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kernel BUG at fs/f2fs/inode.c:977!
Oops: invalid opcode: 0000 [#1] SMP KASAN NOPTI
CPU: 0 UID: 0 PID: 69 Comm: kswapd0 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
RIP: 0010:f2fs_evict_inode+0x1ad8/0x1af0 fs/f2fs/inode.c:977
Code: 00 00 00 e8 5a f9 7f fd 65 49 ff 47 08 49 bc 00 00 00 00 00 fc ff df e9 ba e7 ff ff e8 81 71 9b fd 90 0f 0b e8 79 71 9b fd 90 <0f> 0b e8 71 71 9b fd 90 0f 0b 90 e9 9a fe ff ff 0f 1f 84 00 00 00
RSP: 0000:ffffc90000b0f060 EFLAGS: 00010293
RAX: ffffffff842a2607 RBX: ffff8880119449c0 RCX: ffff888000e0a480
RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000000
RBP: ffffc90000b0f210 R08: ffff888011944e57 R09: 1ffff110023289ca
R10: dffffc0000000000 R11: ffffed10023289cb R12: dffffc0000000000
R13: 1ffff11002328940 R14: 0000000000000002 R15: ffff888011944e50
FS:  0000000000000000(0000) GS:ffff88808ca5d000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fe3c5cf66c8 CR3: 000000003b1fb000 CR4: 0000000000352ef0
Call Trace:
 <TASK>
 evict+0x61e/0xb10 fs/inode.c:846
 dispose_list fs/inode.c:888 [inline]
 prune_icache_sb+0x223/0x2d0 fs/inode.c:1036
 super_cache_scan+0x39b/0x4b0 fs/super.c:225
 do_shrink_slab+0x6df/0x1170 mm/shrinker.c:437
 shrink_slab_memcg mm/shrinker.c:550 [inline]
 shrink_slab+0x830/0x1150 mm/shrinker.c:628
 shrink_one+0x2d9/0x710 mm/vmscan.c:4918
 shrink_many mm/vmscan.c:4979 [inline]
 lru_gen_shrink_node mm/vmscan.c:5057 [inline]
 shrink_node+0x30e2/0x39d0 mm/vmscan.c:6037
 kswapd_shrink_node mm/vmscan.c:6884 [inline]
 balance_pgdat mm/vmscan.c:7060 [inline]
 kswapd+0x13ef/0x2a40 mm/vmscan.c:7333
 kthread+0x388/0x470 kernel/kthread.c:467
 ret_from_fork+0x51e/0xb90 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:f2fs_evict_inode+0x1ad8/0x1af0 fs/f2fs/inode.c:977
Code: 00 00 00 e8 5a f9 7f fd 65 49 ff 47 08 49 bc 00 00 00 00 00 fc ff df e9 ba e7 ff ff e8 81 71 9b fd 90 0f 0b e8 79 71 9b fd 90 <0f> 0b e8 71 71 9b fd 90 0f 0b 90 e9 9a fe ff ff 0f 1f 84 00 00 00
RSP: 0000:ffffc90000b0f060 EFLAGS: 00010293
RAX: ffffffff842a2607 RBX: ffff8880119449c0 RCX: ffff888000e0a480