On Saturday 06 January 2007 11:02, Jens Axboe wrote:
> On Sat, Jan 06 2007, Torsten Kaiser wrote:
> > On Saturday 06 January 2007 04:59, Andrew Morton wrote:
> > > http://userweb.kernel.org/~akpm/2.6.20-rc3-mm1x.bz2 is basically
> > > 2.6.20-rc3-mm1, minus git-block.patch. Can you and Torsten please
> > > test that, see if the hangs go away?
> >
> > Works for me too.
>
> Torsten, can you test XFS with barriers disabled? I have a feeling that
> is where the problem lies.
With your patch from Bug 7775: Same hang detected by NMI watchdog
Pure rc3-mm1: Now triggers also the NMI watchdog:
[ 34.942639] ACPI: (supports<6>Time: tsc clocksource has been installed.
[ 34.962607] Clock event device lapic disabled
[ 34.975717] Clock event device pit configured with caps set: 08
[ 34.993526] Switched to high resolution mode on CPU 0
[ 35.008720] Time: pit clocksource has been installed.
[ 35.028823] S0 S1 S4 S5)
[ 35.052336] XFS mounting filesystem sdb6
[ 40.940722] BUG: NMI Watchdog detected LOCKUP on CPU0, eip c0109ce5,
registers:
[ 40.962737] Modules linked in:
[ 40.971991] CPU: 0
[ 40.971992] EIP: 0060:[<c0109ce5>] Not tainted VLI
[ 40.971995] EFLAGS: 00000046 (2.6.20-rc3-mm1 #3)
[ 41.009208] EIP is at pit_read+0x25/0xa0
[ 41.021008] eax: 00000005 ebx: 00000052 ecx: 00000000 edx:
00000082
[ 41.041376] esi: 0009ba52 edi: 3922e0ca ebp: 0004fc3a esp:
dff839e0
[ 41.061742] ds: 007b es: 007b fs: 00d8 gs: 0000 ss: 0068
[ 41.079253] Process swapper (pid: 1, ti=dff82000 task=dff81510
task.ti=dff82000)
[ 41.100915] Stack: 0004fc3a dff83a10 c01244c1 dff83a10 0004fc3a dff83a10
3922e0ca dff83ad8
[ 41.126659] c0133081 00000000 dff83a30 c01330c6 459fa082 139adb41
c052f080 80a5e194
[ 41.152378] c013344f 00000001 c052f130 c052f130 00000002 00000612
c052f130 80a5e194
[ 41.178099] Call Trace:
[ 41.186077] [<c01244c1>] getnstimeofday+0x31/0xc0
[ 41.200569] [<c0133081>] ktime_get_ts+0x11/0x40
[ 41.214521] [<c01330c6>] ktime_get+0x16/0x40
[ 41.227692] [<c013344f>] hrtimer_sched_tick+0x2f/0xd0
[ 41.243199] [<c0133a58>] hrtimer_interrupt+0x148/0x1e0
[ 41.258969] [<c010744f>] timer_interrupt+0x2f/0x40
[ 41.273698] [<c0143c60>] handle_IRQ_event+0x20/0x50
[ 41.288689] [<c0145391>] handle_level_irq+0x81/0x110
[ 41.303937] [<c01067f6>] do_IRQ+0x46/0x80
[ 41.316329] [<c011c4b1>] vprintk+0x201/0x2f0
[ 41.329501] [<c0104a96>] common_interrupt+0x2e/0x34
[ 41.344490] [<c023a88d>] cmn_err+0x9d/0xb0
[ 41.357143] [<c04202b7>] _spin_unlock_irqrestore+0x47/0x60
[ 41.373976] [<c023a88d>] cmn_err+0x9d/0xb0
[ 41.386627] [<c0218218>] xfs_log_mount+0x48/0x5d0
[ 41.401098] [<c021fbbd>] xfs_mountfs+0xb1d/0xfa0
[ 41.415306] [<c041fe09>] _spin_lock+0x29/0x40
[ 41.428737] [<c0231e93>] xfs_setsize_buftarg_flags+0x33/0xc0
[ 41.446066] [<c0227391>] xfs_mount+0x641/0x9c0
[ 41.459758] [<c0226d50>] xfs_mount+0x0/0x9c0
[ 41.472928] [<c0239e92>] vfs_mount+0x22/0x30
[ 41.486099] [<c0239cb8>] xfs_fs_fill_super+0x78/0x1e0
[ 41.501608] [<c025cf0f>] snprintf+0x1f/0x30
[ 41.514518] [<c01a2222>] disk_name+0x92/0xc0
[ 41.527689] [<c0169bd4>] get_sb_bdev+0x104/0x140
[ 41.541900] [<c0238ed0>] xfs_fs_get_sb+0x20/0x30
[ 41.556109] [<c0239c40>] xfs_fs_fill_super+0x0/0x1e0
[ 41.572189] [<c0169696>] vfs_kern_mount+0xb6/0x130
[ 41.586920] [<c0169769>] do_kern_mount+0x39/0x60
[ 41.601130] [<c017ec5c>] do_mount+0x42c/0x700
[ 41.614560] [<c041fd34>] _spin_unlock+0x14/0x20
[ 41.628513] [<c02585c6>] _atomic_dec_and_lock+0x16/0x60
[ 41.644540] [<c02585e1>] _atomic_dec_and_lock+0x31/0x60
[ 41.660573] [<c014c27a>] __get_free_pages+0x1a/0x40
[ 41.675584] [<c017d4d0>] copy_mount_options+0x40/0x150
[ 41.691354] [<c017efa2>] sys_mount+0x72/0xb0
[ 41.704524] [<c0576e9e>] mount_block_root+0x8e/0x270
[ 41.719774] [<c0171d57>] sys_mknod+0x27/0x30
[ 41.732946] [<c05770d0>] mount_root+0x50/0x90
[ 41.746376] [<c0577222>] prepare_namespace+0x112/0x150
[ 41.762145] [<c016658f>] sys_access+0x1f/0x30
[ 41.775577] [<c0576842>] init+0x132/0x1a0
[ 41.787966] [<c0576710>] init+0x0/0x1a0
[ 41.799840] [<c0576710>] init+0x0/0x1a0
[ 41.811711] [<c0104c2f>] kernel_thread_helper+0x7/0x18
[ 41.827481] =======================
[ 41.838235] Code: 31 00 8d 74 26 00 56 b8 e0 b7 52 c0 53 e8 b4 64 31 00
8b 35 20 e0 52 c0 89 c2 31 c0 e6 43 e6 80 e4 40 e6 80 0f b6 d8 e4 40 e6 80
<0f> b6 c0 c1 e0 08 09 c3 81 fb 9c 2e 00 00 7e 1
[ 41.899752] [ 41.903993]
I used the following kernel commandline:
root=/dev/sdb6 console=ttyS0,38400 console=tty1 lapic rootflags=nobarrier
I also added nobarrier to the fstab entry for my root.
Just to mention it: My system does not use any RAID devices, not even the
drivers are getting complied.
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