syzbot

BUG: stack guard page was hit at ffffc90008937fe8 (stack is ffffc90008938000..ffffc9000893ffff)
kernel stack overflow (double-fault): 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 3286 Comm: syz-executor.5 Not tainted 5.10.112-syzkaller-00287-gde64d941a71a #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/12/2022
RIP: 0010:update_stack_state+0x11b/0x580 arch/x86/kernel/unwind_frame.c:205
Code: 08 49 8d 75 10 48 89 45 c0 48 01 c1 48 89 4d a0 4d 8d 65 18 49 8d 5d 28 49 8d 45 20 48 89 85 78 ff ff ff 4c 89 f0 48 c1 e8 03 <48> 89 85 68 ff ff ff 48 89 75 80 48 c1 ee 03 48 89 b5 70 ff ff ff
RSP: 0018:ffffc90008937ff0 EFLAGS: 00010a02
RAX: 1ffff92001127025 RBX: ffffc90008938148 RCX: ffffc90008938120
RDX: dffffc0000000000 RSI: ffffc90008938130 RDI: ffffc90008938120
RBP: ffffc90008938088 R08: dffffc0000000001 R09: ffffc90008938120
R10: fffff52001127030 R11: 1ffff92001127024 R12: ffffc90008938138
R13: ffffc90008938120 R14: ffffc90008938128 R15: ffffc90008938158
FS:  00007f805c6f9700(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffc90008937fe8 CR3: 000000010f96e000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
Modules linked in:
---[ end trace 9046064ad5767fdd ]---
RIP: 0010:update_stack_state+0x11b/0x580 arch/x86/kernel/unwind_frame.c:205
Code: 08 49 8d 75 10 48 89 45 c0 48 01 c1 48 89 4d a0 4d 8d 65 18 49 8d 5d 28 49 8d 45 20 48 89 85 78 ff ff ff 4c 89 f0 48 c1 e8 03 <48> 89 85 68 ff ff ff 48 89 75 80 48 c1 ee 03 48 89 b5 70 ff ff ff
RSP: 0018:ffffc90008937ff0 EFLAGS: 00010a02
RAX: 1ffff92001127025 RBX: ffffc90008938148 RCX: ffffc90008938120
RDX: dffffc0000000000 RSI: ffffc90008938130 RDI: ffffc90008938120
RBP: ffffc90008938088 R08: dffffc0000000001 R09: ffffc90008938120
R10: fffff52001127030 R11: 1ffff92001127024 R12: ffffc90008938138
R13: ffffc90008938120 R14: ffffc90008938128 R15: ffffc90008938158
FS:  00007f805c6f9700(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffc90008937fe8 CR3: 000000010f96e000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	08 49 8d             	or     %cl,-0x73(%rcx)
   3:	75 10                	jne    0x15
   5:	48 89 45 c0          	mov    %rax,-0x40(%rbp)
   9:	48 01 c1             	add    %rax,%rcx
   c:	48 89 4d a0          	mov    %rcx,-0x60(%rbp)
  10:	4d 8d 65 18          	lea    0x18(%r13),%r12
  14:	49 8d 5d 28          	lea    0x28(%r13),%rbx
  18:	49 8d 45 20          	lea    0x20(%r13),%rax
  1c:	48 89 85 78 ff ff ff 	mov    %rax,-0x88(%rbp)
  23:	4c 89 f0             	mov    %r14,%rax
  26:	48 c1 e8 03          	shr    $0x3,%rax
* 2a:	48 89 85 68 ff ff ff 	mov    %rax,-0x98(%rbp) <-- trapping instruction
  31:	48 89 75 80          	mov    %rsi,-0x80(%rbp)
  35:	48 c1 ee 03          	shr    $0x3,%rsi
  39:	48 89 b5 70 ff ff ff 	mov    %rsi,-0x90(%rbp)