netlink: 8 bytes leftover after parsing attributes in process `syz-executor.1'.
------------[ cut here ]------------
kernel BUG at fs/f2fs/node.c:2780!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
Modules linked in:
CPU: 1 PID: 8018 Comm: syz-executor.4 Not tainted 4.14.299-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
task: ffff8880a3246400 task.stack: ffff8880a2150000
RIP: 0010:destroy_node_manager+0x4f4/0x780 fs/f2fs/node.c:2780
RSP: 0018:ffff8880a21578c0 EFLAGS: 00010297
RAX: ffff8880a3246400 RBX: ffff88809f3aeeb0 RCX: dffffc0000000000
RDX: 0000000000000000 RSI: 0000000000000001 RDI: ffff88809f3aeed4
RBP: ffff88809f3aedc0 R08: ffffffff8b9b7528 R09: 0000000000040779
R10: ffff8880a3246cb0 R11: ffff8880a3246400 R12: ffff88809f3aeed8
R13: ffffed100770bce6 R14: ffff88809f3aeeb0 R15: ffff88803b85e700
FS:  0000555555fba400(0000) GS:ffff8880ba500000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2f634000 CR3: 000000009ca0b000 CR4: 00000000003406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 f2fs_put_super+0x3e1/0x840 fs/f2fs/super.c:835
 generic_shutdown_super+0x144/0x370 fs/super.c:446
 kill_block_super+0x95/0xe0 fs/super.c:1161
 deactivate_locked_super+0x6c/0xd0 fs/super.c:319
 deactivate_super+0x7f/0xa0 fs/super.c:350
 cleanup_mnt+0x186/0x2c0 fs/namespace.c:1183
 task_work_run+0x11f/0x190 kernel/task_work.c:113
 tracehook_notify_resume include/linux/tracehook.h:191 [inline]
 exit_to_usermode_loop+0x1ad/0x200 arch/x86/entry/common.c:164
 prepare_exit_to_usermode arch/x86/entry/common.c:199 [inline]
 syscall_return_slowpath arch/x86/entry/common.c:270 [inline]
 do_syscall_64+0x4a3/0x640 arch/x86/entry/common.c:297
 entry_SYSCALL_64_after_hwframe+0x5e/0xd3
Code: 40 6c 00 00 00 00 48 81 c4 d8 03 00 00 5b 5d 41 5c 41 5d 41 5e 41 5f c3 e8 da 42 89 fe 0f 0b e8 d3 42 89 fe 0f 0b e8 cc 42 89 fe <0f> 0b e8 c5 42 89 fe 0f 0b e8 be 42 89 fe 48 8b 7c 24 28 e8 74 
RIP: destroy_node_manager+0x4f4/0x780 fs/f2fs/node.c:2780 RSP: ffff8880a21578c0
---[ end trace 3c6788a8b08ac1b9 ]---
unregister_netdevice: waiting for ip6gre0 to become free. Usage count = -1