Package: firejail Version: 0.9.58.2-2 Severity: important firejail hangs on strace with the firefox or waterfox profile. Example with the ls command (which is simpler than a web browser):
zira:~> /usr/bin/firejail --allow-debuggers --profile=firefox strace /bin/ls Reading profile /etc/firejail/firefox.profile Reading profile /etc/firejail/firefox-common.profile Reading profile /etc/firejail/disable-common.inc Reading profile /etc/firejail/disable-interpreters.inc Reading profile /etc/firejail/disable-programs.inc Reading profile /etc/firejail/whitelist-common.inc Reading profile /etc/firejail/whitelist-var-common.inc Warning: networking feature is disabled in Firejail configuration file Parent pid 2285, child pid 2286 Warning: An abstract unix socket for session D-BUS might still be available. Use --net or remove unix from --protocol set. Post-exec seccomp protector enabled Seccomp list in: @clock,@cpu-emulation,@debug,@module,@obsolete,@raw-io,@reboot,@resources,@swap,acct,add_key,bpf,fanotify_init,io_cancel,io_destroy,io_getevents,io_setup,io_submit,ioprio_set,kcmp,keyctl,mount,name_to_handle_at,nfsservctl,ni_syscall,open_by_handle_at,personality,pivot_root,process_vm_readv,ptrace,remap_file_pages,request_key,setdomainname,sethostname,syslog,umount,umount2,userfaultfd,vhangup,vmsplice, check list: @default-keep, prelist: adjtimex,clock_adjtime,clock_settime,settimeofday,modify_ldt,lookup_dcookie,perf_event_open,process_vm_writev,delete_module,finit_module,init_module,_sysctl,afs_syscall,create_module,get_kernel_syms,getpmsg,putpmsg,query_module,security,sysfs,tuxcall,uselib,ustat,vserver,ioperm,iopl,kexec_load,kexec_file_load,reboot,set_mempolicy,migrate_pages,move_pages,mbind,swapon,swapoff,acct,add_key,bpf,fanotify_init,io_cancel,io_destroy,io_getevents,io_setup,io_submit,ioprio_set,kcmp,keyctl,mount,name_to_handle_at,nfsservctl,open_by_handle_at,personality,pivot_root,process_vm_readv,ptrace,remap_file_pages,request_key,setdomainname,sethostname,syslog,umount2,userfaultfd,vhangup,vmsplice, Child process initialized in 78.27 ms and nothing else occurs. This makes impossible to try to see why some application does not work in firejail. Ditto when using --profile=/etc/firejail/firefox.profile directly (as given as an example for --allow-debuggers in the firejail(1) man page). No problems with the default profile or without strace. -- System Information: Debian Release: 10.0 APT prefers unstable-debug APT policy: (500, 'unstable-debug'), (500, 'stable-updates'), (500, 'unstable'), (500, 'testing'), (500, 'stable'), (1, 'experimental') Architecture: amd64 (x86_64) Kernel: Linux 4.19.0-5-amd64 (SMP w/8 CPU cores) Kernel taint flags: TAINT_PROPRIETARY_MODULE, TAINT_OOT_MODULE, TAINT_UNSIGNED_MODULE Locale: LANG=POSIX, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8), LANGUAGE=POSIX (charmap=UTF-8) Shell: /bin/sh linked to /bin/dash Init: systemd (via /run/systemd/system) LSM: AppArmor: enabled Versions of packages firejail depends on: ii libapparmor1 2.13.2-10 ii libc6 2.28-10 Versions of packages firejail recommends: ii firejail-profiles 0.9.58.2-2 ii iproute2 4.20.0-2 ii iptables 1.8.2-4 ii xauth 1:1.0.10-1 ii xpra 2.4.3+dfsg1-1 firejail suggests no packages. -- no debconf information

