[Devel] Re: nsproxy c/r bug?

[Nathan Lynch]

"Serge E. Hallyn" <serue at us.ibm.com> writes:
> Unable to handle kernel pointer dereference at virtual kernel address fffffffd132b4000
> Oops: 0038 [#4] SMP 
> CPU: 0 Tainted: G      D    2.6.30-rc3-00080-g2b1009c #261
> Process ns_exec (pid: 3842, task: 000000001fdf9d50, ksp: 0000000012d83d90)
> Krnl PSW : 0404100180000000 00000000000ae266 (kmem_cache_alloc+0xa6/0x104)
>            R:0 T:1 IO:0 EX:0 Key:0 M:1 W:0 P:0 AS:0 CC:1 PM:0 EA:3
> Krnl GPRS: 000003ff00000000 0000000000000000 00000000004bf308 000000000000063b
>            00000000000ae20e 0000000000422088 0000000000dc5098 0000000000000030
>            000000000005f0ea 000000001fc19200 00000000000000d0 0000000012d83d58
>            0700000000000400 00000000004075a8 fffffffd132b4090 0000000012d83d58
> Krnl Code: 00000000000ae256: a7f4000e		brc	15,ae272
>            00000000000ae25a: e31060140016	llgf	%r1,20(%r6)
>            00000000000ae260: eb110003000d	sllg	%r1,%r1,3
>           >00000000000ae266: e321e0000004	lg	%r2,0(%r1,%r14)
>            00000000000ae26c: e32060000024	stg	%r2,0(%r6)
>            00000000000ae272: e3c0b0a00024	stg	%r12,160(%r11)
>            00000000000ae278: 8000b0a0		ssm	160(%r11)
>            00000000000ae27c: a7a18000		tmll	%r10,32768
> Call Trace:
> ([<00000000000ae20e>] kmem_cache_alloc+0x4e/0x104)
>  [<000000000005f0ea>] create_new_namespaces+0x4e/0x204
>  [<000000000005f4fa>] unshare_nsproxy_namespaces+0x82/0xf8
>  [<000000000003c222>] SyS_unshare+0x11a/0x2f4
>  [<0000000000026b94>] sysc_do_restart+0x20/0x26
>  [<0000004d7db60ce6>] 0x4d7db60ce6

Turning on slab/slub debugging might help, if you haven't already done
so.
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