[LU-17405] Executable created with gcc gives ELF interpreter error (2.15 client w/ 2.12 server)

Related — Wed, 31 Jan 2024 21:39:46 +0000

I noticed this problem while testing Lustre 2.15 client on a system with 2.12.6 servers.

The behavior is different with csh and bash. With csh, ./a.out isn't there until I run the ls. With bash, it runs after the ELF interpreter error. This is reproducible every time.

csh case (a.out not found until the ls is run)

$ gcc hello.c

$ ./a.out

./a.out: Command not found

$ ./a.out

./a.out: Command not found

$ ./a.out

./a.out: Command not found

$ ls a.out

a.out

$ ./a.out

hello world

bash case (a.out works after the bad ELF interpreter error)

$ gcc hello.c

$ ./a.out

bash: ./a.out: /lib64/ld-linux-x86-64.so.2: bad ELF interpreter: No such file or directory

$ ./a.out

hello world

The main thing I've noticed in the client debug log:

running a.out

file.c:2012:ll_file_read_iter() file a.out:[0x2000XXXXX:0x9:0x0], ppos: 0, count: 80

file.c:2012:ll_file_read_iter() file a.out:[0x2000XXXXX:0x9:0x0], ppos: 6456, count: 1984

file.c:2012:ll_file_read_iter() file a.out:[0x2000XXXXX:0x9:0x0], ppos: 6186, count: 268

file.c:2012:ll_file_read_iter() file a.out:[0x2000XXXXX:0x9:0x0], ppos: 64, count: 504

file.c:2012:ll_file_read_iter() file a.out:[0x2000XXXXX:0x9:0x0], ppos: 568, count: 200

running a.out again

file.c:2012:ll_file_read_iter() file a.out:[0x2000XXXXX:0x9:0x0], ppos: 0, count: 128

file.c:2012:ll_file_read_iter() file a.out:[0x2000XXXXX:0x9:0x0], ppos: 64, count: 504

file.c:2012:ll_file_read_iter() file a.out:[0x2000XXXXX:0x9:0x0], ppos: 568, count: 28

Whamcloud Community JIRA

[LU-17405] Executable created with gcc gives ELF interpreter error (2.15 client w/ 2.12 server)