Backtrace:
#0  __libc_do_syscall () at ../ports/sysdeps/unix/sysv/linux/arm/libc-do-syscall.S:44
44	../ports/sysdeps/unix/sysv/linux/arm/libc-do-syscall.S: No such file or directory.
(gdb) bt full
#0  __libc_do_syscall () at ../ports/sysdeps/unix/sysv/linux/arm/libc-do-syscall.S:44
No locals.
#1  0xb58d1e5e in __GI_raise (sig=sig@entry=6) at ../nptl/sysdeps/unix/sysv/linux/raise.c:56
        _a1 = 0
        _a3tmp = 6
        _a1tmp = 0
        _a3 = 6
        _nametmp = 268
        _a2tmp = 4924
        _a2 = 4924
        _name = 268
        _sys_result = <optimized out>
        pd = 0xac085370
        pid = 0
        selftid = 4924
#2  0xb58d2b4e in __GI_abort () at abort.c:89
        save_stage = 2
        act = {__sigaction_handler = {sa_handler = 0x0, sa_sigaction = 0x0}, sa_mask = {__val = {3069791548, 3046740840, 1130327653, 4294967295, 0, 3046601780, 4294967295, 4294967295, 3045793976, 2, 4, 2886220744, 2886228016, 0, 0, 3046727680, 3046630632, 0, 3046727680, 
              1, 2906575152, 101, 2886223720, 3046065667, 3046730064, 0, 3046601816, 2808782848, 4294967295, 3046730064, 2906575220, 3046601816}}, sa_flags = -1388392144, sa_restorer = 0x65}
        sigs = {__val = {32, 0 <repeats 31 times>}}
#3  0xb58cd0c4 in __assert_fail_base (fmt=0x1 <error: Cannot access memory at address 0x1>, assertion=0xad3ed174 "ifilename[0] == '/'", assertion@entry=0x0, file=0xad3ed130 "/build/buildd/thumbnailer-1.3+15.04.20141202/src/imagescaler.cpp", file@entry=0xac085370 "\001", 
    line=101, line@entry=3046731948, 
    function=function@entry=0xad3ed088 <ImageScaler::scale(std::string const&, std::string const&, ThumbnailSize, std::string const&, std::string const&) const::__PRETTY_FUNCTION__> "bool ImageScaler::scale(const string&, const string&, ThumbnailSize, const string&, const string&) const") at assert.c:92
        str = 0xcd20a0 "\001"
        total = 4096
#4  0xb58cd15a in __GI___assert_fail (assertion=0x0, file=0xac085370 "\001", line=3046731948, 
    function=0xad3ed088 <ImageScaler::scale(std::string const&, std::string const&, ThumbnailSize, std::string const&, std::string const&) const::__PRETTY_FUNCTION__> "bool ImageScaler::scale(const string&, const string&, ThumbnailSize, const string&, const string&) const") at assert.c:101
No locals.
#5  0xad3e625e in ImageScaler::scale (this=this@entry=0xa0eb88, ifilename=<error reading variable: Cannot access memory at address 0x65>, ofilename="/home/phablet/.cache/com.ubuntu.gallery/thumbnails/large/f4beee1bd41fc89bcd9ebc83e6140e11.png", 
    wanted=wanted@entry=TN_SIZE_LARGE, original_location="/home/phablet/Pictures/com.ubuntu.camera/image20150106_164049006.jpg", rotation_source_file="/home/phablet/Pictures/com.ubuntu.camera/image20150106_164049006.jpg")
    at /build/buildd/thumbnailer-1.3+15.04.20141202/src/imagescaler.cpp:101
        rnd = {{_M_file = 0xcd2920, _M_mt = {static word_size = <optimized out>, static state_size = 624, static shift_size = <optimized out>, static mask_bits = <optimized out>, static xor_mask = <optimized out>, static tempering_u = <optimized out>, 
              static tempering_d = <optimized out>, static tempering_s = <optimized out>, static tempering_b = <optimized out>, static tempering_t = <optimized out>, static tempering_c = <optimized out>, static tempering_l = <optimized out>, 
              static initialization_multiplier = <optimized out>, static default_seed = <optimized out>, _M_x = {13445408, 0 <repeats 175 times>, 3046103113, 2886223232, 2906575262, 0, 2886221880, 10, 2886228016, 3045981173, 0, 0, 2886223176, 0, 0, 3045986462, 
                3045986462, 3045986462, 3046585240, 0, 0, 0, 0, 0, 0, 0, 3337084892, 0 <repeats 13 times>, 4294967286, 32, 0, 0, 0, 0, 0, 10, 0, 0, 0, 0, 0, 4294967295, 117, 2886223580, 0, 0, 0, 0, 0, 2886222112, 2, 0, 0, 2886222108, 2906575260, 3046727680, 0, 
                2906575262, 2886223576, 3045779248, 2886222176, 0, 226653476, 3069657291, 0, 3045798664, 3045784552, 3069791632, 3069792256, 2886222320, 3069715940, 3069794492, 3069709484, 3069791632, 0, 0, 3045784552, 3045780228, 2886222248, 0, 4245278497, 3069657291, 
                2906289696, 3045802584, 3045784552, 3069791632, 3069792256, 2886222392, 3069715940, 3069794492, 3069709484, 3069791632, 0, 0, 5, 1127, 2906718088, 3069763584, 2906294303, 3045819880, 2906289968, 1, 2906370936, 2906717640, 2906717200, 2906294303, 
                2886222360, 4245278497, 2886222508, 2886222392, 2886222400, 3069657833, 2886222400, 3069794996, 0, 2906718088, 5, 0, 1, 2906717200, 194, 122, 120, 124, 0, 2906717640, 2886226800, 2906717200, 4294967295, 3046728936, 3045802584, 3069763584, 96232, 52857, 
                2906370936, 2886222592, 96232, 0, 13201152, 3046726652, 13201152, 2, 13201152, 2906718088, 2886226800, 2906288128, 241784, 0, 3046727680, 1, 1, 3046101553, 2906718088, 0, 0, 0, 3046101121, 13201152, 0, 13199720, 2333504, 2886223716, 10543544, 11618160, 
                2886223720, 3046066155, 13201152, 0, 2886222580, 13201152, 13199720, 2906334371, 0, 0, 0, 467859555, 2118295483, 975191752, 1861061135, 1639533914, 1877699486, 2863388558...}, _M_p = 13449956}}}
        __PRETTY_FUNCTION__ = "bool ImageScaler::scale(const string&, const string&, ThumbnailSize, const string&, const string&) const"
        err = 0x0
        ofilename_tmp = <error reading variable: Cannot access memory at address 0xfffffff4>
        orig = {u = 0x0}
        w = <optimized out>
        save_ok = <optimized out>
        rotation_info = <error reading variable: Cannot access memory at address 0x69756223>
        src = {u = 0x0}
        h = <optimized out>
        neww = <optimized out>
        newh = <optimized out>
        dst = {u = 0x0}
#6  0xad3ebc54 in ThumbnailerPrivate::create_thumbnail (this=0xa0e1b8, abspath="/home/phablet/Pictures/com.ubuntu.camera/image20150106_164049006.jpg", desired_size=desired_size@entry=TN_SIZE_LARGE, policy=policy@entry=TN_LOCAL)
    at /build/buildd/thumbnailer-1.3+15.04.20141202/src/thumbnailer.cpp:195
        tnfile = "/home/phablet/.cache/com.ubuntu.gallery/thumbnails/large/f4beee1bd41fc89bcd9ebc83e6140e11.png"
        succeeded = <optimized out>
        embedded_image = "\021"
        file = std::unique_ptr<_GFile> containing 0xb14770
        info = std::unique_ptr<_GFileInfo> containing 0xae101bc8
        content_type = "image/jpeg"
#7  0xad3ebe6a in Thumbnailer::get_thumbnail (this=0xa11790, filename=..., desired_size=TN_SIZE_LARGE, policy=policy@entry=TN_LOCAL) at /build/buildd/thumbnailer-1.3+15.04.20141202/src/thumbnailer.cpp:229
        abspath = "/home/phablet/Pictures/com.ubuntu.camera/image20150106_164049006.jpg"
        estimate = ""
        generated = <error reading variable: Cannot access memory at address 0xfffffff9>
---Type <return> to continue, or q <return> to quit---
#8  0xad3ec00e in Thumbnailer::get_thumbnail (this=<optimized out>, filename=..., desired_size=<optimized out>) at /build/buildd/thumbnailer-1.3+15.04.20141202/src/thumbnailer.cpp:237
No locals.
#9  0xad51bd82 in ThumbnailGenerator::requestImage(QString const&, QSize*, QSize const&) () from /usr/lib/arm-linux-gnueabihf/qt5/qml/Ubuntu/Thumbnailer.0.1/libthumbnailer-qml.so
No symbol table info available.
#10 0xb63b7214 in ?? () from /usr/lib/arm-linux-gnueabihf/libQt5Quick.so.5
No symbol table info available.
Backtrace stopped: previous frame identical to this frame (corrupt stack?)