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SubjectRe: [ANNOUNCE] 3.0.1-rt8 - Regression to 3.0-rt7
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Hi Peter

Am Donnerstag, 11. August 2011, 18:22:54 schrieb Tim Sander:
> Am Donnerstag, 11. August 2011, 18:14:45 schrieb Peter Zijlstra:
> > On Thu, 2011-08-11 at 18:04 +0200, Tim Sander wrote:
> > > kernel BUG at kernel/posix-cpu-timers.c:1315!
> > > Unable to handle kernel NULL pointer dereference at virtual address
> > > 00000000 pgd = c0004000
> > > [00000000] *pgd=00000000
> > > Internal error: Oops: 817 [#1] PREEMPT
> > > Modules linked in: i2c_imx(+) netx netx_reset dspload fpgaload
> > > mxc_nand(+) nand nand_ids nand_ecc CPU: 0 Not tainted
> > > (3.0.0-pmx-rt8-00009-g39305ab #167)
> > > PC is at __bug+0x24/0x30
> > > LR is at walk_stackframe+0x24/0x40
> > > pc : [<c002cbf0>] lr : [<c002cbb0>] psr: 60000113
> > > sp : c782ff40 ip : c782fe28 fp : c782ff4c
> > > r10: 00000001 r9 : 00000000 r8 : c78663c0
> > > r7 : c030463c r6 : c782e000 r5 : 00000000 r4 : c78663c0
> > > r3 : 00000000 r2 : 00000001 r1 : c782fe58 r0 : 00000034
> > > Flags: nZCv IRQs on FIQs on Mode SVC_32 ISA ARM Segment kernel
> > > Control: 00c5387d Table: 87b70008 DAC: 00000017
> > > Process posixcputmr/0 (pid: 6, stack limit = 0xc782e268)
> > > Stack: (0xc782ff40 to 0xc7830000)
> > > ff40: c782ff8c c782ff50 c005a5c0 c002cbd8 00000000 c782ff54 c782ff54
> > > 00000000 ff60: 00000000 c78663c0 00000000 c782e000 c030463c c78663c0
> > > 00000000 00000001 ff80: c782ffbc c782ff90 c005a88c c005a594 00000000
> > > c7817f28 00000000 c782ffcc ffa0: c005a800 00000000 00000000 00000000
> > > c782fff4 c782ffc0 c00570f0 c005a80c ffc0: c7817f28 00000000 00000000
> > > 00000000 c782ffd0 c782ffd0 c7817f28 c0057064 ffe0: c0040868 00000013
> > > 00000000 c782fff8 c0040868 c0057070 cccdcd6c ffdec890 Backtrace:
> > > [<c002cbcc>] (__bug+0x0/0x30) from [<c005a5c0>]
> > > (__run_posix_cpu_timers+0x38/0x278) [<c005a588>]
> > > (__run_posix_cpu_timers+0x0/0x278) from [<c005a88c>]
> > > (posix_cpu_timers_thread+0x8c/0x124) [<c005a800>]
> > > (posix_cpu_timers_thread+0x0/0x124) from [<c00570f0>]
> > > (kthread+0x8c/0x94) [<c0057064>] (kthread+0x0/0x94) from [<c0040868>]
> > > (do_exit+0x0/0x2d8)
> > >
> > > r7:00000013 r6:c0040868 r5:c0057064 r4:c7817f28
> > >
> > > Code: e59f0010 e1a01003 eb086a88 e3a03000 (e5833000)
> > > ---[ end trace d632afeaa11559d4 ]---
> >
> > Yay a new one, and this is a PREEMPT_LL build right? /me goes poke at
> > it.
The last email was wrong, it was INDEED a CONFIG_PREEMPT_LL=y config.
I checked the /proc/config.gz file. It is also the rt8 kernel based on the
3.0 (and NOT the 3.0.1) kernel. Will test the stuff on 3.0.1 later or tomorrow.

Sorry i just compiled to much kernels today...

Best regards
Tim


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