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Subject2.6.25-mm1: not looking good

I repulled all the trees an hour or two ago, installed everything on an
8-way x86_64 box and:


stack-protector:

Testing -fstack-protector-all feature
No -fstack-protector-stack-frame!
-fstack-protector-all test failed
------------[ cut here ]------------
WARNING: at kernel/panic.c:369 __stack_chk_test+0x4b/0x51()
Modules linked in:
Pid: 1, comm: swapper Not tainted 2.6.25-mm1 #4
Call Trace:
[<ffffffff80256692>] ? print_modules+0x88/0x8f
[<ffffffff80237b70>] warn_on_slowpath+0x58/0x7f
[<ffffffff802388fe>] ? printk+0x67/0x69
[<ffffffff8034ec74>] ? debug_write_lock_after+0x18/0x1f
[<ffffffff8034ed43>] ? _raw_write_unlock+0x29/0x7b
[<ffffffff804f0254>] ? _write_unlock+0x9/0xb
[<ffffffff8023d25e>] ? insert_resource+0xe3/0xea
[<ffffffff80237be2>] __stack_chk_test+0x4b/0x51
[<ffffffff8092f912>] kernel_init+0x16c/0x29e
[<ffffffff8020ce58>] child_rip+0xa/0x12
[<ffffffff8092f7a6>] ? kernel_init+0x0/0x29e
[<ffffffff8020ce4e>] ? child_rip+0x0/0x12
---[ end trace da2bc9ee81defeda ]---

usb/sysfs:

ACPI: PCI Interrupt 0000:00:1d.0[A] -> GSI 17 (level, low) -> IRQ 17
uhci_hcd 0000:00:1d.0: UHCI Host Controller
uhci_hcd 0000:00:1d.0: new USB bus registered, assigned bus number 1
uhci_hcd 0000:00:1d.0: irq 17, io base 0x00002080
usb usb1: configuration #1 chosen from 1 choice
hub 1-0:1.0: USB hub found
hub 1-0:1.0: 2 ports detected
sysfs: duplicate filename '189:0' can not be created
------------[ cut here ]------------
WARNING: at fs/sysfs/dir.c:425 sysfs_add_one+0x42/0x7c()
Modules linked in: uhci_hcd(+)
Pid: 600, comm: insmod Tainted: G W 2.6.25-mm1 #4
Call Trace:
[<ffffffff80256692>] ? print_modules+0x88/0x8f
[<ffffffff80237b70>] warn_on_slowpath+0x58/0x7f
[<ffffffff802388fe>] ? printk+0x67/0x69
[<ffffffff804f0249>] ? _spin_unlock+0x9/0xb
[<ffffffff802a932f>] ? ifind+0x72/0x82
[<ffffffff802e0c49>] ? sysfs_ilookup_test+0x0/0x14
[<ffffffff802a93b4>] ? ilookup5_nowait+0x35/0x3e
[<ffffffff802e0ee2>] sysfs_add_one+0x42/0x7c
[<ffffffff802e1a0f>] sysfs_create_link+0xc9/0xfd
[<ffffffff803c1a39>] device_add+0x15d/0x581
[<ffffffff803c1e74>] device_register+0x17/0x1b
[<ffffffff803c1f55>] device_create+0xdd/0x110
[<ffffffff802e1a1a>] ? sysfs_create_link+0xd4/0xfd
[<ffffffff8034eb5f>] ? debug_spin_lock_after+0x18/0x1f
[<ffffffff8034efec>] ? _raw_spin_lock+0x116/0x122
[<ffffffff8042fca8>] usb_classdev_notify+0x53/0x85
[<ffffffff804f281b>] notifier_call_chain+0x31/0x63
[<ffffffff8024d7e1>] __blocking_notifier_call_chain+0x44/0x5e
[<ffffffff8024d80a>] blocking_notifier_call_chain+0xf/0x11
[<ffffffff804324ce>] usb_notify_add_device+0x18/0x1a
[<ffffffff8043280e>] generic_probe+0x94/0x9e
[<ffffffff803c3ae7>] ? __device_attach+0x0/0xd
[<ffffffff8042c48f>] usb_probe_device+0x3d/0x3f
[<ffffffff803c39e3>] driver_probe_device+0xbe/0x14b
[<ffffffff803c3ae7>] ? __device_attach+0x0/0xd
[<ffffffff803c3af0>] __device_attach+0x9/0xd
[<ffffffff803c2bb5>] bus_for_each_drv+0x4a/0x7d
[<ffffffff803c390e>] device_attach+0x61/0x78
[<ffffffff803c2e2a>] bus_attach_device+0x28/0x5c
[<ffffffff803c1ccf>] device_add+0x3f3/0x581
[<ffffffff804267f3>] usb_new_device+0x4d/0x8c
[<ffffffff80428ef2>] usb_add_hcd+0x464/0x5c2
[<ffffffff80432d84>] usb_hcd_pci_probe+0x1e4/0x298
[<ffffffff80356d7f>] pci_device_probe+0xde/0x137
[<ffffffff803c39e3>] driver_probe_device+0xbe/0x14b
[<ffffffff803c3abc>] __driver_attach+0x4c/0x77
[<ffffffff803c3a70>] ? __driver_attach+0x0/0x77
[<ffffffff803c291c>] bus_for_each_dev+0x4d/0x7e
[<ffffffff80291b83>] ? __kmalloc+0x8f/0xbe
[<ffffffff803c360b>] driver_attach+0x1c/0x1e
[<ffffffff803c3007>] bus_add_driver+0xaf/0x1e1
[<ffffffff803c3d6c>] driver_register+0x55/0xbd
[<ffffffff80356b19>] __pci_register_driver+0x71/0xa9
[<ffffffffa000f07e>] :uhci_hcd:uhci_hcd_init+0x7e/0xae
[<ffffffff80258435>] sys_init_module+0x18ae/0x19f5
[<ffffffff8026855a>] ? __raw_local_irq_save+0xc/0x12
[<ffffffff80356b51>] ? pci_unregister_driver+0x0/0x78
[<ffffffff8020c03b>] system_call_after_swapgs+0x7b/0x80
---[ end trace da2bc9ee81defeda ]---
more usb/sysfs:

hub 2-0:1.0: USB hub found
hub 2-0:1.0: 2 ports detected
sysfs: duplicate filename '189:128' can not be created
------------[ cut here ]------------
WARNING: at fs/sysfs/dir.c:425 sysfs_add_one+0x42/0x7c()
Modules linked in: uhci_hcd(+)
Pid: 600, comm: insmod Tainted: G W 2.6.25-mm1 #4
Call Trace:
[<ffffffff80256692>] ? print_modules+0x88/0x8f
[<ffffffff80237b70>] warn_on_slowpath+0x58/0x7f
[<ffffffff802388fe>] ? printk+0x67/0x69
[<ffffffff804f0249>] ? _spin_unlock+0x9/0xb
[<ffffffff802a932f>] ? ifind+0x72/0x82
[<ffffffff802e0c49>] ? sysfs_ilookup_test+0x0/0x14
[<ffffffff802a93b4>] ? ilookup5_nowait+0x35/0x3e
[<ffffffff802e0ee2>] sysfs_add_one+0x42/0x7c
[<ffffffff802e1a0f>] sysfs_create_link+0xc9/0xfd
[<ffffffff803c1a39>] device_add+0x15d/0x581
[<ffffffff803c1e74>] device_register+0x17/0x1b
[<ffffffff803c1f55>] device_create+0xdd/0x110
[<ffffffff802e1a1a>] ? sysfs_create_link+0xd4/0xfd
[<ffffffff8034eb5f>] ? debug_spin_lock_after+0x18/0x1f
[<ffffffff8034efec>] ? _raw_spin_lock+0x116/0x122

After 10 or fifteen minutes uptime, slab declared game over:

kernel BUG at mm/slab.c:590!
invalid opcode: 0000 [1] SMP
last sysfs file: /sys/devices/pci0000:00/0000:00:02.0/0000:01:00.0/0000:02:02.0/0000:05:00.1/irq
CPU 5
Modules linked in: nfsd auth_rpcgss exportfs lockd nfs_acl autofs4 hidp rfcomm l2cap bluetooth sunrpc ipv6 dm_mirror dm_log dm_multipath dm_mod sbs sbshc battery ac parport_pc lp parport sg floppy snd_hda_intel snd_seq_dummy ide_cd_mod cdrom snd_seq_oss snd_seq_midi_event snd_seq serio_raw snd_seq_device snd_pcm_oss snd_mixer_oss snd_pcm snd_timer i2c_i801 snd button soundcore i2c_core snd_page_alloc shpchp pcspkr ehci_hcd ohci_hcd uhci_hcd
Pid: 0, comm: swapper Tainted: G W 2.6.25-mm1 #4
RIP: 0010:[<ffffffff8028fea8>] [<ffffffff8028fea8>] page_get_cache+0x19/0x24
RSP: 0018:ffff81025f22fe88 EFLAGS: 00010046
RAX: 0000000000000000 RBX: ffffe20000028440 RCX: 0000000000000007
RDX: 0000000000000000 RSI: ffffe20000028440 RDI: 0000000000000040
RBP: ffff81025f22fe90 R08: 0000000000000006 R09: ffff810001080fe8
R10: ffff8100010b7a40 R11: ffff8100010b7a28 R12: 0000000000000282
R13: 0000000000000001 R14: 0000000000000001 R15: 0000000000000000
FS: 0000000000000000(0000) GS:ffff81025f1616c0(0000) knlGS:0000000000000000
CS: 0010 DS: 0018 ES: 0018 CR0: 000000008005003b
CR2: 0000003e5f0948f0 CR3: 000000024a01e000 CR4: 00000000000006e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Process swapper (pid: 0, threadinfo ffff81025f22a000, task ffff81025f2294a0)
Stack: ffffffff80a11690 ffff81025f22fea0 ffffffff8028fec4 ffff81025f22fec0
ffffffff802909af 0000000000000000 ffff8100010b4820 ffff81025f22fed0
ffffffff80327789 ffff81025f22ff00 ffffffff80268932 0000000000000001
Call Trace:
<IRQ> [<ffffffff8028fec4>] virt_to_cache+0x11/0x13
[<ffffffff802909af>] kfree+0x20/0x38
[<ffffffff80327789>] sel_netnode_free+0xd/0xf
[<ffffffff80268932>] __rcu_process_callbacks+0x147/0x1b6
[<ffffffff802689c4>] rcu_process_callbacks+0x23/0x44
[<ffffffff8023cc04>] __do_softirq+0x58/0xae
[<ffffffff8020d1cc>] call_softirq+0x1c/0x28
[<ffffffff8020ed5c>] do_softirq+0x2f/0x6f
[<ffffffff8023c72e>] irq_exit+0x36/0x38
[<ffffffff8021dedc>] smp_apic_timer_interrupt+0x74/0x81
[<ffffffff8020cc76>] apic_timer_interrupt+0x66/0x70
<EOI> [<ffffffff8020a2e1>] ? mwait_idle+0x38/0x42
[<ffffffff8020a2a9>] ? mwait_idle+0x0/0x42
[<ffffffff8020b2ff>] ? cpu_idle+0xcb/0xe0
[<ffffffff804eaefe>] ? start_secondary+0xb2/0xb4

Code: 3a 48 69 c0 80 0e 00 00 48 03 04 d5 00 35 92 80 c9 c3 55 48 89 e5 53 e8 87 ff ff ff 48 89 c7 48 89 c3 e8 69 ff ff ff 85 c0 75 04 <0f> 0b eb fe 48 8b 43 30 5b c9 c3 55 48 89 e5 e8 87 ff ff ff 48
RIP [<ffffffff8028fea8>] page_get_cache+0x19/0x24
RSP <ffff81025f22fe88>
security/selinux/netnode.c looks to be doing simple old kzalloc/kfree, so
I'd be suspecting slab. But there are significant changes netnode.c in
git-selinux.

config: http://userweb.kernel.org/~akpm/config-akpm2.txt
dmesg: http://userweb.kernel.org/~akpm/dmesg-2.6.25-mm1.txt
full tree: http://userweb.kernel.org/~akpm/mmotm/

I have maybe two hours in which to weed out whatever very-recently-added
dud patches are causing this. Any suggestions are welcome.



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