nemo crashed with SIGSEGV in gtk_tree_model_get_valist()

[Joshua Peisach]

See: https://github.com/linuxmint/nemo/issues/2614. Reproduced bug

ProblemType: Crash
DistroRelease: Ubuntu 21.04
Package: nemo 4.8.6-1
ProcVersionSignature: Ubuntu 5.11.0-11.12-generic 5.11.0
Uname: Linux 5.11.0-11-generic x86_64
ApportVersion: 2.20.11-0ubuntu60
Architecture: amd64
CasperMD5CheckResult: unknown
CurrentDesktop: X-Cinnamon
Date: Mon Mar 22 15:44:16 2021
ExecutablePath: /usr/bin/nemo
InstallationDate: Installed on 2021-02-28 (22 days ago)
InstallationMedia: ubuntucinnamonremix "@BASECODENAME" (20210227)
ProcCmdline: nemo
SegvAnalysis:
 Segfault happened at: 0x7ffb5fd36422 <gtk_tree_model_get_valist+274>: mov 0x30(%rax),%rcx
 PC (0x7ffb5fd36422) ok
 source "0x30(%rax)" (0x00000030) not located in a known VMA region (needed readable region)!
 destination "%rcx" ok
SegvReason: reading NULL VMA
Signal: 11
SourcePackage: nemo
StacktraceTop:
 gtk_tree_model_get_valist () at /lib/x86_64-linux-gnu/libgtk-3.so.0
 gtk_tree_model_get () at /lib/x86_64-linux-gnu/libgtk-3.so.0
 filename_cell_data_func (column=<optimized out>, renderer=0x55a2a9773830, model=0x55a2a92c3e40, iter=0x55a2a92c40e0, view=0x55a2a9aea550) at ../src/nemo-list-view.c:2162
 () at /lib/x86_64-linux-gnu/libgtk-3.so.0
 g_hash_table_foreach () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
Title: nemo crashed with SIGSEGV in gtk_tree_model_get_valist()
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip lpadmin plugdev sudo
separator:

[Joshua Peisach (itzswirlz)]

It actually traces to gtk_separator_menu_item_new.