====================================================== WARNING: possible circular locking dependency detected 6.12.0-rc5-syzkaller-00181-g6c52d4da1c74 #0 Not tainted ------------------------------------------------------ syz-executor/7142 is trying to acquire lock: ffff88805b69e7d0 (&ni->ni_lock#3/6){+.+.}-{3:3}, at: ni_lock_dir fs/ntfs3/ntfs_fs.h:1114 [inline] ffff88805b69e7d0 (&ni->ni_lock#3/6){+.+.}-{3:3}, at: ntfs_unlink+0xb1/0xf0 fs/ntfs3/namei.c:177 but task is already holding lock: ffff88805b6fbe58 (&sb->s_type->i_mutex_key#32){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:815 [inline] ffff88805b6fbe58 (&sb->s_type->i_mutex_key#32){+.+.}-{3:3}, at: vfs_unlink+0xe4/0x650 fs/namei.c:4458 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #3 (&sb->s_type->i_mutex_key#32){+.+.}-{3:3}: lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5825 down_write+0x99/0x220 kernel/locking/rwsem.c:1577 inode_lock include/linux/fs.h:815 [inline] ntfs_file_mmap+0x5bc/0x850 fs/ntfs3/file.c:377 call_mmap include/linux/fs.h:2172 [inline] mmap_region+0x1689/0x2940 mm/mmap.c:1449 do_mmap+0x8f0/0x1000 mm/mmap.c:496 vm_mmap_pgoff+0x1dd/0x3d0 mm/util.c:588 ksys_mmap_pgoff+0x4eb/0x720 mm/mmap.c:542 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f -> #2 (&mm->mmap_lock){++++}-{3:3}: lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5825 __might_fault+0xc6/0x120 mm/memory.c:6716 _inline_copy_to_user include/linux/uaccess.h:192 [inline] _copy_to_user+0x2c/0xb0 lib/usercopy.c:26 copy_to_user include/linux/uaccess.h:225 [inline] ni_fiemap+0x57c/0x18c0 fs/ntfs3/frecord.c:2139 ntfs_fiemap+0x132/0x180 fs/ntfs3/file.c:1352 ioctl_fiemap fs/ioctl.c:220 [inline] do_vfs_ioctl+0x1bf8/0x2e40 fs/ioctl.c:841 __do_sys_ioctl fs/ioctl.c:905 [inline] __se_sys_ioctl+0x81/0x170 fs/ioctl.c:893 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f -> #1 (&ni->ni_lock/5){+.+.}-{3:3}: lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5825 __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:1109 [inline] ntfs_rename+0x74a/0xd10 fs/ntfs3/namei.c:312 vfs_rename+0xbdb/0xf00 fs/namei.c:5013 do_renameat2+0xd94/0x13f0 fs/namei.c:5170 __do_sys_renameat2 fs/namei.c:5204 [inline] __se_sys_renameat2 fs/namei.c:5201 [inline] __x64_sys_renameat2+0xce/0xe0 fs/namei.c:5201 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f -> #0 (&ni->ni_lock#3/6){+.+.}-{3:3}: check_prev_add kernel/locking/lockdep.c:3161 [inline] check_prevs_add kernel/locking/lockdep.c:3280 [inline] validate_chain+0x18ef/0x5920 kernel/locking/lockdep.c:3904 __lock_acquire+0x1384/0x2050 kernel/locking/lockdep.c:5202 lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5825 __mutex_lock_common kernel/locking/mutex.c:608 [inline] __mutex_lock+0x136/0xd70 kernel/locking/mutex.c:752 ni_lock_dir fs/ntfs3/ntfs_fs.h:1114 [inline] ntfs_unlink+0xb1/0xf0 fs/ntfs3/namei.c:177 vfs_unlink+0x365/0x650 fs/namei.c:4469 do_unlinkat+0x4ae/0x830 fs/namei.c:4533 __do_sys_unlink fs/namei.c:4581 [inline] __se_sys_unlink fs/namei.c:4579 [inline] __x64_sys_unlink+0x47/0x50 fs/namei.c:4579 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f other info that might help us debug this: Chain exists of: &ni->ni_lock#3/6 --> &mm->mmap_lock --> &sb->s_type->i_mutex_key#32 Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(&sb->s_type->i_mutex_key#32); lock(&mm->mmap_lock); lock(&sb->s_type->i_mutex_key#32); lock(&ni->ni_lock#3/6); *** DEADLOCK *** 3 locks held by syz-executor/7142: #0: ffff8880122e6420 (sb_writers#20){.+.+}-{0:0}, at: mnt_want_write+0x3f/0x90 fs/namespace.c:515 #1: ffff88805b69ea68 (&type->i_mutex_dir_key#15/1){+.+.}-{3:3}, at: inode_lock_nested include/linux/fs.h:850 [inline] #1: ffff88805b69ea68 (&type->i_mutex_dir_key#15/1){+.+.}-{3:3}, at: do_unlinkat+0x26a/0x830 fs/namei.c:4520 #2: ffff88805b6fbe58 (&sb->s_type->i_mutex_key#32){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:815 [inline] #2: ffff88805b6fbe58 (&sb->s_type->i_mutex_key#32){+.+.}-{3:3}, at: vfs_unlink+0xe4/0x650 fs/namei.c:4458 stack backtrace: CPU: 0 UID: 0 PID: 7142 Comm: syz-executor Not tainted 6.12.0-rc5-syzkaller-00181-g6c52d4da1c74 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 Call Trace: __dump_stack lib/dump_stack.c:94 [inline] dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120 print_circular_bug+0x13a/0x1b0 kernel/locking/lockdep.c:2074 check_noncircular+0x36a/0x4a0 kernel/locking/lockdep.c:2206 check_prev_add kernel/locking/lockdep.c:3161 [inline] check_prevs_add kernel/locking/lockdep.c:3280 [inline] validate_chain+0x18ef/0x5920 kernel/locking/lockdep.c:3904 __lock_acquire+0x1384/0x2050 kernel/locking/lockdep.c:5202 lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5825 __mutex_lock_common kernel/locking/mutex.c:608 [inline] __mutex_lock+0x136/0xd70 kernel/locking/mutex.c:752 ni_lock_dir fs/ntfs3/ntfs_fs.h:1114 [inline] ntfs_unlink+0xb1/0xf0 fs/ntfs3/namei.c:177 vfs_unlink+0x365/0x650 fs/namei.c:4469 do_unlinkat+0x4ae/0x830 fs/namei.c:4533 __do_sys_unlink fs/namei.c:4581 [inline] __se_sys_unlink fs/namei.c:4579 [inline] __x64_sys_unlink+0x47/0x50 fs/namei.c:4579 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fb67557dcc7 Code: 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 57 00 00 00 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:00007ffc533d4498 EFLAGS: 00000206 ORIG_RAX: 0000000000000057 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fb67557dcc7 RDX: 00007ffc533d44c0 RSI: 00007ffc533d4550 RDI: 00007ffc533d4550 RBP: 00007ffc533d4550 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000100 R11: 0000000000000206 R12: 00007ffc533d5640 R13: 00007fb6755f11cc R14: 000000000002d527 R15: 00007ffc533d6700 ocfs2: Unmounting device (7,7) on (node local)