| 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: Tue, 22 Nov 2011 19:55:40 +0100 From: Markus Trippelsdorf <markus@...ppelsdorf.de> To: Christoph Lameter <cl@...ux.com> Cc: Eric Dumazet <eric.dumazet@...il.com>, Christian Kujau <lists@...dbynature.de>, Benjamin Herrenschmidt <benh@...nel.crashing.org>, "Alex,Shi" <alex.shi@...el.com>, "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>, "linux-mm@...ck.org" <linux-mm@...ck.org>, Pekka Enberg <penberg@...nel.org>, Matt Mackall <mpm@...enic.com>, "netdev@...r.kernel.org" <netdev@...r.kernel.org>, Tejun Heo <tj@...nel.org> Subject: Re: slub: Lockout validation scans during freeing of object On 2011.11.22 at 11:40 -0600, Christoph Lameter wrote: > On Tue, 22 Nov 2011, Eric Dumazet wrote: > > > This seems better, but I still have some warnings : > > Trying to reproduce with a kernel configured to do preempt. This is > actually quite interesting since its always off by 1. BTW there are some obvious overflows in the "slabinfo -l" output on my machine: Name Objects Objsize Space Slabs/Part/Cpu O/S O %Fr %Ef Flg :t-0000024 680 24 16.3K 0/0/4 170 0 0 99 * :t-0000032 768 32 24.5K 0/0/6 128 0 0 100 * :t-0000040 1632 40 65.5K 13/0/3 102 0 0 99 * :t-0000048 4533 48 241.6K 18446744073709551583/9/92 85 0 15 90 * :t-0000064 3392 64 217.0K 30/0/23 64 0 0 100 * :t-0000072 4368 72 319.4K 73/0/5 56 0 0 98 * :t-0000112 720 112 81.9K 0/0/20 36 0 0 98 * :t-0000128 1684 128 233.4K 18446744073709551607/7/66 32 0 12 92 * :t-0000136 120 136 16.3K 0/0/4 30 0 0 99 * :t-0000144 8036 144 1.1M 283/0/4 28 0 0 98 * :t-0000192 4452 192 872.4K 165/0/48 21 0 0 97 * :t-0000216 90 216 20.4K 1/0/4 18 0 0 94 * :t-0000256 539 256 147.4K 18446744073709551609/3/43 16 0 8 93 * :t-0000320 2425 320 794.6K 93/0/4 25 1 0 97 *A :t-0000400 60 400 24.5K 0/0/3 20 1 0 97 * :t-0000512 640 512 327.6K 23/0/17 16 1 0 100 * :t-0000704 483 704 344.0K 0/0/21 23 2 0 98 *A :t-0001024 373 1024 475.1K 15/10/14 16 2 34 80 * :t-0002048 288 2048 589.8K 10/0/8 16 3 0 100 * :t-0004096 119 4096 524.2K 4/3/12 8 3 18 92 * Acpi-State 204 80 16.3K 0/0/4 51 0 0 99 anon_vma 3528 64 258.0K 9/0/54 56 0 0 87 bdev_cache 84 728 65.5K 0/0/4 21 2 0 93 Aa blkdev_queue 38 1664 65.5K 0/0/2 19 3 0 96 blkdev_requests 161 344 57.3K 0/0/7 23 1 0 96 buffer_head 1014 104 106.4K 5/0/21 39 0 0 99 a cfq_queue 102 232 24.5K 1/0/5 17 0 0 96 dentry 15897 192 3.1M 723/0/34 21 0 0 98 a idr_layer_cache 390 544 212.9K 8/0/5 30 2 0 99 inode_cache 6448 512 3.4M 199/0/9 31 2 0 96 a ip_fib_trie 219 56 12.2K 0/0/3 73 0 0 99 kmalloc-16 3072 16 49.1K 7/0/5 256 0 0 100 kmalloc-8 4608 8 36.8K 4/0/5 512 0 0 100 kmalloc-8192 20 8192 163.8K 1/0/4 4 3 0 100 kmalloc-96 840 96 81.9K 7/0/13 42 0 0 98 kmem_cache 21 192 4.0K 0/0/1 21 0 0 98 *A kmem_cache_node 192 64 12.2K 0/0/3 64 0 0 100 *A mm_struct 171 832 147.4K 0/0/9 19 2 0 96 A mqueue_inode_cache 19 800 16.3K 0/0/1 19 2 0 92 A nf_conntrack_ffffffff8199e380 60 264 16.3K 0/0/2 30 1 0 96 proc_inode_cache 420 576 245.7K 2/0/13 28 2 0 98 a radix_tree_node 3472 560 2.0M 120/0/4 28 2 0 95 a RAW 42 712 32.7K 0/0/2 21 2 0 91 A shmem_inode_cache 1036 576 606.2K 21/0/16 28 2 0 98 sighand_cache 210 2088 458.7K 3/0/11 15 3 0 95 A signal_cache 268 920 360.4K 18446744073709551614/7/24 17 2 31 68 A sigqueue 125 160 20.4K 0/0/5 25 0 0 97 skbuff_fclone_cache 72 420 32.7K 0/0/4 18 1 0 92 A sock_inode_cache 196 560 114.6K 0/0/7 28 2 0 95 Aa task_struct 215 1504 557.0K 9/9/8 21 3 52 58 TCP 21 1504 32.7K 0/0/1 21 3 0 96 A UDP 63 736 49.1K 0/0/3 21 2 0 94 A vm_area_struct 3278 168 602.1K 89/33/58 24 0 22 91 xfs_btree_cur 76 208 16.3K 0/0/4 19 0 0 96 xfs_buf_item 108 224 24.5K 0/0/6 18 0 0 98 xfs_da_state 64 488 32.7K 0/0/4 16 1 0 95 xfs_inode 7055 896 6.7M 411/0/4 17 2 0 92 Aa xfs_log_ticket 80 200 16.3K 0/0/4 20 0 0 97 xfs_trans 116 280 32.7K 0/0/4 29 1 0 99 -- Markus -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
Powered by blists - more mailing lists