I'm getting a series of kernel WARNING messages when testing Josef's
btrfs-next and Chris' next branch running xfstests 083 when mounted
with compress-force=lzo.
I'm not seeing any other indications of problems other than the
WARNINGs on xfstests 083, so this may be some sort of false positive.
Here are the messages against Chris' -next branch (the same warnings
are being generated against josef's branch, except against a 3.7.x
kernel):
[ 553.194991] ------------[ cut here ]------------
[ 553.195002] WARNING: at fs/btrfs/inode.c:7908
btrfs_destroy_inode+0x67/0x25b [btrfs]()
[ 553.195043] Hardware name: OptiPlex 745
[ 553.195046] Modules linked in: ipv6 snd_hda_codec_analog
snd_hda_intel snd_hda_codec snd_hwdep ppdev parport_pc snd_pcm
snd_page_alloc snd_timer snd floppy sr_mod i2c_i801 tg3 ptp iTCO_wdt
pps_core iTCO_vendor_support ehci_pci parport lpc_ich microcode
serio_raw pcspkr ablk_helper cryptd lrw xts gf128mul aes_x86_64
sha256_generic fuse xfs nfs lockd sunrpc reiserfs btrfs zlib_deflate
ext4 jbd2 ext3 jbd ext2 mbcache sl811_hcd hid_generic xhci_hcd
ohci_hcd uhci_hcd ehci_hcd
[ 553.195099] Pid: 4674, comm: rm Not tainted 3.8.0-mason-next+ #1
[ 553.195102] Call Trace:
[ 553.195112] [<ffffffff81030522>] warn_slowpath_common+0x83/0x9b
[ 553.195118] [<ffffffff81030554>] warn_slowpath_null+0x1a/0x1c
[ 553.195135] [<ffffffffa018d69e>] btrfs_destroy_inode+0x67/0x25b [btrfs]
[ 553.195141] [<ffffffff8111759a>] destroy_inode+0x3b/0x54
[ 553.195145] [<ffffffff811176fc>] evict+0x149/0x151
[ 553.195149] [<ffffffff81117f82>] iput+0x12c/0x135
[ 553.195166] [<ffffffffa0187f42>] ? btrfs_unlink_inode+0x38/0x40 [btrfs]
[ 553.195171] [<ffffffff8110de10>] do_unlinkat+0x145/0x1df
[ 553.195177] [<ffffffff81106e9f>] ? sys_newfstatat+0x2a/0x33
[ 553.195191] [<ffffffff8110fce5>] sys_unlinkat+0x29/0x2b
[ 553.195212] [<ffffffff81607746>] system_call_fastpath+0x1a/0x1f
[ 553.195224] ---[ end trace 0adc4db1ad1a6634 ]---
[ 553.195231] ------------[ cut here ]------------
[ 553.195247] WARNING: at fs/btrfs/inode.c:7909
btrfs_destroy_inode+0x7e/0x25b [btrfs]()
[ 553.195249] Hardware name: OptiPlex 745
[ 553.195251] Modules linked in: ipv6 snd_hda_codec_analog
snd_hda_intel snd_hda_codec snd_hwdep ppdev parport_pc snd_pcm
snd_page_alloc snd_timer snd floppy sr_mod i2c_i801 tg3 ptp iTCO_wdt
pps_core iTCO_vendor_support ehci_pci parport lpc_ich microcode
serio_raw pcspkr ablk_helper cryptd lrw xts gf128mul aes_x86_64
sha256_generic fuse xfs nfs lockd sunrpc reiserfs btrfs zlib_deflate
ext4 jbd2 ext3 jbd ext2 mbcache sl811_hcd hid_generic xhci_hcd
ohci_hcd uhci_hcd ehci_hcd
[ 553.195296] Pid: 4674, comm: rm Tainted: G W 3.8.0-mason-next+ #1
[ 553.195298] Call Trace:
[ 553.195304] [<ffffffff81030522>] warn_slowpath_common+0x83/0x9b
[ 553.195308] [<ffffffff81030554>] warn_slowpath_null+0x1a/0x1c
[ 553.195324] [<ffffffffa018d6b5>] btrfs_destroy_inode+0x7e/0x25b [btrfs]
[ 553.195329] [<ffffffff8111759a>] destroy_inode+0x3b/0x54
[ 553.195333] [<ffffffff811176fc>] evict+0x149/0x151
[ 553.195336] [<ffffffff81117f82>] iput+0x12c/0x135
[ 553.195352] [<ffffffffa0187f42>] ? btrfs_unlink_inode+0x38/0x40 [btrfs]
[ 553.195356] [<ffffffff8110de10>] do_unlinkat+0x145/0x1df
[ 553.195360] [<ffffffff81106e9f>] ? sys_newfstatat+0x2a/0x33
[ 553.195364] [<ffffffff8110fce5>] sys_unlinkat+0x29/0x2b
[ 553.195368] [<ffffffff81607746>] system_call_fastpath+0x1a/0x1f
[ 553.195371] ---[ end trace 0adc4db1ad1a6635 ]---
[ 553.195373] ------------[ cut here ]------------
[ 553.195389] WARNING: at fs/btrfs/inode.c:7911
btrfs_destroy_inode+0xae/0x25b [btrfs]()
[ 553.195391] Hardware name: OptiPlex 745
[ 553.195393] Modules linked in: ipv6 snd_hda_codec_analog
snd_hda_intel snd_hda_codec snd_hwdep ppdev parport_pc snd_pcm
snd_page_alloc snd_timer snd floppy sr_mod i2c_i801 tg3 ptp iTCO_wdt
pps_core iTCO_vendor_support ehci_pci parport lpc_ich microcode
serio_raw pcspkr ablk_helper cryptd lrw xts gf128mul aes_x86_64
sha256_generic fuse xfs nfs lockd sunrpc reiserfs btrfs zlib_deflate
ext4 jbd2 ext3 jbd ext2 mbcache sl811_hcd hid_generic xhci_hcd
ohci_hcd uhci_hcd ehci_hcd
[ 553.195437] Pid: 4674, comm: rm Tainted: G W 3.8.0-mason-next+ #1
[ 553.195439] Call Trace:
[ 553.195444] [<ffffffff81030522>] warn_slowpath_common+0x83/0x9b
[ 553.195449] [<ffffffff81030554>] warn_slowpath_null+0x1a/0x1c
[ 553.195463] [<ffffffffa018d6e5>] btrfs_destroy_inode+0xae/0x25b [btrfs]
[ 553.195470] [<ffffffff8111759a>] destroy_inode+0x3b/0x54
[ 553.195474] [<ffffffff811176fc>] evict+0x149/0x151
[ 553.195480] [<ffffffff81117f82>] iput+0x12c/0x135
[ 553.195495] [<ffffffffa0187f42>] ? btrfs_unlink_inode+0x38/0x40 [btrfs]
[ 553.195499] [<ffffffff8110de10>] do_unlinkat+0x145/0x1df
[ 553.195504] [<ffffffff81106e9f>] ? sys_newfstatat+0x2a/0x33
[ 553.195508] [<ffffffff8110fce5>] sys_unlinkat+0x29/0x2b
[ 553.195512] [<ffffffff81607746>] system_call_fastpath+0x1a/0x1f
[ 553.195515] ---[ end trace 0adc4db1ad1a6636 ]---
[ 553.404031] ------------[ cut here ]------------
[ 553.404068] WARNING: at fs/btrfs/extent-tree.c:4510
btrfs_free_block_groups+0x13d/0x27e [btrfs]()
[ 553.404072] Hardware name: OptiPlex 745
[ 553.404076] Modules linked in: ipv6 snd_hda_codec_analog
snd_hda_intel snd_hda_codec snd_hwdep ppdev parport_pc snd_pcm
snd_page_alloc snd_timer snd floppy sr_mod i2c_i801 tg3 ptp iTCO_wdt
pps_core iTCO_vendor_support ehci_pci parport lpc_ich microcode
serio_raw pcspkr ablk_helper cryptd lrw xts gf128mul aes_x86_64
sha256_generic fuse xfs nfs lockd sunrpc reiserfs btrfs zlib_deflate
ext4 jbd2 ext3 jbd ext2 mbcache sl811_hcd hid_generic xhci_hcd
ohci_hcd uhci_hcd ehci_hcd
[ 553.404146] Pid: 4704, comm: umount Tainted: G W
3.8.0-mason-next+ #1
[ 553.404149] Call Trace:
[ 553.404162] [<ffffffff81030522>] warn_slowpath_common+0x83/0x9b
[ 553.404169] [<ffffffff81030554>] warn_slowpath_null+0x1a/0x1c
[ 553.404188] [<ffffffffa017159d>] btrfs_free_block_groups+0x13d/0x27e [btrfs]
[ 553.404211] [<ffffffffa017c71a>] close_ctree+0x200/0x32f [btrfs]
[ 553.404218] [<ffffffff81118323>] ? evict_inodes+0xd7/0xe3
[ 553.404235] [<ffffffffa015a357>] btrfs_put_super+0x19/0x1b [btrfs]
[ 553.404242] [<ffffffff811047e7>] generic_shutdown_super+0x59/0xd1
[ 553.404248] [<ffffffff8111ad7a>] ? free_vfsmnt+0x17/0x3e
[ 553.404255] [<ffffffff811048dd>] kill_anon_super+0x14/0x1f
[ 553.404270] [<ffffffffa015a132>] btrfs_kill_super+0x17/0x89 [btrfs]
[ 553.404276] [<ffffffff81104a44>] deactivate_locked_super+0x37/0x63
[ 553.404282] [<ffffffff8110576a>] deactivate_super+0x3f/0x43
[ 553.404289] [<ffffffff8111b30c>] mntput_no_expire+0x113/0x11b
[ 553.404295] [<ffffffff8111c18b>] sys_umount+0x30a/0x33c
[ 553.404301] [<ffffffff810415d1>] ? __set_current_blocked+0x36/0x4a
[ 553.404310] [<ffffffff81607746>] system_call_fastpath+0x1a/0x1f
[ 553.404314] ---[ end trace 0adc4db1ad1a6637 ]---
[ 553.404317] ------------[ cut here ]------------
[ 553.404336] WARNING: at fs/btrfs/extent-tree.c:4511
btrfs_free_block_groups+0x158/0x27e [btrfs]()
[ 553.404339] Hardware name: OptiPlex 745
[ 553.404342] Modules linked in: ipv6 snd_hda_codec_analog
snd_hda_intel snd_hda_codec snd_hwdep ppdev parport_pc snd_pcm
snd_page_alloc snd_timer snd floppy sr_mod i2c_i801 tg3 ptp iTCO_wdt
pps_core iTCO_vendor_support ehci_pci parport lpc_ich microcode
serio_raw pcspkr ablk_helper cryptd lrw xts gf128mul aes_x86_64
sha256_generic fuse xfs nfs lockd sunrpc reiserfs btrfs zlib_deflate
ext4 jbd2 ext3 jbd ext2 mbcache sl811_hcd hid_generic xhci_hcd
ohci_hcd uhci_hcd ehci_hcd
[ 553.404406] Pid: 4704, comm: umount Tainted: G W
3.8.0-mason-next+ #1
[ 553.404409] Call Trace:
[ 553.404416] [<ffffffff81030522>] warn_slowpath_common+0x83/0x9b
[ 553.404422] [<ffffffff81030554>] warn_slowpath_null+0x1a/0x1c
[ 553.404441] [<ffffffffa01715b8>] btrfs_free_block_groups+0x158/0x27e [btrfs]
[ 553.404463] [<ffffffffa017c71a>] close_ctree+0x200/0x32f [btrfs]
[ 553.404469] [<ffffffff81118323>] ? evict_inodes+0xd7/0xe3
[ 553.404485] [<ffffffffa015a357>] btrfs_put_super+0x19/0x1b [btrfs]
[ 553.404491] [<ffffffff811047e7>] generic_shutdown_super+0x59/0xd1
[ 553.404497] [<ffffffff8111ad7a>] ? free_vfsmnt+0x17/0x3e
[ 553.404504] [<ffffffff811048dd>] kill_anon_super+0x14/0x1f
[ 553.404519] [<ffffffffa015a132>] btrfs_kill_super+0x17/0x89 [btrfs]
[ 553.404525] [<ffffffff81104a44>] deactivate_locked_super+0x37/0x63
[ 553.404531] [<ffffffff8110576a>] deactivate_super+0x3f/0x43
[ 553.404537] [<ffffffff8111b30c>] mntput_no_expire+0x113/0x11b
[ 553.404543] [<ffffffff8111c18b>] sys_umount+0x30a/0x33c
[ 553.404548] [<ffffffff810415d1>] ? __set_current_blocked+0x36/0x4a
[ 553.404555] [<ffffffff81607746>] system_call_fastpath+0x1a/0x1f
[ 553.404559] ---[ end trace 0adc4db1ad1a6638 ]---
Xfstest 083 is showing a successful completion, and I'm not seeing any
errors using btrfsck on the partitions after the test.
For reference, here are the relevant sections of inode.c and extent-tree.c:
inode.c:
7901 void btrfs_destroy_inode(struct inode *inode)
7902 {
7903 struct btrfs_ordered_extent *ordered;
7904 struct btrfs_root *root = BTRFS_I(inode)->root;
7905
7906 WARN_ON(!hlist_empty(&inode->i_dentry));
7907 WARN_ON(inode->i_data.nrpages);
7908 WARN_ON(BTRFS_I(inode)->outstanding_extents);
7909 WARN_ON(BTRFS_I(inode)->reserved_extents);
7910 WARN_ON(BTRFS_I(inode)->delalloc_bytes);
7911 WARN_ON(BTRFS_I(inode)->csum_bytes);
extent-tree.c:
4506 static void release_global_block_rsv(struct btrfs_fs_info *fs_info)
4507 {
4508 block_rsv_release_bytes(fs_info, &fs_info->global_block_rsv, NULL,
4509 (u64)-1);
4510 WARN_ON(fs_info->delalloc_block_rsv.size > 0);
4511 WARN_ON(fs_info->delalloc_block_rsv.reserved > 0);
4512 WARN_ON(fs_info->trans_block_rsv.size > 0);
4513 WARN_ON(fs_info->trans_block_rsv.reserved > 0);
4514 WARN_ON(fs_info->chunk_block_rsv.size > 0);
4515 WARN_ON(fs_info->chunk_block_rsv.reserved > 0);
4516 WARN_ON(fs_info->delayed_block_rsv.size > 0);
4517 WARN_ON(fs_info->delayed_block_rsv.reserved > 0);
4518 }
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