* [PATCH] dma-buf/udmabuf: avoid oversized kvmalloc in init_udmabuf()
@ 2026-09-18 1:34 Jiakai Xu
2026-09-18 10:17 ` Christian König
0 siblings, 1 reply; 3+ messages in thread
From: Jiakai Xu @ 2026-09-18 1:34 UTC (permalink / raw)
To: Gerd Hoffmann, Vivek Kasireddy, Sumit Semwal,
Christian König, dri-devel
Cc: Huan Yang, Robert Mader, linux-media, linaro-mm-sig,
linux-kernel, Jiakai Xu
init_udmabuf() allocates two pointer arrays with one entry per page of
the created buffer. Since commit 1c0844c6184e ("udmabuf: change folios
array from kmalloc to kvmalloc") these arrays are allocated with
kvmalloc(), which warns and fails when the requested size exceeds
INT_MAX bytes.
With the default size limit of 64 MB the largest possible request was
far below that threshold, but commit 44e9eb5a7621 ("dma-buf/udmabuf:
Disable the size limit by default") raised the limit to INT_MAX MB.
With 4K pages, creating a buffer of more than INT_MAX / 8 pages (about
1 TB of pinned memory) now makes kvmalloc() hit its "crazy size"
WARN_ON_ONCE(), which is trivially triggerable from unprivileged users
through the UDMABUF_CREATE ioctls:
WARNING: CPU: 0 PID: 412 at mm/slub.c:7021 __kvmalloc_node_noprof
Call Trace:
udmabuf_create
udmabuf_ioctl_create_list
Fix it by rejecting buffers whose page count exceeds what the pointer
arrays can address before calling init_udmabuf(), returning -EINVAL.
Fixes: 1c0844c6184e ("udmabuf: change folios array from kmalloc to kvmalloc")
Fixes: 44e9eb5a7621 ("dma-buf/udmabuf: Disable the size limit by default")
Signed-off-by: Jiakai Xu <xujiakai24@mails.ucas.ac.cn>
---
drivers/dma-buf/udmabuf.c | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/drivers/dma-buf/udmabuf.c b/drivers/dma-buf/udmabuf.c
index df6dd00462423..25984e75d7ff3 100644
--- a/drivers/dma-buf/udmabuf.c
+++ b/drivers/dma-buf/udmabuf.c
@@ -383,6 +383,14 @@ static long udmabuf_create(struct miscdevice *device,
if (!pgcnt)
goto err_noinit;
+ /*
+ * init_udmabuf() allocates two arrays of pointers, one entry per
+ * page, with kvmalloc(), which cannot handle sizes larger than
+ * INT_MAX bytes.
+ */
+ if (pgcnt > INT_MAX / sizeof(struct page *))
+ goto err_noinit;
+
ret = init_udmabuf(ubuf, pgcnt);
if (ret)
goto err;
--
2.34.1
--
Below is the crash report:
------------[ cut here ]------------
WARNING: mm/slub.c:7013 at __kvmalloc_node_noprof+0x516/0x5d0 home/zzzrrll/tmp/kf_src/linux-7.3-rc2/mm/slub.c:7013, CPU#0: syz.5.27938/167363
Modules linked in:
CPU: 0 UID: 0 PID: 167363 Comm: syz.5.27938 Tainted: G W L 7.3.0-rc2 #1 PREEMPT(full)
Tainted: [W]=WARN, [L]=SOFTLOCKUP
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.15.0-1 04/01/2014
RIP: 0010:__kvmalloc_node_noprof+0x516/0x5d0 home/zzzrrll/tmp/kf_src/linux-7.3-rc2/mm/slub.c:7013
Code: 05 bf fa 2d 08 49 8b 0f c6 04 08 00 65 48 ff 0d 90 fa 2d 08 0f 85 4c fd ff ff e8 05 43 8c ff e9 42 fd ff ff e8 9b 86 0e 04 90 <0f> 0b 90 31 db e9 d2 fe ff ff f3 0f 1e fa 65 8b 05 8d fa 2d 08 89
RSP: 0018:ffffc90002bc3cf8 EFLAGS: 00010246
RAX: 0000000000000100 RBX: 0000000000000000 RCX: 0000008000000000
RDX: 0000008000000000 RSI: 0000000000000000 RDI: ffffffff835e3226
RBP: 00000000ffffffff R08: 00000000000028c0 R09: 00000000ffffffff
R10: 0000000000000006 R11: 0000000000000002 R12: 0000008000000000
R13: 00000000000028c0 R14: 0000001000000000 R15: 0000008000000000
FS: 00007fc89ae45640(0000) GS:ffff8880f3de4000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c2ff305 CR3: 000000002b3d4000 CR4: 0000000000752ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000006000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
PKRU: 80000000
Call Trace:
<TASK>
init_udmabuf home/zzzrrll/tmp/kf_src/linux-7.3-rc2/drivers/dma-buf/udmabuf.c:193 [inline]
udmabuf_create+0x1b6/0x750 home/zzzrrll/tmp/kf_src/linux-7.3-rc2/drivers/dma-buf/udmabuf.c:386
udmabuf_ioctl_create home/zzzrrll/tmp/kf_src/linux-7.3-rc2/drivers/dma-buf/udmabuf.c:465 [inline]
udmabuf_ioctl+0x132/0x1d0 home/zzzrrll/tmp/kf_src/linux-7.3-rc2/drivers/dma-buf/udmabuf.c:496
vfs_ioctl home/zzzrrll/tmp/kf_src/linux-7.3-rc2/fs/ioctl.c:51 [inline]
__do_sys_ioctl home/zzzrrll/tmp/kf_src/linux-7.3-rc2/fs/ioctl.c:597 [inline]
__se_sys_ioctl+0xbc/0x130 home/zzzrrll/tmp/kf_src/linux-7.3-rc2/fs/ioctl.c:583
do_syscall_x64 home/zzzrrll/tmp/kf_src/linux-7.3-rc2/arch/x86/entry/syscall_64.c:61 [inline]
do_syscall_64+0x12b/0x350 home/zzzrrll/tmp/kf_src/linux-7.3-rc2/arch/x86/entry/syscall_64.c:84
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x590d6d
Code: 02 b8 ff ff ff ff c3 66 0f 1f 44 00 00 f3 0f 1e fa 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fc89ae44fd8 EFLAGS: 00000216 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 0000000000611e7f RCX: 0000000000590d6d
RDX: 00002000000023c0 RSI: 0000000040187542 RDI: 000000000000000a
RBP: 00007fc89ae45010 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000216 R12: 00007fc89ae45640
R13: 000000000000000b R14: 0000000000528d40 R15: 00007fc89ae25000
</TASK>
---[ end trace 0000000000000000 ]---
---
^ permalink raw reply [flat|nested] 3+ messages in thread* Re: [PATCH] dma-buf/udmabuf: avoid oversized kvmalloc in init_udmabuf()
2026-09-18 1:34 [PATCH] dma-buf/udmabuf: avoid oversized kvmalloc in init_udmabuf() Jiakai Xu
@ 2026-09-18 10:17 ` Christian König
2026-09-19 8:21 ` Kasireddy, Vivek
0 siblings, 1 reply; 3+ messages in thread
From: Christian König @ 2026-09-18 10:17 UTC (permalink / raw)
To: Jiakai Xu, Gerd Hoffmann, Vivek Kasireddy, Sumit Semwal, dri-devel
Cc: Huan Yang, Robert Mader, linux-media, linaro-mm-sig, linux-kernel
On 9/18/26 03:34, Jiakai Xu wrote:
> init_udmabuf() allocates two pointer arrays with one entry per page of
> the created buffer. Since commit 1c0844c6184e ("udmabuf: change folios
> array from kmalloc to kvmalloc") these arrays are allocated with
> kvmalloc(), which warns and fails when the requested size exceeds
> INT_MAX bytes.
>
> With the default size limit of 64 MB the largest possible request was
> far below that threshold, but commit 44e9eb5a7621 ("dma-buf/udmabuf:
> Disable the size limit by default") raised the limit to INT_MAX MB.
> With 4K pages, creating a buffer of more than INT_MAX / 8 pages (about
> 1 TB of pinned memory) now makes kvmalloc() hit its "crazy size"
> WARN_ON_ONCE(), which is trivially triggerable from unprivileged users
> through the UDMABUF_CREATE ioctls:
>
> WARNING: CPU: 0 PID: 412 at mm/slub.c:7021 __kvmalloc_node_noprof
> Call Trace:
> udmabuf_create
> udmabuf_ioctl_create_list
>
> Fix it by rejecting buffers whose page count exceeds what the pointer
> arrays can address before calling init_udmabuf(), returning -EINVAL.
I was already wondering if we won't hit some allocation limit when we drop the general limit.
Please don't add any new check, but rather give a reasonable default size limit.
>
> Fixes: 1c0844c6184e ("udmabuf: change folios array from kmalloc to kvmalloc")
> Fixes: 44e9eb5a7621 ("dma-buf/udmabuf: Disable the size limit by default")
Two fixes tags usually doesn't make much sense.
Regards,
Christian.
> Signed-off-by: Jiakai Xu <xujiakai24@mails.ucas.ac.cn>
> ---
> drivers/dma-buf/udmabuf.c | 8 ++++++++
> 1 file changed, 8 insertions(+)
>
> diff --git a/drivers/dma-buf/udmabuf.c b/drivers/dma-buf/udmabuf.c
> index df6dd00462423..25984e75d7ff3 100644
> --- a/drivers/dma-buf/udmabuf.c
> +++ b/drivers/dma-buf/udmabuf.c
> @@ -383,6 +383,14 @@ static long udmabuf_create(struct miscdevice *device,
> if (!pgcnt)
> goto err_noinit;
>
> + /*
> + * init_udmabuf() allocates two arrays of pointers, one entry per
> + * page, with kvmalloc(), which cannot handle sizes larger than
> + * INT_MAX bytes.
> + */
> + if (pgcnt > INT_MAX / sizeof(struct page *))
> + goto err_noinit;
> +
> ret = init_udmabuf(ubuf, pgcnt);
> if (ret)
> goto err;
> --
> 2.34.1
>
>
> --
> Below is the crash report:
> ------------[ cut here ]------------
> WARNING: mm/slub.c:7013 at __kvmalloc_node_noprof+0x516/0x5d0 home/zzzrrll/tmp/kf_src/linux-7.3-rc2/mm/slub.c:7013, CPU#0: syz.5.27938/167363
> Modules linked in:
> CPU: 0 UID: 0 PID: 167363 Comm: syz.5.27938 Tainted: G W L 7.3.0-rc2 #1 PREEMPT(full)
> Tainted: [W]=WARN, [L]=SOFTLOCKUP
> Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.15.0-1 04/01/2014
> RIP: 0010:__kvmalloc_node_noprof+0x516/0x5d0 home/zzzrrll/tmp/kf_src/linux-7.3-rc2/mm/slub.c:7013
> Code: 05 bf fa 2d 08 49 8b 0f c6 04 08 00 65 48 ff 0d 90 fa 2d 08 0f 85 4c fd ff ff e8 05 43 8c ff e9 42 fd ff ff e8 9b 86 0e 04 90 <0f> 0b 90 31 db e9 d2 fe ff ff f3 0f 1e fa 65 8b 05 8d fa 2d 08 89
> RSP: 0018:ffffc90002bc3cf8 EFLAGS: 00010246
> RAX: 0000000000000100 RBX: 0000000000000000 RCX: 0000008000000000
> RDX: 0000008000000000 RSI: 0000000000000000 RDI: ffffffff835e3226
> RBP: 00000000ffffffff R08: 00000000000028c0 R09: 00000000ffffffff
> R10: 0000000000000006 R11: 0000000000000002 R12: 0000008000000000
> R13: 00000000000028c0 R14: 0000001000000000 R15: 0000008000000000
> FS: 00007fc89ae45640(0000) GS:ffff8880f3de4000(0000) knlGS:0000000000000000
> CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
> CR2: 000000110c2ff305 CR3: 000000002b3d4000 CR4: 0000000000752ef0
> DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000006000
> DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
> PKRU: 80000000
> Call Trace:
> <TASK>
> init_udmabuf home/zzzrrll/tmp/kf_src/linux-7.3-rc2/drivers/dma-buf/udmabuf.c:193 [inline]
> udmabuf_create+0x1b6/0x750 home/zzzrrll/tmp/kf_src/linux-7.3-rc2/drivers/dma-buf/udmabuf.c:386
> udmabuf_ioctl_create home/zzzrrll/tmp/kf_src/linux-7.3-rc2/drivers/dma-buf/udmabuf.c:465 [inline]
> udmabuf_ioctl+0x132/0x1d0 home/zzzrrll/tmp/kf_src/linux-7.3-rc2/drivers/dma-buf/udmabuf.c:496
> vfs_ioctl home/zzzrrll/tmp/kf_src/linux-7.3-rc2/fs/ioctl.c:51 [inline]
> __do_sys_ioctl home/zzzrrll/tmp/kf_src/linux-7.3-rc2/fs/ioctl.c:597 [inline]
> __se_sys_ioctl+0xbc/0x130 home/zzzrrll/tmp/kf_src/linux-7.3-rc2/fs/ioctl.c:583
> do_syscall_x64 home/zzzrrll/tmp/kf_src/linux-7.3-rc2/arch/x86/entry/syscall_64.c:61 [inline]
> do_syscall_64+0x12b/0x350 home/zzzrrll/tmp/kf_src/linux-7.3-rc2/arch/x86/entry/syscall_64.c:84
> entry_SYSCALL_64_after_hwframe+0x77/0x7f
> RIP: 0033:0x590d6d
> Code: 02 b8 ff ff ff ff c3 66 0f 1f 44 00 00 f3 0f 1e fa 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
> RSP: 002b:00007fc89ae44fd8 EFLAGS: 00000216 ORIG_RAX: 0000000000000010
> RAX: ffffffffffffffda RBX: 0000000000611e7f RCX: 0000000000590d6d
> RDX: 00002000000023c0 RSI: 0000000040187542 RDI: 000000000000000a
> RBP: 00007fc89ae45010 R08: 0000000000000000 R09: 0000000000000000
> R10: 0000000000000000 R11: 0000000000000216 R12: 00007fc89ae45640
> R13: 000000000000000b R14: 0000000000528d40 R15: 00007fc89ae25000
> </TASK>
> ---[ end trace 0000000000000000 ]---
> ---
>
^ permalink raw reply [flat|nested] 3+ messages in thread* RE: [PATCH] dma-buf/udmabuf: avoid oversized kvmalloc in init_udmabuf()
2026-09-18 10:17 ` Christian König
@ 2026-09-19 8:21 ` Kasireddy, Vivek
0 siblings, 0 replies; 3+ messages in thread
From: Kasireddy, Vivek @ 2026-09-19 8:21 UTC (permalink / raw)
To: Christian König, Jiakai Xu, Gerd Hoffmann, Sumit Semwal, dri-devel
Cc: Huan Yang, Robert Mader, linux-media, linaro-mm-sig, linux-kernel
Hi Christian,
> Subject: Re: [PATCH] dma-buf/udmabuf: avoid oversized kvmalloc in
> init_udmabuf()
>
> On 9/18/26 03:34, Jiakai Xu wrote:
> > init_udmabuf() allocates two pointer arrays with one entry per page
> of
> > the created buffer. Since commit 1c0844c6184e ("udmabuf: change
> folios
> > array from kmalloc to kvmalloc") these arrays are allocated with
> > kvmalloc(), which warns and fails when the requested size exceeds
> > INT_MAX bytes.
> >
> > With the default size limit of 64 MB the largest possible request was
> > far below that threshold, but commit 44e9eb5a7621 ("dma-
> buf/udmabuf:
> > Disable the size limit by default") raised the limit to INT_MAX MB.
> > With 4K pages, creating a buffer of more than INT_MAX / 8 pages
> (about
> > 1 TB of pinned memory) now makes kvmalloc() hit its "crazy size"
> > WARN_ON_ONCE(), which is trivially triggerable from unprivileged
> users
> > through the UDMABUF_CREATE ioctls:
> >
> > WARNING: CPU: 0 PID: 412 at mm/slub.c:7021
> __kvmalloc_node_noprof
> > Call Trace:
> > udmabuf_create
> > udmabuf_ioctl_create_list
> >
> > Fix it by rejecting buffers whose page count exceeds what the pointer
> > arrays can address before calling init_udmabuf(), returning -EINVAL.
>
> I was already wondering if we won't hit some allocation limit when we
> drop the general limit.
>
> Please don't add any new check, but rather give a reasonable default
> size limit.
My preferred solution to address this issue is to add mlock accounting:
https://lore.kernel.org/dri-devel/20260831060210.1713177-1-vivek.kasireddy@intel.com/
Do you think this approach (mlock accounting) makes sense?
Thanks,
Vivek
>
> >
> > Fixes: 1c0844c6184e ("udmabuf: change folios array from kmalloc to
> kvmalloc")
> > Fixes: 44e9eb5a7621 ("dma-buf/udmabuf: Disable the size limit by
> default")
>
> Two fixes tags usually doesn't make much sense.
>
> Regards,
> Christian.
>
> > Signed-off-by: Jiakai Xu <xujiakai24@mails.ucas.ac.cn>
> > ---
> > drivers/dma-buf/udmabuf.c | 8 ++++++++
> > 1 file changed, 8 insertions(+)
> >
> > diff --git a/drivers/dma-buf/udmabuf.c b/drivers/dma-buf/udmabuf.c
> > index df6dd00462423..25984e75d7ff3 100644
> > --- a/drivers/dma-buf/udmabuf.c
> > +++ b/drivers/dma-buf/udmabuf.c
> > @@ -383,6 +383,14 @@ static long udmabuf_create(struct miscdevice
> *device,
> > if (!pgcnt)
> > goto err_noinit;
> >
> > + /*
> > + * init_udmabuf() allocates two arrays of pointers, one entry per
> > + * page, with kvmalloc(), which cannot handle sizes larger than
> > + * INT_MAX bytes.
> > + */
> > + if (pgcnt > INT_MAX / sizeof(struct page *))
> > + goto err_noinit;
> > +
> > ret = init_udmabuf(ubuf, pgcnt);
> > if (ret)
> > goto err;
> > --
> > 2.34.1
> >
> >
> > --
> > Below is the crash report:
> > ------------[ cut here ]------------
> > WARNING: mm/slub.c:7013 at __kvmalloc_node_noprof+0x516/0x5d0
> home/zzzrrll/tmp/kf_src/linux-7.3-rc2/mm/slub.c:7013, CPU#0:
> syz.5.27938/167363
> > Modules linked in:
> > CPU: 0 UID: 0 PID: 167363 Comm: syz.5.27938 Tainted: G W L
> 7.3.0-rc2 #1 PREEMPT(full)
> > Tainted: [W]=WARN, [L]=SOFTLOCKUP
> > Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.15.0-
> 1 04/01/2014
> > RIP: 0010:__kvmalloc_node_noprof+0x516/0x5d0
> home/zzzrrll/tmp/kf_src/linux-7.3-rc2/mm/slub.c:7013
> > Code: 05 bf fa 2d 08 49 8b 0f c6 04 08 00 65 48 ff 0d 90 fa 2d 08 0f 85
> 4c fd ff ff e8 05 43 8c ff e9 42 fd ff ff e8 9b 86 0e 04 90 <0f> 0b 90 31 db
> e9 d2 fe ff ff f3 0f 1e fa 65 8b 05 8d fa 2d 08 89
> > RSP: 0018:ffffc90002bc3cf8 EFLAGS: 00010246
> > RAX: 0000000000000100 RBX: 0000000000000000 RCX:
> 0000008000000000
> > RDX: 0000008000000000 RSI: 0000000000000000 RDI: ffffffff835e3226
> > RBP: 00000000ffffffff R08: 00000000000028c0 R09: 00000000ffffffff
> > R10: 0000000000000006 R11: 0000000000000002 R12:
> 0000008000000000
> > R13: 00000000000028c0 R14: 0000001000000000 R15:
> 0000008000000000
> > FS: 00007fc89ae45640(0000) GS:ffff8880f3de4000(0000)
> knlGS:0000000000000000
> > CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
> > CR2: 000000110c2ff305 CR3: 000000002b3d4000 CR4:
> 0000000000752ef0
> > DR0: 0000000000000000 DR1: 0000000000000000 DR2:
> 0000000000006000
> > DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7:
> 0000000000000400
> > PKRU: 80000000
> > Call Trace:
> > <TASK>
> > init_udmabuf home/zzzrrll/tmp/kf_src/linux-7.3-rc2/drivers/dma-
> buf/udmabuf.c:193 [inline]
> > udmabuf_create+0x1b6/0x750 home/zzzrrll/tmp/kf_src/linux-7.3-
> rc2/drivers/dma-buf/udmabuf.c:386
> > udmabuf_ioctl_create home/zzzrrll/tmp/kf_src/linux-7.3-
> rc2/drivers/dma-buf/udmabuf.c:465 [inline]
> > udmabuf_ioctl+0x132/0x1d0 home/zzzrrll/tmp/kf_src/linux-7.3-
> rc2/drivers/dma-buf/udmabuf.c:496
> > vfs_ioctl home/zzzrrll/tmp/kf_src/linux-7.3-rc2/fs/ioctl.c:51 [inline]
> > __do_sys_ioctl home/zzzrrll/tmp/kf_src/linux-7.3-rc2/fs/ioctl.c:597
> [inline]
> > __se_sys_ioctl+0xbc/0x130 home/zzzrrll/tmp/kf_src/linux-7.3-
> rc2/fs/ioctl.c:583
> > do_syscall_x64 home/zzzrrll/tmp/kf_src/linux-7.3-
> rc2/arch/x86/entry/syscall_64.c:61 [inline]
> > do_syscall_64+0x12b/0x350 home/zzzrrll/tmp/kf_src/linux-7.3-
> rc2/arch/x86/entry/syscall_64.c:84
> > entry_SYSCALL_64_after_hwframe+0x77/0x7f
> > RIP: 0033:0x590d6d
> > Code: 02 b8 ff ff ff ff c3 66 0f 1f 44 00 00 f3 0f 1e fa 48 89 f8 48 89 f7 48
> 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff
> 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
> > RSP: 002b:00007fc89ae44fd8 EFLAGS: 00000216 ORIG_RAX:
> 0000000000000010
> > RAX: ffffffffffffffda RBX: 0000000000611e7f RCX: 0000000000590d6d
> > RDX: 00002000000023c0 RSI: 0000000040187542 RDI:
> 000000000000000a
> > RBP: 00007fc89ae45010 R08: 0000000000000000 R09:
> 0000000000000000
> > R10: 0000000000000000 R11: 0000000000000216 R12:
> 00007fc89ae45640
> > R13: 000000000000000b R14: 0000000000528d40 R15:
> 00007fc89ae25000
> > </TASK>
> > ---[ end trace 0000000000000000 ]---
> > ---
> >
^ permalink raw reply [flat|nested] 3+ messages in thread
end of thread, other threads:[~2026-09-19 8:21 UTC | newest]
Thread overview: 3+ messages (download: mbox.gz / follow: Atom feed)
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2026-09-18 1:34 [PATCH] dma-buf/udmabuf: avoid oversized kvmalloc in init_udmabuf() Jiakai Xu
2026-09-18 10:17 ` Christian König
2026-09-19 8:21 ` Kasireddy, Vivek
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