Public bug reported:

When I quickly fire

nmcli d wifi rescan ssid test-hidden

multiple times, the network-manager crashes with segfault.

Here a coredump:

PID: 4760 (NetworkManager)
UID: 0 (root)
GID: 0 (root)
Signal: 11 (SEGV)
Timestamp: Wed 2024-03-06 11:39:52 CET (9min ago)
Command Line: /usr/sbin/NetworkManager --no-daemon
Executable: /sbin/NetworkManager
Control Group: /system.slice/NetworkManager.service
Unit: NetworkManager.service
Slice: system.slice
Boot ID: <boot-id>
Machine ID: <machine-id>
Hostname: <hostname>
Storage:
/var/lib/systemd/coredump/core.NetworkManager.0.7f830276610c4ea886c51f8b922e9e3d.47
60.1709721592000000000000.lz4
Message: Process 4760 (NetworkManager) of user 0 dumped core.
Stack trace of thread 4760:
#0 0x00007f1780fa2efb c_list_unlink_stale (libnm-device-plugin-wifi.so + 
0x17efb)
#1 0x00007f1780fa349f _scan_request_ssids_remove (libnm-device-plugin-wifi.so + 
0x1849f)
#2 0x00007f1780fa37e8 _scan_request_ssids_fetch (libnm-device-plugin-wifi.so + 
0x187e8)
#3 0x00007f1780fa70aa _scan_request_ssids_build_hidden 
(libnm-device-plugin-wifi.so + 0x1c0aa)
#4 0x00007f1780fa945a _scan_kickoff (libnm-device-plugin-wifi.so + 0x1e45a)
#5 0x00007f1780fa7d0a _scan_kickoff_timeout_cb (libnm-device-plugin-wifi.so + 
0x1cd0a)
#6 0x00007f1787bd4be8 n/a (libglib-2.0.so.0 + 0x52be8)
#7 0x00007f1787bd404e g_main_context_dispatch (libglib-2.0.so.0 + 0x5204e)
#8 0x00007f1787bd4400 n/a (libglib-2.0.so.0 + 0x52400)
#9 0x00007f1787bd46f3 g_main_loop_run (libglib-2.0.so.0 + 0x526f3)
#10 0x0000564a05942577 n/a (/sbin/NetworkManager + 0x3c577)
#11 0x00007f1787989083 __libc_start_main (libc.so.6 + 0x24083)
#12 0x0000564a059410de n/a (/sbin/NetworkManager + 0x3b0de)


Ubuntu 22.04.3 LTS
network-manager 1.36.6-0ubuntu2

** Affects: network-manager (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: manager network scan wifi

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Touch seeded packages, which is subscribed to network-manager in Ubuntu.
https://bugs.launchpad.net/bugs/2056529

Title:
  network-manager segfaults on multiple wifi scans

Status in network-manager package in Ubuntu:
  New

Bug description:
  When I quickly fire

  nmcli d wifi rescan ssid test-hidden

  multiple times, the network-manager crashes with segfault.

  Here a coredump:

  PID: 4760 (NetworkManager)
  UID: 0 (root)
  GID: 0 (root)
  Signal: 11 (SEGV)
  Timestamp: Wed 2024-03-06 11:39:52 CET (9min ago)
  Command Line: /usr/sbin/NetworkManager --no-daemon
  Executable: /sbin/NetworkManager
  Control Group: /system.slice/NetworkManager.service
  Unit: NetworkManager.service
  Slice: system.slice
  Boot ID: <boot-id>
  Machine ID: <machine-id>
  Hostname: <hostname>
  Storage:
  
/var/lib/systemd/coredump/core.NetworkManager.0.7f830276610c4ea886c51f8b922e9e3d.47
  60.1709721592000000000000.lz4
  Message: Process 4760 (NetworkManager) of user 0 dumped core.
  Stack trace of thread 4760:
  #0 0x00007f1780fa2efb c_list_unlink_stale (libnm-device-plugin-wifi.so + 
0x17efb)
  #1 0x00007f1780fa349f _scan_request_ssids_remove (libnm-device-plugin-wifi.so 
+ 0x1849f)
  #2 0x00007f1780fa37e8 _scan_request_ssids_fetch (libnm-device-plugin-wifi.so 
+ 0x187e8)
  #3 0x00007f1780fa70aa _scan_request_ssids_build_hidden 
(libnm-device-plugin-wifi.so + 0x1c0aa)
  #4 0x00007f1780fa945a _scan_kickoff (libnm-device-plugin-wifi.so + 0x1e45a)
  #5 0x00007f1780fa7d0a _scan_kickoff_timeout_cb (libnm-device-plugin-wifi.so + 
0x1cd0a)
  #6 0x00007f1787bd4be8 n/a (libglib-2.0.so.0 + 0x52be8)
  #7 0x00007f1787bd404e g_main_context_dispatch (libglib-2.0.so.0 + 0x5204e)
  #8 0x00007f1787bd4400 n/a (libglib-2.0.so.0 + 0x52400)
  #9 0x00007f1787bd46f3 g_main_loop_run (libglib-2.0.so.0 + 0x526f3)
  #10 0x0000564a05942577 n/a (/sbin/NetworkManager + 0x3c577)
  #11 0x00007f1787989083 __libc_start_main (libc.so.6 + 0x24083)
  #12 0x0000564a059410de n/a (/sbin/NetworkManager + 0x3b0de)

  
  Ubuntu 22.04.3 LTS
  network-manager 1.36.6-0ubuntu2

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