BUG: stack guard page was hit at ffffc90000c0ffd8 (stack is ffffc90000c10000..ffffc90000c17fff) kernel stack overflow (double-fault): 0000 [#1] PREEMPT SMP KASAN CPU: 1 PID: 378 Comm: syz-executor156 Not tainted 5.10.102-syzkaller-00171-ge1b86e7f5cbb #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:arch_stack_walk+0x6a/0x140 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:ffffc90000c0ffe0 EFLAGS: 00010282 RAX: 11b8775d7cc49700 RBX: 1ffff9200018201a RCX: 0000000000000000 RDX: ffff8881067d93c0 RSI: ffffc90000c100c0 RDI: ffffffff815bee70 RBP: ffffc90000c10070 R08: dffffc0000000000 R09: ffffc90000c100c0 R10: fffff5200018201b R11: 0000000000000000 R12: ffff8881067d93c0 R13: ffffffff815bee70 R14: ffffc90000c100c0 R15: 0000000000000000 FS: 00007f9ddbaed700(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffc90000c0ffd8 CR3: 000000011d382000 CR4: 00000000003506a0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: Modules linked in: ---[ end trace 1d3e9d042063b74a ]--- RIP: 0010:arch_stack_walk+0x6a/0x140 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:ffffc90000c0ffe0 EFLAGS: 00010282 RAX: 11b8775d7cc49700 RBX: 1ffff9200018201a RCX: 0000000000000000 RDX: ffff8881067d93c0 RSI: ffffc90000c100c0 RDI: ffffffff815bee70 RBP: ffffc90000c10070 R08: dffffc0000000000 R09: ffffc90000c100c0 R10: fffff5200018201b R11: 0000000000000000 R12: ffff8881067d93c0 R13: ffffffff815bee70 R14: ffffc90000c100c0 R15: 0000000000000000 FS: 00007f9ddbaed700(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffc90000c0ffd8 CR3: 000000011d382000 CR4: 00000000003506a0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- 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