loop2: detected capacity change from 0 to 4096 ntfs3: loop2: Different NTFS sector size (2048) and media sector size (512). ntfs3: loop2: Mark volume as dirty due to NTFS errors ntfs3: loop2: Failed to initialize $Extend/$ObjId. ====================================================== WARNING: possible circular locking dependency detected 6.8.0-rc4-syzkaller-00014-g7e90b5c295ec #0 Not tainted ------------------------------------------------------ syz-executor.2/9336 is trying to acquire lock: ffff888034c3bc00 (&ni->ni_lock/4){+.+.}-{3:3}, at: ni_lock fs/ntfs3/ntfs_fs.h:1121 [inline] ffff888034c3bc00 (&ni->ni_lock/4){+.+.}-{3:3}, at: ntfs_read_folio+0x193/0x210 fs/ntfs3/inode.c:718 but task is already holding lock: ffff888034c3c040 (mapping.invalidate_lock#10){.+.+}-{3:3}, at: filemap_invalidate_lock_shared include/linux/fs.h:857 [inline] ffff888034c3c040 (mapping.invalidate_lock#10){.+.+}-{3:3}, at: filemap_update_page mm/filemap.c:2374 [inline] ffff888034c3c040 (mapping.invalidate_lock#10){.+.+}-{3:3}, at: filemap_get_pages+0x8b1/0x2090 mm/filemap.c:2522 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #2 (mapping.invalidate_lock#10){.+.+}-{3:3}: lock_acquire+0x1e3/0x530 kernel/locking/lockdep.c:5754 down_read+0xb1/0xa40 kernel/locking/rwsem.c:1526 filemap_invalidate_lock_shared include/linux/fs.h:857 [inline] filemap_fault+0x646/0x1680 mm/filemap.c:3237 __do_fault+0x135/0x460 mm/memory.c:4376 do_read_fault mm/memory.c:4738 [inline] do_fault mm/memory.c:4868 [inline] do_pte_missing mm/memory.c:3745 [inline] handle_pte_fault mm/memory.c:5144 [inline] __handle_mm_fault+0x49e6/0x72d0 mm/memory.c:5285 handle_mm_fault+0x27e/0x770 mm/memory.c:5450 do_user_addr_fault arch/x86/mm/fault.c:1415 [inline] handle_page_fault arch/x86/mm/fault.c:1507 [inline] exc_page_fault+0x2ad/0x870 arch/x86/mm/fault.c:1563 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:570 strncpy_from_user+0x111/0x2f0 lib/strncpy_from_user.c:139 getname_flags+0xf9/0x4f0 fs/namei.c:151 user_path_at_empty+0x2c/0x60 fs/namei.c:2919 user_path_at include/linux/namei.h:57 [inline] __do_sys_chdir fs/open.c:556 [inline] __se_sys_chdir+0xbf/0x220 fs/open.c:550 do_syscall_64+0xf9/0x240 entry_SYSCALL_64_after_hwframe+0x6f/0x77 -> #1 (&mm->mmap_lock){++++}-{3:3}: lock_acquire+0x1e3/0x530 kernel/locking/lockdep.c:5754 __might_fault+0xc5/0x120 mm/memory.c:6060 _copy_to_user+0x2a/0xb0 lib/usercopy.c:36 copy_to_user include/linux/uaccess.h:191 [inline] fiemap_fill_next_extent+0x235/0x410 fs/ioctl.c:145 ni_fiemap+0x100b/0x1230 fs/ntfs3/frecord.c:1948 ntfs_fiemap+0x132/0x180 fs/ntfs3/file.c:1206 ioctl_fiemap fs/ioctl.c:220 [inline] do_vfs_ioctl+0x1a02/0x2b60 fs/ioctl.c:811 __do_sys_ioctl fs/ioctl.c:869 [inline] __se_sys_ioctl+0x81/0x170 fs/ioctl.c:857 do_syscall_64+0xf9/0x240 entry_SYSCALL_64_after_hwframe+0x6f/0x77 -> #0 (&ni->ni_lock/4){+.+.}-{3:3}: check_prev_add kernel/locking/lockdep.c:3134 [inline] check_prevs_add kernel/locking/lockdep.c:3253 [inline] validate_chain+0x18ca/0x58e0 kernel/locking/lockdep.c:3869 __lock_acquire+0x1345/0x1fd0 kernel/locking/lockdep.c:5137 lock_acquire+0x1e3/0x530 kernel/locking/lockdep.c:5754 __mutex_lock_common kernel/locking/mutex.c:608 [inline] __mutex_lock+0x136/0xd70 kernel/locking/mutex.c:752 ni_lock fs/ntfs3/ntfs_fs.h:1121 [inline] ntfs_read_folio+0x193/0x210 fs/ntfs3/inode.c:718 filemap_read_folio+0x1a0/0x790 mm/filemap.c:2324 filemap_update_page mm/filemap.c:2408 [inline] filemap_get_pages+0x15a8/0x2090 mm/filemap.c:2522 filemap_read+0x41b/0xec0 mm/filemap.c:2594 do_iter_readv_writev+0x46c/0x640 vfs_readv+0x2ae/0xa50 fs/read_write.c:932 do_preadv fs/read_write.c:1049 [inline] __do_sys_preadv fs/read_write.c:1099 [inline] __se_sys_preadv fs/read_write.c:1094 [inline] __x64_sys_preadv+0x1c7/0x2c0 fs/read_write.c:1094 do_syscall_64+0xf9/0x240 entry_SYSCALL_64_after_hwframe+0x6f/0x77 other info that might help us debug this: Chain exists of: &ni->ni_lock/4 --> &mm->mmap_lock --> mapping.invalidate_lock#10 Possible unsafe locking scenario: CPU0 CPU1 ---- ---- rlock(mapping.invalidate_lock#10); lock(&mm->mmap_lock); lock(mapping.invalidate_lock#10); lock(&ni->ni_lock/4); *** DEADLOCK *** 1 lock held by syz-executor.2/9336: #0: ffff888034c3c040 (mapping.invalidate_lock#10){.+.+}-{3:3}, at: filemap_invalidate_lock_shared include/linux/fs.h:857 [inline] #0: ffff888034c3c040 (mapping.invalidate_lock#10){.+.+}-{3:3}, at: filemap_update_page mm/filemap.c:2374 [inline] #0: ffff888034c3c040 (mapping.invalidate_lock#10){.+.+}-{3:3}, at: filemap_get_pages+0x8b1/0x2090 mm/filemap.c:2522 stack backtrace: CPU: 1 PID: 9336 Comm: syz-executor.2 Not tainted 6.8.0-rc4-syzkaller-00014-g7e90b5c295ec #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x1e7/0x2e0 lib/dump_stack.c:106 check_noncircular+0x36a/0x4a0 kernel/locking/lockdep.c:2187 check_prev_add kernel/locking/lockdep.c:3134 [inline] check_prevs_add kernel/locking/lockdep.c:3253 [inline] validate_chain+0x18ca/0x58e0 kernel/locking/lockdep.c:3869 __lock_acquire+0x1345/0x1fd0 kernel/locking/lockdep.c:5137 lock_acquire+0x1e3/0x530 kernel/locking/lockdep.c:5754 __mutex_lock_common kernel/locking/mutex.c:608 [inline] __mutex_lock+0x136/0xd70 kernel/locking/mutex.c:752 ni_lock fs/ntfs3/ntfs_fs.h:1121 [inline] ntfs_read_folio+0x193/0x210 fs/ntfs3/inode.c:718 filemap_read_folio+0x1a0/0x790 mm/filemap.c:2324 filemap_update_page mm/filemap.c:2408 [inline] filemap_get_pages+0x15a8/0x2090 mm/filemap.c:2522 filemap_read+0x41b/0xec0 mm/filemap.c:2594 do_iter_readv_writev+0x46c/0x640 vfs_readv+0x2ae/0xa50 fs/read_write.c:932 do_preadv fs/read_write.c:1049 [inline] __do_sys_preadv fs/read_write.c:1099 [inline] __se_sys_preadv fs/read_write.c:1094 [inline] __x64_sys_preadv+0x1c7/0x2c0 fs/read_write.c:1094 do_syscall_64+0xf9/0x240 entry_SYSCALL_64_after_hwframe+0x6f/0x77 RIP: 0033:0x7fde4247dda9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 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 b0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fde432920c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000127 RAX: ffffffffffffffda RBX: 00007fde425abf80 RCX: 00007fde4247dda9 RDX: 0000000000000001 RSI: 00000000200016c0 RDI: 0000000000000004 RBP: 00007fde424ca47a R08: 0000000000000000 R09: 0000000000000000 R10: 000000000000d194 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007fde425abf80 R15: 00007ffc4fd3f298