Seems to be a regression from JDK-8256155. The VM should exit with an error gracefully instead of asserting.

java -XX:+UseLargePages -XX:LargePageSizeInBytes=6 -version

# A fatal error has been detected by the Java Runtime Environment:
#
# Internal Error (workspace/open/src/hotspot/share/runtime/os.cpp:2449), pid=1885945, tid=1885946
# assert(is_power_of_2(page_size)) failed: page_size must be a power of 2: 0x6

Stack: [0x000076879d900000,0x000076879da00000], sp=0x000076879d9fc7d0, free space=1009k
Native frames: (J=compiled Java code, j=interpreted, Vv=VM code, C=native code)
V [libjvm.so+0x1bc6fb3] VMError::report(outputStream*, bool)+0x2f93 (os.cpp:2449)
V [libjvm.so+0x1bcaa23] VMError::report_and_die(int, char const*, char const*, __va_list_tag*, Thread*, unsigned char*, void const*, void const*, char const*, int, unsigned long)+0x5a3
V [libjvm.so+0xbf6a60] report_vm_error(char const*, int, char const*, char const*, ...)+0x100
V [libjvm.so+0x1749330] os::PageSizes::next_smaller(unsigned long) const+0x0
V [libjvm.so+0x175cb2c] os::Linux::large_page_init()+0x90c
V [libjvm.so+0x174c467] os::init_before_ergo()+0x47
V [libjvm.so+0x1af1aca] Threads::create_vm(JavaVMInitArgs*, bool*)+0x13a
V [libjvm.so+0x119c9f4] JNI_CreateJavaVM+0x54
C [libjli.so+0x3dff] JavaMain+0x8f
C [libjli.so+0x8019] ThreadJavaMain+0x9
C [libc.so.6+0x9caa4]