------------[ cut here ]------------ kernel BUG at fs/f2fs/node.c:2780! invalid opcode: 0000 [#1] PREEMPT SMP KASAN Modules linked in: CPU: 1 PID: 7999 Comm: syz-executor.2 Not tainted 4.14.307-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/16/2023 task: ffff8880a3494580 task.stack: ffff88808fb50000 RIP: 0010:destroy_node_manager+0x4f4/0x780 fs/f2fs/node.c:2780 RSP: 0018:ffff88808fb578c0 EFLAGS: 00010297 RAX: ffff8880a3494580 RBX: ffff8880b4d5c0f0 RCX: dffffc0000000000 RDX: 0000000000000000 RSI: 0000000000000001 RDI: ffff8880b4d5c114 RBP: ffff8880b4d5c000 R08: ffffffff8b9cd538 R09: 000000000004065f R10: ffff8880a3494e30 R11: ffff8880a3494580 R12: ffff8880b4d5c118 R13: ffffed10122945be R14: ffff8880b4d5c0f0 R15: ffff8880914a2dc0 FS: 0000555555b83400(0000) GS:ffff8880ba500000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fea1c3e6000 CR3: 00000000a2d19000 CR4: 00000000003426e0 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: 0033:0x7f6d44bae567 RSP: 002b:00007fff7f4b3b18 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f6d44bae567 RDX: 00007fff7f4b3be9 RSI: 000000000000000a RDI: 00007fff7f4b3be0 RBP: 00007fff7f4b3be0 R08: 00000000ffffffff R09: 00007fff7f4b39b0 R10: 0000555555b84903 R11: 0000000000000246 R12: 00007f6d44c07b24 R13: 00007fff7f4b4ca0 R14: 0000555555b84810 R15: 00007fff7f4b4ce0 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 3a 35 89 fe 0f 0b e8 33 35 89 fe 0f 0b e8 2c 35 89 fe <0f> 0b e8 25 35 89 fe 0f 0b e8 1e 35 89 fe 48 8b 7c 24 28 e8 14 RIP: destroy_node_manager+0x4f4/0x780 fs/f2fs/node.c:2780 RSP: ffff88808fb578c0 ---[ end trace e65d347b66a0c871 ]---