autofs/automount crashes

cross-posted from https://gitlab.alpinelinux.org/alpine/aports/-/issues/13281

▶ docker run --rm -ti --privileged alpine:3.16.2 
/ # apk update
fetch https://dl-cdn.alpinelinux.org/alpine/v3.16/main/x86_64/APKINDEX.tar.gz
fetch https://dl-cdn.alpinelinux.org/alpine/v3.16/community/x86_64/APKINDEX.tar.gz
v3.16.2-41-g8d6de99bbd [https://dl-cdn.alpinelinux.org/alpine/v3.16/main]
v3.16.2-38-ga761a9fe9d [https://dl-cdn.alpinelinux.org/alpine/v3.16/community]
OK: 17024 distinct packages available
/ # apk add autofs
(1/8) Installing libtirpc-conf (1.3.2-r1)
(2/8) Installing krb5-conf (1.0-r2)
(3/8) Installing libcom_err (1.46.5-r0)
(4/8) Installing keyutils-libs (1.6.3-r1)
(5/8) Installing libverto (0.3.2-r0)
(6/8) Installing krb5-libs (1.19.3-r0)
(7/8) Installing libtirpc (1.3.2-r1)
(8/8) Installing autofs (5.1.8-r0)
Executing busybox-1.35.0-r17.trigger
OK: 9 MiB in 22 packages
/ # automount -fv
failed to open config /etc/autofs/autofs.conf
failed to open old config /etc/conf.d/autofs
Segmentation fault (core dumped)
/ # touch /etc/autofs/autofs.conf
/ # automount -fv
Segmentation fault (core dumped)

strace last lines:

open("/run/autofs-running.22", O_WRONLY|O_CREAT|O_LARGEFILE|O_CLOEXEC, 0644) = 3
fcntl(3, F_SETFD, FD_CLOEXEC)           = 0
close(3)                                = 0
link("/run/autofs-running.22", "/run/autofs-running") = 0
unlink("/run/autofs-running.22")        = 0
open("/run/autofs-running", O_RDWR|O_LARGEFILE|O_CLOEXEC) = 3
fcntl(3, F_SETFD, FD_CLOEXEC)           = 0
getpid()                                = 22
write(3, "22\n", 3)                     = 3
close(3)                                = 0
--- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
+++ killed by SIGSEGV (core dumped) +++
Segmentation fault (core dumped)

the gdb backtrace:

(gdb) bt
#0  0x00007ffff7fba96e in tss_get () from /lib/ld-musl-x86_64.so.1
#1  0x00007ffff7f4ef9c in ?? () from /usr/lib/libautofs.so
#2  0x00007ffff7f4f0ff in log_info () from /usr/lib/libautofs.so
#3  0x000055555555cca1 in main ()

alpinelinux / docker-alpine

autofs/automount crashes #275