
kernel config: https://syzkaller.appspot.com/x/.
Hello,
syzbot found the following crash on:
HEAD commit:e96407b4 usb-fuzzer: main usb gadget fuzzer driver
git tree: https://github.com/google/kasan.git usb-fuzzer
console output: https://syzkaller.appspot.com/x/log.txt?x=13e270e260
kernel config: https://syzkaller.appspot.com/x/.
Hello,
syzbot found the following crash on:
HEAD commit:e96407b4 usb-fuzzer: main usb gadget fuzzer driver
git tree: https://github.com/google/kasan.git usb-fuzzer
console output: https://syzkaller.appspot.com/x/log.txt?x=1390791c60
kernel config: https://syzkaller.appspot.com/x/.
On Mon, Aug 12, 2019 at 2:18 PM syzbot
wrote:
>
> Hello,
>
> syzbot found the following crash on:
>
> HEAD commit:e96407b4 usb-fuzzer: main usb gadget fuzzer driver
> git tree: https://github.com/google/kasan.git usb-fuzzer
> console output: https://syzkaller.appspot.com/x/log.txt?x=1327
On Mon, Aug 12, 2019 at 2:18 PM syzbot
wrote:
>
> Hello,
>
> syzbot found the following crash on:
>
> HEAD commit:e96407b4 usb-fuzzer: main usb gadget fuzzer driver
> git tree: https://github.com/google/kasan.git usb-fuzzer
> console output: https://syzkaller.appspot.com/x/log.txt?x=162a
On Mon, Aug 12, 2019 at 2:18 PM syzbot
wrote:
>
> Hello,
>
> syzbot found the following crash on:
>
> HEAD commit:e96407b4 usb-fuzzer: main usb gadget fuzzer driver
> git tree: https://github.com/google/kasan.git usb-fuzzer
> console output: https://syzkaller.appspot.com/x/log.txt?x=1390
Hello,
syzbot has tested the proposed patch and the reproducer did not trigger
crash:
Reported-and-tested-by:
syzbot+a64a382964bf6c71a...@syzkaller.appspotmail.com
Tested on:
commit: e96407b4 usb-fuzzer: main usb gadget fuzzer driver
git tree: https://github.com/google/kasa
On Thu, Jul 25, 2019 at 7:04 AM syzbot
wrote:
>
> syzbot has found a reproducer for the following crash on:
>
> HEAD commit:6a3599ce usb-fuzzer: main usb gadget fuzzer driver
> git tree: https://github.com/google/kasan.git usb-fuzzer
> console output: https://syzkaller.appspot.com/x/log.
On Thu, 2019-08-08 at 15:07 +0530, Nagarjuna Kristam wrote:
> This patch adds UDC driver for tegra XUSB 3.0 device mode controller.
> XUSB device mode controller supports SS, HS and FS modes
>
> Based on work by:
> Mark Kuo
> Hui Fu
> Andrew Bresticker
>
> Signed-off-by: Nagarjuna Krista
Hi,
Roger Quadros writes:
>> The sysfs file we expose from the class for the role switches is
>> primarily meant for supporting proprietary protocols that require us
>> to basically override the connector USB data role. The default role
>> should always be selected in the drivers.
>
> OK. Let's
On Tue, Jul 30, 2019 at 6:58 PM syzbot
wrote:
>
> syzbot has found a reproducer for the following crash on:
>
> HEAD commit:7f7867ff usb-fuzzer: main usb gadget fuzzer driver
> git tree: https://github.com/google/kasan.git usb-fuzzer
> console output: https://syzkaller.appspot.com/x/log.
On Thu, Aug 8, 2019 at 2:38 PM syzbot
wrote:
>
> Hello,
>
> syzbot found the following crash on:
>
> HEAD commit:e96407b4 usb-fuzzer: main usb gadget fuzzer driver
> git tree: https://github.com/google/kasan.git usb-fuzzer
> console output: https://syzkaller.appspot.com/x/log.txt?x=16000
Hi,
Chunfeng Yun writes:
>> +/* XUSB_DEV registers */
>> +#define SPARAM 0x000
>> +#define SPARAM_ERSTMAX_SHIFT 16
>> +#define SPARAM_ERSTMAX_MASK GENMASK(4, 0)
>> +#define DB 0x004
>> +#define DB_TARGET_SHIFT 8
>> +#define DB_TARGET_MASK GENMASK(7, 0)
>> +#define DB_STREAMID_SHIFT 16
>> +#
Hello,
syzbot has tested the proposed patch and the reproducer did not trigger
crash:
Reported-and-tested-by:
syzbot+3cbe5cd105d2ad56a...@syzkaller.appspotmail.com
Tested on:
commit: 6a3599ce usb-fuzzer: main usb gadget fuzzer driver
git tree: https://github.com/google/kasa
On Mon, 2019-08-12 at 15:49 +0300, Felipe Balbi wrote:
> Hi,
>
> Chunfeng Yun writes:
> >> +/* XUSB_DEV registers */
> >> +#define SPARAM 0x000
> >> +#define SPARAM_ERSTMAX_SHIFT 16
> >> +#define SPARAM_ERSTMAX_MASK GENMASK(4, 0)
> >> +#define DB 0x004
> >> +#define DB_TARGET_SHIFT 8
> >> +#de
Hello,
syzbot has tested the proposed patch but the reproducer still triggered
crash:
KASAN: invalid-free in hcd_buffer_free
usb 5-1: USB disconnect, device number 2
==
BUG: KASAN: double-free or invalid-free in hcd_buffer_free+0
On 12/08/2019 15:46, Felipe Balbi wrote:
>
> Hi,
>
> Roger Quadros writes:
>>> The sysfs file we expose from the class for the role switches is
>>> primarily meant for supporting proprietary protocols that require us
>>> to basically override the connector USB data role. The default role
>>>
On Sun, 2019-08-11 at 06:11 +0100, Sean Young wrote:
> syzbot reports an error on flush_request_modules() for the second device.
> This workqueue was never initialised so simply remove the offending line.
>
> usb 1-1: USB disconnect, device number 2
> em28xx 1-1:1.153: Disconnecting em28xx #1
> --
On Mon, Aug 12, 2019 at 03:24:52PM +0800, Rick Tseng wrote:
> From: Rick
>
> NVIDIA 3.1 xHCI card would lose power when moving power state into D3Cold.
> Thus we need to wait CNR bit to clear when xhci resmue as xhci init.
>
> Signed-off-by: Rick
We need a "full" name on the from and signed-of
On Mon, 12 Aug 2019, Felipe Balbi wrote:
> I don't understand the intricacies of the coherent API to judge if it's
> a bug in the API itself. In any case, here's where the splat comes from:
>
> void dma_free_attrs(struct device *dev, size_t size, void *cpu_addr,
> dma_addr_t dma_han
On Mon, 12 Aug 2019, Andrey Konovalov wrote:
> Alan, could you submit this patch (if you haven't already)? Looks like
> it fixes this bug (and might fix some others).
I will. I was waiting to see if Greg KH had any comments.
Alan Stern
> > drivers/usb/core/file.c | 10 +-
> > 1 fil
On Mon, Aug 12, 2019 at 3:03 PM syzbot
wrote:
>
> Hello,
>
> syzbot has tested the proposed patch but the reproducer still triggered
> crash:
> KASAN: invalid-free in hcd_buffer_free
>
> usb 5-1: USB disconnect, device number 2
> ==
>
On Sat, Aug 3, 2019 at 11:12 AM Hillf Danton wrote:
On Fri, 02 Aug 2019 05:58:05 -0700
> Hello,
>
> syzbot found the following crash on:
>
> HEAD commit:e96407b4 usb-fuzzer: main usb gadget fuzzer driver
> git tree: https://github.com/google/kasan.git usb-fuzzer
> console output:
On Sat, Aug 3, 2019 at 11:12 AM Hillf Danton wrote:
>
>
> On Fri, 02 Aug 2019 05:58:05 -0700
> > Hello,
> >
> > syzbot found the following crash on:
> >
> > HEAD commit:e96407b4 usb-fuzzer: main usb gadget fuzzer driver
> > git tree: https://github.com/google/kasan.git usb-fuzzer
> > con
On Mon, Aug 12, 2019 at 4:27 PM syzbot
wrote:
>
> > On Sat, Aug 3, 2019 at 11:12 AM Hillf Danton wrote:
>
>
> >> On Fri, 02 Aug 2019 05:58:05 -0700
> >> > Hello,
> >> >
> >> > syzbot found the following crash on:
> >> >
> >> > HEAD commit:e96407b4 usb-fuzzer: main usb gadget fuzzer driver
> >
On Fri, Aug 9, 2019 at 8:12 PM syzbot
wrote:
>
> Hello,
>
> syzbot has tested the proposed patch and the reproducer did not trigger
> crash:
>
> Reported-and-tested-by:
> syzbot+ef5de9c4f99c4edb4...@syzkaller.appspotmail.com
OK, I'm duping this BUG to the similar one that Hillf fixed:
#syz dup:
On Mon, Aug 12, 2019 at 10:21:14AM -0400, Alan Stern wrote:
> On Mon, 12 Aug 2019, Andrey Konovalov wrote:
>
> > Alan, could you submit this patch (if you haven't already)? Looks like
> > it fixes this bug (and might fix some others).
>
> I will. I was waiting to see if Greg KH had any comments.
On Mon, Aug 12, 2019 at 01:00:15PM +0300, Felipe Balbi wrote:
>
> Hi Greg,
>
> here's a pull request for some fixes that I collected from linux-usb
> mailing list.
>
> Let me know if you want anything to be changed.
>
> Cheers
>
> The following changes since commit d45331b00ddb179e291766617259
Hi Ajay,
On Mon, Aug 05, 2019 at 11:24:13AM -0700, Ajay Gupta wrote:
> From: Ajay Gupta
>
> CCGx controller used on NVIDIA GPU card has two separate display
> altmode for two DP pin assignments. UCSI specification doesn't
> prohibits using separate display altmode.
>
> Current UCSI Type-C frame
On Mon, Aug 12, 2019 at 4:47 PM Hillf Danton wrote:
>
>
> Hi Andrey
>
> On Mon, 12 Aug 2019 06:03:01 -0700
> > Hello,
> >
> > syzbot has tested the proposed patch but the reproducer still triggered
> > crash:
> > KASAN: invalid-free in hcd_buffer_free
> >
> > usb 5-1: USB disconnect, device number
On 05/08/2019 13:48:42-0500, Gustavo A. R. Silva wrote:
> Mark switch cases where we are expecting to fall through.
>
> This patch fixes the following warning (Building: at91_dt_defconfig arm):
>
> drivers/usb/gadget/udc/atmel_usba_udc.c:329:13: warning: this statement may
> fall through [-Wimpl
Hello,
syzbot has tested the proposed patch and the reproducer did not trigger
crash:
Reported-and-tested-by:
syzbot+3cbe5cd105d2ad56a...@syzkaller.appspotmail.com
Tested on:
commit: 7f7867ff usb-fuzzer: main usb gadget fuzzer driver
git tree: https://github.com/google/kasa
On Fri, Aug 09, 2019 at 12:51:00PM -0400, Alan Stern wrote:
> Greg:
>
> See below...
>
> On Fri, 9 Aug 2019, syzbot wrote:
>
> > Hello,
> >
> > syzbot found the following crash on:
> >
> > HEAD commit:e96407b4 usb-fuzzer: main usb gadget fuzzer driver
> > git tree: https://github.com
The syzbot fuzzer has found two (!) races in the USB character device
registration and deregistration routines. This patch fixes the races.
The first race results from the fact that usb_deregister_dev() sets
usb_minors[intf->minor] to NULL before calling device_destroy() on the
class device. Thi
On Mon, Aug 12, 2019 at 04:11:07PM -0400, Alan Stern wrote:
> The syzbot fuzzer has found two (!) races in the USB character device
> registration and deregistration routines. This patch fixes the races.
>
> The first race results from the fact that usb_deregister_dev() sets
> usb_minors[intf->mi
Justin,
>> Attached 2 x brand new Western Digital 8TB USB 3.0 drives awhile back
>> and ran some file copy tests and was getting these warnings-- is
>> there any way to avoid these warnings? I did confirm with parted
>> that the partition was aligned but this appears to be something
>> related
Replace kmalloc_node() with alloc_pages() for rx buffer.
Signed-off-by: Hayes Wang
---
drivers/net/usb/r8152.c | 31 +++
1 file changed, 11 insertions(+), 20 deletions(-)
diff --git a/drivers/net/usb/r8152.c b/drivers/net/usb/r8152.c
index d063c9b358e5..f41cb728e999
Let the rx_copybreak and rx_pending could be modified by
ethtool.
Signed-off-by: Hayes Wang
---
drivers/net/usb/r8152.c | 91 ++---
1 file changed, 86 insertions(+), 5 deletions(-)
diff --git a/drivers/net/usb/r8152.c b/drivers/net/usb/r8152.c
index 2ae04522c
The different chips may accept different rx buffer sizes. The RTL8152
supports 16K bytes, and RTL8153 support 32K bytes.
Signed-off-by: Hayes Wang
---
drivers/net/usb/r8152.c | 12
1 file changed, 8 insertions(+), 4 deletions(-)
diff --git a/drivers/net/usb/r8152.c b/drivers/net/us
Use skb_add_rx_frag() to reduce the memory copy for rx data.
Use a new list of rx_used to store the rx buffer which couldn't be
reused yet.
Besides, the total number of rx buffer may be increased or decreased
dynamically. And it is limited by RTL8152_MAX_RX_AGG.
Signed-off-by: Hayes Wang
---
d
The original method uses an array to store the rx information. The
new one uses a list to link each rx structure. Then, it is possible
to increase/decrease the number of rx structure dynamically.
Signed-off-by: Hayes Wang
---
drivers/net/usb/r8152.c | 182 +++-
v2:
For patch #2, replace list_for_each_safe with list_for_each_entry_safe.
Remove unlikely in WARN_ON. Adjust the coding style.
For patch #4, replace list_for_each_safe with list_for_each_entry_safe.
Remove "else" after "continue".
For patch #5. replace sysfs with ethtool to modify rx_copybreak
On 2019/08/12 19:12, Martin K. Petersen wrote:
>
> Justin,
>
>>> Attached 2 x brand new Western Digital 8TB USB 3.0 drives awhile back
>>> and ran some file copy tests and was getting these warnings-- is
>>> there any way to avoid these warnings? I did confirm with parted
>>> that the partition
Hi,
Roger Quadros writes:
>> Roger Quadros writes:
The sysfs file we expose from the class for the role switches is
primarily meant for supporting proprietary protocols that require us
to basically override the connector USB data role. The default role
should always be sele
On Mon, Aug 12, 2019 at 06:08:43PM -0600, Nick Crews wrote:
> Hi Greg!
Hi!
First off, please fix your email client to not send html so that vger
does not reject your messages :)
> I am working on a Chrome OS device that supports a policy called "USB Power
> Share," which allows users to turn the
Hi Mathias,
at 21:24, Kai-Heng Feng wrote:
at 22:45, Mathias Nyman wrote:
[snipped]
Yes, disabling runtime PM can workaround this issue.
What’s next step here? Is it a firmware bug?
Kai-Heng
Kai-Heng
-Mathias
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