------------[ cut here ]------------ WARNING: CPU: 0 PID: 4542 at include/linux/backing-dev.h:247 inode_to_wb include/linux/backing-dev.h:243 [inline] WARNING: CPU: 0 PID: 4542 at include/linux/backing-dev.h:247 folio_account_dirtied mm/page-writeback.c:2587 [inline] WARNING: CPU: 0 PID: 4542 at include/linux/backing-dev.h:247 __folio_mark_dirty+0x8b8/0xce0 mm/page-writeback.c:2638 Modules linked in: CPU: 0 PID: 4542 Comm: syz.1.26 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 : ffff800021707280 x29: ffff800021707290 x28: 1fffff80006e76e8 x27: 0000000000000000 x26: dfff800000000000 x25: 0000000000000000 x24: ffff0000c5184998 x23: 0000000000000001 x22: 0000000000000000 x21: 1fffe00018a30933 x20: ffff0000f3b5cd30 x19: fffffc000373b740 x18: 1fffe00033e7277e x17: ffff80001537d000 x16: ffff8000082dbd3c x15: 000000000004ffff x14: 0000000000000001 x13: 1fffe00018a30933 x12: 0000000000080000 x11: 000000000000cde3 x10: ffff800022dfb000 x9 : ffff800008715320 x8 : 000000000000cde4 x7 : 0000000000000000 x6 : 0000000000000000 x5 : 0000000000000020 x4 : 0000000000000000 x3 : ffff800008a66f8c x2 : ffff0000cea2a060 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_write_inode+0x184/0x33c fs/gfs2/super.c:457 write_inode fs/fs-writeback.c:1521 [inline] __writeback_single_inode+0x5e0/0x157c fs/fs-writeback.c:1738 writeback_single_inode+0x1cc/0x73c fs/fs-writeback.c:1794 sync_inode_metadata+0xc8/0x124 fs/fs-writeback.c:2857 gfs2_fsync+0x170/0x2e0 fs/gfs2/file.c:758 vfs_fsync_range+0x168/0x188 fs/sync.c:188 generic_write_sync include/linux/fs.h:2962 [inline] gfs2_file_write_iter+0xaac/0xc2c fs/gfs2/file.c:1160 call_write_iter include/linux/fs.h:2265 [inline] new_sync_write fs/read_write.c:491 [inline] vfs_write+0x3c8/0x7c8 fs/read_write.c:584 ksys_write+0x12c/0x228 fs/read_write.c:637 __do_sys_write fs/read_write.c:649 [inline] __se_sys_write fs/read_write.c:646 [inline] __arm64_sys_write+0x7c/0x90 fs/read_write.c:646 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x290 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x13c/0x258 arch/arm64/kernel/syscall.c:140 do_el0_svc+0x5c/0x134 arch/arm64/kernel/syscall.c:204 el0_svc+0x58/0x128 arch/arm64/kernel/entry-common.c:637 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: 251520 hardirqs last enabled at (251519): [] folio_memcg_lock+0xe8/0x1f8 mm/memcontrol.c:2113 hardirqs last disabled at (251520): [] __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:108 [inline] hardirqs last disabled at (251520): [] _raw_spin_lock_irqsave+0xa4/0xb0 kernel/locking/spinlock.c:162 softirqs last enabled at (251318): [] local_bh_enable+0x10/0x34 include/linux/bottom_half.h:32 softirqs last disabled at (251316): [] local_bh_disable+0x10/0x34 include/linux/bottom_half.h:19 ---[ end trace 0000000000000000 ]--- ------------[ cut here ]------------ WARNING: CPU: 0 PID: 4542 at include/linux/backing-dev.h:247 inode_to_wb include/linux/backing-dev.h:243 [inline] WARNING: CPU: 0 PID: 4542 at include/linux/backing-dev.h:247 __folio_start_writeback+0x8a8/0xa98 mm/page-writeback.c:3003 Modules linked in: CPU: 0 PID: 4542 Comm: syz.1.26 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 : ffff800021706e60 x29: ffff800021706f40 x28: ffff7000042e0dd4 x27: 0000000000000000 x26: ffff0000c51847f0 x25: 1fffff80007a2bb1 x24: dfff800000000000 x23: ffff0000d27a2ce0 x22: ffff800021706ec0 x21: ffff0000c5184998 x20: 0000000000000001 x19: fffffc0003d15d80 x18: 1fffe00033e7277e x17: ffff80001537d000 x16: ffff8000082dbd3c x15: 000000000004ffff x14: 0000000000000001 x13: 1fffff80007a2bb0 x12: 0000000000080000 x11: 0000000000031273 x10: ffff800022dfb000 x9 : ffff800008717844 x8 : 0000000000031274 x7 : 0000000000000000 x6 : 0000000000000000 x5 : 0000000000000020 x4 : 0000000000000000 x3 : ffff8000087172d0 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 __writepage+0x70/0x184 mm/page-writeback.c:2447 write_cache_pages+0x760/0xe00 mm/page-writeback.c:2382 generic_writepages mm/page-writeback.c:2473 [inline] do_writepages+0x32c/0x50c 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+0x234/0x33c fs/gfs2/super.c:463 write_inode fs/fs-writeback.c:1521 [inline] __writeback_single_inode+0x5e0/0x157c fs/fs-writeback.c:1738 writeback_single_inode+0x1cc/0x73c fs/fs-writeback.c:1794 sync_inode_metadata+0xc8/0x124 fs/fs-writeback.c:2857 gfs2_fsync+0x170/0x2e0 fs/gfs2/file.c:758 vfs_fsync_range+0x168/0x188 fs/sync.c:188 generic_write_sync include/linux/fs.h:2962 [inline] gfs2_file_write_iter+0xaac/0xc2c fs/gfs2/file.c:1160 call_write_iter include/linux/fs.h:2265 [inline] new_sync_write fs/read_write.c:491 [inline] vfs_write+0x3c8/0x7c8 fs/read_write.c:584 ksys_write+0x12c/0x228 fs/read_write.c:637 __do_sys_write fs/read_write.c:649 [inline] __se_sys_write fs/read_write.c:646 [inline] __arm64_sys_write+0x7c/0x90 fs/read_write.c:646 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x290 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x13c/0x258 arch/arm64/kernel/syscall.c:140 do_el0_svc+0x5c/0x134 arch/arm64/kernel/syscall.c:204 el0_svc+0x58/0x128 arch/arm64/kernel/entry-common.c:637 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: 251986 hardirqs last enabled at (251985): [] folio_memcg_lock+0xe8/0x1f8 mm/memcontrol.c:2113 hardirqs last disabled at (251986): [] __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:108 [inline] hardirqs last disabled at (251986): [] _raw_spin_lock_irqsave+0xa4/0xb0 kernel/locking/spinlock.c:162 softirqs last enabled at (251962): [] softirq_handle_end kernel/softirq.c:439 [inline] softirqs last enabled at (251962): [] handle_softirqs+0xb1c/0xc90 kernel/softirq.c:624 softirqs last disabled at (251523): [] __do_softirq+0x14/0x20 kernel/softirq.c:630 ---[ end trace 0000000000000000 ]---