When trying to run xfstests on gfs2 (locally with the lock_nolock cluster managed) the first mount already hits this warning in inode_to_wb called from mark_buffer_dirty. This all seems standard code from folio_account_dirtied, so not sure what is going there. [ 30.440408] ------------[ cut here ]------------ [ 30.440409] WARNING: CPU: 1 PID: 931 at include/linux/backing-dev.h:261 __folio_mark_dirty+0x2f0/0x380 [ 30.446424] Modules linked in: [ 30.446828] CPU: 1 PID: 931 Comm: kworker/1:2 Not tainted 5.19.0-rc2+ #1702 [ 30.447714] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-2 04/01/2014 [ 30.448770] Workqueue: gfs_recovery gfs2_recover_func [ 30.449441] RIP: 0010:__folio_mark_dirty+0x2f0/0x380 [ 30.450113] Code: e8 b5 69 12 01 85 c0 0f 85 6a fe ff ff 48 8b 83 a8 01 00 00 be ff ff ff ff 48 8d 78 2 [ 30.452490] RSP: 0018:ffffc90001b77bd0 EFLAGS: 00010046 [ 30.453141] RAX: 0000000000000000 RBX: ffff8881004a3d00 RCX: 0000000000000001 [ 30.454067] RDX: 0000000000000000 RSI: ffffffff82f592db RDI: ffffffff830380ae [ 30.454970] RBP: ffffea000455f680 R08: 0000000000000001 R09: ffffffff84747570 [ 30.455921] R10: 0000000000000017 R11: ffff88810260b1c0 R12: 0000000000000282 [ 30.456910] R13: ffff88810dd92170 R14: 0000000000000001 R15: 0000000000000001 [ 30.457871] FS: 0000000000000000(0000) GS:ffff88813bd00000(0000) knlGS:0000000000000000 [ 30.458912] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 30.459608] CR2: 00007efc1d5adc80 CR3: 0000000116416000 CR4: 00000000000006e0 [ 30.460564] Call Trace: [ 30.460871] <TASK> [ 30.461130] mark_buffer_dirty+0x173/0x1d0 [ 30.461687] update_statfs_inode+0x146/0x187 [ 30.462276] gfs2_recover_func.cold+0x48f/0x864 [ 30.462875] ? add_lock_to_list+0x8b/0xf0 [ 30.463337] ? __lock_acquire+0xf7e/0x1e30 [ 30.463812] ? lock_acquire+0xd4/0x300 [ 30.464267] ? lock_acquire+0xe4/0x300 [ 30.464715] ? gfs2_recover_func.cold+0x217/0x864 [ 30.465334] process_one_work+0x239/0x550 [ 30.465920] ? process_one_work+0x550/0x550 [ 30.466485] worker_thread+0x4d/0x3a0 [ 30.466966] ? process_one_work+0x550/0x550 [ 30.467509] kthread+0xe2/0x110 [ 30.467941] ? kthread_complete_and_exit+0x20/0x20 [ 30.468558] ret_from_fork+0x22/0x30 [ 30.469047] </TASK> [ 30.469346] irq event stamp: 36146 [ 30.469796] hardirqs last enabled at (36145): [<ffffffff8139185c>] folio_memcg_lock+0x8c/0x180 [ 30.470919] hardirqs last disabled at (36146): [<ffffffff82429799>] _raw_spin_lock_irqsave+0x59/0x60 [ 30.472024] softirqs last enabled at (33630): [<ffffffff81157307>] __irq_exit_rcu+0xd7/0x130 [ 30.473051] softirqs last disabled at (33619): [<ffffffff81157307>] __irq_exit_rcu+0xd7/0x130 [ 30.474107] ---[ end trace 0000000000000000 ]--- [ 30.475367] ------------[ cut here ]------------