On Sat, Jan 06 2007, Laurent Riffard wrote: > Le 05.01.2007 07:02, Andrew Morton a écrit : > >Temporarily at > > > > http://userweb.kernel.org/~akpm/2.6.20-rc3-mm1/ > > > >will appear later at > > > > > > ftp://ftp.kernel.org/pub/linux/kernel/people/akpm/patches/2.6/2.6.20-rc3/2.6.20-rc3-mm1/ > > Hello, > > got this with 2.6.20-rc3-mm1: > > ======================= > SysRq : Show Blocked State > > free sibling > task PC stack pid father child younger older > umount D C013135E 6044 1168 1150 (NOTLB) > de591ae4 00000086 de591abc c013135e dff979c8 c012a6fe 00000046 > 00000007 dfd94ac0 128d3000 00000026 00000000 dfd94bcc dff979c8 > de591ae4 dffda038 00000002 dff979c0 dff979bc dff979c8 de591b10 > c012d600 dff979f8 00000000 Call Trace: > [<c012d600>] synchronize_qrcu+0x70/0x8c > [<c01bede4>] __make_request+0x4c/0x29b > [<c01bd24b>] generic_make_request+0x1b0/0x1de > [<c01bf354>] submit_bio+0xda/0xe2
That's certainly a barrier related hang. Since raid and XFS both hang as well, it might be the same problem. I'll get it fixed up, don't expect anything before monday though. -- Jens Axboe