================================== WARNING: Nested lock was not taken 6.0.0-syzkaller-03015-g2bca25eaeba6 #0 Not tainted ---------------------------------- syz-executor.5/7399 is trying to lock: ffff888071a73df0 (&sb->s_type->i_lock_key#38){+.+.}-{2:2}, at: spin_lock include/linux/spinlock.h:349 [inline] ffff888071a73df0 (&sb->s_type->i_lock_key#38){+.+.}-{2:2}, at: _atomic_dec_and_lock+0x9d/0x110 lib/dec_and_lock.c:28 but this task is not holding: general protection fault, probably for non-canonical address 0xdffffc0020000002: 0000 [#1] PREEMPT SMP KASAN KASAN: probably user-memory-access in range [0x0000000100000010-0x0000000100000017] CPU: 1 PID: 7399 Comm: syz-executor.5 Not tainted 6.0.0-syzkaller-03015-g2bca25eaeba6 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 RIP: 0010:print_lock_nested_lock_not_held kernel/locking/lockdep.c:4885 [inline] RIP: 0010:__lock_acquire+0x1112/0x1f60 kernel/locking/lockdep.c:5044 Code: 3c 30 00 48 8b 5c 24 70 74 12 48 89 df e8 46 42 73 00 49 be 00 00 00 00 00 fc ff df 48 8b 1b 48 83 c3 18 48 89 d8 48 c1 e8 03 <42> 80 3c 30 00 74 08 48 89 df e8 1f 42 73 00 48 8b 33 45 31 f6 48 RSP: 0018:ffffc9000b997828 EFLAGS: 00010003 RAX: 0000000020000002 RBX: 0000000100000017 RCX: 49146bf16a0ae700 RDX: 0000000000000000 RSI: 0000000080000001 RDI: 0000000000000000 RBP: ffff8880748b2360 R08: ffffffff816af5fd R09: ffffed1017364f13 R10: ffffed1017364f13 R11: 1ffff11017364f12 R12: ffff8880748b25c8 R13: 064adf1004951b80 R14: dffffc0000000000 R15: ffff8880748b1d80 FS: 00007fcc849fe700(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f691ac9c018 CR3: 000000001d1c6000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: lock_acquire+0x182/0x3c0 kernel/locking/lockdep.c:5666 __raw_spin_lock include/linux/spinlock_api_smp.h:133 [inline] _raw_spin_lock+0x2a/0x40 kernel/locking/spinlock.c:154 spin_lock include/linux/spinlock.h:349 [inline] _atomic_dec_and_lock+0x9d/0x110 lib/dec_and_lock.c:28 iput+0x85/0x760 fs/inode.c:1766 ntfs_fill_super+0x3af3/0x42a0 fs/ntfs3/super.c:1190 get_tree_bdev+0x400/0x620 fs/super.c:1323 vfs_get_tree+0x88/0x270 fs/super.c:1530 do_new_mount+0x289/0xad0 fs/namespace.c:3040 do_mount fs/namespace.c:3383 [inline] __do_sys_mount fs/namespace.c:3591 [inline] __se_sys_mount+0x2d3/0x3c0 fs/namespace.c:3568 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7fcc85a8bada Code: 48 c7 c2 b8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff eb d2 e8 b8 04 00 00 0f 1f 84 00 00 00 00 00 49 89 ca b8 a5 00 00 00 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:00007fcc849fdf88 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 0000000020000200 RCX: 00007fcc85a8bada RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007fcc849fdfe0 RBP: 00007fcc849fe020 R08: 00007fcc849fe020 R09: 0000000020000000 R10: 0000000000000000 R11: 0000000000000202 R12: 0000000020000000 R13: 0000000020000100 R14: 00007fcc849fdfe0 R15: 0000000020002680 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:print_lock_nested_lock_not_held kernel/locking/lockdep.c:4885 [inline] RIP: 0010:__lock_acquire+0x1112/0x1f60 kernel/locking/lockdep.c:5044 Code: 3c 30 00 48 8b 5c 24 70 74 12 48 89 df e8 46 42 73 00 49 be 00 00 00 00 00 fc ff df 48 8b 1b 48 83 c3 18 48 89 d8 48 c1 e8 03 <42> 80 3c 30 00 74 08 48 89 df e8 1f 42 73 00 48 8b 33 45 31 f6 48 RSP: 0018:ffffc9000b997828 EFLAGS: 00010003 RAX: 0000000020000002 RBX: 0000000100000017 RCX: 49146bf16a0ae700 RDX: 0000000000000000 RSI: 0000000080000001 RDI: 0000000000000000 RBP: ffff8880748b2360 R08: ffffffff816af5fd R09: ffffed1017364f13 R10: ffffed1017364f13 R11: 1ffff11017364f12 R12: ffff8880748b25c8 R13: 064adf1004951b80 R14: dffffc0000000000 R15: ffff8880748b1d80 FS: 00007fcc849fe700(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f691ac9c018 CR3: 000000001d1c6000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 3c 30 cmp $0x30,%al 2: 00 48 8b add %cl,-0x75(%rax) 5: 5c pop %rsp 6: 24 70 and $0x70,%al 8: 74 12 je 0x1c a: 48 89 df mov %rbx,%rdi d: e8 46 42 73 00 callq 0x734258 12: 49 be 00 00 00 00 00 movabs $0xdffffc0000000000,%r14 19: fc ff df 1c: 48 8b 1b mov (%rbx),%rbx 1f: 48 83 c3 18 add $0x18,%rbx 23: 48 89 d8 mov %rbx,%rax 26: 48 c1 e8 03 shr $0x3,%rax * 2a: 42 80 3c 30 00 cmpb $0x0,(%rax,%r14,1) <-- trapping instruction 2f: 74 08 je 0x39 31: 48 89 df mov %rbx,%rdi 34: e8 1f 42 73 00 callq 0x734258 39: 48 8b 33 mov (%rbx),%rsi 3c: 45 31 f6 xor %r14d,%r14d 3f: 48 rex.W