topic Re: spinlock bad magic?? in i.MX Processors

spinlock bad magic??

xiaolong_zhang — Mon, 16 Sep 2019 02:23:25 GMT

this is my app VKFrame log (print this log,my system hung;kernel3.0.35 ;Constant temperature 40℃):

BUG: spinlock bad magic on CPU#0, QThread/1441
lock: bf52aca8, .magic: 00000000, .owner: QThread/1441, .owner_cpu: 0
[<801046d0>] (unwind_backtrace+0x0/0xf8) from [<8032fb90>] (do_raw_spin_unlock+0x80/0xc4)
[<8032fb90>] (do_raw_spin_unlock+0x80/0xc4) from [<805e8e84>] (_raw_spin_unlock_irqrestore+0xc/0x38)
[<805e8e84>] (_raw_spin_unlock_irqrestore+0xc/0x38) from [<801c1010>] (poll_freewait+0x30/0xa0)
[<801c1010>] (poll_freewait+0x30/0xa0) from [<801c2278>] (do_sys_poll+0x350/0x410)
[<801c2278>] (do_sys_poll+0x350/0x410) from [<801c23e8>] (sys_poll+0x5c/0xcc)
[<801c23e8>] (sys_poll+0x5c/0xcc) from [<800fdf80>] (ret_fast_syscall+0x0/0x30)
*** glibc detected *** ./VKFrame: malloc(): memory corruption: 0x2d00e160 ***

what to be caused by magic = 00000000?

Re: spinlock bad magic??

igorpadykov — Mon, 16 Sep 2019 04:19:19 GMT

Hi zhang

to avoid this message one can try to rebuild all image with custom

application from scratch. Also one can try with new kernels from nxp repository

linux-imx - i.MX Linux kernel

Best regards
igor
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Re: spinlock bad magic??

xiaolong_zhang — Mon, 16 Sep 2019 04:48:23 GMT

Hi igorpadykov
There's a bunch of machines.Using the same kernel, there are two machines in the thermostat for testing. One will happen every 24 hours or so, and the other has no abnormality. How to eliminate hardware problems?

Re: spinlock bad magic??

igorpadykov — Mon, 16 Sep 2019 05:59:38 GMT

Hi zhang

for every machine own image should be created, not recommended to use same binaries.