Oops: general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] PREEMPT SMP KASAN PTI
KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007]
CPU: 0 UID: 0 PID: 5422 Comm: syz.4.27 Not tainted 6.11.0-rc4-next-20240821-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
RIP: 0010:vsnprintf+0xd89/0x1da0 lib/vsprintf.c:2828
Code: f0 48 c1 e8 03 42 80 3c 28 00 74 08 4c 89 f7 e8 5d 9e 45 f6 49 8b 1e 48 8d 43 08 49 89 06 4c 8b 7c 24 18 48 89 d8 48 c1 e8 03 <42> 80 3c 28 00 74 08 48 89 df e8 38 9e 45 f6 48 8b 0b 4c 89 e7 48
RSP: 0018:ffffc900047170c0 EFLAGS: 00010046
RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffff888062230000
RDX: ffffc90004717370 RSI: 0000000000000000 RDI: 0000000000000029
RBP: ffffc900047171b0 R08: ffffffff8bb6a093 R09: ffffffff8bb69bc4
R10: 0000000000000012 R11: ffff888062230000 R12: ffffffff8c086353
R13: dffffc0000000000 R14: ffff0a00ffffff05 R15: ffffc90004717358
FS:  00005555613bd500(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 000000001fb9c000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 vprintk_store+0x480/0x1160 kernel/printk/printk.c:2228
 vprintk_emit+0x1e0/0x7c0 kernel/printk/printk.c:2329
 _printk+0xd5/0x120 kernel/printk/printk.c:2373
 page_fault_oops+0x540/0xcc0 arch/x86/mm/fault.c:705
 handle_page_fault arch/x86/mm/fault.c:1481 [inline]
 exc_page_fault+0x5ed/0x8c0 arch/x86/mm/fault.c:1539
 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:623
RIP: 0010:0x0
Code: Unable to access opcode bytes at 0xffffffffffffffd6.
RSP: 0018:ffffc900047178d8 EFLAGS: 00010096
RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffff888062230000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000002
RBP: 0000000000000000 R08: ffffffff8142362b R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: ffff888062230000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000010
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:vsnprintf+0xd89/0x1da0 lib/vsprintf.c:2828
Code: f0 48 c1 e8 03 42 80 3c 28 00 74 08 4c 89 f7 e8 5d 9e 45 f6 49 8b 1e 48 8d 43 08 49 89 06 4c 8b 7c 24 18 48 89 d8 48 c1 e8 03 <42> 80 3c 28 00 74 08 48 89 df e8 38 9e 45 f6 48 8b 0b 4c 89 e7 48
RSP: 0018:ffffc900047170c0 EFLAGS: 00010046
RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffff888062230000
RDX: ffffc90004717370 RSI: 0000000000000000 RDI: 0000000000000029
RBP: ffffc900047171b0 R08: ffffffff8bb6a093 R09: ffffffff8bb69bc4
R10: 0000000000000012 R11: ffff888062230000 R12: ffffffff8c086353
R13: dffffc0000000000 R14: ffff0a00ffffff05 R15: ffffc90004717358
FS:  00005555613bd500(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffffffffffffd6 CR3: 000000001fb9c000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	f0 48 c1 e8 03       	lock shr $0x3,%rax
   5:	42 80 3c 28 00       	cmpb   $0x0,(%rax,%r13,1)
   a:	74 08                	je     0x14
   c:	4c 89 f7             	mov    %r14,%rdi
   f:	e8 5d 9e 45 f6       	call   0xf6459e71
  14:	49 8b 1e             	mov    (%r14),%rbx
  17:	48 8d 43 08          	lea    0x8(%rbx),%rax
  1b:	49 89 06             	mov    %rax,(%r14)
  1e:	4c 8b 7c 24 18       	mov    0x18(%rsp),%r15
  23:	48 89 d8             	mov    %rbx,%rax
  26:	48 c1 e8 03          	shr    $0x3,%rax
* 2a:	42 80 3c 28 00       	cmpb   $0x0,(%rax,%r13,1) <-- trapping instruction
  2f:	74 08                	je     0x39
  31:	48 89 df             	mov    %rbx,%rdi
  34:	e8 38 9e 45 f6       	call   0xf6459e71
  39:	48 8b 0b             	mov    (%rbx),%rcx
  3c:	4c 89 e7             	mov    %r12,%rdi
  3f:	48                   	rex.W