lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
Open Source and information security mailing list archives
| ||
|
Date: Sat, 6 Dec 2008 03:10:33 +0100 From: "Kay Sievers" <kay.sievers@...y.org> To: "Evgeniy Polyakov" <zbr@...emap.net> Cc: "Alan Cox" <alan@...rguk.ukuu.org.uk>, linux-kernel@...r.kernel.org Subject: Re: Runaway loop with the current git. On Fri, Dec 5, 2008 at 22:24, Evgeniy Polyakov <zbr@...emap.net> wrote: > On Fri, Dec 05, 2008 at 10:17:01PM +0100, Kay Sievers (kay.sievers@...y.org) wrote: >> > And what's with tty drivers? If kernel freezes there even if suddenly >> > faulty userspace started to load them, where this can happen? Apparently >> > it is not sleeping userspace since console does not respond to input. >> >> 5-1 dev_t request looks like something in initramfs accesses >> /dev/console, but the driver for it is not properly >> initialized/registered that time, and the kernel module loader tries >> to load a module? The forked process might also try to access >> /dev/console again, and hence the loop? > > But why system freezes? Is this init linking/__init calling order > changes? Can you add something like: +++ b/kernel/kmod.c @@ -108,6 +108,7 @@ int request_module(const char *fmt, ...) return -ENOMEM; } + printk("XXX call modprobe %s %s[%u]\n", module_name, current->comm, task_pid_nr(current)); It may show which process is looking for /dev/console and causes modprobe to run, and maybe we get an idea what's going on. It may at least show if it's a /dev/console problem. Thanks, Kay -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
Powered by blists - more mailing lists