====================================================== WARNING: possible circular locking dependency detected 6.7.0-rc6-syzkaller #0 Not tainted ------------------------------------------------------ syz-executor.0/18511 is trying to acquire lock: ffff88804a628860 (&ni->ni_lock/4){+.+.}-{3:3}, at: ni_lock fs/ntfs3/ntfs_fs.h:1124 [inline] ffff88804a628860 (&ni->ni_lock/4){+.+.}-{3:3}, at: ntfs_fallocate+0x787/0x1070 fs/ntfs3/file.c:548 but task is already holding lock: ffff88804a628ca0 (mapping.invalidate_lock#3){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:847 [inline] ffff88804a628ca0 (mapping.invalidate_lock#3){++++}-{3:3}, at: ntfs_fallocate+0x3ac/0x1070 fs/ntfs3/file.c:484 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #3 (mapping.invalidate_lock#3){++++}-{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+0x646/0x1670 mm/filemap.c:3225 __do_fault+0x133/0x4e0 mm/memory.c:4266 do_read_fault mm/memory.c:4629 [inline] do_fault mm/memory.c:4763 [inline] do_pte_missing mm/memory.c:3731 [inline] handle_pte_fault mm/memory.c:5039 [inline] __handle_mm_fault mm/memory.c:5180 [inline] handle_mm_fault+0x4c9b/0x6680 mm/memory.c:5345 faultin_page mm/gup.c:956 [inline] __get_user_pages+0x6bd/0x15f0 mm/gup.c:1239 populate_vma_page_range+0x2aa/0x370 mm/gup.c:1677 __mm_populate+0x279/0x450 mm/gup.c:1786 mm_populate include/linux/mm.h:3379 [inline] vm_mmap_pgoff+0x304/0x420 mm/util.c:561 ksys_mmap_pgoff+0x4ff/0x6d0 mm/mmap.c:1425 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0x45/0x110 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x63/0x6b -> #2 (&mm->mmap_lock){++++}-{3:3}: lock_acquire+0x1e3/0x530 kernel/locking/lockdep.c:5754 __might_fault+0xc1/0x120 mm/memory.c:5956 _copy_to_user+0x2a/0xa0 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+0xa5e/0x1230 fs/ntfs3/frecord.c:2065 ntfs_fiemap+0x132/0x180 fs/ntfs3/file.c:1164 ioctl_fiemap fs/ioctl.c:220 [inline] do_vfs_ioctl+0x19ea/0x2b40 fs/ioctl.c:811 __do_sys_ioctl fs/ioctl.c:869 [inline] __se_sys_ioctl+0x81/0x170 fs/ioctl.c:857 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0x45/0x110 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x63/0x6b -> #1 (&indx->run_lock){.+.+}-{3:3}: lock_acquire+0x1e3/0x530 kernel/locking/lockdep.c:5754 down_read+0xb1/0xa40 kernel/locking/rwsem.c:1526 indx_read+0x2a5/0xc40 fs/ntfs3/index.c:1066 indx_find+0x46b/0xb60 fs/ntfs3/index.c:1181 dir_search_u+0x1b7/0x3a0 fs/ntfs3/dir.c:254 ntfs_lookup+0x106/0x1f0 fs/ntfs3/namei.c:85 __lookup_slow+0x282/0x3e0 fs/namei.c:1694 lookup_slow+0x53/0x70 fs/namei.c:1711 walk_component+0x2d0/0x400 fs/namei.c:2002 lookup_last fs/namei.c:2459 [inline] path_lookupat+0x16f/0x450 fs/namei.c:2483 filename_lookup+0x255/0x610 fs/namei.c:2512 vfs_statx+0x10b/0x4c0 fs/stat.c:244 vfs_fstatat fs/stat.c:299 [inline] vfs_stat include/linux/fs.h:3111 [inline] __do_sys_newstat fs/stat.c:436 [inline] __se_sys_newstat fs/stat.c:432 [inline] __x64_sys_newstat+0xf8/0x180 fs/stat.c:432 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0x45/0x110 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x63/0x6b -> #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+0x1909/0x5ab0 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:603 [inline] __mutex_lock+0x136/0xd60 kernel/locking/mutex.c:747 ni_lock fs/ntfs3/ntfs_fs.h:1124 [inline] ntfs_fallocate+0x787/0x1070 fs/ntfs3/file.c:548 vfs_fallocate+0x551/0x6b0 fs/open.c:324 ksys_fallocate fs/open.c:347 [inline] __do_sys_fallocate fs/open.c:355 [inline] __se_sys_fallocate fs/open.c:353 [inline] __x64_sys_fallocate+0xbd/0x100 fs/open.c:353 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0x45/0x110 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x63/0x6b other info that might help us debug this: Chain exists of: &ni->ni_lock/4 --> &mm->mmap_lock --> mapping.invalidate_lock#3 Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(mapping.invalidate_lock#3); lock(&mm->mmap_lock); lock(mapping.invalidate_lock#3); lock(&ni->ni_lock/4); *** DEADLOCK *** 3 locks held by syz-executor.0/18511: #0: ffff88804322a418 (sb_writers#14){.+.+}-{0:0}, at: file_start_write include/linux/fs.h:2713 [inline] #0: ffff88804322a418 (sb_writers#14){.+.+}-{0:0}, at: vfs_fallocate+0x4c4/0x6b0 fs/open.c:323 #1: ffff88804a628b00 (&sb->s_type->i_mutex_key#21){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:802 [inline] #1: ffff88804a628b00 (&sb->s_type->i_mutex_key#21){+.+.}-{3:3}, at: ntfs_fallocate+0x2dd/0x1070 fs/ntfs3/file.c:470 #2: ffff88804a628ca0 (mapping.invalidate_lock#3){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:847 [inline] #2: ffff88804a628ca0 (mapping.invalidate_lock#3){++++}-{3:3}, at: ntfs_fallocate+0x3ac/0x1070 fs/ntfs3/file.c:484 stack backtrace: CPU: 1 PID: 18511 Comm: syz-executor.0 Not tainted 6.7.0-rc6-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x1e7/0x2d0 lib/dump_stack.c:106 check_noncircular+0x366/0x490 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+0x1909/0x5ab0 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:603 [inline] __mutex_lock+0x136/0xd60 kernel/locking/mutex.c:747 ni_lock fs/ntfs3/ntfs_fs.h:1124 [inline] ntfs_fallocate+0x787/0x1070 fs/ntfs3/file.c:548 vfs_fallocate+0x551/0x6b0 fs/open.c:324 ksys_fallocate fs/open.c:347 [inline] __do_sys_fallocate fs/open.c:355 [inline] __se_sys_fallocate fs/open.c:353 [inline] __x64_sys_fallocate+0xbd/0x100 fs/open.c:353 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0x45/0x110 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x63/0x6b RIP: 0033:0x7fddbca7cba9 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:00007fddbb5dd0c8 EFLAGS: 00000246 ORIG_RAX: 000000000000011d RAX: ffffffffffffffda RBX: 00007fddbcb9c050 RCX: 00007fddbca7cba9 RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000007 RBP: 00007fddbcac847a R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000001000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000006e R14: 00007fddbcb9c050 R15: 00007fffaa7b4d98