------------[ cut here ]------------
kernel BUG at arch/x86/mm/physaddr.c:28!
Oops: invalid opcode: 0000 [#1] SMP KASAN PTI
CPU: 0 UID: 0 PID: 0 Comm: swapper/0 Not tainted 6.16.0-next-20250806-syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
RIP: 0010:__phys_addr+0x16b/0x180 arch/x86/mm/physaddr.c:28
Code: 95 ae 00 e9 45 ff ff ff e8 a2 2b 4b 00 48 c7 c7 50 cf fa 8d 48 89 de 4c 89 f2 e8 10 1d 8c 03 e9 4d ff ff ff e8 86 2b 4b 00 90 <0f> 0b e8 7e 2b 4b 00 90 0f 0b e8 76 2b 4b 00 90 0f 0b 0f 1f 00 90
RSP: 0018:ffffc90000007b58 EFLAGS: 00010246
RAX: ffffffff817486ea RBX: 00007780ffff0000 RCX: ffffffff8de95100
RDX: 0000000000000100 RSI: 000000017fff0000 RDI: 00007780ffff0000
RBP: ffffc90000007e30 R08: 0000000000000000 R09: ffffffff81a7f847
R10: dffffc0000000000 R11: ffffffff8a035040 R12: ffffffff8a035040
R13: ffffffff81a7f847 R14: 000000017fff0000 R15: dffffc0000000000
FS:  0000000000000000(0000) GS:ffff888125c24000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00005555642b4608 CR3: 000000000df36000 CR4: 00000000003526f0
Call Trace:
 <IRQ>
 virt_to_folio include/linux/mm.h:1180 [inline]
 kfree+0x77/0x440 mm/slub.c:4871
 in_dev_free_rcu+0x49/0x60 net/ipv4/devinet.c:245
 rcu_do_batch kernel/rcu/tree.c:2605 [inline]
 rcu_core+0xca8/0x1770 kernel/rcu/tree.c:2861
 handle_softirqs+0x283/0x870 kernel/softirq.c:579
 __do_softirq kernel/softirq.c:613 [inline]
 invoke_softirq kernel/softirq.c:453 [inline]
 __irq_exit_rcu+0xca/0x1f0 kernel/softirq.c:680
 irq_exit_rcu+0x9/0x30 kernel/softirq.c:696
 instr_sysvec_call_function_single arch/x86/kernel/smp.c:266 [inline]
 sysvec_call_function_single+0xa3/0xc0 arch/x86/kernel/smp.c:266
 </IRQ>
 <TASK>
 asm_sysvec_call_function_single+0x1a/0x20 arch/x86/include/asm/idtentry.h:709
RIP: 0010:pv_native_safe_halt+0x13/0x20 arch/x86/kernel/paravirt.c:82
Code: 53 e8 02 00 cc cc cc 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 66 90 0f 00 2d 93 66 0d 00 f3 0f 1e fa fb f4 <c3> cc cc cc cc cc cc cc cc cc cc cc cc 90 90 90 90 90 90 90 90 90
RSP: 0018:ffffffff8de07d80 EFLAGS: 000002c6
RAX: 4696e212aafe6000 RBX: ffffffff81968308 RCX: 4696e212aafe6000
RDX: 0000000000000001 RSI: ffffffff8d996519 RDI: ffffffff8be34400
RBP: ffffffff8de07eb8 R08: ffff8880b8632f9b R09: 1ffff110170c65f3
R10: dffffc0000000000 R11: ffffed10170c65f4 R12: ffffffff8fa2bc30
R13: 0000000000000000 R14: 0000000000000000 R15: 1ffffffff1bd2a20
 arch_safe_halt arch/x86/include/asm/paravirt.h:107 [inline]
 default_idle+0x13/0x20 arch/x86/kernel/process.c:757
 default_idle_call+0x74/0xb0 kernel/sched/idle.c:122
 cpuidle_idle_call kernel/sched/idle.c:190 [inline]
 do_idle+0x1e8/0x510 kernel/sched/idle.c:330
 cpu_startup_entry+0x44/0x60 kernel/sched/idle.c:428
 rest_init+0x2de/0x300 init/main.c:744
 start_kernel+0x3a9/0x410 init/main.c:1097
 x86_64_start_reservations+0x24/0x30 arch/x86/kernel/head64.c:307
 x86_64_start_kernel+0x143/0x1c0 arch/x86/kernel/head64.c:288
 common_startup_64+0x13e/0x147
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:__phys_addr+0x16b/0x180 arch/x86/mm/physaddr.c:28
Code: 95 ae 00 e9 45 ff ff ff e8 a2 2b 4b 00 48 c7 c7 50 cf fa 8d 48 89 de 4c 89 f2 e8 10 1d 8c 03 e9 4d ff ff ff e8 86 2b 4b 00 90 <0f> 0b e8 7e 2b 4b 00 90 0f 0b e8 76 2b 4b 00 90 0f 0b 0f 1f 00 90
RSP: 0018:ffffc90000007b58 EFLAGS: 00010246
RAX: ffffffff817486ea RBX: 00007780ffff0000 RCX: ffffffff8de95100
RDX: 0000000000000100 RSI: 000000017fff0000 RDI: 00007780ffff0000
RBP: ffffc90000007e30 R08: 0000000000000000 R09: ffffffff81a7f847
R10: dffffc0000000000 R11: ffffffff8a035040 R12: ffffffff8a035040
R13: ffffffff81a7f847 R14: 000000017fff0000 R15: dffffc0000000000
FS:  0000000000000000(0000) GS:ffff888125c24000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00005555642b4608 CR3: 000000000df36000 CR4: 00000000003526f0
----------------
Code disassembly (best guess):
   0:	53                   	push   %rbx
   1:	e8 02 00 cc cc       	call   0xcccc0008
   6:	cc                   	int3
   7:	90                   	nop
   8:	90                   	nop
   9:	90                   	nop
   a:	90                   	nop
   b:	90                   	nop
   c:	90                   	nop
   d:	90                   	nop
   e:	90                   	nop
   f:	90                   	nop
  10:	90                   	nop
  11:	90                   	nop
  12:	90                   	nop
  13:	90                   	nop
  14:	90                   	nop
  15:	90                   	nop
  16:	90                   	nop
  17:	f3 0f 1e fa          	endbr64
  1b:	66 90                	xchg   %ax,%ax
  1d:	0f 00 2d 93 66 0d 00 	verw   0xd6693(%rip)        # 0xd66b7
  24:	f3 0f 1e fa          	endbr64
  28:	fb                   	sti
  29:	f4                   	hlt
* 2a:	c3                   	ret <-- trapping instruction
  2b:	cc                   	int3
  2c:	cc                   	int3
  2d:	cc                   	int3
  2e:	cc                   	int3
  2f:	cc                   	int3
  30:	cc                   	int3
  31:	cc                   	int3
  32:	cc                   	int3
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	90                   	nop
  38:	90                   	nop
  39:	90                   	nop
  3a:	90                   	nop
  3b:	90                   	nop
  3c:	90                   	nop
  3d:	90                   	nop
  3e:	90                   	nop
  3f:	90                   	nop