Kernel panic - not syncing: kernel: panic_on_warn set ...
CPU: 0 PID: 7861 Comm: syz.7.473 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
Call Trace:
 <TASK>
 dump_stack_lvl+0x18c/0x250 lib/dump_stack.c:106
 panic+0x2ca/0x720 kernel/panic.c:340
 check_panic_on_warn kernel/panic.c:236 [inline]
 __warn+0x2e0/0x470 kernel/panic.c:681
 __report_bug lib/bug.c:199 [inline]
 report_bug+0x2be/0x4f0 lib/bug.c:219
 handle_bug+0xcf/0x120 arch/x86/kernel/traps.c:310
 exc_invalid_op+0x1a/0x50 arch/x86/kernel/traps.c:345
 asm_exc_invalid_op+0x1a/0x20 arch/x86/include/asm/idtentry.h:606
RIP: 0010:svc_destroy+0x2ed/0x390 net/sunrpc/svc.c:582
Code: 24 49 83 c7 20 4c 89 f8 48 c1 e8 03 42 80 3c 28 00 74 08 4c 89 ff e8 62 a7 35 f8 49 8b 37 48 c7 c7 a0 20 d9 8b e8 93 f2 a6 f7 <0f> 0b e9 78 fd ff ff e8 d7 24 dd f7 c6 05 f6 b7 cc 04 01 4c 89 e0
RSP: 0018:ffffc90003897ae0 EFLAGS: 00010246
RAX: 252a9eb1b8322700 RBX: ffff88802d1efc50 RCX: 0000000000080000
RDX: ffffc9001225e000 RSI: 000000000002cba6 RDI: 000000000002cba7
RBP: ffffc90003897cb8 R08: ffff8880b8e28c53 R09: 1ffff110171c518a
R10: dffffc0000000000 R11: ffffed10171c518b R12: ffff88802d1efc00
R13: dffffc0000000000 R14: ffff88802d1efc50 R15: ffffffff8d3e18e0
 kref_put include/linux/kref.h:65 [inline]
 svc_put include/linux/sunrpc/svc.h:124 [inline]
 __write_ports_addxprt fs/nfsd/nfsctl.c:765 [inline]
 __write_ports fs/nfsd/nfsctl.c:791 [inline]
 write_ports+0xb99/0xfa0 fs/nfsd/nfsctl.c:844
 nfsctl_transaction_write+0x10c/0x150 fs/nfsd/nfsctl.c:113
 vfs_write+0x299/0x9a0 fs/read_write.c:582
 ksys_write+0x151/0x260 fs/read_write.c:637
 do_syscall_x64 arch/x86/entry/common.c:46 [inline]
 do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:76
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f7f86b9e019
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:00007f7f87a18028 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f7f86e25fa0 RCX: 00007f7f86b9e019
RDX: 0000000000000005 RSI: 00002000000000c0 RDI: 0000000000000003
RBP: 00007f7f86c3500c R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f7f86e26038 R14: 00007f7f86e25fa0 R15: 00007fff13e35718
 </TASK>
Kernel Offset: disabled
Rebooting in 86400 seconds..