Hi Yonetani, There was a correction on February 3th specifically for x86_64. I don't know if that's related to the panic somehow or not, but definitely for the rebalance issue you're having.
http://gitweb.dragonflybsd.org/dragonfly.git/commit/7a3eee88d3ffab887e1b2d812672f20071d39947 Cheers, Antonio Huete 2011/2/9 YONETANI Tomokazu <[email protected]>: > Hello. > Caught this panic this morning during `hammer cleanup' on a Atom D510 > based system with 4G bytes of RAM installed and running x86_64 kernel. > It was running pbulk at the same time. The kernel was built from source > s of 8d2576868. The `insufficient buffers to rebalance the tree' warnings > have been observed before the system panicked. The global variable nbuf > (which holds the value for vfs.nbuf sysctl node) contains 1475 in the kgdb > session, which is much lower than the value seen on other systems running > 32-bit kernel. > > : > Feb 9 05:05:09 atom64 kernel: hammer: System has insufficient buffers to > rebalance the tree. nbuf < 3969 > Feb 9 05:19:01 atom64 kernel: hammer: System has insufficient buffers to > rebalance the tree. nbuf < 3969 > Feb 9 05:27:23 atom64 syslogd: kernel boot file is /boot/kernel/kernel > Feb 9 05:27:23 atom64 kernel: panic: reassignbuf: dup lblk vp > 0xffffffe0136df000 bp 0xffffffe00df730b0 > > And the backtrace follows: > > #4 0xffffffff802a9c1e in panic ( > fmt=0xffffffff80530140 "reassignbuf: dup lblk vp %p bp %p") > at /usr/src/sys/kern/kern_shutdown.c:799 > #5 0xffffffff8031262f in reassignbuf (bp=0xffffffe00df730b0) > at /usr/src/sys/kern/vfs_subr.c:1046 > #6 0xffffffff802fa526 in bundirty (bp=0xffffffe00df730b0) > at /usr/src/sys/kern/vfs_bio.c:1247 > #7 0xffffffff802fe705 in bawrite (bp=0xffffffe00df730b0) > at /usr/src/sys/kern/vfs_bio.c:1025 > #8 0xffffffff802fe98a in vfs_bio_awrite (bp=0xffffffe00df730b0) > at /usr/src/sys/kern/vfs_bio.c:1937 > #9 0xffffffff802fedae in flushbufqueues (q=BQUEUE_DIRTY) > at /usr/src/sys/kern/vfs_bio.c:2694 > #10 0xffffffff802ff041 in buf_daemon () at /usr/src/sys/kern/vfs_bio.c:2525 > #11 0xffffffff8029961e in suspend_kproc (td=0x0, timo=0) > at /usr/src/sys/kern/kern_kthread.c:189 > Backtrace stopped: previous frame inner to this frame (corrupt stack?) > (kgdb) fr 5 > #5 0xffffffff8031262f in reassignbuf (bp=0xffffffe00df730b0) > at /usr/src/sys/kern/vfs_subr.c:1046 > 1046 panic("reassignbuf: dup lblk vp %p bp > %p", > (kgdb) l > 1041 buf_rb_tree_RB_REMOVE(&vp->v_rbdirty_tree, > bp); > 1042 bp->b_flags &= ~B_VNDIRTY; > 1043 } > 1044 if ((bp->b_flags & B_VNCLEAN) == 0) { > 1045 if > (buf_rb_tree_RB_INSERT(&vp->v_rbclean_tree, bp)) { > 1046 panic("reassignbuf: dup lblk vp %p bp > %p", > 1047 vp, bp); > 1048 } > 1049 bp->b_flags |= B_VNCLEAN; > 1050 } > (kgdb) > > Best Regards, > YONETANI Tomokazu. >
