loop3: detected capacity change from 0 to 4096 ====================================================== WARNING: possible circular locking dependency detected 6.6.0-syzkaller-15156-g13d88ac54ddd #0 Not tainted ------------------------------------------------------ syz-executor.3/18156 is trying to acquire lock: ffff88803545f700 (&ni->ni_lock/4){+.+.}-{3:3}, at: ni_lock fs/ntfs3/ntfs_fs.h:1124 [inline] ffff88803545f700 (&ni->ni_lock/4){+.+.}-{3:3}, at: ntfs_fallocate+0x8c2/0x1070 fs/ntfs3/file.c:564 but task is already holding lock: ffff88803545fb40 (mapping.invalidate_lock#13){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:847 [inline] ffff88803545fb40 (mapping.invalidate_lock#13){++++}-{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: -> #2 (mapping.invalidate_lock#13){++++}-{3:3}: 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:4265 do_read_fault mm/memory.c:4628 [inline] do_fault mm/memory.c:4762 [inline] do_pte_missing mm/memory.c:3730 [inline] handle_pte_fault mm/memory.c:5038 [inline] __handle_mm_fault mm/memory.c:5179 [inline] handle_mm_fault+0x4d08/0x6650 mm/memory.c:5344 do_user_addr_fault arch/x86/mm/fault.c:1413 [inline] handle_page_fault arch/x86/mm/fault.c:1505 [inline] exc_page_fault+0x2ac/0x860 arch/x86/mm/fault.c:1561 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:570 fault_in_readable+0x108/0x2b0 mm/gup.c:1987 fault_in_iov_iter_readable+0x229/0x280 lib/iov_iter.c:94 generic_perform_write+0x220/0x630 mm/filemap.c:3908 ntfs_file_write_iter+0x5fe/0x6d0 fs/ntfs3/file.c:1082 call_write_iter include/linux/fs.h:2020 [inline] new_sync_write fs/read_write.c:491 [inline] vfs_write+0x792/0xb20 fs/read_write.c:584 ksys_write+0x1a0/0x2c0 fs/read_write.c:637 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x44/0x110 arch/x86/entry/common.c:82 entry_SYSCALL_64_after_hwframe+0x63/0x6b -> #1 (&mm->mmap_lock){++++}-{3:3}: __might_fault+0xc1/0x120 mm/memory.c:5955 _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+0x100b/0x1230 fs/ntfs3/frecord.c:1948 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:51 [inline] do_syscall_64+0x44/0x110 arch/x86/entry/common.c:82 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 kernel/locking/lockdep.c:3868 [inline] __lock_acquire+0x39ff/0x7f70 kernel/locking/lockdep.c:5136 lock_acquire+0x1e3/0x520 kernel/locking/lockdep.c:5753 __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+0x8c2/0x1070 fs/ntfs3/file.c:564 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:51 [inline] do_syscall_64+0x44/0x110 arch/x86/entry/common.c:82 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#13 Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(mapping.invalidate_lock#13); lock(&mm->mmap_lock); lock(mapping.invalidate_lock#13); lock(&ni->ni_lock/4); *** DEADLOCK *** 3 locks held by syz-executor.3/18156: #0: ffff888029450418 (sb_writers#28){.+.+}-{0:0}, at: file_start_write include/linux/fs.h:2713 [inline] #0: ffff888029450418 (sb_writers#28){.+.+}-{0:0}, at: vfs_fallocate+0x4c4/0x6b0 fs/open.c:323 #1: ffff88803545f9a0 (&sb->s_type->i_mutex_key#33){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:802 [inline] #1: ffff88803545f9a0 (&sb->s_type->i_mutex_key#33){+.+.}-{3:3}, at: ntfs_fallocate+0x2dd/0x1070 fs/ntfs3/file.c:470 #2: ffff88803545fb40 (mapping.invalidate_lock#13){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:847 [inline] #2: ffff88803545fb40 (mapping.invalidate_lock#13){++++}-{3:3}, at: ntfs_fallocate+0x3ac/0x1070 fs/ntfs3/file.c:484 stack backtrace: CPU: 0 PID: 18156 Comm: syz-executor.3 Not tainted 6.6.0-syzkaller-15156-g13d88ac54ddd #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/09/2023 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x1e7/0x2d0 lib/dump_stack.c:106 check_noncircular+0x375/0x4a0 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 kernel/locking/lockdep.c:3868 [inline] __lock_acquire+0x39ff/0x7f70 kernel/locking/lockdep.c:5136 lock_acquire+0x1e3/0x520 kernel/locking/lockdep.c:5753 __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+0x8c2/0x1070 fs/ntfs3/file.c:564 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:51 [inline] do_syscall_64+0x44/0x110 arch/x86/entry/common.c:82 entry_SYSCALL_64_after_hwframe+0x63/0x6b RIP: 0033:0x7f327c47cae9 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:00007f327d1220c8 EFLAGS: 00000246 ORIG_RAX: 000000000000011d RAX: ffffffffffffffda RBX: 00007f327c59bf80 RCX: 00007f327c47cae9 RDX: 0000000000000000 RSI: 0000000000000020 RDI: 0000000000000005 RBP: 00007f327c4c847a R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000002000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007f327c59bf80 R15: 00007ffe5eb00828