Your system information

• Steam client version (build number or date):
  1.0.0.54-1
  Build date: Jun 8, 2017
• Distribution (e.g. Ubuntu):
  Arch linux
• Opted into Steam client beta?: [Yes/No]
  No
• Have you checked for system updates?: [Yes/No]
  Yes

Please describe your issue in as much detail as possible:

While playing a game, I got disconnected and steam coredumped.

Stack trace of thread 692:
                #0  0x00000000f72a610f __GI_strlen (libc.so.6)
                #1  0x00000000f7272f00 vfprintf (libc.so.6)
                #2  0x00000000f7296721 vsnprintf (libc.so.6)
                #3  0x00000000f518991a V_vsnprintf (libvstdlib_s.so)
                #4  0x00000000ee374f95 n/a (steamclient.so)
                #5  0x00000000ee630819 n/a (steamclient.so)
                #6  0x00000000ee612470 n/a (steamclient.so)
                #7  0x00000000ee534944 n/a (steamclient.so)
                #8  0x00000000eed3e927 n/a (steamclient.so)
                #9  0x00000000f517fe70 n/a (libvstdlib_s.so)
                [#10](/issue/ValveSoftware/steam-for-linux/10) 0x00000000f5180eae n/a (libvstdlib_s.so)
                [#11](/issue/ValveSoftware/steam-for-linux/11) 0x00000000f5180fef Coroutine_Continue (libvstdlib_s.so)
                [#12](/issue/ValveSoftware/steam-for-linux/12) 0x00000000eed3ee32 n/a (steamclient.so)
                [#13](/issue/ValveSoftware/steam-for-linux/13) 0x00000000eed44a2f n/a (steamclient.so)
                [#14](/issue/ValveSoftware/steam-for-linux/14) 0x00000000eed44cc9 n/a (steamclient.so)
                [#15](/issue/ValveSoftware/steam-for-linux/15) 0x00000000eed435f8 n/a (steamclient.so)
                [#16](/issue/ValveSoftware/steam-for-linux/16) 0x00000000eed0cffe n/a (steamclient.so)
                [#17](/issue/ValveSoftware/steam-for-linux/17) 0x00000000ee36f770 n/a (steamclient.so)
                [#18](/issue/ValveSoftware/steam-for-linux/18) 0x00000000ee370576 n/a (steamclient.so)
                [#19](/issue/ValveSoftware/steam-for-linux/19) 0x00000000f620add0 _ZN16SteamThreadTools7CThread22ThreadExceptionWrapperEPv (libtier0_s.so)
                [#20](/issue/ValveSoftware/steam-for-linux/20) 0x00000000f62091fb n/a (libtier0_s.so)
                [#21](/issue/ValveSoftware/steam-for-linux/21) 0x00000000f62094cf CatchAndWriteMiniDumpExForVoidPtrFn (libtier0_s.so)
                [#22](/issue/ValveSoftware/steam-for-linux/22) 0x00000000f6209521 CatchAndWriteMiniDumpForVoidPtrFn (libtier0_s.so)
                [#23](/issue/ValveSoftware/steam-for-linux/23) 0x00000000f620da61 _ZN16SteamThreadTools7CThread10ThreadProcEPv (libtier0_s.so)
                [#24](/issue/ValveSoftware/steam-for-linux/24) 0x00000000f74500c8 start_thread (libpthread.so.0)
                [#25](/issue/ValveSoftware/steam-for-linux/25) 0x00000000f731b906 __clone (libc.so.6)
                
                Stack trace of thread 653:
                #0  0x00000000f7787c79 __kernel_vsyscall (linux-gate.so.1)
                #1  0x00000000f7456ace pthread_cond_timedwait@@GLIBC_2.3.2 (libpthread.so.0)
                #2  0x00000000f620ca3b _ZN16SteamThreadTools17CThreadSyncObject4WaitEj (libtier0_s.so)
                #3  0x00000000ee37cc53 n/a (steamclient.so)
                #4  0x00000000ee378c2d n/a (steamclient.so)
                #5  0x00000000ee378e40 n/a (steamclient.so)
                #6  0x00000000ee379226 n/a (steamclient.so)
                #7  0x00000000ee36bbde n/a (steamclient.so)
                #8  0x00000000ee7d37ab n/a (steamclient.so)
                #9  0x00000000f3f5e52d n/a (steamui.so)
                [#10](/issue/ValveSoftware/steam-for-linux/10) 0x00000000f3f5ef2c n/a (steamui.so)
                [#11](/issue/ValveSoftware/steam-for-linux/11) 0x00000000f3f0f15d n/a (steamui.so)
                [#12](/issue/ValveSoftware/steam-for-linux/12) 0x00000000f3e6f3cd n/a (steamui.so)
                [#13](/issue/ValveSoftware/steam-for-linux/13) 0x00000000f3e71bb6 n/a (steamui.so)
                [#14](/issue/ValveSoftware/steam-for-linux/14) 0x00000000f3e73193 n/a (steamui.so)
                [#15](/issue/ValveSoftware/steam-for-linux/15) 0x0000000056591790 _Z8RunSteamiPPcb (steam)
                [#16](/issue/ValveSoftware/steam-for-linux/16) 0x000000005657d8f9 n/a (steam)
                [#17](/issue/ValveSoftware/steam-for-linux/17) 0x00000000f7245253 __libc_start_main (libc.so.6)
                [#18](/issue/ValveSoftware/steam-for-linux/18) 0x0000000056580fe9 _start (steam)

Steps for reproducing this issue:

1. Disconnect network while playing a game