Public bug reported: The Debian patch 'path_max' causes failures when readlink'ing symlinks that involve /proc/self (and potentially other symlinks in /proc) which report st_size == 0.
It uses st_size as a buffer size for readlink(), which then fails with EINVAL. This breaks the nodejs test-case test-fs-realpath-pipe.js on s390x and LXD containers (which symlink /dev/stdin to /proc/self/fd/0 vs. fd/0 as in amd64 non-container): $ strace -E LD_LIBRARY_PATH=/usr/local/lib/ -f -e lstat,readlink \ node test/parallel/test-fs-realpath-pipe.js [pid 17785] lstat("/dev", {st_mode=S_IFDIR|0755, st_size=480, ...}) = 0 [pid 17786] lstat("/dev/stdin", {st_mode=S_IFLNK|0777, st_size=15, ...}) = 0 [pid 17788] lstat("/dev/stdin", {st_mode=S_IFLNK|0777, st_size=15, ...}) = 0 [pid 17788] readlink("/dev/stdin", "/proc/self/fd/0", 15) = 15 [pid 17785] lstat("/proc", {st_mode=S_IFDIR|0555, st_size=0, ...}) = 0 [pid 17786] lstat("/proc/self", {st_mode=S_IFLNK|0777, st_size=0, ...}) = 0 [pid 17788] lstat("/proc/self", {st_mode=S_IFLNK|0777, st_size=0, ...}) = 0 [pid 17788] readlink("/proc/self", 0x7f2a6c000b40, 0) = -1 EINVAL (Invalid argument) I'll submit a patch shortly. ** Affects: libuv1 (Ubuntu) Importance: Undecided Status: New -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1792647 Title: fix nodejs test-case failure on s390x and LXD To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/libuv1/+bug/1792647/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs