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Debian testing (buster), "vfat not found"




Hi, first time caller...

Originally posted this is Linux Questions' Hardware subforum. Copying and pasting the tasty bits:

Trying to mount a thumb drive and an mp3 player under Debian testing (buster), got a "filesystem vfat not found" message from the automounter.

Tried "sudo modprobe vfat," got an "operation not permitted."

Modinfo did find the vfat module, so at least there's that.

Both the kernel and the vfat module are the same version, 4.19.0-1-amd64.

dmesg did not report anything interesting. I can post a tail or grep for something if somebody asks.

I did verify that my user account had access to the mount point. I also repeated the modprobe su-ed as root. Same error message.

I verified that the thumbdrive is fat32 (which vfat should handle, if I could get the module to load).

Did a cat /proc/devices got what I *think* is a list of numbers associated with all the devices on my system. Not sure how to get the vfat module to cough up what number it's trying to grab. I can post the cat /proc/devices list if anybody asks.

[code]
sudo /sbin/modprobe -vv vfat
modprobe: INFO: ../libkmod/libkmod.c:364 kmod_set_log_fn() custom logging function 0x5648b5e8ced0 registered
insmod /lib/modules/4.19.0-1-amd64/kernel/fs/fat/fat.ko
modprobe: INFO: ../libkmod/libkmod-module.c:886 kmod_module_insert_module() Failed to insert module '/lib/modules/4.19.0-1-amd64/kernel/fs/fat/fat.ko': Operation not permitted
modprobe: ERROR: could not insert 'vfat': Operation not permitted
modprobe: INFO: ../libkmod/libkmod.c:331 kmod_unref() context 0x5648b7d91410 released
[/code]

[code]
sudo /sbin/modprobe -vvv vfat
modprobe: INFO: ../libkmod/libkmod.c:364 kmod_set_log_fn() custom logging function 0x5558b37deed0 registered
modprobe: DEBUG: ../libkmod/libkmod-index.c:755 index_mm_open() file=/lib/modules/4.19.0-1-amd64/modules.dep.bin
modprobe: DEBUG: ../libkmod/libkmod-index.c:755 index_mm_open() file=/lib/modules/4.19.0-1-amd64/modules.alias.bin
modprobe: DEBUG: ../libkmod/libkmod-index.c:755 index_mm_open() file=/lib/modules/4.19.0-1-amd64/modules.symbols.bin
modprobe: DEBUG: ../libkmod/libkmod-index.c:755 index_mm_open() file=/lib/modules/4.19.0-1-amd64/modules.builtin.bin
modprobe: DEBUG: ../libkmod/libkmod-module.c:556 kmod_module_new_from_lookup() input alias=vfat, normalized=vfat
modprobe: DEBUG: ../libkmod/libkmod-module.c:562 kmod_module_new_from_lookup() lookup modules.dep vfat
modprobe: DEBUG: ../libkmod/libkmod.c:574 kmod_search_moddep() use mmaped index 'modules.dep' modname=vfat
modprobe: DEBUG: ../libkmod/libkmod.c:402 kmod_pool_get_module() get module name='vfat' found=(nil)
modprobe: DEBUG: ../libkmod/libkmod.c:410 kmod_pool_add_module() add 0x5558b4632fe0 key='vfat'
modprobe: DEBUG: ../libkmod/libkmod.c:402 kmod_pool_get_module() get module name='fat' found=(nil)
modprobe: DEBUG: ../libkmod/libkmod.c:402 kmod_pool_get_module() get module name='fat' found=(nil)
modprobe: DEBUG: ../libkmod/libkmod.c:410 kmod_pool_add_module() add 0x5558b46330f0 key='fat'
modprobe: DEBUG: ../libkmod/libkmod-module.c:196 kmod_module_parse_depline() add dep: /lib/modules/4.19.0-1-amd64/kernel/fs/fat/fat.ko
modprobe: DEBUG: ../libkmod/libkmod-module.c:202 kmod_module_parse_depline() 1 dependencies for vfat
modprobe: DEBUG: ../libkmod/libkmod-module.c:583 kmod_module_new_from_lookup() lookup vfat=0, list=0x5558b4632600
modprobe: DEBUG: ../libkmod/libkmod.c:501 lookup_builtin_file() use mmaped index 'modules.builtin' modname=vfat
modprobe: DEBUG: ../libkmod/libkmod-module.c:1750 kmod_module_get_initstate() could not open '/sys/module/vfat/initstate': No such file or directory
modprobe: DEBUG: ../libkmod/libkmod-module.c:1760 kmod_module_get_initstate() could not open '/sys/module/vfat': No such file or directory
modprobe: DEBUG: ../libkmod/libkmod-module.c:1393 kmod_module_get_options() modname=snd_pcsp mod->name=fat mod->alias=(null)
modprobe: DEBUG: ../libkmod/libkmod-module.c:1393 kmod_module_get_options() modname=snd_usb_audio mod->name=fat mod->alias=(null)
modprobe: DEBUG: ../libkmod/libkmod-module.c:1393 kmod_module_get_options() modname=cx88_alsa mod->name=fat mod->alias=(null)
modprobe: DEBUG: ../libkmod/libkmod-module.c:1393 kmod_module_get_options() modname=snd_atiixp_modem mod->name=fat mod->alias=(null)
modprobe: DEBUG: ../libkmod/libkmod-module.c:1393 kmod_module_get_options() modname=snd_intel8x0m mod->name=fat mod->alias=(null)
modprobe: DEBUG: ../libkmod/libkmod-module.c:1393 kmod_module_get_options() modname=snd_via82xx_modem mod->name=fat mod->alias=(null)
modprobe: DEBUG: ../libkmod/libkmod-module.c:1393 kmod_module_get_options() modname=md_mod mod->name=fat mod->alias=(null)
modprobe: DEBUG: ../libkmod/libkmod-module.c:1393 kmod_module_get_options() modname=bonding mod->name=fat mod->alias=(null)
modprobe: DEBUG: ../libkmod/libkmod-module.c:1393 kmod_module_get_options() modname=dummy mod->name=fat mod->alias=(null)
modprobe: DEBUG: ../libkmod/libkmod.c:501 lookup_builtin_file() use mmaped index 'modules.builtin' modname=fat
modprobe: DEBUG: ../libkmod/libkmod-module.c:1750 kmod_module_get_initstate() could not open '/sys/module/fat/initstate': No such file or directory
modprobe: DEBUG: ../libkmod/libkmod-module.c:1760 kmod_module_get_initstate() could not open '/sys/module/fat': No such file or directory
modprobe: DEBUG: ../libkmod/libkmod-module.c:744 kmod_module_get_path() name='fat' path='/lib/modules/4.19.0-1-amd64/kernel/fs/fat/fat.ko'
modprobe: DEBUG: ../libkmod/libkmod-module.c:744 kmod_module_get_path() name='fat' path='/lib/modules/4.19.0-1-amd64/kernel/fs/fat/fat.ko'
insmod /lib/modules/4.19.0-1-amd64/kernel/fs/fat/fat.ko
modprobe: DEBUG: ../libkmod/libkmod-module.c:744 kmod_module_get_path() name='fat' path='/lib/modules/4.19.0-1-amd64/kernel/fs/fat/fat.ko'
modprobe: INFO: ../libkmod/libkmod-module.c:886 kmod_module_insert_module() Failed to insert module '/lib/modules/4.19.0-1-amd64/kernel/fs/fat/fat.ko': Operation not permitted
modprobe: ERROR: could not insert 'vfat': Operation not permitted
modprobe: DEBUG: ../libkmod/libkmod-module.c:468 kmod_module_unref() kmod_module 0x5558b4632fe0 released
modprobe: DEBUG: ../libkmod/libkmod.c:418 kmod_pool_del_module() del 0x5558b4632fe0 key='vfat'
modprobe: DEBUG: ../libkmod/libkmod-module.c:468 kmod_module_unref() kmod_module 0x5558b46330f0 released
modprobe: DEBUG: ../libkmod/libkmod.c:418 kmod_pool_del_module() del 0x5558b46330f0 key='fat'
modprobe: INFO: ../libkmod/libkmod.c:331 kmod_unref() context 0x5558b4632460 released
[/code]

[code]
sudo /sbin/depmod -a /lib/modules/4.19.0-1-amd64/kernel/fs/fat/vfat.ko
depmod: ERROR: Bad version passed /lib/modules/4.19.0-1-amd64/kernel/fs/fat/vfat.ko
[/code]

Not sure what that "ERROR: Bad version passed" means, but it looks important.

Any suggestions, guys?