[systemd-bugs] [Bug 75854] New: systemd --user process segfaults randomly

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=75854

          Priority: medium
            Bug ID: 75854
          Assignee: systemd-bugs at lists.freedesktop.org
           Summary: systemd --user process segfaults randomly
        QA Contact: systemd-bugs at lists.freedesktop.org
          Severity: normal
    Classification: Unclassified
                OS: Linux (All)
          Reporter: abdo.roig at gmail.com
          Hardware: x86-64 (AMD64)
            Status: NEW
           Version: unspecified
         Component: general
           Product: systemd

I'm using systemd --user rather heavily to manage my processes. Since I updated
from 208 to 210 on Arch Linux, I experience sporadic segfaults on the user
instance, which I can't reproduce for now, only wait for it to happen again.

>From a coredump and an unstripped binary compiled a posteriory, I managed get a
partial stack trace, which I attach below. I'm not certain why there is still
missing debug data...

Is there anything else I can get from that coredump?


Core was generated by `/usr/lib/systemd/systemd --user'.
Program terminated with signal SIGSEGV, Segmentation fault.
#0  0x000000000048101e in get_user_creds (username=0x251b2f0, uid=0x3dd,
gid=0x7fffa11d002f, home=0x0, shell=0x7fffa11dec10) at src/shared/util.c:4217
4217                    if (p)
(gdb) bt full
#0  0x000000000048101e in get_user_creds (username=0x251b2f0, uid=0x3dd,
gid=0x7fffa11d002f, home=0x0, shell=0x7fffa11dec10) at src/shared/util.c:4217
        p = 0x0
        u = 0
        __PRETTY_FUNCTION__ = "get_user_creds"
        __PRETTY_FUNCTION__ = "get_user_creds"
#1  0x00007fffa11dec10 in ?? ()
No symbol table info available.
#2  0x00007fffa11dec10 in ?? ()
No symbol table info available.
#3  0x0000000000000010 in ?? ()
No symbol table info available.
#4  0x000000000248d1b0 in ?? ()
No symbol table info available.
#5  0x000000000042322c in socket_add_default_dependencies (s=0x0) at
src/core/socket.c:286
        r = <optimized out>
#6  socket_add_extras (s=0x0) at src/core/socket.c:356
        u = 0x0
        r = <optimized out>
        __PRETTY_FUNCTION__ = "socket_add_extras"
#7  socket_load.9848 (u=<optimized out>) at src/core/socket.c:412
        r = <optimized out>
        __PRETTY_FUNCTION__ = "socket_load"
        __PRETTY_FUNCTION__ = "socket_load"
#8  0x00000000024ca280 in ?? ()
No symbol table info available.
#9  0x0000000000000011 in ?? ()
No symbol table info available.
#10 0x0000000000000001 in ?? ()
No symbol table info available.
#11 0x00000000000003dd in ?? ()
No symbol table info available.
#12 0x0000000000000000 in ?? ()
No symbol table info available.

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