BUG: stack guard page was hit at ffffc9000a747fb8 (stack is ffffc9000a748000..ffffc9000a74ffff) kernel stack overflow (double-fault): 0000 [#1] PREEMPT SMP KASAN CPU: 1 PID: 12694 Comm: syz-executor.3 Not tainted 5.10.110-syzkaller-01300-ge08dd85cc95e #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:update_stack_state+0xa0/0x580 arch/x86/kernel/unwind_frame.c:198 Code: 4d 8d 7d 38 4c 89 f8 48 c1 e8 03 80 3c 10 00 74 12 4c 89 ff e8 91 41 73 00 48 ba 00 00 00 00 00 fc ff df 49 8b 07 48 83 c0 10 <48> 89 45 88 44 89 f3 83 e3 01 48 f7 db 4c 21 f3 48 83 e3 fe 4c 89 RSP: 0018:ffffc9000a747fc0 EFLAGS: 00010282 RAX: ffffc9000a748180 RBX: ffffc9000a748170 RCX: 1ffff920014e9037 RDX: dffffc0000000000 RSI: ffffc9000a748210 RDI: ffffc9000a748180 RBP: ffffc9000a748058 R08: dffffc0000000001 R09: ffffc9000a748180 R10: fffff520014e903c R11: 1ffff920014e9030 R12: ffffc9000a7481d8 R13: ffffc9000a748180 R14: ffffc9000a748210 R15: ffffc9000a7481b8 FS: 00007fc62f4d3700(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffc9000a747fb8 CR3: 0000000113d56000 CR4: 00000000003506a0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: Modules linked in: ---[ end trace c521912fff17694f ]--- RIP: 0010:update_stack_state+0xa0/0x580 arch/x86/kernel/unwind_frame.c:198 Code: 4d 8d 7d 38 4c 89 f8 48 c1 e8 03 80 3c 10 00 74 12 4c 89 ff e8 91 41 73 00 48 ba 00 00 00 00 00 fc ff df 49 8b 07 48 83 c0 10 <48> 89 45 88 44 89 f3 83 e3 01 48 f7 db 4c 21 f3 48 83 e3 fe 4c 89 RSP: 0018:ffffc9000a747fc0 EFLAGS: 00010282 RAX: ffffc9000a748180 RBX: ffffc9000a748170 RCX: 1ffff920014e9037 RDX: dffffc0000000000 RSI: ffffc9000a748210 RDI: ffffc9000a748180 RBP: ffffc9000a748058 R08: dffffc0000000001 R09: ffffc9000a748180 R10: fffff520014e903c R11: 1ffff920014e9030 R12: ffffc9000a7481d8 R13: ffffc9000a748180 R14: ffffc9000a748210 R15: ffffc9000a7481b8 FS: 00007fc62f4d3700(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffc9000a747fb8 CR3: 0000000113d56000 CR4: 00000000003506a0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 4d 8d 7d 38 lea 0x38(%r13),%r15 4: 4c 89 f8 mov %r15,%rax 7: 48 c1 e8 03 shr $0x3,%rax b: 80 3c 10 00 cmpb $0x0,(%rax,%rdx,1) f: 74 12 je 0x23 11: 4c 89 ff mov %r15,%rdi 14: e8 91 41 73 00 callq 0x7341aa 19: 48 ba 00 00 00 00 00 movabs $0xdffffc0000000000,%rdx 20: fc ff df 23: 49 8b 07 mov (%r15),%rax 26: 48 83 c0 10 add $0x10,%rax * 2a: 48 89 45 88 mov %rax,-0x78(%rbp) <-- trapping instruction 2e: 44 89 f3 mov %r14d,%ebx 31: 83 e3 01 and $0x1,%ebx 34: 48 f7 db neg %rbx 37: 4c 21 f3 and %r14,%rbx 3a: 48 83 e3 fe and $0xfffffffffffffffe,%rbx 3e: 4c rex.WR 3f: 89 .byte 0x89