Musl 1.2.2 requires --disable-sandbox

Question

Musl 1.2.2 requires --disable-sandbox

Closed this issue 3 years ago · 4 comments

Hello,
latest master requires the sandbox to be disabled on my musl system.

Answer 1 · 2021-05-30T17:38:51.000Z

latest `master` requires the sandbox to be disabled on my musl system.

Thanks for the report. Try running: strace -f rdrview -H 'https://github.com/eafer/rdrview' 2>&1 >/dev/null | grep EPERM and send me the output. That should tell us which syscalls are getting blocked.

Answer 2 · 2021-05-30T17:59:48.000Z

Here you go:

[pid 24984] mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = -1 EPERM (Operation not permitted)
[pid 24984] rt_sigprocmask(SIG_BLOCK, ~[RTMIN RT_1 RT_2], 0x7ffff841abd0, 8) = -1 EPERM (Operation not permitted)
[pid 24984] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = -1 EPERM (Operation not permitted)

Answer 3 · 2021-05-30T20:52:41.000Z

[pid 24984] mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = -1 EPERM (Operation not permitted)

I just pushed a patch to allow mmap(), let me know if it helps.

Answer 4 · 2021-05-30T21:50:48.000Z

This was fast. It does work now again. Thank you!