From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from cn.fujitsu.com ([59.151.112.132]:30264 "EHLO heian.cn.fujitsu.com" rhost-flags-OK-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S1750743AbaGCIZM convert rfc822-to-8bit (ORCPT ); Thu, 3 Jul 2014 04:25:12 -0400 Message-ID: <53B5125F.4070707@cn.fujitsu.com> Date: Thu, 3 Jul 2014 16:20:47 +0800 From: Wang Shilong MIME-Version: 1.0 To: , Marc MERLIN CC: Subject: Re: 3.15.1: kernel BUG at fs/btrfs/locking.c:269 References: <20140702204152.GI20961@merlins.org> <20140703081318.GB20612@localhost.localdomain> In-Reply-To: <20140703081318.GB20612@localhost.localdomain> Content-Type: text/plain; charset=US-ASCII; format=flowed Sender: linux-btrfs-owner@vger.kernel.org List-ID: On 07/03/2014 04:13 PM, Liu Bo wrote: > On Wed, Jul 02, 2014 at 01:41:52PM -0700, Marc MERLIN wrote: >> This got triggered by an rsync I think. I'm not sure which of my btrfs FS >> has the issue yet since BUG_ON isn't very helpful as discussed earlier. >> >> [160562.925463] parent transid verify failed on 2776298520576 wanted 41015 found 18120 >> [160562.950297] ------------[ cut here ]------------ >> [160562.965904] kernel BUG at fs/btrfs/locking.c:269! >> >> But shouldn't messages like 'parent transid verify failed' print which device >> this happened on to give the operator a hint on where the problem is? >> >> Could someone do a pass at those and make sure they all print the device >> ID/name? >> >> Bug below: >> >> Full log before the crash: >> INFO: task btrfs-transacti:3358 blocked for more than 120 seconds. >> Not tainted 3.15.1-amd64-i915-preempt-20140216jbp #1 >> "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. >> btrfs-transacti D 0000000000000000 0 3358 2 0x00000000 >> ffff8800c50ebc50 0000000000000046 ffff8800c50ebc20 ffff8800c50ebfd8 >> ffff8800c6914390 00000000000141c0 7fffffffffffffff ffff8801433b8f10 >> 0000000000000002 ffffffff8161c9b0 7fffffffffffffff ffff8800c50ebc60 >> Call Trace: >> [] ? sock_rps_reset_flow+0x32/0x32 >> [] schedule+0x73/0x75 >> [] schedule_timeout+0x39/0x129 >> [] ? get_parent_ip+0xd/0x3c >> [] ? preempt_count_add+0x7a/0x8d >> [] __wait_for_common+0x11a/0x159 >> [] ? wake_up_state+0x12/0x12 >> [] wait_for_completion+0x24/0x26 >> [] btrfs_wait_and_free_delalloc_work+0x16/0x28 >> [] btrfs_run_ordered_operations+0x1e7/0x21e >> [] btrfs_flush_all_pending_stuffs+0x4e/0x55 >> [] btrfs_commit_transaction+0x20d/0x8b0 >> [] transaction_kthread+0xf8/0x1ab >> [] ? btrfs_cleanup_transaction+0x44c/0x44c >> [] kthread+0xae/0xb6 >> [] ? __kthread_parkme+0x61/0x61 >> [] ret_from_fork+0x7c/0xb0 >> [] ? __kthread_parkme+0x61/0x61 >> INFO: task kworker/u8:13:13157 blocked for more than 120 seconds. >> Not tainted 3.15.1-amd64-i915-preempt-20140216jbp #1 >> "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. >> kworker/u8:13 D 0000000000000000 0 13157 2 0x00000080 >> Workqueue: btrfs-flush_delalloc normal_work_helper >> ffff8800041cfc00 0000000000000046 ffff8800041cfbd0 ffff8800041cffd8 >> ffff8800034f40d0 00000000000141c0 ffff88021f2941c0 ffff8800034f40d0 >> ffff8800041cfca0 ffffffff810fdc2f 0000000000000002 ffff8800041cfc10 >> Call Trace: >> [] ? wait_on_page_read+0x3c/0x3c >> [] schedule+0x73/0x75 >> [] io_schedule+0x60/0x7a >> [] sleep_on_page+0xe/0x12 >> [] __wait_on_bit+0x48/0x7a >> [] wait_on_page_bit+0x7a/0x7c >> [] ? autoremove_wake_function+0x34/0x34 >> [] filemap_fdatawait_range+0x7e/0x126 >> [] ? btrfs_submit_direct+0x3f4/0x3f4 >> [] ? btrfs_writepages+0x28/0x2a >> [] ? do_writepages+0x1e/0x2c >> [] ? __filemap_fdatawrite_range+0x55/0x57 >> [] btrfs_wait_ordered_range+0x6a/0x11a >> [] btrfs_run_delalloc_work+0x27/0x69 >> [] normal_work_helper+0xfe/0x240 >> [] process_one_work+0x195/0x2d2 >> [] worker_thread+0x136/0x205 >> [] ? process_scheduled_works+0x2f/0x2f >> [] kthread+0xae/0xb6 >> [] ? __kthread_parkme+0x61/0x61 >> [] ret_from_fork+0x7c/0xb0 >> [] ? __kthread_parkme+0x61/0x61 >> INFO: task btrfs-transacti:3358 blocked for more than 120 seconds. >> Not tainted 3.15.1-amd64-i915-preempt-20140216jbp #1 >> "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. >> btrfs-transacti D 0000000000000000 0 3358 2 0x00000000 >> ffff8800c50ebc50 0000000000000046 ffff8800c50ebc20 ffff8800c50ebfd8 >> ffff8800c6914390 00000000000141c0 7fffffffffffffff ffff8801433b8f10 >> 0000000000000002 ffffffff8161c9b0 7fffffffffffffff ffff8800c50ebc60 >> Call Trace: >> [] ? sock_rps_reset_flow+0x32/0x32 >> [] schedule+0x73/0x75 >> [] schedule_timeout+0x39/0x129 >> [] ? get_parent_ip+0xd/0x3c >> [] ? preempt_count_add+0x7a/0x8d >> [] __wait_for_common+0x11a/0x159 >> [] ? wake_up_state+0x12/0x12 >> [] wait_for_completion+0x24/0x26 >> [] btrfs_wait_and_free_delalloc_work+0x16/0x28 >> [] btrfs_run_ordered_operations+0x1e7/0x21e >> [] btrfs_flush_all_pending_stuffs+0x4e/0x55 >> [] btrfs_commit_transaction+0x20d/0x8b0 >> [] transaction_kthread+0xf8/0x1ab >> [] ? btrfs_cleanup_transaction+0x44c/0x44c >> [] kthread+0xae/0xb6 >> [] ? __kthread_parkme+0x61/0x61 >> [] ret_from_fork+0x7c/0xb0 >> [] ? __kthread_parkme+0x61/0x61 >> INFO: task kworker/u8:13:13157 blocked for more than 120 seconds. >> Not tainted 3.15.1-amd64-i915-preempt-20140216jbp #1 >> "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. >> kworker/u8:13 D 0000000000000000 0 13157 2 0x00000080 >> Workqueue: btrfs-flush_delalloc normal_work_helper >> ffff8800041cfc00 0000000000000046 ffff8800041cfbd0 ffff8800041cffd8 >> ffff8800034f40d0 00000000000141c0 ffff88021f2941c0 ffff8800034f40d0 >> ffff8800041cfca0 ffffffff810fdc2f 0000000000000002 ffff8800041cfc10 >> Call Trace: >> [] ? wait_on_page_read+0x3c/0x3c >> [] schedule+0x73/0x75 >> [] io_schedule+0x60/0x7a >> [] sleep_on_page+0xe/0x12 >> [] __wait_on_bit+0x48/0x7a >> [] wait_on_page_bit+0x7a/0x7c >> [] ? autoremove_wake_function+0x34/0x34 >> [] filemap_fdatawait_range+0x7e/0x126 >> [] ? btrfs_submit_direct+0x3f4/0x3f4 >> [] ? btrfs_writepages+0x28/0x2a >> [] ? do_writepages+0x1e/0x2c >> [] ? __filemap_fdatawrite_range+0x55/0x57 >> [] btrfs_wait_ordered_range+0x6a/0x11a >> [] btrfs_run_delalloc_work+0x27/0x69 >> [] normal_work_helper+0xfe/0x240 >> [] process_one_work+0x195/0x2d2 >> [] worker_thread+0x136/0x205 >> [] ? process_scheduled_works+0x2f/0x2f >> [] kthread+0xae/0xb6 >> [] ? __kthread_parkme+0x61/0x61 >> [] ret_from_fork+0x7c/0xb0 >> [] ? __kthread_parkme+0x61/0x61 >> parent transid verify failed on 2776298520576 wanted 41015 found 18120 >> ------------[ cut here ]------------ >> kernel BUG at fs/btrfs/locking.c:269! >> invalid opcode: 0000 [#1] PREEMPT SMP >> Modules linked in: udp_diag tcp_diag inet_diag ip6table_filter ip6_tables ebtable_nat ebtables tun ppdev lp autofs4 binfmt_misc kl5kusb105 deflate ctr twofish_avx_x86_64 twofish_x86_64_3way twofish_x86_64 twofish_generic twofish_common camellia_x86_64 camellia_generic serpent_avx_x86_64 serpent_sse2_x86_64 glue_helper lrw serpent_generic blowfish_x86_64 blowfish_generic blowfish_common cast5_avx_x86_64 ablk_helper cast5_generic cast_common des_generic cmac xcbc rmd160 sha512_ssse3 sha512_generic ftdi_sio crypto_null keyspan af_key xfrm_algo dm_mirror dm_region_hash dm_log nfsd nfs_acl auth_rpcgss nfs fscache lockd sunrpc ipt_REJECT xt_conntrack xt_nat xt_tcpudp xt_LOG iptable_mangle iptable_filter aes_x86_64 lm85 hwmon_vid dm_snapshot dm_bufio iptable_nat ip_tables nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4 nf_conntrack_ftp ipt_MASQUERADE nf_nat x_tables nf_conntrack sg st snd_pcm_oss snd_mixer_oss fuse eeepc_wmi snd_hda_codec_realtek snd_hda_codec_generic asus_wmi micro! > co! >> de snd_cmipci gameport sparse_keymap kvm_intel snd_hda_intel snd_opl3_lib rfkill kvm snd_mpu401_uart snd_seq_midi tpm_infineon snd_seq_midi_event snd_hda_controller snd_hda_codec rc_ati_x10 snd_hwdep snd_pcm snd_seq snd_rawmidi ati_remote asix battery coretemp libphy processor snd_seq_device snd_timer wmi usbnet evdev rc_core tpm_tis intel_rapl parport_pc snd parport tpm pcspkr lpc_ich i2c_i801 pl2303 xhci_hcd intel_powerclamp ezusb soundcore x86_pkg_temp_thermal usbserial xts gf128mul dm_crypt dm_mod raid456 async_raid6_recov async_pq async_xor async_memcpy async_tx e1000e ptp pps_core crc32c_intel ghash_clmulni_intel sata_sil24 cryptd crct10dif_pclmul r8169 ehci_pci thermal ehci_hcd crc32_pclmul fan mii sata_mv usbcore usb_common [last unloaded: kl5kusb105] >> CPU: 0 PID: 25515 Comm: kworker/u8:2 Not tainted 3.15.1-amd64-i915-preempt-20140216jbp #1 >> Hardware name: System manufacturer System Product Name/P8H67-M PRO, BIOS 3806 08/20/2012 >> Workqueue: btrfs-endio-write normal_work_helper >> task: ffff880019d58610 ti: ffff880004c24000 task.ti: ffff880004c24000 >> RIP: 0010:[] [] btrfs_assert_tree_read_locked+0x10/0x14 >> RSP: 0018:ffff880004c27848 EFLAGS: 00010246 >> RAX: 0000000000000000 RBX: ffff8800353cadd0 RCX: 0000000000000000 >> RDX: 000000000000001e RSI: ffff8801d6e46e10 RDI: ffff8800353cadd0 >> RBP: ffff880004c27848 R08: 0000000000000000 R09: ffff880041c943c8 >> R10: ffffffffffffffff R11: 0000000000000000 R12: 000000000000a037 >> R13: 0000000000000001 R14: ffff88020f032c00 R15: ffff8801957d201f >> FS: 0000000000000000(0000) GS:ffff88021f200000(0000) knlGS:0000000000000000 >> CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 >> CR2: 00000000f777c064 CR3: 0000000045787000 CR4: 00000000000407f0 >> Stack: >> ffff880004c27868 ffffffff812578bd ffff8800353cadd0 000000000000a037 >> ffff880004c278b0 ffffffff81224799 0000000000000000 0000000000000000 >> 0000000000000000 0000000000000000 0000000000000000 ffff8802121b2800 >> Call Trace: >> [] btrfs_tree_read_unlock_blocking+0x5c/0xb7 >> [] verify_parent_transid+0x138/0x150 >> [] btree_read_extent_buffer_pages.constprop.45+0x7f/0x100 >> [] btrfs_read_buffer+0x2c/0x2e >> [] read_block_for_search.isra.26+0xae/0x287 >> [] btrfs_search_old_slot+0x3e6/0x6bc >> [] ? release_extent_buffer+0xad/0xb8 >> [] __resolve_indirect_refs+0x16c/0x50d >> [] find_parent_nodes+0x8e6/0x90a >> [] __btrfs_find_all_roots+0x82/0xe0 >> [] btrfs_find_all_roots+0x4a/0x6a >> [] btrfs_qgroup_account_ref+0x10c/0x403 >> [] ? __cache_free.isra.40+0x1b4/0x1c3 >> [] btrfs_delayed_refs_qgroup_accounting+0xb5/0xe8 >> [] __btrfs_end_transaction+0x60/0x2cd >> [] btrfs_end_transaction+0x10/0x12 >> [] btrfs_finish_ordered_io+0x307/0x3bd >> [] finish_ordered_fn+0x15/0x17 >> [] normal_work_helper+0xfe/0x240 >> [] process_one_work+0x195/0x2d2 >> [] worker_thread+0x136/0x205 >> [] ? process_scheduled_works+0x2f/0x2f >> [] kthread+0xae/0xb6 >> [] ? __kthread_parkme+0x61/0x61 >> [] ret_from_fork+0x7c/0xb0 >> [] ? __kthread_parkme+0x61/0x61 >> Code: 89 e5 f0 ff 0f 5d c3 55 48 89 e5 f0 ff 0f 74 04 31 c0 eb 05 b8 01 00 00 00 5d c3 66 66 66 66 90 8b 47 58 55 48 89 e5 85 c0 75 02 <0f> 0b 5d c3 66 66 66 66 90 55 48 89 e5 41 55 41 89 f5 41 54 53 >> RIP [] btrfs_assert_tree_read_locked+0x10/0x14 >> RSP >> ---[ end trace b88f907c1447016f ]--- >> Kernel panic - not syncing: Fatal exception >> Kernel Offset: 0x0 from 0xffffffff81000000 (relocation range: 0xffffffff80000000-0xffffffff9fffffff) >> drm_kms_helper: panic occurred, switching back to text console >> Rebooting in 20 seconds.. >> ACPI MEMORY or I/O RESET_REG. >> > After looking at the stack, it seems that we lack a check for @need_lock since eb > is taking it when @need_lock is true, could you please try this? Josef also sent a patch to address this problem before. https://patchwork.kernel.org/patch/4424521/ > > thanks, > -liubo > > diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c > index 8bb4aa1..f00165d 100644 > --- a/fs/btrfs/disk-io.c > +++ b/fs/btrfs/disk-io.c > @@ -369,7 +369,8 @@ static int verify_parent_transid(struct extent_io_tree > *io_tree, > out: > unlock_extent_cached(io_tree, eb->start, eb->start + eb->len - 1, > &cached_state, GFP_NOFS); > - btrfs_tree_read_unlock_blocking(eb); > + if (need_lock) > + btrfs_tree_read_unlock_blocking(eb); > return ret; > } > > -- > 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 > . >