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 PHC | |
Open Source and information security mailing list archives
| ||
|
Date: Fri, 29 Aug 2014 12:49:45 +0300 From: Dan Carpenter <dan.carpenter@...cle.com> To: KY Srinivasan <kys@...rosoft.com> Cc: Sitsofe Wheeler <sitsofe@...il.com>, Dexuan Cui <decui@...rosoft.com>, Greg Kroah-Hartman <gregkh@...uxfoundation.org>, Haiyang Zhang <haiyangz@...rosoft.com>, "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>, "devel@...uxdriverproject.org" <devel@...uxdriverproject.org> Subject: Re: [PANIC, hyperv] BUG: unable to handle kernel paging request at ffff880077800004 (hv_ringbuffer_write) It's sort of weird that this is an alignment issue. The config that was posted earlier was an x86_64 config and on that system then the pointers from kmalloc() should already be aligned correctly at sizeof(u64). Earlier I said I suspected the code is racy, so possibly changing from kmalloc() to get_zeroed_page() just changes the timing enough so we don't see the race condition. regards, dan carpenter -- 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