Bugs in nouveau_channel_alloc()

Bugs in nouveau_channel_alloc()

[Shinpei KATO]

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Hi all,

I have just started using Nouveau, with Fedora 12.
I downloaded the source from the Nouveau kernel repository, and built it by
following the instructions in the Nouveau Wiki page.
The new Linux kernel with Nouveau seems to work without any problems, but I
found some error messages in the kernel log.
The attached file contains the kernel messages related to the Nouveau DRM,
which I copied and pasted from the original kernel log.

To my understanding, two errors occured when the nouveau_channel_alloc()
function is called.
In particular, the first one occured when modprobe is done, and the second
one did when Xorg is launched.
I am not sure if these errors are actually "BUGs" or not.
Wish someone gives me some advice for them.

I am using the GeForce 9500 GT card installed on the DELL T5500 machine
(X86-64 eight-core).
Please tell me if I need to give more information to get answers.

Best regards,
- Shinpei

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Feb 12 18:19:25 shinpei-t5500 kernel: [drm] nouveau 0000:03:00.0: nouveau_channel_free: freeing fifo 2
.
.
.
Feb 12 18:20:25 shinpei-t5500 kernel: [drm] Initialized drm 1.1.0 20060810
Feb 12 18:20:25 shinpei-t5500 kernel: nouveau 0000:03:00.0: PCI INT A -> GSI 24 (level, low) -> IRQ 24
Feb 12 18:20:25 shinpei-t5500 kernel: [drm] nouveau 0000:03:00.0: Detected an NV50 generation card (0x096000c1)
Feb 12 18:20:25 shinpei-t5500 kernel: [drm] nouveau 0000:03:00.0: Attempting to load BIOS image from PRAMIN
Feb 12 18:20:25 shinpei-t5500 kernel: [drm] nouveau 0000:03:00.0: ... appears to be valid
Feb 12 18:20:25 shinpei-t5500 kernel: [drm] nouveau 0000:03:00.0: BIT BIOS found
Feb 12 18:20:25 shinpei-t5500 kernel: [drm] nouveau 0000:03:00.0: Bios version 62.94.29.00
Feb 12 18:20:25 shinpei-t5500 kernel: [drm] nouveau 0000:03:00.0: TMDS table revision 2.0 not currently supported
Feb 12 18:20:25 shinpei-t5500 kernel: [drm] nouveau 0000:03:00.0: Found Display Configuration Block version 4.0
Feb 12 18:20:25 shinpei-t5500 kernel: [drm] nouveau 0000:03:00.0: DCB connector table: VHER 0x40 5 16 4
Feb 12 18:20:25 shinpei-t5500 kernel: [drm] nouveau 0000:03:00.0:   0: 0x00001030: type 0x30 idx 0 tag 0x07
Feb 12 18:20:25 shinpei-t5500 kernel: [drm] nouveau 0000:03:00.0:   1: 0x00002130: type 0x30 idx 1 tag 0x08
Feb 12 18:20:25 shinpei-t5500 kernel: [drm] nouveau 0000:03:00.0:   2: 0x00000210: type 0x10 idx 2 tag 0xff
Feb 12 18:20:25 shinpei-t5500 kernel: [drm] nouveau 0000:03:00.0:   3: 0x00000211: type 0x11 idx 2 tag 0xff
Feb 12 18:20:25 shinpei-t5500 kernel: [drm] nouveau 0000:03:00.0:   4: 0x00000213: type 0x13 idx 2 tag 0xff
Feb 12 18:20:25 shinpei-t5500 kernel: [drm] nouveau 0000:03:00.0: Raw DCB entry 0: 02000300 00000028
Feb 12 18:20:25 shinpei-t5500 kernel: [drm] nouveau 0000:03:00.0: Raw DCB entry 1: 01000302 00020030
Feb 12 18:20:25 shinpei-t5500 kernel: [drm] nouveau 0000:03:00.0: Raw DCB entry 2: 04011310 00000028
Feb 12 18:20:25 shinpei-t5500 kernel: [drm] nouveau 0000:03:00.0: Raw DCB entry 3: 010223f1 00c0c080
Feb 12 18:20:25 shinpei-t5500 kernel: [drm] nouveau 0000:03:00.0: Parsing VBIOS init table 0 at offset 0xD0BE
Feb 12 18:20:25 shinpei-t5500 kernel: [drm] nouveau 0000:03:00.0: Parsing VBIOS init table 1 at offset 0xD4D3
Feb 12 18:20:25 shinpei-t5500 kernel: [drm] nouveau 0000:03:00.0: Parsing VBIOS init table 2 at offset 0xE4C4
Feb 12 18:20:25 shinpei-t5500 kernel: [drm] nouveau 0000:03:00.0: Parsing VBIOS init table 3 at offset 0xE60D
Feb 12 18:20:25 shinpei-t5500 kernel: [drm] nouveau 0000:03:00.0: Parsing VBIOS init table 4 at offset 0xE849
Feb 12 18:20:25 shinpei-t5500 kernel: [drm] nouveau 0000:03:00.0: Parsing VBIOS init table at offset 0xE8AE
Feb 12 18:20:25 shinpei-t5500 kernel: [drm] nouveau 0000:03:00.0: 0xE8AE: Condition still not met after 20ms, skipping following opcodes
Feb 12 18:20:25 shinpei-t5500 kernel: [drm] nouveau 0000:03:00.0: 0xC090: parsing output script 0
Feb 12 18:20:25 shinpei-t5500 kernel: [drm] nouveau 0000:03:00.0: 0xAB1C: parsing output script 0
Feb 12 18:20:25 shinpei-t5500 kernel: [TTM] Zone  kernel: Available graphics memory: 2026660 kiB.
Feb 12 18:20:25 shinpei-t5500 kernel: [drm] nouveau 0000:03:00.0: 1024 MiB VRAM
Feb 12 18:20:25 shinpei-t5500 kernel: [drm] nouveau 0000:03:00.0: 512 MiB GART (aperture)
Feb 12 18:20:25 shinpei-t5500 kernel: nouveau 0000:03:00.0: firmware: requesting nouveau/nv96.ctxprog
Feb 12 18:20:25 shinpei-t5500 kernel: nouveau 0000:03:00.0: firmware: requesting nouveau/nv96.ctxvals
Feb 12 18:20:25 shinpei-t5500 kernel: [drm] nouveau 0000:03:00.0: Allocating FIFO number 1
Feb 12 18:20:25 shinpei-t5500 kernel: BUG: sleeping function called from invalid context at mm/slub.c:1719
Feb 12 18:20:25 shinpei-t5500 kernel: in_atomic(): 0, irqs_disabled(): 1, pid: 152, name: modprobe
Feb 12 18:20:25 shinpei-t5500 kernel: Pid: 152, comm: modprobe Not tainted 2.6.32 #1
Feb 12 18:20:25 shinpei-t5500 kernel: Call Trace:
Feb 12 18:20:25 shinpei-t5500 kernel: [<ffffffff81045bfb>] __might_sleep+0xed/0xef
Feb 12 18:20:25 shinpei-t5500 kernel: [<ffffffff811092a4>] __kmalloc+0xb3/0x15e
Feb 12 18:20:25 shinpei-t5500 kernel: [<ffffffffa00766e1>] ? kzalloc.clone.0+0x13/0x15 [nouveau]
Feb 12 18:20:25 shinpei-t5500 kernel: [<ffffffffa00766e1>] kzalloc.clone.0+0x13/0x15 [nouveau]
Feb 12 18:20:25 shinpei-t5500 kernel: [<ffffffffa0076784>] nouveau_gpuobj_new+0xa1/0x2f6 [nouveau]
Feb 12 18:20:25 shinpei-t5500 kernel: [<ffffffffa00775a5>] nouveau_gpuobj_new_ref+0x3d/0x7e [nouveau]
Feb 12 18:20:25 shinpei-t5500 kernel: [<ffffffffa0095f6a>] nv50_graph_create_context+0x93/0x1f2 [nouveau]
Feb 12 18:20:25 shinpei-t5500 kernel: [<ffffffffa008d4f7>] ? nv_wr32+0x1d/0x1f [nouveau]
Feb 12 18:20:25 shinpei-t5500 kernel: [<ffffffffa0074719>] nouveau_channel_alloc+0x481/0x54d [nouveau]
Feb 12 18:20:25 shinpei-t5500 kernel: [<ffffffffa00738d0>] nouveau_card_init+0xbb2/0xdb8 [nouveau]
Feb 12 18:20:25 shinpei-t5500 kernel: [<ffffffffa0073ede>] nouveau_load+0x3f8/0x406 [nouveau]
Feb 12 18:20:25 shinpei-t5500 kernel: [<ffffffffa001dbbc>] drm_get_dev+0x378/0x479 [drm]
Feb 12 18:20:25 shinpei-t5500 kernel: [<ffffffffa00a7ab4>] nouveau_pci_probe+0x15/0x17 [nouveau]
Feb 12 18:20:25 shinpei-t5500 kernel: [<ffffffff81237035>] local_pci_probe+0x17/0x1b
Feb 12 18:20:25 shinpei-t5500 kernel: [<ffffffff81237dfb>] pci_device_probe+0xcd/0xfd
Feb 12 18:20:25 shinpei-t5500 kernel: [<ffffffff812d3b73>] ? driver_sysfs_add+0x4c/0x71
Feb 12 18:20:25 shinpei-t5500 kernel: [<ffffffff812d3d33>] driver_probe_device+0xdb/0x1fb
Feb 12 18:20:25 shinpei-t5500 kernel: [<ffffffff812d3eb0>] __driver_attach+0x5d/0x81
Feb 12 18:20:25 shinpei-t5500 kernel: [<ffffffff812d3e53>] ? __driver_attach+0x0/0x81
Feb 12 18:20:25 shinpei-t5500 kernel: [<ffffffff812d3202>] bus_for_each_dev+0x53/0x88
Feb 12 18:20:25 shinpei-t5500 kernel: [<ffffffff812d3ad2>] driver_attach+0x1e/0x20
Feb 12 18:20:25 shinpei-t5500 kernel: [<ffffffff812d372d>] bus_add_driver+0xd5/0x23c
Feb 12 18:20:25 shinpei-t5500 kernel: [<ffffffff812d419c>] driver_register+0x9d/0x10e
Feb 12 18:20:25 shinpei-t5500 kernel: [<ffffffff81238027>] __pci_register_driver+0x58/0xc8
Feb 12 18:20:25 shinpei-t5500 kernel: [<ffffffffa00c6000>] ? nouveau_init+0x0/0x4d [nouveau]
Feb 12 18:20:25 shinpei-t5500 kernel: [<ffffffffa0018c46>] drm_init+0x75/0xdb [drm]
Feb 12 18:20:25 shinpei-t5500 kernel: [<ffffffffa00c6000>] ? nouveau_init+0x0/0x4d [nouveau]
Feb 12 18:20:25 shinpei-t5500 kernel: [<ffffffffa00c604b>] nouveau_init+0x4b/0x4d [nouveau]
Feb 12 18:20:25 shinpei-t5500 kernel: [<ffffffff8100a069>] do_one_initcall+0x5e/0x159
Feb 12 18:20:25 shinpei-t5500 kernel: [<ffffffff8108d360>] sys_init_module+0xd6/0x236
Feb 12 18:20:25 shinpei-t5500 kernel: [<ffffffff81011cb2>] system_call_fastpath+0x16/0x1b
Feb 12 18:20:25 shinpei-t5500 kernel: [drm] nouveau 0000:03:00.0: nouveau_channel_alloc: initialised FIFO 1
Feb 12 18:20:25 shinpei-t5500 kernel: [drm] nouveau 0000:03:00.0: Detected a DAC output
Feb 12 18:20:25 shinpei-t5500 kernel: [drm] nouveau 0000:03:00.0: Detected a TMDS output
Feb 12 18:20:25 shinpei-t5500 kernel: [drm] nouveau 0000:03:00.0: Detected a DAC output
Feb 12 18:20:25 shinpei-t5500 kernel: [drm] nouveau 0000:03:00.0: DCB encoder 1 unknown
Feb 12 18:20:25 shinpei-t5500 kernel: [drm] nouveau 0000:03:00.0: Detected a DVI-I connector
Feb 12 18:20:25 shinpei-t5500 kernel: [drm] nouveau 0000:03:00.0: Detected a VGA connector
Feb 12 18:20:25 shinpei-t5500 kernel: [drm] nouveau 0000:03:00.0: allocated 1280x1024 fb: 0x40250000, bo ffff88012966ba00
Feb 12 18:20:25 shinpei-t5500 kernel: [drm] TMDS-8: set mode 1280x1024 1b
Feb 12 18:20:25 shinpei-t5500 kernel: [drm] nouveau 0000:03:00.0: 0xC0AE: parsing output script 1
Feb 12 18:20:25 shinpei-t5500 kernel: [drm] nouveau 0000:03:00.0: 0xC0AF: parsing output script 2
Feb 12 18:20:25 shinpei-t5500 kernel: [drm] nouveau 0000:03:00.0: 0xBD9A: parsing clock script 0
Feb 12 18:20:25 shinpei-t5500 kernel: [drm] nouveau 0000:03:00.0: 0xB6D6: parsing clock script 1
Feb 12 18:20:25 shinpei-t5500 kernel: Console: switching to colour frame buffer device 160x64
Feb 12 18:20:25 shinpei-t5500 kernel: fb0: nouveaufb frame buffer device
Feb 12 18:20:25 shinpei-t5500 kernel: registered panic notifier
Feb 12 18:20:25 shinpei-t5500 kernel: [drm] Initialized nouveau 0.0.15 9dc649a4fa246bfc1 for 0000:03:00.0 on minor 0
.
.
.
Feb 12 18:20:28 shinpei-t5500 kernel: [drm] nouveau 0000:03:00.0: Allocating FIFO number 2
Feb 12 18:20:28 shinpei-t5500 kernel: BUG: sleeping function called from invalid context at mm/slub.c:1719
Feb 12 18:20:28 shinpei-t5500 kernel: in_atomic(): 0, irqs_disabled(): 1, pid: 1450, name: Xorg
Feb 12 18:20:28 shinpei-t5500 kernel: Pid: 1450, comm: Xorg Not tainted 2.6.32 #1
Feb 12 18:20:28 shinpei-t5500 kernel: Call Trace:
Feb 12 18:20:28 shinpei-t5500 kernel: [<ffffffff81045bfb>] __might_sleep+0xed/0xef
Feb 12 18:20:28 shinpei-t5500 kernel: [<ffffffff811092a4>] __kmalloc+0xb3/0x15e
Feb 12 18:20:28 shinpei-t5500 kernel: [<ffffffffa00766e1>] ? kzalloc.clone.0+0x13/0x15 [nouveau]
Feb 12 18:20:28 shinpei-t5500 kernel: [<ffffffffa00766e1>] kzalloc.clone.0+0x13/0x15 [nouveau]
Feb 12 18:20:28 shinpei-t5500 kernel: [<ffffffffa0076784>] nouveau_gpuobj_new+0xa1/0x2f6 [nouveau]
Feb 12 18:20:28 shinpei-t5500 kernel: [<ffffffffa00775a5>] nouveau_gpuobj_new_ref+0x3d/0x7e [nouveau]
Feb 12 18:20:28 shinpei-t5500 kernel: [<ffffffffa0095f6a>] nv50_graph_create_context+0x93/0x1f2 [nouveau]
Feb 12 18:20:28 shinpei-t5500 kernel: [<ffffffffa008d4f7>] ? nv_wr32+0x1d/0x1f [nouveau]
Feb 12 18:20:28 shinpei-t5500 kernel: [<ffffffffa0074719>] nouveau_channel_alloc+0x481/0x54d [nouveau]
Feb 12 18:20:28 shinpei-t5500 kernel: [<ffffffffa007485b>] nouveau_ioctl_fifo_alloc+0x76/0xf3 [nouveau]
Feb 12 18:20:28 shinpei-t5500 kernel: [<ffffffffa0019218>] drm_ioctl+0x26d/0x335 [drm]
Feb 12 18:20:28 shinpei-t5500 kernel: [<ffffffffa00747e5>] ? nouveau_ioctl_fifo_alloc+0x0/0xf3 [nouveau]
Feb 12 18:20:28 shinpei-t5500 kernel: [<ffffffff810dbb50>] ? page_evictable+0x17/0x81
Feb 12 18:20:28 shinpei-t5500 kernel: [<ffffffff810daa21>] ? lru_cache_add_lru+0x27/0x29
Feb 12 18:20:28 shinpei-t5500 kernel: [<ffffffff810f4e55>] ? page_add_new_anon_rmap+0x3f/0x4e
Feb 12 18:20:28 shinpei-t5500 kernel: [<ffffffff81123c00>] vfs_ioctl+0x22/0x87
Feb 12 18:20:28 shinpei-t5500 kernel: [<ffffffff8112415c>] do_vfs_ioctl+0x47b/0x4c1
Feb 12 18:20:28 shinpei-t5500 kernel: [<ffffffff811241f8>] sys_ioctl+0x56/0x79
Feb 12 18:20:28 shinpei-t5500 kernel: [<ffffffff81011cb2>] system_call_fastpath+0x16/0x1b
Feb 12 18:20:28 shinpei-t5500 kernel: [drm] nouveau 0000:03:00.0: nouveau_channel_alloc: initialised FIFO 2

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Re: Bugs in nouveau_channel_alloc()

[Marcin Slusarz]

On Sat, Feb 13, 2010 at 09:15:20AM +0900, Shinpei KATO wrote:
> Hi all,
> 
> I have just started using Nouveau, with Fedora 12.
> I downloaded the source from the Nouveau kernel repository, and built it by
> following the instructions in the Nouveau Wiki page.
> The new Linux kernel with Nouveau seems to work without any problems, but I
> found some error messages in the kernel log.
> The attached file contains the kernel messages related to the Nouveau DRM,
> which I copied and pasted from the original kernel log.
> 
> To my understanding, two errors occured when the nouveau_channel_alloc()
> function is called.
> In particular, the first one occured when modprobe is done, and the second
> one did when Xorg is launched.
> I am not sure if these errors are actually "BUGs" or not.
> Wish someone gives me some advice for them.

This bug is already fixed in latest git. Just upgrade the kernel.

Marcin

Re: Bugs in nouveau_channel_alloc()

[Shinpei KATO]

Dear Marcin,

Thanks for your response.
You are right.
The latest git has fixed this bug.
In fact, the out-of-tree Nouveau module was conflicting with the one
included in the kernel tree in my machine, since I tried the module
independently before.
It is my appologie for this careless question.

Best,
- Shinpei

> -----Original Message-----
> From: Marcin Slusarz [mailto:marcin.slusarz-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org]
> Sent: Saturday, February 13, 2010 7:16 PM
> To: Shinpei KATO
> Cc: nouveau-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org
> Subject: Re: [Nouveau] Bugs in nouveau_channel_alloc()
> 
> On Sat, Feb 13, 2010 at 09:15:20AM +0900, Shinpei KATO wrote:
> > Hi all,
> >
> > I have just started using Nouveau, with Fedora 12.
> > I downloaded the source from the Nouveau kernel repository, and built
> it by
> > following the instructions in the Nouveau Wiki page.
> > The new Linux kernel with Nouveau seems to work without any problems,
> but I
> > found some error messages in the kernel log.
> > The attached file contains the kernel messages related to the Nouveau
> DRM,
> > which I copied and pasted from the original kernel log.
> >
> > To my understanding, two errors occured when the nouveau_channel_alloc()
> > function is called.
> > In particular, the first one occured when modprobe is done, and the
second
> > one did when Xorg is launched.
> > I am not sure if these errors are actually "BUGs" or not.
> > Wish someone gives me some advice for them.
> 
> This bug is already fixed in latest git. Just upgrade the kernel.
> 
> Marcin