Would it be possible for you to test the latest upstream stable kernel? Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest v4.4 stable kernel[0].
If this bug is fixed in the mainline kernel, please add the following tag 'kernel-fixed-upstream'. If the mainline kernel does not fix this bug, please add the tag: 'kernel-bug-exists-upstream'. If you are unable to test the mainline kernel, for example it will not boot, please add the tag: 'kernel-unable-to-test-upstream'. Once testing of the upstream kernel is complete, please mark this bug as "Confirmed". Thanks in advance. [0] http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.4.49 ** Changed in: linux (Ubuntu) Importance: Undecided => High ** Tags added: kernel-da-key ** Also affects: linux (Ubuntu Xenial) Importance: Undecided Status: New ** Changed in: linux (Ubuntu Xenial) Importance: Undecided => High ** Changed in: linux (Ubuntu Xenial) Status: New => Incomplete -- You received this bug notification because you are a member of नेपाली भाषा समायोजकहरुको समूह, which is subscribed to Xenial. Matching subscriptions: Ubuntu 16.04 Bugs https://bugs.launchpad.net/bugs/1665576 Title: btrfs lockup with linux-image-4.4.0-59-generic Status in linux package in Ubuntu: Incomplete Status in linux source package in Xenial: Incomplete Bug description: After upgrading server (xen pvm) to linux-image-4.4.0-59-generic from 4.4.0-57 it locked up soon after using the btrfs filesystem. (Startup looked OK.) No problem with 4.4.0-57. Standard 16.04 stable install. Reverting to 4.4.0-57 fixed the problem, just sharing to help others with similar issue and have a chance to hear if it's a known problem. (I did not find one.) Feb 2 10:06:36 server1 kernel: [10484.092006] NMI watchdog: BUG: soft lockup - CPU#5 stuck for 23s! [apache2:1704] ... Feb 2 10:06:36 server1 kernel: [10484.092043] Call Trace: Feb 2 10:06:36 server1 kernel: [10484.092043] [<ffffffff818381d3>] _raw_read_lock+0x23/0x30 Feb 2 10:06:36 server1 kernel: [10484.092043] [<ffffffffc017f80a>] btrfs_tree_read_lock_atomic+0x2a/0x60 [btrfs] Feb 2 10:06:36 server1 kernel: [10484.092043] [<ffffffffc011daff>] btrfs_search_slot+0x59f/0xa00 [btrfs] Feb 2 10:06:36 server1 kernel: [10484.092043] [<ffffffffc011890a>] ? btrfs_alloc_path+0x1a/0x20 [btrfs] Feb 2 10:06:36 server1 kernel: [10484.092043] [<ffffffff810caf11>] ? __raw_callee_save___pv_queued_spin_unlock+0x11/0x20 Feb 2 10:06:36 server1 kernel: [10484.092043] [<ffffffffc0136a8e>] btrfs_lookup_csum+0x4e/0x150 [btrfs] Feb 2 10:06:36 server1 kernel: [10484.092043] [<ffffffffc0136d3c>] __btrfs_lookup_bio_sums.isra.7+0x1ac/0x500 [btrfs] Feb 2 10:06:36 server1 kernel: [10484.092043] [<ffffffffc01486c0>] ? btrfs_real_readdir+0x5e0/0x5e0 [btrfs] Feb 2 10:06:36 server1 kernel: [10484.092043] [<ffffffff811ed017>] ? kmem_cache_alloc+0x187/0x1f0 Feb 2 10:06:36 server1 kernel: [10484.092043] [<ffffffffc013ca98>] ? btrfs_bio_wq_end_io+0x28/0x70 [btrfs] Feb 2 10:06:36 server1 kernel: [10484.092043] [<ffffffffc0137316>] btrfs_lookup_bio_sums+0x36/0x40 [btrfs] Feb 2 10:06:36 server1 kernel: [10484.092043] [<ffffffffc0145f13>] btrfs_submit_bio_hook+0x133/0x1b0 [btrfs] Feb 2 10:06:36 server1 kernel: [10484.092043] [<ffffffffc016059d>] submit_one_bio+0x6d/0xa0 [btrfs] Feb 2 10:06:36 server1 kernel: [10484.092043] [<ffffffffc01673c3>] extent_readpages+0x143/0x200 [btrfs] Feb 2 10:06:36 server1 kernel: [10484.092043] [<ffffffffc01486c0>] ? btrfs_real_readdir+0x5e0/0x5e0 [btrfs] Feb 2 10:06:36 server1 kernel: [10484.092043] [<ffffffff811e271c>] ? alloc_pages_current+0x8c/0x110 Feb 2 10:06:36 server1 kernel: [10484.092043] [<ffffffffc014632f>] btrfs_readpages+0x1f/0x30 [btrfs] Feb 2 10:06:36 server1 kernel: [10484.092043] [<ffffffff8119db06>] __do_page_cache_readahead+0x196/0x230 Feb 2 10:06:36 server1 kernel: [10484.092043] [<ffffffff81218ef4>] ? terminate_walk+0x64/0xd0 Feb 2 10:06:36 server1 kernel: [10484.092043] [<ffffffff8119dc70>] ondemand_readahead+0xd0/0x250 Feb 2 10:06:36 server1 kernel: [10484.092043] [<ffffffff8119df8e>] page_cache_sync_readahead+0x2e/0x50 Feb 2 10:06:36 server1 kernel: [10484.092043] [<ffffffff8119089d>] generic_file_read_iter+0x4ad/0x5c0 Feb 2 10:06:36 server1 kernel: [10484.092043] [<ffffffff8120e394>] new_sync_read+0x94/0xd0 Feb 2 10:06:36 server1 kernel: [10484.092043] [<ffffffff8120e3f6>] __vfs_read+0x26/0x40 Feb 2 10:06:36 server1 kernel: [10484.092043] [<ffffffff8120e9b6>] vfs_read+0x86/0x130 Feb 2 10:06:36 server1 kernel: [10484.092043] [<ffffffff8120f705>] SyS_read+0x55/0xc0 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1665576/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~group.of.nepali.translators Post to : group.of.nepali.translators@lists.launchpad.net Unsubscribe : https://launchpad.net/~group.of.nepali.translators More help : https://help.launchpad.net/ListHelp
