Dump header from device: /dev/gpt/swap Architecture: amd64 Architecture Version: 2 Dump Length: 1084706816 Blocksize: 512 Dumptime: Sat Mar 11 17:47:10 2017 Hostname: akai.skunkwerks.at Magic: FreeBSD Kernel Dump Version String: FreeBSD 12.0-CURRENT #4 r314337+3d00b61e5dbd(drm-next): Sat Mar 4 19:50:38 UTC 2017 root@akai:/usr/obj/usr/src/sys/GENERIC Panic String: pfs_add_node(): homonymous siblings Dump Parity: 1512531746 Bounds: 3 Dump Status: good This occurs repeatedly: - under X11 session using i3 window manager - starting a linux binary successfully - getting i3 to transfer it to a window that is not active - system is 12-CURRENT 3d00b61e5dbd from drm-next branch Coredump available on request, I can surely do more debugging when given some directions.
root@akai /u/o/u/s/s/GENERIC# kgdb kernel.debug /var/crash/vmcore.last GNU gdb 6.1.1 [FreeBSD] Copyright 2004 Free Software Foundation, Inc. GDB is free software, covered by the GNU General Public License, and you are welcome to change it and/or distribute copies of it under certain conditions. Type "show copying" to see the conditions. There is absolutely no warranty for GDB. Type "show warranty" for details. This GDB was configured as "amd64-marcel-freebsd"... Unread portion of the kernel message buffer: [327] vt_kms_postswitch() at vt_kms_postswitch+0x52/frame 0xfffffe0464f80430 [327] vt_window_switch() at vt_window_switch+0xdb/frame 0xfffffe0464f80470 [327] vtterm_cngrab() at vtterm_cngrab+0x20/frame 0xfffffe0464f80490 [327] cngrab() at cngrab+0x32/frame 0xfffffe0464f804b0 [327] vpanic() at vpanic+0x10a/frame 0xfffffe0464f80530 [327] kassert_panic() at kassert_panic+0x126/frame 0xfffffe0464f805a0 [327] pfs_add_node() at pfs_add_node+0x114/frame 0xfffffe0464f805d0 [327] pfs_create_link() at pfs_create_link+0xc5/frame 0xfffffe0464f80620 [327] linprocfs_dirfill() at linprocfs_dirfill+0x9c/frame 0xfffffe0464f80680 [327] pfs_iterate() at pfs_iterate+0x251/frame 0xfffffe0464f806f0 [327] Dumping 1034 out of 16254 MB: (CTRL-C to abort) ..2%..11%..21%..31%..41%..52%..61%..72%..81%..92% ... Loaded symbols for /boot/kernel/debugfs.ko #0 doadump (textdump=0) at pcpu.h:232 232 __asm("movq %%gs:%1,%0" : "=r" (td) (kgdb) list 227 static __inline __pure2 struct thread * 228 __curthread(void) 229 { 230 struct thread *td; 231 232 __asm("movq %%gs:%1,%0" : "=r" (td) 233 : "m" (*(char *)OFFSETOF_CURTHREAD)); 234 return (td); 235 } 236 #ifdef __clang__ Current language: auto; currently minimal up #1 0xffffffff83ef3697 in vt_kms_postswitch (arg=<value optimized out>) at /usr/src/sys/modules/drm/drm/../../../dev/drm/linux_fb.c:80 I had to stop here as my source was already pulled for building a new kernel.. I'll finish that and re-try this very repeatable crash.
this does not exist in HEAD, code from drm-next branch. [327] pfs_create_link() at pfs_create_link+0xc5/frame 0xfffffe0464f80620 [327] linprocfs_dirfill() at linprocfs_dirfill+0x9c/frame 0xfffffe0464f80680 [327] pfs_iterate() at pfs_iterate+0x251/frame 0xfffffe0464f806f0 I think this is an incorrect attempt to make /proc/$pid/fd, I have several versions of this.