PR 52347?

[Phil Nelson <phil%NetBSD.org@localhost>]

Hello,

   I was wondering if anyone is working on solving PR 52347?   "ww mutex class mismatch"
I'm getting it averaging about once every other working day on my main machine.  

  8.99.34 did crash, but I couldn't get a good backtrace.  This is a backtrace for a
8.99.30 a few days ago.

# crash -M netbsd.34.core  -N netbsd.34
Crash version 8.99.34, image version 8.99.30.
WARNING: versions differ, you may not be able to examine this image.
System panicked: kernel diagnostic assertion "(ctx->wwx_class == mutex->wwm_u.ctx->wwx_class)" failed: file "../../../../external/bsd/drm2/linux/linux_ww_mutex.c", line 304 ww mutex class mismatch: 0xffffffff816994c0 != 0xffffffff809aed64
Backtrace from time of crash is available.
crash> bt
_KERNEL_OPT_NARCNET() at 0
?() at ffffecccbcb54a38
vpanic() at vpanic+0x178
ch_voltag_convert_in() at ch_voltag_convert_in
ww_mutex_lock_wait_sig() at ww_mutex_lock_wait_sig+0x199
linux_ww_mutex_lock_interruptible() at linux_ww_mutex_lock_interruptible+0x10a
ttm_eu_reserve_buffers() at ttm_eu_reserve_buffers+0xce
radeon_bo_list_validate() at radeon_bo_list_validate+0x79
radeon_cs_ioctl() at radeon_cs_ioctl+0x842
drm_ioctl() at drm_ioctl+0x23b
sys_ioctl() at sys_ioctl+0x11c
syscall() at syscall+0x173
--- syscall (number 54) ---
7d704bd1a72a:
crash> 

--Phil