Issue with autofs (coredump) comand: systemctl reload autofs generate coredump on rhel9.2

Solution Verified - Updated -

Environment

  • Red Hat Enterprise Linux 9.2
  • autofs-5.1.7-36.el9.x86_64

Issue

  • systemctl reload autofs generates a coredump each time. After reboot everything is OK again.
  • autofs works fails at autofs-5.1.7-36.el9.x86_64

Resolution

Root Cause

  • This issue is caused by an internal bug 2216535
  • autofs reload a coredump.

Diagnostic Steps

  • autofs status shows the failure below:
● systemctl status autofs
× autofs.service - Automounts filesystems on demand
     Loaded: loaded (/usr/lib/systemd/system/autofs.service; enabled; preset: disabled)
     Active: failed (Result: core-dump) since Fri 2023-06-09 16:26:25 CEST; 2min 8s ago
   Duration: 2min 19.913s
   Main PID: 1815 (code=dumped, signal=SEGV)
        CPU: 39ms
Jun 09 16:26:25 dal-v-128335 automount[1815]: parse_mount: parse(sun): expanded entry: -rw,retrans=50,retry=50,sloppy,noacl,hard,timeo=600,bg,intr,proto=tcp,rsize=65536,wsize=65536,vers=3,maxgroups=32 s>
Jun 09 16:26:25 dal-v-128335 automount[1815]: parse_mount: parse(sun): gathered options: rw,retrans=50,retry=50,sloppy,noacl,hard,timeo=600,bg,intr,proto=tcp,rsize=65536,wsize=65536,vers=3,maxgroups=32
Jun 09 16:26:25 dal-v-128335 automount[1815]: parse_mount: parse(sun): dequote("example1.dassault-.fr:/X.X_0504_098/uscnu_data") -> example1.dassault-.fr:/ns_np_op_data_fsc_050>
Jun 09 16:26:25 dal-v-128335 automount[1815]: parse_mount: parse(sun): core of entry: options=rw,retrans=50,retry=50,sloppy,noacl,hard,timeo=600,bg,intr,proto=tcp,rsize=65536,wsize=65536,vers=3,maxgroup>
Jun 09 16:26:25 dal-v-128335 automount[1815]: sun_mount: parse(sun): mounting root /dx/sx/X/home/data, mountpoint /dx/sc\x/nx/home/data, what example1.dassault-.fr:/x.x.x_fsc_0504_098/uscnu>
Jun 09 16:26:25 dal-v-128335 automount[1815]: re-connected to /dx/sx/nx/home/data
Jun 09 16:26:25 dal-v-128335 automount[1815]: remount_active_mount: re-connected to mount /dx/sx/nx/home/data
Jun 09 16:26:25 dal-v-128335 systemd[1]: autofs.service: Main process exited, code=dumped, status=11/SEGV
Jun 09 16:26:25 dal-v-128335 systemd[1]: autofs.service: Failed with result 'core-dump'.
Jun 09 16:26:25 dal-v-128335 systemd[1]: Failed to start Automounts filesystems on demand..

#2  0x0000562fc1420fa2 in mount_autofs_direct (ap=0x562fc21d9fb0) at /usr/src/debug/autofs-5.1.7-36.el9.x86_64/daemon/direct.c:508
        __clframe = {__cancel_routine = <optimized out>, __cancel_arg = 0x562fc21d6670, __do_it = 1, __cancel_type = <optimized out>}
        timeout = 300
        __clframe = {__cancel_routine = <optimized out>, __cancel_arg = 0x562fc21a68e0, __do_it = 1, __cancel_type = <optimized out>}
        __clframe = {__cancel_routine = <optimized out>, __cancel_arg = 0x562fc21d6d70, __do_it = 1, __cancel_type = <optimized out>}
        map = 0x562fc21da0b0
        nc = 0x562fc21a68e0
        mc = 0x562fc21d6670
        me = 0x7f7c2804f160
        ne = <optimized out>
        nested = <optimized out>
        now = <optimized out>
        __FUNCTION__ = "mount_autofs_direct"
#3  0x0000562fc14218b8 in mount_autofs (root=0x7f7c28000b60 "/-", ap=0x562fc21d9fb0) at /usr/src/debug/autofs-5.1.7-36.el9.x86_64/daemon/automount.c:1231
        status = 0
        status = <optimized out>
#4  handle_mounts (arg=0x7fff9ed3ef70) at /usr/src/debug/autofs-5.1.7-36.el9.x86_64/daemon/automount.c:1937
        __clframe = {__cancel_routine = 0x562fc1419380 <return_start_status>, __cancel_arg = 0x7fff9ed3ef70, __do_it = 1, __cancel_type = <optimized out>}
        suc = <optimized out>
        ap = 0x562fc21d9fb0
        cancel_state = 0
        status = <optimized out>
        root = 0x7f7c28000b60 "/-"
        __FUNCTION__ = "handle_mounts"
#5  0x00007f7c34c9f802 in start_thread (arg=<optimized out>) at pthread_create.c:443
        ret = <optimized out>
        pd = <optimized out>
        out = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140735858076928, 2383233952604443010, 140171391325760, 9, 140171438322992, 0, -2311875622829076094, -2311864807752773246}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, 
              canceltype = 0}}}
        not_first_call = <optimized out>
#6  0x00007f7c34c3f450 in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:81

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