------------[ cut here ]------------
kernel BUG at net/sunrpc/svc.c:599!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 4384 Comm: syz.0.18 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/15/2026
RIP: 0010:svc_destroy+0x184/0x190 net/sunrpc/svc.c:599
Code: 5f 5d e9 8f 26 bb f8 44 89 f9 80 e1 07 80 c1 03 38 c1 0f 8c 24 ff ff ff 4c 89 ff e8 f6 ba bb f8 e9 17 ff ff ff e8 cc 72 76 f8 <0f> 0b e8 c5 72 76 f8 0f 0b 0f 1f 00 55 41 57 41 56 41 55 41 54 53
RSP: 0018:ffffc9000321fad0 EFLAGS: 00010293
RAX: ffffffff8902bac4 RBX: ffff88807a7be050 RCX: ffff88807c239dc0
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc9000321fc78 R08: ffffffff91047207 R09: 1ffffffff2208e40
R10: dffffc0000000000 R11: fffffbfff2208e41 R12: dffffc0000000000
R13: dffffc0000000000 R14: ffff88807a7be068 R15: 0000000000000001
FS:  000055556a56c500(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00003841d791b000 CR3: 0000000073aae000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 kref_put include/linux/kref.h:65 [inline]
 svc_put include/linux/sunrpc/svc.h:123 [inline]
 __write_ports_addxprt fs/nfsd/nfsctl.c:770 [inline]
 __write_ports fs/nfsd/nfsctl.c:796 [inline]
 write_ports+0xa26/0xb80 fs/nfsd/nfsctl.c:849
 nfsctl_transaction_write+0x105/0x150 fs/nfsd/nfsctl.c:114
 vfs_write+0x304/0xd70 fs/read_write.c:592
 ksys_write+0x153/0x260 fs/read_write.c:647
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f799f3a0b19
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fffd3070a18 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f799f626fa0 RCX: 00007f799f3a0b19
RDX: 0000000000000005 RSI: 0000200000000940 RDI: 0000000000000003
RBP: 00007f799f438b70 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f799f626fac R14: 00007f799f626fa0 R15: 00007f799f626fa0
 </TASK>
Modules linked in:
---[ end trace 220bd24a3ecc522d ]---
RIP: 0010:svc_destroy+0x184/0x190 net/sunrpc/svc.c:599
Code: 5f 5d e9 8f 26 bb f8 44 89 f9 80 e1 07 80 c1 03 38 c1 0f 8c 24 ff ff ff 4c 89 ff e8 f6 ba bb f8 e9 17 ff ff ff e8 cc 72 76 f8 <0f> 0b e8 c5 72 76 f8 0f 0b 0f 1f 00 55 41 57 41 56 41 55 41 54 53
RSP: 0018:ffffc9000321fad0 EFLAGS: 00010293
RAX: ffffffff8902bac4 RBX: ffff88807a7be050 RCX: ffff88807c239dc0
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc9000321fc78 R08: ffffffff91047207 R09: 1ffffffff2208e40
R10: dffffc0000000000 R11: fffffbfff2208e41 R12: dffffc0000000000
R13: dffffc0000000000 R14: ffff88807a7be068 R15: 0000000000000001
FS:  000055556a56c500(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00003841d791b000 CR3: 0000000073aae000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400