linux-kernel - Re: [PATCH 01/12] lockdep: syscall exit check

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

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:	Fri, 28 Sep 2007 14:03:31 +0200
From:	Heiko Carstens <heiko.carstens@...ibm.com>
To:	Peter Zijlstra <a.p.zijlstra@...llo.nl>
Cc:	lkml <linux-kernel@...r.kernel.org>, linux-arch@...r.kernel.org,
	Zach Brown <zach.brown@...cle.com>,
	Ingo Molnar <mingo@...e.hu>, akpm@...ux-foundation.org
Subject: Re: [PATCH 01/12] lockdep: syscall exit check

> +void lockdep_sys_exit(void)
> +{
> +	struct task_struct *curr = current;
> +
> +	if (unlikely(curr->lockdep_depth)) {
> +		if (!debug_locks_off())
> +			return;
> +		printk("\n========================================\n");
> +		printk(  "[ BUG: lock held at syscall exit time! ]\n");
> +		printk(  "----------------------------------------\n");
> +		printk("%s/%d is leaving the kernel with locks still held!\n",
> +				curr->comm, curr->pid);
> +		lockdep_print_held_locks(curr);
> +	}
> +}

By the way, the s390 patch I just posted also checks if we hold any locks
when returning from interrupt context to user space. Maybe the above text
could be changed to "lock held when returning to user space" ?
-
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/