Ok, this is more infos about what I reported earlier (it was DRM crash on VT switch & suspend).
Actually, the problem happens when closing the DRM files, which I had happening with VT switch & suspend because I was use DRIReInit patch. Without this (now that DRM suspend is merged), I only see this problem on server exit. Kernel is 2.6.0-test2 with some additional powermac stuffs that shouldn't be related. The oops log is: Aug 4 17:10:49 gaston kernel: Oops: kernel access of bad area, sig: 11 [#1] Aug 4 17:10:49 gaston kernel: NIP: F5075164 LR: F5072890 SP: EEB9FEB0 REGS: eeb9fe00 TRAP: 0301 Not tainted Aug 4 17:10:49 gaston kernel: MSR: 00009032 EE: 1 PR: 0 FP: 0 ME: 1 IR/DR: 11 Aug 4 17:10:49 gaston kernel: DAR: 6B6B6B6B, DSISR: 40000000 Aug 4 17:10:49 gaston kernel: TASK = eec8c7a0[2284] 'XFree86' Last syscall: 6 Aug 4 17:10:49 gaston kernel: GPR00: EEA68578 EEB9FEB0 EEC8C7A0 F5090000 B0080000 E4B4CC50 B0000000 00000410 Aug 4 17:10:49 gaston kernel: GPR08: 00000000 6B6B6B6B 6B6B6B6B 6B6B6B6B EEA68578 Aug 4 17:10:49 gaston kernel: Call trace: Aug 4 17:10:49 gaston kernel: [f5072890] radeon_takedown+0x1e0/0x344 [radeon] Aug 4 17:10:49 gaston kernel: [c0078160] __fput+0x148/0x154 Aug 4 17:10:49 gaston kernel: [c0078014] fput+0x3c/0x40 Aug 4 17:10:49 gaston kernel: [c0076410] filp_close+0x60/0x9c Aug 4 17:10:49 gaston kernel: [c0007a5c] ret_from_syscall+0x0/0x44 It's actually dying in drm_ioremapfree() called by radeon_takedown(), This is a uninorth based PowerMac, so it's using the vmap mecanism (cant_use_aperture is 1). It's accessing a freed object (apparently, a pointer set to 6b6b6b6b, so a pointer retreived within a freed object). This is obviously triggered by slab poisoning. One strange thing though is that only maps of type _DRM_REGISTERS and _DRM_FRAME_BUFFER are freed via this codepath. Also, the above address shows, in the disassembly, that we did enter the "AGP" case of drm_ioremapfree(), we didn't just do iounmap(). It seems the actual crash location is within drm_lookup_map(). Like if a freed map was still in there... Anything more I can do to help track this down ? -- Benjamin Herrenschmidt <[EMAIL PROTECTED]> ------------------------------------------------------- This SF.Net email sponsored by: Free pre-built ASP.NET sites including Data Reports, E-commerce, Portals, and Forums are available now. Download today and enter to win an XBOX or Visual Studio .NET. http://aspnet.click-url.com/go/psa00100003ave/direct;at.aspnet_072303_01/01 _______________________________________________ Dri-devel mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/dri-devel
