Qt5.10 corelib cannot link

[yuk7]

Your Windows build number: Microsoft Windows [Version 10.0.17063.1000]

• What you're doing and what's happening:
  I'm tried to use Qt5.10 base corelib(llibQt5Core.so.5.10.0) but cannot link in all application using qt5(ex: texmaker,qgit and others)
  (Qt 5.9 and earlier versions is working correctly)

1. Install Qt5.10 base libraries.
2. Run Application using Qt5.

$ texmaker
texmaker: error while loading shared libraries: libQt5Core.so.5: cannot open shared object file: No such file or directory

$strace -f texmaker
~
stat("/usr/lib/x86_64", 0x7fffc1950e80) = -1 ENOENT (No such file or directory)
openat(AT_FDCWD, "/usr/lib/x86_64/libQt5Core.so.5", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
stat("/usr/lib/x86_64", 0x7fffc1950e80) = -1 ENOENT (No such file or directory)
openat(AT_FDCWD, "/usr/lib/libQt5Core.so.5", O_RDONLY|O_CLOEXEC) = 3
read(3, "\177ELF\2\1\1\3\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0\200]\t\0\0\0\0\0"..., 832) = 832
lseek(3, 5194016, SEEK_SET)             = 5194016
read(3, "\4\0\0\0\20\0\0\0\1\0\0\0GNU\0\0\0\0\0\3\0\0\0\21\0\0\0\0\0\0\0", 32) = 32
close(3)                                = 0
stat("/usr/lib", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
~

$ls -la /usr/lib/ | grep libQt5Core
-rw-r--r-- 1 root root     1114 Dec  7 16:30 libQt5Core.prl
lrwxrwxrwx 1 root root       20 Dec  7 16:30 libQt5Core.so -> libQt5Core.so.5.10.0
lrwxrwxrwx 1 root root       20 Dec  7 16:30 libQt5Core.so.5 -> libQt5Core.so.5.10.0
lrwxrwxrwx 1 root root       20 Dec  7 16:30 libQt5Core.so.5.10 -> libQt5Core.so.5.10.0
-rwxr-xr-x 1 root root  5250712 Dec  7 16:30 libQt5Core.so.5.10.0

log gist

Same binary package is working on Official Linux kernel.

[therealkenc]

You might want to post baby steps to get to your texmaker fail since Qt 5.10 isn't what ships with Xenial. Normally Qt5 lives in /usr/lib/x86_64-linux-gnu, not /usr/lib.

It is interesting that there's no rename2() ENOSYS making it into the strace output. Missing ENOSYS in an strace is a known issue, but I thought that was addressed in 17063. Or at least that's how I read the release notes.

I expected to be able to find the fail line in Qt pretty quick, but I am having trouble pinning the blame on rename2 proper. One thing that tilts my head to the side is the code looks like it ought to fall back:

    // If we're using syscall(), check for ENOSYS;
    // if renameat2 came from libc, we don't accept ENOSYS.
    // We can also get EINVAL for some non-local filesystems.
    if ((QT_CONFIG(renameat2) || errno != ENOSYS) && errno != EINVAL) {
        error = QSystemError(errno, QSystemError::StandardLibraryError);
        return false;
    }
   ..... at this point it tries to use hard links instead of rename2, I think.

That's the only place rename2() is called. I could be reading the if statement wrong. Probably am. But even if I am wrong and that QSystemError above fires, I'd expect to get a glaring "Function not implemented” out the command line, not "No such file or directory". In the strace output you pasted there are ENOENTs, but that last openat() succeeds (with fd 3) in the end. Not helpful mind. Just odd. Qt 5.5 is fine so rename2() is still as good a guess as any.

[DDoSolitary]

Same here. It can be reproduced on Arch Linux on WSL on insider build 17083. Simply install qt5-base (pacman -S qt5-base) and run an application depends on Qt.

For example, running pinentry-qt:

$pinentry-qt       
pinentry-qt: error while loading shared libraries: libQt5Core.so.5: cannot open shared object file: No such file or directory

But libQt5Core.so.5 does exists:

$stat /usr/lib/libQt5Core.so.5
  File: /usr/lib/libQt5Core.so.5 -> libQt5Core.so.5.10.0
  Size: 20        	Blocks: 0          IO Block: 512    symbolic link
Device: 2h/2d	Inode: 1970324837097831  Links: 1
Access: (0777/lrwxrwxrwx)  Uid: (    0/    root)   Gid: (    0/    root)
Access: 2018-02-07 10:14:20.000000000 +0800
Modify: 2018-02-04 03:35:59.000000000 +0800
Change: 2018-02-07 10:14:20.935738700 +0800
 Birth: -

$stat /usr/lib/libQt5Core.so.5.10.0
  File: /usr/lib/libQt5Core.so.5.10.0
  Size: 5251976   	Blocks: 10624      IO Block: 512    regular file
Device: 2h/2d	Inode: 1970324837097730  Links: 1
Access: (0755/-rwxr-xr-x)  Uid: (    0/    root)   Gid: (    0/    root)
Access: 2018-02-07 10:14:20.000000000 +0800
Modify: 2018-02-04 03:36:16.000000000 +0800
Change: 2018-02-07 10:14:20.353363700 +0800
 Birth: -

[DDoSolitary]

strace output

$strace pinentry-qt                  
execve("/usr/sbin/pinentry-qt", ["pinentry-qt"], 0x7fffcccaf410 /* 33 vars */) = 0
brk(NULL)                               = 0x7fffdd98d000
access("/etc/ld.so.preload", R_OK)      = -1 ENOENT (No such file or directory)
openat(AT_FDCWD, "/etc/ld.so.cache", O_RDONLY|O_CLOEXEC) = 3
fstat(3, {st_mode=S_IFREG|0644, st_size=79074, ...}) = 0
mmap(NULL, 79074, PROT_READ, MAP_PRIVATE, 3, 0) = 0x7fea7b7e4000
close(3)                                = 0
openat(AT_FDCWD, "/usr/lib/libsecret-1.so.0", O_RDONLY|O_CLOEXEC) = 3
read(3, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0\320\344\0\0\0\0\0\0"..., 832) = 832
fstat(3, {st_mode=S_IFREG|0755, st_size=333280, ...}) = 0
mmap(NULL, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fea7b7e0000
mmap(NULL, 2428992, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7fea7b1a0000
mprotect(0x7fea7b1ee000, 2093056, PROT_NONE) = 0
mmap(0x7fea7b3ed000, 16384, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x4d000) = 0x7fea7b3ed000
mmap(0x7fea7b3f1000, 64, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x7fea7b3f1000
close(3)                                = 0
openat(AT_FDCWD, "/usr/lib/libglib-2.0.so.0", O_RDONLY|O_CLOEXEC) = 3
read(3, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0p\241\1\0\0\0\0\0"..., 832) = 832
fstat(3, {st_mode=S_IFREG|0755, st_size=1129568, ...}) = 0
mmap(NULL, 3227752, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7fea7ae80000
mprotect(0x7fea7af93000, 2093056, PROT_NONE) = 0
mmap(0x7fea7b192000, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x112000) = 0x7fea7b192000
mmap(0x7fea7b194000, 104, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x7fea7b194000
close(3)                                = 0
openat(AT_FDCWD, "/usr/lib/libassuan.so.0", O_RDONLY|O_CLOEXEC) = 3
read(3, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0\3601\0\0\0\0\0\0"..., 832) = 832
fstat(3, {st_mode=S_IFREG|0755, st_size=75688, ...}) = 0
mmap(NULL, 2171232, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7fea7ac60000
mprotect(0x7fea7ac71000, 2097152, PROT_NONE) = 0
mmap(0x7fea7ae71000, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x11000) = 0x7fea7ae71000
close(3)                                = 0
openat(AT_FDCWD, "/usr/lib/libgpg-error.so.0", O_RDONLY|O_CLOEXEC) = 3
read(3, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0@.\0\0\0\0\0\0"..., 832) = 832
fstat(3, {st_mode=S_IFREG|0755, st_size=84680, ...}) = 0
mmap(NULL, 2179816, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7fea7aa40000
mprotect(0x7fea7aa54000, 2093056, PROT_NONE) = 0
mmap(0x7fea7ac53000, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x13000) = 0x7fea7ac53000
close(3)                                = 0
openat(AT_FDCWD, "/usr/lib/libQt5Widgets.so.5", O_RDONLY|O_CLOEXEC) = 3
read(3, "\177ELF\2\1\1\3\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0`\243\24\0\0\0\0\0"..., 832) = 832
fstat(3, {st_mode=S_IFREG|0755, st_size=6655152, ...}) = 0
mmap(NULL, 8750856, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7fea7a1e0000
mprotect(0x7fea7a807000, 2093056, PROT_NONE) = 0
mmap(0x7fea7aa06000, 208896, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x626000) = 0x7fea7aa06000
close(3)                                = 0
openat(AT_FDCWD, "/usr/lib/libQt5Gui.so.5", O_RDONLY|O_CLOEXEC) = 3
read(3, "\177ELF\2\1\1\3\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0000\330\f\0\0\0\0\0"..., 832) = 832
fstat(3, {st_mode=S_IFREG|0755, st_size=6007192, ...}) = 0
mmap(NULL, 8122056, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7fea79a20000
mprotect(0x7fea79fc5000, 2097152, PROT_NONE) = 0
mmap(0x7fea7a1c5000, 86016, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x5a5000) = 0x7fea7a1c5000
mmap(0x7fea7a1da000, 20168, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x7fea7a1da000
close(3)                                = 0
openat(AT_FDCWD, "/usr/lib/tls/x86_64/x86_64/libQt5Core.so.5", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
stat("/usr/lib/tls/x86_64/x86_64", 0x7fffe4996340) = -1 ENOENT (No such file or directory)
openat(AT_FDCWD, "/usr/lib/tls/x86_64/libQt5Core.so.5", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
stat("/usr/lib/tls/x86_64", 0x7fffe4996340) = -1 ENOENT (No such file or directory)
openat(AT_FDCWD, "/usr/lib/tls/x86_64/libQt5Core.so.5", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
stat("/usr/lib/tls/x86_64", 0x7fffe4996340) = -1 ENOENT (No such file or directory)
openat(AT_FDCWD, "/usr/lib/tls/libQt5Core.so.5", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
stat("/usr/lib/tls", 0x7fffe4996340)    = -1 ENOENT (No such file or directory)
openat(AT_FDCWD, "/usr/lib/x86_64/x86_64/libQt5Core.so.5", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
stat("/usr/lib/x86_64/x86_64", 0x7fffe4996340) = -1 ENOENT (No such file or directory)
openat(AT_FDCWD, "/usr/lib/x86_64/libQt5Core.so.5", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
stat("/usr/lib/x86_64", 0x7fffe4996340) = -1 ENOENT (No such file or directory)
openat(AT_FDCWD, "/usr/lib/x86_64/libQt5Core.so.5", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
stat("/usr/lib/x86_64", 0x7fffe4996340) = -1 ENOENT (No such file or directory)
openat(AT_FDCWD, "/usr/lib/libQt5Core.so.5", O_RDONLY|O_CLOEXEC) = 3
read(3, "\177ELF\2\1\1\3\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0\200]\t\0\0\0\0\0"..., 832) = 832
lseek(3, 5195652, SEEK_SET)             = 5195652
read(3, "\4\0\0\0\20\0\0\0\1\0\0\0GNU\0\0\0\0\0\3\0\0\0\21\0\0\0\0\0\0\0", 32) = 32
close(3)                                = 0
stat("/usr/lib", {st_mode=S_IFDIR|0755, st_size=512, ...}) = 0
writev(2, [{iov_base="pinentry-qt", iov_len=11}, {iov_base=": ", iov_len=2}, {iov_base="error while loading shared libra"..., iov_len=36}, {iov_base=": ", iov_len=2}, {iov_base="libQt5Core.so.5", iov_len=15}, {iov_base=": ", iov_len=2}, {iov_base="cannot open shared object file", iov_len=30}, {iov_base=": ", iov_len=2}, {iov_base="No such file or directory", iov_len=25}, {iov_base="\n", iov_len=1}], 10pinentry-qt: error while loading shared libraries: libQt5Core.so.5: cannot open shared object file: No such file or directory
) = 126
exit_group(127)                         = ?
+++ exited with 127 +++

[therealkenc]

Your openat() succeeded as well, just like the OP.

openat(AT_FDCWD, "/usr/lib/libQt5Core.so.5", O_RDONLY|O_CLOEXEC) = 3

What is required here is a set of repro steps from a Xenial commandline.

[Gelmo]

I'm having the same issue yuk7 (@yuk7) and I'm using your Arch setup, as well. Getting the issue when compiling QT apps.

[therealkenc]

Long enough on need-repro pile. If the problem can be pinned on rename2() (not clear either way) then a test case in a new issue would be most welcome.