Public bug reported:
Hi,
on my system, with default sysctl parameters, fwupd fails to start
because of a crash.
In the journal, I see many error messages such as this one:
Jun 03 10:16:59 vougeot fwupd[42726]: 08:16:59.639 FuBackend
failed to create device: failed to probe: failed to open
/sys/devices/pci0000:00/0000:00:08.3/uevent: Too many open files
and then:
Jun 03 10:17:01 vougeot fwupd[42726]: 08:17:01.371 GLib
Creating pipes for GWakeup: Too many open files
Finally fwupd crashes:
Jun 03 10:17:01 vougeot kernel: traps: fwupd[42726] trap int3
ip:7f8742880f0f sp:7ffd2e9639c0 error:0 in
libglib-2.0.so.0.8400.1[73f0f,7f874282c000+bd000]
Here are inotify parameters:
# sysctl fs.inotify
fs.inotify.max_queued_events = 16384
fs.inotify.max_user_instances = 256 # This is already increased from a
default of 128
fs.inotify.max_user_watches = 65536
Increasing fs.inotify.max_user_instances to 512 fixes the problem.
Of course, fwupd should also be made more robust and not crash when it
encounters a system limit.
Thanks.
ProblemType: Bug
DistroRelease: Ubuntu 25.04
Package: fwupd 2.0.7-1
Uname: Linux 6.14.9-zabbly+ x86_64
ApportVersion: 2.32.0-0ubuntu5.1
Architecture: amd64
CasperMD5CheckResult: unknown
CurrentDesktop: KDE
Date: Tue Jun 3 11:30:54 2025
SourcePackage: fwupd
UpgradeStatus: No upgrade log present (probably fresh install)
modified.conffile..etc.fwupd.fwupd.conf: [inaccessible: [Errno 13] Permission
denied: '/etc/fwupd/fwupd.conf']
** Affects: fwupd (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug plucky
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https://bugs.launchpad.net/bugs/2112372
Title:
Please increase fs.inotify.max_user_instances
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