NFSD: attempt to initialize legacy client tracking in a container ignored.
NFSD: Unable to initialize client recovery tracking! (-22)
NFSD: starting 90-second grace period (net f00004bf)
------------[ cut here ]------------
kernel BUG at net/sunrpc/svc.c:572!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 4306 Comm: syz.0.13 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
RIP: 0010:svc_destroy+0x184/0x190 net/sunrpc/svc.c:572
Code: 5f 5d e9 ef ae c3 f8 44 89 f9 80 e1 07 80 c1 03 38 c1 0f 8c 24 ff ff ff 4c 89 ff e8 56 43 c4 f8 e9 17 ff ff ff e8 9c 20 7f f8 <0f> 0b e8 95 20 7f f8 0f 0b 0f 1f 00 55 41 57 41 56 41 55 41 54 53
RSP: 0018:ffffc900031efaa0 EFLAGS: 00010287
RAX: ffffffff88f9dc14 RBX: ffff88802b35a050 RCX: 0000000000080000
RDX: ffffc90004031000 RSI: 00000000000692ef RDI: 00000000000692f0
RBP: 0000000000000001 R08: ffffffff901ee1d7 R09: 1ffffffff203dc3a
R10: dffffc0000000000 R11: fffffbfff203dc3b R12: dffffc0000000000
R13: ffff8880637b0000 R14: ffff88802b35a068 R15: ffff88802ba61a80
FS:  00007fa9798a06c0(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fe8f16beff8 CR3: 0000000072863000 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]
 nfsd_svc+0x7cf/0x9e0 fs/nfsd/nfssvc.c:821
 write_threads+0x2ea/0x350 fs/nfsd/nfsctl.c:426
 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: 0033:0x7fa97b648019
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:00007fa9798a0028 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007fa97b8cffa0 RCX: 00007fa97b648019
RDX: 0000000000000002 RSI: 0000200000000700 RDI: 0000000000000004
RBP: 00007fa97b6df00c R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fa97b8d0038 R14: 00007fa97b8cffa0 R15: 00007ffcd0445f98
 </TASK>
Modules linked in:
---[ end trace 4e2615f0fe577ea4 ]---
RIP: 0010:svc_destroy+0x184/0x190 net/sunrpc/svc.c:572
Code: 5f 5d e9 ef ae c3 f8 44 89 f9 80 e1 07 80 c1 03 38 c1 0f 8c 24 ff ff ff 4c 89 ff e8 56 43 c4 f8 e9 17 ff ff ff e8 9c 20 7f f8 <0f> 0b e8 95 20 7f f8 0f 0b 0f 1f 00 55 41 57 41 56 41 55 41 54 53
RSP: 0018:ffffc900031efaa0 EFLAGS: 00010287
RAX: ffffffff88f9dc14 RBX: ffff88802b35a050 RCX: 0000000000080000
RDX: ffffc90004031000 RSI: 00000000000692ef RDI: 00000000000692f0
RBP: 0000000000000001 R08: ffffffff901ee1d7 R09: 1ffffffff203dc3a
R10: dffffc0000000000 R11: fffffbfff203dc3b R12: dffffc0000000000
R13: ffff8880637b0000 R14: ffff88802b35a068 R15: ffff88802ba61a80
FS:  00007fa9798a06c0(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055c28811b190 CR3: 0000000072863000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400