From mboxrd@z Thu Jan 1 00:00:00 1970 From: liubo Subject: Re: kernel BUG at fs/btrfs/extent-tree.c:6164! Date: Tue, 07 Jun 2011 13:31:27 +0800 Message-ID: <4DEDB7AF.2060308@cn.fujitsu.com> References: <4DEC90CB.4050609@jp.fujitsu.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-2022-JP Cc: Linux Btrfs , Chris Mason To: Tsutomu Itoh Return-path: In-Reply-To: <4DEC90CB.4050609@jp.fujitsu.com> List-ID: On 06/06/2011 04:33 PM, Tsutomu Itoh wrote: > Hi, > > I encountered following panic using 'btrfs-unstable + for-linus' > kernel. > > I ran "btrfs fi bal /test5" command, and mount option of /test5 > is as follows: > > /dev/sdc3 on /test5 type btrfs (rw,space_cache,compress=lzo,inode_cache) > So, just a "btrfs fi bal" would lead to the bug? I've figured out the warnings, but not reproduced the bug yet... I used 'btrfs-unstable + for-linus" whose top commit is commit aa0467d8d2a00e75b2bb6a56a4ee6d70c5d1928f Author: David Sterba Date: Fri Jun 3 16:29:08 2011 +0200 btrfs: fix uninitialized variable warning and tried on 1) a single disk, 2) 2 disks and 3) 4 disks respectively, but none of them leaded to the below bug. I guess maybe I miss something to reproduce it? thanks, liubo > Thanks, > Tsutomu > > ================================================================= > > btrfs: relocating block group 23383244800 flags 20 > btrfs: found 2959 extents > ------------[ cut here ]------------ > WARNING: at fs/btrfs/transaction.c:213 start_transaction+0x2a7/0x2b0 [btrfs]() > Hardware name: PRIMERGY > Modules linked in: autofs4 sunrpc 8021q garp stp llc cpufreq_ondemand acpi_cpufr > eq freq_table mperf ipv6 btrfs zlib_deflate crc32c libcrc32c ext3 jbd dm_mirror > dm_region_hash dm_log dm_mod kvm uinput ppdev parport_pc parport sg pcspkr i2c_i > 801 i2c_core iTCO_wdt iTCO_vendor_support tg3 shpchp pci_hotplug i3000_edac edac > _core ext4 mbcache jbd2 crc16 sd_mod crc_t10dif sr_mod cdrom megaraid_sas pata_a > cpi ata_generic ata_piix libata scsi_mod floppy [last unloaded: microcode] > Pid: 23781, comm: btrfs Tainted: G W 2.6.39btrfs-test+ #4 > Call Trace: > [] warn_slowpath_common+0x7f/0xc0 > [] warn_slowpath_null+0x1a/0x20 > [] start_transaction+0x2a7/0x2b0 [btrfs] > [] ? btrfs_wait_ordered_range+0x10d/0x160 [btrfs] > [] btrfs_start_transaction+0x13/0x20 [btrfs] > [] btrfs_evict_inode+0x11a/0x260 [btrfs] > [] evict+0x78/0x170 > [] iput+0xe2/0x1a0 > [] btrfs_remove_block_group+0x141/0x3c0 [btrfs] > [] btrfs_relocate_chunk+0x54a/0x670 [btrfs] > [] ? read_extent_buffer+0xd8/0x1d0 [btrfs] > [] ? btrfs_previous_item+0xb1/0x150 [btrfs] > [] btrfs_balance+0x21a/0x2b0 [btrfs] > [] ? path_openat+0x101/0x3d0 > [] btrfs_ioctl+0x51c/0xc40 [btrfs] > [] ? handle_mm_fault+0x148/0x270 > [] ? do_page_fault+0x1d8/0x4b0 > [] do_vfs_ioctl+0x9a/0x540 > [] sys_ioctl+0xa1/0xb0 > [] system_call_fastpath+0x16/0x1b > ---[ end trace e5c5cb2e98a3cd1a ]--- > btrfs: relocating block group 20971520 flags 18 > btrfs: relocating block group 34925969408 flags 18 > btrfs: found 1 extents > ------------[ cut here ]------------ > kernel BUG at fs/btrfs/extent-tree.c:6164! > invalid opcode: 0000 [#1] SMP > last sysfs file: /sys/kernel/mm/ksm/run > CPU 0 > Modules linked in: autofs4 sunrpc 8021q garp stp llc cpufreq_ondemand acpi_cpufreq freq_table mperf ipv6 btrfs zlib_deflate crc32c libcrc32c ext3 jbd dm_mirror dm_region_hash dm_log dm_mod kvm uinput ppdev parport_pc parport sg pcspkr i2c_i801 i2c_core iTCO_wdt iTCO_vendor_support tg3 shpchp pci_hotplug i3000_edac edac_core ext4 mbcache jbd2 crc16 sd_mod crc_t10dif sr_mod cdrom megaraid_sas pata_acpi ata_generic ata_piix libata scsi_mod floppy [last unloaded: microcode] > > Pid: 4109, comm: btrfs Tainted: G W 2.6.39btrfs-test+ #4 FUJITSU-SV PRIMERGY /D2399 > RIP: 0010:[] [] walk_up_proc+0x375/0x420 [btrfs] > RSP: 0018:ffff8801801eb9c8 EFLAGS: 00010286 > RAX: 0000000000000005 RBX: ffff880167a70140 RCX: fffffffffffffff8 > RDX: ffff8801801ea000 RSI: ffff880000000000 RDI: ffff880194909fa8 > RBP: ffff8801801eba18 R08: 0000000000000000 R09: 0000000000000005 > R10: 0000000000000001 R11: ffff880194909fa8 R12: 0000000000000000 > R13: ffff88013973d000 R14: ffff88015ad4d9a0 R15: ffff880042203920 > FS: 00007fa86bcb9740(0000) GS:ffff88019fc00000(0000) knlGS:0000000000000000 > CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b > CR2: 00000033cf60b0c0 CR3: 0000000181cf7000 CR4: 00000000000006f0 > DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 > DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 > Process btrfs (pid: 4109, threadinfo ffff8801801ea000, task ffff88011a4914a0) > Stack: > ffff8801801eba18 ffff880194909fa8 ffff880100000000 ffffffffa03280e8 > ffff8801801eba58 ffff88015ad4d9a0 0000000000000000 0000000000000000 > ffff8801801ea000 ffff880167a70140 ffff8801801eba78 ffffffffa0325d71 > Call Trace: > [] ? btrfs_run_delayed_refs+0xc8/0x210 [btrfs] > [] walk_up_tree+0x131/0x1b0 [btrfs] > [] btrfs_drop_snapshot+0x2c0/0x5c0 [btrfs] > [] ? btrfs_read_fs_root_no_name+0x1b0/0x280 [btrfs] > [] merge_reloc_roots+0xdf/0x150 [btrfs] > [] relocate_block_group+0x481/0x660 [btrfs] > [] ? btrfs_clean_old_snapshots+0x35/0x150 [btrfs] > [] btrfs_relocate_block_group+0x1b3/0x2e0 [btrfs] > [] ? btrfs_tree_unlock+0x50/0x50 [btrfs] > [] btrfs_relocate_chunk+0x8b/0x670 [btrfs] > [] ? btrfs_set_path_blocking+0x3d/0x50 [btrfs] > [] ? read_extent_buffer+0xd8/0x1d0 [btrfs] > [] ? btrfs_previous_item+0xb1/0x150 [btrfs] > [] ? read_extent_buffer+0xd8/0x1d0 [btrfs] > [] btrfs_balance+0x21a/0x2b0 [btrfs] > [] ? path_openat+0x101/0x3d0 > [] btrfs_ioctl+0x51c/0xc40 [btrfs] > [] ? handle_mm_fault+0x148/0x270 > [] ? do_page_fault+0x1d8/0x4b0 > [] do_vfs_ioctl+0x9a/0x540 > [] sys_ioctl+0xa1/0xb0 > [] system_call_fastpath+0x16/0x1b > Code: fe ff ff 0f 1f 00 4c 89 df 31 c9 4c 89 fa 4c 89 ee 44 89 55 c0 4c 89 5d b8 e8 c8 d5 ff ff 4c 8b 5d b8 44 8b 55 c0 e9 85 fe ff ff <0f> 0b eb fe 0f 1f 80 00 00 00 00 65 48 8b 14 25 c8 cc 00 00 48 > RIP [] walk_up_proc+0x375/0x420 [btrfs] > RSP > > >