loop0: detected capacity change from 0 to 4096 ntfs3: loop0: Different NTFS' sector size (2048) and media sector size (512) ====================================================== WARNING: possible circular locking dependency detected 6.1.97-syzkaller #0 Not tainted ------------------------------------------------------ syz.0.2560/11215 is trying to acquire lock: ffff88807088da30 (&ni->file.run_lock#3){++++}-{3:3}, at: attr_data_get_block+0x276/0x2520 fs/ntfs3/attrib.c:903 but task is already holding lock: ffff88807cceae58 (&mm->mmap_lock){++++}-{3:3}, at: mmap_write_lock include/linux/mmap_lock.h:71 [inline] ffff88807cceae58 (&mm->mmap_lock){++++}-{3:3}, at: do_mbind mm/mempolicy.c:1302 [inline] ffff88807cceae58 (&mm->mmap_lock){++++}-{3:3}, at: kernel_mbind mm/mempolicy.c:1481 [inline] ffff88807cceae58 (&mm->mmap_lock){++++}-{3:3}, at: __do_sys_mbind mm/mempolicy.c:1558 [inline] ffff88807cceae58 (&mm->mmap_lock){++++}-{3:3}, at: __se_sys_mbind+0x4df/0xb10 mm/mempolicy.c:1554 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #1 (&mm->mmap_lock){++++}-{3:3}: lock_acquire+0x1f8/0x5a0 kernel/locking/lockdep.c:5662 __might_fault+0xbd/0x110 mm/memory.c:5835 _copy_to_user+0x26/0x130 lib/usercopy.c:36 copy_to_user include/linux/uaccess.h:169 [inline] fiemap_fill_next_extent+0x231/0x410 fs/ioctl.c:144 ni_fiemap+0xa5a/0x1230 fs/ntfs3/frecord.c:2066 ntfs_fiemap+0x12e/0x170 fs/ntfs3/file.c:1247 ioctl_fiemap fs/ioctl.c:219 [inline] do_vfs_ioctl+0x18e9/0x2a90 fs/ioctl.c:810 __do_sys_ioctl fs/ioctl.c:868 [inline] __se_sys_ioctl+0x81/0x160 fs/ioctl.c:856 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 -> #0 (&ni->file.run_lock#3){++++}-{3:3}: check_prev_add kernel/locking/lockdep.c:3090 [inline] check_prevs_add kernel/locking/lockdep.c:3209 [inline] validate_chain+0x1661/0x5950 kernel/locking/lockdep.c:3825 __lock_acquire+0x125b/0x1f80 kernel/locking/lockdep.c:5049 lock_acquire+0x1f8/0x5a0 kernel/locking/lockdep.c:5662 down_read+0xad/0xa30 kernel/locking/rwsem.c:1520 attr_data_get_block+0x276/0x2520 fs/ntfs3/attrib.c:903 ntfs_get_block_vbo+0x373/0xe60 fs/ntfs3/inode.c:591 __block_write_full_page+0x33a/0x1680 fs/buffer.c:1745 writeout mm/migrate.c:890 [inline] fallback_migrate_folio mm/migrate.c:914 [inline] move_to_new_folio+0x704/0x1310 mm/migrate.c:963 __unmap_and_move mm/migrate.c:1124 [inline] unmap_and_move mm/migrate.c:1196 [inline] migrate_pages+0x1ef6/0x4310 mm/migrate.c:1473 do_mbind mm/mempolicy.c:1334 [inline] kernel_mbind mm/mempolicy.c:1481 [inline] __do_sys_mbind mm/mempolicy.c:1558 [inline] __se_sys_mbind+0x895/0xb10 mm/mempolicy.c:1554 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 other info that might help us debug this: Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(&mm->mmap_lock); lock(&ni->file.run_lock#3); lock(&mm->mmap_lock); lock(&ni->file.run_lock#3); *** DEADLOCK *** 1 lock held by syz.0.2560/11215: #0: ffff88807cceae58 (&mm->mmap_lock){++++}-{3:3}, at: mmap_write_lock include/linux/mmap_lock.h:71 [inline] #0: ffff88807cceae58 (&mm->mmap_lock){++++}-{3:3}, at: do_mbind mm/mempolicy.c:1302 [inline] #0: ffff88807cceae58 (&mm->mmap_lock){++++}-{3:3}, at: kernel_mbind mm/mempolicy.c:1481 [inline] #0: ffff88807cceae58 (&mm->mmap_lock){++++}-{3:3}, at: __do_sys_mbind mm/mempolicy.c:1558 [inline] #0: ffff88807cceae58 (&mm->mmap_lock){++++}-{3:3}, at: __se_sys_mbind+0x4df/0xb10 mm/mempolicy.c:1554 stack backtrace: CPU: 1 PID: 11215 Comm: syz.0.2560 Not tainted 6.1.97-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x1e3/0x2cb lib/dump_stack.c:106 check_noncircular+0x2fa/0x3b0 kernel/locking/lockdep.c:2170 check_prev_add kernel/locking/lockdep.c:3090 [inline] check_prevs_add kernel/locking/lockdep.c:3209 [inline] validate_chain+0x1661/0x5950 kernel/locking/lockdep.c:3825 __lock_acquire+0x125b/0x1f80 kernel/locking/lockdep.c:5049 lock_acquire+0x1f8/0x5a0 kernel/locking/lockdep.c:5662 down_read+0xad/0xa30 kernel/locking/rwsem.c:1520 attr_data_get_block+0x276/0x2520 fs/ntfs3/attrib.c:903 ntfs_get_block_vbo+0x373/0xe60 fs/ntfs3/inode.c:591 __block_write_full_page+0x33a/0x1680 fs/buffer.c:1745 writeout mm/migrate.c:890 [inline] fallback_migrate_folio mm/migrate.c:914 [inline] move_to_new_folio+0x704/0x1310 mm/migrate.c:963 __unmap_and_move mm/migrate.c:1124 [inline] unmap_and_move mm/migrate.c:1196 [inline] migrate_pages+0x1ef6/0x4310 mm/migrate.c:1473 do_mbind mm/mempolicy.c:1334 [inline] kernel_mbind mm/mempolicy.c:1481 [inline] __do_sys_mbind mm/mempolicy.c:1558 [inline] __se_sys_mbind+0x895/0xb10 mm/mempolicy.c:1554 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7ffaccd75bd9 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffaccbff048 EFLAGS: 00000246 ORIG_RAX: 00000000000000ed RAX: ffffffffffffffda RBX: 00007ffaccf03f60 RCX: 00007ffaccd75bd9 RDX: 0000000000000000 RSI: 0000000000800000 RDI: 0000000020001000 RBP: 00007ffaccde4aa1 R08: 0000000000000000 R09: 0000000000000002 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007ffaccf03f60 R15: 00007ffd10fc25c8