This didn't make it to the list, probably because of the attachment, so dmesg is attached to this bug: https://bugzilla.kernel.org/show_bug.cgi?id=114541 On Sun, Mar 13, 2016 at 3:37 PM, Chris Murphy <lists@xxxxxxxxxxxxxxxxx> wrote: > Today I saw two warnings during a filtered balance, -dusage=50 -musage=50. > > [61425.186172] [<ffffffff813d497f>] dump_stack+0x63/0x84 > [61425.186176] [<ffffffff810a6142>] warn_slowpath_common+0x82/0xc0 > [61425.186178] [<ffffffff810a61dc>] warn_slowpath_fmt+0x5c/0x80 > [61425.186183] [<ffffffff813da662>] ? ___ratelimit+0xb2/0x100 > [61425.186198] [<ffffffffa05105f7>] btrfs_alloc_tree_block+0x417/0x500 [btrfs] > [61425.186201] [<ffffffff810e1db7>] ? update_sd_lb_stats+0x107/0x500 > [61425.186214] [<ffffffffa04f7022>] btrfs_copy_root+0x102/0x2b0 [btrfs] > [61425.186232] [<ffffffffa05709cd>] create_reloc_root+0x19d/0x220 [btrfs] > [61425.186249] [<ffffffffa0576b66>] btrfs_init_reloc_root+0x96/0xb0 [btrfs] > [61425.186264] [<ffffffffa051fee4>] record_root_in_trans+0xa4/0x100 [btrfs] > [61425.186279] [<ffffffffa05216d4>] > btrfs_record_root_in_trans+0x44/0x70 [btrfs] > [61425.186293] [<ffffffffa0522906>] start_transaction+0x96/0x4a0 [btrfs] > [61425.186308] [<ffffffffa0522d67>] btrfs_join_transaction+0x17/0x20 [btrfs] > [61425.186322] [<ffffffffa0528cec>] btrfs_dirty_inode+0x3c/0xd0 [btrfs] > [61425.186336] [<ffffffffa0528dfd>] btrfs_update_time+0x7d/0xb0 [btrfs] > [61425.186340] [<ffffffff8125dfdd>] file_update_time+0xbd/0x110 > [61425.186355] [<ffffffffa05330e9>] btrfs_page_mkwrite+0xc9/0x3f0 [btrfs] > [61425.186357] [<ffffffff810de475>] ? put_prev_entity+0x35/0x7f0 > [61425.186361] [<ffffffff811e63da>] do_page_mkwrite+0x7a/0x120 > [61425.186364] [<ffffffff811e89f9>] do_wp_page+0x1a9/0x890 > [61425.186367] [<ffffffff811eb848>] handle_mm_fault+0x818/0x1bd0 > [61425.186369] [<ffffffff810696c5>] __do_page_fault+0x195/0x400 > [61425.186372] [<ffffffff81069960>] do_page_fault+0x30/0x80 > [61425.186374] [<ffffffff81003d19>] ? syscall_return_slowpath+0x79/0xb0 > [61425.186378] [<ffffffff817cfec8>] page_fault+0x28/0x30 > [61425.186399] ---[ end trace 2c5c3c76646758b9 ]--- > > There is, since kernel 4.4.x this dump_pagetables message that happens > every boot, that taints the kernel. > WARNING: CPU: 0 PID: 1 at arch/x86/mm/dump_pagetables.c:225 > note_page+0x635/0x7e0() > > Including entire dmesg as attachment. So far no apparent negative > consequence, the balance completes normally. -- Chris Murphy -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
