Unix & Linux
sudo crashes terminal but works from within a .sh file
UPDATE 24/12/2021
I had to Ctrl + C out of the accecpted answers find and grep code to try and find the culprit half way in order to restart due to something else but I will update this post once I've found the root problem.
However, the accepted answer's redefine sudo code was used by me to fix the issue and I can sudo away without crashing!
So, for anyone else that may have the issue before I find the source problem here is what I did:
.bashrc
A the bottom of my .bashrc file
# https://unix.stackexchange.com/a/683619/344030
if [ -f ~/.sudo-fix ]; then
source ~/.sudo-fix
else
echo ' Unable to find ~/.sudo-fix so sudo may break again. look in Dropbox/Projects/hplaptop/sudo-broken/.sudo-fix for file to copy to home'
fi
.sudo-fix
#!/bin/bash
#
# hplaptop fix only - https://unix.stackexchange.com/a/683619/344030
#
# Redefine sudo to reuse the last command if no args
sudo() {
if [ $# -gt 0 ]
then command sudo "$@"
else command sudo "${BASH:-bash}" -c "$(history -p '!!')"
fi
}
Thank you @roaima
UPDATE 23/12/2021
From some of the questions from the comments:
Can I log in as root?:
I can and have done, as it's Ubuntu the root user is disabled, but I was able to in my test.sh add sudo passwd root and gave myself a password.
Then once this is all fixed I will disable it again with sudo passwd -l root either in the terminal directly as the problem will be fixed or again in test.sh if I have to stick with this odd workaround.
Does sudo date also trigger this?
Yes sudo date also triggers the issue, Any sudo command does it unless as I say the sudo command is in a .sh and called.
Difference between bash and sh
Changing the shebang in my test.sh file makes no difference. It still works.
-#!/bin/bash
+#!/bin/sh
Shell Info
echo "$SHELL"
/bin/bash
Please add the result of running type sudo to your question
This wasn't what I was expecting, to be fair.
type sudo
sudo is a function
sudo ()
{
if [ "$1" ]; then
sudo $@;
else
sudo "$BASH" -c "$(history -p !!)";
fi
}
As this wasnt't what I was expecting I ran the following to see if that sudo function was in a file somewhere but it was only in the markdown file that is this post.
I also ran which sudo
rg -l -F 'sudo ()'
Dropbox/Projects/hplaptop/sudo-broken/readme.md
which sudo
/usr/bin/sudo
strace sudo
In the original question I mention strace sudo so for completeness here it is
strace sudo
execve("/usr/bin/sudo", ["sudo"], 0x7ffff0ccfa10 /* 74 vars */) = 0
access("/etc/suid-debug", F_OK) = -1 ENOENT (No such file or directory)
brk(NULL) = 0x55fb4fd7e000
arch_prctl(0x3001 /* ARCH_??? */, 0x7ffe69316ac0) = -1 EINVAL (Invalid argument)
fcntl(0, F_GETFD) = 0
fcntl(1, F_GETFD) = 0
fcntl(2, F_GETFD) = 0
access("/etc/suid-debug", F_OK) = -1 ENOENT (No such file or directory)
access("/etc/ld.so.preload", R_OK) = -1 ENOENT (No such file or directory)
openat(AT_FDCWD, "/usr/lib/sudo/tls/haswell/x86_64/libaudit.so.1", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
stat("/usr/lib/sudo/tls/haswell/x86_64", 0x7ffe69315d10) = -1 ENOENT (No such file or directory)
openat(AT_FDCWD, "/usr/lib/sudo/tls/haswell/libaudit.so.1", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
stat("/usr/lib/sudo/tls/haswell", 0x7ffe69315d10) = -1 ENOENT (No such file or directory)
openat(AT_FDCWD, "/usr/lib/sudo/tls/x86_64/libaudit.so.1", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
stat("/usr/lib/sudo/tls/x86_64", 0x7ffe69315d10) = -1 ENOENT (No such file or directory)
openat(AT_FDCWD, "/usr/lib/sudo/tls/libaudit.so.1", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
stat("/usr/lib/sudo/tls", 0x7ffe69315d10) = -1 ENOENT (No such file or directory)
openat(AT_FDCWD, "/usr/lib/sudo/haswell/x86_64/libaudit.so.1", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
stat("/usr/lib/sudo/haswell/x86_64", 0x7ffe69315d10) = -1 ENOENT (No such file or directory)
openat(AT_FDCWD, "/usr/lib/sudo/haswell/libaudit.so.1", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
stat("/usr/lib/sudo/haswell", 0x7ffe69315d10) = -1 ENOENT (No such file or directory)
openat(AT_FDCWD, "/usr/lib/sudo/x86_64/libaudit.so.1", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
stat("/usr/lib/sudo/x86_64", 0x7ffe69315d10) = -1 ENOENT (No such file or directory)
openat(AT_FDCWD, "/usr/lib/sudo/libaudit.so.1", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
stat("/usr/lib/sudo", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
openat(AT_FDCWD, "/etc/ld.so.cache", O_RDONLY|O_CLOEXEC) = 3
fstat(3, {st_mode=S_IFREG|0644, st_size=142209, ...}) = 0
mmap(NULL, 142209, PROT_READ, MAP_PRIVATE, 3, 0) = 0x7f2bea9e9000
close(3) = 0
openat(AT_FDCWD, "/lib/x86_64-linux-gnu/libaudit.so.1", 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\3407\0\0\0\0\0\0"..., 832) = 832
fstat(3, {st_mode=S_IFREG|0644, st_size=133200, ...}) = 0
mmap(NULL, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f2bea9e7000
mmap(NULL, 176296, PROT_READ, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7f2bea9bb000
mprotect(0x7f2bea9be000, 118784, PROT_NONE) = 0
mmap(0x7f2bea9be000, 32768, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x3000) = 0x7f2bea9be000
mmap(0x7f2bea9c6000, 81920, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0xb000) = 0x7f2bea9c6000
mmap(0x7f2bea9db000, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x1f000) = 0x7f2bea9db000
mmap(0x7f2bea9dd000, 37032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x7f2bea9dd000
close(3) = 0
openat(AT_FDCWD, "/usr/lib/sudo/libselinux.so.1", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
openat(AT_FDCWD, "/lib/x86_64-linux-gnu/libselinux.so.1", 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@p\0\0\0\0\0\0"..., 832) = 832
fstat(3, {st_mode=S_IFREG|0644, st_size=163200, ...}) = 0
mmap(NULL, 174600, PROT_READ, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7f2bea990000
mprotect(0x7f2bea996000, 135168, PROT_NONE) = 0
mmap(0x7f2bea996000, 102400, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x6000) = 0x7f2bea996000
mmap(0x7f2bea9af000, 28672, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x1f000) = 0x7f2bea9af000
mmap(0x7f2bea9b7000, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x26000) = 0x7f2bea9b7000
mmap(0x7f2bea9b9000, 6664, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x7f2bea9b9000
close(3) = 0
openat(AT_FDCWD, "/usr/lib/sudo/libutil.so.1", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
openat(AT_FDCWD, "/lib/x86_64-linux-gnu/libutil.so.1", 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\340\23\0\0\0\0\0\0"..., 832) = 832
fstat(3, {st_mode=S_IFREG|0644, st_size=14848, ...}) = 0
mmap(NULL, 16656, PROT_READ, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7f2bea98b000
mmap(0x7f2bea98c000, 4096, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x1000) = 0x7f2bea98c000
mmap(0x7f2bea98d000, 4096, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x2000) = 0x7f2bea98d000
mmap(0x7f2bea98e000, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x2000) = 0x7f2bea98e000
close(3) = 0
openat(AT_FDCWD, "/usr/lib/sudo/libsudo_util.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|0644, st_size=105312, ...}) = 0
mmap(NULL, 108824, PROT_READ, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7f2bea970000
mmap(0x7f2bea975000, 61440, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x5000) = 0x7f2bea975000
mmap(0x7f2bea984000, 20480, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x14000) = 0x7f2bea984000
mmap(0x7f2bea989000, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x18000) = 0x7f2bea989000
close(3) = 0
openat(AT_FDCWD, "/usr/lib/sudo/libc.so.6", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
openat(AT_FDCWD, "/lib/x86_64-linux-gnu/libc.so.6", 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\360q\2\0\0\0\0\0"..., 832) = 832
pread64(3, "\6\0\0\0\4\0\0\0@\0\0\0\0\0\0\0@\0\0\0\0\0\0\0@\0\0\0\0\0\0\0"..., 784, 64) = 784
pread64(3, "\4\0\0\0\20\0\0\0\5\0\0\0GNU\0\2\0\0\300\4\0\0\0\3\0\0\0\0\0\0\0", 32, 848) = 32
pread64(3, "\4\0\0\0\24\0\0\0\3\0\0\0GNU\0\t\233\222%\274\260\320\31\331\326\10\204\276X>\263"..., 68, 880) = 68
fstat(3, {st_mode=S_IFREG|0755, st_size=2029224, ...}) = 0
pread64(3, "\6\0\0\0\4\0\0\0@\0\0\0\0\0\0\0@\0\0\0\0\0\0\0@\0\0\0\0\0\0\0"..., 784, 64) = 784
pread64(3, "\4\0\0\0\20\0\0\0\5\0\0\0GNU\0\2\0\0\300\4\0\0\0\3\0\0\0\0\0\0\0", 32, 848) = 32
pread64(3, "\4\0\0\0\24\0\0\0\3\0\0\0GNU\0\t\233\222%\274\260\320\31\331\326\10\204\276X>\263"..., 68, 880) = 68
mmap(NULL, 2036952, PROT_READ, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7f2bea77e000
mprotect(0x7f2bea7a3000, 1847296, PROT_NONE) = 0
mmap(0x7f2bea7a3000, 1540096, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x25000) = 0x7f2bea7a3000
mmap(0x7f2bea91b000, 303104, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x19d000) = 0x7f2bea91b000
mmap(0x7f2bea966000, 24576, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x1e7000) = 0x7f2bea966000
mmap(0x7f2bea96c000, 13528, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x7f2bea96c000
close(3) = 0
openat(AT_FDCWD, "/lib/x86_64-linux-gnu/libcap-ng.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\220$\0\0\0\0\0\0"..., 832) = 832
fstat(3, {st_mode=S_IFREG|0644, st_size=27064, ...}) = 0
mmap(NULL, 28984, PROT_READ, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7f2bea776000
mmap(0x7f2bea778000, 12288, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x2000) = 0x7f2bea778000
mmap(0x7f2bea77b000, 4096, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x5000) = 0x7f2bea77b000
mmap(0x7f2bea77c000, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x5000) = 0x7f2bea77c000
close(3) = 0
openat(AT_FDCWD, "/usr/lib/x86_64-linux-gnu/libpcre2-8.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\340\"\0\0\0\0\0\0"..., 832) = 832
fstat(3, {st_mode=S_IFREG|0644, st_size=584392, ...}) = 0
mmap(NULL, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f2bea774000
mmap(NULL, 586536, PROT_READ, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7f2bea6e4000
mmap(0x7f2bea6e6000, 409600, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x2000) = 0x7f2bea6e6000
mmap(0x7f2bea74a000, 163840, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x66000) = 0x7f2bea74a000
mmap(0x7f2bea772000, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x8d000) = 0x7f2bea772000
close(3) = 0
openat(AT_FDCWD, "/lib/x86_64-linux-gnu/libdl.so.2", 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 \22\0\0\0\0\0\0"..., 832) = 832
fstat(3, {st_mode=S_IFREG|0644, st_size=18816, ...}) = 0
mmap(NULL, 20752, PROT_READ, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7f2bea6de000
mmap(0x7f2bea6df000, 8192, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x1000) = 0x7f2bea6df000
mmap(0x7f2bea6e1000, 4096, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x3000) = 0x7f2bea6e1000
mmap(0x7f2bea6e2000, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x3000) = 0x7f2bea6e2000
close(3) = 0
openat(AT_FDCWD, "/lib/x86_64-linux-gnu/libpthread.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\220\201\0\0\0\0\0\0"..., 832) = 832
pread64(3, "\4\0\0\0\24\0\0\0\3\0\0\0GNU\0\345Ga\367\265T\320\374\301V)Yf]\223\337"..., 68, 824) = 68
fstat(3, {st_mode=S_IFREG|0755, st_size=157224, ...}) = 0
pread64(3, "\4\0\0\0\24\0\0\0\3\0\0\0GNU\0\345Ga\367\265T\320\374\301V)Yf]\223\337"..., 68, 824) = 68
mmap(NULL, 140408, PROT_READ, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7f2bea6bb000
mmap(0x7f2bea6c2000, 69632, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x7000) = 0x7f2bea6c2000
mmap(0x7f2bea6d3000, 20480, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x18000) = 0x7f2bea6d3000
mmap(0x7f2bea6d8000, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x1c000) = 0x7f2bea6d8000
mmap(0x7f2bea6da000, 13432, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x7f2bea6da000
close(3) = 0
mmap(NULL, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f2bea6b9000
arch_prctl(ARCH_SET_FS, 0x7f2bea6b9c80) = 0
mprotect(0x7f2bea966000, 12288, PROT_READ) = 0
mprotect(0x7f2bea6d8000, 4096, PROT_READ) = 0
mprotect(0x7f2bea6e2000, 4096, PROT_READ) = 0
mprotect(0x7f2bea772000, 4096, PROT_READ) = 0
mprotect(0x7f2bea77c000, 4096, PROT_READ) = 0
mprotect(0x7f2bea989000, 4096, PROT_READ) = 0
mprotect(0x7f2bea98e000, 4096, PROT_READ) = 0
mprotect(0x7f2bea9b7000, 4096, PROT_READ) = 0
mprotect(0x7f2bea9db000, 4096, PROT_READ) = 0
mprotect(0x55fb4fcaa000, 4096, PROT_READ) = 0
mprotect(0x7f2beaa39000, 4096, PROT_READ) = 0
munmap(0x7f2bea9e9000, 142209) = 0
set_tid_address(0x7f2bea6b9f50) = 321158
set_robust_list(0x7f2bea6b9f60, 24) = 0
rt_sigaction(SIGRTMIN, {sa_handler=0x7f2bea6c2bf0, sa_mask=[], sa_flags=SA_RESTORER|SA_SIGINFO, sa_restorer=0x7f2bea6d03c0}, NULL, 8) = 0
rt_sigaction(SIGRT_1, {sa_handler=0x7f2bea6c2c90, sa_mask=[], sa_flags=SA_RESTORER|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f2bea6d03c0}, NULL, 8) = 0
rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0
statfs("/sys/fs/selinux", 0x7ffe69316a10) = -1 ENOENT (No such file or directory)
statfs("/selinux", 0x7ffe69316a10) = -1 ENOENT (No such file or directory)
brk(NULL) = 0x55fb4fd7e000
brk(0x55fb4fd9f000) = 0x55fb4fd9f000
openat(AT_FDCWD, "/proc/filesystems", O_RDONLY|O_CLOEXEC) = 3
fstat(3, {st_mode=S_IFREG|0444, st_size=0, ...}) = 0
read(3, "nodev\tsysfs\nnodev\ttmpfs\nnodev\tbd"..., 1024) = 418
read(3, "", 1024) = 0
close(3) = 0
access("/etc/selinux/config", F_OK) = -1 ENOENT (No such file or directory)
prlimit64(0, RLIMIT_AS, NULL, {rlim_cur=RLIM64_INFINITY, rlim_max=RLIM64_INFINITY}) = 0
prlimit64(0, RLIMIT_AS, {rlim_cur=RLIM64_INFINITY, rlim_max=RLIM64_INFINITY}, NULL) = 0
prlimit64(0, RLIMIT_CPU, NULL, {rlim_cur=RLIM64_INFINITY, rlim_max=RLIM64_INFINITY}) = 0
prlimit64(0, RLIMIT_CPU, {rlim_cur=RLIM64_INFINITY, rlim_max=RLIM64_INFINITY}, NULL) = 0
prlimit64(0, RLIMIT_DATA, NULL, {rlim_cur=RLIM64_INFINITY, rlim_max=RLIM64_INFINITY}) = 0
prlimit64(0, RLIMIT_DATA, {rlim_cur=RLIM64_INFINITY, rlim_max=RLIM64_INFINITY}, NULL) = 0
prlimit64(0, RLIMIT_FSIZE, NULL, {rlim_cur=RLIM64_INFINITY, rlim_max=RLIM64_INFINITY}) = 0
prlimit64(0, RLIMIT_FSIZE, {rlim_cur=RLIM64_INFINITY, rlim_max=RLIM64_INFINITY}, NULL) = 0
prlimit64(0, RLIMIT_NOFILE, NULL, {rlim_cur=1024, rlim_max=1024*1024}) = 0
prlimit64(0, RLIMIT_NOFILE, {rlim_cur=RLIM64_INFINITY, rlim_max=RLIM64_INFINITY}, NULL) = -1 EPERM (Operation not permitted)
prlimit64(0, RLIMIT_NOFILE, {rlim_cur=256, rlim_max=RLIM64_INFINITY}, NULL) = -1 EPERM (Operation not permitted)
prlimit64(0, RLIMIT_NOFILE, {rlim_cur=1024*1024, rlim_max=1024*1024}, NULL) = 0
prlimit64(0, RLIMIT_NPROC, NULL, {rlim_cur=63493, rlim_max=63493}) = 0
prlimit64(0, RLIMIT_NPROC, {rlim_cur=RLIM64_INFINITY, rlim_max=RLIM64_INFINITY}, NULL) = -1 EPERM (Operation not permitted)
prlimit64(0, RLIMIT_NPROC, {rlim_cur=63493, rlim_max=63493}, NULL) = 0
prlimit64(0, RLIMIT_RSS, NULL, {rlim_cur=RLIM64_INFINITY, rlim_max=RLIM64_INFINITY}) = 0
prlimit64(0, RLIMIT_RSS, {rlim_cur=RLIM64_INFINITY, rlim_max=RLIM64_INFINITY}, NULL) = 0
prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0
prlimit64(0, RLIMIT_STACK, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}, NULL) = 0
fcntl(0, F_GETFL) = 0x402 (flags O_RDWR|O_APPEND)
fcntl(1, F_GETFL) = 0x402 (flags O_RDWR|O_APPEND)
fcntl(2, F_GETFL) = 0x402 (flags O_RDWR|O_APPEND)
openat(AT_FDCWD, "/usr/lib/locale/locale-archive", O_RDONLY|O_CLOEXEC) = 3
fstat(3, {st_mode=S_IFREG|0644, st_size=5699248, ...}) = 0
mmap(NULL, 5699248, PROT_READ, MAP_PRIVATE, 3, 0) = 0x7f2bea149000
close(3) = 0
openat(AT_FDCWD, "/etc/localtime", O_RDONLY|O_CLOEXEC) = 3
fstat(3, {st_mode=S_IFREG|0644, st_size=3678, ...}) = 0
fstat(3, {st_mode=S_IFREG|0644, st_size=3678, ...}) = 0
read(3, "TZif2\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\10\0\0\0\10\0\0\0\0"..., 4096) = 3678
lseek(3, -2338, SEEK_CUR) = 1340
read(3, "TZif2\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\10\0\0\0\10\0\0\0\0"..., 4096) = 2338
close(3) = 0
stat("/etc/sudo.conf", 0x7ffe69316710) = -1 ENOENT (No such file or directory)
geteuid() = 1000
access("/home/solrevdev/.cargo/bin/sudo", X_OK) = -1 ENOENT (No such file or directory)
access("/home/solrevdev/.cargo/bin/sudo", X_OK) = -1 ENOENT (No such file or directory)
access("/home/solrevdev/.local/bin/sudo", X_OK) = -1 ENOENT (No such file or directory)
access("/home/solrevdev/.cargo/bin/sudo", X_OK) = -1 ENOENT (No such file or directory)
access("/home/solrevdev/.local/bin/sudo", X_OK) = -1 ENOENT (No such file or directory)
access("/usr/local/sbin/sudo", X_OK) = -1 ENOENT (No such file or directory)
access("/usr/local/bin/sudo", X_OK) = -1 ENOENT (No such file or directory)
access("/usr/sbin/sudo", X_OK) = -1 ENOENT (No such file or directory)
access("/usr/bin/sudo", X_OK) = 0
stat("/usr/bin/sudo", {st_mode=S_IFREG|S_ISUID|0755, st_size=166056, ...}) = 0
openat(AT_FDCWD, "/usr/share/locale/locale.alias", O_RDONLY|O_CLOEXEC) = 3
fstat(3, {st_mode=S_IFREG|0644, st_size=2996, ...}) = 0
read(3, "# Locale name alias data base.\n#"..., 4096) = 2996
read(3, "", 4096) = 0
close(3) = 0
openat(AT_FDCWD, "/usr/share/locale/en_GB/LC_MESSAGES/sudo.mo", O_RDONLY) = -1 ENOENT (No such file or directory)
openat(AT_FDCWD, "/usr/share/locale/en/LC_MESSAGES/sudo.mo", O_RDONLY) = -1 ENOENT (No such file or directory)
openat(AT_FDCWD, "/usr/share/locale-langpack/en_GB/LC_MESSAGES/sudo.mo", O_RDONLY) = 3
fstat(3, {st_mode=S_IFREG|0644, st_size=1571, ...}) = 0
mmap(NULL, 1571, PROT_READ, MAP_PRIVATE, 3, 0) = 0x7f2beaa38000
close(3) = 0
openat(AT_FDCWD, "/usr/share/locale-langpack/en/LC_MESSAGES/sudo.mo", O_RDONLY) = -1 ENOENT (No such file or directory)
write(2, "sudo", 4sudo) = 4
write(2, ": ", 2: ) = 2
write(2, "effective uid is not 0, is /usr/"..., 133effective uid is not 0, is /usr/bin/sudo on a file system with the 'nosuid' option set or an NFS file system without root privileges?) = 133
write(2, "\n", 1
) = 1
exit_group(1) = ?
+++ exited with 1 +++
Something odd has started happening on my laptop running Ubuntu 20.04
When I open a terminal (either the default one or Terminator) and try to run any sudo command for example sudo ls it will hang, then just close/crash the terminal.
It is consistent and survives reboots etc.
It does not even get to the stage where it will ask for password.
However, if I create a test.sh file and run that e.g ./test.sh then any sudo command will work as expected. It will ask for password then work.
For example, this works:
test.sh
#!/bin/bash
echo 'sudo will work from here and ask for password and list dir'
echo '----------------------------------------------------------'
echo ''
echo ''
sudo ls
But in a terminal window, this crashes:
sudo ls
I've Googled, and Stack Overflow'd everything I can think of, I've not installed anything new as the laptop hasn't been doing anything for a while.
I've run strace sudo which led me to a superuser post which I tried, but that did not work:
https://superuser.com/a/1580324
Hold space when booting Pop!_OS
Select Recovery, which brings up the OS installer
SUPER + T to bring up terminal
sudo -i to switch to root
mount -o remount,rw /
mount --all
chown root:root /usr/bin/sudo
chmod 4755 /usr/bin/sudo
Restart Pop!_OS and login normally
Now I am able to run sudo commands such as sudo apt install python3-virtualenv without issues... so far.
So before I try anything else, I thought I would ask for some help or assistance as I'm not sure what to do next.
Any help would be appreciated.
OS Info
solrevdev@hplaptop
OS: Ubuntu 20.04 focal
Kernel: x86_64 Linux 5.4.0-91-generic
Uptime: 11m
Packages: 3208
Shell: bash 5.0.17
Resolution: 1920x1080
DE: GNOME 3.36.5
WM: Mutter
WM Theme:
GTK Theme: Yaru [GTK2/3]
Icon Theme: Yaru
Font: Ubuntu 11
Disk: 148G / 249G (63%)
CPU: Intel Core i5-7200U @ 4x 3.1GHz [46.0C]
GPU: Mesa Intel(R) HD Graphics 620 (KBL GT2)
RAM: 3632MiB / 15930MiB
Solution
So, we've identified why sudo isn't working properly. It looks like what it's trying to do is to redefine just a solo sudo without arguments to mean repeat the last command you've entered, but with sudo as a prefix.
Clever idea but broken implementation - the unquoted $@ must be enclosed in double quotes for it to work properly, and to avoid recursion the sudo command must be used inside the function rather than the function itself:
# Redefine sudo to reuse the last command if no args
sudo() {
if [ $# -gt 0 ]
then command sudo "$@"
else command sudo "${BASH:-bash}" -c "$(history -p '!!')"
fi
}
Now, to find where it's defined is going to be harder. This command would be a good starting point (similar to what I assume is your recursive grep but that allows for the space between the function name and the () to be optional, as well as excluding irrelevant directories):
command sudo find / \( -path '/dev' -o -path '/proc' -o -path '/run' -o -path 'sys' \) -prune -o -type f -exec grep -l 'sudo *()' {} +
Once you've found it I would recommend you submit a bug report. (Assuming it works for you, you'd be welcome to suggest the code I've provided as a fix.)
Comments (3)
- +0 – Thanks so much, I am running that now, but interestingly I forgot to put that in my
test.shfile and pasted in the terminal and expected it to crash, but it's working. So in another window I typedcommand sudo lsand that works! So the prefixcommandis another workaround. Hopefully I can find the culprit in the result of yourfindcommand. — Dec 23, 2021 at 09:48 - +0 –
command sudoworks in my terminal without crashing at least that saves me having to run everything through atest.shfile for now.! — Dec 23, 2021 at 09:53 - +1 – Thanks very much, I can now happily sudo again in my terminal and will update the post once I've found the culprit. Have a great xmas! — Dec 24, 2021 at 08:18
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