Re: renesas-drivers-2015-11-24-v4.4-rc2

[Laurent Pinchart <laurent.pinchart@ideasonboard.com>]

Hi Geert,

On Tuesday 24 November 2015 14:39:50 Geert Uytterhoeven wrote:
> On Tue, Nov 24, 2015 at 2:38 PM, Geert Uytterhoeven wrote:
> > I've pushed renesas-drivers-2015-11-24-v4.4-rc2 to
> > https://git.kernel.org/cgit/linux/kernel/git/geert/renesas-drivers.git
> > This tree is meant to ease development of platform support and drivers for
> > Renesas ARM ("shmobile") SoCs. It's created by merging (a) the for-next
> > branches of various subsystem trees and (b) branches with driver code
> > submitted or planned for submission to maintainers into the development
> > branch of Simon Horman's renesas.git tree.
> > 
> > Today's version is based on renesas-devel-20151124-v4.4-rc2.
> > 
> > Included branches with driver code:
> >   - sh-pfc-for-v4.5
> >   - topic/rcar-dmac-residue-v1
> >   - topic/rcar-dmac-hamza-v3
> >   - topic/scif-iommu
> >   - topic/sci-clk-cleanup-v2
> >   - topic/pfc-scif-clk
> >   - topic/scif-brg
> >   - topic/cpg-mssr-v6
> >   - topic/r8a7795-drivers-sh-v1
> >   - topic/cs2000-v6
> >   -
> >   git://git.kernel.org/pub/scm/linux/kernel/git/horms/renesas.git#topic/r
> >   8a7795-sound-v6 -
> >   git://linuxtv.org/pinchartl/media.git#vsp1-kms-20151112~4
> 
> When running "modetest -D rcar-du" on koelsch (shmobile_defconfig), it
> crashes with:

I can't reproduce that. Which version (git commit ID if possible) of modetest 
are you using ?

> Unable to handle kernel NULL pointer dereference at virtual address 00000004
> pgd = ee2f8000
> [00000004] *pgd¿ca8831
> Internal error: Oops: 17 [#1] SMP ARM
> CPU: 1 PID: 2408 Comm: lt-modetest Not tainted
> 4.4.0-rc2-01622-g1f9e8ee5963d826a #379
> Hardware name: Generic R8A7791 (Flattened Device Tree)
> task: ee078dc0 ti: eeb50000 task.ti: eeb50000
> PC is at drm_platform_set_busid+0x1c/0x58
> LR is at drm_setversion+0x90/0x16c
> pc : [<c0265aac>]    lr : [<c0260644>]    psr: a0070013
> sp : eeb51e10  ip : eeb51e28  fp : eeb51e24
> r10: ee1d6000  r9 : 00000051  r8 : c0106407
> r7 : edf93f40  r6 : eeac6600  r5 : eeb51e68  r4 : eeac6600
> r3 : c06aca24  r2 : 00000000  r1 : c061181a  r0 : 024000c0
> Flags: NzCv  IRQs on  FIQs on  Mode SVC_32  ISA ARM  Segment none
> Control: 10c5307d  Table: 6e2f806a  DAC: 00000051
> Process lt-modetest (pid: 2408, stack limit = 0xeeb50210)
> Stack: (0xeeb51e10 to 0xeeb52000)
> 1e00:                                     c06aca24 ee1d6000 eeb51e44
> eeb51e28 1e20: c0260644 c0265a9c eeb51e68 00000010 c0538920 edf93f40
> eeb51f14 eeb51e48 1e40: c0260b38 c02605c0 00000041 ee4213b8 edffce98
> 00000000 c02605b4 00000000 1e60: bebf09f8 00000007 00000001 00000004
> ffffffff ffffffff ee1b77d0 ee421198 1e80: c0694658 00000003 eeb51f5c
> 00000001 eea9f000 c000ffa4 ee245dc0 eeb51f5c 1ea0: eeb51f4c eeb51eb0
> c00dec3c c00daba4 ee1b77d0 ee421198 88056cab 00000005 1ec0: eea9f019
> 00000000 00000000 ee4237f8 edffce98 00000101 00000000 0000006c 1ee0:
> 00000000 00000000 00000000 bebf09f8 edffce98 ee245dc0 c0106407 00000003
> 1f00: eeb50000 00000000 eeb51f7c eeb51f18 c00e2710 c02608b4 ee245dc8
> eea9f000 1f20: 00000020 edffce98 eeb51f4c eeb51f38 c00db434 c00cd76c
> edfc8c00 00000003 1f40: eeb51f94 eeb51f50 c00d20e4 c00db3e0 00000000
> bebf09f8 ee245dc0 ee245dc0 1f60: c0106407 00000003 eeb50000 00000000
> eeb51fa4 eeb51f80 c00e2870 c00e21a4 1f80: ffffffff bebf0a70 bebf09f8
> c0106407 00000036 c000ffa4 00000000 eeb51fa8 1fa0: c000fde0 c00e2840
> bebf0a70 bebf09f8 00000003 c0106407 bebf09f8 ffffffff 1fc0: bebf0a70
> bebf09f8 c0106407 00000036 b6f4c988 ffffffff 00000001 0000000f 1fe0:
> b6f5d180 bebf09dc b6f484bb b6ec1ed6 80070030 00000003 00000000 00000000
> Backtrace:
> [<c0265a90>] (drm_platform_set_busid) from [<c0260644>]
> (drm_setversion+0x90/0x16c)
>  r4:ee1d6000 r3:c06aca24
> [<c02605b4>] (drm_setversion) from [<c0260b38>] (drm_ioctl+0x290/0x408)
>  r7:edf93f40 r6:c0538920 r5:00000010 r4:eeb51e68
> [<c02608a8>] (drm_ioctl) from [<c00e2710>] (do_vfs_ioctl+0x578/0x69c)
>  r10:00000000 r9:eeb50000 r8:00000003 r7:c0106407 r6:ee245dc0 r5:edffce98
>  r4:bebf09f8
> [<c00e2198>] (do_vfs_ioctl) from [<c00e2870>] (SyS_ioctl+0x3c/0x64)
>  r10:00000000 r9:eeb50000 r8:00000003 r7:c0106407 r6:ee245dc0 r5:ee245dc0
>  r4:bebf09f8
> [<c00e2834>] (SyS_ioctl) from [<c000fde0>] (ret_fast_syscall+0x0/0x3c)
>  r8:c000ffa4 r7:00000036 r6:c0106407 r5:bebf09f8 r4:bebf0a70 r3:ffffffff
> Code: e590210c e1a04001 e59f0034 e59f1034 (e5923004)
> ---[ end trace bf083d5d69d2439d ]---

-- 
Regards,

Laurent Pinchart