Re: Panic on drm-devel v5.5.19.g20210909

On 9/11/21 9:53 AM, Pete Wright via freebsd-x11 wrote:
>
>
> On 9/11/21 8:17 AM, Vladimir Kondratyev wrote:
>> On 11.09.2021 02:53, Pete Wright via freebsd-x11 wrote:
>>> hello,
>>> i got the following panic after upgrading my current laptop to
>>> drm-devel-v5.5.19.g20210909 (3df6598adf625a18a7c762b2d48b4c3dd7925838):
>>>
>>> panic: acquiring blockable sleep lock with spinlock or critical section
>>> held (sleep mutex) linux_wq_exec @
>>> /usr/home/pete/git/freebsd/sys/compat/linuxkpi/common/src/linux_work.c:105 
>>>
>>> cpuid = 5
>>> time = 1631315668
>>> KDB: stack backtrace:
>>> db_trace_self_wrapper() at db_trace_self_wrapper+0x2b/frame
>>> 0xfffffe011d086060
>>> vpanic() at vpanic+0x187/frame 0xfffffe011d0860c0
>>> panic() at panic+0x43/frame 0xfffffe011d086120
>>> witness_checkorder() at witness_checkorder+0xe78/frame 
>>> 0xfffffe011d0862f0
>>> __mtx_lock_flags() at __mtx_lock_flags+0x94/frame 0xfffffe011d086340
>>> linux_queue_work_on() at linux_queue_work_on+0x9a/frame 
>>> 0xfffffe011d086380
>>> dma_fence_signal() at dma_fence_signal+0xc0/frame 0xfffffe011d0863d0
>>> dma_resv_add_shared_fence() at dma_resv_add_shared_fence+0x96/frame
>>> 0xfffffe011d086420
>>> i915_vma_move_to_active() at i915_vma_move_to_active+0x7e/frame
>>> 0xfffffe011d086460
>>> i915_gem_do_execbuffer() at i915_gem_do_execbuffer+0x13d7/frame
>>> 0xfffffe011d086670
>>> i915_gem_execbuffer2_ioctl() at i915_gem_execbuffer2_ioctl+0x195/frame
>>> 0xfffffe011d0866e0
>>> drm_ioctl_kernel() at drm_ioctl_kernel+0x72/frame 0xfffffe011d086730
>>> drm_ioctl() at drm_ioctl+0x2bf/frame 0xfffffe011d086820
>>> linux_file_ioctl() at linux_file_ioctl+0x297/frame 0xfffffe011d086880
>>> kern_ioctl() at kern_ioctl+0x202/frame 0xfffffe011d0868f0
>>> sys_ioctl() at sys_ioctl+0x124/frame 0xfffffe011d0869c0
>>> amd64_syscall() at amd64_syscall+0x12e/frame 0xfffffe011d086af0
>>> fast_syscall_common() at fast_syscall_common+0xf8/frame 
>>> 0xfffffe011d086af0
>>> --- syscall (54, FreeBSD ELF64, sys_ioctl), rip = 0x80f1ae3ca, rsp =
>>> 0x7fffffffc8d8, rbp = 0x7fffffffc970 ---
>>> KDB: enter: panic
>>>
>>>
>>> I have a core and and additional info if that'll help debug this issue.
>>> it happened three times while doing normal web+shell work. i've
>>> reverted to the commit previous this one and it looks like the 
>>> system no
>>> longer panic's.
>>>
>>> -pete
>>>
>> Try to revert this commit:
>> https://github.com/freebsd/drm-kmod/commit/787ffa8c48ecd02310ce2ec27c4b84d1898201e5 
>>
>>
> Thanks for the heads up on that.  Just reverted on my system and it 
> seems better on my end now.  Let me know if there is any additional 
> debugging i can do to fix the original sleep lock issue.
>

hrm - spoke too soon, just had the same panic with that commit 
reverted.  made it most of the day with several suspend/resume's as well 
as web browsing and watching videos.

-pete

-- 
Pete Wright
pete@nomadlogic.org
@nomadlogicLA