BUG: kernel NULL pointer dereference, address: 000000000000005c #PF: supervisor write access in kernel mode #PF: error_code(0x0002) - not-present page PGD 16455067 P4D 16455067 PUD 74e0e067 PMD 0 Oops: 0002 [#1] PREEMPT SMP KASAN CPU: 1 PID: 17150 Comm: syz-executor133 Not tainted 5.18.0-rc1-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 RIP: 0010:rcu_rnp_online_cpus kernel/rcu/tree.c:222 [inline] RIP: 0010:rcu_rdp_cpu_online kernel/rcu/tree.c:232 [inline] RIP: 0010:rcu_lockdep_current_cpu_online kernel/rcu/tree.c:1193 [inline] RIP: 0010:rcu_lockdep_current_cpu_online+0xc4/0x140 kernel/rcu/tree.c:1177 Code: df 48 89 fa 48 c1 ea 03 80 3c 02 00 75 72 48 b8 00 00 00 00 00 fc ff df 48 8b 5b 18 48 8d 7b 70 48 89 fa 48 c1 ea 03 80 3c 02 <00> 75 5a 48 8b 53 70 b8 01 00 00 00 48 85 d5 74 0c 65 ff 0d f4 3e RSP: 0018:ffffc9000af9fa30 EFLAGS: 00010246 RAX: dffffc0000000000 RBX: ffffffff8af81b00 RCX: ffffffff81556178 RDX: 1ffffffff15f036e RSI: ffffffff894348a0 RDI: ffffffff8af81b70 RBP: 0000000000000002 R08: 0000000000000000 R09: ffffffff8cc78557 R10: fffffbfff198f0aa R11: 0000000000000001 R12: 0000000000000001 R13: 0000000000000000 R14: ffff888064dd9910 R15: 0000000000000000 FS: 000055555696f300(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000000000005c CR3: 00000000234a1000 CR4: 0000000000350ee0 Call Trace: rcu_read_lock_held_common kernel/rcu/update.c:112 [inline] rcu_read_lock_held_common kernel/rcu/update.c:102 [inline] rcu_read_lock_sched_held+0x25/0x70 kernel/rcu/update.c:123 trace_lock_acquire include/trace/events/lock.h:13 [inline] lock_acquire+0x442/0x510 kernel/locking/lockdep.c:5612 __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] iput_final fs/inode.c:1733 [inline] iput.part.0+0x36b/0x6a0 fs/inode.c:1770 ntfs_fill_super+0x2414/0x3120 fs/ntfs3/super.c:1178 get_tree_bdev+0x398/0x680 fs/super.c:1292 vfs_get_tree+0x7f/0x2c0 fs/super.c:1497 do_new_mount fs/namespace.c:3040 [inline] path_mount+0x7e8/0x1a40 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+0x1f5/0x260 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+0x44/0xae RIP: 0033:0x7f6d21d16e5a Code: 48 c7 c2 c0 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff eb d2 e8 c8 03 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 c0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffc796c9bf8 EFLAGS: 00000286 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f6d21d16e5a RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007ffc796c9c10 RBP: 00007ffc796c9c10 R08: 00007ffc796c9c50 R09: 00007ffc796c9c50 R10: 0000000000000000 R11: 0000000000000286 R12: 0000000000000004 R13: 00007ffc796c9c50 R14: 000000000000010e R15: 0000000020001b50 Modules linked in: CR2: 000000000000005c ---[ end trace 0000000000000000 ]--- RIP: 0010:rcu_rnp_online_cpus kernel/rcu/tree.c:222 [inline] RIP: 0010:rcu_rdp_cpu_online kernel/rcu/tree.c:232 [inline] RIP: 0010:rcu_lockdep_current_cpu_online kernel/rcu/tree.c:1193 [inline] RIP: 0010:rcu_lockdep_current_cpu_online+0xc4/0x140 kernel/rcu/tree.c:1177 Code: df 48 89 fa 48 c1 ea 03 80 3c 02 00 75 72 48 b8 00 00 00 00 00 fc ff df 48 8b 5b 18 48 8d 7b 70 48 89 fa 48 c1 ea 03 80 3c 02 <00> 75 5a 48 8b 53 70 b8 01 00 00 00 48 85 d5 74 0c 65 ff 0d f4 3e RSP: 0018:ffffc9000af9fa30 EFLAGS: 00010246 RAX: dffffc0000000000 RBX: ffffffff8af81b00 RCX: ffffffff81556178 RDX: 1ffffffff15f036e RSI: ffffffff894348a0 RDI: ffffffff8af81b70 RBP: 0000000000000002 R08: 0000000000000000 R09: ffffffff8cc78557 R10: fffffbfff198f0aa R11: 0000000000000001 R12: 0000000000000001 R13: 0000000000000000 R14: ffff888064dd9910 R15: 0000000000000000 FS: 000055555696f300(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000000000005c CR3: 00000000234a1000 CR4: 0000000000350ee0