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Date: Mon, 10 Jun 2013 11:22:58 -0700
From: Ben Greear <greearb@...delatech.com>
To: Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
netdev <netdev@...r.kernel.org>
Subject: kmemleak reports in kernel 3.9.5+
We had a system go OOM while doing lots of wireless
stations. (System had 8GB of RAM, so I suspect a leak).
I enabled kmemleak in a 3.9.5 (plus some local patches) and
I see the entries below. Any idea if these are real or not?
unreferenced object 0xffff880212281c80 (size 128):
comm "systemd", pid 1, jiffies 4294682684 (age 1159.517s)
hex dump (first 32 bytes):
60 39 27 12 02 88 ff ff 00 02 20 00 00 00 ad de `9'....... .....
10 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
backtrace:
[<ffffffff815de7bf>] kmemleak_alloc+0x73/0x98
[<ffffffff8118b4d4>] slab_post_alloc_hook+0x28/0x2a
[<ffffffff8118d605>] __kmalloc+0xf9/0x122
[<ffffffff8154946d>] kzalloc.clone.0+0xe/0x10
[<ffffffff81549494>] fib_default_rule_add+0x25/0x7a
[<ffffffffa014f5a9>] ip6mr_net_init+0x7e/0x118 [ipv6]
[<ffffffff8152c992>] ops_init+0xd6/0xf7
[<ffffffff8152cb51>] register_pernet_operations+0xc2/0x16b
[<ffffffff8152cc87>] register_pernet_subsys+0x2e/0x47
[<ffffffffa016db69>] 0xffffffffa016db69
[<ffffffffa016d109>] 0xffffffffa016d109
[<ffffffff8100207f>] do_one_initcall+0x7f/0x13e
[<ffffffff810f3985>] do_init_module+0x44/0x18f
[<ffffffff810f5da7>] load_module+0x14d1/0x168e
[<ffffffff810f6114>] sys_init_module+0xfd/0x101
[<ffffffff815f6599>] system_call_fastpath+0x16/0x1b
unreferenced object 0xffff880218ed92b0 (size 40):
comm "gnome-session", pid 934, jiffies 4294693971 (age 1148.267s)
hex dump (first 32 bytes):
00 00 00 00 00 00 00 00 00 97 41 8b 01 88 ff ff ..........A.....
02 00 00 00 00 00 00 00 20 44 46 08 00 ea ff ff ........ DF.....
backtrace:
[<ffffffff815de7bf>] kmemleak_alloc+0x73/0x98
[<ffffffff8118b4d4>] slab_post_alloc_hook+0x28/0x2a
[<ffffffff8118d9a7>] kmem_cache_alloc+0xb2/0x123
[<ffffffff81316919>] __debug_object_init+0x43/0x35f
[<ffffffff81316c62>] debug_object_init+0x14/0x16
[<ffffffff810b4e0a>] rcuhead_fixup_activate+0x2b/0xba
[<ffffffff81315f12>] debug_object_fixup+0x15/0x1d
[<ffffffff81316557>] debug_object_activate+0x126/0x139
[<ffffffff81118e4a>] __call_rcu.clone.1+0x58/0x22a
[<ffffffff81119065>] call_rcu+0x17/0x19
[<ffffffff811971f6>] put_object+0x46/0x4a
[<ffffffff811974e3>] delete_object_full+0x2d/0x32
[<ffffffff815de663>] kmemleak_free+0x59/0x7a
[<ffffffff8118bc0a>] slab_free_hook+0x21/0x87
[<ffffffff8118e888>] kmem_cache_free+0xbe/0x15d
[<ffffffff81175d98>] unlink_anon_vmas+0x9f/0x154
unreferenced object 0xffff88021716f870 (size 40):
comm "ip", pid 3146, jiffies 4294741842 (age 1100.453s)
hex dump (first 32 bytes):
00 00 00 00 00 00 00 00 c0 dc 37 ee 01 88 ff ff ..........7.....
01 00 00 00 00 00 00 00 88 35 0c e4 01 88 ff ff .........5......
backtrace:
[<ffffffff815de7bf>] kmemleak_alloc+0x73/0x98
[<ffffffff8118b4d4>] slab_post_alloc_hook+0x28/0x2a
[<ffffffff8118d9a7>] kmem_cache_alloc+0xb2/0x123
[<ffffffff81316919>] __debug_object_init+0x43/0x35f
[<ffffffff81316c62>] debug_object_init+0x14/0x16
[<ffffffff810a70df>] init_timer_key+0x2e/0xb3
[<ffffffff81521dcb>] sock_init_data+0x69/0x1ed
[<ffffffff815551a5>] __netlink_create+0x4f/0xb5
[<ffffffff815552fd>] netlink_create+0xf2/0x148
[<ffffffff8151ec54>] __sock_create+0x135/0x1be
[<ffffffff8151ed33>] sock_create+0x30/0x32
[<ffffffff81520517>] sys_socket+0x2f/0x98
[<ffffffff815f6599>] system_call_fastpath+0x16/0x1b
[<ffffffffffffffff>] 0xffffffffffffffff
unreferenced object 0xffff8801ebeb4450 (size 40):
comm "bash", pid 3200, jiffies 4294742742 (age 1099.584s)
hex dump (first 32 bytes):
00 00 00 00 00 00 00 00 c0 e5 91 f1 01 88 ff ff ................
01 00 00 00 00 00 00 00 40 4d 3d e4 01 88 ff ff ........@.......
backtrace:
[<ffffffff815de7bf>] kmemleak_alloc+0x73/0x98
[<ffffffff8118b4d4>] slab_post_alloc_hook+0x28/0x2a
[<ffffffff8118d9a7>] kmem_cache_alloc+0xb2/0x123
[<ffffffff81316919>] __debug_object_init+0x43/0x35f
[<ffffffff81316c62>] debug_object_init+0x14/0x16
[<ffffffff810b4e0a>] rcuhead_fixup_activate+0x2b/0xba
[<ffffffff81315f12>] debug_object_fixup+0x15/0x1d
[<ffffffff81316557>] debug_object_activate+0x126/0x139
[<ffffffff81118e4a>] __call_rcu.clone.1+0x58/0x22a
[<ffffffff81119065>] call_rcu+0x17/0x19
[<ffffffff811971f6>] put_object+0x46/0x4a
[<ffffffff811974e3>] delete_object_full+0x2d/0x32
[<ffffffff815de663>] kmemleak_free+0x59/0x7a
[<ffffffff8118bc0a>] slab_free_hook+0x21/0x87
[<ffffffff8118e888>] kmem_cache_free+0xbe/0x15d
[<ffffffff81175d98>] unlink_anon_vmas+0x9f/0x154
unreferenced object 0xffff8801f191e5c0 (size 40):
comm "clock-applet", pid 3100, jiffies 4294742818 (age 1099.508s)
hex dump (first 32 bytes):
50 44 eb eb 01 88 ff ff 70 f8 bb 9a 01 88 ff ff PD......p.......
01 00 00 00 00 00 00 00 58 45 3d e4 01 88 ff ff ........XE=.....
backtrace:
[<ffffffff815de7bf>] kmemleak_alloc+0x73/0x98
[<ffffffff8118b4d4>] slab_post_alloc_hook+0x28/0x2a
[<ffffffff8118d9a7>] kmem_cache_alloc+0xb2/0x123
[<ffffffff81316919>] __debug_object_init+0x43/0x35f
[<ffffffff81316c62>] debug_object_init+0x14/0x16
[<ffffffff810b4e0a>] rcuhead_fixup_activate+0x2b/0xba
[<ffffffff81315f12>] debug_object_fixup+0x15/0x1d
[<ffffffff81316557>] debug_object_activate+0x126/0x139
[<ffffffff81118e4a>] __call_rcu.clone.1+0x58/0x22a
[<ffffffff81119065>] call_rcu+0x17/0x19
[<ffffffff811971f6>] put_object+0x46/0x4a
[<ffffffff811974e3>] delete_object_full+0x2d/0x32
[<ffffffff815de663>] kmemleak_free+0x59/0x7a
[<ffffffff8118bc0a>] slab_free_hook+0x21/0x87
[<ffffffff8118e888>] kmem_cache_free+0xbe/0x15d
[<ffffffff811a51c6>] final_putname+0x38/0x3c
unreferenced object 0xffff8801ed2468a0 (size 40):
comm "wnck-applet", pid 3093, jiffies 4294742922 (age 1099.404s)
hex dump (first 32 bytes):
c0 3c b3 f1 01 88 ff ff 80 19 6a 82 ff ff ff ff .<........j.....
01 00 00 00 00 00 00 00 c8 74 31 e4 01 88 ff ff .........t1.....
backtrace:
[<ffffffff815de7bf>] kmemleak_alloc+0x73/0x98
[<ffffffff8118b4d4>] slab_post_alloc_hook+0x28/0x2a
[<ffffffff8118d9a7>] kmem_cache_alloc+0xb2/0x123
[<ffffffff81316919>] __debug_object_init+0x43/0x35f
[<ffffffff81316c62>] debug_object_init+0x14/0x16
[<ffffffff810b4e0a>] rcuhead_fixup_activate+0x2b/0xba
[<ffffffff81315f12>] debug_object_fixup+0x15/0x1d
[<ffffffff81316557>] debug_object_activate+0x126/0x139
[<ffffffff81118e4a>] __call_rcu.clone.1+0x58/0x22a
[<ffffffff81119065>] call_rcu+0x17/0x19
[<ffffffff811971f6>] put_object+0x46/0x4a
[<ffffffff811974e3>] delete_object_full+0x2d/0x32
[<ffffffff815de663>] kmemleak_free+0x59/0x7a
[<ffffffff8118bc0a>] slab_free_hook+0x21/0x87
[<ffffffff8118daf5>] kfree+0xdd/0x158
[<ffffffff815262b9>] skb_free_head+0x67/0x69
unreferenced object 0xffff8801f193cb80 (size 40):
comm "dbus-daemon", pid 1377, jiffies 4294743052 (age 1099.304s)
hex dump (first 32 bytes):
60 0e 39 ee 01 88 ff ff 70 e1 75 c6 01 88 ff ff `.9.....p.u.....
01 00 00 00 00 00 00 00 a0 2d 01 e5 01 88 ff ff .........-......
backtrace:
[<ffffffff815de7bf>] kmemleak_alloc+0x73/0x98
[<ffffffff8118b4d4>] slab_post_alloc_hook+0x28/0x2a
[<ffffffff8118d9a7>] kmem_cache_alloc+0xb2/0x123
[<ffffffff81316919>] __debug_object_init+0x43/0x35f
[<ffffffff81316c62>] debug_object_init+0x14/0x16
[<ffffffff810b4e0a>] rcuhead_fixup_activate+0x2b/0xba
[<ffffffff81315f12>] debug_object_fixup+0x15/0x1d
[<ffffffff81316557>] debug_object_activate+0x126/0x139
[<ffffffff81118e4a>] __call_rcu.clone.1+0x58/0x22a
[<ffffffff81119065>] call_rcu+0x17/0x19
[<ffffffff811971f6>] put_object+0x46/0x4a
[<ffffffff811974e3>] delete_object_full+0x2d/0x32
[<ffffffff815de663>] kmemleak_free+0x59/0x7a
[<ffffffff8118bc0a>] slab_free_hook+0x21/0x87
[<ffffffff8118e888>] kmem_cache_free+0xbe/0x15d
[<ffffffff811a51c6>] final_putname+0x38/0x3c
unreferenced object 0xffff8801f1b33cc0 (size 40):
comm "wpa_cli", pid 3221, jiffies 4294743135 (age 1099.221s)
hex dump (first 32 bytes):
00 00 00 00 00 00 00 00 a0 68 24 ed 01 88 ff ff .........h$.....
01 00 00 00 00 00 00 00 b0 7c 31 e4 01 88 ff ff .........|1.....
backtrace:
[<ffffffff815de7bf>] kmemleak_alloc+0x73/0x98
[<ffffffff8118b4d4>] slab_post_alloc_hook+0x28/0x2a
[<ffffffff8118d9a7>] kmem_cache_alloc+0xb2/0x123
[<ffffffff81316919>] __debug_object_init+0x43/0x35f
[<ffffffff81316c62>] debug_object_init+0x14/0x16
[<ffffffff810b4e0a>] rcuhead_fixup_activate+0x2b/0xba
[<ffffffff81315f12>] debug_object_fixup+0x15/0x1d
[<ffffffff81316557>] debug_object_activate+0x126/0x139
[<ffffffff81118e4a>] __call_rcu.clone.1+0x58/0x22a
[<ffffffff81119065>] call_rcu+0x17/0x19
[<ffffffff8119be2b>] file_free+0x31/0x35
[<ffffffff8119be61>] put_filp+0x32/0x36
[<ffffffff811a6bf1>] path_openat+0x340/0x379
[<ffffffff811a6d39>] do_filp_open+0x3d/0x89
[<ffffffff81199346>] do_sys_open+0x72/0x104
[<ffffffff8119940f>] sys_open+0x21/0x23
unreferenced object 0xffff8801ee390e60 (size 40):
comm "evolution-alarm", pid 3011, jiffies 4294743335 (age 1099.023s)
hex dump (first 32 bytes):
00 00 00 00 00 00 00 00 80 cb 93 f1 01 88 ff ff ................
01 00 00 00 00 00 00 00 b8 25 01 e5 01 88 ff ff .........%......
backtrace:
[<ffffffff815de7bf>] kmemleak_alloc+0x73/0x98
[<ffffffff8118b4d4>] slab_post_alloc_hook+0x28/0x2a
[<ffffffff8118d9a7>] kmem_cache_alloc+0xb2/0x123
[<ffffffff81316919>] __debug_object_init+0x43/0x35f
[<ffffffff81316c62>] debug_object_init+0x14/0x16
[<ffffffff810b4e0a>] rcuhead_fixup_activate+0x2b/0xba
[<ffffffff81315f12>] debug_object_fixup+0x15/0x1d
[<ffffffff81316557>] debug_object_activate+0x126/0x139
[<ffffffff81118e4a>] __call_rcu.clone.1+0x58/0x22a
[<ffffffff81119065>] call_rcu+0x17/0x19
[<ffffffff811971f6>] put_object+0x46/0x4a
[<ffffffff811974e3>] delete_object_full+0x2d/0x32
[<ffffffff815de663>] kmemleak_free+0x59/0x7a
[<ffffffff8118bc0a>] slab_free_hook+0x21/0x87
[<ffffffff8118e888>] kmem_cache_free+0xbe/0x15d
[<ffffffff811a51c6>] final_putname+0x38/0x3c
unreferenced object 0xffff880216e7ca10 (size 40):
comm "metacity", pid 2810, jiffies 4294744465 (age 1097.923s)
hex dump (first 32 bytes):
30 fe 97 ee 01 88 ff ff 80 6b 5c 82 ff ff ff ff 0........k\.....
01 00 00 00 00 00 00 00 70 3d 15 e5 01 88 ff ff ........p=......
backtrace:
[<ffffffff815de7bf>] kmemleak_alloc+0x73/0x98
[<ffffffff8118b4d4>] slab_post_alloc_hook+0x28/0x2a
[<ffffffff8118d9a7>] kmem_cache_alloc+0xb2/0x123
[<ffffffff81316919>] __debug_object_init+0x43/0x35f
[<ffffffff81316c62>] debug_object_init+0x14/0x16
[<ffffffff810b4e0a>] rcuhead_fixup_activate+0x2b/0xba
[<ffffffff81315f12>] debug_object_fixup+0x15/0x1d
[<ffffffff81316557>] debug_object_activate+0x126/0x139
[<ffffffff81118e4a>] __call_rcu.clone.1+0x58/0x22a
[<ffffffff81119065>] call_rcu+0x17/0x19
[<ffffffff811971f6>] put_object+0x46/0x4a
[<ffffffff811974e3>] delete_object_full+0x2d/0x32
[<ffffffff815de663>] kmemleak_free+0x59/0x7a
[<ffffffff8118bc0a>] slab_free_hook+0x21/0x87
[<ffffffff8118e888>] kmem_cache_free+0xbe/0x15d
[<ffffffff81527493>] __kfree_skb+0x7d/0x82
unreferenced object 0xffff8801ee97fe30 (size 40):
comm "pool", pid 3081, jiffies 4294744513 (age 1097.875s)
hex dump (first 32 bytes):
00 00 00 00 00 00 00 00 10 ca e7 16 02 88 ff ff ................
01 00 00 00 00 00 00 00 88 35 15 e5 01 88 ff ff .........5......
backtrace:
[<ffffffff815de7bf>] kmemleak_alloc+0x73/0x98
[<ffffffff8118b4d4>] slab_post_alloc_hook+0x28/0x2a
[<ffffffff8118d9a7>] kmem_cache_alloc+0xb2/0x123
[<ffffffff81316919>] __debug_object_init+0x43/0x35f
[<ffffffff81316c62>] debug_object_init+0x14/0x16
[<ffffffff810b4e0a>] rcuhead_fixup_activate+0x2b/0xba
[<ffffffff81315f12>] debug_object_fixup+0x15/0x1d
[<ffffffff81316557>] debug_object_activate+0x126/0x139
[<ffffffff81118e4a>] __call_rcu.clone.1+0x58/0x22a
[<ffffffff81119065>] call_rcu+0x17/0x19
[<ffffffff811971f6>] put_object+0x46/0x4a
[<ffffffff811974e3>] delete_object_full+0x2d/0x32
[<ffffffff815de663>] kmemleak_free+0x59/0x7a
[<ffffffff8118bc0a>] slab_free_hook+0x21/0x87
[<ffffffff8118e888>] kmem_cache_free+0xbe/0x15d
[<ffffffff811a51c6>] final_putname+0x38/0x3c
--
Ben Greear <greearb@...delatech.com>
Candela Technologies Inc http://www.candelatech.com
--
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