Hello,
=-==-=
this seems to be a related problem. After upgrading to libc6 2.3.2-5 the
adduser script stalled every time I tried to add a new user. After doing
strace this came out:
[snip]
open("/etc/group", O_RDONLY) = 3
fcntl64(3, F_GETFD) = 0
fcntl64(3, F_SETFD, FD_CLOEXEC) = 0
_llseek(3, 0, [0], SEEK_CUR) = 0
fstat64(3, {st_mode=S_IFREG|0644, st_size=9989, ...}) = 0
mmap2(NULL, 9989, PROT_READ, MAP_SHARED, 3, 0) = 0x22283000
_llseek(3, 9989, [9989], SEEK_SET) = 0
_llseek(3, 573, [573], SEEK_SET) = 0
munmap(0x22283000, 9989) = 0
close(3) = 0
open("/etc/group", O_RDONLY) = 3
fcntl64(3, F_GETFD) = 0
fcntl64(3, F_SETFD, FD_CLOEXEC) = 0
_llseek(3, 0, [0], SEEK_CUR) = 0
fstat64(3, {st_mode=S_IFREG|0644, st_size=9989, ...}) = 0
mmap2(NULL, 9989, PROT_READ, MAP_SHARED, 3, 0) = 0x22283000
_llseek(3, 9989, [9989], SEEK_SET) = 0
_llseek(3, 573, [573], SEEK_SET) = 0
munmap(0x22283000, 9989) = 0
close(3) = 0
[snip]
This loop repeats itself ad infinitum. Unfortunately I don't know which
libc6 function went crazy here.
It is confirmed that this problem appears also in earlier patch levels of
libc6 2.3.2 (the 2.3.2-2 has the same bug). Contrary to what has been said
here, it doesn't help to remove the "compat" keyword from the
/etc/nsswitch.conf file, the problem remains. But it definitely appears
if some lines in /etc/group are unusually long. After removing these lines
from /etc/group the problem doesn't appear (and the adduser script works
fine).
If there is any information that can be useful to you don't hesitate to
contact me! Thanks!
Regards,
Peter
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