Versatile Express boot failed from build 293 : gator_module_init failed

[Naresh Kamboju]

Machine: ARM-Versatile Express
Device name : vexpress-a9-02

Linux kernel:
 Linux version 3.10.0-rc2-00182-g4f1a63b (jenkins-build@ip-10-12-90-216) (gcc version 4.7.4 20130508 (prerelease) (Linaro GCC 4.7-2013.05) ) #1 SMP Mon May 27 03:42:08 UTC 2013

Build number:
http://snapshots.linaro.org/android/~linaro-android/vexpress-linaro-mp/293
...
http://snapshots.linaro.org/android/~linaro-android/vexpress-linaro-mp/303

LAVA Job log:
http://validation.linaro.org/lava-server/scheduler/job/55032/log_file
...
http://validation.linaro.org/lava-server/scheduler/job/55836/log_file

Kernel crash dump:
--------------------------
[ 7.315479] ------------[ cut here ]------------
[ 7.329321] kernel BUG at /mnt/jenkins/workspace/linaro-android_vexpress-linaro-mp/build/kernel/linaro/vexpress/drivers/gator/gator_iks.c:43!
[ 7.367365] Internal error: Oops - BUG: 0 [#1] SMP THUMB2
[ 7.383531] Modules linked in: gator(+)
[ 7.395040] CPU: 1 PID: 1 Comm: init Not tainted 3.10.0-rc2-00182-g4f1a63b #1
[ 7.416421] task: ef02ba40 ti: ef03e000 task.ti: ef03e000
[ 7.432692] PC is at gator_module_init+0x61/0xdc [gator]
[ 7.448610] LR is at of_find_node_by_type+0x37/0x44
[ 7.463221] pc : [<bf80e072>] lr : [<c030504b>] psr: 80070033
[ 7.463221] sp : ef03fe40 ip : bf808ad8 fp : c062f200
[ 7.497623] r10: bf80888c r9 : bf80e011 r8 : ef03e000
[ 7.513269] r7 : 00000001 r6 : bf8089b8 r5 : 00000000 r4 : 00000000
[ 7.532823] r3 : 00000004 r2 : c0690d20 r1 : 40070013 r0 : 00000000
[ 7.552380] Flags: Nzcv IRQs on FIQs on Mode SVC_32 ISA Thumb Segment user
[ 7.574280] Control: 50c5387d Table: 8e5cc04a DAC: 55555555
...
[ 9.036530] [<bf80e072>] (gator_module_init+0x61/0xdc [gator]) from [<c0008581>] (do_one_initcall+0xb5/0x100)
[ 9.066276] [<c0008581>] (do_one_initcall+0xb5/0x100) from [<c005c89d>] (load_module+0xfd9/0x1598)
[ 9.093142] [<c005c89d>] (load_module+0xfd9/0x1598) from [<c005cee1>] (SyS_init_module+0x85/0x94)
[ 9.119753] [<c005cee1>] (SyS_init_module+0x85/0x94) from [<c000cd41>] (ret_fast_syscall+0x1/0x46)
[ 9.146610] Code: 4b1c 681b 429c d000 (de02) 4e1a
[ 9.160962] ---[ end trace 8e842acf834148e7 ]---
[ 9.174787] Kernel panic - not syncing: Fatal exception

[Tixy (Jon Medhurst) (tixy)]

Looks like that vexpress board isn't booting using a device-tree and
gator assumes there is a device-tree to parse. I'll come up with a patch
to prevent it calling BUG() in that case.

[Tixy (Jon Medhurst) (tixy)]

Patch to fix this issue is cow in linux-linaro. See https://git.linaro.org/gitweb?p=kernel/linux-linaro-tracking.git;a=commit;h=b824ccf16727302f49f6431ebb765f85994e4806

[Naresh Kamboju (naresh-kamboju)]

with the above comment the issues fixed and released