lx: alpine zone upgraded to 3.13 can't reboot anymore

[janv37]

Hello smartos-live,

I'm using many alpine linux zones (LX), update (from: 19aa3328-0025-11e7-a19a-c39077bfd4cf) to latest 3.13 breaks reboot functionality.

66c60285-54af-ee40-ca60-904aade29c33:~# reboot
reboot: (null): Operation not permitted

66c60285-54af-ee40-ca60-904aade29c33:~# strace -s 65535 -f reboot
execve("/sbin/reboot", ["reboot"], 0x7fffffeffc58 /* 14 vars */) = 0
arch_prctl(ARCH_SET_FS, 0x7fffef38db48) = 0
set_tid_address(0x7fffef38df90)         = 12430
brk(NULL)                               = 0x1000
brk(0x3000)                             = 0x3000
mmap(0x1000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x1000
mprotect(0x7fffef38a000, 4096, PROT_READ) = 0
mprotect(0x7fffef456000, 16384, PROT_READ) = 0
getuid()                                = 0
nanosleep({tv_sec=0, tv_nsec=0}, 0x7fffffeffb50) = 0
sync()                                  = 0
kill(1, SIGTERM)                        = -1 EPERM (Operation not permitted)
access("/proc/meminfo", F_OK)           = 0
write(2, "reboot: (null): Operation not permitted\n", 40reboot: (null): Operation not permitted
) = 40
exit_group(1 <unfinished ...>
+++ exited with 1 +++

66c60285-54af-ee40-ca60-904aade29c33:~# kill -1 1
ash: can't kill pid 1: Operation not permitted

I've reported this upstream on 20210115, but not much has happened there: https://gitlab.alpinelinux.org/alpine/aports/-/issues/12302

• reboot -f in zone works, but is forceful
• the breakage seems to be in busybox shipped with Alpine 3.13, downgrading and pinning the busybox package (1.32.1-r2 -> 1.31.1-r19) is a workaround, but ticking bomb too:

# cat /etc/apk/repositories 
http://dl-cdn.alpinelinux.org/alpine/v3.13/main
http://dl-cdn.alpinelinux.org/alpine/v3.12/main
http://dl-cdn.alpinelinux.org/alpine/v3.13/community

// downgrade 3.13's busybox and pin version
# apk add busybox==1.31.1-r19
(1/2) Downgrading busybox (1.32.1-r0 -> 1.31.1-r19)
Executing busybox-1.31.1-r19.post-upgrade
(2/2) Downgrading ssl_client (1.32.1-r0 -> 1.31.1-r19)
Executing busybox-1.31.1-r19.trigger
OK: 256 MiB in 86 packages

• re-verified this behavior now (20210128) on SunOS kairoshv 5.11 joyent_20210114T163038Z i86pc i386 i86pc and fully patched alpine.

This is above my skill level with both smartos and linux. Can anybody more skilled please look into this from smartos side too?

Thank you, JV

[teutat3s]

Just came across this as well on alpine 3.15 lx brand with busybox 1.34.1 - the last information in the upstream bug is

it looks like the SIGTERM handler for /sbin/init isnt getting registered correctly with busybox 1.32

It seems this is still an issue and alpine 3.13 will be EOL'd in November 2022.

Can I do anything to help debug this?

[peterkelm]

Same with alpine 3.18 lx zones on up-to-date smartOS. BusyBox is at v1.36.0. Any thought on how to get this resolved?

[janv37]

Hi, 3.18 LX alpine linux with busybox 1.36.0 from: b5d89e30-128d-4ea4-824f-8e36fd7e3703 alpine-3 20230721 linux lx-dataset 2023-07-21

works just fine. this could be closed as fixed. Tested on joyent_20230828T151332Z. JV