------------[ cut here ]------------ WARNING: CPU: 0 PID: 15508 at fs/nilfs2/btree.c:2348 nilfs_btree_mark+0x1b4/0x1f8 fs/nilfs2/btree.c:2348 Modules linked in: CPU: 0 PID: 15508 Comm: syz.5.3223 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 pstate: 82400005 (Nzcv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) pc : nilfs_btree_mark+0x1b4/0x1f8 fs/nilfs2/btree.c:2348 lr : nilfs_btree_mark+0x1b4/0x1f8 fs/nilfs2/btree.c:2348 sp : ffff800021ac7550 x29: ffff800021ac7570 x28: dfff800000000000 x27: 0000000000000000 x26: ffff800021ce3020 x25: 1fffe0001bf6201e x24: dfff800000000000 x23: ffff800011f54be0 x22: 000000000000006d x21: ffff0000dfb10018 x20: 00000000fffffffe x19: ffff0000ccc31680 x18: ffff800011b9bf60 x17: 1fffe00033ea637e x16: ffff8000082d92bc x15: 0000000040000000 x14: 0000000000000004 x13: 1fffe0001998639f x12: 0000000000080000 x11: 00000000000191b7 x10: ffff8000336ee000 x9 : ffff800009c5de64 x8 : 00000000000191b8 x7 : 0000000000000000 x6 : 000000000000003f x5 : 0000000000000000 x4 : 000000000000006e x3 : ffff800021ac7558 x2 : 00000000ffffffff x1 : 00000000fffffffe x0 : 00000000fffffffe Call trace: nilfs_btree_mark+0x1b4/0x1f8 fs/nilfs2/btree.c:2348 nilfs_bmap_mark+0xb8/0x17c fs/nilfs2/bmap.c:420 nilfs_ioctl_mark_blocks_dirty fs/nilfs2/ioctl.c:779 [inline] nilfs_ioctl_prepare_clean_segments+0x3ac/0x730 fs/nilfs2/ioctl.c:814 nilfs_clean_segments+0x148/0x870 fs/nilfs2/segment.c:2516 nilfs_ioctl_clean_segments fs/nilfs2/ioctl.c:940 [inline] nilfs_ioctl+0x22c0/0x2660 fs/nilfs2/ioctl.c:1304 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:870 [inline] __se_sys_ioctl fs/ioctl.c:856 [inline] __arm64_sys_ioctl+0x14c/0x1c8 fs/ioctl.c:856 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2b4 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140 do_el0_svc+0x58/0x130 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: 12616 hardirqs last enabled at (12615): [] raw_spin_rq_unlock_irq kernel/sched/sched.h:1374 [inline] hardirqs last enabled at (12615): [] finish_lock_switch+0xb0/0x1c4 kernel/sched/core.c:5004 hardirqs last disabled at (12616): [] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:405 softirqs last enabled at (12424): [] local_bh_enable+0x10/0x34 include/linux/bottom_half.h:32 softirqs last disabled at (12422): [] local_bh_disable+0x10/0x34 include/linux/bottom_half.h:19 ---[ end trace 0000000000000000 ]--- ------------[ cut here ]------------ WARNING: CPU: 0 PID: 15508 at fs/nilfs2/ioctl.c:782 nilfs_ioctl_mark_blocks_dirty fs/nilfs2/ioctl.c:782 [inline] WARNING: CPU: 0 PID: 15508 at fs/nilfs2/ioctl.c:782 nilfs_ioctl_prepare_clean_segments+0x6bc/0x730 fs/nilfs2/ioctl.c:814 Modules linked in: CPU: 0 PID: 15508 Comm: syz.5.3223 Tainted: G W syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 pstate: 82400005 (Nzcv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) pc : nilfs_ioctl_mark_blocks_dirty fs/nilfs2/ioctl.c:782 [inline] pc : nilfs_ioctl_prepare_clean_segments+0x6bc/0x730 fs/nilfs2/ioctl.c:814 lr : nilfs_ioctl_mark_blocks_dirty fs/nilfs2/ioctl.c:782 [inline] lr : nilfs_ioctl_prepare_clean_segments+0x6bc/0x730 fs/nilfs2/ioctl.c:814 sp : ffff800021ac7600 x29: ffff800021ac76a0 x28: dfff800000000000 x27: 0000000000000000 x26: ffff800021ce3020 x25: ffff800021ce3018 x24: 00000000fffffffe x23: 1ffff0000439c603 x22: 1ffff0000439c602 x21: ffff800021ce3000 x20: ffff0000da0792c8 x19: 0000000000000001 x18: ffff800011b9bf60 x17: ffff80001835a000 x16: ffff8000082d92bc x15: ffff8000089f00b4 x14: 0000000000000001 x13: 1fffe0001bf6200a x12: 0000000000080000 x11: 0000000000035ac1 x10: ffff8000336ee000 x9 : ffff800009c9c780 x8 : 0000000000035ac2 x7 : ffff80000805983c x6 : ffff800008059a4c x5 : ffff0000e729f970 x4 : ffff800021ac7238 x3 : ffff8000082d27a8 x2 : 0000000000000001 x1 : 00000000fffffffe x0 : 00000000fffffffe Call trace: nilfs_ioctl_mark_blocks_dirty fs/nilfs2/ioctl.c:782 [inline] nilfs_ioctl_prepare_clean_segments+0x6bc/0x730 fs/nilfs2/ioctl.c:814 nilfs_clean_segments+0x148/0x870 fs/nilfs2/segment.c:2516 nilfs_ioctl_clean_segments fs/nilfs2/ioctl.c:940 [inline] nilfs_ioctl+0x22c0/0x2660 fs/nilfs2/ioctl.c:1304 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:870 [inline] __se_sys_ioctl fs/ioctl.c:856 [inline] __arm64_sys_ioctl+0x14c/0x1c8 fs/ioctl.c:856 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2b4 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140 do_el0_svc+0x58/0x130 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: 12728 hardirqs last enabled at (12727): [] kasan_quarantine_put+0xc4/0x200 mm/kasan/quarantine.c:242 hardirqs last disabled at (12728): [] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:405 softirqs last enabled at (12716): [] softirq_handle_end kernel/softirq.c:439 [inline] softirqs last enabled at (12716): [] handle_softirqs+0xaec/0xc60 kernel/softirq.c:624 softirqs last disabled at (12619): [] __do_softirq+0x14/0x20 kernel/softirq.c:630 ---[ end trace 0000000000000000 ]--- NILFS (loop5): error -2 preparing GC: cannot mark copying blocks dirty