------------[ cut here ]------------ WARNING: CPU: 0 PID: 6405 at fs/ext4/inode.c:3659 ext4_dirty_folio+0x12c/0x170 fs/ext4/inode.c:3659 Modules linked in: CPU: 0 PID: 6405 Comm: syz.6.675 Not tainted 6.1.141-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : ext4_dirty_folio+0x12c/0x170 fs/ext4/inode.c:3659 lr : ext4_dirty_folio+0x12c/0x170 fs/ext4/inode.c:3659 sp : ffff8000210477c0 x29: ffff8000210477c0 x28: ffff0000f40c1668 x27: ffff0000f3137200 x26: ffff700004208f2c x25: 05ffc00000300811 x24: 1fffff80007d1ab0 x23: 1fffff80007d1ab1 x22: dfff800000000000 x21: fffffc0003e8d5a8 x20: ffff0000e3f4acf8 x19: fffffc0003e8d580 x18: ffff800011a7bce0 x17: 1fffe00033ee2f76 x16: ffff8000082d1c00 x15: ffff80001506d000 x14: 0000000000000100 x13: 1ffff00002a0e0b1 x12: 0000000000080000 x11: 00000000000040ad x10: ffff80002b394000 x9 : ffff800008d75788 x8 : 00000000000040ae x7 : ffff8000082516dc x6 : 0000000000000000 x5 : 0000000000000080 x4 : 0000000000000001 x3 : ffff8000082aa02c x2 : 0000000000000000 x1 : 0000000000000001 x0 : 0000000000000000 Call trace: ext4_dirty_folio+0x12c/0x170 fs/ext4/inode.c:3659 folio_mark_dirty+0x118/0x198 mm/page-writeback.c:2771 set_page_dirty+0x58/0x78 mm/folio-compat.c:62 set_page_dirty_lock+0x10c/0x174 mm/page-writeback.c:2793 fuse_copy_finish+0x148/0x378 fs/fuse/dev.c:678 fuse_dev_do_read+0xaac/0xf4c fs/fuse/dev.c:1301 fuse_dev_read+0xdc/0x140 fs/fuse/dev.c:1366 call_read_iter include/linux/fs.h:2259 [inline] new_sync_read fs/read_write.c:389 [inline] vfs_read+0x5ac/0x7c4 fs/read_write.c:470 ksys_read+0x120/0x210 fs/read_write.c:613 __do_sys_read fs/read_write.c:623 [inline] __se_sys_read fs/read_write.c:621 [inline] __arm64_sys_read+0x7c/0x90 fs/read_write.c:621 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2bc arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140 do_el0_svc+0x58/0x13c arch/arm64/kernel/syscall.c:204 el0_svc+0x58/0x138 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: 124 hardirqs last enabled at (123): [] raw_spin_rq_unlock_irq kernel/sched/sched.h:1367 [inline] hardirqs last enabled at (123): [] finish_lock_switch+0xb0/0x1c4 kernel/sched/core.c:5003 hardirqs last disabled at (124): [] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:405 softirqs last enabled at (66): [] local_bh_enable+0x10/0x34 include/linux/bottom_half.h:32 softirqs last disabled at (64): [] local_bh_disable+0x10/0x34 include/linux/bottom_half.h:19 ---[ end trace 0000000000000000 ]--- ------------[ cut here ]------------ WARNING: CPU: 0 PID: 6405 at mm/page-writeback.c:2637 __folio_mark_dirty+0xd0/0xce0 mm/page-writeback.c:2637 Modules linked in: CPU: 0 PID: 6405 Comm: syz.6.675 Tainted: G W 6.1.141-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 pstate: 804000c5 (Nzcv daIF +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : __folio_mark_dirty+0xd0/0xce0 mm/page-writeback.c:2637 lr : __folio_mark_dirty+0xd0/0xce0 mm/page-writeback.c:2637 sp : ffff8000210476f0 x29: ffff800021047710 x28: 1fffff80007d1ab0 x27: dfff800000000000 x26: ffff700004208f2c x25: 0000000000000000 x24: 1fffff80007d1ab0 x23: fffffc0003e8d598 x22: fffffc0003e8d588 x21: 05ffc00000300819 x20: ffff0000e3f4acf8 x19: fffffc0003e8d580 x18: ffff800011a7bce0 x17: ffff8000181a1000 x16: ffff8000082e6f68 x15: ffff800017c81fc0 x14: ffff0000d17dddd8 x13: 1ffff00002a0e0b1 x12: 0000000000080000 x11: 000000000001e5b4 x10: ffff80002b394000 x9 : ffff8000086fa154 x8 : 000000000001e5b5 x7 : ffff8000086fa0c8 x6 : 0000000000000000 x5 : 0000000000000080 x4 : 0000000000000001 x3 : ffff8000082e7088 x2 : 0000000000000001 x1 : 0000000000000000 x0 : 0000000000000000 Call trace: __folio_mark_dirty+0xd0/0xce0 mm/page-writeback.c:2637 block_dirty_folio+0x180/0x218 fs/buffer.c:640 ext4_dirty_folio+0x108/0x170 fs/ext4/inode.c:3660 folio_mark_dirty+0x118/0x198 mm/page-writeback.c:2771 set_page_dirty+0x58/0x78 mm/folio-compat.c:62 set_page_dirty_lock+0x10c/0x174 mm/page-writeback.c:2793 fuse_copy_finish+0x148/0x378 fs/fuse/dev.c:678 fuse_dev_do_read+0xaac/0xf4c fs/fuse/dev.c:1301 fuse_dev_read+0xdc/0x140 fs/fuse/dev.c:1366 call_read_iter include/linux/fs.h:2259 [inline] new_sync_read fs/read_write.c:389 [inline] vfs_read+0x5ac/0x7c4 fs/read_write.c:470 ksys_read+0x120/0x210 fs/read_write.c:613 __do_sys_read fs/read_write.c:623 [inline] __se_sys_read fs/read_write.c:621 [inline] __arm64_sys_read+0x7c/0x90 fs/read_write.c:621 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2bc arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140 do_el0_svc+0x58/0x13c arch/arm64/kernel/syscall.c:204 el0_svc+0x58/0x138 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: 396 hardirqs last enabled at (395): [] folio_memcg_lock+0xe8/0x1fc mm/memcontrol.c:2113 hardirqs last disabled at (396): [] __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:108 [inline] hardirqs last disabled at (396): [] _raw_spin_lock_irqsave+0xa4/0xb4 kernel/locking/spinlock.c:162 softirqs last enabled at (388): [] softirq_handle_end kernel/softirq.c:439 [inline] softirqs last enabled at (388): [] handle_softirqs+0xaf8/0xc6c kernel/softirq.c:624 softirqs last disabled at (127): [] __do_softirq+0x14/0x20 kernel/softirq.c:630 ---[ end trace 0000000000000000 ]---