Oops: general protection fault, probably for non-canonical address 0xdffffc001fffffff: 0000 [#1] SMP KASAN NOPTI
KASAN: probably user-memory-access in range [0x00000000fffffff8-0x00000000ffffffff]
CPU: 0 UID: 0 PID: 3934 Comm: syz-executor.6 Tainted: G        W           6.17.0-rc4-next-20250901 #1 PREEMPT(voluntary) 
Tainted: [W]=WARN
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014
RIP: 0010:dst_dev_put+0x21/0x250
Code: 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 41 54 55 53 48 89 fb e8 f0 9a a8 fd 48 89 da 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 <80> 3c 02 00 0f 85 b5 01 00 00 48 8d 7b 3a 48 8b 2b 48 b8 00 00 00
RSP: 0018:ffff88806ce08d78 EFLAGS: 00010217
RAX: dffffc0000000000 RBX: 00000000ffffffff RCX: ffffffff841077c1
RDX: 000000001fffffff RSI: ffffffff83cb5bc0 RDI: 00000000ffffffff
RBP: dffffc0000000000 R08: 0000000000000000 R09: fffffbfff0c8768a
R10: 0000000000000001 R11: 0000000000000001 R12: fffffbfff0b0a4ac
R13: 0000607f1a63ec10 R14: 0000607f1a63ec10 R15: 0000000000000001
FS:  0000000000000000(0000) GS:ffff8880e55d8000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2d52a000 CR3: 000000004290b000 CR4: 0000000000350ef0
Call Trace:
 <IRQ>
 rt_fibinfo_free_cpus.part.0+0xdb/0x1a0
 fib_nh_common_release+0xa8/0x2c0
 free_fib_info_rcu+0x1cd/0x430
 rcu_core+0x7c8/0x1800
 handle_softirqs+0x1b1/0x770
 __irq_exit_rcu+0xc4/0x100
 irq_exit_rcu+0x9/0x20
 sysvec_apic_timer_interrupt+0x70/0x80
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:unmap_page_range+0xc2c/0x36d0
Code: 8b 38 48 c1 e8 03 80 3c 08 00 0f 85 12 25 00 00 48 8b 04 24 48 c7 00 00 00 00 00 49 bc 40 00 00 00 00 00 00 04 e8 64 f2 d6 ff <4d> 21 fc 31 ff 4c 89 e6 e8 b7 ed d6 ff 4d 85 e4 0f 85 25 12 00 00
RSP: 0018:ffff88801bb27880 EFLAGS: 00000293
RAX: 0000000000000000 RBX: ffffea0000ff14c0 RCX: dffffc0000000000
RDX: ffff888045ced280 RSI: ffffffff819d044c RDI: 0000000000000001
RBP: 0000000000000000 R08: 0000000000000000 R09: fffff940001fe298
R10: 0000000000000001 R11: 0000000000000001 R12: 0400000000000040
R13: 00007fd61e196000 R14: ffff88801bb27ce0 R15: 800000003fc53007
 unmap_single_vma.constprop.0+0x153/0x230
 unmap_vmas+0x1d6/0x430
 exit_mmap+0x181/0xaa0
 mmput+0xd5/0x390
 do_exit+0x79d/0x2970
 do_group_exit+0xd3/0x2a0
 __x64_sys_exit_group+0x3e/0x50
 x64_sys_call+0x18c5/0x18d0
 do_syscall_64+0xbf/0x360
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fd61fd3cb19
Code: Unable to access opcode bytes at 0x7fd61fd3caef.
RSP: 002b:00007ffdea240da8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 000000000000001e RCX: 00007fd61fd3cb19
RDX: 00007fd61fcef72b RSI: ffffffffffffffbc RDI: 0000000000000000
RBP: 0000000000000000 R08: 0000001b2d226dc0 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
R13: 0000000000000000 R14: 0000000000000001 R15: 00007ffdea240e90
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:dst_dev_put+0x21/0x250
Code: 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 41 54 55 53 48 89 fb e8 f0 9a a8 fd 48 89 da 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 <80> 3c 02 00 0f 85 b5 01 00 00 48 8d 7b 3a 48 8b 2b 48 b8 00 00 00
RSP: 0018:ffff88806ce08d78 EFLAGS: 00010217
RAX: dffffc0000000000 RBX: 00000000ffffffff RCX: ffffffff841077c1
RDX: 000000001fffffff RSI: ffffffff83cb5bc0 RDI: 00000000ffffffff
RBP: dffffc0000000000 R08: 0000000000000000 R09: fffffbfff0c8768a
R10: 0000000000000001 R11: 0000000000000001 R12: fffffbfff0b0a4ac
R13: 0000607f1a63ec10 R14: 0000607f1a63ec10 R15: 0000000000000001
FS:  0000000000000000(0000) GS:ffff8880e55d8000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2d52a000 CR3: 000000004290b000 CR4: 0000000000350ef0
----------------
Code disassembly (best guess):
   0:	90                   	nop
   1:	90                   	nop
   2:	90                   	nop
   3:	90                   	nop
   4:	90                   	nop
   5:	90                   	nop
   6:	90                   	nop
   7:	90                   	nop
   8:	90                   	nop
   9:	f3 0f 1e fa          	endbr64
   d:	41 54                	push   %r12
   f:	55                   	push   %rbp
  10:	53                   	push   %rbx
  11:	48 89 fb             	mov    %rdi,%rbx
  14:	e8 f0 9a a8 fd       	callq  0xfda89b09
  19:	48 89 da             	mov    %rbx,%rdx
  1c:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  23:	fc ff df
  26:	48 c1 ea 03          	shr    $0x3,%rdx
* 2a:	80 3c 02 00          	cmpb   $0x0,(%rdx,%rax,1) <-- trapping instruction
  2e:	0f 85 b5 01 00 00    	jne    0x1e9
  34:	48 8d 7b 3a          	lea    0x3a(%rbx),%rdi
  38:	48 8b 2b             	mov    (%rbx),%rbp
  3b:	48                   	rex.W
  3c:	b8                   	.byte 0xb8
  3d:	00 00                	add    %al,(%rax)