OpenWrt's UML with 5.15 was producing odd errors/warnings during preinit part of the early userspace portion:
|[ 0.000000] Kernel command line: ubd0=root.img root=98:0 console=tty |[...] |[ 0.440000] random: jshn: uninitialized urandom read (4 bytes read) |[ 0.460000] random: jshn: uninitialized urandom read (4 bytes read) |/etc/preinit: line 47: can't create /dev/tty: No such device or address |/etc/preinit: line 48: can't create /dev/tty: No such device or address |/etc/preinit: line 58: can't open /dev/tty: No such device or address |[...] repeated many times That "/dev/tty" came from the command line (which is automatically added if no console= parameter was specified for the uml binary). The TLDP project tells the following about the /dev/tty: <https://tldp.org/HOWTO/Text-Terminal-HOWTO-7.html#ss7.3> | /dev/tty stands for the controlling terminal (if any) for the current | process.[...] | /dev/tty is something like a link to the actually terminal device[..] The "(if any)" is important here, since it's possible for processes to not have a controlling terminal. I think this was a simple typo and the author wanted tty0 there. CC: Thomas Meyer <tho...@m3y3r.de> Fixes: d7ffac33631b ("um: stdio_console: Make preferred console") Signed-off-by: Christian Lamparter <chunk...@gmail.com> --- arch/um/kernel/um_arch.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/um/kernel/um_arch.c b/arch/um/kernel/um_arch.c index 9838967d0b2f..9c6991f42131 100644 --- a/arch/um/kernel/um_arch.c +++ b/arch/um/kernel/um_arch.c @@ -32,7 +32,7 @@ #include "um_arch.h" #define DEFAULT_COMMAND_LINE_ROOT "root=98:0" -#define DEFAULT_COMMAND_LINE_CONSOLE "console=tty" +#define DEFAULT_COMMAND_LINE_CONSOLE "console=tty0" /* Changed in add_arg and setup_arch, which run before SMP is started */ static char __initdata command_line[COMMAND_LINE_SIZE] = { 0 }; -- 2.36.1 _______________________________________________ linux-um mailing list linux-um@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-um
