* btrfs hang on brd
@ 2011-05-31 7:03 Adrian Hunter
2011-06-01 8:54 ` David Sterba
0 siblings, 1 reply; 6+ messages in thread
From: Adrian Hunter @ 2011-05-31 7:03 UTC (permalink / raw)
To: chris.mason; +Cc: linux-btrfs
Hi
I seem to be able to get btrfs reproducibly to
produce warnings and finally hang when running
a stress test on a ramdisk.
Testing was done using the "integration-test"
branch of btrfs-unstable. Note that I also tested
v2.6.39 and "integration-test" took much longer to
hang i.e. it is an improvement
The test script and stack dumps are below.
Is this a valid test?
Is it worth me investigating these?
Regards
Adrian
Test
----
#!/bin/sh
sudo modprobe brd rd_size=262144
sudo umount /mnt/test/ 2> /dev/null
echo 'mkfs.btrfs /dev/ram0'
sudo mkfs.btrfs /dev/ram0
sudo mkdir -p /mnt/test
echo 'mount -t btrfs /dev/ram0 /mnt/test'
sudo mount -t btrfs /dev/ram0 /mnt/test
sudo mkdir -p /mnt/test/test
sudo chown $USER /mnt/test/test
sudo chgrp $USER /mnt/test/test
sudo umount /mnt/test
full=0
i=0
while true; do
sudo mount -t btrfs /dev/ram0 /mnt/test
if df | grep ram0 | grep 100% > /dev/null; then
full=`expr $full \+ 1`
if test $full -gt 6;then
rm -rf /mnt/test/test/*
full=0
fi
else
full=0
fi
fsstress -c -r -d /mnt/test/test -p 3 -n 1000 -l 10
sudo umount /mnt/test
i=`expr $i \+ 1`
echo $i
done
Stack dumps for warnings
------------------------
[ 7481.520750] WARNING: at fs/btrfs/extent-tree.c:5648
btrfs_alloc_free_block+0x14e/0x357 [btrfs]()
[ 7481.520753] Hardware name: XPS 8300
[ 7481.520754] Modules linked in: tcp_lp tun btrfs zlib_deflate
libcrc32c brd fuse cpufreq_ondemand acpi_cpufreq freq_table mperf
ip6t_REJECT nf_conntrack_ipv6 nf_defrag_ipv6 ip6table_filter ip6_tables
ipv6 uinput snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_intel
snd_hda_codec broadcom tg3 snd_hwdep snd_seq snd_seq_device snd_pcm
joydev pcspkr iTCO_wdt iTCO_vendor_support dcdbas serio_raw i2c_i801
snd_timer snd microcode soundcore snd_page_alloc usb_storage i915
drm_kms_helper drm i2c_algo_bit i2c_core video [last unloaded:
scsi_wait_scan]
[ 7481.520805] Pid: 3980, comm: btrfs-endio-wri Not tainted
2.6.39-integration-test-20110526-01+ #2
[ 7481.520808] Call Trace:
[ 7481.520818] [<ffffffff8104df7a>] warn_slowpath_common+0x85/0x9d
[ 7481.520824] [<ffffffff8104dfac>] warn_slowpath_null+0x1a/0x1c
[ 7481.520838] [<ffffffffa02dfca8>] btrfs_alloc_free_block+0x14e/0x357
[btrfs]
[ 7481.520865] [<ffffffffa030a073>] ?
map_private_extent_buffer+0xb1/0xd5 [btrfs]
[ 7481.520875] [<ffffffffa02d2987>] __btrfs_cow_block+0x102/0x31e [btrfs]
[ 7481.520883] [<ffffffffa02d1300>] ? btrfs_set_item_key+0x3/0x20 [btrfs]
[ 7481.520892] [<ffffffffa02d2ca7>] btrfs_cow_block+0x104/0x14d [btrfs]
[ 7481.520910] [<ffffffffa02d5a87>] btrfs_search_slot+0x162/0x502 [btrfs]
[ 7481.520925] [<ffffffffa02e3e66>] btrfs_lookup_file_extent+0x3c/0x3e
[btrfs]
[ 7481.520936] [<ffffffffa02d2124>] ? btrfs_alloc_path+0x1a/0x2b [btrfs]
[ 7481.520955] [<ffffffffa02f9319>] btrfs_drop_extents+0x10e/0x731 [btrfs]
[ 7481.520960] [<ffffffff8103cc9e>] ? need_resched+0x23/0x2d
[ 7481.520966] [<ffffffff81474da6>] ? _cond_resched+0xe/0x22
[ 7481.520972] [<ffffffff8110d58c>] ?
slab_pre_alloc_hook.clone.32+0x2d/0x31
[ 7481.520977] [<ffffffff8110e0c7>] ? kmem_cache_alloc+0x29/0xf7
[ 7481.521002] [<ffffffffa02f09fa>]
insert_reserved_file_extent.clone.34+0x70/0x1fc [btrfs]
[ 7481.521027] [<ffffffffa03071c9>] ? lock_extent_bits+0x5e/0xa8 [btrfs]
[ 7481.521044] [<ffffffffa02f362c>]
btrfs_endio_direct_write+0x171/0x29a [btrfs]
[ 7481.521060] [<ffffffffa02e6afc>] ? end_workqueue_fn+0xf6/0x10e [btrfs]
[ 7481.521065] [<ffffffff81141934>] bio_endio+0x2d/0x2f
[ 7481.521087] [<ffffffffa02e6b07>] end_workqueue_fn+0x101/0x10e [btrfs]
[ 7481.521101] [<ffffffffa0310951>] worker_loop+0x193/0x4ca [btrfs]
[ 7481.521116] [<ffffffffa03107be>] ? btrfs_queue_worker+0x214/0x214
[btrfs]
[ 7481.521119] [<ffffffff81068dce>] kthread+0x82/0x8a
[ 7481.521124] [<ffffffff8147db64>] kernel_thread_helper+0x4/0x10
[ 7481.521136] [<ffffffff81068d4c>] ? kthread_worker_fn+0x14b/0x14b
[ 7481.521141] [<ffffffff8147db60>] ? gs_change+0x13/0x13
[ 7481.521144] ---[ end trace abb147a5624a0a24 ]---
[ 7481.521161] ------------[ cut here ]------------
[ 7481.521176] WARNING: at fs/btrfs/extent-tree.c:5648
btrfs_alloc_free_block+0x14e/0x357 [btrfs]()
[ 7481.521178] Hardware name: XPS 8300
[ 7481.521180] Modules linked in: tcp_lp tun btrfs zlib_deflate
libcrc32c brd fuse cpufreq_ondemand acpi_cpufreq freq_table mperf
ip6t_REJECT nf_conntrack_ipv6 nf_defrag_ipv6 ip6table_filter ip6_tables
ipv6 uinput snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_intel
snd_hda_codec broadcom tg3 snd_hwdep snd_seq snd_seq_device snd_pcm
joydev pcspkr iTCO_wdt iTCO_vendor_support dcdbas serio_raw i2c_i801
snd_timer snd microcode soundcore snd_page_alloc usb_storage i915
drm_kms_helper drm i2c_algo_bit i2c_core video [last unloaded:
scsi_wait_scan]
[ 7481.521237] Pid: 3980, comm: btrfs-endio-wri Tainted: G W
2.6.39-integration-test-20110526-01+ #2
[ 7481.521240] Call Trace:
[ 7481.521245] [<ffffffff8104df7a>] warn_slowpath_common+0x85/0x9d
[ 7481.521250] [<ffffffff8104dfac>] warn_slowpath_null+0x1a/0x1c
[ 7481.521288] [<ffffffffa02dfca8>] btrfs_alloc_free_block+0x14e/0x357
[btrfs]
[ 7481.521303] [<ffffffffa030a073>] ?
map_private_extent_buffer+0xb1/0xd5 [btrfs]
[ 7481.521313] [<ffffffffa02d2987>] __btrfs_cow_block+0x102/0x31e [btrfs]
[ 7481.521322] [<ffffffffa02d1300>] ? btrfs_set_item_key+0x3/0x20 [btrfs]
[ 7481.521341] [<ffffffffa02d2ca7>] btrfs_cow_block+0x104/0x14d [btrfs]
[ 7481.521353] [<ffffffffa02d5a87>] btrfs_search_slot+0x162/0x502 [btrfs]
[ 7481.521378] [<ffffffffa02e3e66>] btrfs_lookup_file_extent+0x3c/0x3e
[btrfs]
[ 7481.521388] [<ffffffffa02d2124>] ? btrfs_alloc_path+0x1a/0x2b [btrfs]
[ 7481.521405] [<ffffffffa02f9319>] btrfs_drop_extents+0x10e/0x731 [btrfs]
[ 7481.521410] [<ffffffff8103cc9e>] ? need_resched+0x23/0x2d
[ 7481.521415] [<ffffffff81474da6>] ? _cond_resched+0xe/0x22
[ 7481.521420] [<ffffffff8110d58c>] ?
slab_pre_alloc_hook.clone.32+0x2d/0x31
[ 7481.521426] [<ffffffff8110e0c7>] ? kmem_cache_alloc+0x29/0xf7
[ 7481.521441] [<ffffffffa02f09fa>]
insert_reserved_file_extent.clone.34+0x70/0x1fc [btrfs]
[ 7481.521470] [<ffffffffa03071c9>] ? lock_extent_bits+0x5e/0xa8 [btrfs]
[ 7481.521496] [<ffffffffa02f362c>]
btrfs_endio_direct_write+0x171/0x29a [btrfs]
[ 7481.521511] [<ffffffffa02e6afc>] ? end_workqueue_fn+0xf6/0x10e [btrfs]
[ 7481.521516] [<ffffffff81141934>] bio_endio+0x2d/0x2f
[ 7481.521539] [<ffffffffa02e6b07>] end_workqueue_fn+0x101/0x10e [btrfs]
[ 7481.521565] [<ffffffffa0310951>] worker_loop+0x193/0x4ca [btrfs]
[ 7481.521581] [<ffffffffa03107be>] ? btrfs_queue_worker+0x214/0x214
[btrfs]
[ 7481.521586] [<ffffffff81068dce>] kthread+0x82/0x8a
[ 7481.521591] [<ffffffff8147db64>] kernel_thread_helper+0x4/0x10
[ 7481.521596] [<ffffffff81068d4c>] ? kthread_worker_fn+0x14b/0x14b
[ 7481.521601] [<ffffffff8147db60>] ? gs_change+0x13/0x13
[ 7481.521604] ---[ end trace abb147a5624a0a25 ]---
[ 7481.521639] ------------[ cut here ]------------
[ 7481.521654] WARNING: at fs/btrfs/extent-tree.c:5648
btrfs_alloc_free_block+0x14e/0x357 [btrfs]()
[ 7481.521658] Hardware name: XPS 8300
[ 7481.521669] Modules linked in: tcp_lp tun btrfs zlib_deflate
libcrc32c brd fuse cpufreq_ondemand acpi_cpufreq freq_table mperf
ip6t_REJECT nf_conntrack_ipv6 nf_defrag_ipv6 ip6table_filter ip6_tables
ipv6 uinput snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_intel
snd_hda_codec broadcom tg3 snd_hwdep snd_seq snd_seq_device snd_pcm
joydev pcspkr iTCO_wdt iTCO_vendor_support dcdbas serio_raw i2c_i801
snd_timer snd microcode soundcore snd_page_alloc usb_storage i915
drm_kms_helper drm i2c_algo_bit i2c_core video [last unloaded:
scsi_wait_scan]
[ 7481.521736] Pid: 3980, comm: btrfs-endio-wri Tainted: G W
2.6.39-integration-test-20110526-01+ #2
[ 7481.521739] Call Trace:
[ 7481.521745] [<ffffffff8104df7a>] warn_slowpath_common+0x85/0x9d
[ 7481.521750] [<ffffffff8104dfac>] warn_slowpath_null+0x1a/0x1c
[ 7481.521763] [<ffffffffa02dfca8>] btrfs_alloc_free_block+0x14e/0x357
[btrfs]
[ 7481.521773] [<ffffffffa02d127f>] ? btrfs_item_offset_nr+0x19/0x1b
[btrfs]
[ 7481.521783] [<ffffffffa02d1551>] ? leaf_space_used+0x5e/0x86 [btrfs]
[ 7481.521803] [<ffffffffa02d2987>] __btrfs_cow_block+0x102/0x31e [btrfs]
[ 7481.521822] [<ffffffffa0309674>] ?
clear_extent_buffer_dirty+0x131/0x142 [btrfs]
[ 7481.521834] [<ffffffffa02d1500>] ? leaf_space_used+0xd/0x86 [btrfs]
[ 7481.521845] [<ffffffffa02d2ca7>] btrfs_cow_block+0x104/0x14d [btrfs]
[ 7481.521864] [<ffffffffa0314f32>] ? btrfs_spin_on_block+0x55/0x55 [btrfs]
[ 7481.521876] [<ffffffffa02d5a87>] btrfs_search_slot+0x162/0x502 [btrfs]
[ 7481.521889] [<ffffffffa02d6d2d>] btrfs_insert_empty_items+0x6a/0xba
[btrfs]
[ 7481.521895] [<ffffffff8110e0c7>] ? kmem_cache_alloc+0x29/0xf7
[ 7481.521921] [<ffffffffa02f0a37>]
insert_reserved_file_extent.clone.34+0xad/0x1fc [btrfs]
[ 7481.521947] [<ffffffffa03071c9>] ? lock_extent_bits+0x5e/0xa8 [btrfs]
[ 7481.521965] [<ffffffffa02f362c>]
btrfs_endio_direct_write+0x171/0x29a [btrfs]
[ 7481.521989] [<ffffffffa02e6afc>] ? end_workqueue_fn+0xf6/0x10e [btrfs]
[ 7481.521994] [<ffffffff81141934>] bio_endio+0x2d/0x2f
[ 7481.522007] [<ffffffffa02e6b07>] end_workqueue_fn+0x101/0x10e [btrfs]
[ 7481.522034] [<ffffffffa0310951>] worker_loop+0x193/0x4ca [btrfs]
[ 7481.522052] [<ffffffffa03107be>] ? btrfs_queue_worker+0x214/0x214
[btrfs]
[ 7481.522057] [<ffffffff81068dce>] kthread+0x82/0x8a
[ 7481.522071] [<ffffffff8147db64>] kernel_thread_helper+0x4/0x10
[ 7481.522076] [<ffffffff81068d4c>] ? kthread_worker_fn+0x14b/0x14b
[ 7481.522081] [<ffffffff8147db60>] ? gs_change+0x13/0x13
[ 7481.522084] ---[ end trace abb147a5624a0a26 ]---
[ 7481.522108] ------------[ cut here ]------------
[ 7481.522123] WARNING: at fs/btrfs/extent-tree.c:5648
btrfs_alloc_free_block+0x14e/0x357 [btrfs]()
[ 7481.522126] Hardware name: XPS 8300
[ 7481.522128] Modules linked in: tcp_lp tun btrfs zlib_deflate
libcrc32c brd fuse cpufreq_ondemand acpi_cpufreq freq_table mperf
ip6t_REJECT nf_conntrack_ipv6 nf_defrag_ipv6 ip6table_filter ip6_tables
ipv6 uinput snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_intel
snd_hda_codec broadcom tg3 snd_hwdep snd_seq snd_seq_device snd_pcm
joydev pcspkr iTCO_wdt iTCO_vendor_support dcdbas serio_raw i2c_i801
snd_timer snd microcode soundcore snd_page_alloc usb_storage i915
drm_kms_helper drm i2c_algo_bit i2c_core video [last unloaded:
scsi_wait_scan]
[ 7481.522203] Pid: 3980, comm: btrfs-endio-wri Tainted: G W
2.6.39-integration-test-20110526-01+ #2
[ 7481.522206] Call Trace:
[ 7481.522211] [<ffffffff8104df7a>] warn_slowpath_common+0x85/0x9d
[ 7481.522226] [<ffffffff8104dfac>] warn_slowpath_null+0x1a/0x1c
[ 7481.522240] [<ffffffffa02dfca8>] btrfs_alloc_free_block+0x14e/0x357
[btrfs]
[ 7481.522269] [<ffffffffa030a073>] ?
map_private_extent_buffer+0xb1/0xd5 [btrfs]
[ 7481.522283] [<ffffffffa02d2987>] __btrfs_cow_block+0x102/0x31e [btrfs]
[ 7481.522293] [<ffffffffa02d1500>] ? leaf_space_used+0xd/0x86 [btrfs]
[ 7481.522304] [<ffffffffa02d2ca7>] btrfs_cow_block+0x104/0x14d [btrfs]
[ 7481.522315] [<ffffffffa02d5a87>] btrfs_search_slot+0x162/0x502 [btrfs]
[ 7481.522326] [<ffffffffa02d6d2d>] btrfs_insert_empty_items+0x6a/0xba
[btrfs]
[ 7481.522332] [<ffffffff8110e0c7>] ? kmem_cache_alloc+0x29/0xf7
[ 7481.522359] [<ffffffffa02f0a37>]
insert_reserved_file_extent.clone.34+0xad/0x1fc [btrfs]
[ 7481.522385] [<ffffffffa03071c9>] ? lock_extent_bits+0x5e/0xa8 [btrfs]
[ 7481.522401] [<ffffffffa02f362c>]
btrfs_endio_direct_write+0x171/0x29a [btrfs]
[ 7481.522415] [<ffffffffa02e6afc>] ? end_workqueue_fn+0xf6/0x10e [btrfs]
[ 7481.522420] [<ffffffff81141934>] bio_endio+0x2d/0x2f
[ 7481.522433] [<ffffffffa02e6b07>] end_workqueue_fn+0x101/0x10e [btrfs]
[ 7481.522459] [<ffffffffa0310951>] worker_loop+0x193/0x4ca [btrfs]
[ 7481.522477] [<ffffffffa03107be>] ? btrfs_queue_worker+0x214/0x214
[btrfs]
[ 7481.522482] [<ffffffff81068dce>] kthread+0x82/0x8a
[ 7481.522488] [<ffffffff8147db64>] kernel_thread_helper+0x4/0x10
[ 7481.522493] [<ffffffff81068d4c>] ? kthread_worker_fn+0x14b/0x14b
[ 7481.522499] [<ffffffff8147db60>] ? gs_change+0x13/0x13
[ 7481.522502] ---[ end trace abb147a5624a0a27 ]---
[ 7481.522526] ------------[ cut here ]------------
[ 7481.522549] WARNING: at fs/btrfs/extent-tree.c:5648
btrfs_alloc_free_block+0x14e/0x357 [btrfs]()
[ 7481.522552] Hardware name: XPS 8300
[ 7481.522555] Modules linked in: tcp_lp tun btrfs zlib_deflate
libcrc32c brd fuse cpufreq_ondemand acpi_cpufreq freq_table mperf
ip6t_REJECT nf_conntrack_ipv6 nf_defrag_ipv6 ip6table_filter ip6_tables
ipv6 uinput snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_intel
snd_hda_codec broadcom tg3 snd_hwdep snd_seq snd_seq_device snd_pcm
joydev pcspkr iTCO_wdt iTCO_vendor_support dcdbas serio_raw i2c_i801
snd_timer snd microcode soundcore snd_page_alloc usb_storage i915
drm_kms_helper drm i2c_algo_bit i2c_core video [last unloaded:
scsi_wait_scan]
[ 7481.522651] Pid: 3980, comm: btrfs-endio-wri Tainted: G W
2.6.39-integration-test-20110526-01+ #2
[ 7481.522654] Call Trace:
[ 7481.522659] [<ffffffff8104df7a>] warn_slowpath_common+0x85/0x9d
[ 7481.522665] [<ffffffff8104dfac>] warn_slowpath_null+0x1a/0x1c
[ 7481.522686] [<ffffffffa02dfca8>] btrfs_alloc_free_block+0x14e/0x357
[btrfs]
[ 7481.522705] [<ffffffffa030a073>] ?
map_private_extent_buffer+0xb1/0xd5 [btrfs]
[ 7481.522726] [<ffffffffa02d2987>] __btrfs_cow_block+0x102/0x31e [btrfs]
[ 7481.522736] [<ffffffffa02d1500>] ? leaf_space_used+0xd/0x86 [btrfs]
[ 7481.522746] [<ffffffffa02d2ca7>] btrfs_cow_block+0x104/0x14d [btrfs]
[ 7481.522767] [<ffffffffa02d5a87>] btrfs_search_slot+0x162/0x502 [btrfs]
[ 7481.522780] [<ffffffffa02d6d2d>] btrfs_insert_empty_items+0x6a/0xba
[btrfs]
[ 7481.522786] [<ffffffff8110e0c7>] ? kmem_cache_alloc+0x29/0xf7
[ 7481.522812] [<ffffffffa02f0a37>]
insert_reserved_file_extent.clone.34+0xad/0x1fc [btrfs]
[ 7481.522838] [<ffffffffa03071c9>] ? lock_extent_bits+0x5e/0xa8 [btrfs]
[ 7481.522856] [<ffffffffa02f362c>]
btrfs_endio_direct_write+0x171/0x29a [btrfs]
[ 7481.522872] [<ffffffffa02e6afc>] ? end_workqueue_fn+0xf6/0x10e [btrfs]
[ 7481.522886] [<ffffffff81141934>] bio_endio+0x2d/0x2f
[ 7481.522899] [<ffffffffa02e6b07>] end_workqueue_fn+0x101/0x10e [btrfs]
[ 7481.522925] [<ffffffffa0310951>] worker_loop+0x193/0x4ca [btrfs]
[ 7481.522942] [<ffffffffa03107be>] ? btrfs_queue_worker+0x214/0x214
[btrfs]
[ 7481.522948] [<ffffffff81068dce>] kthread+0x82/0x8a
[ 7481.522962] [<ffffffff8147db64>] kernel_thread_helper+0x4/0x10
[ 7481.522967] [<ffffffff81068d4c>] ? kthread_worker_fn+0x14b/0x14b
[ 7481.522972] [<ffffffff8147db60>] ? gs_change+0x13/0x13
[ 7481.522975] ---[ end trace abb147a5624a0a28 ]---
Stack dumps for more warnings
------------------------------
[21976.930845] WARNING: at fs/btrfs/extent-tree.c:5648
btrfs_alloc_free_block+0x14e/0x357 [btrfs]()
[21976.930847] Hardware name: XPS 8300
[21976.930848] Modules linked in: tcp_lp tun btrfs zlib_deflate
libcrc32c brd fuse cpufreq_ondemand acpi_cpufreq freq_table mperf
ip6t_REJECT nf_conntrack_ipv6 nf_defrag_ipv6 ip6table_filter ip6_tables
ipv6 uinput snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_intel
snd_hda_codec broadcom tg3 snd_hwdep snd_seq snd_seq_device snd_pcm
joydev pcspkr iTCO_wdt iTCO_vendor_support dcdbas serio_raw i2c_i801
snd_timer snd microcode soundcore snd_page_alloc usb_storage i915
drm_kms_helper drm i2c_algo_bit i2c_core video [last unloaded:
scsi_wait_scan]
[21976.930872] Pid: 31794, comm: btrfs-endio-wri Tainted: G W
2.6.39-integration-test-20110526-01+ #2
[21976.930874] Call Trace:
[21976.930880] [<ffffffff8104df7a>] warn_slowpath_common+0x85/0x9d
[21976.930882] [<ffffffff8104dfac>] warn_slowpath_null+0x1a/0x1c
[21976.930889] [<ffffffffa02dfca8>] btrfs_alloc_free_block+0x14e/0x357
[btrfs]
[21976.930898] [<ffffffffa030a073>] ?
map_private_extent_buffer+0xb1/0xd5 [btrfs]
[21976.930904] [<ffffffffa02d2987>] __btrfs_cow_block+0x102/0x31e [btrfs]
[21976.930909] [<ffffffffa02d1300>] ? btrfs_set_item_key+0x3/0x20 [btrfs]
[21976.930913] [<ffffffffa02d2ca7>] btrfs_cow_block+0x104/0x14d [btrfs]
[21976.930919] [<ffffffffa02d5a87>] btrfs_search_slot+0x162/0x502 [btrfs]
[21976.930926] [<ffffffffa02e3e66>] btrfs_lookup_file_extent+0x3c/0x3e
[btrfs]
[21976.930931] [<ffffffffa02d2124>] ? btrfs_alloc_path+0x1a/0x2b [btrfs]
[21976.930940] [<ffffffffa02f9319>] btrfs_drop_extents+0x10e/0x731 [btrfs]
[21976.930943] [<ffffffff8103cc9e>] ? need_resched+0x23/0x2d
[21976.930946] [<ffffffff81474da6>] ? _cond_resched+0xe/0x22
[21976.930949] [<ffffffff8110d58c>] ?
slab_pre_alloc_hook.clone.32+0x2d/0x31
[21976.930952] [<ffffffff8110e0c7>] ? kmem_cache_alloc+0x29/0xf7
[21976.930960] [<ffffffffa02f09fa>]
insert_reserved_file_extent.clone.34+0x70/0x1fc [btrfs]
[21976.930970] [<ffffffffa03071c9>] ? lock_extent_bits+0x5e/0xa8 [btrfs]
[21976.930978] [<ffffffffa02f362c>]
btrfs_endio_direct_write+0x171/0x29a [btrfs]
[21976.930985] [<ffffffffa02e6afc>] ? end_workqueue_fn+0xf6/0x10e [btrfs]
[21976.930988] [<ffffffff81141934>] bio_endio+0x2d/0x2f
[21976.930995] [<ffffffffa02e6b07>] end_workqueue_fn+0x101/0x10e [btrfs]
[21976.931005] [<ffffffffa0310951>] worker_loop+0x193/0x4ca [btrfs]
[21976.931014] [<ffffffffa03107be>] ? btrfs_queue_worker+0x214/0x214
[btrfs]
[21976.931016] [<ffffffff81068dce>] kthread+0x82/0x8a
[21976.931019] [<ffffffff8147db64>] kernel_thread_helper+0x4/0x10
[21976.931021] [<ffffffff81068d4c>] ? kthread_worker_fn+0x14b/0x14b
[21976.931023] [<ffffffff8147db60>] ? gs_change+0x13/0x13
[21976.931025] ---[ end trace abb147a5624a0a29 ]---
[21983.399883] ------------[ cut here ]------------
[21983.399906] WARNING: at fs/btrfs/extent-tree.c:3832
btrfs_free_block_groups+0x13a/0x228 [btrfs]()
[21983.399910] Hardware name: XPS 8300
[21983.399912] Modules linked in: tcp_lp tun btrfs zlib_deflate
libcrc32c brd fuse cpufreq_ondemand acpi_cpufreq freq_table mperf
ip6t_REJECT nf_conntrack_ipv6 nf_defrag_ipv6 ip6table_filter ip6_tables
ipv6 uinput snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_intel
snd_hda_codec broadcom tg3 snd_hwdep snd_seq snd_seq_device snd_pcm
joydev pcspkr iTCO_wdt iTCO_vendor_support dcdbas serio_raw i2c_i801
snd_timer snd microcode soundcore snd_page_alloc usb_storage i915
drm_kms_helper drm i2c_algo_bit i2c_core video [last unloaded:
scsi_wait_scan]
[21983.399958] Pid: 31847, comm: umount Tainted: G W
2.6.39-integration-test-20110526-01+ #2
[21983.399961] Call Trace:
[21983.399969] [<ffffffff8104df7a>] warn_slowpath_common+0x85/0x9d
[21983.399975] [<ffffffff8104dfac>] warn_slowpath_null+0x1a/0x1c
[21983.399989] [<ffffffffa02e0a2b>] btrfs_free_block_groups+0x13a/0x228
[btrfs]
[21983.400006] [<ffffffffa02e975a>] close_ctree+0x1b2/0x35e [btrfs]
[21983.400011] [<ffffffff8112eebb>] ? evict+0x10c/0x115
[21983.400016] [<ffffffff8103cc9e>] ? need_resched+0x23/0x2d
[21983.400021] [<ffffffff8103ccb6>] ? should_resched+0xe/0x2e
[21983.400025] [<ffffffff81474da6>] ? _cond_resched+0xe/0x22
[21983.400029] [<ffffffff814759b1>] ? down_write+0x29/0x49
[21983.400039] [<ffffffffa02cfa1e>] btrfs_put_super+0x1d/0x2c [btrfs]
[21983.400044] [<ffffffff8111c9d4>] generic_shutdown_super+0x74/0xe9
[21983.400048] [<ffffffff8111cac9>] kill_anon_super+0x16/0x50
[21983.400052] [<ffffffff8111ccfc>] deactivate_locked_super+0x26/0x4b
[21983.400056] [<ffffffff8111d4ee>] deactivate_super+0x3a/0x3f
[21983.400061] [<ffffffff81132732>] mntput_no_expire+0xd0/0xd5
[21983.400065] [<ffffffff811333b8>] sys_umount+0x2dc/0x30a
[21983.400069] [<ffffffff8112399e>] ? path_put+0x22/0x27
[21983.400074] [<ffffffff8147ca42>] system_call_fastpath+0x16/0x1b
[21983.400077] ---[ end trace abb147a5624a0a2a ]---
[21983.400079] ------------[ cut here ]------------
[21983.400092] WARNING: at fs/btrfs/extent-tree.c:3833
btrfs_free_block_groups+0x155/0x228 [btrfs]()
[21983.400095] Hardware name: XPS 8300
[21983.400097] Modules linked in: tcp_lp tun btrfs zlib_deflate
libcrc32c brd fuse cpufreq_ondemand acpi_cpufreq freq_table mperf
ip6t_REJECT nf_conntrack_ipv6 nf_defrag_ipv6 ip6table_filter ip6_tables
ipv6 uinput snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_intel
snd_hda_codec broadcom tg3 snd_hwdep snd_seq snd_seq_device snd_pcm
joydev pcspkr iTCO_wdt iTCO_vendor_support dcdbas serio_raw i2c_i801
snd_timer snd microcode soundcore snd_page_alloc usb_storage i915
drm_kms_helper drm i2c_algo_bit i2c_core video [last unloaded:
scsi_wait_scan]
[21983.400136] Pid: 31847, comm: umount Tainted: G W
2.6.39-integration-test-20110526-01+ #2
[21983.400139] Call Trace:
[21983.400143] [<ffffffff8104df7a>] warn_slowpath_common+0x85/0x9d
[21983.400148] [<ffffffff8104dfac>] warn_slowpath_null+0x1a/0x1c
[21983.400160] [<ffffffffa02e0a46>] btrfs_free_block_groups+0x155/0x228
[btrfs]
[21983.400176] [<ffffffffa02e975a>] close_ctree+0x1b2/0x35e [btrfs]
[21983.400179] [<ffffffff8112eebb>] ? evict+0x10c/0x115
[21983.400184] [<ffffffff8103cc9e>] ? need_resched+0x23/0x2d
[21983.400188] [<ffffffff8103ccb6>] ? should_resched+0xe/0x2e
[21983.400191] [<ffffffff81474da6>] ? _cond_resched+0xe/0x22
[21983.400195] [<ffffffff814759b1>] ? down_write+0x29/0x49
[21983.400204] [<ffffffffa02cfa1e>] btrfs_put_super+0x1d/0x2c [btrfs]
[21983.400209] [<ffffffff8111c9d4>] generic_shutdown_super+0x74/0xe9
[21983.400213] [<ffffffff8111cac9>] kill_anon_super+0x16/0x50
[21983.400216] [<ffffffff8111ccfc>] deactivate_locked_super+0x26/0x4b
[21983.400220] [<ffffffff8111d4ee>] deactivate_super+0x3a/0x3f
[21983.400225] [<ffffffff81132732>] mntput_no_expire+0xd0/0xd5
[21983.400229] [<ffffffff811333b8>] sys_umount+0x2dc/0x30a
[21983.400232] [<ffffffff8112399e>] ? path_put+0x22/0x27
[21983.400237] [<ffffffff8147ca42>] system_call_fastpath+0x16/0x1b
[21983.400240] ---[ end trace abb147a5624a0a2b ]---
[21983.400242] ------------[ cut here ]------------
[21983.400254] WARNING: at fs/btrfs/extent-tree.c:6846
btrfs_free_block_groups+0x1e6/0x228 [btrfs]()
[21983.400257] Hardware name: XPS 8300
[21983.400259] Modules linked in: tcp_lp tun btrfs zlib_deflate
libcrc32c brd fuse cpufreq_ondemand acpi_cpufreq freq_table mperf
ip6t_REJECT nf_conntrack_ipv6 nf_defrag_ipv6 ip6table_filter ip6_tables
ipv6 uinput snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_intel
snd_hda_codec broadcom tg3 snd_hwdep snd_seq snd_seq_device snd_pcm
joydev pcspkr iTCO_wdt iTCO_vendor_support dcdbas serio_raw i2c_i801
snd_timer snd microcode soundcore snd_page_alloc usb_storage i915
drm_kms_helper drm i2c_algo_bit i2c_core video [last unloaded:
scsi_wait_scan]
[21983.400298] Pid: 31847, comm: umount Tainted: G W
2.6.39-integration-test-20110526-01+ #2
[21983.400300] Call Trace:
[21983.400305] [<ffffffff8104df7a>] warn_slowpath_common+0x85/0x9d
[21983.400317] [<ffffffffa02e0af5>] ?
btrfs_free_block_groups+0x204/0x228 [btrfs]
[21983.400322] [<ffffffff8104dfac>] warn_slowpath_null+0x1a/0x1c
[21983.400334] [<ffffffffa02e0ad7>] btrfs_free_block_groups+0x1e6/0x228
[btrfs]
[21983.400349] [<ffffffffa02e975a>] close_ctree+0x1b2/0x35e [btrfs]
[21983.400352] [<ffffffff8112eebb>] ? evict+0x10c/0x115
[21983.400356] [<ffffffff8103cc9e>] ? need_resched+0x23/0x2d
[21983.400360] [<ffffffff8103ccb6>] ? should_resched+0xe/0x2e
[21983.400364] [<ffffffff81474da6>] ? _cond_resched+0xe/0x22
[21983.400367] [<ffffffff814759b1>] ? down_write+0x29/0x49
[21983.400377] [<ffffffffa02cfa1e>] btrfs_put_super+0x1d/0x2c [btrfs]
[21983.400381] [<ffffffff8111c9d4>] generic_shutdown_super+0x74/0xe9
[21983.400385] [<ffffffff8111cac9>] kill_anon_super+0x16/0x50
[21983.400389] [<ffffffff8111ccfc>] deactivate_locked_super+0x26/0x4b
[21983.400392] [<ffffffff8111d4ee>] deactivate_super+0x3a/0x3f
[21983.400397] [<ffffffff81132732>] mntput_no_expire+0xd0/0xd5
[21983.400401] [<ffffffff811333b8>] sys_umount+0x2dc/0x30a
[21983.400404] [<ffffffff8112399e>] ? path_put+0x22/0x27
[21983.400409] [<ffffffff8147ca42>] system_call_fastpath+0x16/0x1b
[21983.400412] ---[ end trace abb147a5624a0a2c ]---
Stack dumps for the hang
------------------------
[73934.130640] SysRq : Show Blocked State
[73934.130644] task PC stack pid father
[73934.130676] btrfs-transacti D ffff8801a4a0b440 0 6769 2
0x00000080
[73934.130679] ffff88011f78bd60 0000000000000046 0000000000000000
ffff880100000001
[73934.130682] 0000000000013a80 0000000000013a80 0000000000013a80
ffff8801a21a0000
[73934.130684] 0000000000013a80 ffff88011f78bfd8 0000000000013a80
0000000000013a80
[73934.130687] Call Trace:
[73934.130692] [<ffffffff8106953e>] ? prepare_to_wait+0x6c/0x79
[73934.130704] [<ffffffffa02eb098>] wait_for_commit.clone.14+0x90/0xd5
[btrfs]
[73934.130706] [<ffffffff810692ab>] ? wake_up_bit+0x2a/0x2a
[73934.130714] [<ffffffffa02ebf1c>]
btrfs_commit_transaction+0x102/0x693 [btrfs]
[73934.130721] [<ffffffffa02eb816>] ?
join_transaction.clone.20+0x17b/0x186 [btrfs]
[73934.130723] [<ffffffff810692ab>] ? wake_up_bit+0x2a/0x2a
[73934.130730] [<ffffffffa02e6772>] transaction_kthread+0x17a/0x22f [btrfs]
[73934.130736] [<ffffffffa02e65f8>] ? btrfs_congested_fn+0x8c/0x8c [btrfs]
[73934.130738] [<ffffffff81068dce>] kthread+0x82/0x8a
[73934.130742] [<ffffffff8147db64>] kernel_thread_helper+0x4/0x10
[73934.130743] [<ffffffff81068d4c>] ? kthread_worker_fn+0x14b/0x14b
[73934.130745] [<ffffffff8147db60>] ? gs_change+0x13/0x13
[73934.130747] flush-btrfs-630 D 00000001046677f8 0 6778 2
0x00000080
[73934.130749] ffff88012031fb10 0000000000000046 ffff88012031fa70
ffff880100000000
[73934.130751] 0000000000013a80 0000000000013a80 0000000000013a80
ffff8801a5c68000
[73934.130754] 0000000000013a80 ffff88012031ffd8 0000000000013a80
0000000000013a80
[73934.130756] Call Trace:
[73934.130759] [<ffffffff814750a4>] schedule_timeout+0x36/0xe3
[73934.130761] [<ffffffff8107b6c2>] ? arch_local_irq_save+0x18/0x1e
[73934.130763] [<ffffffff814762bf>] ? _raw_spin_unlock_irqrestore+0x17/0x19
[73934.130765] [<ffffffff8106953e>] ? prepare_to_wait+0x6c/0x79
[73934.130771] [<ffffffffa02ec0dd>]
btrfs_commit_transaction+0x2c3/0x693 [btrfs]
[73934.130773] [<ffffffff810692ab>] ? wake_up_bit+0x2a/0x2a
[73934.130781] [<ffffffffa02f58ba>] btrfs_write_inode+0xa0/0xa9 [btrfs]
[73934.130784] [<ffffffff81138d78>] writeback_single_inode+0x125/0x1bf
[73934.130786] [<ffffffff81139055>] writeback_sb_inodes+0xce/0x160
[73934.130788] [<ffffffff81139d68>] wb_writeback+0x257/0x3a7
[73934.130790] [<ffffffff81139f40>] wb_do_writeback+0x88/0x1a0
[73934.130792] [<ffffffff8105b0a1>] ? run_timer_softirq+0x298/0x298
[73934.130794] [<ffffffff8113a0e3>] bdi_writeback_thread+0x8b/0x20c
[73934.130796] [<ffffffff8113a058>] ? wb_do_writeback+0x1a0/0x1a0
[73934.130798] [<ffffffff81068dce>] kthread+0x82/0x8a
[73934.130800] [<ffffffff8147db64>] kernel_thread_helper+0x4/0x10
[73934.130802] [<ffffffff81068d4c>] ? kthread_worker_fn+0x14b/0x14b
[73934.130804] [<ffffffff8147db60>] ? gs_change+0x13/0x13
[73934.130805] fsstress D 0000000102eb08dd 0 6808 1
0x00000084
[73934.130807] ffff88011d941d48 0000000000000086 0000000000000000
0000000000000400
[73934.130809] 0000000000013a80 0000000000013a80 0000000000013a80
ffff88018c3f5c40
[73934.130812] 0000000000013a80 ffff88011d941fd8 0000000000013a80
0000000000013a80
[73934.130814] Call Trace:
[73934.130816] [<ffffffff8103dadf>] ? resched_task+0x48/0x72
[73934.130818] [<ffffffff814750a4>] schedule_timeout+0x36/0xe3
[73934.130820] [<ffffffff814762bf>] ? _raw_spin_unlock_irqrestore+0x17/0x19
[73934.130822] [<ffffffff8103cc9e>] ? need_resched+0x23/0x2d
[73934.130824] [<ffffffff81474e67>] wait_for_common+0xad/0x102
[73934.130826] [<ffffffff81046df8>] ? try_to_wake_up+0x226/0x226
[73934.130828] [<ffffffff81053dbc>] ? local_bh_enable_ip+0xe/0x10
[73934.130830] [<ffffffff8113cf5c>] ? __sync_filesystem+0x7a/0x7a
[73934.130832] [<ffffffff81474f74>] wait_for_completion+0x1d/0x1f
[73934.130834] [<ffffffff81139717>] sync_inodes_sb+0x91/0x187
[73934.130835] [<ffffffff8113cf5c>] ? __sync_filesystem+0x7a/0x7a
[73934.130837] [<ffffffff8113cf29>] __sync_filesystem+0x47/0x7a
[73934.130839] [<ffffffff8113cf72>] sync_one_sb+0x16/0x18
[73934.130841] [<ffffffff8111d632>] iterate_supers+0x6d/0xc4
[73934.130843] [<ffffffff8113cea7>] sync_filesystems+0x20/0x22
[73934.130845] [<ffffffff8113cfe5>] sys_sync+0x21/0x33
[73934.130847] [<ffffffff8147ca42>] system_call_fastpath+0x16/0x1b
[73934.130848] fsstress D 0000000102eb08dd 0 6809 1
0x00000084
[73934.130850] ffff88011f07fa58 0000000000000082 ffff88010b9bf058
0000000100000001
[73934.130853] 0000000000013a80 0000000000013a80 0000000000013a80
ffff88018c3f2e20
[73934.130855] 0000000000013a80 ffff88011f07ffd8 0000000000013a80
0000000000013a80
[73934.130857] Call Trace:
[73934.130859] [<ffffffff811ea828>] ? avc_has_perm_flags+0x6c/0x81
[73934.130861] [<ffffffff814750a4>] schedule_timeout+0x36/0xe3
[73934.130863] [<ffffffff81476256>] ? _raw_spin_lock+0xe/0x10
[73934.130865] [<ffffffff8103e624>] ? task_rq_lock+0x40/0x72
[73934.130867] [<ffffffff814762bf>] ? _raw_spin_unlock_irqrestore+0x17/0x19
[73934.130869] [<ffffffff8103cc9e>] ? need_resched+0x23/0x2d
[73934.130870] [<ffffffff81474e67>] wait_for_common+0xad/0x102
[73934.130872] [<ffffffff81046df8>] ? try_to_wake_up+0x226/0x226
[73934.130874] [<ffffffff81053dbc>] ? local_bh_enable_ip+0xe/0x10
[73934.130876] [<ffffffff81474f74>] wait_for_completion+0x1d/0x1f
[73934.130877] [<ffffffff811395bd>] writeback_inodes_sb_nr+0x76/0x7d
[73934.130880] [<ffffffff81139670>]
writeback_inodes_sb_nr_if_idle+0x41/0x57
[73934.130885] [<ffffffffa02d9ec4>] shrink_delalloc.clone.46+0xb2/0x155
[btrfs]
[73934.130888] [<ffffffff811f560f>] ? sidtab_context_to_sid+0x5a/0x12c
[73934.130893] [<ffffffffa02da060>]
reserve_metadata_bytes.clone.47+0xf9/0x1b3 [btrfs]
[73934.130899] [<ffffffffa02dcc09>] btrfs_block_rsv_add+0x2c/0x4f [btrfs]
[73934.130901] [<ffffffff8103ccb6>] ? should_resched+0xe/0x2e
[73934.130907] [<ffffffffa02dce32>]
btrfs_trans_reserve_metadata+0x4f/0x74 [btrfs]
[73934.130914] [<ffffffffa02ec899>] start_transaction+0x190/0x24f [btrfs]
[73934.130921] [<ffffffffa02ecc7b>] btrfs_start_transaction+0x13/0x15
[btrfs]
[73934.130928] [<ffffffffa02f6e04>] btrfs_mkdir+0x46/0x1e5 [btrfs]
[73934.130931] [<ffffffff8112520a>] vfs_mkdir+0x63/0x9f
[73934.130933] [<ffffffff81127373>] sys_mkdirat+0x96/0xe7
[73934.130934] [<ffffffff8112399e>] ? path_put+0x22/0x27
[73934.130937] [<ffffffff810988fb>] ? audit_syscall_entry+0x11c/0x148
[73934.130938] [<ffffffff811273dc>] sys_mkdir+0x18/0x1a
[73934.130940] [<ffffffff8147ca42>] system_call_fastpath+0x16/0x1b
[73934.130942] updatedb D 0000000102f9f23b 0 7525 7519
0x00000080
[73934.130944] ffff88011ee61e28 0000000000000086 ffff88011ee61f28
ffff880100000000
[73934.130946] 0000000000013a80 0000000000013a80 0000000000013a80
ffff8801a5ccae20
[73934.130949] 0000000000013a80 ffff88011ee61fd8 0000000000013a80
0000000000013a80
[73934.130951] Call Trace:
[73934.130953] [<ffffffff81475660>] __mutex_lock_common.clone.5+0x12f/0x196
[73934.130955] [<ffffffff81129280>] ? filldir64+0xd5/0xd5
[73934.130957] [<ffffffff814756ef>]
__mutex_lock_killable_slowpath+0x13/0x15
[73934.130960] [<ffffffff8106bd38>] __mutex_fastpath_lock_retval+0x18/0x1a
[73934.130961] [<ffffffff81475471>] mutex_lock_killable+0x38/0x54
[73934.130963] [<ffffffff81129460>] vfs_readdir+0x56/0xac
[73934.130965] [<ffffffff8112959f>] sys_getdents+0x81/0xd1
[73934.130967] [<ffffffff8147ca42>] system_call_fastpath+0x16/0x1b
[73934.130970] sync D 0000000104667813 0 8162 1930
0x00000080
[73934.130972] ffff880190491d48 0000000000000082 0000000000000000
0000000000000000
[73934.130974] 0000000000013a80 0000000000013a80 0000000000013a80
ffff88015abe0000
[73934.130976] 0000000000013a80 ffff880190491fd8 0000000000013a80
0000000000013a80
[73934.130978] Call Trace:
[73934.130980] [<ffffffff814750a4>] schedule_timeout+0x36/0xe3
[73934.130982] [<ffffffff814762bf>] ? _raw_spin_unlock_irqrestore+0x17/0x19
[73934.130984] [<ffffffff8103cc9e>] ? need_resched+0x23/0x2d
[73934.130985] [<ffffffff81474e67>] wait_for_common+0xad/0x102
[73934.130987] [<ffffffff81046df8>] ? try_to_wake_up+0x226/0x226
[73934.130989] [<ffffffff81053dbc>] ? local_bh_enable_ip+0xe/0x10
[73934.130991] [<ffffffff8113cf5c>] ? __sync_filesystem+0x7a/0x7a
[73934.130993] [<ffffffff81474f74>] wait_for_completion+0x1d/0x1f
[73934.130994] [<ffffffff811395bd>] writeback_inodes_sb_nr+0x76/0x7d
[73934.130996] [<ffffffff811395e6>] writeback_inodes_sb+0x22/0x24
[73934.130998] [<ffffffff8113cf33>] __sync_filesystem+0x51/0x7a
[73934.131000] [<ffffffff8113cf72>] sync_one_sb+0x16/0x18
[73934.131002] [<ffffffff8111d632>] iterate_supers+0x6d/0xc4
[73934.131004] [<ffffffff8113cea7>] sync_filesystems+0x20/0x22
[73934.131005] [<ffffffff8113cfdb>] sys_sync+0x17/0x33
[73934.131007] [<ffffffff8147ca42>] system_call_fastpath+0x16/0x1b
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: btrfs hang on brd
2011-05-31 7:03 btrfs hang on brd Adrian Hunter
@ 2011-06-01 8:54 ` David Sterba
2011-06-01 10:07 ` Adrian Hunter
0 siblings, 1 reply; 6+ messages in thread
From: David Sterba @ 2011-06-01 8:54 UTC (permalink / raw)
To: Adrian Hunter; +Cc: chris.mason, linux-btrfs
On Tue, May 31, 2011 at 10:03:12AM +0300, Adrian Hunter wrote:
> Hi
>
> I seem to be able to get btrfs reproducibly to
> produce warnings and finally hang when running
> a stress test on a ramdisk.
>
> Testing was done using the "integration-test"
> branch of btrfs-unstable. Note that I also tested
> v2.6.39 and "integration-test" took much longer to
> hang i.e. it is an improvement
>
> The test script and stack dumps are below.
>
> Is this a valid test?
>
> Is it worth me investigating these?
I've tried to reproduce myself, but the fsstress utility (taken from
latest LTP suite) crashes sometimes and I cannot take it as a proper
reproduction. Can you point me to the exact version you used?
(But no warning or hang observed, on top of 3.0-rc1 + cmason/for-linus)
> Test
> ----
>
> #!/bin/sh
>
> sudo modprobe brd rd_size=262144
this is minimal size possible, 256MB
>
> sudo umount /mnt/test/ 2> /dev/null
>
> echo 'mkfs.btrfs /dev/ram0'
>
> sudo mkfs.btrfs /dev/ram0
>
> sudo mkdir -p /mnt/test
>
> echo 'mount -t btrfs /dev/ram0 /mnt/test'
>
> sudo mount -t btrfs /dev/ram0 /mnt/test
>
> sudo mkdir -p /mnt/test/test
>
> sudo chown $USER /mnt/test/test
> sudo chgrp $USER /mnt/test/test
>
> sudo umount /mnt/test
>
> full=0
> i=0
> while true; do
> sudo mount -t btrfs /dev/ram0 /mnt/test
>
> if df | grep ram0 | grep 100% > /dev/null; then
> full=`expr $full \+ 1`
> if test $full -gt 6;then
> rm -rf /mnt/test/test/*
> full=0
> fi
> else
> full=0
> fi
>
> fsstress -c -r -d /mnt/test/test -p 3 -n 1000 -l 10
>
> sudo umount /mnt/test
>
> i=`expr $i \+ 1`
> echo $i
> done
>
>
>
> Stack dumps for warnings
> ------------------------
>
>
> [ 7481.520750] WARNING: at fs/btrfs/extent-tree.c:5648
5644 ret = block_rsv_use_bytes(block_rsv, blocksize);
5645 if (!ret)
5646 return block_rsv;
5647 if (ret) {
5648 WARN_ON(1);
5649 ret = reserve_metadata_bytes(trans, root, block_rsv, blocksize,
5650 0);
and block_rsv_use_bytes() returns nonzero in case of ENOSPC.
> [ 7481.521176] WARNING: at fs/btrfs/extent-tree.c:5648 btrfs_alloc_free_block+0x14e/0x357 [btrfs]()
> [ 7481.521178] Hardware name: XPS 8300
> [ 7481.521180] Modules linked in: tcp_lp tun btrfs zlib_deflate
> libcrc32c brd fuse cpufreq_ondemand acpi_cpufreq freq_table mperf
> ip6t_REJECT nf_conntrack_ipv6 nf_defrag_ipv6 ip6table_filter
> ip6_tables ipv6 uinput snd_hda_codec_hdmi snd_hda_codec_realtek
> snd_hda_intel snd_hda_codec broadcom tg3 snd_hwdep snd_seq
> snd_seq_device snd_pcm joydev pcspkr iTCO_wdt iTCO_vendor_support
> dcdbas serio_raw i2c_i801 snd_timer snd microcode soundcore
> snd_page_alloc usb_storage i915 drm_kms_helper drm i2c_algo_bit
> i2c_core video [last unloaded: scsi_wait_scan]
> [ 7481.521237] Pid: 3980, comm: btrfs-endio-wri Tainted: G W
> 2.6.39-integration-test-20110526-01+ #2
> [ 7481.521240] Call Trace:
> [ 7481.521245] [<ffffffff8104df7a>] warn_slowpath_common+0x85/0x9d
> [ 7481.521250] [<ffffffff8104dfac>] warn_slowpath_null+0x1a/0x1c
> [ 7481.521288] [<ffffffffa02dfca8>] btrfs_alloc_free_block+0x14e/0x357 [btrfs]
> [ 7481.521303] [<ffffffffa030a073>] ? map_private_extent_buffer+0xb1/0xd5 [btrfs]
> [ 7481.521313] [<ffffffffa02d2987>] __btrfs_cow_block+0x102/0x31e [btrfs]
> [ 7481.521322] [<ffffffffa02d1300>] ? btrfs_set_item_key+0x3/0x20 [btrfs]
> [ 7481.521341] [<ffffffffa02d2ca7>] btrfs_cow_block+0x104/0x14d [btrfs]
> [ 7481.521353] [<ffffffffa02d5a87>] btrfs_search_slot+0x162/0x502 [btrfs]
> [ 7481.521378] [<ffffffffa02e3e66>] btrfs_lookup_file_extent+0x3c/0x3e [btrfs]
> [ 7481.521388] [<ffffffffa02d2124>] ? btrfs_alloc_path+0x1a/0x2b [btrfs]
> [ 7481.521405] [<ffffffffa02f9319>] btrfs_drop_extents+0x10e/0x731 [btrfs]
> [ 7481.521410] [<ffffffff8103cc9e>] ? need_resched+0x23/0x2d
> [ 7481.521415] [<ffffffff81474da6>] ? _cond_resched+0xe/0x22
> [ 7481.521420] [<ffffffff8110d58c>] ? slab_pre_alloc_hook.clone.32+0x2d/0x31
> [ 7481.521426] [<ffffffff8110e0c7>] ? kmem_cache_alloc+0x29/0xf7
> [ 7481.521441] [<ffffffffa02f09fa>] insert_reserved_file_extent.clone.34+0x70/0x1fc [btrfs]
> [ 7481.521470] [<ffffffffa03071c9>] ? lock_extent_bits+0x5e/0xa8 [btrfs]
> [ 7481.521496] [<ffffffffa02f362c>] btrfs_endio_direct_write+0x171/0x29a [btrfs]
> [ 7481.521511] [<ffffffffa02e6afc>] ? end_workqueue_fn+0xf6/0x10e [btrfs]
> [ 7481.521516] [<ffffffff81141934>] bio_endio+0x2d/0x2f
> [ 7481.521539] [<ffffffffa02e6b07>] end_workqueue_fn+0x101/0x10e [btrfs]
> [ 7481.521565] [<ffffffffa0310951>] worker_loop+0x193/0x4ca [btrfs]
> [ 7481.521581] [<ffffffffa03107be>] ? btrfs_queue_worker+0x214/0x214 [btrfs]
> [ 7481.521586] [<ffffffff81068dce>] kthread+0x82/0x8a
> [ 7481.521591] [<ffffffff8147db64>] kernel_thread_helper+0x4/0x10
> [ 7481.521596] [<ffffffff81068d4c>] ? kthread_worker_fn+0x14b/0x14b
> [ 7481.521601] [<ffffffff8147db60>] ? gs_change+0x13/0x13
> [ 7481.521604] ---[ end trace abb147a5624a0a25 ]---
> [ 7481.521639] ------------[ cut here ]------------
>
> Stack dumps for more warnings
> ------------------------------
>
> [21983.399906] WARNING: at fs/btrfs/extent-tree.c:3832
3829 static void release_global_block_rsv(struct btrfs_fs_info *fs_info)
3830 {
3831 block_rsv_release_bytes(&fs_info->global_block_rsv, NULL, (u64)-1);
3832 WARN_ON(fs_info->delalloc_block_rsv.size > 0);
3833 WARN_ON(fs_info->delalloc_block_rsv.reserved > 0);
in release_global_block_rsv(block_rsv, NULL, num_bytes = (u64)-1):
3543 if (num_bytes == (u64)-1)
3544 num_bytes = block_rsv->size;
3545 block_rsv->size -= num_bytes;
now block_rsv->size is 0, right? but why did the warn trigger after return from
the call, there is no other assignment in this function. another thread?
possible.
3546 if (block_rsv->reserved >= block_rsv->size) {
3547 num_bytes = block_rsv->reserved - block_rsv->size;
3548 block_rsv->reserved = block_rsv->size;
reserved is now 0, but changed later in the func
3549 block_rsv->full = 1;
3550 } else {
3551 num_bytes = 0;
3552 }
> btrfs_free_block_groups+0x13a/0x228 [btrfs]()
> [21983.399910] Hardware name: XPS 8300
> [21983.399912] Modules linked in: tcp_lp tun btrfs zlib_deflate
> libcrc32c brd fuse cpufreq_ondemand acpi_cpufreq freq_table mperf
> ip6t_REJECT nf_conntrack_ipv6 nf_defrag_ipv6 ip6table_filter
> ip6_tables ipv6 uinput snd_hda_codec_hdmi snd_hda_codec_realtek
> snd_hda_intel snd_hda_codec broadcom tg3 snd_hwdep snd_seq
> snd_seq_device snd_pcm joydev pcspkr iTCO_wdt iTCO_vendor_support
> dcdbas serio_raw i2c_i801 snd_timer snd microcode soundcore
> snd_page_alloc usb_storage i915 drm_kms_helper drm i2c_algo_bit
> i2c_core video [last unloaded: scsi_wait_scan]
> [21983.399958] Pid: 31847, comm: umount Tainted: G W
> 2.6.39-integration-test-20110526-01+ #2
> [21983.399961] Call Trace:
> [21983.399969] [<ffffffff8104df7a>] warn_slowpath_common+0x85/0x9d
> [21983.399975] [<ffffffff8104dfac>] warn_slowpath_null+0x1a/0x1c
> [21983.399989] [<ffffffffa02e0a2b>]
> btrfs_free_block_groups+0x13a/0x228 [btrfs]
> [21983.400006] [<ffffffffa02e975a>] close_ctree+0x1b2/0x35e [btrfs]
> [21983.400011] [<ffffffff8112eebb>] ? evict+0x10c/0x115
> [21983.400016] [<ffffffff8103cc9e>] ? need_resched+0x23/0x2d
> [21983.400021] [<ffffffff8103ccb6>] ? should_resched+0xe/0x2e
> [21983.400025] [<ffffffff81474da6>] ? _cond_resched+0xe/0x22
> [21983.400029] [<ffffffff814759b1>] ? down_write+0x29/0x49
> [21983.400039] [<ffffffffa02cfa1e>] btrfs_put_super+0x1d/0x2c [btrfs]
> [21983.400044] [<ffffffff8111c9d4>] generic_shutdown_super+0x74/0xe9
> [21983.400048] [<ffffffff8111cac9>] kill_anon_super+0x16/0x50
> [21983.400052] [<ffffffff8111ccfc>] deactivate_locked_super+0x26/0x4b
> [21983.400056] [<ffffffff8111d4ee>] deactivate_super+0x3a/0x3f
> [21983.400061] [<ffffffff81132732>] mntput_no_expire+0xd0/0xd5
> [21983.400065] [<ffffffff811333b8>] sys_umount+0x2dc/0x30a
> [21983.400069] [<ffffffff8112399e>] ? path_put+0x22/0x27
> [21983.400074] [<ffffffff8147ca42>] system_call_fastpath+0x16/0x1b
> [21983.400077] ---[ end trace abb147a5624a0a2a ]---
> [21983.400079] ------------[ cut here ]------------
> [21983.400092] WARNING: at fs/btrfs/extent-tree.c:3833
> btrfs_free_block_groups+0x155/0x228 [btrfs]()
->reserved field of block_rsv
> [21983.400095] Hardware name: XPS 8300
> [21983.400097] Modules linked in: tcp_lp tun btrfs zlib_deflate
> libcrc32c brd fuse cpufreq_ondemand acpi_cpufreq freq_table mperf
> ip6t_REJECT nf_conntrack_ipv6 nf_defrag_ipv6 ip6table_filter
> ip6_tables ipv6 uinput snd_hda_codec_hdmi snd_hda_codec_realtek
> snd_hda_intel snd_hda_codec broadcom tg3 snd_hwdep snd_seq
> snd_seq_device snd_pcm joydev pcspkr iTCO_wdt iTCO_vendor_support
> dcdbas serio_raw i2c_i801 snd_timer snd microcode soundcore
> snd_page_alloc usb_storage i915 drm_kms_helper drm i2c_algo_bit
> i2c_core video [last unloaded: scsi_wait_scan]
> [21983.400136] Pid: 31847, comm: umount Tainted: G W
> 2.6.39-integration-test-20110526-01+ #2
> [21983.400139] Call Trace:
> [21983.400143] [<ffffffff8104df7a>] warn_slowpath_common+0x85/0x9d
> [21983.400148] [<ffffffff8104dfac>] warn_slowpath_null+0x1a/0x1c
> [21983.400160] [<ffffffffa02e0a46>]
> btrfs_free_block_groups+0x155/0x228 [btrfs]
> [21983.400176] [<ffffffffa02e975a>] close_ctree+0x1b2/0x35e [btrfs]
> [21983.400179] [<ffffffff8112eebb>] ? evict+0x10c/0x115
> [21983.400184] [<ffffffff8103cc9e>] ? need_resched+0x23/0x2d
> [21983.400188] [<ffffffff8103ccb6>] ? should_resched+0xe/0x2e
> [21983.400191] [<ffffffff81474da6>] ? _cond_resched+0xe/0x22
> [21983.400195] [<ffffffff814759b1>] ? down_write+0x29/0x49
> [21983.400204] [<ffffffffa02cfa1e>] btrfs_put_super+0x1d/0x2c [btrfs]
> [21983.400209] [<ffffffff8111c9d4>] generic_shutdown_super+0x74/0xe9
> [21983.400213] [<ffffffff8111cac9>] kill_anon_super+0x16/0x50
> [21983.400216] [<ffffffff8111ccfc>] deactivate_locked_super+0x26/0x4b
> [21983.400220] [<ffffffff8111d4ee>] deactivate_super+0x3a/0x3f
> [21983.400225] [<ffffffff81132732>] mntput_no_expire+0xd0/0xd5
> [21983.400229] [<ffffffff811333b8>] sys_umount+0x2dc/0x30a
> [21983.400232] [<ffffffff8112399e>] ? path_put+0x22/0x27
> [21983.400237] [<ffffffff8147ca42>] system_call_fastpath+0x16/0x1b
> [21983.400240] ---[ end trace abb147a5624a0a2b ]---
> [21983.400242] ------------[ cut here ]------------
> [21983.400254] WARNING: at fs/btrfs/extent-tree.c:6846
6844 if (space_info->bytes_pinned > 0 ||
6845 space_info->bytes_reserved > 0) {
6846 WARN_ON(1);
6847 dump_space_info(space_info, 0, 0);
6848 }
> btrfs_free_block_groups+0x1e6/0x228 [btrfs]()
> [21983.400257] Hardware name: XPS 8300
> [21983.400259] Modules linked in: tcp_lp tun btrfs zlib_deflate
> libcrc32c brd fuse cpufreq_ondemand acpi_cpufreq freq_table mperf
> ip6t_REJECT nf_conntrack_ipv6 nf_defrag_ipv6 ip6table_filter
> ip6_tables ipv6 uinput snd_hda_codec_hdmi snd_hda_codec_realtek
> snd_hda_intel snd_hda_codec broadcom tg3 snd_hwdep snd_seq
> snd_seq_device snd_pcm joydev pcspkr iTCO_wdt iTCO_vendor_support
> dcdbas serio_raw i2c_i801 snd_timer snd microcode soundcore
> snd_page_alloc usb_storage i915 drm_kms_helper drm i2c_algo_bit
> i2c_core video [last unloaded: scsi_wait_scan]
> [21983.400298] Pid: 31847, comm: umount Tainted: G W
> 2.6.39-integration-test-20110526-01+ #2
> [21983.400300] Call Trace:
> [21983.400305] [<ffffffff8104df7a>] warn_slowpath_common+0x85/0x9d
> [21983.400317] [<ffffffffa02e0af5>] ?
> btrfs_free_block_groups+0x204/0x228 [btrfs]
> [21983.400322] [<ffffffff8104dfac>] warn_slowpath_null+0x1a/0x1c
> [21983.400334] [<ffffffffa02e0ad7>]
> btrfs_free_block_groups+0x1e6/0x228 [btrfs]
> [21983.400349] [<ffffffffa02e975a>] close_ctree+0x1b2/0x35e [btrfs]
> [21983.400352] [<ffffffff8112eebb>] ? evict+0x10c/0x115
> [21983.400356] [<ffffffff8103cc9e>] ? need_resched+0x23/0x2d
> [21983.400360] [<ffffffff8103ccb6>] ? should_resched+0xe/0x2e
> [21983.400364] [<ffffffff81474da6>] ? _cond_resched+0xe/0x22
> [21983.400367] [<ffffffff814759b1>] ? down_write+0x29/0x49
> [21983.400377] [<ffffffffa02cfa1e>] btrfs_put_super+0x1d/0x2c [btrfs]
> [21983.400381] [<ffffffff8111c9d4>] generic_shutdown_super+0x74/0xe9
> [21983.400385] [<ffffffff8111cac9>] kill_anon_super+0x16/0x50
> [21983.400389] [<ffffffff8111ccfc>] deactivate_locked_super+0x26/0x4b
> [21983.400392] [<ffffffff8111d4ee>] deactivate_super+0x3a/0x3f
> [21983.400397] [<ffffffff81132732>] mntput_no_expire+0xd0/0xd5
> [21983.400401] [<ffffffff811333b8>] sys_umount+0x2dc/0x30a
> [21983.400404] [<ffffffff8112399e>] ? path_put+0x22/0x27
> [21983.400409] [<ffffffff8147ca42>] system_call_fastpath+0x16/0x1b
> [21983.400412] ---[ end trace abb147a5624a0a2c ]---
>
>
>
> Stack dumps for the hang
> ------------------------
the hang seems serious, it's stuck at fs shutdown under an ENOSPC condition
when several operations are in progress, see the stacks for more (background writeback,
sync, mkdir, readdir).
I didn't go further in pre-analysis, obviously the traces have one in common:
block reserves and ENOSPC.
david
> [73934.130640] SysRq : Show Blocked State
> [73934.130644] task PC stack pid father
> [73934.130676] btrfs-transacti D ffff8801a4a0b440 0 6769 2
> 0x00000080
> [73934.130679] ffff88011f78bd60 0000000000000046 0000000000000000
> ffff880100000001
> [73934.130682] 0000000000013a80 0000000000013a80 0000000000013a80
> ffff8801a21a0000
> [73934.130684] 0000000000013a80 ffff88011f78bfd8 0000000000013a80
> 0000000000013a80
> [73934.130687] Call Trace:
> [73934.130692] [<ffffffff8106953e>] ? prepare_to_wait+0x6c/0x79
> [73934.130704] [<ffffffffa02eb098>]
> wait_for_commit.clone.14+0x90/0xd5 [btrfs]
> [73934.130706] [<ffffffff810692ab>] ? wake_up_bit+0x2a/0x2a
> [73934.130714] [<ffffffffa02ebf1c>]
> btrfs_commit_transaction+0x102/0x693 [btrfs]
> [73934.130721] [<ffffffffa02eb816>] ?
> join_transaction.clone.20+0x17b/0x186 [btrfs]
> [73934.130723] [<ffffffff810692ab>] ? wake_up_bit+0x2a/0x2a
> [73934.130730] [<ffffffffa02e6772>] transaction_kthread+0x17a/0x22f [btrfs]
> [73934.130736] [<ffffffffa02e65f8>] ? btrfs_congested_fn+0x8c/0x8c [btrfs]
> [73934.130738] [<ffffffff81068dce>] kthread+0x82/0x8a
> [73934.130742] [<ffffffff8147db64>] kernel_thread_helper+0x4/0x10
> [73934.130743] [<ffffffff81068d4c>] ? kthread_worker_fn+0x14b/0x14b
> [73934.130745] [<ffffffff8147db60>] ? gs_change+0x13/0x13
> [73934.130747] flush-btrfs-630 D 00000001046677f8 0 6778 2
> 0x00000080
> [73934.130749] ffff88012031fb10 0000000000000046 ffff88012031fa70
> ffff880100000000
> [73934.130751] 0000000000013a80 0000000000013a80 0000000000013a80
> ffff8801a5c68000
> [73934.130754] 0000000000013a80 ffff88012031ffd8 0000000000013a80
> 0000000000013a80
> [73934.130756] Call Trace:
> [73934.130759] [<ffffffff814750a4>] schedule_timeout+0x36/0xe3
> [73934.130761] [<ffffffff8107b6c2>] ? arch_local_irq_save+0x18/0x1e
> [73934.130763] [<ffffffff814762bf>] ? _raw_spin_unlock_irqrestore+0x17/0x19
> [73934.130765] [<ffffffff8106953e>] ? prepare_to_wait+0x6c/0x79
> [73934.130771] [<ffffffffa02ec0dd>]
> btrfs_commit_transaction+0x2c3/0x693 [btrfs]
> [73934.130773] [<ffffffff810692ab>] ? wake_up_bit+0x2a/0x2a
> [73934.130781] [<ffffffffa02f58ba>] btrfs_write_inode+0xa0/0xa9 [btrfs]
> [73934.130784] [<ffffffff81138d78>] writeback_single_inode+0x125/0x1bf
> [73934.130786] [<ffffffff81139055>] writeback_sb_inodes+0xce/0x160
> [73934.130788] [<ffffffff81139d68>] wb_writeback+0x257/0x3a7
> [73934.130790] [<ffffffff81139f40>] wb_do_writeback+0x88/0x1a0
> [73934.130792] [<ffffffff8105b0a1>] ? run_timer_softirq+0x298/0x298
> [73934.130794] [<ffffffff8113a0e3>] bdi_writeback_thread+0x8b/0x20c
> [73934.130796] [<ffffffff8113a058>] ? wb_do_writeback+0x1a0/0x1a0
> [73934.130798] [<ffffffff81068dce>] kthread+0x82/0x8a
> [73934.130800] [<ffffffff8147db64>] kernel_thread_helper+0x4/0x10
> [73934.130802] [<ffffffff81068d4c>] ? kthread_worker_fn+0x14b/0x14b
> [73934.130804] [<ffffffff8147db60>] ? gs_change+0x13/0x13
> [73934.130805] fsstress D 0000000102eb08dd 0 6808 1
> 0x00000084
> [73934.130807] ffff88011d941d48 0000000000000086 0000000000000000
> 0000000000000400
> [73934.130809] 0000000000013a80 0000000000013a80 0000000000013a80
> ffff88018c3f5c40
> [73934.130812] 0000000000013a80 ffff88011d941fd8 0000000000013a80
> 0000000000013a80
> [73934.130814] Call Trace:
> [73934.130816] [<ffffffff8103dadf>] ? resched_task+0x48/0x72
> [73934.130818] [<ffffffff814750a4>] schedule_timeout+0x36/0xe3
> [73934.130820] [<ffffffff814762bf>] ? _raw_spin_unlock_irqrestore+0x17/0x19
> [73934.130822] [<ffffffff8103cc9e>] ? need_resched+0x23/0x2d
> [73934.130824] [<ffffffff81474e67>] wait_for_common+0xad/0x102
> [73934.130826] [<ffffffff81046df8>] ? try_to_wake_up+0x226/0x226
> [73934.130828] [<ffffffff81053dbc>] ? local_bh_enable_ip+0xe/0x10
> [73934.130830] [<ffffffff8113cf5c>] ? __sync_filesystem+0x7a/0x7a
> [73934.130832] [<ffffffff81474f74>] wait_for_completion+0x1d/0x1f
> [73934.130834] [<ffffffff81139717>] sync_inodes_sb+0x91/0x187
> [73934.130835] [<ffffffff8113cf5c>] ? __sync_filesystem+0x7a/0x7a
> [73934.130837] [<ffffffff8113cf29>] __sync_filesystem+0x47/0x7a
> [73934.130839] [<ffffffff8113cf72>] sync_one_sb+0x16/0x18
> [73934.130841] [<ffffffff8111d632>] iterate_supers+0x6d/0xc4
> [73934.130843] [<ffffffff8113cea7>] sync_filesystems+0x20/0x22
> [73934.130845] [<ffffffff8113cfe5>] sys_sync+0x21/0x33
> [73934.130847] [<ffffffff8147ca42>] system_call_fastpath+0x16/0x1b
> [73934.130848] fsstress D 0000000102eb08dd 0 6809 1
> 0x00000084
> [73934.130850] ffff88011f07fa58 0000000000000082 ffff88010b9bf058
> 0000000100000001
> [73934.130853] 0000000000013a80 0000000000013a80 0000000000013a80
> ffff88018c3f2e20
> [73934.130855] 0000000000013a80 ffff88011f07ffd8 0000000000013a80
> 0000000000013a80
> [73934.130857] Call Trace:
> [73934.130859] [<ffffffff811ea828>] ? avc_has_perm_flags+0x6c/0x81
> [73934.130861] [<ffffffff814750a4>] schedule_timeout+0x36/0xe3
> [73934.130863] [<ffffffff81476256>] ? _raw_spin_lock+0xe/0x10
> [73934.130865] [<ffffffff8103e624>] ? task_rq_lock+0x40/0x72
> [73934.130867] [<ffffffff814762bf>] ? _raw_spin_unlock_irqrestore+0x17/0x19
> [73934.130869] [<ffffffff8103cc9e>] ? need_resched+0x23/0x2d
> [73934.130870] [<ffffffff81474e67>] wait_for_common+0xad/0x102
> [73934.130872] [<ffffffff81046df8>] ? try_to_wake_up+0x226/0x226
> [73934.130874] [<ffffffff81053dbc>] ? local_bh_enable_ip+0xe/0x10
> [73934.130876] [<ffffffff81474f74>] wait_for_completion+0x1d/0x1f
> [73934.130877] [<ffffffff811395bd>] writeback_inodes_sb_nr+0x76/0x7d
> [73934.130880] [<ffffffff81139670>]
> writeback_inodes_sb_nr_if_idle+0x41/0x57
> [73934.130885] [<ffffffffa02d9ec4>]
> shrink_delalloc.clone.46+0xb2/0x155 [btrfs]
> [73934.130888] [<ffffffff811f560f>] ? sidtab_context_to_sid+0x5a/0x12c
> [73934.130893] [<ffffffffa02da060>]
> reserve_metadata_bytes.clone.47+0xf9/0x1b3 [btrfs]
> [73934.130899] [<ffffffffa02dcc09>] btrfs_block_rsv_add+0x2c/0x4f [btrfs]
> [73934.130901] [<ffffffff8103ccb6>] ? should_resched+0xe/0x2e
> [73934.130907] [<ffffffffa02dce32>]
> btrfs_trans_reserve_metadata+0x4f/0x74 [btrfs]
> [73934.130914] [<ffffffffa02ec899>] start_transaction+0x190/0x24f [btrfs]
> [73934.130921] [<ffffffffa02ecc7b>]
> btrfs_start_transaction+0x13/0x15 [btrfs]
> [73934.130928] [<ffffffffa02f6e04>] btrfs_mkdir+0x46/0x1e5 [btrfs]
> [73934.130931] [<ffffffff8112520a>] vfs_mkdir+0x63/0x9f
> [73934.130933] [<ffffffff81127373>] sys_mkdirat+0x96/0xe7
> [73934.130934] [<ffffffff8112399e>] ? path_put+0x22/0x27
> [73934.130937] [<ffffffff810988fb>] ? audit_syscall_entry+0x11c/0x148
> [73934.130938] [<ffffffff811273dc>] sys_mkdir+0x18/0x1a
> [73934.130940] [<ffffffff8147ca42>] system_call_fastpath+0x16/0x1b
> [73934.130942] updatedb D 0000000102f9f23b 0 7525 7519
> 0x00000080
> [73934.130944] ffff88011ee61e28 0000000000000086 ffff88011ee61f28
> ffff880100000000
> [73934.130946] 0000000000013a80 0000000000013a80 0000000000013a80
> ffff8801a5ccae20
> [73934.130949] 0000000000013a80 ffff88011ee61fd8 0000000000013a80
> 0000000000013a80
> [73934.130951] Call Trace:
> [73934.130953] [<ffffffff81475660>] __mutex_lock_common.clone.5+0x12f/0x196
> [73934.130955] [<ffffffff81129280>] ? filldir64+0xd5/0xd5
> [73934.130957] [<ffffffff814756ef>]
> __mutex_lock_killable_slowpath+0x13/0x15
> [73934.130960] [<ffffffff8106bd38>] __mutex_fastpath_lock_retval+0x18/0x1a
> [73934.130961] [<ffffffff81475471>] mutex_lock_killable+0x38/0x54
> [73934.130963] [<ffffffff81129460>] vfs_readdir+0x56/0xac
> [73934.130965] [<ffffffff8112959f>] sys_getdents+0x81/0xd1
> [73934.130967] [<ffffffff8147ca42>] system_call_fastpath+0x16/0x1b
> [73934.130970] sync D 0000000104667813 0 8162 1930
> 0x00000080
> [73934.130972] ffff880190491d48 0000000000000082 0000000000000000
> 0000000000000000
> [73934.130974] 0000000000013a80 0000000000013a80 0000000000013a80
> ffff88015abe0000
> [73934.130976] 0000000000013a80 ffff880190491fd8 0000000000013a80
> 0000000000013a80
> [73934.130978] Call Trace:
> [73934.130980] [<ffffffff814750a4>] schedule_timeout+0x36/0xe3
> [73934.130982] [<ffffffff814762bf>] ? _raw_spin_unlock_irqrestore+0x17/0x19
> [73934.130984] [<ffffffff8103cc9e>] ? need_resched+0x23/0x2d
> [73934.130985] [<ffffffff81474e67>] wait_for_common+0xad/0x102
> [73934.130987] [<ffffffff81046df8>] ? try_to_wake_up+0x226/0x226
> [73934.130989] [<ffffffff81053dbc>] ? local_bh_enable_ip+0xe/0x10
> [73934.130991] [<ffffffff8113cf5c>] ? __sync_filesystem+0x7a/0x7a
> [73934.130993] [<ffffffff81474f74>] wait_for_completion+0x1d/0x1f
> [73934.130994] [<ffffffff811395bd>] writeback_inodes_sb_nr+0x76/0x7d
> [73934.130996] [<ffffffff811395e6>] writeback_inodes_sb+0x22/0x24
> [73934.130998] [<ffffffff8113cf33>] __sync_filesystem+0x51/0x7a
> [73934.131000] [<ffffffff8113cf72>] sync_one_sb+0x16/0x18
> [73934.131002] [<ffffffff8111d632>] iterate_supers+0x6d/0xc4
> [73934.131004] [<ffffffff8113cea7>] sync_filesystems+0x20/0x22
> [73934.131005] [<ffffffff8113cfdb>] sys_sync+0x17/0x33
> [73934.131007] [<ffffffff8147ca42>] system_call_fastpath+0x16/0x1b
> --
> 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
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: btrfs hang on brd
2011-06-01 8:54 ` David Sterba
@ 2011-06-01 10:07 ` Adrian Hunter
2011-06-01 10:30 ` ajh mls
2011-06-03 9:41 ` Adrian Hunter
0 siblings, 2 replies; 6+ messages in thread
From: Adrian Hunter @ 2011-06-01 10:07 UTC (permalink / raw)
To: dave; +Cc: chris.mason, linux-btrfs
On 01/06/11 11:54, David Sterba wrote:
> On Tue, May 31, 2011 at 10:03:12AM +0300, Adrian Hunter wrote:
>> Hi
>>
>> I seem to be able to get btrfs reproducibly to
>> produce warnings and finally hang when running
>> a stress test on a ramdisk.
>>
>> Testing was done using the "integration-test"
>> branch of btrfs-unstable. Note that I also tested
>> v2.6.39 and "integration-test" took much longer to
>> hang i.e. it is an improvement
>>
>> The test script and stack dumps are below.
>>
>> Is this a valid test?
>>
>> Is it worth me investigating these?
>
> I've tried to reproduce myself, but the fsstress utility (taken from
> latest LTP suite) crashes sometimes and I cannot take it as a proper
> reproduction. Can you point me to the exact version you used?
The LTP version does not compile properly:
make[4]: Entering directory
`/home/ahunter/Desktop/Projects/ltp/ltp-full-20110228/testcases/kernel/fs/fsstress'
gcc -g -O2 -g -O2 -fno-strict-aliasing -pipe -Wall -DNO_XFS
-I/home/ahunter/Desktop/Projects/ltp/ltp-full-20110228/testcases/kernel/fs/fsstress
-D_LARGEFILE64_SOURCE -D_GNU_SOURCE -Wno-error -I../../../../include
-I../../../../include -L../../../../lib fsstress.c -o fsstress
fsstress.c: In function 'dread_f':
fsstress.c:1829:2: warning: implicit declaration of function 'memalign'
fsstress.c:1829:6: warning: assignment makes pointer from integer
without a cast
fsstress.c: In function 'dwrite_f':
fsstress.c:1912:6: warning: assignment makes pointer from integer
without a cast
fsstress.c:1844:17: warning: 'diob.d_miniosz' may be used uninitialized
in this function
fsstress.c:1844:17: warning: 'diob.d_maxiosz' may be used uninitialized
in this function
fsstress.c:1844:17: warning: 'diob.d_mem' may be used uninitialized in
this function
fsstress.c: In function 'dread_f':
fsstress.c:1750:17: warning: 'diob.d_miniosz' may be used uninitialized
in this function
fsstress.c:1750:17: warning: 'diob.d_maxiosz' may be used uninitialized
in this function
fsstress.c:1750:17: warning: 'diob.d_mem' may be used uninitialized in
this function
I hacked a couple of changes but I need to check them before
mailing to the ltp-list:
From: Adrian Hunter <adrian.hunter@intel.com>
Date: Wed, 1 Jun 2011 13:01:48 +0300
Subject: [PATCH] fsstress: quick fix for compile errors
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
---
testcases/kernel/fs/fsstress/fsstress.c | 2 ++
testcases/kernel/fs/fsstress/global.h | 1 +
2 files changed, 3 insertions(+), 0 deletions(-)
diff --git a/testcases/kernel/fs/fsstress/fsstress.c
b/testcases/kernel/fs/fsstress/fsstress.c
index e3b48ea..83c23ed 100644
--- a/testcases/kernel/fs/fsstress/fsstress.c
+++ b/testcases/kernel/fs/fsstress/fsstress.c
@@ -1757,6 +1757,7 @@ dread_f(int opno, long r)
struct stat64 stb;
int v;
+ memset(&diob, 0, sizeof(struct dioattr));
init_pathname(&f);
if (!get_fname(FT_REGFILE, r, &f, NULL, NULL, &v)) {
if (v)
@@ -1851,6 +1852,7 @@ dwrite_f(int opno, long r)
struct stat64 stb;
int v;
+ memset(&diob, 0, sizeof(struct dioattr));
init_pathname(&f);
if (!get_fname(FT_REGFILE, r, &f, NULL, NULL, &v)) {
if (v)
diff --git a/testcases/kernel/fs/fsstress/global.h
b/testcases/kernel/fs/fsstress/global.h
index f788395..5ab5d56 100644
--- a/testcases/kernel/fs/fsstress/global.h
+++ b/testcases/kernel/fs/fsstress/global.h
@@ -58,6 +58,7 @@
#include <stdlib.h>
#include <stdio.h>
#include <unistd.h>
+#include <malloc.h>
#ifndef O_DIRECT
#define O_DIRECT 040000
--
1.7.4.4
> (But no warning or hang observed, on top of 3.0-rc1 + cmason/for-linus)
I will try it tonight.
^ permalink raw reply related [flat|nested] 6+ messages in thread
* Re: btrfs hang on brd
2011-06-01 10:07 ` Adrian Hunter
@ 2011-06-01 10:30 ` ajh mls
2011-06-03 9:41 ` Adrian Hunter
1 sibling, 0 replies; 6+ messages in thread
From: ajh mls @ 2011-06-01 10:30 UTC (permalink / raw)
To: dave; +Cc: chris.mason, linux-btrfs
On 01/06/11 13:07, Adrian Hunter wrote:
> On 01/06/11 11:54, David Sterba wrote:
>> On Tue, May 31, 2011 at 10:03:12AM +0300, Adrian Hunter wrote:
>>> Hi
>>>
>>> I seem to be able to get btrfs reproducibly to
>>> produce warnings and finally hang when running
>>> a stress test on a ramdisk.
>>>
>>> Testing was done using the "integration-test"
>>> branch of btrfs-unstable. Note that I also tested
>>> v2.6.39 and "integration-test" took much longer to
>>> hang i.e. it is an improvement
>>>
>>> The test script and stack dumps are below.
>>>
>>> Is this a valid test?
>>>
>>> Is it worth me investigating these?
>>
>> I've tried to reproduce myself, but the fsstress utility (taken from
>> latest LTP suite) crashes sometimes and I cannot take it as a proper
>> reproduction. Can you point me to the exact version you used?
>
> The LTP version does not compile properly:
>
> make[4]: Entering directory
> `/home/ahunter/Desktop/Projects/ltp/ltp-full-20110228/testcases/kernel/fs/fsstress'
>
> gcc -g -O2 -g -O2 -fno-strict-aliasing -pipe -Wall -DNO_XFS
> -I/home/ahunter/Desktop/Projects/ltp/ltp-full-20110228/testcases/kernel/fs/fsstress
> -D_LARGEFILE64_SOURCE -D_GNU_SOURCE -Wno-error -I../../../../include
> -I../../../../include -L../../../../lib fsstress.c -o fsstress
> fsstress.c: In function 'dread_f':
> fsstress.c:1829:2: warning: implicit declaration of function 'memalign'
> fsstress.c:1829:6: warning: assignment makes pointer from integer
> without a cast
> fsstress.c: In function 'dwrite_f':
> fsstress.c:1912:6: warning: assignment makes pointer from integer
> without a cast
> fsstress.c:1844:17: warning: 'diob.d_miniosz' may be used uninitialized
> in this function
> fsstress.c:1844:17: warning: 'diob.d_maxiosz' may be used uninitialized
> in this function
> fsstress.c:1844:17: warning: 'diob.d_mem' may be used uninitialized in
> this function
> fsstress.c: In function 'dread_f':
> fsstress.c:1750:17: warning: 'diob.d_miniosz' may be used uninitialized
> in this function
> fsstress.c:1750:17: warning: 'diob.d_maxiosz' may be used uninitialized
> in this function
> fsstress.c:1750:17: warning: 'diob.d_mem' may be used uninitialized in
> this function
>
>
> I hacked a couple of changes but I need to check them before
> mailing to the ltp-list:
>
In fact there is already a fix here:
http://sourceforge.net/mailarchive/message.php?msg_id=27212868
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: btrfs hang on brd
2011-06-01 10:07 ` Adrian Hunter
2011-06-01 10:30 ` ajh mls
@ 2011-06-03 9:41 ` Adrian Hunter
2011-06-07 5:35 ` Adrian Hunter
1 sibling, 1 reply; 6+ messages in thread
From: Adrian Hunter @ 2011-06-03 9:41 UTC (permalink / raw)
To: dave; +Cc: chris.mason, linux-btrfs
On 01/06/11 13:07, Adrian Hunter wrote:
> On 01/06/11 11:54, David Sterba wrote:
>> On Tue, May 31, 2011 at 10:03:12AM +0300, Adrian Hunter wrote:
>>> Hi
>>>
>>> I seem to be able to get btrfs reproducibly to
>>> produce warnings and finally hang when running
>>> a stress test on a ramdisk.
>>>
>>> Testing was done using the "integration-test"
>>> branch of btrfs-unstable. Note that I also tested
>>> v2.6.39 and "integration-test" took much longer to
>>> hang i.e. it is an improvement
>>>
>>> The test script and stack dumps are below.
>>>
>>> Is this a valid test?
>>>
>>> Is it worth me investigating these?
>>
>> I've tried to reproduce myself, but the fsstress utility (taken from
>> latest LTP suite) crashes sometimes and I cannot take it as a proper
>> reproduction. Can you point me to the exact version you used?
>
> The LTP version does not compile properly:
>
> make[4]: Entering directory
> `/home/ahunter/Desktop/Projects/ltp/ltp-full-20110228/testcases/kernel/fs/fsstress'
>
> gcc -g -O2 -g -O2 -fno-strict-aliasing -pipe -Wall -DNO_XFS
> -I/home/ahunter/Desktop/Projects/ltp/ltp-full-20110228/testcases/kernel/fs/fsstress
> -D_LARGEFILE64_SOURCE -D_GNU_SOURCE -Wno-error -I../../../../include
> -I../../../../include -L../../../../lib fsstress.c -o fsstress
> fsstress.c: In function 'dread_f':
> fsstress.c:1829:2: warning: implicit declaration of function 'memalign'
> fsstress.c:1829:6: warning: assignment makes pointer from integer
> without a cast
> fsstress.c: In function 'dwrite_f':
> fsstress.c:1912:6: warning: assignment makes pointer from integer
> without a cast
> fsstress.c:1844:17: warning: 'diob.d_miniosz' may be used uninitialized
> in this function
> fsstress.c:1844:17: warning: 'diob.d_maxiosz' may be used uninitialized
> in this function
> fsstress.c:1844:17: warning: 'diob.d_mem' may be used uninitialized in
> this function
> fsstress.c: In function 'dread_f':
> fsstress.c:1750:17: warning: 'diob.d_miniosz' may be used uninitialized
> in this function
> fsstress.c:1750:17: warning: 'diob.d_maxiosz' may be used uninitialized
> in this function
> fsstress.c:1750:17: warning: 'diob.d_mem' may be used uninitialized in
> this function
>
>
> I hacked a couple of changes but I need to check them before
> mailing to the ltp-list:
>
>
> From: Adrian Hunter <adrian.hunter@intel.com>
> Date: Wed, 1 Jun 2011 13:01:48 +0300
> Subject: [PATCH] fsstress: quick fix for compile errors
>
> Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
> ---
> testcases/kernel/fs/fsstress/fsstress.c | 2 ++
> testcases/kernel/fs/fsstress/global.h | 1 +
> 2 files changed, 3 insertions(+), 0 deletions(-)
>
> diff --git a/testcases/kernel/fs/fsstress/fsstress.c
> b/testcases/kernel/fs/fsstress/fsstress.c
> index e3b48ea..83c23ed 100644
> --- a/testcases/kernel/fs/fsstress/fsstress.c
> +++ b/testcases/kernel/fs/fsstress/fsstress.c
> @@ -1757,6 +1757,7 @@ dread_f(int opno, long r)
> struct stat64 stb;
> int v;
>
> + memset(&diob, 0, sizeof(struct dioattr));
> init_pathname(&f);
> if (!get_fname(FT_REGFILE, r, &f, NULL, NULL, &v)) {
> if (v)
> @@ -1851,6 +1852,7 @@ dwrite_f(int opno, long r)
> struct stat64 stb;
> int v;
>
> + memset(&diob, 0, sizeof(struct dioattr));
> init_pathname(&f);
> if (!get_fname(FT_REGFILE, r, &f, NULL, NULL, &v)) {
> if (v)
> diff --git a/testcases/kernel/fs/fsstress/global.h
> b/testcases/kernel/fs/fsstress/global.h
> index f788395..5ab5d56 100644
> --- a/testcases/kernel/fs/fsstress/global.h
> +++ b/testcases/kernel/fs/fsstress/global.h
> @@ -58,6 +58,7 @@
> #include <stdlib.h>
> #include <stdio.h>
> #include <unistd.h>
> +#include <malloc.h>
>
> #ifndef O_DIRECT
> #define O_DIRECT 040000
> --
> 1.7.4.4
>
>
>> (But no warning or hang observed, on top of 3.0-rc1 + cmason/for-linus)
>
> I will try it tonight.
No improvement on 3.0-rc1+ (commit
5c6cce92bc8aee751aafe82c5d9caf7553226a3d).
Logs follow:
Warnings
--------
[ 2857.023360] WARNING: at fs/btrfs/extent-tree.c:5648
btrfs_alloc_free_block+0x14e/0x357 [btrfs]()
[ 2857.023364] Hardware name: XPS 8300
[ 2857.023367] Modules linked in: tun btrfs zlib_deflate libcrc32c brd
fuse cpufreq_ondemand acpi_cpufreq freq_table mperf ip6t_REJECT
nf_conntrack_ipv6 nf_defrag_ipv6 ip6table_filter ip6_tables ipv6 uinput
snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_intel snd_hda_codec
snd_hwdep snd_seq snd_seq_device broadcom snd_pcm snd_timer snd tg3
iTCO_wdt serio_raw dcdbas iTCO_vendor_support microcode soundcore pcspkr
snd_page_alloc i2c_i801 joydev usb_storage i915 drm_kms_helper drm
i2c_algo_bit i2c_core video [last unloaded: scsi_wait_scan]
[ 2857.023431] Pid: 8809, comm: btrfs-endio-wri Not tainted
3.0.0-rc1-work-2011-06-01-01+ #11
[ 2857.023435] Call Trace:
[ 2857.023461] [<ffffffff8104db2e>] warn_slowpath_common+0x85/0x9d
[ 2857.023471] [<ffffffff8104db60>] warn_slowpath_null+0x1a/0x1c
[ 2857.023494] [<ffffffffa029cc98>] btrfs_alloc_free_block+0x14e/0x357
[btrfs]
[ 2857.023526] [<ffffffffa02c75bb>] ?
map_private_extent_buffer+0xb1/0xd5 [btrfs]
[ 2857.023547] [<ffffffffa028f99f>] __btrfs_cow_block+0x102/0x31e [btrfs]
[ 2857.023565] [<ffffffffa028e500>] ? unlock_up+0xd9/0xe4 [btrfs]
[ 2857.023585] [<ffffffffa028fcbf>] btrfs_cow_block+0x104/0x14e [btrfs]
[ 2857.023604] [<ffffffffa0292aa0>] btrfs_search_slot+0x162/0x502 [btrfs]
[ 2857.023625] [<ffffffffa0293d46>] btrfs_insert_empty_items+0x6a/0xba
[btrfs]
[ 2857.023636] [<ffffffff81110422>] ? kmem_cache_alloc+0x29/0xf7
[ 2857.023658] [<ffffffffa02adb39>]
insert_reserved_file_extent.clone.34+0xad/0x1fc [btrfs]
[ 2857.023680] [<ffffffffa02c4708>] ? lock_extent_bits+0x5e/0xa8 [btrfs]
[ 2857.023701] [<ffffffffa02b0772>]
btrfs_endio_direct_write+0x171/0x29a [btrfs]
[ 2857.023719] [<ffffffffa02a3afa>] ? end_workqueue_fn+0xf6/0x10e [btrfs]
[ 2857.023728] [<ffffffff81143d1c>] bio_endio+0x2d/0x2f
[ 2857.023744] [<ffffffffa02a3b05>] end_workqueue_fn+0x101/0x10e [btrfs]
[ 2857.023766] [<ffffffffa02cde4d>] worker_loop+0x193/0x4ca [btrfs]
[ 2857.023786] [<ffffffffa02cdcba>] ? btrfs_queue_worker+0x214/0x214
[btrfs]
[ 2857.023793] [<ffffffff81068f4e>] kthread+0x82/0x8a
[ 2857.023801] [<ffffffff81483664>] kernel_thread_helper+0x4/0x10
[ 2857.023807] [<ffffffff81068ecc>] ? kthread_worker_fn+0x14b/0x14b
[ 2857.023813] [<ffffffff81483660>] ? gs_change+0x13/0x13
[ 2857.023818] ---[ end trace 11fa90e2fd0455a5 ]---
[ 2857.023835] ------------[ cut here ]------------
[ 2857.023851] WARNING: at fs/btrfs/extent-tree.c:5648
btrfs_alloc_free_block+0x14e/0x357 [btrfs]()
[ 2857.023856] Hardware name: XPS 8300
[ 2857.023859] Modules linked in: tun btrfs zlib_deflate libcrc32c brd
fuse cpufreq_ondemand acpi_cpufreq freq_table mperf ip6t_REJECT
nf_conntrack_ipv6 nf_defrag_ipv6 ip6table_filter ip6_tables ipv6 uinput
snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_intel snd_hda_codec
snd_hwdep snd_seq snd_seq_device broadcom snd_pcm snd_timer snd tg3
iTCO_wdt serio_raw dcdbas iTCO_vendor_support microcode soundcore pcspkr
snd_page_alloc i2c_i801 joydev usb_storage i915 drm_kms_helper drm
i2c_algo_bit i2c_core video [last unloaded: scsi_wait_scan]
[ 2857.023948] Pid: 8833, comm: btrfs-endio-wri Tainted: G W
3.0.0-rc1-work-2011-06-01-01+ #11
[ 2857.023953] Call Trace:
[ 2857.023959] [<ffffffff8104db2e>] warn_slowpath_common+0x85/0x9d
[ 2857.023966] [<ffffffff8104db60>] warn_slowpath_null+0x1a/0x1c
[ 2857.023982] [<ffffffffa029cc98>] btrfs_alloc_free_block+0x14e/0x357
[btrfs]
[ 2857.023989] [<ffffffff81041344>] ?
update_stats_wait_end.clone.74+0x6a/0xad
[ 2857.024002] [<ffffffffa028f99f>] __btrfs_cow_block+0x102/0x31e [btrfs]
[ 2857.024015] [<ffffffffa028e500>] ? unlock_up+0xd9/0xe4 [btrfs]
[ 2857.024028] [<ffffffffa028fcbf>] btrfs_cow_block+0x104/0x14e [btrfs]
[ 2857.024049] [<ffffffffa02d295e>] ? btrfs_spin_on_block+0x55/0x55 [btrfs]
[ 2857.024062] [<ffffffffa0292aa0>] btrfs_search_slot+0x162/0x502 [btrfs]
[ 2857.024068] [<ffffffff8110f8e8>] ?
slab_pre_alloc_hook.clone.33+0x2d/0x31
[ 2857.024086] [<ffffffffa02a0e16>] btrfs_lookup_file_extent+0x3c/0x3e
[btrfs]
[ 2857.024099] [<ffffffffa028f13c>] ? btrfs_alloc_path+0x1a/0x2b [btrfs]
[ 2857.024119] [<ffffffffa02b684d>] btrfs_drop_extents+0x10e/0x731 [btrfs]
[ 2857.024127] [<ffffffff8103d050>] ? need_resched+0x23/0x2d
[ 2857.024134] [<ffffffff8147a88e>] ? _cond_resched+0xe/0x22
[ 2857.024140] [<ffffffff8110f8e8>] ?
slab_pre_alloc_hook.clone.33+0x2d/0x31
[ 2857.024146] [<ffffffff81110422>] ? kmem_cache_alloc+0x29/0xf7
[ 2857.024165] [<ffffffffa02adafc>]
insert_reserved_file_extent.clone.34+0x70/0x1fc [btrfs]
[ 2857.024187] [<ffffffffa02c4708>] ? lock_extent_bits+0x5e/0xa8 [btrfs]
[ 2857.024206] [<ffffffffa02b0772>]
btrfs_endio_direct_write+0x171/0x29a [btrfs]
[ 2857.024225] [<ffffffffa02a3afa>] ? end_workqueue_fn+0xf6/0x10e [btrfs]
[ 2857.024232] [<ffffffff81143d1c>] bio_endio+0x2d/0x2f
[ 2857.024248] [<ffffffffa02a3b05>] end_workqueue_fn+0x101/0x10e [btrfs]
[ 2857.024269] [<ffffffffa02cde4d>] worker_loop+0x193/0x4ca [btrfs]
[ 2857.024289] [<ffffffffa02cdcba>] ? btrfs_queue_worker+0x214/0x214
[btrfs]
[ 2857.024295] [<ffffffff81068f4e>] kthread+0x82/0x8a
[ 2857.024301] [<ffffffff81483664>] kernel_thread_helper+0x4/0x10
[ 2857.024308] [<ffffffff81068ecc>] ? kthread_worker_fn+0x14b/0x14b
[ 2857.024314] [<ffffffff81483660>] ? gs_change+0x13/0x13
[ 2857.024318] ---[ end trace 11fa90e2fd0455a6 ]---
[ 2857.024374] ------------[ cut here ]------------
[ 2857.024390] WARNING: at fs/btrfs/extent-tree.c:5648
btrfs_alloc_free_block+0x14e/0x357 [btrfs]()
[ 2857.024395] Hardware name: XPS 8300
[ 2857.024398] Modules linked in: tun btrfs zlib_deflate libcrc32c brd
fuse cpufreq_ondemand acpi_cpufreq freq_table mperf ip6t_REJECT
nf_conntrack_ipv6 nf_defrag_ipv6 ip6table_filter ip6_tables ipv6 uinput
snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_intel snd_hda_codec
snd_hwdep snd_seq snd_seq_device broadcom snd_pcm snd_timer snd tg3
iTCO_wdt serio_raw dcdbas iTCO_vendor_support microcode soundcore pcspkr
snd_page_alloc i2c_i801 joydev usb_storage i915 drm_kms_helper drm
i2c_algo_bit i2c_core video [last unloaded: scsi_wait_scan]
[ 2857.024483] Pid: 8809, comm: btrfs-endio-wri Tainted: G W
3.0.0-rc1-work-2011-06-01-01+ #11
[ 2857.024487] Call Trace:
[ 2857.024494] [<ffffffff8104db2e>] warn_slowpath_common+0x85/0x9d
[ 2857.024501] [<ffffffff8104db60>] warn_slowpath_null+0x1a/0x1c
[ 2857.024517] [<ffffffffa029cc98>] btrfs_alloc_free_block+0x14e/0x357
[btrfs]
[ 2857.024538] [<ffffffffa02c397e>] ? merge_state+0xa6/0x11a [btrfs]
[ 2857.024546] [<ffffffff8122aef8>] ? rb_insert_color+0xb8/0xe1
[ 2857.024559] [<ffffffffa028f99f>] __btrfs_cow_block+0x102/0x31e [btrfs]
[ 2857.024579] [<ffffffffa02c7693>] ? unmap_extent_buffer+0xe/0x10 [btrfs]
[ 2857.024592] [<ffffffffa028e500>] ? unlock_up+0xd9/0xe4 [btrfs]
[ 2857.024604] [<ffffffffa028fcbf>] btrfs_cow_block+0x104/0x14e [btrfs]
[ 2857.024617] [<ffffffffa02920b4>] push_leaf_right+0xc4/0x142 [btrfs]
[ 2857.024635] [<ffffffffa02c764b>] ? map_extent_buffer+0x6c/0xa6 [btrfs]
[ 2857.024649] [<ffffffffa0292267>] split_leaf+0x84/0x53c [btrfs]
[ 2857.024661] [<ffffffffa028e297>] ? btrfs_item_offset_nr+0x19/0x1b
[btrfs]
[ 2857.024673] [<ffffffffa028e569>] ? leaf_space_used+0x5e/0x86 [btrfs]
[ 2857.024686] [<ffffffffa0292d87>] btrfs_search_slot+0x449/0x502 [btrfs]
[ 2857.024700] [<ffffffffa0293d46>] btrfs_insert_empty_items+0x6a/0xba
[btrfs]
[ 2857.024707] [<ffffffff81110422>] ? kmem_cache_alloc+0x29/0xf7
[ 2857.024727] [<ffffffffa02adb39>]
insert_reserved_file_extent.clone.34+0xad/0x1fc [btrfs]
[ 2857.024747] [<ffffffffa02c4708>] ? lock_extent_bits+0x5e/0xa8 [btrfs]
[ 2857.024767] [<ffffffffa02b0772>]
btrfs_endio_direct_write+0x171/0x29a [btrfs]
[ 2857.024785] [<ffffffffa02a3afa>] ? end_workqueue_fn+0xf6/0x10e [btrfs]
[ 2857.024792] [<ffffffff81143d1c>] bio_endio+0x2d/0x2f
[ 2857.024808] [<ffffffffa02a3b05>] end_workqueue_fn+0x101/0x10e [btrfs]
[ 2857.024828] [<ffffffffa02cde4d>] worker_loop+0x193/0x4ca [btrfs]
[ 2857.024848] [<ffffffffa02cdcba>] ? btrfs_queue_worker+0x214/0x214
[btrfs]
[ 2857.024855] [<ffffffff81068f4e>] kthread+0x82/0x8a
[ 2857.024861] [<ffffffff81483664>] kernel_thread_helper+0x4/0x10
[ 2857.024868] [<ffffffff81068ecc>] ? kthread_worker_fn+0x14b/0x14b
[ 2857.024875] [<ffffffff81483660>] ? gs_change+0x13/0x13
[ 2857.024879] ---[ end trace 11fa90e2fd0455a7 ]---
[ 2857.024915] ------------[ cut here ]------------
[ 2857.024936] WARNING: at fs/btrfs/extent-tree.c:5648
btrfs_alloc_free_block+0x14e/0x357 [btrfs]()
[ 2857.024941] Hardware name: XPS 8300
[ 2857.024944] Modules linked in: tun btrfs zlib_deflate libcrc32c brd
fuse cpufreq_ondemand acpi_cpufreq freq_table mperf ip6t_REJECT
nf_conntrack_ipv6 nf_defrag_ipv6 ip6table_filter ip6_tables ipv6 uinput
snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_intel snd_hda_codec
snd_hwdep snd_seq snd_seq_device broadcom snd_pcm snd_timer snd tg3
iTCO_wdt serio_raw dcdbas iTCO_vendor_support microcode soundcore pcspkr
snd_page_alloc i2c_i801 joydev usb_storage i915 drm_kms_helper drm
i2c_algo_bit i2c_core video [last unloaded: scsi_wait_scan]
[ 2857.025029] Pid: 8833, comm: btrfs-endio-wri Tainted: G W
3.0.0-rc1-work-2011-06-01-01+ #11
[ 2857.025034] Call Trace:
[ 2857.025043] [<ffffffff8104db2e>] warn_slowpath_common+0x85/0x9d
[ 2857.025050] [<ffffffff8104db60>] warn_slowpath_null+0x1a/0x1c
[ 2857.025066] [<ffffffffa029cc98>] btrfs_alloc_free_block+0x14e/0x357
[btrfs]
[ 2857.025080] [<ffffffffa028f99f>] __btrfs_cow_block+0x102/0x31e [btrfs]
[ 2857.025093] [<ffffffffa028e500>] ? unlock_up+0xd9/0xe4 [btrfs]
[ 2857.025106] [<ffffffffa028fcbf>] btrfs_cow_block+0x104/0x14e [btrfs]
[ 2857.025120] [<ffffffffa0292aa0>] btrfs_search_slot+0x162/0x502 [btrfs]
[ 2857.025138] [<ffffffffa02a0e16>] btrfs_lookup_file_extent+0x3c/0x3e
[btrfs]
[ 2857.025150] [<ffffffffa028f13c>] ? btrfs_alloc_path+0x1a/0x2b [btrfs]
[ 2857.025172] [<ffffffffa02b684d>] btrfs_drop_extents+0x10e/0x731 [btrfs]
[ 2857.025179] [<ffffffff8103d050>] ? need_resched+0x23/0x2d
[ 2857.025188] [<ffffffff8147a88e>] ? _cond_resched+0xe/0x22
[ 2857.025196] [<ffffffff8110f8e8>] ?
slab_pre_alloc_hook.clone.33+0x2d/0x31
[ 2857.025205] [<ffffffff81110422>] ? kmem_cache_alloc+0x29/0xf7
[ 2857.025231] [<ffffffffa02adafc>]
insert_reserved_file_extent.clone.34+0x70/0x1fc [btrfs]
[ 2857.025255] [<ffffffffa02c4708>] ? lock_extent_bits+0x5e/0xa8 [btrfs]
[ 2857.025278] [<ffffffffa02b0772>]
btrfs_endio_direct_write+0x171/0x29a [btrfs]
[ 2857.025304] [<ffffffffa02a3afa>] ? end_workqueue_fn+0xf6/0x10e [btrfs]
[ 2857.025313] [<ffffffff81143d1c>] bio_endio+0x2d/0x2f
[ 2857.025336] [<ffffffffa02a3b05>] end_workqueue_fn+0x101/0x10e [btrfs]
[ 2857.025366] [<ffffffffa02cde4d>] worker_loop+0x193/0x4ca [btrfs]
[ 2857.025387] [<ffffffffa02cdcba>] ? btrfs_queue_worker+0x214/0x214
[btrfs]
[ 2857.025393] [<ffffffff81068f4e>] kthread+0x82/0x8a
[ 2857.025400] [<ffffffff81483664>] kernel_thread_helper+0x4/0x10
[ 2857.025406] [<ffffffff81068ecc>] ? kthread_worker_fn+0x14b/0x14b
[ 2857.025413] [<ffffffff81483660>] ? gs_change+0x13/0x13
[ 2857.025417] ---[ end trace 11fa90e2fd0455a8 ]---
[ 2857.025527] ------------[ cut here ]------------
[ 2857.025544] WARNING: at fs/btrfs/extent-tree.c:5648
btrfs_alloc_free_block+0x14e/0x357 [btrfs]()
[ 2857.025549] Hardware name: XPS 8300
[ 2857.025552] Modules linked in: tun btrfs zlib_deflate libcrc32c brd
fuse cpufreq_ondemand acpi_cpufreq freq_table mperf ip6t_REJECT
nf_conntrack_ipv6 nf_defrag_ipv6 ip6table_filter ip6_tables ipv6 uinput
snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_intel snd_hda_codec
snd_hwdep snd_seq snd_seq_device broadcom snd_pcm snd_timer snd tg3
iTCO_wdt serio_raw dcdbas iTCO_vendor_support microcode soundcore pcspkr
snd_page_alloc i2c_i801 joydev usb_storage i915 drm_kms_helper drm
i2c_algo_bit i2c_core video [last unloaded: scsi_wait_scan]
[ 2857.025633] Pid: 8833, comm: btrfs-endio-wri Tainted: G W
3.0.0-rc1-work-2011-06-01-01+ #11
[ 2857.025638] Call Trace:
[ 2857.025645] [<ffffffff8104db2e>] warn_slowpath_common+0x85/0x9d
[ 2857.025653] [<ffffffff8104db60>] warn_slowpath_null+0x1a/0x1c
[ 2857.025668] [<ffffffffa029cc98>] btrfs_alloc_free_block+0x14e/0x357
[btrfs]
[ 2857.025675] [<ffffffff81041616>] ? dequeue_task_fair+0x1ca/0x1d9
[ 2857.025688] [<ffffffffa028f99f>] __btrfs_cow_block+0x102/0x31e [btrfs]
[ 2857.025700] [<ffffffffa028e500>] ? unlock_up+0xd9/0xe4 [btrfs]
[ 2857.025713] [<ffffffffa028fcbf>] btrfs_cow_block+0x104/0x14e [btrfs]
[ 2857.025734] [<ffffffffa02d295e>] ? btrfs_spin_on_block+0x55/0x55 [btrfs]
[ 2857.025754] [<ffffffffa0292aa0>] btrfs_search_slot+0x162/0x502 [btrfs]
[ 2857.025763] [<ffffffff8110f8e8>] ?
slab_pre_alloc_hook.clone.33+0x2d/0x31
[ 2857.025788] [<ffffffffa02a0e16>] btrfs_lookup_file_extent+0x3c/0x3e
[btrfs]
[ 2857.025803] [<ffffffffa028f13c>] ? btrfs_alloc_path+0x1a/0x2b [btrfs]
[ 2857.025824] [<ffffffffa02b684d>] btrfs_drop_extents+0x10e/0x731 [btrfs]
[ 2857.025830] [<ffffffff8103d050>] ? need_resched+0x23/0x2d
[ 2857.025836] [<ffffffff8147a88e>] ? _cond_resched+0xe/0x22
[ 2857.025842] [<ffffffff8110f8e8>] ?
slab_pre_alloc_hook.clone.33+0x2d/0x31
[ 2857.025848] [<ffffffff81110422>] ? kmem_cache_alloc+0x29/0xf7
[ 2857.025867] [<ffffffffa02adafc>]
insert_reserved_file_extent.clone.34+0x70/0x1fc [btrfs]
[ 2857.025889] [<ffffffffa02c4708>] ? lock_extent_bits+0x5e/0xa8 [btrfs]
[ 2857.025909] [<ffffffffa02b0772>]
btrfs_endio_direct_write+0x171/0x29a [btrfs]
[ 2857.025926] [<ffffffffa02a3afa>] ? end_workqueue_fn+0xf6/0x10e [btrfs]
[ 2857.025933] [<ffffffff81143d1c>] bio_endio+0x2d/0x2f
[ 2857.025949] [<ffffffffa02a3b05>] end_workqueue_fn+0x101/0x10e [btrfs]
[ 2857.025979] [<ffffffffa02cde4d>] worker_loop+0x193/0x4ca [btrfs]
[ 2857.026006] [<ffffffffa02cdcba>] ? btrfs_queue_worker+0x214/0x214
[btrfs]
[ 2857.026012] [<ffffffff81068f4e>] kthread+0x82/0x8a
[ 2857.026018] [<ffffffff81483664>] kernel_thread_helper+0x4/0x10
[ 2857.026022] [<ffffffff81068ecc>] ? kthread_worker_fn+0x14b/0x14b
[ 2857.026027] [<ffffffff81483660>] ? gs_change+0x13/0x13
[ 2857.026030] ---[ end trace 11fa90e2fd0455a9 ]---
[ 2857.026053] ------------[ cut here ]------------
[ 2857.026067] WARNING: at fs/btrfs/extent-tree.c:5648
btrfs_alloc_free_block+0x14e/0x357 [btrfs]()
[ 2857.026070] Hardware name: XPS 8300
[ 2857.026072] Modules linked in: tun btrfs zlib_deflate libcrc32c brd
fuse cpufreq_ondemand acpi_cpufreq freq_table mperf ip6t_REJECT
nf_conntrack_ipv6 nf_defrag_ipv6 ip6table_filter ip6_tables ipv6 uinput
snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_intel snd_hda_codec
snd_hwdep snd_seq snd_seq_device broadcom snd_pcm snd_timer snd tg3
iTCO_wdt serio_raw dcdbas iTCO_vendor_support microcode soundcore pcspkr
snd_page_alloc i2c_i801 joydev usb_storage i915 drm_kms_helper drm
i2c_algo_bit i2c_core video [last unloaded: scsi_wait_scan]
[ 2857.026112] Pid: 8833, comm: btrfs-endio-wri Tainted: G W
3.0.0-rc1-work-2011-06-01-01+ #11
[ 2857.026114] Call Trace:
[ 2857.026119] [<ffffffff8104db2e>] warn_slowpath_common+0x85/0x9d
[ 2857.026124] [<ffffffff8104db60>] warn_slowpath_null+0x1a/0x1c
[ 2857.026138] [<ffffffffa029cc98>] btrfs_alloc_free_block+0x14e/0x357
[btrfs]
[ 2857.026156] [<ffffffffa02c75bb>] ?
map_private_extent_buffer+0xb1/0xd5 [btrfs]
[ 2857.026167] [<ffffffffa028f99f>] __btrfs_cow_block+0x102/0x31e [btrfs]
[ 2857.026178] [<ffffffffa028e500>] ? unlock_up+0xd9/0xe4 [btrfs]
[ 2857.026188] [<ffffffffa028fcbf>] btrfs_cow_block+0x104/0x14e [btrfs]
[ 2857.026199] [<ffffffffa0292aa0>] btrfs_search_slot+0x162/0x502 [btrfs]
[ 2857.026215] [<ffffffffa02a0e16>] btrfs_lookup_file_extent+0x3c/0x3e
[btrfs]
[ 2857.026225] [<ffffffffa028f13c>] ? btrfs_alloc_path+0x1a/0x2b [btrfs]
[ 2857.026243] [<ffffffffa02b684d>] btrfs_drop_extents+0x10e/0x731 [btrfs]
[ 2857.026250] [<ffffffff8103d050>] ? need_resched+0x23/0x2d
[ 2857.026256] [<ffffffff8147a88e>] ? _cond_resched+0xe/0x22
[ 2857.026262] [<ffffffff8110f8e8>] ?
slab_pre_alloc_hook.clone.33+0x2d/0x31
[ 2857.026268] [<ffffffff81110422>] ? kmem_cache_alloc+0x29/0xf7
[ 2857.026287] [<ffffffffa02adafc>]
insert_reserved_file_extent.clone.34+0x70/0x1fc [btrfs]
[ 2857.026309] [<ffffffffa02c4708>] ? lock_extent_bits+0x5e/0xa8 [btrfs]
[ 2857.026328] [<ffffffffa02b0772>]
btrfs_endio_direct_write+0x171/0x29a [btrfs]
[ 2857.026347] [<ffffffffa02a3afa>] ? end_workqueue_fn+0xf6/0x10e [btrfs]
[ 2857.026354] [<ffffffff81143d1c>] bio_endio+0x2d/0x2f
[ 2857.026370] [<ffffffffa02a3b05>] end_workqueue_fn+0x101/0x10e [btrfs]
[ 2857.026390] [<ffffffffa02cde4d>] worker_loop+0x193/0x4ca [btrfs]
[ 2857.026410] [<ffffffffa02cdcba>] ? btrfs_queue_worker+0x214/0x214
[btrfs]
[ 2857.026415] [<ffffffff81068f4e>] kthread+0x82/0x8a
[ 2857.026422] [<ffffffff81483664>] kernel_thread_helper+0x4/0x10
[ 2857.026428] [<ffffffff81068ecc>] ? kthread_worker_fn+0x14b/0x14b
[ 2857.026444] [<ffffffff81483660>] ? gs_change+0x13/0x13
[ 2857.026448] ---[ end trace 11fa90e2fd0455aa ]---
[ 2857.026481] ------------[ cut here ]------------
[ 2857.026497] WARNING: at fs/btrfs/extent-tree.c:5648
btrfs_alloc_free_block+0x14e/0x357 [btrfs]()
[ 2857.026502] Hardware name: XPS 8300
[ 2857.026505] Modules linked in: tun btrfs zlib_deflate libcrc32c brd
fuse cpufreq_ondemand acpi_cpufreq freq_table mperf ip6t_REJECT
nf_conntrack_ipv6 nf_defrag_ipv6 ip6table_filter ip6_tables ipv6 uinput
snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_intel snd_hda_codec
snd_hwdep snd_seq snd_seq_device broadcom snd_pcm snd_timer snd tg3
iTCO_wdt serio_raw dcdbas iTCO_vendor_support microcode soundcore pcspkr
snd_page_alloc i2c_i801 joydev usb_storage i915 drm_kms_helper drm
i2c_algo_bit i2c_core video [last unloaded: scsi_wait_scan]
[ 2857.026584] Pid: 8833, comm: btrfs-endio-wri Tainted: G W
3.0.0-rc1-work-2011-06-01-01+ #11
[ 2857.026586] Call Trace:
[ 2857.026589] [<ffffffff8104db2e>] warn_slowpath_common+0x85/0x9d
[ 2857.026592] [<ffffffff8104db60>] warn_slowpath_null+0x1a/0x1c
[ 2857.026599] [<ffffffffa029cc98>] btrfs_alloc_free_block+0x14e/0x357
[btrfs]
[ 2857.026608] [<ffffffffa02c75bb>] ?
map_private_extent_buffer+0xb1/0xd5 [btrfs]
[ 2857.026614] [<ffffffffa028f99f>] __btrfs_cow_block+0x102/0x31e [btrfs]
[ 2857.026620] [<ffffffffa028e500>] ? unlock_up+0xd9/0xe4 [btrfs]
[ 2857.026626] [<ffffffffa028fcbf>] btrfs_cow_block+0x104/0x14e [btrfs]
[ 2857.026632] [<ffffffffa0292aa0>] btrfs_search_slot+0x162/0x502 [btrfs]
[ 2857.026640] [<ffffffffa02a0e16>] btrfs_lookup_file_extent+0x3c/0x3e
[btrfs]
[ 2857.026646] [<ffffffffa028f13c>] ? btrfs_alloc_path+0x1a/0x2b [btrfs]
[ 2857.026655] [<ffffffffa02b684d>] btrfs_drop_extents+0x10e/0x731 [btrfs]
[ 2857.026658] [<ffffffff8103d050>] ? need_resched+0x23/0x2d
[ 2857.026661] [<ffffffff8147a88e>] ? _cond_resched+0xe/0x22
[ 2857.026663] [<ffffffff8110f8e8>] ?
slab_pre_alloc_hook.clone.33+0x2d/0x31
[ 2857.026666] [<ffffffff81110422>] ? kmem_cache_alloc+0x29/0xf7
[ 2857.026674] [<ffffffffa02adafc>]
insert_reserved_file_extent.clone.34+0x70/0x1fc [btrfs]
[ 2857.026684] [<ffffffffa02c4708>] ? lock_extent_bits+0x5e/0xa8 [btrfs]
[ 2857.026693] [<ffffffffa02b0772>]
btrfs_endio_direct_write+0x171/0x29a [btrfs]
[ 2857.026701] [<ffffffffa02a3afa>] ? end_workqueue_fn+0xf6/0x10e [btrfs]
[ 2857.026704] [<ffffffff81143d1c>] bio_endio+0x2d/0x2f
[ 2857.026711] [<ffffffffa02a3b05>] end_workqueue_fn+0x101/0x10e [btrfs]
[ 2857.026721] [<ffffffffa02cde4d>] worker_loop+0x193/0x4ca [btrfs]
[ 2857.026730] [<ffffffffa02cdcba>] ? btrfs_queue_worker+0x214/0x214
[btrfs]
[ 2857.026732] [<ffffffff81068f4e>] kthread+0x82/0x8a
[ 2857.026735] [<ffffffff81483664>] kernel_thread_helper+0x4/0x10
[ 2857.026738] [<ffffffff81068ecc>] ? kthread_worker_fn+0x14b/0x14b
[ 2857.026741] [<ffffffff81483660>] ? gs_change+0x13/0x13
[ 2857.026742] ---[ end trace 11fa90e2fd0455ab ]---
[ 2863.924897] ------------[ cut here ]------------
[ 2863.924924] WARNING: at fs/btrfs/extent-tree.c:3832
btrfs_free_block_groups+0x13a/0x228 [btrfs]()
[ 2863.924928] Hardware name: XPS 8300
[ 2863.924930] Modules linked in: tun btrfs zlib_deflate libcrc32c brd
fuse cpufreq_ondemand acpi_cpufreq freq_table mperf ip6t_REJECT
nf_conntrack_ipv6 nf_defrag_ipv6 ip6table_filter ip6_tables ipv6 uinput
snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_intel snd_hda_codec
snd_hwdep snd_seq snd_seq_device broadcom snd_pcm snd_timer snd tg3
iTCO_wdt serio_raw dcdbas iTCO_vendor_support microcode soundcore pcspkr
snd_page_alloc i2c_i801 joydev usb_storage i915 drm_kms_helper drm
i2c_algo_bit i2c_core video [last unloaded: scsi_wait_scan]
[ 2863.924977] Pid: 8875, comm: umount Tainted: G W
3.0.0-rc1-work-2011-06-01-01+ #11
[ 2863.924980] Call Trace:
[ 2863.924988] [<ffffffff8104db2e>] warn_slowpath_common+0x85/0x9d
[ 2863.924994] [<ffffffff8104db60>] warn_slowpath_null+0x1a/0x1c
[ 2863.925009] [<ffffffffa029d9fe>] btrfs_free_block_groups+0x13a/0x228
[btrfs]
[ 2863.925026] [<ffffffffa02a68c2>] close_ctree+0x22c/0x346 [btrfs]
[ 2863.925031] [<ffffffff8103d068>] ? should_resched+0xe/0x2e
[ 2863.925036] [<ffffffff8147a88e>] ? _cond_resched+0xe/0x22
[ 2863.925040] [<ffffffff8147b465>] ? down_write+0x29/0x49
[ 2863.925050] [<ffffffffa028ca1e>] btrfs_put_super+0x1d/0x2c [btrfs]
[ 2863.925056] [<ffffffff8111ecb8>] generic_shutdown_super+0x74/0xe9
[ 2863.925060] [<ffffffff8111edad>] kill_anon_super+0x16/0x50
[ 2863.925065] [<ffffffff8111efda>] deactivate_locked_super+0x26/0x4b
[ 2863.925069] [<ffffffff8111f7c9>] deactivate_super+0x3a/0x3f
[ 2863.925073] [<ffffffff81134a0d>] mntput_no_expire+0xd0/0xd5
[ 2863.925076] [<ffffffff8113568c>] sys_umount+0x2dc/0x30a
[ 2863.925081] [<ffffffff81125c68>] ? path_put+0x22/0x27
[ 2863.925085] [<ffffffff81482542>] system_call_fastpath+0x16/0x1b
[ 2863.925089] ---[ end trace 11fa90e2fd0455ac ]---
[ 2863.925091] ------------[ cut here ]------------
[ 2863.925104] WARNING: at fs/btrfs/extent-tree.c:3833
btrfs_free_block_groups+0x155/0x228 [btrfs]()
[ 2863.925107] Hardware name: XPS 8300
[ 2863.925109] Modules linked in: tun btrfs zlib_deflate libcrc32c brd
fuse cpufreq_ondemand acpi_cpufreq freq_table mperf ip6t_REJECT
nf_conntrack_ipv6 nf_defrag_ipv6 ip6table_filter ip6_tables ipv6 uinput
snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_intel snd_hda_codec
snd_hwdep snd_seq snd_seq_device broadcom snd_pcm snd_timer snd tg3
iTCO_wdt serio_raw dcdbas iTCO_vendor_support microcode soundcore pcspkr
snd_page_alloc i2c_i801 joydev usb_storage i915 drm_kms_helper drm
i2c_algo_bit i2c_core video [last unloaded: scsi_wait_scan]
[ 2863.925147] Pid: 8875, comm: umount Tainted: G W
3.0.0-rc1-work-2011-06-01-01+ #11
[ 2863.925150] Call Trace:
[ 2863.925154] [<ffffffff8104db2e>] warn_slowpath_common+0x85/0x9d
[ 2863.925159] [<ffffffff8104db60>] warn_slowpath_null+0x1a/0x1c
[ 2863.925172] [<ffffffffa029da19>] btrfs_free_block_groups+0x155/0x228
[btrfs]
[ 2863.925188] [<ffffffffa02a68c2>] close_ctree+0x22c/0x346 [btrfs]
[ 2863.925193] [<ffffffff8103d068>] ? should_resched+0xe/0x2e
[ 2863.925196] [<ffffffff8147a88e>] ? _cond_resched+0xe/0x22
[ 2863.925200] [<ffffffff8147b465>] ? down_write+0x29/0x49
[ 2863.925209] [<ffffffffa028ca1e>] btrfs_put_super+0x1d/0x2c [btrfs]
[ 2863.925214] [<ffffffff8111ecb8>] generic_shutdown_super+0x74/0xe9
[ 2863.925218] [<ffffffff8111edad>] kill_anon_super+0x16/0x50
[ 2863.925223] [<ffffffff8111efda>] deactivate_locked_super+0x26/0x4b
[ 2863.925227] [<ffffffff8111f7c9>] deactivate_super+0x3a/0x3f
[ 2863.925231] [<ffffffff81134a0d>] mntput_no_expire+0xd0/0xd5
[ 2863.925234] [<ffffffff8113568c>] sys_umount+0x2dc/0x30a
[ 2863.925238] [<ffffffff81125c68>] ? path_put+0x22/0x27
[ 2863.925242] [<ffffffff81482542>] system_call_fastpath+0x16/0x1b
[ 2863.925245] ---[ end trace 11fa90e2fd0455ad ]---
[ 2863.925248] ------------[ cut here ]------------
[ 2863.925261] WARNING: at fs/btrfs/extent-tree.c:6846
btrfs_free_block_groups+0x1e6/0x228 [btrfs]()
[ 2863.925263] Hardware name: XPS 8300
[ 2863.925265] Modules linked in: tun btrfs zlib_deflate libcrc32c brd
fuse cpufreq_ondemand acpi_cpufreq freq_table mperf ip6t_REJECT
nf_conntrack_ipv6 nf_defrag_ipv6 ip6table_filter ip6_tables ipv6 uinput
snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_intel snd_hda_codec
snd_hwdep snd_seq snd_seq_device broadcom snd_pcm snd_timer snd tg3
iTCO_wdt serio_raw dcdbas iTCO_vendor_support microcode soundcore pcspkr
snd_page_alloc i2c_i801 joydev usb_storage i915 drm_kms_helper drm
i2c_algo_bit i2c_core video [last unloaded: scsi_wait_scan]
[ 2863.925303] Pid: 8875, comm: umount Tainted: G W
3.0.0-rc1-work-2011-06-01-01+ #11
[ 2863.925305] Call Trace:
[ 2863.925310] [<ffffffff8104db2e>] warn_slowpath_common+0x85/0x9d
[ 2863.925323] [<ffffffffa029dac8>] ?
btrfs_free_block_groups+0x204/0x228 [btrfs]
[ 2863.925328] [<ffffffff8104db60>] warn_slowpath_null+0x1a/0x1c
[ 2863.925341] [<ffffffffa029daaa>] btrfs_free_block_groups+0x1e6/0x228
[btrfs]
[ 2863.925356] [<ffffffffa02a68c2>] close_ctree+0x22c/0x346 [btrfs]
[ 2863.925360] [<ffffffff8103d068>] ? should_resched+0xe/0x2e
[ 2863.925364] [<ffffffff8147a88e>] ? _cond_resched+0xe/0x22
[ 2863.925368] [<ffffffff8147b465>] ? down_write+0x29/0x49
[ 2863.925377] [<ffffffffa028ca1e>] btrfs_put_super+0x1d/0x2c [btrfs]
[ 2863.925382] [<ffffffff8111ecb8>] generic_shutdown_super+0x74/0xe9
[ 2863.925386] [<ffffffff8111edad>] kill_anon_super+0x16/0x50
[ 2863.925391] [<ffffffff8111efda>] deactivate_locked_super+0x26/0x4b
[ 2863.925395] [<ffffffff8111f7c9>] deactivate_super+0x3a/0x3f
[ 2863.925398] [<ffffffff81134a0d>] mntput_no_expire+0xd0/0xd5
[ 2863.925402] [<ffffffff8113568c>] sys_umount+0x2dc/0x30a
[ 2863.925406] [<ffffffff81125c68>] ? path_put+0x22/0x27
[ 2863.925410] [<ffffffff81482542>] system_call_fastpath+0x16/0x1b
[ 2863.925413] ---[ end trace 11fa90e2fd0455ae ]---
[ 2863.925416] space_info has 13627392 free, is full
[ 2863.925419] space_info total=41943040, used=19832832, pinned=0,
reserved=28672, may_use=0, readonly=8454144
Some btrfs complaints
---------------------
[ 3704.817050] btrfs no csum found for inode 17005 start 1302528
[ 3704.817058] btrfs no csum found for inode 17005 start 1306624
[ 3704.817064] btrfs no csum found for inode 17005 start 1310720
[ 3704.817089] btrfs no csum found for inode 17005 start 1314816
[ 3704.817094] btrfs no csum found for inode 17005 start 1318912
[ 3704.817100] btrfs no csum found for inode 17005 start 1323008
[ 3704.817105] btrfs no csum found for inode 17005 start 1327104
[ 3704.817111] btrfs no csum found for inode 17005 start 1331200
[ 3704.817117] btrfs no csum found for inode 17005 start 1335296
[ 3704.817122] btrfs no csum found for inode 17005 start 1339392
[ 3704.817128] btrfs no csum found for inode 17005 start 1343488
[ 3704.817133] btrfs no csum found for inode 17005 start 1347584
[ 3704.817139] btrfs no csum found for inode 17005 start 1351680
[ 3704.817309] btrfs csum failed ino 17005 off 1302528 csum 451097791
private 0
[ 3704.817350] btrfs csum failed ino 17005 off 1306624 csum 451097791
private 0
[ 3704.817377] btrfs csum failed ino 17005 off 1310720 csum 451097791
private 0
[ 3704.817420] btrfs csum failed ino 17005 off 1314816 csum 978321154
private 0
[ 3704.817446] btrfs csum failed ino 17005 off 1318912 csum 2566472073
private 0
[ 3704.817472] btrfs csum failed ino 17005 off 1323008 csum 2566472073
private 0
[ 3704.817497] btrfs csum failed ino 17005 off 1327104 csum 2566472073
private 0
[ 3704.817523] btrfs csum failed ino 17005 off 1331200 csum 2566472073
private 0
[ 3704.817549] btrfs csum failed ino 17005 off 1335296 csum 2566472073
private 0
[ 3704.817575] btrfs csum failed ino 17005 off 1339392 csum 2566472073
private 0
[ 3704.817601] btrfs csum failed ino 17005 off 1343488 csum 2566472073
private 0
[ 3704.817627] btrfs csum failed ino 17005 off 1347584 csum 2566472073
private 0
[ 3704.817654] btrfs csum failed ino 17005 off 1351680 csum 2779917954
private 0
Hang
----
[152684.675833] btrfs-transacti D ffff880184e18bd0 0 22322 2
0x00000080
[152684.675835] ffff88017c26dd60 0000000000000046 0000000000000000
ffff880100000001
[152684.675838] 0000000000012540 0000000000012540 0000000000012540
ffff8801a2524560
[152684.675840] 0000000000012540 ffff88017c26dfd8 0000000000012540
0000000000012540
[152684.675842] Call Trace:
[152684.675844] [<ffffffff810696b2>] ? prepare_to_wait+0x6c/0x79
[152684.675856] [<ffffffffa02a8190>] wait_for_commit.clone.14+0x90/0xd5
[btrfs]
[152684.675858] [<ffffffff8106941f>] ? wake_up_bit+0x2a/0x2a
[152684.675866] [<ffffffffa02a9007>]
btrfs_commit_transaction+0x102/0x694 [btrfs]
[152684.675874] [<ffffffffa02a8907>] ?
join_transaction.clone.20+0x17b/0x186 [btrfs]
[152684.675876] [<ffffffff8106941f>] ? wake_up_bit+0x2a/0x2a
[152684.675882] [<ffffffffa02a3764>] transaction_kthread+0x17a/0x22f
[btrfs]
[152684.675889] [<ffffffffa02a35ea>] ? btrfs_congested_fn+0x86/0x86 [btrfs]
[152684.675891] [<ffffffff81068f4e>] kthread+0x82/0x8a
[152684.675893] [<ffffffff81483664>] kernel_thread_helper+0x4/0x10
[152684.675895] [<ffffffff81068ecc>] ? kthread_worker_fn+0x14b/0x14b
[152684.675897] [<ffffffff81483660>] ? gs_change+0x13/0x13
[152684.675898] flush-btrfs-770 D 00000001091bba6c 0 22331 2
0x00000080
[152684.675900] ffff88017c19bb10 0000000000000046 ffff88017c19ba70
ffff880100000000
[152684.675902] 0000000000012540 0000000000012540 0000000000012540
ffff8801a2525c80
[152684.675905] 0000000000012540 ffff88017c19bfd8 0000000000012540
0000000000012540
[152684.675907] Call Trace:
[152684.675909] [<ffffffff8147ab8c>] schedule_timeout+0x36/0xe3
[152684.675912] [<ffffffff8107c30e>] ? arch_local_irq_save+0x18/0x1e
[152684.675914] [<ffffffff8147be0f>] ?
_raw_spin_unlock_irqrestore+0x17/0x19
[152684.675916] [<ffffffff810696b2>] ? prepare_to_wait+0x6c/0x79
[152684.675923] [<ffffffffa02a91c8>]
btrfs_commit_transaction+0x2c3/0x694 [btrfs]
[152684.675924] [<ffffffff8106941f>] ? wake_up_bit+0x2a/0x2a
[152684.675933] [<ffffffffa02b2a07>] btrfs_write_inode+0xa0/0xa9 [btrfs]
[152684.675935] [<ffffffff8113b12f>] writeback_single_inode+0x125/0x1bf
[152684.675937] [<ffffffff8113b40f>] writeback_sb_inodes+0xce/0x160
[152684.675939] [<ffffffff8113c036>] wb_writeback+0x258/0x3aa
[152684.675942] [<ffffffff8113c211>] wb_do_writeback+0x89/0x1a1
[152684.675944] [<ffffffff8105ad6e>] ? run_timer_softirq+0x29a/0x29a
[152684.675946] [<ffffffff8113c3b5>] bdi_writeback_thread+0x8c/0x20f
[152684.675948] [<ffffffff8113c329>] ? wb_do_writeback+0x1a1/0x1a1
[152684.675950] [<ffffffff81068f4e>] kthread+0x82/0x8a
[152684.675952] [<ffffffff81483664>] kernel_thread_helper+0x4/0x10
[152684.675954] [<ffffffff81068ecc>] ? kthread_worker_fn+0x14b/0x14b
[152684.675956] [<ffffffff81483660>] ? gs_change+0x13/0x13
[152684.675957] fsstress D 0000000100363ef6 0 22334 1
0x00000084
[152684.675959] ffff880169f8bb98 0000000000000082 0000000000000000
0000000000000000
[152684.675961] 0000000000012540 0000000000012540 0000000000012540
ffff880181f21720
[152684.675963] 0000000000012540 ffff880169f8bfd8 0000000000012540
0000000000012540
[152684.675966] Call Trace:
[152684.675967] [<ffffffff810696b2>] ? prepare_to_wait+0x6c/0x79
[152684.675974] [<ffffffffa02a8758>]
wait_current_trans.clone.19+0xa0/0xd4 [btrfs]
[152684.675976] [<ffffffff8106941f>] ? wake_up_bit+0x2a/0x2a
[152684.675977] [<ffffffff8147afde>] ? mutex_lock+0x29/0x4a
[152684.675984] [<ffffffffa02a988d>] start_transaction+0x98/0x24f [btrfs]
[152684.675991] [<ffffffffa02a9d67>] btrfs_start_transaction+0x13/0x15
[btrfs]
[152684.675999] [<ffffffffa02b3d72>] btrfs_create+0x3a/0x1de [btrfs]
[152684.676002] [<ffffffff811276d3>] vfs_create+0x70/0x92
[152684.676004] [<ffffffff8112791d>] do_last+0x228/0x599
[152684.676006] [<ffffffff81128ffd>] path_openat+0xc8/0x34d
[152684.676007] [<ffffffff81126dfa>] ? putname+0x34/0x36
[152684.676009] [<ffffffff811292bf>] do_filp_open+0x3d/0x89
[152684.676012] [<ffffffff81132e6a>] ? alloc_fd+0x74/0x11f
[152684.676014] [<ffffffff8111c847>] do_sys_open+0x74/0x106
[152684.676015] [<ffffffff8111c8f9>] sys_open+0x20/0x22
[152684.676017] [<ffffffff8111c923>] sys_creat+0x15/0x17
[152684.676019] [<ffffffff81482542>] system_call_fastpath+0x16/0x1b
[152684.676020] fsstress D 0000000100363ef5 0 22335 1
0x00000084
[152684.676022] ffff8801665018e8 0000000000000082 ffffffff81144cd4
00000000000000c0
[152684.676024] 0000000000012540 0000000000012540 0000000000012540
ffff880181f22e40
[152684.676027] 0000000000012540 ffff880166501fd8 0000000000012540
0000000000012540
[152684.676029] Call Trace:
[152684.676031] [<ffffffff81144cd4>] ? bvec_alloc_bs+0xb0/0xcf
[152684.676033] [<ffffffff8147ab8c>] schedule_timeout+0x36/0xe3
[152684.676041] [<ffffffffa02c9d78>] ? __btrfs_map_block+0x5f1/0x609
[btrfs]
[152684.676043] [<ffffffff8107c30e>] ? arch_local_irq_save+0x18/0x1e
[152684.676045] [<ffffffff8103d050>] ? need_resched+0x23/0x2d
[152684.676047] [<ffffffff8147a94f>] wait_for_common+0xad/0x102
[152684.676049] [<ffffffff8104625f>] ? try_to_wake_up+0x1aa/0x1aa
[152684.676051] [<ffffffff81053995>] ? local_bh_enable_ip+0xe/0x10
[152684.676053] [<ffffffff8147aa5c>] wait_for_completion+0x1d/0x1f
[152684.676055] [<ffffffff8113b892>] writeback_inodes_sb_nr+0x76/0x7d
[152684.676057] [<ffffffff8113b945>]
writeback_inodes_sb_nr_if_idle+0x41/0x57
[152684.676062] [<ffffffffa0296eca>]
shrink_delalloc.clone.46+0xb2/0x155 [btrfs]
[152684.676068] [<ffffffffa0297066>]
reserve_metadata_bytes.clone.47+0xf9/0x1b3 [btrfs]
[152684.676074] [<ffffffffa0299c01>] btrfs_block_rsv_add+0x2c/0x4f [btrfs]
[152684.676080] [<ffffffffa0299e2a>]
btrfs_trans_reserve_metadata+0x4f/0x74 [btrfs]
[152684.676087] [<ffffffffa02a9985>] start_transaction+0x190/0x24f [btrfs]
[152684.676094] [<ffffffffa02a9d67>] btrfs_start_transaction+0x13/0x15
[btrfs]
[152684.676102] [<ffffffffa02b3d72>] btrfs_create+0x3a/0x1de [btrfs]
[152684.676104] [<ffffffff811276d3>] vfs_create+0x70/0x92
[152684.676106] [<ffffffff8112791d>] do_last+0x228/0x599
[152684.676107] [<ffffffff81128ffd>] path_openat+0xc8/0x34d
[152684.676109] [<ffffffff8147be0f>] ?
_raw_spin_unlock_irqrestore+0x17/0x19
[152684.676111] [<ffffffff8147bda6>] ? _raw_spin_lock+0xe/0x10
[152684.676113] [<ffffffff811292bf>] do_filp_open+0x3d/0x89
[152684.676115] [<ffffffff81132e6a>] ? alloc_fd+0x74/0x11f
[152684.676117] [<ffffffff8111c847>] do_sys_open+0x74/0x106
[152684.676119] [<ffffffff8111c8f9>] sys_open+0x20/0x22
[152684.676120] [<ffffffff8111c923>] sys_creat+0x15/0x17
[152684.676122] [<ffffffff81482542>] system_call_fastpath+0x16/0x1b
[152684.676123] fsstress D 0000000100363ef5 0 22336 1
0x00000084
[152684.676125] ffff88017ba37d48 0000000000000086 ffff88017ba37cb8
ffffffff812262b8
[152684.676127] 0000000000012540 0000000000012540 0000000000012540
ffff880181b01720
[152684.676130] 0000000000012540 ffff88017ba37fd8 0000000000012540
0000000000012540
[152684.676132] Call Trace:
[152684.676134] [<ffffffff812262b8>] ? cpumask_next_and+0x2c/0x39
[152684.676136] [<ffffffff8147ab8c>] schedule_timeout+0x36/0xe3
[152684.676138] [<ffffffff81026cb8>] ? flat_send_IPI_mask+0x11/0x13
[152684.676140] [<ffffffff8103d050>] ? need_resched+0x23/0x2d
[152684.676142] [<ffffffff8147a94f>] wait_for_common+0xad/0x102
[152684.676143] [<ffffffff8104625f>] ? try_to_wake_up+0x1aa/0x1aa
[152684.676145] [<ffffffff81053995>] ? local_bh_enable_ip+0xe/0x10
[152684.676147] [<ffffffff8113f1e8>] ? __sync_filesystem+0x7a/0x7a
[152684.676148] [<ffffffff8147aa5c>] wait_for_completion+0x1d/0x1f
[152684.676150] [<ffffffff8113b9ec>] sync_inodes_sb+0x91/0x17d
[152684.676152] [<ffffffff8113f1e8>] ? __sync_filesystem+0x7a/0x7a
[152684.676154] [<ffffffff8113f1b5>] __sync_filesystem+0x47/0x7a
[152684.676155] [<ffffffff8113f1fe>] sync_one_sb+0x16/0x18
[152684.676157] [<ffffffff8111f907>] iterate_supers+0x6d/0xbe
[152684.676159] [<ffffffff8113f133>] sync_filesystems+0x20/0x22
[152684.676160] [<ffffffff8113f271>] sys_sync+0x21/0x33
[152684.676162] [<ffffffff81482542>] system_call_fastpath+0x16/0x1b
[152684.676164] updatedb D 0000000102716c7c 0 25199 25193
0x00000080
[152684.676166] ffff88017fb01e28 0000000000000086 ffff88017fb01f28
ffff880100000000
[152684.676168] 0000000000012540 0000000000012540 0000000000012540
ffff88019ee0ae40
[152684.676170] 0000000000012540 ffff88017fb01fd8 0000000000012540
0000000000012540
[152684.676172] Call Trace:
[152684.676174] [<ffffffff8147b11a>]
__mutex_lock_common.clone.5+0x11b/0x17c
[152684.676177] [<ffffffff8112b56c>] ? filldir64+0xd5/0xd5
[152684.676178] [<ffffffff8147b1a3>]
__mutex_lock_killable_slowpath+0x13/0x15
[152684.676181] [<ffffffff8106bea1>] __mutex_fastpath_lock_retval+0x18/0x1a
[152684.676182] [<ffffffff8147af53>] mutex_lock_killable+0x38/0x4d
[152684.676184] [<ffffffff8112b74c>] vfs_readdir+0x56/0xac
[152684.676186] [<ffffffff8112b88b>] sys_getdents+0x81/0xd1
[152684.676188] [<ffffffff81482542>] system_call_fastpath+0x16/0x1b
[152684.676191] sync D 00000001091bba63 0 26977 1943
0x00000080
[152684.676193] ffff880183239d48 0000000000000086 0007ffffffffffff
ffff880100000000
[152684.676196] 0000000000012540 0000000000012540 0000000000012540
ffff880181b04560
[152684.676198] 0000000000012540 ffff880183239fd8 0000000000012540
0000000000012540
[152684.676200] Call Trace:
[152684.676202] [<ffffffff8147ab8c>] schedule_timeout+0x36/0xe3
[152684.676203] [<ffffffff81026cb8>] ? flat_send_IPI_mask+0x11/0x13
[152684.676205] [<ffffffff8103d050>] ? need_resched+0x23/0x2d
[152684.676207] [<ffffffff8147a94f>] wait_for_common+0xad/0x102
[152684.676209] [<ffffffff8104625f>] ? try_to_wake_up+0x1aa/0x1aa
[152684.676210] [<ffffffff81053995>] ? local_bh_enable_ip+0xe/0x10
[152684.676212] [<ffffffff8113f1e8>] ? __sync_filesystem+0x7a/0x7a
[152684.676214] [<ffffffff8147aa5c>] wait_for_completion+0x1d/0x1f
[152684.676216] [<ffffffff8113b892>] writeback_inodes_sb_nr+0x76/0x7d
[152684.676218] [<ffffffff8113b8bb>] writeback_inodes_sb+0x22/0x24
[152684.676219] [<ffffffff8113f1bf>] __sync_filesystem+0x51/0x7a
[152684.676221] [<ffffffff8113f1fe>] sync_one_sb+0x16/0x18
[152684.676223] [<ffffffff8111f907>] iterate_supers+0x6d/0xbe
[152684.676224] [<ffffffff8113f133>] sync_filesystems+0x20/0x22
[152684.676226] [<ffffffff8113f267>] sys_sync+0x17/0x33
[152684.676227] [<ffffffff81482542>] system_call_fastpath+0x16/0x1b
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: btrfs hang on brd
2011-06-03 9:41 ` Adrian Hunter
@ 2011-06-07 5:35 ` Adrian Hunter
0 siblings, 0 replies; 6+ messages in thread
From: Adrian Hunter @ 2011-06-07 5:35 UTC (permalink / raw)
To: dave; +Cc: chris.mason, linux-btrfs
On 03/06/11 12:41, Adrian Hunter wrote:
> No improvement on 3.0-rc1+ (commit
> 5c6cce92bc8aee751aafe82c5d9caf7553226a3d).
And on 59c5f46fbe01a00eedf54a23789634438bb80603 Linux 3.0-rc2
btrfs quickly fails to mount due to no space e.g.
Script
------
#!/bin/sh
sudo modprobe brd rd_size=262144
sudo umount /mnt/test/ 2> /dev/null
echo 'mkfs.btrfs /dev/ram0'
sudo mkfs.btrfs /dev/ram0
sudo mkdir -p /mnt/test
echo 'mount -t btrfs /dev/ram0 /mnt/test'
sudo mount -t btrfs /dev/ram0 /mnt/test
sudo mkdir -p /mnt/test/test
sudo chown $USER /mnt/test/test
sudo chgrp $USER /mnt/test/test
sudo umount /mnt/test
full=0
i=0
while true; do
sudo mount -t btrfs /dev/ram0 /mnt/test
if df | grep ram0 | grep 100% > /dev/null; then
full=`expr $full \+ 1`
if test $full -gt 6;then
rm -rf /mnt/test/test/*
full=0
fi
else
full=0
fi
fsstress -c -r -d /mnt/test/test -p 3 -n 1000 -l 10
sudo umount /mnt/test
i=`expr $i \+ 1`
echo $i
done
Script Output
-------------
mkfs.btrfs /dev/ram0
WARNING! - Btrfs Btrfs v0.19 IS EXPERIMENTAL
WARNING! - see http://btrfs.wiki.kernel.org before using
fs created label (null) on /dev/ram0
nodesize 4096 leafsize 4096 sectorsize 4096 size 256.00MB
Btrfs Btrfs v0.19
mount -t btrfs /dev/ram0 /mnt/test
1
2
3
4
mount: No space left on device
^C
Kernel messages
---------------
[ 95.084429] brd: module loaded
[ 95.368708] Btrfs loaded
[ 95.369455] device fsid 9644bae59f78285c-8db3a698a8a82293 devid 1
transid 7 /dev/ram0
[ 95.370582] SELinux: initialized (dev ram0, type btrfs), uses xattr
[ 95.487905] device fsid 9644bae59f78285c-8db3a698a8a82293 devid 1
transid 10 /dev/ram0
[ 95.488889] SELinux: initialized (dev ram0, type btrfs), uses xattr
[ 107.336869] device fsid 9644bae59f78285c-8db3a698a8a82293 devid 1
transid 2664 /dev/ram0
[ 107.338873] SELinux: initialized (dev ram0, type btrfs), uses xattr
[ 115.861909] device fsid 9644bae59f78285c-8db3a698a8a82293 devid 1
transid 6816 /dev/ram0
[ 115.864089] SELinux: initialized (dev ram0, type btrfs), uses xattr
[ 122.586606] device fsid 9644bae59f78285c-8db3a698a8a82293 devid 1
transid 10872 /dev/ram0
[ 122.587779] SELinux: initialized (dev ram0, type btrfs), uses xattr
[ 128.824401] BTRFS: inode 19622 still on the orphan list
[ 128.844945] ------------[ cut here ]------------
[ 128.844969] WARNING: at fs/btrfs/extent-tree.c:6878
btrfs_free_block_groups+0x1e6/0x228 [btrfs]()
[ 128.844973] Hardware name: XPS 8300
[ 128.844974] Modules linked in: btrfs zlib_deflate libcrc32c brd tun
fuse cpufreq_ondemand acpi_cpufreq freq_table mperf ip6t_REJECT
nf_conntrack_ipv6 nf_defrag_ipv6 ip6table_filter ip6_tables ipv6 uinput
snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_intel snd_hda_codec
snd_hwdep snd_seq snd_seq_device snd_pcm broadcom snd_timer snd tg3
pcspkr joydev iTCO_wdt iTCO_vendor_support soundcore snd_page_alloc
i2c_i801 serio_raw dcdbas microcode usb_storage i915 drm_kms_helper drm
i2c_algo_bit i2c_core video [last unloaded: scsi_wait_scan]
[ 128.845024] Pid: 2503, comm: umount Not tainted
3.0.0-rc2-2011-06-06-02+ #13
[ 128.845026] Call Trace:
[ 128.845035] [<ffffffff8104db2e>] warn_slowpath_common+0x85/0x9d
[ 128.845050] [<ffffffffa02a6b70>] ?
btrfs_free_block_groups+0x204/0x228 [btrfs]
[ 128.845056] [<ffffffff8104db60>] warn_slowpath_null+0x1a/0x1c
[ 128.845069] [<ffffffffa02a6b52>] btrfs_free_block_groups+0x1e6/0x228
[btrfs]
[ 128.845087] [<ffffffffa02afa0b>] close_ctree+0x22c/0x346 [btrfs]
[ 128.845092] [<ffffffff8103d068>] ? should_resched+0xe/0x2e
[ 128.845097] [<ffffffff8147abfe>] ? _cond_resched+0xe/0x22
[ 128.845100] [<ffffffff8147b7d5>] ? down_write+0x29/0x49
[ 128.845110] [<ffffffffa0295a1e>] btrfs_put_super+0x1d/0x2c [btrfs]
[ 128.845116] [<ffffffff8111ecb4>] generic_shutdown_super+0x74/0xe9
[ 128.845120] [<ffffffff8111eda9>] kill_anon_super+0x16/0x50
[ 128.845125] [<ffffffff8111efd6>] deactivate_locked_super+0x26/0x4b
[ 128.845129] [<ffffffff8111f7c5>] deactivate_super+0x3a/0x3f
[ 128.845133] [<ffffffff81134a09>] mntput_no_expire+0xd0/0xd5
[ 128.845136] [<ffffffff81135688>] sys_umount+0x2dc/0x30a
[ 128.845141] [<ffffffff81125c64>] ? path_put+0x22/0x27
[ 128.845145] [<ffffffff814828c2>] system_call_fastpath+0x16/0x1b
[ 128.845149] ---[ end trace e535ebf83dd43354 ]---
[ 128.845152] space_info has 8814592 free, is full
[ 128.845156] space_info total=41943040, used=24576000, pinned=0,
reserved=98304, may_use=0, readonly=8454144
[ 128.897312] device fsid 9644bae59f78285c-8db3a698a8a82293 devid 1
transid 14722 /dev/ram0
[ 128.910740] BTRFS: inode 19622 still on the orphan list
[ 128.910747] btrfs: could not do orphan cleanup -28
[ 128.948912] btrfs: open_ctree failed
^ permalink raw reply [flat|nested] 6+ messages in thread
end of thread, other threads:[~2011-06-07 5:35 UTC | newest]
Thread overview: 6+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2011-05-31 7:03 btrfs hang on brd Adrian Hunter
2011-06-01 8:54 ` David Sterba
2011-06-01 10:07 ` Adrian Hunter
2011-06-01 10:30 ` ajh mls
2011-06-03 9:41 ` Adrian Hunter
2011-06-07 5:35 ` Adrian Hunter
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