http://bugzilla.novell.com/show_bug.cgi?id=1020030 http://bugzilla.novell.com/show_bug.cgi?id=1020030#c19 Randy Wright <rwright@hpe.com> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |rwright@hpe.com --- Comment #19 from Randy Wright <rwright@hpe.com> --- I just observed something quite similar running the SLES12SP3 kotd 4.4.79-2.g7fe2b65-default. I was testing crashdump, and as makedumpfile was completing successfully, I observed this on the serial console: [ 51.673736] ------------[ cut here ]------------ [ 51.673784] WARNING: CPU: 0 PID: 325 at ../fs/btrfs/qgroup.c:2466 btrfs_qgroup_free_refroot+0x14d/0x180 [btrfs]() [ 51.673812] Modules linked in: btrfs xor hid_generic usbhid uas ... [ 51.673813] Supported: Yes [ 51.673818] CPU: 0 PID: 325 Comm: umount Not tainted 4.4.79-2.g7fe2b65-default #1 [ 51.673819] Hardware name: HPE ProLiant.... [ 51.673824] 0000000000000000 ffffffff81320810 0000000000000000 ffffffffa03839e9 [ 51.673827] ffffffff8107e061 ffff8800624fc908 0000000000050000 ffff88027788ad80 [ 51.673829] ffff8800624fc880 ffff88027788a000 ffffffffa036b26d 0000000000000103 [ 51.673830] Call Trace: [ 51.673853] [<ffffffff81019b19>] dump_trace+0x59/0x310 [ 51.673862] [<ffffffff81019eba>] show_stack_log_lvl+0xea/0x170 [ 51.673868] [<ffffffff8101ac41>] show_stack+0x21/0x40 [ 51.673875] [<ffffffff81320810>] dump_stack+0x5c/0x7c [ 51.673884] [<ffffffff8107e061>] warn_slowpath_common+0x81/0xb0 umount: /kdump/mnt0: not mounted umount[ 51.673923] [<ffffffffa036b26d>] btrfs_qgroup_free_refroot+0x14d/0x180 [btrfs] If you want more detail from my sighting, I will need to create a confidental bugzilla, as this was seen on an as-yet-unreleased HPE system. I can relate that I have run many previous crashdump tests on this system and never previously seen a warning from btrfs_qgroup_free_refroot, so I can offer no clues for reproduction. -- You are receiving this mail because: You are on the CC list for the bug.