getting core dump with grub2-mkconfig on systems with windows7 partitions??

[Michael D. Setzer II]

Running the command see these lines? But line 186 in 
50mounted-tests is just a "fi" line??

grub2-mkconfig -o /boot/grub2/grub.cfg 
Generating grub configuration file ...
/usr/libexec/os-probes/50mounted-tests: line 186: 1820513 
Segmentation fault      (core dumped) grub2-mount "$partition" 
"$tmpmnt" 2> /dev/null
/usr/libexec/os-probes/50mounted-tests: line 186: 1820535 
Segmentation fault      (core dumped) grub2-mount "$partition" 
"$tmpmnt" 2> /dev/null
/usr/libexec/os-probes/50mounted-tests: line 186: 1820562 
Segmentation fault      (core dumped) grub2-mount "$partition" 
"$tmpmnt" 2> /dev/null
Adding boot menu entry for UEFI Firmware Settings ...

Noticed some grub updates in latest dnf updates

+------------------------------------------------------------+
 Michael D. Setzer II - Computer Science Instructor (Retired)     
 mailto:[e-mail]                            
 mailto:[e-mail]
 mailto:[e-mail]
 Guam - Where America's Day Begins                        
 G4L Disk Imaging Project maintainer 
 http://sourceforge.net/projects/g4l/
+------------------------------------------------------------+

[Stephen Morris]

On 8/3/25 06:55, Michael D. Setzer II via users wrote:
> Running the command see these lines? But line 186 in
> 50mounted-tests is just a "fi" line??
>
> grub2-mkconfig -o /boot/grub2/grub.cfg
> Generating grub configuration file ...
> /usr/libexec/os-probes/50mounted-tests: line 186: 1820513
> Segmentation fault      (core dumped) grub2-mount "$partition"
> "$tmpmnt" 2> /dev/null
> /usr/libexec/os-probes/50mounted-tests: line 186: 1820535
> Segmentation fault      (core dumped) grub2-mount "$partition"
> "$tmpmnt" 2> /dev/null
> /usr/libexec/os-probes/50mounted-tests: line 186: 1820562
> Segmentation fault      (core dumped) grub2-mount "$partition"
> "$tmpmnt" 2> /dev/null
> Adding boot menu entry for UEFI Firmware Settings ...
>
> Noticed some grub updates in latest dnf updates

I have just done an update and the update did indeed update the grub2 
packages, and when I ran grub2-mkconfig I got the segmentation fault as 
well, but for me the process still produced the Fedora Menu entries, the 
Windows 11 menu entry and the Ubuntu menu entries. The one thing I did 
notice was the generated menus were now centered in the screen instead 
of the top left and the menus were displayed in a lower resolution, so 
much so that the menu font display was horrible.

regards,
Steve
> +------------------------------------------------------------+
>   Michael D. Setzer II - Computer Science Instructor (Retired)
>   mailto:[e-mail]
>   mailto:[e-mail]
>   mailto:[e-mail]
>   Guam - Where America's Day Begins
>   G4L Disk Imaging Project maintainer
>   http://sourceforge.net/projects/g4l/
> +------------------------------------------------------------+

[Michael D. Setzer II]

On 8 Mar 2025 at 10:48, Stephen Morris wrote:

Date sent:      	Sat, 8 Mar 2025 10:48:46 +1100
Subject:        	Re: getting core dump with grub2-mkconfig on 
systems with windows7
    partitions??
To:             	[e-mail]
From:           	Stephen Morris 
Send reply to:  	Community support for Fedora users 
> On 8/3/25 06:55, Michael D. Setzer II via users wrote:
> > Running the command see these lines? But line 186 in
> > 50mounted-tests is just a "fi" line??
> >
> > grub2-mkconfig -o /boot/grub2/grub.cfg
> > Generating grub configuration file ...
> > /usr/libexec/os-probes/50mounted-tests: line 186: 1820513
> > Segmentation fault      (core dumped) grub2-mount "$partition"
> > "$tmpmnt" 2> /dev/null
> > /usr/libexec/os-probes/50mounted-tests: line 186: 1820535
> > Segmentation fault      (core dumped) grub2-mount "$partition"
> > "$tmpmnt" 2> /dev/null
> > /usr/libexec/os-probes/50mounted-tests: line 186: 1820562
> > Segmentation fault      (core dumped) grub2-mount "$partition"
> > "$tmpmnt" 2> /dev/null
> > Adding boot menu entry for UEFI Firmware Settings ...
> >
> > Noticed some grub updates in latest dnf updates
>
> I have just done an update and the update did indeed update the grub2 
> packages, and when I ran grub2-mkconfig I got the segmentation fault as 
> well, but for me the process still produced the Fedora Menu entries, the 
> Windows 11 menu entry and the Ubuntu menu entries. The one thing I did 
> notice was the generated menus were now centered in the screen instead 
> of the top left and the menus were displayed in a lower resolution, so 
> much so that the menu font display was horrible.
>
> regards,
> Steve

Thanks for Info. I've got two old acer notebooks that had windows 
7, and I upgraded to Fedora, but left the windows 7 on. So, noticed 
they had the Segment faults. So, wasn't sure if it was only an issue 
with setups with windows 7 or what. I have 5 other machines with 
Fedora only, and they don't get error messages. Don't have any 
other machines with Fedora and other versions of windows. Have 
two mini PCs, but they came with just windows 11, and have added 
Fedora to them yet.
> > +------------------------------------------------------------+
> >   Michael D. Setzer II - Computer Science Instructor (Retired)
> >   mailto:[e-mail]
> >   mailto:[e-mail]
> >   mailto:[e-mail]
> >   Guam - Where America's Day Begins
> >   G4L Disk Imaging Project maintainer
> >   http://sourceforge.net/projects/g4l/
> > +------------------------------------------------------------+
>
> -- 
> _______________________________________________
> users mailing list -- [e-mail]
> To unsubscribe send an email to [e-mail]
> Fedora Code of Conduct: https://docs.fedoraproject.org/en-US/project/code-of-conduct/
> List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines
> List Archives: https://lists.fedoraproject.org/archives/list/[e-mail]
> Do not reply to spam, report it: https://pagure.io/fedora-infrastructure/new_issue

+------------------------------------------------------------+
 Michael D. Setzer II - Computer Science Instructor (Retired)     
 mailto:[e-mail]                            
 mailto:[e-mail]
 mailto:[e-mail]
 Guam - Where America's Day Begins                        
 G4L Disk Imaging Project maintainer 
 http://sourceforge.net/projects/g4l/
+------------------------------------------------------------+

[old sixpack13]

Michael D. Setzer II wrote:
> Running the command see these lines? But line 186 in 
> 50mounted-tests is just a "fi" line??
> grub2-mkconfig -o /boot/grub2/grub.cfg 
> Generating grub configuration file ...

I see this aswell during homebrewed kernel install.
Box has a second disk with win10 (first disk was disconnected during win10 install)

...
  INSTALL /boot
Generating grub configuration file ...
/usr/libexec/os-probes/50mounted-tests: line 186: 271279 Segmentation fault      (core dumped) grub2-mount "$partition" "$tmpmnt" 2> /dev/null
/usr/libexec/os-probes/50mounted-tests: line 186: 271301 Segmentation fault      (core dumped) grub2-mount "$partition" "$tmpmnt" 2> /dev/null
/usr/libexec/os-probes/50mounted-tests: line 186: 271324 Segmentation fault      (core dumped) grub2-mount "$partition" "$tmpmnt" 2> /dev/null
Found Windows Boot Manager on /dev/sda1@/efi/Microsoft/Boot/bootmgfw.efi
Adding boot menu entry for UEFI Firmware Settings ...

[Camina Shell]

Also updated F41 Workstation yesterday (which is a W11 dual-boot setup).
I think the issue is not with the tests file but with grub2-mount, which was likely changed in the update.
The update may have some vuln patches and perhaps some regressions. Trying to find out.

Action   Package                                                           Reason          Repository
  Upgrade  grub2-common-1:2.12-19.fc41.noarch                                Dependency      updates
  Upgrade  grub2-tools-minimal-1:2.12-19.fc41.x86_64                         Dependency      updates
  Upgrade  grub2-tools-extra-1:2.12-19.fc41.x86_64                           User            updates
  Upgrade  grub2-tools-efi-1:2.12-19.fc41.x86_64                             User            updates
  Upgrade  grub2-tools-1:2.12-19.fc41.x86_64                                 Dependency      updates
  Upgrade  grub2-efi-x64-modules-1:2.12-19.fc41.noarch                       User            updates
  Upgrade  grub2-efi-x64-1:2.12-19.fc41.x86_64                               User            updates
  Upgrade  libguestfs-1:1.55.6-1.fc41.x86_64                                 Dependency      updates
  Upgrade  libguestfs-appliance-1:1.55.6-1.fc41.x86_64                       Dependency      updates
  Upgrade  libguestfs-xfs-1:1.55.6-1.fc41.x86_64                             Weak Dependency updates

Replaced grub2-common-1:2.12-15.fc41.noarch                                Dependency      @System
  Replaced grub2-efi-x64-1:2.12-15.fc41.x86_64                               User            @System
  Replaced grub2-efi-x64-modules-1:2.12-15.fc41.noarch                       User            @System
  Replaced grub2-tools-1:2.12-15.fc41.x86_64                                 Dependency      @System
  Replaced grub2-tools-efi-1:2.12-15.fc41.x86_64                             User            @System
  Replaced grub2-tools-extra-1:2.12-15.fc41.x86_64                           User            @System
  Replaced grub2-tools-minimal-1:2.12-15.fc41.x86_64                         Dependency      @System
  Replaced libguestfs-1:1.55.3-2.fc41.x86_64                                 Dependency      @System
  Replaced libguestfs-appliance-1:1.55.3-2.fc41.x86_64                       Dependency      @System
  Replaced libguestfs-xfs-1:1.55.3-2.fc41.x86_64                             Weak Dependency @System

❯ grub2-mkconfig -o /boot/grub2/grub.cfg
Generating grub configuration file ...
/usr/libexec/os-probes/50mounted-tests: line 186: 92508 Segmentation fault      (core dumped) grub2-mount "$partition" "$tmpmnt" 2> /dev/null
Found Windows Boot Manager on /dev/nvme2n1p1@/efi/Microsoft/Boot/bootmgfw.efi
Adding boot menu entry for UEFI Firmware Settings ...
Detecting snapshots ...
Found snapshot: 2025-03-08 12:00:00 | .snapshots/854/snapshot | single | timeline
Found snapshot: 2025-03-08 00:47:35 | .snapshots/853/snapshot | single | 6.13.5-200.fc41.x86_64: Post-Boot (Bad Grub Update)
Found snapshot: 2025-03-08 00:31:11 | .snapshots/852/snapshot | single | 6.13.5-200.fc41.x86_64: Pre-Boot (Bad Grub Update)
Found snapshot: 2025-03-08 00:20:22 | .snapshots/851/snapshot | post   | dnf upgrade
Found snapshot: 2025-03-08 00:20:15 | .snapshots/850/snapshot | pre    | dnf upgrade

Trying to figure out how to resolve this situation.
I don't use Windows so may just wipe that volume, and then os-probe or grub2-mount won't error this.

[Camina Shell]

Running os-prober on its own also reveals this seg fault.

❯ sudo os-prober
/dev/nvme2n1p1@/efi/Microsoft/Boot/bootmgfw.efi:Windows Boot Manager:Windows:efi
/usr/libexec/os-probes/50mounted-tests: line 186: 224295 Segmentation fault      (core dumped) grub2-mount "$partition" "$tmpmnt" 2> /dev/null

[Michael D. Setzer II]

On 8 Mar 2025 at 13:53, Camina Shell via users wrote:

Subject:        	Re: getting core dump with grub2-mkconfig on 
systems with windows7
    partitions??
To:             	[e-mail]
Date sent:      	Sat, 08 Mar 2025 13:53:50 -0000
Send reply to:  	Community support for Fedora users 

From:           	Camina Shell via users 

Copies to:      	Camina Shell 
> Running os-prober on its own also reveals this seg fault.
>
> ❯ sudo os-prober
> /dev/nvme2n1p1@/efi/Microsoft/Boot/bootmgfw.efi:Windows Boot Manager:Windows:efi
> /usr/libexec/os-probes/50mounted-tests: line 186: 224295 Segmentation fault      (core dumped) grub2-mount "$partition" "$tmpmnt" 2> /dev/null
> --

Did some test on 50mounted-tests? Says line is 186, but that is just 
a "fi" line? Put an echo $partition "XXX" line before that set of if's, 
and got nothing to show on screen?? Then changed the echo with a
> > /tmp/XXX on end, and it then showed partitione sda1 2 and 3?

These are ntfs partitions?
/dev/sda2: LABEL="SYSTEM RESERVED" BLOCK_SIZE="512" 
UUID="2036488536485DC2" TYPE="ntfs" 
PARTUUID="7c819ab2-02"
/dev/sda3: LABEL="Acer" BLOCK_SIZE="512" 
UUID="6C224AD8224AA744" TYPE="ntfs" 
PARTUUID="7c819ab2-03"
/dev/sda1: LABEL="PQSERVICE" BLOCK_SIZE="512" 
UUID="1C0647FA0647D384" TYPE="ntfs" 
PARTUUID="7c819ab2-01"

These are not mounted partitions, so not sure why it is having an 
issue with them. 
Perhaps something should ignore "ntfs" type partitions.
But perhaps someone with more understanding would see what is 
needed to not get these segment faults.

Thanks.  I run grub2-mkconfig when I create new versions of my 
g4l project to update boot menu, so noticed it.
> users mailing list -- [e-mail]
> To unsubscribe send an email to [e-mail]
> Fedora Code of Conduct: https://docs.fedoraproject.org/en-US/project/code-of-conduct/
> List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines
> List Archives: https://lists.fedoraproject.org/archives/list/[e-mail]
> Do not reply to spam, report it: https://pagure.io/fedora-infrastructure/new_issue

+------------------------------------------------------------+
 Michael D. Setzer II - Computer Science Instructor (Retired)     
 mailto:[e-mail]                            
 mailto:[e-mail]
 mailto:[e-mail]
 Guam - Where America's Day Begins                        
 G4L Disk Imaging Project maintainer 
 http://sourceforge.net/projects/g4l/
+------------------------------------------------------------+

[Michael D. Setzer II]

On 8 Mar 2025 at 13:53, Camina Shell via users wrote:

Subject:        	Re: getting core dump with grub2-mkconfig on 
systems with windows7
    partitions??
To:             	[e-mail]
Date sent:      	Sat, 08 Mar 2025 13:53:50 -0000
Send reply to:  	Community support for Fedora users 

From:           	Camina Shell via users 

Copies to:      	Camina Shell 
> Running os-prober on its own also reveals this seg fault.
>
> ❯ sudo os-prober
> /dev/nvme2n1p1@/efi/Microsoft/Boot/bootmgfw.efi:Windows Boot Manager:Windows:efi
> /usr/libexec/os-probes/50mounted-tests: line 186: 224295 Segmentation fault      (core dumped) grub2-mount "$partition" "$tmpmnt" 2> /dev/null
> --

Did a test with grub2-probe and it gives same Segmentation fault 
on nfts partitions. Note book had 9 partitions.

for a in $(cat /proc/partitions | grep sda. | cut -b26-40); do echo -n 
/dev/$a" " ; grub2-probe -d /dev/$a; done
/dev/sda1 Segmentation fault (core dumped)
/dev/sda2 Segmentation fault (core dumped)
/dev/sda3 Segmentation fault (core dumped)
/dev/sda4 grub2-probe: error: cannot find a GRUB drive for 
/dev/sda4.  Check your device.map.
/dev/sda5 ext2
/dev/sda6 grub2-probe: error: ../grub-core/kern/fs.c:123:unknown 
filesystem.
/dev/sda7 ext2
/dev/sda8 ext2
/dev/sda9 ext2

Also, noticed /etc/filesystems and /proc/filesystems don't have ntfs??

Partitions on this notebook.

/dev/sda1            2048   39847935   39845888    19G 27 Hidden 
NTFS WinRE
/dev/sda2  *     39847936   40052735     204800   100M  7 
HPFS/NTFS/exFAT
/dev/sda3        40052736  379084799  339032064 161.7G  7 
HPFS/NTFS/exFAT
/dev/sda4       379084800 1953523711 1574438912 750.8G  5 
Extended
/dev/sda5       714633216  716730367    2097152     1G 83 Linux
/dev/sda6       716732416  724756479    8024064   3.8G 82 Linux 
swap / Solaris
/dev/sda7       724758528  835887103  111128576    53G 83 Linux
/dev/sda8       835889152 1953523711 1117634560 532.9G 83 
Linux
/dev/sda9       379086848  714631167  335544320   160G 83 Linux
> users mailing list -- [e-mail]
> To unsubscribe send an email to [e-mail]
> Fedora Code of Conduct: https://docs.fedoraproject.org/en-US/project/code-of-conduct/
> List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines
> List Archives: https://lists.fedoraproject.org/archives/list/[e-mail]
> Do not reply to spam, report it: https://pagure.io/fedora-infrastructure/new_issue

+------------------------------------------------------------+
 Michael D. Setzer II - Computer Science Instructor (Retired)     
 mailto:[e-mail]                            
 mailto:[e-mail]
 mailto:[e-mail]
 Guam - Where America's Day Begins                        
 G4L Disk Imaging Project maintainer 
 http://sourceforge.net/projects/g4l/
+------------------------------------------------------------+

getting core dump with grub2-mkconfig on systems with windows7 partitions?? (No windows menu entry?)

[Michael D. Setzer II]

On 9 Mar 2025 at 5:37, Michael D. Setzer II via user wrote:

To:             	Community support for Fedora users 

Date sent:      	Sun, 09 Mar 2025 05:37:13 +1000
Subject:        	Re: getting core dump with grub2-mkconfig on 
systems with windows7
    partitions??
Priority:       	normal
Send reply to:  	[e-mail],
    Community support for Fedora users 

From:           	"Michael D. Setzer II via users" 

Copies to:      	Camina Shell 
,
    "Michael D. Setzer II"
> On 8 Mar 2025 at 13:53, Camina Shell via users wrote:
>
> Subject:        	Re: getting core dump with grub2-mkconfig on 
> systems with windows7
>    partitions??
> To:             	[e-mail]
> Date sent:      	Sat, 08 Mar 2025 13:53:50 -0000
> Send reply to:  	Community support for Fedora users 
>
> From:           	Camina Shell via users 
>
> Copies to:      	Camina Shell 
> > Running os-prober on its own also reveals this seg fault.
> >
> > ❯ sudo os-prober
> > /dev/nvme2n1p1@/efi/Microsoft/Boot/bootmgfw.efi:Windows Boot Manager:Windows:efi
> > /usr/libexec/os-probes/50mounted-tests: line 186: 224295 Segmentation fault      (core dumped) grub2-mount "$partition" "$tmpmnt" 2> /dev/null
> > --
>
> Did a test with grub2-probe and it gives same Segmentation fault 
> on nfts partitions. Note book had 9 partitions.
>
> for a in $(cat /proc/partitions | grep sda. | cut -b26-40); do echo -n 
> /dev/$a" " ; grub2-probe -d /dev/$a; done
> /dev/sda1 Segmentation fault (core dumped)
> /dev/sda2 Segmentation fault (core dumped)
> /dev/sda3 Segmentation fault (core dumped)
> /dev/sda4 grub2-probe: error: cannot find a GRUB drive for 
> /dev/sda4.  Check your device.map.
> /dev/sda5 ext2
> /dev/sda6 grub2-probe: error: ../grub-core/kern/fs.c:123:unknown 
> filesystem.
> /dev/sda7 ext2
> /dev/sda8 ext2
> /dev/sda9 ext2
>
> Also, noticed /etc/filesystems and /proc/filesystems don't have ntfs??
>
> Partitions on this notebook.
>
> /dev/sda1            2048   39847935   39845888    19G 27 Hidden 
> NTFS WinRE
> /dev/sda2  *     39847936   40052735     204800   100M  7 
> HPFS/NTFS/exFAT
> /dev/sda3        40052736  379084799  339032064 161.7G  7 
> HPFS/NTFS/exFAT
> /dev/sda4       379084800 1953523711 1574438912 750.8G  5 
> Extended
> /dev/sda5       714633216  716730367    2097152     1G 83 Linux
> /dev/sda6       716732416  724756479    8024064   3.8G 82 Linux 
> swap / Solaris
> /dev/sda7       724758528  835887103  111128576    53G 83 Linux
> /dev/sda8       835889152 1953523711 1117634560 532.9G 83 
> Linux
> /dev/sda9       379086848  714631167  335544320   160G 83 Linux

Actually rebooted machine to check what windows option was 
showing, and found that there was no option to select windows 
from the grub2 menu??
Looking at grub.cfg found.
### BEGIN /etc/grub.d/30_os-prober ###
### END /etc/grub.d/30_os-prober ###

Then manually added this to have it have an option for windows?
The worked fine to boot the windows, but will require manually 
updating grub.cfg after running a grub2-mkconfig or other similar 
process.

### BEGIN /etc/grub.d/30_os-prober ###
menuentry "Windows 7" {
    insmod ntfs
    set root=(hd0,2)  # Modify this to match your Windows partition
    chainloader +1
}
### END /etc/grub.d/30_os-prober ###

Note both machines had Windows 7 from Acer installed, and don't 
seem to be be EFI setup, so just the regular ntldr setup.

Hadn't booted machine to Windows 7 for a long time, but had 
worked fine in past?
So, issue is bigger than an error message that does make a 
difference?

Thanks.
> > users mailing list -- [e-mail]
> > To unsubscribe send an email to [e-mail]
> > Fedora Code of Conduct: https://docs.fedoraproject.org/en-US/project/code-of-conduct/
> > List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines
> > List Archives: https://lists.fedoraproject.org/archives/list/[e-mail]
> > Do not reply to spam, report it: https://pagure.io/fedora-infrastructure/new_issue
>
> +------------------------------------------------------------+
>  Michael D. Setzer II - Computer Science Instructor (Retired)     
>  mailto:[e-mail]                            
>  mailto:[e-mail]
>  mailto:[e-mail]
>  Guam - Where America's Day Begins                        
>  G4L Disk Imaging Project maintainer 
>  http://sourceforge.net/projects/g4l/
> +------------------------------------------------------------+
>
> -- 
> _______________________________________________
> users mailing list -- [e-mail]
> To unsubscribe send an email to [e-mail]
> Fedora Code of Conduct: https://docs.fedoraproject.org/en-US/project/code-of-conduct/
> List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines
> List Archives: https://lists.fedoraproject.org/archives/list/[e-mail]
> Do not reply to spam, report it: https://pagure.io/fedora-infrastructure/new_issue

+------------------------------------------------------------+
 Michael D. Setzer II - Computer Science Instructor (Retired)     
 mailto:[e-mail]                            
 mailto:[e-mail]
 mailto:[e-mail]
 Guam - Where America's Day Begins                        
 G4L Disk Imaging Project maintainer 
 http://sourceforge.net/projects/g4l/
+------------------------------------------------------------+

getting core dump with grub2-mkconfig on systems with windows7 partitions?? (No windows menu entry?)

[Camina Shell]

Great findings! I may give it a go... I'm deciding whether or not to just purge the W11 volume as I don't use it anyway.
That said, I've been hunting down what changes, and been looking at the commits to the grub area.
Only found some nice security updates but nothing so far as to shine light on this issue.

https://github.com/rhboot/grub2/commits/fedora-41/

I especially like this one. Even after decrypting disk (TPM or manual), you'd now need to enter pass to edit kernel params etc.
https://github.com/rhboot/grub2/commit/5050f7b71334b474abe4b7c5253d1600d35eb...

Anyway, here's hoping they find this issue and patch it.

getting core dump with grub2-mkconfig on systems with windows7 partitions?? (No windows menu entry?)

[Michael D. Setzer II]

On 8 Mar 2025 at 23:21, Camina Shell via users wrote:

Subject:        	Re: getting core dump with grub2-mkconfig on 
systems with windows7
    partitions?? (No windows menu entry?)
To:             	[e-mail]
Date sent:      	Sat, 08 Mar 2025 23:21:29 -0000
Send reply to:  	Community support for Fedora users 

From:           	Camina Shell via users 

Copies to:      	Camina Shell 
> Great findings! I may give it a go... I'm deciding whether or not to just purge the W11 volume as I don't use it anyway.
> That said, I've been hunting down what changes, and been looking at the commits to the grub area.
> Only found some nice security updates but nothing so far as to shine light on this issue.
>
> https://github.com/rhboot/grub2/commits/fedora-41/
>
> I especially like this one. Even after decrypting disk (TPM or manual), you'd now need to enter pass to edit kernel params etc.
> https://github.com/rhboot/grub2/commit/5050f7b71334b474abe4b7c5253d1600d35eb...
> Anyway, here's hoping they find this issue and patch it.

Just as a temp fix. I created this file so that it creates entry. Again, 
mine is for windows 7, so yours might need some modification.

/etc/grub.d# cat 42_custom 
# !/bin/sh
exec tail -n +3 $0
# This file provides an easy way to add custom menu entries.  
Simply type the
# menu entries you want to add after this comment.  Be careful not 
to change
# the 'exec tail' line above.
menuentry "Windows 7" {
     insmod ntfs
     set root=(hd0,2)  # Modify this to match your Windows partition
     chainloader +1
 }
> users mailing list -- [e-mail]
> To unsubscribe send an email to [e-mail]
> Fedora Code of Conduct: https://docs.fedoraproject.org/en-US/project/code-of-conduct/
> List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines
> List Archives: https://lists.fedoraproject.org/archives/list/[e-mail]
> Do not reply to spam, report it: https://pagure.io/fedora-infrastructure/new_issue

+------------------------------------------------------------+
 Michael D. Setzer II - Computer Science Instructor (Retired)     
 mailto:[e-mail]                            
 mailto:[e-mail]
 mailto:[e-mail]
 Guam - Where America's Day Begins                        
 G4L Disk Imaging Project maintainer 
 http://sourceforge.net/projects/g4l/
+------------------------------------------------------------+

getting core dump with grub2-mkconfig on systems with windows7 partitions?? (No windows menu entry?)

[Stephen Morris]

On 9/3/25 10:21, Camina Shell via users wrote:
> Great findings! I may give it a go... I'm deciding whether or not to just purge the W11 volume as I don't use it anyway.
> That said, I've been hunting down what changes, and been looking at the commits to the grub area.
> Only found some nice security updates but nothing so far as to shine light on this issue.
>
> https://github.com/rhboot/grub2/commits/fedora-41/
>
> I especially like this one. Even after decrypting disk (TPM or manual), you'd now need to enter pass to edit kernel params etc.
> https://github.com/rhboot/grub2/commit/5050f7b71334b474abe4b7c5253d1600d35eb...
>
> Anyway, here's hoping they find this issue and patch it.

I've done a bit more investigation on this issue that I am getting as well.
Unlike Michael's situation I am getting the Windows entry in the grub 
menus after running grub2-mkconfig as well as the Fedora and Ubuntu entries.
The reason the segmentation-fault is specified as being line 186 is I 
believe because the grub2-mount statement on line 177 which is part of 
the if statement/if block starting at line 175 and ending at line 186.
The grub2-probe statement on line 179 also segmentation faults if it is 
executed.
That if block is trying to determine the partition type for all 
unmounted partitions that can be seen on the pc (I have 5 ntfs 
partitions on my machine and if I mount the 3 partitions I want to be 
able to access the segmentation fault only occurs twice, if those 3 
partitions are not mounted then I get 5 segmentation faults).
If I mount the 3 windows partitions I want mounted, as specified in 
/etc/fstab where I am specifying the ntfs-3g driver, and I look at those 
mount points in /proc/self/mountinfo, they are mounted using driver 
fuseblk, which seems to indicate the statement at line 184 has been 
executed, but I don't know where the output of the debug statements are 
written to so that I can check. If the statements within that if block 
starting at line 175 and ending at line 186 are being executed that to 
me highlights a Fedora or in my case a KDE defect as with grub2-mount 
segmentation faulting the true condition for the if should not have been 
triggered.
The mount info specifying that the 3 ntfs partitions I have mounted are 
using the fuseblk driver doesn't impact those partitions being able to 
be read from or written to.
I am getting the Windows entry written to the grub menus because I am 
using UEFI and the windows entry is being resolved from the UEFI 
partition which is not ntfs.
Grub seems to have lost its ability to understand ntfs partitions but I 
don't know exactly where or why.
Also for a long time I have not been convinced that os-prober has been 
working properly. The boot entry for Ubuntu seems to be being resolved 
from the partition that Ubuntu has been installed to, which in my case 
is /dev/sde1, and not from the UEFI Ubuntu folder in the efi partition 
as windows is being resolved from, but Ubuntu boots fine. Also if I boot 
from the grub menus created in Ubuntu and try to boot to Fedora I get a 
shim error.

regards,
Steve

getting core dump with grub2-mkconfig on systems with windows7 partitions?? (No windows menu entry?)

[Camina Shell]

I got in contact with a member of the rehat development team about this issue and they kindly responded with the below, quote:
> For the issue you mentioned, we are working on it and for the time being we will drop the culprit patch. Issue has been reported not just by fedora but by the aarch community as you can see in the above links
>
> [1] https://bugzilla.redhat.com/show_bug.cgi?id=2350327
> [2] https://gitlab.archlinux.org/archlinux/packaging/packages/grub/-/issues/11

This is great news! Thank you to the devs! And to those who raised the ticket!

Looking forward to this being fixed.

getting core dump with grub2-mkconfig on systems with windows7 partitions?? (No windows menu entry?)

[Camina Shell]

Today's update (on F41) included a version of grub2 that fixed this issue. Thank you to all those who contributed to fixing it!

```
...

Upgrade  grub2-common-1:2.12-20.fc41.noarch              Dependency      updates
Upgrade  grub2-tools-minimal-1:2.12-20.fc41.x86_64       Dependency      updates
Upgrade  grub2-tools-extra-1:2.12-20.fc41.x86_64         User            updates
Upgrade  grub2-tools-efi-1:2.12-20.fc41.x86_64           User            updates
Upgrade  grub2-tools-1:2.12-20.fc41.x86_64               Dependency      updates
Upgrade  grub2-efi-x64-modules-1:2.12-20.fc41.noarch     User            updates
Upgrade  grub2-efi-x64-1:2.12-20.fc41.x86_64             User            updates

...

❯ sudo grub2-mkconfig -o /boot/grub2/grub.cfg
Generating grub configuration file ...
Found Windows Boot Manager on /dev/nvme2n1p1@/efi/Microsoft/Boot/bootmgfw.efi
Adding boot menu entry for UEFI Firmware Settings ...
Detecting snapshots ...
Found snapshot: 2025-03-13 11:05:21 | .snapshots/950/snapshot | post   | dnf upgrade
Found snapshot: 2025-03-13 11:04:12 | .snapshots/949/snapshot | pre    | dnf upgrade
Found snapshot: 2025-03-13 11:00:00 | .snapshots/948/snapshot | single | timelin
```