IPVS: ftp: loaded support on port[0] = 21
loop0: detected capacity change from 0 to 4092
hfs: unable to locate alternate MDB
hfs: continuing without an alternate MDB
------------[ cut here ]------------
kernel BUG at fs/hfs/inode.c:442!
invalid opcode: 0000 [#1] SMP KASAN
CPU: 0 PID: 951 Comm: kworker/u4:4 Not tainted 5.12.0-rc5-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: writeback wb_workfn (flush-7:0)
RIP: 0010:hfs_write_inode+0x54c/0x9c0 fs/hfs/inode.c:442
Code: 30 fe 87 4c 89 ff e8 a3 b8 4f ff 49 83 ff 03 0f 84 9b 00 00 00 49 83 ff 04 74 11 49 83 ff 02 0f 84 a0 fb ff ff e8 84 bc 4f ff <0f> 0b e8 7d bc 4f ff 49 8d 7c 24 28 48 b8 00 00 00 00 00 fc ff df
RSP: 0018:ffff8881028cf6d0 EFLAGS: 00010293
RAX: 0000000000000000 RBX: 1ffff11020519edf RCX: 0000000000000000
RDX: ffff888102b36180 RSI: ffffffff8227c10c RDI: 0000000000000003
RBP: ffff8881028cf860 R08: ffffffff87fe3000 R09: ffffffff8227c0ed
R10: 0000000000000003 R11: 0000000000000000 R12: ffff88811028e798
R13: 0000000000000000 R14: ffff8881028cf838 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff8881f6600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055becb16877b CR3: 000000010f205000 CR4: 0000000000350ef0
Call Trace:
loop2: detected capacity change from 0 to 4092
hfs: unable to locate alternate MDB
hfs: continuing without an alternate MDB
 write_inode fs/fs-writeback.c:1320 [inline]
 __writeback_single_inode+0x956/0xd20 fs/fs-writeback.c:1525
 writeback_sb_inodes+0x5a1/0xfb0 fs/fs-writeback.c:1732
 wb_writeback+0x2ac/0xb50 fs/fs-writeback.c:1905
loop4: detected capacity change from 0 to 4092
 wb_do_writeback fs/fs-writeback.c:2050 [inline]
 wb_workfn+0x306/0x1260 fs/fs-writeback.c:2091
loop1: detected capacity change from 0 to 4092
loop5: detected capacity change from 0 to 4092
hfs: unable to locate alternate MDB
 process_one_work+0x9e1/0x15f0 kernel/workqueue.c:2275
hfs: continuing without an alternate MDB
 worker_thread+0x65f/0x1170 kernel/workqueue.c:2421
hfs: unable to locate alternate MDB
 kthread+0x39d/0x490 kernel/kthread.c:292
hfs: continuing without an alternate MDB
 ret_from_fork+0x22/0x30 arch/x86/entry/entry_64.S:294
Modules linked in:
hfs: unable to locate alternate MDB
---[ end trace cd88a29f5fb4097c ]---
RIP: 0010:hfs_write_inode+0x54c/0x9c0 fs/hfs/inode.c:442
hfs: continuing without an alternate MDB
loop3: detected capacity change from 0 to 4092
Code: 30 fe 87 4c 89 ff e8 a3 b8 4f ff 49 83 ff 03 0f 84 9b 00 00 00 49 83 ff 04 74 11 49 83 ff 02 0f 84 a0 fb ff ff e8 84 bc 4f ff <0f> 0b e8 7d bc 4f ff 49 8d 7c 24 28 48 b8 00 00 00 00 00 fc ff df
RSP: 0018:ffff8881028cf6d0 EFLAGS: 00010293
RAX: 0000000000000000 RBX: 1ffff11020519edf RCX: 0000000000000000
RDX: ffff888102b36180 RSI: ffffffff8227c10c RDI: 0000000000000003
hfs: unable to locate alternate MDB
RBP: ffff8881028cf860 R08: ffffffff87fe3000 R09: ffffffff8227c0ed
R10: 0000000000000003 R11: 0000000000000000 R12: ffff88811028e798
hfs: continuing without an alternate MDB
R13: 0000000000000000 R14: ffff8881028cf838 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff8881f6600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055becb16877b CR3: 000000010f205000 CR4: 0000000000350ef0