panic: RB_CHILDLESS_P

[Thomas Klausner <wiz%NetBSD.org@localhost>]

Hi!

I just had a panic on current as of April 8, amd64.


panic: kernel diagnostic assertion "RB_CHILDLESS_P(self->rb_nodes[which])" failed: file "/archive/foreign/src/sys/lib/libkern/../../../common/lib/libc/gen/rb.c", line 782
cpu11: Begin traceback...
vpanic() at netbsd:vpanic+0x140
cd_play_msf() at netbsd:cd_play_msf
rb_tree_remove_node() at netbsd:rb_tree_remove_node+0x31f
drm_vma_offset_remove() at netbsd:drm_vma_offset_remove+0x2f
ttm_bo_release() at netbsd:ttm_bo_release+0x51
radeon_bo_unref() at netbsd:radeon_bo_unref+0x3f
radeon_gem_object_free() at netbsd:radeon_gem_object_free+0x21
drm_gem_object_handle_unreference_unlocked() at netbsd:drm_gem_object_handle_unreference_unlocked+0x124
drm_gem_handle_delete() at netbsd:drm_gem_handle_delete+0x88
drm_ioctl() at netbsd:drm_ioctl+0x11e
sys_ioctl() at netbsd:sys_ioctl+0x101
syscall() at netbsd:syscall+0x15b
--- syscall (number 54) ---
7f7ff46e9eea:
cpu11: End traceback...

I was starting multimedia/mpv at that time and expecting a window to
pop up, but it didn't.

crashdump exists.
-rw-------  1 root  wheel  1315387301 Apr 11 18:14 netbsd.95.core.gz
-rw-------  1 root  wheel      648089 Apr 11 18:14 netbsd.95.gz

 Thomas