====================================================== WARNING: possible circular locking dependency detected 6.2.0-rc8-syzkaller-00134-g38f8ccde04a3 #0 Not tainted ------------------------------------------------------ syz-executor.3/14929 is trying to acquire lock: ffff88805c16f700 (&ni->ni_lock/4){+.+.}-{3:3}, at: ni_lock fs/ntfs3/ntfs_fs.h:1122 [inline] ffff88805c16f700 (&ni->ni_lock/4){+.+.}-{3:3}, at: ntfs_fallocate+0x51e/0x1190 fs/ntfs3/file.c:503 but task is already holding lock: ffff88805c16fb40 (mapping.invalidate_lock#14){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:801 [inline] ffff88805c16fb40 (mapping.invalidate_lock#14){++++}-{3:3}, at: ntfs_fallocate+0x3c8/0x1190 fs/ntfs3/file.c:488 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #3 (mapping.invalidate_lock#14){++++}-{3:3}: lock_acquire+0x235/0x630 kernel/locking/lockdep.c:5668 down_read+0x3d/0x50 kernel/locking/rwsem.c:1509 filemap_invalidate_lock_shared include/linux/fs.h:811 [inline] filemap_fault+0x644/0x1800 mm/filemap.c:3147 __do_fault+0x136/0x500 mm/memory.c:4166 do_read_fault mm/memory.c:4517 [inline] do_fault mm/memory.c:4646 [inline] handle_pte_fault mm/memory.c:4934 [inline] __handle_mm_fault mm/memory.c:5076 [inline] handle_mm_fault+0x3326/0x51e0 mm/memory.c:5222 do_user_addr_fault arch/x86/mm/fault.c:1428 [inline] handle_page_fault arch/x86/mm/fault.c:1519 [inline] exc_page_fault+0x673/0x880 arch/x86/mm/fault.c:1575 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:570 strncpy_from_user+0x15d/0x370 lib/strncpy_from_user.c:139 getname_flags+0xf9/0x4e0 fs/namei.c:150 do_sys_openat2+0xd6/0x500 fs/open.c:1304 do_sys_open fs/open.c:1326 [inline] __do_sys_openat fs/open.c:1342 [inline] __se_sys_openat fs/open.c:1337 [inline] __x64_sys_openat+0x247/0x290 fs/open.c:1337 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd -> #2 (&mm->mmap_lock){++++}-{3:3}: lock_acquire+0x235/0x630 kernel/locking/lockdep.c:5668 __might_fault+0xba/0x120 mm/memory.c:5650 _copy_to_user+0x2a/0x130 lib/usercopy.c:29 copy_to_user include/linux/uaccess.h:169 [inline] fiemap_fill_next_extent+0x235/0x410 fs/ioctl.c:144 ni_fiemap+0x9b2/0x1230 fs/ntfs3/frecord.c:2040 ntfs_fiemap+0x132/0x180 fs/ntfs3/file.c:1150 ioctl_fiemap fs/ioctl.c:219 [inline] do_vfs_ioctl+0x199b/0x2af0 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:50 [inline] do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd -> #1 (&ni->file.run_lock#3){++++}-{3:3}: lock_acquire+0x235/0x630 kernel/locking/lockdep.c:5668 down_write+0x3a/0x60 kernel/locking/rwsem.c:1562 ntfs_set_size+0x13d/0x1f0 fs/ntfs3/inode.c:821 ntfs_extend+0x153/0x490 fs/ntfs3/file.c:337 ntfs_file_write_iter+0x308/0x6d0 fs/ntfs3/file.c:1064 call_write_iter include/linux/fs.h:2189 [inline] new_sync_write fs/read_write.c:491 [inline] vfs_write+0x7b2/0xbb0 fs/read_write.c:584 ksys_write+0x1a0/0x2c0 fs/read_write.c:637 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd -> #0 (&ni->ni_lock/4){+.+.}-{3:3}: check_prev_add kernel/locking/lockdep.c:3097 [inline] check_prevs_add kernel/locking/lockdep.c:3216 [inline] validate_chain+0x166b/0x58e0 kernel/locking/lockdep.c:3831 __lock_acquire+0x125b/0x1f80 kernel/locking/lockdep.c:5055 lock_acquire+0x235/0x630 kernel/locking/lockdep.c:5668 __mutex_lock_common+0x1d8/0x2530 kernel/locking/mutex.c:603 __mutex_lock kernel/locking/mutex.c:747 [inline] mutex_lock_nested+0x1b/0x20 kernel/locking/mutex.c:799 ni_lock fs/ntfs3/ntfs_fs.h:1122 [inline] ntfs_fallocate+0x51e/0x1190 fs/ntfs3/file.c:503 vfs_fallocate+0x54b/0x6b0 fs/open.c:323 ksys_fallocate fs/open.c:346 [inline] __do_sys_fallocate fs/open.c:354 [inline] __se_sys_fallocate fs/open.c:352 [inline] __x64_sys_fallocate+0xbd/0x100 fs/open.c:352 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd other info that might help us debug this: Chain exists of: &ni->ni_lock/4 --> &mm->mmap_lock --> mapping.invalidate_lock#14 Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(mapping.invalidate_lock#14); lock(&mm->mmap_lock); lock(mapping.invalidate_lock#14); lock(&ni->ni_lock/4); *** DEADLOCK *** 3 locks held by syz-executor.3/14929: #0: ffff88807ef0e460 (sb_writers#15){.+.+}-{0:0}, at: file_start_write include/linux/fs.h:2938 [inline] #0: ffff88807ef0e460 (sb_writers#15){.+.+}-{0:0}, at: vfs_fallocate+0x4be/0x6b0 fs/open.c:322 #1: ffff88805c16f9a0 (&sb->s_type->i_mutex_key#22){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:756 [inline] #1: ffff88805c16f9a0 (&sb->s_type->i_mutex_key#22){+.+.}-{3:3}, at: ntfs_fallocate+0x2fb/0x1190 fs/ntfs3/file.c:474 #2: ffff88805c16fb40 (mapping.invalidate_lock#14){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:801 [inline] #2: ffff88805c16fb40 (mapping.invalidate_lock#14){++++}-{3:3}, at: ntfs_fallocate+0x3c8/0x1190 fs/ntfs3/file.c:488 stack backtrace: CPU: 0 PID: 14929 Comm: syz-executor.3 Not tainted 6.2.0-rc8-syzkaller-00134-g38f8ccde04a3 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/21/2023 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x1e7/0x2d0 lib/dump_stack.c:106 check_noncircular+0x2fe/0x3b0 kernel/locking/lockdep.c:2177 check_prev_add kernel/locking/lockdep.c:3097 [inline] check_prevs_add kernel/locking/lockdep.c:3216 [inline] validate_chain+0x166b/0x58e0 kernel/locking/lockdep.c:3831 __lock_acquire+0x125b/0x1f80 kernel/locking/lockdep.c:5055 lock_acquire+0x235/0x630 kernel/locking/lockdep.c:5668 __mutex_lock_common+0x1d8/0x2530 kernel/locking/mutex.c:603 __mutex_lock kernel/locking/mutex.c:747 [inline] mutex_lock_nested+0x1b/0x20 kernel/locking/mutex.c:799 ni_lock fs/ntfs3/ntfs_fs.h:1122 [inline] ntfs_fallocate+0x51e/0x1190 fs/ntfs3/file.c:503 vfs_fallocate+0x54b/0x6b0 fs/open.c:323 ksys_fallocate fs/open.c:346 [inline] __do_sys_fallocate fs/open.c:354 [inline] __se_sys_fallocate fs/open.c:352 [inline] __x64_sys_fallocate+0xbd/0x100 fs/open.c:352 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7fc0bb28c0f9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 19 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 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fc0b1dfe168 EFLAGS: 00000246 ORIG_RAX: 000000000000011d RAX: ffffffffffffffda RBX: 00007fc0bb3ac050 RCX: 00007fc0bb28c0f9 RDX: 0000000000000000 RSI: 0000000100000003 RDI: 0000000000000004 RBP: 00007fc0bb2e7ae9 R08: 0000000000000000 R09: 0000000000000000 R10: 000000000080fd10 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffdcaf5ad0f R14: 00007fc0b1dfe300 R15: 0000000000022000