Hello, i have just noticed oops, which happend during experiments this morning
Libor [141443.054425] btrfs: block rsv returned -28 [141443.054428] ------------[ cut here ]------------ [141443.054466] WARNING: at /build/buildd-linux_3.2.21-3-amd64- l_qIBB/linux-3.2.21/fs/btrfs/extent-tree.c:5985 btrfs_alloc_free_block+0xd7/0x284 [btrfs]() [141443.054470] Hardware name: VMware Virtual Platform [141443.054472] Modules linked in: autofs4 tcm_loop tcm_fc iscsi_target_mod target_core_pscsi target_core_file target_core_iblock target_core_mod des_generic ecb md4 hmac nls_utf8 cifs libfc scsi_transport_fc scsi_tgt configfs vmsync(O) vmhgfs(O) nfsd nfs nfs_acl auth_rpcgss fscache lockd sunrpc dm_multipath scsi_dh loop coretemp crc32c_intel ghash_clmulni_intel aesni_intel aes_x86_64 parport_pc joydev parport usbhid snd_pcm snd_page_alloc snd_timer snd vmw_balloon soundcore hid aes_generic cryptd psmouse serio_raw pcspkr processor ac evdev power_supply thermal_sys i2c_piix4 i2c_core container shpchp vmci(O) button ext4 crc16 jbd2 mbcache btrfs crc32c libcrc32c zlib_deflate dm_mod sr_mod cdrom ata_generic sd_mod crc_t10dif uhci_hcd floppy ehci_hcd usbcore usb_common e1000 ata_piix mptspi scsi_transport_spi mptscsih mptbase libata scsi_mod [last unloaded: autofs4] [141443.054526] Pid: 28983, comm: btrfs-transacti Tainted: G O 3.2.0-3-amd64 #1 [141443.054529] Call Trace: [141443.054537] [<ffffffff81046901>] ? warn_slowpath_common+0x78/0x8c [141443.054550] [<ffffffffa01441fe>] ? btrfs_alloc_free_block+0xd7/0x284 [btrfs] [141443.054566] [<ffffffffa01690fe>] ? read_extent_buffer+0x94/0xed [btrfs] [141443.054575] [<ffffffffa01377bf>] ? __btrfs_cow_block+0x102/0x33a [btrfs] [141443.054585] [<ffffffffa0137aee>] ? btrfs_cow_block+0xf7/0x143 [btrfs] [141443.054595] [<ffffffffa013a546>] ? btrfs_search_slot+0x225/0x64e [btrfs] [141443.054608] [<ffffffffa0148750>] ? btrfs_del_csums+0xc8/0x252 [btrfs] [141443.054618] [<ffffffffa013ff9c>] ? __btrfs_free_extent+0x54f/0x5c8 [btrfs] [141443.054630] [<ffffffffa0142fc9>] ? run_clustered_refs+0x65e/0x6aa [btrfs] [141443.054642] [<ffffffffa01430de>] ? btrfs_run_delayed_refs+0xc9/0x176 [btrfs] [141443.054647] [<ffffffff8134a0a0>] ? mutex_lock+0xd/0x2d [141443.054661] [<ffffffffa0150153>] ? btrfs_commit_transaction+0x8f/0x6f9 [btrfs] [141443.054667] [<ffffffff8105f5f3>] ? add_wait_queue+0x3c/0x3c [141443.054679] [<ffffffffa014faba>] ? join_transaction.isra.24+0x5a/0x1f3 [btrfs] [141443.054692] [<ffffffffa0150bd5>] ? start_transaction+0x1ed/0x242 [btrfs] [141443.054705] [<ffffffffa014a7ad>] ? transaction_kthread+0x156/0x20f [btrfs] [141443.054717] [<ffffffffa014a657>] ? btrfs_congested_fn+0x7b/0x7b [btrfs] [141443.054720] [<ffffffff8105efad>] ? kthread+0x76/0x7e [141443.054725] [<ffffffff81351cf4>] ? kernel_thread_helper+0x4/0x10 [141443.054729] [<ffffffff8105ef37>] ? kthread_worker_fn+0x139/0x139 [141443.054732] [<ffffffff81351cf0>] ? gs_change+0x13/0x13 [141443.054734] ---[ end trace 2684d70a838e2d6c ]---
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