F2FS-fs (loop1): Found nat_bits in checkpoint F2FS-fs (loop1): Mounted with checkpoint version = 48b305e5 ------------[ cut here ]------------ kernel BUG at fs/f2fs/node.c:2780! invalid opcode: 0000 [#1] PREEMPT SMP KASAN Modules linked in: CPU: 1 PID: 7977 Comm: syz-executor.1 Not tainted 4.14.304-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023 task: ffff888095fba500 task.stack: ffff888095a08000 RIP: 0010:destroy_node_manager+0x4f4/0x780 fs/f2fs/node.c:2780 RSP: 0018:ffff888095a0f8c0 EFLAGS: 00010297 RAX: ffff888095fba500 RBX: ffff8880930cb2f0 RCX: dffffc0000000000 RDX: 0000000000000000 RSI: 0000000000000001 RDI: ffff8880930cb314 RBP: ffff8880930cb200 R08: ffffffff8b9e3da0 R09: 0000000000040675 R10: ffff888095fbadb0 R11: ffff888095fba500 R12: ffff8880930cb318 R13: ffffed101537cc16 R14: ffff8880930cb2f0 R15: ffff8880a9be6080 FS: 0000555556faa400(0000) GS:ffff8880ba500000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f46da48a000 CR3: 00000000b453a000 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 RIP: 0033:0x7f46da36f537 RSP: 002b:00007ffdedd19888 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f46da36f537 RDX: 00007ffdedd1995a RSI: 000000000000000a RDI: 00007ffdedd19950 RBP: 00007ffdedd19950 R08: 00000000ffffffff R09: 00007ffdedd19720 R10: 0000555556fab903 R11: 0000000000000246 R12: 00007f46da3c8b24 R13: 00007ffdedd1aa10 R14: 0000555556fab810 R15: 00007ffdedd1aa50 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 6a 38 89 fe 0f 0b e8 63 38 89 fe 0f 0b e8 5c 38 89 fe <0f> 0b e8 55 38 89 fe 0f 0b e8 4e 38 89 fe 48 8b 7c 24 28 e8 74 RIP: destroy_node_manager+0x4f4/0x780 fs/f2fs/node.c:2780 RSP: ffff888095a0f8c0 ---[ end trace 1cb953f702bd8e43 ]---