loop0: detected capacity change from 0 to 4096 ntfs3(loop0): Different NTFS sector size (4096) and media sector size (512). ntfs3(loop0): ino=19, mi_enum_attr ntfs3(loop0): Mark volume as dirty due to NTFS errors ntfs3(loop0): Failed to initialize $Extend/$ObjId. ====================================================== WARNING: possible circular locking dependency detected syzkaller #0 Not tainted ------------------------------------------------------ syz.0.0/5335 is trying to acquire lock: ffff888042cbbda8 (mapping.invalidate_lock#3){++++}-{4:4}, at: filemap_invalidate_lock_shared include/linux/fs.h:1089 [inline] ffff888042cbbda8 (mapping.invalidate_lock#3){++++}-{4:4}, at: do_page_cache_ra mm/readahead.c:347 [inline] ffff888042cbbda8 (mapping.invalidate_lock#3){++++}-{4:4}, at: page_cache_ra_order+0xb37/0xee0 mm/readahead.c:558 but task is already holding lock: ffff888042cb00f8 (&ni->ni_lock/5){+.+.}-{4:4}, at: ni_lock fs/ntfs3/ntfs_fs.h:1250 [inline] ffff888042cb00f8 (&ni->ni_lock/5){+.+.}-{4:4}, at: ntfs_readdir+0x70e/0xf60 fs/ntfs3/dir.c:550 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #1 (&ni->ni_lock/5){+.+.}-{4:4}: __mutex_lock_common kernel/locking/mutex.c:646 [inline] __mutex_lock+0x197/0x15a0 kernel/locking/mutex.c:821 ni_lock fs/ntfs3/ntfs_fs.h:1250 [inline] ntfs_fallocate+0x9db/0x1080 fs/ntfs3/file.c:617 vfs_fallocate+0x65a/0x7e0 fs/open.c:338 ksys_fallocate fs/open.c:362 [inline] __do_sys_fallocate fs/open.c:367 [inline] __se_sys_fallocate fs/open.c:365 [inline] __x64_sys_fallocate+0xbf/0x110 fs/open.c:365 do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline] do_syscall_64+0x166/0x520 arch/x86/entry/syscall_64.c:84 entry_SYSCALL_64_after_hwframe+0x77/0x7f -> #0 (mapping.invalidate_lock#3){++++}-{4:4}: check_prev_add kernel/locking/lockdep.c:3209 [inline] check_prevs_add kernel/locking/lockdep.c:3328 [inline] validate_chain kernel/locking/lockdep.c:3952 [inline] __lock_acquire+0x164c/0x2de0 kernel/locking/lockdep.c:5288 lock_acquire+0x115/0x350 kernel/locking/lockdep.c:5942 down_read+0x45/0x320 kernel/locking/rwsem.c:1574 filemap_invalidate_lock_shared include/linux/fs.h:1089 [inline] do_page_cache_ra mm/readahead.c:347 [inline] page_cache_ra_order+0xb37/0xee0 mm/readahead.c:558 do_sync_mmap_readahead+0x75e/0x990 mm/filemap.c:3443 filemap_fault+0x7d9/0x13b0 mm/filemap.c:3597 __do_fault+0x138/0x2a0 mm/memory.c:5565 do_shared_fault mm/memory.c:6064 [inline] do_fault mm/memory.c:6138 [inline] do_pte_missing+0x684/0x34b0 mm/memory.c:4700 handle_pte_fault mm/memory.c:6558 [inline] __handle_mm_fault mm/memory.c:6707 [inline] handle_mm_fault+0x1a53/0x3750 mm/memory.c:6876 do_user_addr_fault+0x7f6/0x1480 arch/x86/mm/fault.c:1394 handle_page_fault arch/x86/mm/fault.c:1483 [inline] exc_page_fault+0x6a/0xc0 arch/x86/mm/fault.c:1536 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:595 filldir+0x2b0/0x690 fs/readdir.c:-1 dir_emit include/linux/fs.h:3612 [inline] ntfs_dir_emit fs/ntfs3/dir.c:397 [inline] ntfs_read_hdr+0x8b0/0xc10 fs/ntfs3/dir.c:438 ntfs_readdir+0x9a2/0xf60 fs/ntfs3/dir.c:598 iterate_dir+0x3db/0x880 fs/readdir.c:114 __do_sys_getdents fs/readdir.c:324 [inline] __se_sys_getdents+0xf1/0x270 fs/readdir.c:309 do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline] do_syscall_64+0x166/0x520 arch/x86/entry/syscall_64.c:84 entry_SYSCALL_64_after_hwframe+0x77/0x7f other info that might help us debug this: Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(&ni->ni_lock/5); lock(mapping.invalidate_lock#3); lock(&ni->ni_lock/5); rlock(mapping.invalidate_lock#3); *** DEADLOCK *** locks held by syz.0.0/5335: 3, last CPU#0: #0: ffff888045abe7f0 (&f->f_pos_lock){+.+.}-{4:4}, at: fdget_pos+0x118/0x160 fs/file.c:1408 #1: ffff888042cb0390 (&type->i_mutex_dir_key#8){++++}-{4:4}, at: iterate_dir+0x287/0x880 fs/readdir.c:106 #2: ffff888042cb00f8 (&ni->ni_lock/5){+.+.}-{4:4}, at: ni_lock fs/ntfs3/ntfs_fs.h:1250 [inline] #2: ffff888042cb00f8 (&ni->ni_lock/5){+.+.}-{4:4}, at: ntfs_readdir+0x70e/0xf60 fs/ntfs3/dir.c:550 stack backtrace: CPU: 0 UID: 0 PID: 5335 Comm: syz.0.0 Not tainted syzkaller #0 PREEMPT(full) Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 Call Trace: dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120 print_circular_bug+0x2e2/0x300 kernel/locking/lockdep.c:2087 check_noncircular+0x12f/0x150 kernel/locking/lockdep.c:2219 check_prev_add kernel/locking/lockdep.c:3209 [inline] check_prevs_add kernel/locking/lockdep.c:3328 [inline] validate_chain kernel/locking/lockdep.c:3952 [inline] __lock_acquire+0x164c/0x2de0 kernel/locking/lockdep.c:5288 lock_acquire+0x115/0x350 kernel/locking/lockdep.c:5942 down_read+0x45/0x320 kernel/locking/rwsem.c:1574 filemap_invalidate_lock_shared include/linux/fs.h:1089 [inline] do_page_cache_ra mm/readahead.c:347 [inline] page_cache_ra_order+0xb37/0xee0 mm/readahead.c:558 do_sync_mmap_readahead+0x75e/0x990 mm/filemap.c:3443 filemap_fault+0x7d9/0x13b0 mm/filemap.c:3597 __do_fault+0x138/0x2a0 mm/memory.c:5565 do_shared_fault mm/memory.c:6064 [inline] do_fault mm/memory.c:6138 [inline] do_pte_missing+0x684/0x34b0 mm/memory.c:4700 handle_pte_fault mm/memory.c:6558 [inline] __handle_mm_fault mm/memory.c:6707 [inline] handle_mm_fault+0x1a53/0x3750 mm/memory.c:6876 do_user_addr_fault+0x7f6/0x1480 arch/x86/mm/fault.c:1394 handle_page_fault arch/x86/mm/fault.c:1483 [inline] exc_page_fault+0x6a/0xc0 arch/x86/mm/fault.c:1536 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:595 RIP: 0010:filldir+0x2b0/0x690 fs/readdir.c:295 Code: e8 85 b1 73 ff 0f 01 cb 48 8b 44 24 30 48 89 45 08 48 8b 44 24 08 49 89 07 49 8d 47 10 48 bd 00 00 00 00 00 fc ff df 8b 0c 24 <66> 89 08 8b 74 24 04 40 80 e6 0f 89 c9 49 8d 04 0f 48 ff c8 40 88 RSP: 0018:ffffc9000ef57ab8 EFLAGS: 00050297 RAX: 0000200000002000 RBX: ffffc9000ef57e38 RCX: 0000000000000018 RDX: 0000000000000002 RSI: 0000000000000003 RDI: 0000000000000007 RBP: dffffc0000000000 R08: ffff888035f20007 R09: 1ffff11006be4000 R10: dffffc0000000000 R11: ffffed1006be4001 R12: ffff888054ce8000 R13: 0000000000000003 R14: 0000000000000003 R15: 0000200000001ff0 dir_emit include/linux/fs.h:3612 [inline] ntfs_dir_emit fs/ntfs3/dir.c:397 [inline] ntfs_read_hdr+0x8b0/0xc10 fs/ntfs3/dir.c:438 ntfs_readdir+0x9a2/0xf60 fs/ntfs3/dir.c:598 iterate_dir+0x3db/0x880 fs/readdir.c:114 __do_sys_getdents fs/readdir.c:324 [inline] __se_sys_getdents+0xf1/0x270 fs/readdir.c:309 do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline] do_syscall_64+0x166/0x520 arch/x86/entry/syscall_64.c:84 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fb6c559f559 Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 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 e8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fb6c648ffe8 EFLAGS: 00000246 ORIG_RAX: 000000000000004e RAX: ffffffffffffffda RBX: 00007fb6c5825fa0 RCX: 00007fb6c559f559 RDX: 00000000000000b8 RSI: 0000200000001fc0 RDI: 0000000000000004 RBP: 00007fb6c5636b20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fb6c5826038 R14: 00007fb6c5825fa0 R15: 00007ffd74c4e3e8 ntfs3(loop0): failed to convert "c46c" to macturkish ntfs3(loop0): ino=20, mi_enum_attr ---------------- Code disassembly (best guess): 0: e8 85 b1 73 ff call 0xff73b18a 5: 0f 01 cb stac 8: 48 8b 44 24 30 mov 0x30(%rsp),%rax d: 48 89 45 08 mov %rax,0x8(%rbp) 11: 48 8b 44 24 08 mov 0x8(%rsp),%rax 16: 49 89 07 mov %rax,(%r15) 19: 49 8d 47 10 lea 0x10(%r15),%rax 1d: 48 bd 00 00 00 00 00 movabs $0xdffffc0000000000,%rbp 24: fc ff df 27: 8b 0c 24 mov (%rsp),%ecx * 2a: 66 89 08 mov %cx,(%rax) <-- trapping instruction 2d: 8b 74 24 04 mov 0x4(%rsp),%esi 31: 40 80 e6 0f and $0xf,%sil 35: 89 c9 mov %ecx,%ecx 37: 49 8d 04 0f lea (%r15,%rcx,1),%rax 3b: 48 ff c8 dec %rax 3e: 40 rex 3f: 88 .byte 0x88