BUG: TASK stack guard page was hit at ffffc9000b937fd8 (stack is ffffc9000b938000..ffffc9000b940000)
Oops: stack guard page: 0000 [#1] PREEMPT SMP KASAN PTI
CPU: 1 UID: 0 PID: 332 Comm: syz.3.4 Not tainted syzkaller #0 a88889f1fd4bd040639a1a4060abea1bc20e1fef
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026
RIP: 0010:arch_stack_walk+0x74/0x170 arch/x86/kernel/stacktrace.c:18
Code: 00 00 48 c7 45 b0 00 00 00 00 48 c7 45 a8 00 00 00 00 48 c7 45 a0 00 00 00 00 48 c7 45 98 00 00 00 00 48 c7 45 90 00 00 00 00 <48> c7 45 88 00 00 00 00 48 c7 45 80 00 00 00 00 48 c7 85 78 ff ff
RSP: 0018:ffffc9000b937fe8 EFLAGS: 00010296
RAX: 5847ee3fb1a3bb00 RBX: ffffc9000b9380a0 RCX: 0000000000000000
RDX: ffff888130eca600 RSI: ffffc9000b9380a0 RDI: ffffffff8175cdf0
RBP: ffffc9000b938070 R08: ffffc9000b9381df R09: 0000000000000000
R10: ffffc9000b938160 R11: fffff5200172703c R12: ffff888130eca600
R13: 1ffff110261d9580 R14: ffffffff8175cdf0 R15: 0000000000000000
FS:  00007f72b09756c0(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffc9000b937fd8 CR3: 000000010c766000 CR4: 00000000003526b0
Call Trace:
 <TASK>
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:arch_stack_walk+0x74/0x170 arch/x86/kernel/stacktrace.c:18
Code: 00 00 48 c7 45 b0 00 00 00 00 48 c7 45 a8 00 00 00 00 48 c7 45 a0 00 00 00 00 48 c7 45 98 00 00 00 00 48 c7 45 90 00 00 00 00 <48> c7 45 88 00 00 00 00 48 c7 45 80 00 00 00 00 48 c7 85 78 ff ff
RSP: 0018:ffffc9000b937fe8 EFLAGS: 00010296
RAX: 5847ee3fb1a3bb00 RBX: ffffc9000b9380a0 RCX: 0000000000000000
RDX: ffff888130eca600 RSI: ffffc9000b9380a0 RDI: ffffffff8175cdf0
RBP: ffffc9000b938070 R08: ffffc9000b9381df R09: 0000000000000000
R10: ffffc9000b938160 R11: fffff5200172703c R12: ffff888130eca600
R13: 1ffff110261d9580 R14: ffffffff8175cdf0 R15: 0000000000000000
FS:  00007f72b09756c0(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffc9000b937fd8 CR3: 000000010c766000 CR4: 00000000003526b0
----------------
Code disassembly (best guess):
   0:	00 00                	add    %al,(%rax)
   2:	48 c7 45 b0 00 00 00 	movq   $0x0,-0x50(%rbp)
   9:	00
   a:	48 c7 45 a8 00 00 00 	movq   $0x0,-0x58(%rbp)
  11:	00
  12:	48 c7 45 a0 00 00 00 	movq   $0x0,-0x60(%rbp)
  19:	00
  1a:	48 c7 45 98 00 00 00 	movq   $0x0,-0x68(%rbp)
  21:	00
  22:	48 c7 45 90 00 00 00 	movq   $0x0,-0x70(%rbp)
  29:	00
* 2a:	48 c7 45 88 00 00 00 	movq   $0x0,-0x78(%rbp) <-- trapping instruction
  31:	00
  32:	48 c7 45 80 00 00 00 	movq   $0x0,-0x80(%rbp)
  39:	00
  3a:	48                   	rex.W
  3b:	c7                   	.byte 0xc7
  3c:	85 78 ff             	test   %edi,-0x1(%rax)
  3f:	ff                   	.byte 0xff