syzbot

WARNING: CPU: 0 PID: 101 at fs/ext4/inode.c:5179 ext4_write_inode+0x471/0x540 fs/ext4/inode.c:5179
Modules linked in:
CPU: 0 PID: 101 Comm: kswapd0 Not tainted 6.7.0-rc1-syzkaller #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
RIP: 0010:ext4_write_inode+0x471/0x540 fs/ext4/inode.c:5179
Code: 55 57 51 ff 4c 8b 64 24 20 4d 85 e4 74 0d e8 46 57 51 ff 4c 89 e7 e8 8e 77 c8 ff e8 39 57 51 ff e9 f3 fd ff ff e8 2f 57 51 ff <0f> 0b e9 e5 fd ff ff e8 93 48 a8 ff e9 1c fc ff ff e8 89 48 a8 ff
RSP: 0018:ffffc90000ddf120 EFLAGS: 00010293
RAX: 0000000000000000 RBX: 1ffff920001bbe24 RCX: ffffffff823749f0
RDX: ffff8880177ea400 RSI: ffffffff82374db1 RDI: 0000000000000005
RBP: 0000000000000800 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000800 R11: 0000000000000201 R12: ffff888026dcdcb0
R13: ffffc90000ddf2e8 R14: dffffc0000000000 R15: ffff888026dcdcd8
FS:  0000000000000000(0000) GS:ffff88802c600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000031c2c000 CR3: 000000000cd77000 CR4: 0000000000350ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 write_inode fs/fs-writeback.c:1473 [inline]
 __writeback_single_inode+0xa81/0xe70 fs/fs-writeback.c:1690
 writeback_single_inode+0x2af/0x590 fs/fs-writeback.c:1746
 write_inode_now+0x16e/0x1e0 fs/fs-writeback.c:2788
 iput_final fs/inode.c:1762 [inline]
 iput.part.0+0x45a/0x7a0 fs/inode.c:1801
 iput+0x5c/0x80 fs/inode.c:1791
 dentry_unlink_inode+0x292/0x430 fs/dcache.c:401
 __dentry_kill+0x3b8/0x640 fs/dcache.c:607
 dentry_kill fs/dcache.c:745 [inline]
 dput+0x6de/0xf80 fs/dcache.c:913
 ovl_destroy_inode+0x3e/0x190 fs/overlayfs/super.c:189
 destroy_inode+0xc4/0x1b0 fs/inode.c:309
 iput_final fs/inode.c:1775 [inline]
 iput.part.0+0x55e/0x7a0 fs/inode.c:1801
 iput+0x5c/0x80 fs/inode.c:1791
 dentry_unlink_inode+0x292/0x430 fs/dcache.c:401
 __dentry_kill+0x3b8/0x640 fs/dcache.c:607
 shrink_dentry_list+0x22b/0x7d0 fs/dcache.c:1201
 prune_dcache_sb+0xeb/0x150 fs/dcache.c:1282
 super_cache_scan+0x327/0x540 fs/super.c:228
 do_shrink_slab+0x428/0x1120 mm/shrinker.c:435
 shrink_slab_memcg mm/shrinker.c:548 [inline]
 shrink_slab+0xa83/0x1310 mm/shrinker.c:626
 shrink_one+0x4f7/0x700 mm/vmscan.c:4724
 shrink_many mm/vmscan.c:4776 [inline]
 lru_gen_shrink_node mm/vmscan.c:4893 [inline]
 shrink_node+0x20cd/0x3790 mm/vmscan.c:5833
 kswapd_shrink_node mm/vmscan.c:6638 [inline]
 balance_pgdat+0xa32/0x1b80 mm/vmscan.c:6828
 kswapd+0x5be/0xbf0 mm/vmscan.c:7088
 kthread+0x33c/0x440 kernel/kthread.c:388
 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:242
 </TASK>