autofs reports "invalid path supplied for cmd(xxxx)" when restarting service with busy directories

Solution Verified - Updated -

Environment

  • Red Hat Enterprise Linux 8
    • autofs-5.1.4-74.el8 and later

Issue

  • Below messages are observed with active restart or start of autofs service, when there are busy mount(s).

    [...] autofs4:pid:xxxx:validate_dev_ioctl: invalid path supplied for cmd(0xc018937e)
[...] autofs4:pid:xxxx:validate_dev_ioctl: invalid path supplied for cmd(0xc018937e)

Resolution

  • This issue has been tracked with Bug 2148872 and closed with ERRATA RHBA-2023:2970.
    Please update autofs to autofs-5.1.4-93.el8.

Diagnostic Steps

  • Restart the autofs service when mounts are busy.
systemctl stop autofs
systemctl start autofs
  • Status of autofs :
● autofs.service - Automounts filesystems on demand
   Loaded: loaded (/usr/lib/systemd/system/autofs.service; bad; vendor preset: disabled)
   Active: active (running) since Tue 2022-11-22 06:29:22 EST; 3s ago
 Main PID: 513571 (automount)
    Tasks: 5 (limit: 2756)
   Memory: 13.9M
   CGroup: /system.slice/autofs.service
           └─513571 /usr/sbin/automount --systemd-service --dont-check-daemon


[1]: Started Automounts filesystems on demand.
[...]: tree_mapent_mount_offset: mount offset /net/x.x.x.x/data_06/1data-sap_>
[...]: remount_active_mount: trying to re-connect to mount /net/x.x.x.x/data>
[...]: mounted offset on /net/x.x.x.x/data_06/1data-sap_RR14798>
[...]: remount_active_mount: re-connected to mount /net/x.x.x.x/data_06/1818>
[...]: re-connected to /net/x.x.x.x/data_06
[...]: remount_active_mount: re-connected to mount /net/x.x.x.x/data_06
[...]: re-connected to /net/x.x.x.x
[...]: remount_active_mount: re-connected to mount /net
[...]: st_ready: st_ready(): state = 0 path /net
  • Check the dmesg logs :
[17291625.396116] Key type dns_resolver registered
[17291625.665595] NFS: Registering the id_resolver key type
[17291625.666750] Key type id_resolver registered
[17291625.667765] Key type id_legacy registered
[17617028.264150] autofs4:pid:513543:validate_dev_ioctl: invalid path supplied for cmd(0xc018937e)
[17617028.283659] autofs4:pid:513543:validate_dev_ioctl: invalid path supplied for cmd(0xc018937e)

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