Hi,
while testing a branch that''ll become the next pull or so,
I''ve hit $subj crash.
(top commit: Chris Mason [cmason/next] Btrfs: uninit variable fixes in
send/receive)
# btrfs fi df /mnt/sdc
Data: total=34.01GB, used=26.53GB
System, DUP: total=8.00MB, used=12.00KB
System: total=4.00MB, used=0.00
Metadata, DUP: total=8.00GB, used=5.76GB
Metadata: total=8.00MB, used=0.00
# btrfs fi show
Label: none uuid: 8d2b2e7f-0a7f-4ace-a265-3d6b48c95ace
Total devices 1 FS bytes used 32.30GB
devid 1 size 55.89GB used 50.04GB path /dev/sdc
# mount
/dev/sdc on /mnt/sdc type btrfs
(rw,relatime,compress-force=lzo,space_cache,autodefrag,inode_cache)
There was an overnight snapshot stress test, running simultaneously:
* untar wikipedia dump (250G) to DIR
* rm DIR (looped)
* snapshot creation
* snapshot deletion
survived; there was one warning
------------[ cut here ]------------
WARNING: at fs/btrfs/inode.c:2440 btrfs_orphan_cleanup+0xb6/0x450 [btrfs]()
Hardware name: Santa Rosa platform
Modules linked in: btrfs aoe loop
Pid: 771, comm: btrfs Not tainted 3.5.0-default+ #163
Call Trace:
[<ffffffff8104243f>] warn_slowpath_common+0x7f/0xc0
[<ffffffff8104249a>] warn_slowpath_null+0x1a/0x20
[<ffffffffa00577b6>] btrfs_orphan_cleanup+0xb6/0x450 [btrfs]
[<ffffffff8136989e>] ? do_raw_spin_unlock+0x5e/0xb0
[<ffffffffa00787b7>] btrfs_mksubvol+0x2d7/0x350 [btrfs]
[<ffffffffa007892a>] btrfs_ioctl_snap_create_transid+0xfa/0x190 [btrfs]
[<ffffffff8111f65c>] ? might_fault+0x9c/0xb0
[<ffffffff8111f613>] ? might_fault+0x53/0xb0
[<ffffffffa0078b46>] btrfs_ioctl_snap_create_v2+0x106/0x140 [btrfs]
[<ffffffffa007a868>] btrfs_ioctl+0x558/0x19d0 [btrfs]
[<ffffffff8106e0f3>] ? up_read+0x23/0x40
[<ffffffff818d4080>] ? do_page_fault+0x2d0/0x580
[<ffffffff81187b1d>] ? fsnotify+0x8d/0x330
[<ffffffff8115a238>] do_vfs_ioctl+0x98/0x560
[<ffffffff81099de9>] ? trace_hardirqs_off_caller+0x29/0xc0
[<ffffffff818d0395>] ? retint_swapgs+0x13/0x1b
[<ffffffff8115a74f>] sys_ioctl+0x4f/0x80
[<ffffffff818d8869>] system_call_fastpath+0x16/0x1b
---[ end trace 2aefcc77a6ab3bf5 ]---
btrfs: Error removing orphan entry, stopping orphan cleanup
btrfs: could not do orphan cleanup -22
--
some hours later, I stopped the stress load, deleted a few snapshots manually,
current count is 50+. Started scrub, started balance, cancelled scrub (ok), left
balance run.
syslog messages from balance:
[132057.002633] btrfs: relocating block group 44052774912 flags 1
[132057.824512] btrfs: relocating block group 42979033088 flags 1
[132058.849141] btrfs: relocating block group 41905291264 flags 1
[132059.582795] btrfs: relocating block group 40831549440 flags 1
[132060.272957] btrfs: relocating block group 39757807616 flags 1
[132060.983105] btrfs: relocating block group 38684065792 flags 36
After minutes, there were lots of messages followed by a crash:
[133083.028677] btrfs: block rsv returned -28
[133083.028678] ------------[ cut here ]------------
[133083.028688] WARNING: at fs/btrfs/extent-tree.c:6330
btrfs_alloc_free_block+0x367/0x380 [btrfs]()
[133083.028689] Hardware name: Santa Rosa platform
[133083.028694] Pid: 12650, comm: btrfs Tainted: G W 3.5.0-default+
#163
[133083.028694] Call Trace:
[133083.028695] [<ffffffff8104243f>] warn_slowpath_common+0x7f/0xc0
[133083.028698] [<ffffffff8104249a>] warn_slowpath_null+0x1a/0x20
[133083.028700] [<ffffffffa003a977>] btrfs_alloc_free_block+0x367/0x380
[btrfs]
[133083.028710] [<ffffffffa0069cf3>] ? read_extent_buffer+0xd3/0x130
[btrfs]
[133083.028723] [<ffffffffa007c231>] ? btrfs_tree_lock+0x131/0x290
[btrfs]
[133083.028737] [<ffffffffa00251c4>] __btrfs_cow_block+0x134/0x560
[btrfs]
[133083.028745] [<ffffffffa00256fa>] btrfs_cow_block+0x10a/0x220 [btrfs]
[133083.028753] [<ffffffffa008e37f>] do_relocation+0x49f/0x590 [btrfs]
[133083.028767] [<ffffffffa002e629>] ? block_rsv_add_bytes+0x59/0x80
[btrfs]
[133083.028776] [<ffffffffa00921fe>] relocate_tree_blocks+0x48e/0x690
[btrfs]
[133083.028789] [<ffffffffa008c3a4>] ? tree_insert+0x54/0x60 [btrfs]
[133083.028802] [<ffffffffa0090082>] ? add_tree_block+0xe2/0x180 [btrfs]
[133083.028815] [<ffffffffa009327b>] relocate_block_group+0x1cb/0x630
[btrfs]
[133083.028828] [<ffffffffa0093890>]
btrfs_relocate_block_group+0x1b0/0x2e0 [btrfs]
[133083.028841] [<ffffffffa006c497>] btrfs_relocate_chunk+0x87/0x750
[btrfs]
[133083.028854] [<ffffffffa0068aaf>] ? free_extent_buffer+0x1f/0x90
[btrfs]
[133083.028868] [<ffffffff8136989e>] ? do_raw_spin_unlock+0x5e/0xb0
[133083.028870] [<ffffffff818cfb8b>] ? _raw_spin_unlock+0x2b/0x50
[133083.028873] [<ffffffffa0062b19>] ? release_extent_buffer+0xb9/0xe0
[btrfs]
[133083.028886] [<ffffffffa0068aaf>] ? free_extent_buffer+0x1f/0x90
[btrfs]
[133083.028899] [<ffffffffa0068acc>] ? free_extent_buffer+0x3c/0x90
[btrfs]
[133083.028912] [<ffffffffa0070ab2>] btrfs_balance+0x812/0xcb0 [btrfs]
[133083.028926] [<ffffffffa0078cb4>] btrfs_ioctl_balance+0x134/0x260
[btrfs]
[133083.028939] [<ffffffffa007ab54>] btrfs_ioctl+0x844/0x19d0 [btrfs]
[133083.028952] [<ffffffff8106e0f3>] ? up_read+0x23/0x40
[133083.028954] [<ffffffff818d4080>] ? do_page_fault+0x2d0/0x580
[133083.028957] [<ffffffff8115a238>] do_vfs_ioctl+0x98/0x560
[133083.028959] [<ffffffff81099de9>] ?
trace_hardirqs_off_caller+0x29/0xc0
[133083.028962] [<ffffffff818d0395>] ? retint_swapgs+0x13/0x1b
[133083.028965] [<ffffffff8115a74f>] sys_ioctl+0x4f/0x80
[133083.028967] [<ffffffff818d8869>] system_call_fastpath+0x16/0x1b
[133083.028970] ---[ end trace 2aefcc77a6ab3c93 ]---
and the crash came in a quick sequence after the last one:
133088.565484] ------------[ cut here ]------------
[133088.569072] kernel BUG at fs/btrfs/relocation.c:2331!
[133088.569072] invalid opcode: 0000 [#1] SMP
[133088.569072] CPU 1
[133088.569072] Modules linked in:[133088.569072] btrfs aoe loop
[133088.569072] Pid: 12650, comm: btrfs Tainted: G W 3.5.0-default+
#163 Intel Corporation Santa Rosa platform/Matanzas
[133088.569072] RIP: 0010:[<ffffffffa008d4c8>] [<ffffffffa008d4c8>]
select_reloc_root+0x1d8/0x1f0 [btrfs]
[133088.569072] RSP: 0018:ffff8800174b9898 EFLAGS: 00010246
[133088.569072] RAX: ffff8800457b92a8 RBX: ffff8800152df478 RCX:
ffff8800457b92e8
[133088.569072] RDX: ffff8800457b92a8 RSI: ffff8800174b9948 RDI:
0000000000000000
[133088.569072] RBP: ffff8800174b98e8 R08: ffff8800457b92e8 R09:
ffff8800044f9338
[133088.569072] R10: 09f911029d74e35b R11: 0000000000000000 R12:
ffff8800457b92a8
[133088.569072] R13: ffff88001e3e28b8 R14: ffff8800174b9948 R15:
0000000000000000
[133088.569072] FS: 00007fe134440740(0000) GS:ffff88007de00000(0000)
knlGS:0000000000000000
[133088.569072] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b
[133088.569072] CR2: 00007f6dc37ff000 CR3: 00000000512ec000 CR4:
00000000000007e0
[133088.569072] DR0: 0000000000000000 DR1: 0000000000000000 DR2:
0000000000000000
[133088.569072] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7:
0000000000000400
[133088.569072] Process btrfs (pid: 12650, threadinfo ffff8800174b8000, task
ffff88004afe1300)
[133088.569072] Stack:
[133088.569072] ffff880000000000 ffff8800174b9994 0000160000000000
000000001fc4c740
[133088.569072] ffff880000000000 ffff8800457b92a8 ffff880078391430
0000000000000000
[133088.569072] ffff880017a029d8 0000000901e5f000 ffff8800174b99c8
ffffffffa008e15d
[133088.569072] Call Trace:
[133088.569072] [<ffffffffa008e15d>] do_relocation+0x27d/0x590 [btrfs]
[133088.569072] [<ffffffffa002e629>] ? block_rsv_add_bytes+0x59/0x80
[btrfs]
[133088.569072] [<ffffffffa00921fe>] relocate_tree_blocks+0x48e/0x690
[btrfs]
[133088.569072] [<ffffffffa008c3a4>] ? tree_insert+0x54/0x60 [btrfs]
[133088.569072] [<ffffffffa0090082>] ? add_tree_block+0xe2/0x180 [btrfs]
[133088.569072] [<ffffffffa009327b>] relocate_block_group+0x1cb/0x630
[btrfs]
[133088.569072] [<ffffffffa0093890>]
btrfs_relocate_block_group+0x1b0/0x2e0 [btrfs]
[133088.569072] [<ffffffffa006c497>] btrfs_relocate_chunk+0x87/0x750
[btrfs]
[133088.569072] [<ffffffffa0068aaf>] ? free_extent_buffer+0x1f/0x90
[btrfs]
[133088.569072] [<ffffffff8136989e>] ? do_raw_spin_unlock+0x5e/0xb0
[133088.569072] [<ffffffff818cfb8b>] ? _raw_spin_unlock+0x2b/0x50
[133088.569072] [<ffffffffa0062b19>] ? release_extent_buffer+0xb9/0xe0
[btrfs]
[133088.569072] [<ffffffffa0068aaf>] ? free_extent_buffer+0x1f/0x90
[btrfs]
[133088.569072] [<ffffffffa0068acc>] ? free_extent_buffer+0x3c/0x90
[btrfs]
[133088.569072] [<ffffffffa0070ab2>] btrfs_balance+0x812/0xcb0 [btrfs]
[133088.569072] [<ffffffffa0078cb4>] btrfs_ioctl_balance+0x134/0x260
[btrfs]
[133088.569072] [<ffffffffa007ab54>] btrfs_ioctl+0x844/0x19d0 [btrfs]
[133088.569072] [<ffffffff8106e0f3>] ? up_read+0x23/0x40
[133088.569072] [<ffffffff818d4080>] ? do_page_fault+0x2d0/0x580
[133088.569072] [<ffffffff8115a238>] do_vfs_ioctl+0x98/0x560
[133088.569072] [<ffffffff81099de9>] ?
trace_hardirqs_off_caller+0x29/0xc0
[133088.569072] [<ffffffff818d0395>] ? retint_swapgs+0x13/0x1b
[133088.569072] [<ffffffff8115a74f>] sys_ioctl+0x4f/0x80
[133088.569072] [<ffffffff818d8869>] system_call_fastpath+0x16/0x1b
[133088.569072] Code: 48 89 df 48 89 8b 00 01 00 00 48 89 72 30 48 89 d6 48 89
42 38 48 89 08 e8 26 f2 ff ff 4d 85 ff 0f 85 66 ff ff ff e9 0a ff ff ff
<0f> 0b 0f 0b 0f 0b 0f 0b 0f 0b 0f 0b 66 66 6
[133088.569072] RIP [<ffffffffa008d4c8>] select_reloc_root+0x1d8/0x1f0
[btrfs]
[133088.569072] RSP <ffff8800174b9898>
[133088.973110] ---[ end trace 2aefcc77a6ab3c94 ]---
2316 static noinline_for_stack
2317 struct btrfs_root *select_reloc_root(struct btrfs_trans_handle *trans,
2318 struct reloc_control *rc,
2319 struct backref_node *node,
2320 struct backref_edge *edges[], int *nr)
2321 {
2322 struct backref_node *next;
2323 struct btrfs_root *root;
2324 int index = 0;
2325
2326 next = node;
2327 while (1) {
2328 cond_resched();
2329 next = walk_up_backref(next, edges, &index);
2330 root = next->root;
2331 BUG_ON(!root);
--
To unsubscribe from this list: send the line "unsubscribe linux-btrfs"
in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html