------------[ cut here ]------------ WARNING: CPU: 1 PID: 1596 at include/linux/backing-dev.h:247 inode_to_wb include/linux/backing-dev.h:243 [inline] WARNING: CPU: 1 PID: 1596 at include/linux/backing-dev.h:247 folio_account_dirtied mm/page-writeback.c:2587 [inline] WARNING: CPU: 1 PID: 1596 at include/linux/backing-dev.h:247 __folio_mark_dirty+0x8a0/0xcd8 mm/page-writeback.c:2638 Modules linked in: CPU: 1 PID: 1596 Comm: kworker/u4:4 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 Workqueue: writeback wb_workfn (flush-7:2) pstate: 824000c5 (Nzcv daIF +PAN -UAO +TCO -DIT -SSBS BTYPE=--) pc : inode_to_wb include/linux/backing-dev.h:243 [inline] pc : folio_account_dirtied mm/page-writeback.c:2587 [inline] pc : __folio_mark_dirty+0x8a0/0xcd8 mm/page-writeback.c:2638 lr : inode_to_wb include/linux/backing-dev.h:243 [inline] lr : folio_account_dirtied mm/page-writeback.c:2587 [inline] lr : __folio_mark_dirty+0x8a0/0xcd8 mm/page-writeback.c:2638 sp : ffff800024e070a0 x29: ffff800024e070c0 x28: 1fffff80006a94d0 x27: dfff800000000000 x26: 0000000000000000 x25: ffff0000c54d5490 x24: 0000000000000001 x23: 0000000000000000 x22: fffffc000354a688 x21: 1fffe00018a9aa92 x20: ffff0000cc580c40 x19: fffffc000354a680 x18: ffff800011b7bf60 x17: ffff800018338000 x16: ffff8000082d7e60 x15: ffff800017e19000 x14: ffff7000049c0df8 x13: 1ffff000049c0df8 x12: 0000000000ff0100 x11: ff00800008708680 x10: 0000000000000000 x9 : ffff800008708680 x8 : ffff0000cfc01bc0 x7 : 0000000000000000 x6 : 0000000000000000 x5 : 0000000000000020 x4 : 0000000000000000 x3 : ffff8000082eec58 x2 : 0000000000000001 x1 : 0000000000000000 x0 : 0000000000000000 Call trace: inode_to_wb include/linux/backing-dev.h:243 [inline] folio_account_dirtied mm/page-writeback.c:2587 [inline] __folio_mark_dirty+0x8a0/0xcd8 mm/page-writeback.c:2638 __set_page_dirty include/linux/pagemap.h:1090 [inline] mark_buffer_dirty+0x2b8/0x5c0 fs/buffer.c:1105 gfs2_unpin+0x120/0x8fc fs/gfs2/lops.c:111 buf_lo_after_commit+0x140/0x188 fs/gfs2/lops.c:747 lops_after_commit fs/gfs2/lops.h:49 [inline] gfs2_log_flush+0xbf0/0x1b10 fs/gfs2/log.c:1116 gfs2_write_inode+0x184/0x34c fs/gfs2/super.c:453 write_inode fs/fs-writeback.c:1470 [inline] __writeback_single_inode+0x5e0/0x1554 fs/fs-writeback.c:1687 writeback_sb_inodes+0x858/0x143c fs/fs-writeback.c:1913 wb_writeback+0x414/0xfcc fs/fs-writeback.c:2087 wb_do_writeback fs/fs-writeback.c:2230 [inline] wb_workfn+0x360/0xe18 fs/fs-writeback.c:2270 process_one_work+0x7f8/0x13a4 kernel/workqueue.c:2292 worker_thread+0x8c4/0xfec kernel/workqueue.c:2439 kthread+0x250/0x2d8 kernel/kthread.c:376 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:850 irq event stamp: 51978 hardirqs last enabled at (51977): [] folio_memcg_lock+0xe8/0x1f4 mm/memcontrol.c:2113 hardirqs last disabled at (51978): [] __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:108 [inline] hardirqs last disabled at (51978): [] _raw_spin_lock_irqsave+0xa4/0xb0 kernel/locking/spinlock.c:162 softirqs last enabled at (51968): [] softirq_handle_end kernel/softirq.c:439 [inline] softirqs last enabled at (51968): [] handle_softirqs+0xaec/0xc60 kernel/softirq.c:624 softirqs last disabled at (51913): [] __do_softirq+0x14/0x20 kernel/softirq.c:630 ---[ end trace 0000000000000000 ]--- ------------[ cut here ]------------ WARNING: CPU: 0 PID: 1596 at include/linux/backing-dev.h:247 inode_to_wb include/linux/backing-dev.h:243 [inline] WARNING: CPU: 0 PID: 1596 at include/linux/backing-dev.h:247 __folio_start_writeback+0x88c/0xa7c mm/page-writeback.c:3003 Modules linked in: CPU: 0 PID: 1596 Comm: kworker/u4:4 Tainted: G W syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 Workqueue: writeback wb_workfn (flush-7:2) pstate: 824000c5 (Nzcv daIF +PAN -UAO +TCO -DIT -SSBS BTYPE=--) pc : inode_to_wb include/linux/backing-dev.h:243 [inline] pc : __folio_start_writeback+0x88c/0xa7c mm/page-writeback.c:3003 lr : inode_to_wb include/linux/backing-dev.h:243 [inline] lr : __folio_start_writeback+0x88c/0xa7c mm/page-writeback.c:3003 sp : ffff800024e06c80 x29: ffff800024e06d60 x28: dfff800000000000 x27: 0000000000000000 x26: ffff7000049c0d98 x25: 0000000000000000 x24: ffff0000cc8282a0 x23: ffff800024e06ce0 x22: ffff0000c54d52e8 x21: 0000000000000001 x20: fffffc0003dcdc88 x19: fffffc0003dcdc80 x18: ffff800011b7bf60 x17: ffff800018338000 x16: ffff8000082d7e60 x15: 0000000000000000 x14: 0000000000000001 x13: 1fffff80007b9b90 x12: 0000000000ff0100 x11: ff0080000870ab8c x10: 0000000000000000 x9 : ffff80000870ab8c x8 : ffff0000cfc01bc0 x7 : ffff80000870a5f8 x6 : 0000000000000000 x5 : 0000000000000080 x4 : 0000000000000001 x3 : ffff80000870a638 x2 : 0000000000000001 x1 : 0000000000000000 x0 : 0000000000000000 Call trace: inode_to_wb include/linux/backing-dev.h:243 [inline] __folio_start_writeback+0x88c/0xa7c mm/page-writeback.c:3003 set_page_writeback+0x5c/0x7c mm/folio-compat.c:56 gfs2_aspace_writepage+0x514/0x6dc fs/gfs2/meta_io.c:73 __writepage+0x70/0x184 mm/page-writeback.c:2447 write_cache_pages+0x74c/0xde8 mm/page-writeback.c:2382 generic_writepages mm/page-writeback.c:2473 [inline] do_writepages+0x318/0x504 mm/page-writeback.c:2493 filemap_fdatawrite_wbc+0x124/0x174 mm/filemap.c:388 __filemap_fdatawrite_range mm/filemap.c:421 [inline] __filemap_fdatawrite mm/filemap.c:427 [inline] filemap_fdatawrite+0xd0/0x12c mm/filemap.c:432 gfs2_write_inode+0x234/0x34c fs/gfs2/super.c:459 write_inode fs/fs-writeback.c:1470 [inline] __writeback_single_inode+0x5e0/0x1554 fs/fs-writeback.c:1687 writeback_sb_inodes+0x858/0x143c fs/fs-writeback.c:1913 wb_writeback+0x414/0xfcc fs/fs-writeback.c:2087 wb_do_writeback fs/fs-writeback.c:2230 [inline] wb_workfn+0x360/0xe18 fs/fs-writeback.c:2270 process_one_work+0x7f8/0x13a4 kernel/workqueue.c:2292 worker_thread+0x8c4/0xfec kernel/workqueue.c:2439 kthread+0x250/0x2d8 kernel/kthread.c:376 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:850 irq event stamp: 52046 hardirqs last enabled at (52045): [] folio_memcg_lock+0xe8/0x1f4 mm/memcontrol.c:2113 hardirqs last disabled at (52046): [] __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:108 [inline] hardirqs last disabled at (52046): [] _raw_spin_lock_irqsave+0xa4/0xb0 kernel/locking/spinlock.c:162 softirqs last enabled at (52016): [] softirq_handle_end kernel/softirq.c:439 [inline] softirqs last enabled at (52016): [] handle_softirqs+0xaec/0xc60 kernel/softirq.c:624 softirqs last disabled at (51981): [] __do_softirq+0x14/0x20 kernel/softirq.c:630 ---[ end trace 0000000000000000 ]---