On 11/25/2016 03:07 AM, Christoph Hellwig wrote:
Any chance to get someone look at this or the next bug report?
I've been trying to reproduce, but haven't yet. This test does hit the
CPU hard, which PREEMPT setting are you using?
-chris
On Mon, Nov 14, 2016 at 04:35:29AM -0800, Christoph Hellwig wrote:
btrfs/130 [ 384.645337] run fstests btrfs/130 at 2016-11-14
12:33:26
[ 384.827333] BTRFS: device fsid bf118b00-e2e0-4a96-a177-765789170093 devid 1 transid 3 /dev/vdc
[ 384.851643] BTRFS info (device vdc): disk space caching is enabled
[ 384.852113] BTRFS info (device vdc): flagging fs with big metadata feature
[ 384.857043] BTRFS info (device vdc): creating UUID tree
[ 384.988347] BTRFS: device fsid 3b92b8c1-295d-4099-8623-d71a3cb270f8 devid 1 transid 3 /dev/vdc
[ 385.001946] BTRFS info (device vdc): disk space caching is enabled
[ 385.002846] BTRFS info (device vdc): flagging fs with big metadata
feature
[ 385.008870] BTRFS info (device vdc): creating UUID tree
[ 416.318581] NMI watchdog: BUG: soft lockup - CPU#3 stuck for 22s! [btrfs:12782]
[ 416.319139] Modules linked in:
[ 416.319366] CPU: 3 PID: 12782 Comm: btrfs Not tainted 4.9.0-rc1 #826
[ 416.319789] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.7.5-20140531_083030-gandalf 04/01/2014
[ 416.320466] task: ffff8801355a4140 task.stack: ffffc900000a4000
[ 416.320864] RIP: 0010:[<ffffffff816a197d>] [<ffffffff816a197d>] find_parent_nodes+0xb7d/0x1530
[ 416.321455] RSP: 0018:ffffc900000a79b0 EFLAGS: 00000286
[ 416.321811] RAX: ffff88012de45640 RBX: 0000000000000000 RCX: ffffc900000a7a28
[ 416.322285] RDX: ffff88012de45660 RSI: 0000000001ca8000 RDI: ffff88013b803e40
[ 416.322759] RBP: ffffc900000a7ab0 R08: 0000000002400040 R09: ffff88010077a478
[ 416.323317] R10: ffff880127652f70 R11: ffff880127652f08 R12: ffff880000000000
[ 416.323791] R13: 6db6db6db6db6db7 R14: ffff8801295093b0 R15: 0000000000000000
[ 416.324262] FS: 00007f83ef8398c0(0000) GS:ffff88013fd80000(0000) knlGS:0000000000000000
[ 416.324795] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 416.325176] CR2: 00007f83ee4dbe38 CR3: 0000000136b56000 CR4: 00000000000006e0
[ 416.325649] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 416.326120] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 416.326590] Stack:
[ 416.326730] 0000000000000000 ffff880102400040 ffff88012a340000 0000000000001063
[ 416.327257] 0000000100000001 ffff88012dd0e800 ffff88012a340000 0000000000000001
[ 416.327780] ffff88012a340000 0000000000000000 ffff88013b803e40 0000000000c40000
[ 416.328304] Call Trace:
[ 416.328475] [<ffffffff816afbe0>] ? changed_cb+0xb70/0xb70
[ 416.328841] [<ffffffff816a2eb7>] iterate_extent_inodes+0xe7/0x270
[ 416.329251] [<ffffffff8165ecf6>] ? release_extent_buffer+0x26/0xc0
[ 416.329657] [<ffffffff8165f266>] ? free_extent_buffer+0x46/0x80
[ 416.330068] [<ffffffff816adb8f>] process_extent+0x69f/0xb00
[ 416.330452] [<ffffffff816af33b>] changed_cb+0x2cb/0xb70
[ 416.330811] [<ffffffff8165fa52>] ? read_extent_buffer+0xe2/0x140
[ 416.331380] [<ffffffff81615e82>] ? btrfs_search_slot_for_read+0xc2/0x1b0
[ 416.331905] [<ffffffff816b0ff7>] btrfs_ioctl_send+0x1187/0x12c0
[ 416.332309] [<ffffffff811de83a>] ? kmem_cache_alloc+0x8a/0x160
[ 416.332704] [<ffffffff81675edc>] btrfs_ioctl+0x7dc/0x21f0
[ 416.333071] [<ffffffff8109076c>] ? flat_send_IPI_mask+0xc/0x10
[ 416.333465] [<ffffffff8108cd6d>] ? default_send_IPI_single+0x2d/0x30
[ 416.333893] [<ffffffff81088e87>] ? native_smp_send_reschedule+0x27/0x40
[ 416.334340] [<ffffffff810f1d3d>] ? resched_curr+0xad/0xb0
[ 416.334706] [<ffffffff811f83db>] do_vfs_ioctl+0x8b/0x5b0
[ 416.335065] [<ffffffff810cba02>] ? _do_fork+0x132/0x390
[ 416.335423] [<ffffffff811f893c>] SyS_ioctl+0x3c/0x70
[ 416.335763] [<ffffffff81df2177>] entry_SYSCALL_64_fastpath+0x1a/0xa9
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