Unable to install Parallels Tools on Linux kernel 5.10

I am using Parallels for a while for managing Linux VM on my mac. Recently I tried to install a Linux instance with a new Linux 5.10. The installation itself went smooth and everything works as expected, except Parallels Tools, which I need to have shared clipboard on my mac and linux. Is there a way to fix this issue?
The root cause of the issues is the breaking changes in new kernel probably. I see the following errors:

Code:

Parallels Tools 16.0.1-48919 Installer started.
2021-01-07T11:55:30+0100: Failed to setup console printk level.
2021-01-07T11:55:31+0100: execCmd: ./install --check [0]
2021-01-07T11:55:31+0100: execCmd: ./installer/detect-xserver.sh -v >/dev/null 2>&1 [0]
2021-01-07T11:55:32+0100: execCmd: ./installer/pm.sh --check gtools [0]
Started installation of Parallels Guest Tools version '16.0.1.48919'

Error during report about start installation of parallels tools.
Thu Jan 7 11:55:33 CET 2021
Start installation or upgrade of Guest Tools
new version of parallels tools
Installed Guest Tools were not found
Register service to install new Guest Tools
Perform installation into the /usr/lib/parallels-tools directory
make: Entering directory '/usr/lib/parallels-tools/kmods'
Will use compiler CC="cc".
Compiler version "cc (GCC) 10.2.0"
cd prl_eth/pvmnet && make CC=cc
make[1]: Entering directory '/usr/lib/parallels-tools/kmods/prl_eth/pvmnet'
make -C /lib/modules/5.10.4-arch2-1/build M=/usr/lib/parallels-tools/kmods/prl_eth/pvmnet CC=cc
make[2]: Entering directory '/usr/lib/modules/5.10.4-arch2-1/build'
  CC [M]  /usr/lib/parallels-tools/kmods/prl_eth/pvmnet/pvmnet.o
  LD [M]  /usr/lib/parallels-tools/kmods/prl_eth/pvmnet/prl_eth.o
  MODPOST /usr/lib/parallels-tools/kmods/prl_eth/pvmnet/Module.symvers
  CC [M]  /usr/lib/parallels-tools/kmods/prl_eth/pvmnet/prl_eth.mod.o
  LD [M]  /usr/lib/parallels-tools/kmods/prl_eth/pvmnet/prl_eth.ko
make[2]: Leaving directory '/usr/lib/modules/5.10.4-arch2-1/build'
make[1]: Leaving directory '/usr/lib/parallels-tools/kmods/prl_eth/pvmnet'
cd prl_tg/Toolgate/Guest/Linux/prl_tg && make CC=cc
make[1]: Entering directory '/usr/lib/parallels-tools/kmods/prl_tg/Toolgate/Guest/Linux/prl_tg'
1: /lib/modules/5.10.4-arch2-1/build
2: /usr/lib/parallels-tools/kmods/prl_tg/Toolgate/Guest/Linux/prl_tg
3: 20210107
4: 1.7.1
Start compile prl_tg...
make -C /lib/modules/5.10.4-arch2-1/build M=/usr/lib/parallels-tools/kmods/prl_tg/Toolgate/Guest/Linux/prl_tg SRCROOT=/usr/lib/parallels-tools/kmods/prl_tg/Toolgate/Guest/Linux/prl_tg CC=cc modules
make[2]: Entering directory '/usr/lib/modules/5.10.4-arch2-1/build'
1: /lib/modules/5.10.4-arch2-1/build
2: /usr/lib/parallels-tools/kmods/prl_tg/Toolgate/Guest/Linux/prl_tg
3: 20210107
4: 1.7.1
  CC [M]  /usr/lib/parallels-tools/kmods/prl_tg/Toolgate/Guest/Linux/prl_tg/prltg.o
  CC [M]  /usr/lib/parallels-tools/kmods/prl_tg/Toolgate/Guest/Linux/prl_tg/prltg_call.o
  LD [M]  /usr/lib/parallels-tools/kmods/prl_tg/Toolgate/Guest/Linux/prl_tg/prl_tg.o
1: /lib/modules/5.10.4-arch2-1/build
2: /usr/lib/parallels-tools/kmods/prl_tg/Toolgate/Guest/Linux/prl_tg
3: 20210107
4: 1.7.1
  MODPOST /usr/lib/parallels-tools/kmods/prl_tg/Toolgate/Guest/Linux/prl_tg/Module.symvers
  CC [M]  /usr/lib/parallels-tools/kmods/prl_tg/Toolgate/Guest/Linux/prl_tg/prl_tg.mod.o
  LD [M]  /usr/lib/parallels-tools/kmods/prl_tg/Toolgate/Guest/Linux/prl_tg/prl_tg.ko
make[2]: Leaving directory '/usr/lib/modules/5.10.4-arch2-1/build'
make[1]: Leaving directory '/usr/lib/parallels-tools/kmods/prl_tg/Toolgate/Guest/Linux/prl_tg'
cp -f prl_tg/Toolgate/Guest/Linux/prl_tg/*.symvers prl_fs/SharedFolders/Guest/Linux/prl_fs ||:
cd prl_fs/SharedFolders/Guest/Linux/prl_fs && make CC=cc KBUILD_EXTRA_SYMBOLS=/usr/lib/parallels-tools/kmods/prl_tg/Toolgate/Guest/Linux/prl_tg/Module.symvers
make[1]: Entering directory '/usr/lib/parallels-tools/kmods/prl_fs/SharedFolders/Guest/Linux/prl_fs'
make -C /lib/modules/5.10.4-arch2-1/build M=/usr/lib/parallels-tools/kmods/prl_fs/SharedFolders/Guest/Linux/prl_fs CC=cc
make[2]: Entering directory '/usr/lib/modules/5.10.4-arch2-1/build'
  CC [M]  /usr/lib/parallels-tools/kmods/prl_fs/SharedFolders/Guest/Linux/prl_fs/super.o
  CC [M]  /usr/lib/parallels-tools/kmods/prl_fs/SharedFolders/Guest/Linux/prl_fs/inode.o
/usr/lib/parallels-tools/kmods/prl_fs/SharedFolders/Guest/Linux/prl_fs/inode.c: In function 'init_buffer_descriptor':
/usr/lib/parallels-tools/kmods/prl_fs/SharedFolders/Guest/Linux/prl_fs/inode.c:58:31: error: implicit declaration of function 'segment_eq' [-Werror=implicit-function-declaration]
   58 |  bd->user = (user == 0) ? 0 : segment_eq(get_fs(), USER_DS) ? 1 : 0;
      |                               ^~~~~~~~~~
/usr/lib/parallels-tools/kmods/prl_fs/SharedFolders/Guest/Linux/prl_fs/inode.c:58:42: error: implicit declaration of function 'get_fs'; did you mean 'sget_fc'? [-Werror=implicit-function-declaration]
   58 |  bd->user = (user == 0) ? 0 : segment_eq(get_fs(), USER_DS) ? 1 : 0;
      |                                          ^~~~~~
      |                                          sget_fc
/usr/lib/parallels-tools/kmods/prl_fs/SharedFolders/Guest/Linux/prl_fs/inode.c:58:52: error: 'USER_DS' undeclared (first use in this function); did you mean 'USER_HZ'?
   58 |  bd->user = (user == 0) ? 0 : segment_eq(get_fs(), USER_DS) ? 1 : 0;
      |                                                    ^~~~~~~
      |                                                    USER_HZ
/usr/lib/parallels-tools/kmods/prl_fs/SharedFolders/Guest/Linux/prl_fs/inode.c:58:52: note: each undeclared identifier is reported only once for each function it appears in
cc1: some warnings being treated as errors
make[3]: *** [scripts/Makefile.build:279: /usr/lib/parallels-tools/kmods/prl_fs/SharedFolders/Guest/Linux/prl_fs/inode.o] Error 1
make[2]: Leaving directory '/usr/lib/modules/5.10.4-arch2-1/build'
make[2]: *** [Makefile:1805: /usr/lib/parallels-tools/kmods/prl_fs/SharedFolders/Guest/Linux/prl_fs] Error 2
make[1]: Leaving directory '/usr/lib/parallels-tools/kmods/prl_fs/SharedFolders/Guest/Linux/prl_fs'
make[1]: *** [Makefile:36: all] Error 2
make: Leaving directory '/usr/lib/parallels-tools/kmods'
make: *** [Makefile.kmods:33: compile] Error 2
Error: could not build kernel modules
Error during report about failed installation of parallels tools.
Error: failed to install Parallels Guest Tools!
2021-01-07T11:55:39+0100: Started installation of Parallels Guest Tools version '16.0.1.48919'
Error during report about start installation of parallels tools.

Thu Jan 7 11:55:33 CET 2021
Start installation or upgrade of Guest Tools
/usr/lib/parallels-tools/kmods/prl_fs/SharedFolders/Guest/Linux/prl_fs/inode.c: In function 'init_buffer_descriptor':
/usr/lib/parallels-tools/kmods/prl_fs/SharedFolders/Guest/Linux/prl_fs/inode.c:58:31: error: implicit declaration of function 'segment_eq' [-Werror=implicit-function-declaration]
   58 |  bd->user = (user == 0) ? 0 : segment_eq(get_fs(), USER_DS) ? 1 : 0;
      |                               ^~~~~~~~~~
/usr/lib/parallels-tools/kmods/prl_fs/SharedFolders/Guest/Linux/prl_fs/inode.c:58:42: error: implicit declaration of function 'get_fs'; did you mean 'sget_fc'? [-Werror=implicit-function-declaration]
   58 |  bd->user = (user == 0) ? 0 : segment_eq(get_fs(), USER_DS) ? 1 : 0;
      |                                          ^~~~~~
      |                                          sget_fc
/usr/lib/parallels-tools/kmods/prl_fs/SharedFolders/Guest/Linux/prl_fs/inode.c:58:52: error: 'USER_DS' undeclared (first use in this function); did you mean 'USER_HZ'?
   58 |  bd->user = (user == 0) ? 0 : segment_eq(get_fs(), USER_DS) ? 1 : 0;
      |                                                    ^~~~~~~
      |                                                    USER_HZ
/usr/lib/parallels-tools/kmods/prl_fs/SharedFolders/Guest/Linux/prl_fs/inode.c:58:52: note: each undeclared identifier is reported only once for each function it appears in
cc1: some warnings being treated as errors
make[3]: *** [scripts/Makefile.build:279: /usr/lib/parallels-tools/kmods/prl_fs/SharedFolders/Guest/Linux/prl_fs/inode.o] Error 1
make[2]: *** [Makefile:1805: /usr/lib/parallels-tools/kmods/prl_fs/SharedFolders/Guest/Linux/prl_fs] Error 2
make[1]: *** [Makefile:36: all] Error 2
make: *** [Makefile.kmods:33: compile] Error 2
Error: could not build kernel modules
Error during report about failed installation of parallels tools.
Error: failed to install Parallels Guest Tools!
2021-01-07T11:55:39+0100: execCmd: ./install --install [167]
2021-01-07T11:55:39+0100: Error: An error occurred when installing Parallels Tools. Please go to /var/log/parallels-tools-install.log for more information.
2021-01-07T11:55:49+0100: Exiting with code 1

 

I've the same problem with Manjaro distr and kernel 5.10.2-2. Thnaks

 

Look at the patch for 5.9

 

Thanks a lot all is now ok, I've patched manually.
thanks

 

Indeed it works. Thanks, Mark!

 

@Mark Fine appears that after successful install, still shared clipboard does not work and there is no mounts either. Checked multiple places, but found no errors anywhere. Could you please suggest how to troubleshoot?
I am running Arch Linux 5.10.6.

 

According to post somewhere the clipboard issue might be related to Wayland. I think to get around that don't use the regular Gnome setting when logging in. Try using "Gnome Classic" or "Gnome on Xorg". The shared mounts might be related.

 

Regarding the patch this made my Fedora 30 (Kernel 5.10) under Mac (Host 10.15.7) working.
Please note that the parallel tool compilation worked, so I have now shared folders etc., but coherency did not work. Actually, I'm wondering how Parallels can really want their users to follow such advanced machines, but maybe there are to little Linux users which suppoedly are all experts....

Procedure:
I used patch (5.9) for my Kernel (5.10) and followed this procudure here (Tools Patch Procedure)
https://forum.parallels.com/threads/tools-patch-procedure.351669/

Kernel Patch Downloaded from here:
https://forum.parallels.com/threads/tools-patch-procedure.351669/

My modifications were then for the kernel patch in step 9 of the decription:

a.) Modified Inode.c

#include <linux/slab.h>

#if LINUX_VERSION_CODE >= KERNEL_VERSION(5, 9, 0)
#include <linux/blkdev.h>
#endif

#include <asm/uaccess.h>

b.) Modified prl_freeze.c to:

bd->write = (write == 0) ? 0 : 1;
#if LINUX_VERSION_CODE >= KERNEL_VERSION(5, 9, 0)
bd->user = (user == 0) ? 0 : uaccess_kernel() ? 0 : 1;
#else
bd->user = (user == 0) ? 0 : segment_eq(get_fs(), USER_DS) ? 1 : 0;
#endif
bd->flags = TG_REQ_COMMON;



And this was my patch file I doawnloaded:
parallels-tools-16.0.0.48916/prl_fs/SharedFolders/Guest/Linux/prl_fs/inode.c
--- parallels-tools-16.0.0.48916.orig/prl_fs/SharedFolders/Guest/Linux/prl_fs/inode.c 2020-07-31 03:05:59.000000000 +1000
+++ parallels-tools-16.0.0.48916/prl_fs/SharedFolders/Guest/Linux/prl_fs/inode.c 2020-10-18 07:05:09.716999971 +1100
@@ -55,7 +55,11 @@ void init_buffer_descriptor(struct buffe
bd->buf = buf;
bd->len = len;
bd->write = (write == 0) ? 0 : 1;
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(5, 9, 0)
+ bd->user = (user == 0) ? 0 : uaccess_kernel() ? 0 : 1;
+#else
bd->user = (user == 0) ? 0 : segment_eq(get_fs(), USER_DS) ? 1 : 0;
+#endif
bd->flags = TG_REQ_COMMON;
}
diff -puNr parallels-tools-16.0.0.48916.orig/prl_fs_freeze/Snapshot/Guest/Linux/prl_freeze/prl_fs_freeze.c parallels-tools-16.0.0.48916/prl_fs_freeze/Snapshot/Guest/Linux/prl_freeze/prl_fs_freeze.c
--- parallels-tools-16.0.0.48916.orig/prl_fs_freeze/Snapshot/Guest/Linux/prl_freeze/prl_fs_freeze.c 2020-07-31 03:06:00.000000000 +1000
+++ parallels-tools-16.0.0.48916/prl_fs_freeze/Snapshot/Guest/Linux/prl_freeze/prl_fs_freeze.c 2020-10-18 07:13:21.300333278 +1100
@@ -20,6 +20,9 @@
#include <linux/workqueue.h>
#include <linux/namei.h>
#include <linux/slab.h>
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(5, 9, 0)
+#include <linux/blkdev.h>
+#endif
#include <asm/uaccess.h>
#include "prlfs_freeze_compat.h"

 

You might have the filenames reversed in a) and b) but it's good that you got it working. Congrats.

 

Hi Mark,

you are totally right, in my post the filenames are reversed....

Regards
Dietrich