Re: [kernel-hardening] [PATCH 09/38] usercopy: Mark kmalloc caches as usercopy caches

[PATCH v5 00/38] Hardened usercopy whitelisting · Kees Cook <hidden> · 2018-01-11
[PATCH 01/38] usercopy: Remove pointer from overflow report · Kees Cook <hidden> · 2018-01-11
[PATCH 02/38] usercopy: Enhance and rename report_usercopy() · Kees Cook <hidden> · 2018-01-11
Re: [PATCH 02/38] usercopy: Enhance and rename report_usercopy() · Christopher Lameter <hidden> · 2018-01-11
Re: [PATCH 02/38] usercopy: Enhance and rename report_usercopy() · Kees Cook <hidden> · 2018-01-14
[PATCH 03/38] usercopy: Include offset in hardened usercopy report · Kees Cook <hidden> · 2018-01-11
[PATCH 04/38] lkdtm/usercopy: Adjust test to include an offset to check reporting · Kees Cook <hidden> · 2018-01-11
[PATCH 05/38] stddef.h: Introduce sizeof_field() · Kees Cook <hidden> · 2018-01-11
[PATCH 06/38] usercopy: Prepare for usercopy whitelisting · Kees Cook <hidden> · 2018-01-11
[PATCH 07/38] usercopy: WARN() on slab cache usercopy region violations · Kees Cook <hidden> · 2018-01-11
[PATCH 08/38] usercopy: Allow strict enforcement of whitelists · Kees Cook <hidden> · 2018-01-11
[PATCH 09/38] usercopy: Mark kmalloc caches as usercopy caches · Kees Cook <hidden> · 2018-01-11
Re: [kernel-hardening] [PATCH 09/38] usercopy: Mark kmalloc caches as usercopy caches · Jiri Slaby <hidden> · 2019-11-12
Re: [kernel-hardening] [PATCH 09/38] usercopy: Mark kmalloc caches as usercopy caches · Kees Cook <hidden> · 2019-11-12
Re: [kernel-hardening] [PATCH 09/38] usercopy: Mark kmalloc caches as usercopy caches · Kees Cook <hidden> · 2019-11-15
Re: [kernel-hardening] [PATCH 09/38] usercopy: Mark kmalloc caches as usercopy caches · Jiri Slaby <hidden> · 2020-01-23
Re: [kernel-hardening] [PATCH 09/38] usercopy: Mark kmalloc caches as usercopy caches · Kees Cook <hidden> · 2020-01-27
Re: [kernel-hardening] [PATCH 09/38] usercopy: Mark kmalloc caches as usercopy caches · Christian Borntraeger <hidden> · 2020-01-28
Re: [kernel-hardening] [PATCH 09/38] usercopy: Mark kmalloc caches as usercopy caches · Kees Cook <hidden> · 2020-01-28
Re: [kernel-hardening] [PATCH 09/38] usercopy: Mark kmalloc caches as usercopy caches · Ursula Braun <hidden> · 2020-01-29
Re: [kernel-hardening] [PATCH 09/38] usercopy: Mark kmalloc caches as usercopy caches · Christopher Lameter <hidden> · 2020-01-29
Re: [kernel-hardening] [PATCH 09/38] usercopy: Mark kmalloc caches as usercopy caches · Christian Borntraeger <hidden> · 2020-01-29
Re: [kernel-hardening] [PATCH 09/38] usercopy: Mark kmalloc caches as usercopy caches · Christoph Hellwig <hch@infradead.org> · 2020-01-29
Re: [kernel-hardening] [PATCH 09/38] usercopy: Mark kmalloc caches as usercopy caches · Christian Borntraeger <hidden> · 2020-01-29
Re: [kernel-hardening] [PATCH 09/38] usercopy: Mark kmalloc caches as usercopy caches · Kees Cook <hidden> · 2020-01-30
Re: [kernel-hardening] [PATCH 09/38] usercopy: Mark kmalloc caches as usercopy caches · Jann Horn <jannh@google.com> · 2020-01-31
Re: [kernel-hardening] [PATCH 09/38] usercopy: Mark kmalloc caches as usercopy caches · Kees Cook <hidden> · 2020-02-01
Re: [kernel-hardening] [PATCH 09/38] usercopy: Mark kmalloc caches as usercopy caches · Jann Horn <jannh@google.com> · 2020-02-01
Re: [kernel-hardening] [PATCH 09/38] usercopy: Mark kmalloc caches as usercopy caches · Matthew Wilcox <willy@infradead.org> · 2020-02-03
Re: [kernel-hardening] [PATCH 09/38] usercopy: Mark kmalloc caches as usercopy caches · Christoph Hellwig <hch@infradead.org> · 2020-02-03
Re: [kernel-hardening] [PATCH 09/38] usercopy: Mark kmalloc caches as usercopy caches · Christopher Lameter <hidden> · 2020-02-03
Re: [kernel-hardening] [PATCH 09/38] usercopy: Mark kmalloc caches as usercopy caches · Vlastimil Babka <hidden> · 2020-04-07
Re: [kernel-hardening] [PATCH 09/38] usercopy: Mark kmalloc caches as usercopy caches · Christian Borntraeger <hidden> · 2020-04-07
Re: [kernel-hardening] [PATCH 09/38] usercopy: Mark kmalloc caches as usercopy caches · Jiri Slaby <hidden> · 2020-04-20
Re: [kernel-hardening] [PATCH 09/38] usercopy: Mark kmalloc caches as usercopy caches · Kees Cook <hidden> · 2020-04-20
Re: [kernel-hardening] [PATCH 09/38] usercopy: Mark kmalloc caches as usercopy caches · Christoph Hellwig <hch@infradead.org> · 2020-02-03
Re: [kernel-hardening] [PATCH 09/38] usercopy: Mark kmalloc caches as usercopy caches · Christoph Hellwig <hch@infradead.org> · 2020-02-03
[PATCH 10/38] dcache: Define usercopy region in dentry_cache slab cache · Kees Cook <hidden> · 2018-01-11
[PATCH 11/38] vfs: Define usercopy region in names_cache slab caches · Kees Cook <hidden> · 2018-01-11
[PATCH 12/38] vfs: Copy struct mount.mnt_id to userspace using put_user() · Kees Cook <hidden> · 2018-01-11
[PATCH 13/38] ext4: Define usercopy region in ext4_inode_cache slab cache · Kees Cook <hidden> · 2018-01-11
Re: [PATCH 13/38] ext4: Define usercopy region in ext4_inode_cache slab cache · Theodore Ts'o <tytso@mit.edu> · 2018-01-11
Re: [PATCH 13/38] ext4: Define usercopy region in ext4_inode_cache slab cache · Kees Cook <hidden> · 2018-01-11
Re: [PATCH 13/38] ext4: Define usercopy region in ext4_inode_cache slab cache · Matthew Wilcox <willy@infradead.org> · 2018-01-14
Re: [PATCH 13/38] ext4: Define usercopy region in ext4_inode_cache slab cache · Kees Cook <hidden> · 2018-01-11
[PATCH 14/38] ext2: Define usercopy region in ext2_inode_cache slab cache · Kees Cook <hidden> · 2018-01-11
[PATCH 15/38] jfs: Define usercopy region in jfs_ip slab cache · Kees Cook <hidden> · 2018-01-11
[PATCH 16/38] befs: Define usercopy region in befs_inode_cache slab cache · Kees Cook <hidden> · 2018-01-11
[PATCH 17/38] exofs: Define usercopy region in exofs_inode_cache slab cache · Kees Cook <hidden> · 2018-01-11
[PATCH 18/38] orangefs: Define usercopy region in orangefs_inode_cache slab cache · Kees Cook <hidden> · 2018-01-11
[PATCH 19/38] ufs: Define usercopy region in ufs_inode_cache slab cache · Kees Cook <hidden> · 2018-01-11
[PATCH 20/38] vxfs: Define usercopy region in vxfs_inode slab cache · Kees Cook <hidden> · 2018-01-11
[PATCH 21/38] cifs: Define usercopy region in cifs_request slab cache · Kees Cook <hidden> · 2018-01-11
[PATCH 22/38] scsi: Define usercopy region in scsi_sense_cache slab cache · Kees Cook <hidden> · 2018-01-11
[PATCH 23/38] net: Define usercopy region in struct proto slab cache · Kees Cook <hidden> · 2018-01-11
[PATCH 24/38] ip: Define usercopy region in IP proto slab cache · Kees Cook <hidden> · 2018-01-11
[PATCH 25/38] caif: Define usercopy region in caif proto slab cache · Kees Cook <hidden> · 2018-01-11
[PATCH 26/38] sctp: Define usercopy region in SCTP proto slab cache · Kees Cook <hidden> · 2018-01-11
[PATCH 27/38] sctp: Copy struct sctp_sock.autoclose to userspace using put_user() · Kees Cook <hidden> · 2018-01-11
Re: [PATCH 27/38] sctp: Copy struct sctp_sock.autoclose to userspace using put_user() · Laura Abbott <hidden> · 2018-01-18
Re: [PATCH 27/38] sctp: Copy struct sctp_sock.autoclose to userspace using put_user() · Kees Cook <hidden> · 2018-01-18
[PATCH 28/38] net: Restrict unwhitelisted proto caches to size 0 · Kees Cook <hidden> · 2018-01-11
[PATCH 29/38] fork: Define usercopy region in mm_struct slab caches · Kees Cook <hidden> · 2018-01-11
[PATCH 30/38] fork: Define usercopy region in thread_stack slab caches · Kees Cook <hidden> · 2018-01-11
[PATCH 31/38] fork: Provide usercopy whitelisting for task_struct · Kees Cook <hidden> · 2018-01-11
[PATCH 32/38] x86: Implement thread_struct whitelist for hardened usercopy · Kees Cook <hidden> · 2018-01-11
[PATCH 33/38] arm64: Implement thread_struct whitelist for hardened usercopy · Kees Cook <hidden> · 2018-01-11
Re: [PATCH 33/38] arm64: Implement thread_struct whitelist for hardened usercopy · Dave P Martin <Dave.Martin@arm.com> · 2018-01-15
Re: [PATCH 33/38] arm64: Implement thread_struct whitelist for hardened usercopy · Kees Cook <hidden> · 2018-01-15
Re: [PATCH 33/38] arm64: Implement thread_struct whitelist for hardened usercopy · Dave Martin <Dave.Martin@arm.com> · 2018-01-16
[PATCH 34/38] arm: Implement thread_struct whitelist for hardened usercopy · Kees Cook <hidden> · 2018-01-11
Re: [PATCH 34/38] arm: Implement thread_struct whitelist for hardened usercopy · Russell King - ARM Linux <linux@armlinux.org.uk> · 2018-01-11
Re: [PATCH 34/38] arm: Implement thread_struct whitelist for hardened usercopy · Kees Cook <hidden> · 2018-01-11
[PATCH 35/38] kvm: whitelist struct kvm_vcpu_arch · Kees Cook <hidden> · 2018-01-11
[PATCH 36/38] kvm: x86: fix KVM_XEN_HVM_CONFIG ioctl · Kees Cook <hidden> · 2018-01-11
[PATCH 37/38] usercopy: Restrict non-usercopy caches to size 0 · Kees Cook <hidden> · 2018-01-11
[PATCH 38/38] lkdtm: Update usercopy tests for whitelisting · Kees Cook <hidden> · 2018-01-11

From: Jiri Slaby <hidden>
Date: 2020-01-23 08:14:34
Also in: linux-arch, linux-fsdevel, linux-mm, linux-xfs, lkml

On 14. 11. 19, 22:27, Kees Cook wrote:

On Tue, Nov 12, 2019 at 01:21:54PM -0800, Kees Cook wrote:

quoted

How is iucv the only network protocol that has run into this? Do others
use a bounce buffer?

Another solution would be to use a dedicated kmem cache (instead of the
shared kmalloc dma one)?

Has there been any conclusion to this thread yet? For the time being, we
disabled HARDENED_USERCOPY on s390...

https://lore.kernel.org/kernel-hardening/9519edb7-456a-a2fa-659e-3e5a1ff89466@suse.cz/ (local)

thanks,
-- 
js
suse labs

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