------------[ cut here ]------------ WARNING: CPU: 0 PID: 4438 at include/linux/backing-dev.h:247 inode_to_wb include/linux/backing-dev.h:243 [inline] WARNING: CPU: 0 PID: 4438 at include/linux/backing-dev.h:247 folio_account_dirtied mm/page-writeback.c:2587 [inline] WARNING: CPU: 0 PID: 4438 at include/linux/backing-dev.h:247 __folio_mark_dirty+0x8b8/0xce0 mm/page-writeback.c:2638 Modules linked in: CPU: 0 PID: 4438 Comm: syz-executor Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/07/2026 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+0x8b8/0xce0 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+0x8b8/0xce0 mm/page-writeback.c:2638 sp : ffff800020c17700 x29: ffff800020c17710 x28: 1fffff800061dc18 x27: 0000000000000000 x26: dfff800000000000 x25: 0000000000000000 x24: ffff0000c550be98 x23: 0000000000000001 x22: 0000000000000000 x21: 1fffe00018aa17d3 x20: ffff0000eba107e8 x19: fffffc00030ee0c0 x18: 1fffe00033e7037e x17: ffff80001538d000 x16: ffff8000082dbd50 x15: 000000000004ffff x14: 0000000000000001 x13: 1fffe00018aa17d3 x12: 0000000000000000 x11: ff00800008715b58 x10: 0000000000000000 x9 : ffff800008715b58 x8 : ffff0000d622b800 x7 : 0000000000000000 x6 : 0000000000000000 x5 : 0000000000000020 x4 : 0000000000000000 x3 : ffff800008a67cc8 x2 : ffff0000ced10060 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+0x8b8/0xce0 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+0x128/0x918 fs/gfs2/lops.c:111 buf_lo_after_commit+0x144/0x18c fs/gfs2/lops.c:747 lops_after_commit fs/gfs2/lops.h:49 [inline] __gfs2_log_flush+0x12e8/0x1bd4 fs/gfs2/log.c:1118 gfs2_log_flush+0x3c/0x58 fs/gfs2/log.c:1180 gfs2_kill_sb+0x5c/0xd8 fs/gfs2/ops_fstype.c:1729 deactivate_locked_super+0xb4/0x128 fs/super.c:332 deactivate_super+0xe4/0x104 fs/super.c:363 cleanup_mnt+0x3a8/0x430 fs/namespace.c:1191 __cleanup_mnt+0x20/0x30 fs/namespace.c:1198 task_work_run+0x1f4/0x280 kernel/task_work.c:203 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline] do_notify_resume+0x20f8/0x2c84 arch/arm64/kernel/signal.c:1151 prepare_exit_to_user_mode arch/arm64/kernel/entry-common.c:137 [inline] exit_to_user_mode arch/arm64/kernel/entry-common.c:142 [inline] el0_svc+0x98/0x128 arch/arm64/kernel/entry-common.c:638 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585 irq event stamp: 153202 hardirqs last enabled at (153201): [] folio_memcg_lock+0xe8/0x1f8 mm/memcontrol.c:2113 hardirqs last disabled at (153202): [] __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:108 [inline] hardirqs last disabled at (153202): [] _raw_spin_lock_irqsave+0xa4/0xb0 kernel/locking/spinlock.c:162 softirqs last enabled at (153086): [] local_bh_enable+0x10/0x34 include/linux/bottom_half.h:32 softirqs last disabled at (153084): [] local_bh_disable+0x10/0x34 include/linux/bottom_half.h:19 ---[ end trace 0000000000000000 ]--- ------------[ cut here ]------------ WARNING: CPU: 1 PID: 4438 at include/linux/backing-dev.h:247 inode_to_wb include/linux/backing-dev.h:243 [inline] WARNING: CPU: 1 PID: 4438 at include/linux/backing-dev.h:247 __folio_start_writeback+0x8a8/0xa98 mm/page-writeback.c:3003 Modules linked in: CPU: 1 PID: 4438 Comm: syz-executor Tainted: G W syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/07/2026 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+0x8a8/0xa98 mm/page-writeback.c:3003 lr : inode_to_wb include/linux/backing-dev.h:243 [inline] lr : __folio_start_writeback+0x8a8/0xa98 mm/page-writeback.c:3003 sp : ffff800020c17180 x29: ffff800020c17260 x28: ffff700004182e38 x27: 0000000000000000 x26: ffff0000c550bcf0 x25: 1fffff800061dc19 x24: dfff800000000000 x23: ffff0000eba107e8 x22: ffff800020c171e0 x21: ffff0000c550be98 x20: 0000000000000001 x19: fffffc00030ee0c0 x18: 1fffe00033e7457e x17: ffff80001538d000 x16: ffff8000082dbd50 x15: 0000000000000000 x14: 0000000000000001 x13: 1fffff800061dc18 x12: 0000000000000000 x11: ff0080000871807c x10: 0000000000000000 x9 : ffff80000871807c x8 : ffff0000d622b800 x7 : ffff800008717acc x6 : 0000000000000000 x5 : 0000000000000080 x4 : 0000000000000001 x3 : ffff800008717b08 x2 : 0000000000000001 x1 : 0000000000000000 x0 : 0000000000000000 Call trace: inode_to_wb include/linux/backing-dev.h:243 [inline] __folio_start_writeback+0x8a8/0xa98 mm/page-writeback.c:3003 set_page_writeback+0x5c/0x7c mm/folio-compat.c:56 gfs2_aspace_writepage+0x524/0x6f4 fs/gfs2/meta_io.c:73 __gfs2_writepage+0x70/0x184 fs/gfs2/log.c:87 write_cache_pages+0x760/0xe00 mm/page-writeback.c:2382 gfs2_ail1_start_one fs/gfs2/log.c:143 [inline] gfs2_ail1_flush+0x7a8/0x9f0 fs/gfs2/log.c:223 gfs2_ail1_start fs/gfs2/log.c:254 [inline] empty_ail1_list+0x130/0x214 fs/gfs2/log.c:987 __gfs2_log_flush+0x15c8/0x1bd4 fs/gfs2/log.c:1133 gfs2_log_flush+0x3c/0x58 fs/gfs2/log.c:1180 gfs2_kill_sb+0x5c/0xd8 fs/gfs2/ops_fstype.c:1729 deactivate_locked_super+0xb4/0x128 fs/super.c:332 deactivate_super+0xe4/0x104 fs/super.c:363 cleanup_mnt+0x3a8/0x430 fs/namespace.c:1191 __cleanup_mnt+0x20/0x30 fs/namespace.c:1198 task_work_run+0x1f4/0x280 kernel/task_work.c:203 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline] do_notify_resume+0x20f8/0x2c84 arch/arm64/kernel/signal.c:1151 prepare_exit_to_user_mode arch/arm64/kernel/entry-common.c:137 [inline] exit_to_user_mode arch/arm64/kernel/entry-common.c:142 [inline] el0_svc+0x98/0x128 arch/arm64/kernel/entry-common.c:638 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585 irq event stamp: 153640 hardirqs last enabled at (153639): [] folio_memcg_lock+0xe8/0x1f8 mm/memcontrol.c:2113 hardirqs last disabled at (153640): [] __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:108 [inline] hardirqs last disabled at (153640): [] _raw_spin_lock_irqsave+0xa4/0xb0 kernel/locking/spinlock.c:162 softirqs last enabled at (153616): [] softirq_handle_end kernel/softirq.c:439 [inline] softirqs last enabled at (153616): [] handle_softirqs+0xb1c/0xc90 kernel/softirq.c:624 softirqs last disabled at (153205): [] __do_softirq+0x14/0x20 kernel/softirq.c:630 ---[ end trace 0000000000000000 ]---