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  1. Bug #1566518
  2. Activity log

Activity log for bug #1566518

Date Who What changed Old value New value Message
2016-04-05 20:21:49 dann frazier bug added bug
2016-04-05 20:21:49 dann frazier attachment added bug.txt https://bugs.launchpad.net/bugs/1566518/+attachment/4625164/+files/bug.txt
2016-04-06 08:46:50 Tim Gardner nominated for series Ubuntu Xenial
2016-04-06 08:46:50 Tim Gardner bug task added linux (Ubuntu Xenial)
2016-04-06 08:46:59 Tim Gardner linux (Ubuntu Xenial): status In Progress Fix Committed
2016-04-06 18:18:42 dann frazier description On 2 socket ThunderX systems, a BUG() is triggered by the ext4 filesystem shortly after boot: [ 230.637307] Call trace: [ 230.641753] [<ffff8000002eac90>] mpage_prepare_extent_to_map+0x270/0x290 [ 230.650515] [<ffff8000002eefe0>] ext4_writepages+0x3b0/0xc10 [ 230.658259] [<ffff8000001dcd88>] do_writepages+0x40/0x70 [ 230.665639] [<ffff800000287988>] __writeback_single_inode+0x48/0x3c8 [ 230.674071] [<ffff800000288200>] writeback_sb_inodes+0x220/0x440 [ 230.682161] [<ffff8000002884c4>] __writeback_inodes_wb+0xa4/0xe8 [ 230.690242] [<ffff800000288858>] wb_writeback+0x260/0x338 [ 230.697704] [<ffff800000289300>] wb_workfn+0x348/0x478 [ 230.704879] [<ffff8000000ddc9c>] process_one_work+0x164/0x458 [ 230.712661] [<ffff8000000de0bc>] worker_thread+0x12c/0x4b8 [ 230.720164] [<ffff8000000e4e90>] kthread+0xf8/0x110 [ 230.727030] [<ffff800000085c10>] ret_from_fork+0x10/0x40 [ 230.734301] Code: a94573fb a8cf7bfd d65f03c0 d503201f (d4210000) [ 230.742400] ---[ end trace 600acdba70af5dd0 ]--- On 2 socket ThunderX systems, a BUG() is triggered by the ext4 filesystem shortly after boot: [ 230.637307] Call trace: [ 230.641753] [<ffff8000002eac90>] mpage_prepare_extent_to_map+0x270/0x290 [ 230.650515] [<ffff8000002eefe0>] ext4_writepages+0x3b0/0xc10 [ 230.658259] [<ffff8000001dcd88>] do_writepages+0x40/0x70 [ 230.665639] [<ffff800000287988>] __writeback_single_inode+0x48/0x3c8 [ 230.674071] [<ffff800000288200>] writeback_sb_inodes+0x220/0x440 [ 230.682161] [<ffff8000002884c4>] __writeback_inodes_wb+0xa4/0xe8 [ 230.690242] [<ffff800000288858>] wb_writeback+0x260/0x338 [ 230.697704] [<ffff800000289300>] wb_workfn+0x348/0x478 [ 230.704879] [<ffff8000000ddc9c>] process_one_work+0x164/0x458 [ 230.712661] [<ffff8000000de0bc>] worker_thread+0x12c/0x4b8 [ 230.720164] [<ffff8000000e4e90>] kthread+0xf8/0x110 [ 230.727030] [<ffff800000085c10>] ret_from_fork+0x10/0x40 [ 230.734301] Code: a94573fb a8cf7bfd d65f03c0 d503201f (d4210000) [ 230.742400] ---[ end trace 600acdba70af5dd0 ]--- This was root caused to an issue with PTE bits that ext4 trips over when doing a PageWriteback() check.
2016-04-08 16:40:06 Launchpad Janitor linux (Ubuntu Xenial): status Fix Committed Fix Released