On Thu, 2009-03-12 at 14:55 +0100, Bas van der Vlies wrote: > OS: debian lenny > kernel release tested: 2.6.28.[1-7] , 2.6.29.rc5 and 2.6.29.rc7 > > NFS-server: solaris 10 zfs/nfs server > > Is this a familiar bug? > {{{ > ------------[ cut here ]------------ > kernel BUG at fs/nfs/write.c:252! > invalid opcode: 0000 [#1] SMP > last sysfs file: /sys/class/infiniband/mlx4_0/ports/1/gids/0 > CPU 2 > Modules linked in: ipmi_devintf ipmi_si ipmi_msghandler autofs4 fuse > dm_snapshot dm_mirror dm_region_hash dm_log dm_mod mptctl rdma_ucm rdma_cm > iw_cm ib_addr ib_ipoib inet_lro ib_ucm ib_cm ib_sa ib_uverbs ib_umad > mlx4_ib ib_mad ib_core dcdbas ehci_hcd uhci_hcd mlx4_core bnx2 crc32 > Pid: 262, comm: pdflush Not tainted 2.6.28.7-sara1 #1 > RIP: 0010:[<ffffffff80309107>] [<ffffffff80309107>] > nfs_do_writepage+0x107/0x1a0 > RSP: 0000:ffff88043e0f7b10 EFLAGS: 00010202 > RAX: 0000000000000001 RBX: ffffe2000e5c63e8 RCX: 0000000000000015 > RDX: 0000000000000000 RSI: 0000000000600020 RDI: ffff8804354a7550 > RBP: ffff88043e0f7b40 R08: ffff880435597268 R09: ffff8804386ea140 > R10: 0000000000000000 R11: 0000000000000000 R12: ffff8804386ea140 > R13: ffff8804354a769c R14: ffffe2000e5c63e8 R15: ffff8804354a75e8 > FS: 0000000000000000(0000) GS:ffff88043f846840(0000) knlGS:0000000000000000 > CS: 0010 DS: 0018 ES: 0018 CR0: 000000008005003b > CR2: 000000005555c18c CR3: 0000000000201000 CR4: 00000000000406e0 > DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 > DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 > Process pdflush (pid: 262, threadinfo ffff88043e0f6000, task ffff88043faf9270) > Stack: > ffff88043e0f7c90 ffffe2000e5c63e8 ffffe2000e5c63e8 ffff88043e0f7be0 > 0000000000000001 0000000000000002 ffff88043e0f7b60 ffffffff803096a9 > ffffe2000e5c63e8 0000000000000001 ffff88043e0f7c80 ffffffff80272707 > Call Trace: > [<ffffffff803096a9>] nfs_writepages_callback+0x19/0x30 > [<ffffffff80272707>] write_cache_pages+0x227/0x460 > [<ffffffff80309690>] ? nfs_writepages_callback+0x0/0x30 > [<ffffffff8030adb1>] ? nfs_flush_one+0xb1/0xf0 > [<ffffffff80309642>] nfs_writepages+0xa2/0xf0 > [<ffffffff8030ad00>] ? nfs_flush_one+0x0/0xf0 > [<ffffffff80272998>] do_writepages+0x28/0x50 > [<ffffffff802b410b>] __writeback_single_inode+0x9b/0x470 > [<ffffffff8022a4e0>] ? update_curr+0xd0/0x120 > [<ffffffff8022e658>] ? dequeue_entity+0x18/0x190 > [<ffffffff802b4ac0>] generic_sync_sb_inodes+0x3a0/0x4d0 > [<ffffffff802b4dae>] writeback_inodes+0x4e/0xf0 > [<ffffffff80272b34>] wb_kupdate+0xa4/0x130 > [<ffffffff802736be>] pdflush+0x10e/0x1f0 > [<ffffffff80272a90>] ? wb_kupdate+0x0/0x130 > [<ffffffff802735b0>] ? pdflush+0x0/0x1f0 > [<ffffffff8024ba79>] kthread+0x49/0x90 > [<ffffffff8020d1b9>] child_rip+0xa/0x11 > [<ffffffff8024ba30>] ? kthread+0x0/0x90 > [<ffffffff8020d1af>] ? child_rip+0x0/0x11 > Code: b4 00 00 00 31 db 48 83 c4 08 89 d8 5b 41 5c 41 5d 41 5e 41 5f c9 c3 > 0f 1f 44 00 00 41 f6 44 24 40 02 74 0b 41 fe 87 b4 00 00 00 <0f> 0b eb fe > 4c 89 f7 e8 2d 8c f6 ff 85 c0 75 72 49 8b 46 18 ba > RIP [<ffffffff80309107>] nfs_do_writepage+0x107/0x1a0 > RSP <ffff88043e0f7b10> > ---[ end trace 4fac3d44a611662b ]--- > }}} Would this be occurring when you're doing mmap() writes? If so I might have an idea about what's wrong. Cheers Trond -- To unsubscribe from this list: send the line "unsubscribe linux-nfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html