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Forum Discussion
6.8.0 Kernel warning
Hello all,
There is something wrong in the was the 6.8.0 has been compiled. 6.7.5 has no such issues. Since this is a problem in the BTRFS module I believe this should be fixed asap in order to gice us the peace of mind that our data remains secure.
Linux netgear-nas 4.4.79.alpine.1 #1 SMP Mon Jul 31 15:19:36 PDT 2017 armv7l GNU/Linux [20904.832521] ------------[ cut here ]------------ [20904.832536] WARNING: CPU: 0 PID: 4707 at fs/btrfs/qgroup.c:2480 btrfs_qgroup_free_refroot+0x180/0x1a0() [20904.832542] Modules linked in: vpd(PO) [20904.832555] CPU: 0 PID: 4707 Comm: kworker/u2:8 Tainted: P W O 4.4.79.armada.1 #1 [20904.832562] Hardware name: Marvell Armada 370/XP (Device Tree) [20904.832572] Workqueue: btrfs-extent-refs btrfs_extent_refs_helper [20904.832589] [<c0015f24>] (unwind_backtrace) from [<c00120dc>] (show_stack+0x10/0x18) [20904.832603] [<c00120dc>] (show_stack) from [<c0392720>] (dump_stack+0x78/0x9c) [20904.832618] [<c0392720>] (dump_stack) from [<c0024928>] (warn_slowpath_common+0x74/0xac) [20904.832631] [<c0024928>] (warn_slowpath_common) from [<c002497c>] (warn_slowpath_null+0x1c/0x28) [20904.832644] [<c002497c>] (warn_slowpath_null) from [<c0318ae0>] (btrfs_qgroup_free_refroot+0x180/0x1a0) [20904.832658] [<c0318ae0>] (btrfs_qgroup_free_refroot) from [<c028a924>] (__btrfs_run_delayed_refs+0x328/0x113c) [20904.832672] [<c028a924>] (__btrfs_run_delayed_refs) from [<c02915c8>] (btrfs_run_delayed_refs+0x60/0x2b0) [20904.832685] [<c02915c8>] (btrfs_run_delayed_refs) from [<c0291c40>] (delayed_ref_async_start+0xa4/0xb0) [20904.832698] [<c0291c40>] (delayed_ref_async_start) from [<c02dbc28>] (normal_work_helper+0x84/0x1a4) [20904.832712] [<c02dbc28>] (normal_work_helper) from [<c0037f14>] (process_one_work+0x11c/0x334) [20904.832724] [<c0037f14>] (process_one_work) from [<c0038198>] (worker_thread+0x34/0x474) [20904.832736] [<c0038198>] (worker_thread) from [<c003d20c>] (kthread+0x104/0x124) [20904.832747] [<c003d20c>] (kthread) from [<c000f568>] (ret_from_fork+0x14/0x2c) [20904.832754] ---[ end trace b127ec432b47814a ]---
And these messages are being repeated in thei thousands.
6 Replies
Which NAS model?
I'm not seeing this on the RN52x, so it must be arm-specific.
Indeed it might be ARM related, the models are RN102 and RN202, both are showing the same warnings.
This issue is neither new nor common, but the message is new. The error has no effect on data safety or anything related to that.
In the next firmware release 6.8.1 you should no longer see this message.
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