------------[ cut here ]------------
WARNING: CPU: 0 PID: 4232 at include/linux/ceph/decode.h:238 ceph_decode_banner_addr include/linux/ceph/decode.h:238 [inline]
WARNING: CPU: 0 PID: 4232 at include/linux/ceph/decode.h:238 read_partial_banner net/ceph/messenger_v1.c:642 [inline]
WARNING: CPU: 0 PID: 4232 at include/linux/ceph/decode.h:238 ceph_con_v1_try_read+0x5ae6/0x6440 net/ceph/messenger_v1.c:1225
Modules linked in:

CPU: 0 PID: 4232 Comm: kworker/0:6 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
Workqueue: ceph-msgr ceph_con_workfn
RIP: 0010:ceph_decode_banner_addr include/linux/ceph/decode.h:238 [inline]
RIP: 0010:read_partial_banner net/ceph/messenger_v1.c:642 [inline]
RIP: 0010:ceph_con_v1_try_read+0x5ae6/0x6440 net/ceph/messenger_v1.c:1225
Code: 48 c1 e8 03 42 80 3c 38 00 74 08 48 89 df e8 61 f3 30 f8 48 c7 03 80 d3 3f 8b 41 bf ff ff ff ff e9 ac 02 00 00 e8 0a d0 eb f7 <0f> 0b e9 ca f5 ff ff e8 fe cf eb f7 48 c7 c7 80 df 3f 8b 44 89 fe
RSP: 0018:ffffc9000316f240 EFLAGS: 00010293
RAX: ffffffff898d2ca6 RBX: dffffc0000000000 RCX: ffff888028b73b80
RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000002
RBP: ffffc9000316fbb8 R08: ffffc9000316f0df R09: ffffc9000316f0d0
R10: dffffc0000000000 R11: fffff5200062de1c R12: 0000000000000200
R13: fffff5200062de84 R14: 0000000000000002 R15: ffff88807d81c772
FS:  0000000000000000(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fbb53ebdff8 CR3: 000000002b679000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 ceph_con_workfn+0x201/0x1110 net/ceph/messenger.c:1530
 process_one_work+0x867/0xff0 kernel/workqueue.c:2310
 worker_thread+0xad7/0x12a0 kernel/workqueue.c:2457
 kthread+0x42e/0x520 kernel/kthread.c:334
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287
 </TASK>