Re: kern/49424: DRMKMS failure on Lenovo T410s with amd64/7.0_BETA

[Havard Eidnes <he%NetBSD.org@localhost>]

The following reply was made to PR kern/49424; it has been noted by GNATS.

From: Havard Eidnes <he%NetBSD.org@localhost>
To: gnats-bugs%NetBSD.org@localhost
Cc: 
Subject: Re: kern/49424: DRMKMS failure on Lenovo T410s with amd64/7.0_BETA
Date: Tue, 02 Dec 2014 15:31:24 +0100 (CET)

 Hi,
 
 here's some more info, transcribed from screen dumps via my cell
 phone of the laptop screen:
 
 ...
 agp0 at pchb0: G4X-family chipset
 agp0: detected 32252k stolen memory
 agp0: aperture at 0xd0000000, size 0x10000000
 i915drmkms0 at pci0 dev 2 function 0: Intel Iron Lake Integrated Graphics Device (rev. 0x02)
 drm: Memory usable by graphics device: 512M
 panic: lockdebug_lookup: uninitialized lock (lock=0xffffffff81158000, from=ffffffff8053c715)
 fatal breakpoint trap in supervisor mode
 trap type 1 code 0 rip ffffffff8028dfed cs 8 rflags 246 cr2 0 ilevel 8 rsp fffffffff81383708
 curlwp 0xffffffff811132c0 pid 0.1 lowest kstack 0xffffffff813802c0
 Stopped in pid 0.1 (system) at  netbsd:breakpoint+0x5:  leave
 db{0}> 
 
 db{0}> trace
 breakpoint() at netbsd:breakpoint+0x5
 vpanic() at netbsd:vpanic+0x13c
 snprintf() at netbsd:snprintf
 lockdebug_locked() at netbsd:lockdebug_locked
 mutex_enter() at netbsd:mutex_enter+0x43f
 intel_disable_gt_powersave() at netbsd:intel_disable_gt_powersave+0x104
 intel_uncore_sanitize() at netbsd:intel_uncore_sanitize+0x13
 i915_driver_load() at netbsd:i915_driver_load+0x8da
 drm_dev_register() at netbsd:drm_dev_register+0x87
 drm_pci_attach() at netbsd:drm_pci_attach+0x2b7
 i915drmkms_attach() at netbsd:i915drmkms_attach+0x9b
 config_attach_loc()
 pci_probe_device()
 pci_enumerate_bus()
 pcirescan()
 pciattach()
 config_attach_loc()
 mp_pci_scan()
 mainbus_attach()
 config_attach_loc()
 cpu_configure()
 main()
 db{0}>
 
 Best regards,
 
 - Havard