ahci_host_activate NULL pointer (was Re: Linux 3.11-rc1)

[Alex Williamson]

On Sun, 2013-07-14 at 16:57 -0700, Linus Torvalds wrote:
> It's been two weeks, and the merge window has closed. If I missed
> anything, holler, but I don't have anything pending that I am aware
> of.
> 
> This merge window was smaller in terms of number of commits than the
> 3.10 merge window, but we actually have more new lines. Most of that
> seems to be in staging - a full third of all changes by line-count is
> staging, and merging in Lustre is the bulk of that. Let's see how that
> all turns out, I have to say that we don't have a great track record
> on merging filesystems through staging.
> 
> Ignoring the lustre merge, I think this really was a somewhat calmer
> merge window. We had a few trees with problems, and we have an
> on-going debate about stable patches that was triggered largely thanks
> to this merge window, so now we'll have something to discuss for the
> kernel summit. But on the whole, I suspect we might be starting to see
> the traditional summer slump (Australia notwithstanding).
> 
> Despite being a bit smaller than the last merge window, it's not like
> this was a _tiny_ one, and so as usual I'm only summarizing with the
> normal -rc1 mergelog: and as usual the people credited here are *not*
> the people who actually wrote the code (although in some cases that is
> true), they are the people who I merged the code from.
> 
> Hey, let's all start testing,

Anyone else seeing this:

[    2.212548] ahci 0000:00:1f.2: AHCI 0001.0200 32 slots 6 ports 3 Gbps 0x29 impl SATA mode
[    2.220732] ahci 0000:00:1f.2: flags: 64bit ncq sntf led clo pmp pio slum part ccc sxs 
[    2.228997] BUG: unable to handle kernel NULL pointer dereference at 0000000000000508
[    2.236850] IP: [<ffffffff814084f7>] ahci_host_activate+0x87/0x140
[    2.243047] PGD 0 
[    2.245077] Oops: 0000 [#1] SMP 
[    2.248335] Modules linked in:
[    2.251405] CPU: 7 PID: 1 Comm: swapper/0 Not tainted 3.11.0-rc1+ #574
[    2.257929] Hardware name: LENOVO 4157CTO/LENOVO, BIOS 60KT41AUS 01/04/2011
[    2.264880] task: ffff880371508000 ti: ffff880371510000 task.ti: ffff880371510000
[    2.272353] RIP: 0010:[<ffffffff814084f7>]  [<ffffffff814084f7>] ahci_host_activate+0x87/0x140
[    2.280969] RSP: 0018:ffff880371511b38  EFLAGS: 00010293
[    2.286273] RAX: ffff88036e724000 RBX: ffff88036e71c028 RCX: ffffffff8140bce0
[    2.293397] RDX: 0000000000000000 RSI: 000000000000002f RDI: ffff88037122f098
[    2.300521] RBP: ffff880371511b68 R08: 0000000000000080 R09: 0000000000000001
[    2.307645] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000001
[    2.314772] R13: 000000000000002e R14: 0000000000000000 R15: ffff88037122f000
[    2.321896] FS:  0000000000000000(0000) GS:ffff88037fdc0000(0000) knlGS:0000000000000000
[    2.329973] CS:  0010 DS: 0000 ES: 0000 CR0: 000000008005003b
[    2.335711] CR2: 0000000000000508 CR3: 0000000001c0b000 CR4: 00000000000007e0
[    2.342835] Stack:
[    2.344848]  ffff88036e720000 ffff88037122f000 0000000000000005 ffff88037122f098
[    2.352301]  ffff88036e734000 ffff88036e71c028 ffff880371511c38 ffffffff81408eae
[    2.359756]  ffff880300000000 ffff88037122f098 ffff8803710be7a8 ffff880300000010
[    2.367210] Call Trace:
[    2.369655]  [<ffffffff81408eae>] ahci_init_one+0x8fe/0xaa0
[    2.375221]  [<ffffffff816141cf>] ? _raw_spin_unlock_irqrestore+0x3f/0x70
[    2.382006]  [<ffffffff8132529b>] local_pci_probe+0x4b/0x80
[    2.387571]  [<ffffffff81325501>] pci_device_probe+0x111/0x120
[    2.393405]  [<ffffffff813bf43b>] driver_probe_device+0x8b/0x390
[    2.399411]  [<ffffffff813bf7eb>] __driver_attach+0xab/0xb0
[    2.404984]  [<ffffffff813bf740>] ? driver_probe_device+0x390/0x390
[    2.411241]  [<ffffffff813bd2cd>] bus_for_each_dev+0x5d/0xa0
[    2.416893]  [<ffffffff813bed7e>] driver_attach+0x1e/0x20
[    2.422284]  [<ffffffff813be917>] bus_add_driver+0x117/0x290
[    2.427937]  [<ffffffff81d54755>] ? libata_transport_init+0x5e/0x5e
[    2.434201]  [<ffffffff813bfc8a>] driver_register+0x7a/0x170
[    2.439853]  [<ffffffff81d54755>] ? libata_transport_init+0x5e/0x5e
[    2.446110]  [<ffffffff81324ce4>] __pci_register_driver+0x64/0x70
[    2.452196]  [<ffffffff81d5476e>] ahci_pci_driver_init+0x19/0x1b
[    2.458196]  [<ffffffff810002fa>] do_one_initcall+0xfa/0x1b0
[    2.463853]  [<ffffffff8107b100>] ? parse_args+0x1f0/0x450
[    2.469332]  [<ffffffff81d13ff8>] kernel_init_freeable+0x154/0x1e3
[    2.475510]  [<ffffffff81d1383f>] ? do_early_param+0x8c/0x8c
[    2.481163]  [<ffffffff81602140>] ? rest_init+0xe0/0xe0
[    2.486390]  [<ffffffff8160214e>] kernel_init+0xe/0xf0
[    2.491530]  [<ffffffff8161cf5c>] ret_from_fork+0x7c/0xb0
[    2.496928]  [<ffffffff81602140>] ? rest_init+0xe0/0xe0
[    2.502144] Code: 88 00 00 00 49 63 c4 48 8b 7b 38 43 8d 34 2c 48 8b 84 c3 00 01 00 00 41 b8 80 00 00 00 48 c7 c1 e0 bc 40 81 48 8b 90 78 37 00 00 <4c> 8b 8a 08 05 00 00 48 89 04 24 48 c7 c2 90 be 40 81 e8 f2 b7 
[    2.522097] RIP  [<ffffffff814084f7>] ahci_host_activate+0x87/0x140
[    2.528372]  RSP <ffff880371511b38>
[    2.531858] CR2: 0000000000000508
[    2.535184] ---[ end trace 66267c9b7b73f56b ]---
[    2.539808] Kernel panic - not syncing: Attempted to kill init! exitcode=0x00000009


--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/