syzbot has found a reproducer for the following issue on: HEAD commit: 521a547ced64 Linux 6.0-rc6 git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=13cd7937080000 kernel config: https://syzkaller.appspot.com/x/.config?x=122d7bd4fc8e0ecb dashboard link: https://syzkaller.appspot.com/bug?extid=45df7ccc8b5bade4f745 compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=143df15f080000 IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+45df7ccc8b5bade4f745@xxxxxxxxxxxxxxxxxxxxxxxxx ntfs3: loop1: RAW NTFS volume: Filesystem size 0.00 Gb > volume size 0.00 Gb. Mount in read-only ============================= WARNING: suspicious RCU usage 6.0.0-rc6-syzkaller #0 Not tainted ----------------------------- include/trace/events/lock.h:69 suspicious rcu_dereference_check() usage! other info that might help us debug this: rcu_scheduler_active = 2, debug_locks = 1 2 locks held by syz-executor.1/3793: #0: ffff88806df000e0 (&type->s_umount_key#47/1){+.+.}-{3:3}, at: alloc_super+0x22e/0xb60 fs/super.c:228 #1: ffff88806df009d8 (&s->s_inode_list_lock){+.+.}-{2:2}, at: spin_lock include/linux/spinlock.h:349 [inline] #1: ffff88806df009d8 (&s->s_inode_list_lock){+.+.}-{2:2}, at: inode_sb_list_del fs/inode.c:503 [inline] #1: ffff88806df009d8 (&s->s_inode_list_lock){+.+.}-{2:2}, at: evict+0x179/0x6b0 fs/inode.c:654 stack backtrace: CPU: 1 PID: 3793 Comm: syz-executor.1 Not tainted 6.0.0-rc6-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/26/2022 Call Trace: <TASK> __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106 trace_lock_release include/trace/events/lock.h:69 [inline] lock_release.cold+0x1f/0x4e kernel/locking/lockdep.c:5677 __raw_spin_unlock include/linux/spinlock_api_smp.h:141 [inline] _raw_spin_unlock+0x12/0x40 kernel/locking/spinlock.c:186 spin_unlock include/linux/spinlock.h:389 [inline] inode_sb_list_del fs/inode.c:505 [inline] evict+0x2aa/0x6b0 fs/inode.c:654 iput_final fs/inode.c:1748 [inline] iput.part.0+0x55d/0x810 fs/inode.c:1774 iput+0x58/0x70 fs/inode.c:1764 ntfs_fill_super+0x2309/0x37f0 fs/ntfs3/super.c:1278 get_tree_bdev+0x440/0x760 fs/super.c:1323 vfs_get_tree+0x89/0x2f0 fs/super.c:1530 do_new_mount fs/namespace.c:3040 [inline] path_mount+0x1326/0x1e20 fs/namespace.c:3370 do_mount fs/namespace.c:3383 [inline] __do_sys_mount fs/namespace.c:3591 [inline] __se_sys_mount fs/namespace.c:3568 [inline] __x64_sys_mount+0x27f/0x300 fs/namespace.c:3568 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f67e5a8a93a 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:00007f67e6cb5f88 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 0000000020000200 RCX: 00007f67e5a8a93a RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007f67e6cb5fe0 RBP: 00007f67e6cb6020 R08: 00007f67e6cb6020 R09: 0000000020000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000020000000 R13: 0000000020000100 R14: 00007f67e6cb5fe0 R15: 0000000020003580 </TASK>
