BUG: stack guard page was hit at ffffc90007417fb8 (stack is ffffc90007418000..ffffc9000741ffff) kernel stack overflow (double-fault): 0000 [#1] PREEMPT SMP KASAN CPU: 0 PID: 3791 Comm: syz-executor.4 Tainted: G W 5.10.109-syzkaller-00693-g414e6c8e941c #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:pvclock_clocksource_read+0x4f/0x630 arch/x86/kernel/pvclock.c:68 Code: 18 48 8d 77 1c 4c 8d 57 10 48 83 c7 1d 4d 8d 5d 03 4c 89 ea 48 c1 ea 03 4c 89 d9 48 c1 e9 03 49 8d 58 07 4c 89 c0 48 c1 e8 03 <48> 89 85 68 ff ff ff 48 89 d8 48 89 5d 88 48 c1 eb 03 48 89 9d 70 RSP: 0018:ffffc90007417fc8 EFLAGS: 00010802 RAX: 1ffffffff0d85801 RBX: ffffffff86c2c00f RCX: 1ffffffff0d85800 RDX: 1ffffffff0d85800 RSI: ffffffff86c2c01c RDI: ffffffff86c2c01d RBP: ffffc90007418068 R08: ffffffff86c2c008 R09: ffffffff86c2c018 R10: ffffffff86c2c010 R11: ffffffff86c2c003 R12: dffffc0000000000 R13: ffffffff86c2c000 R14: ffff888151e42780 R15: dffffc0000000000 FS: 00007f46d807f700(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffc90007417fb8 CR3: 000000011b11b000 CR4: 00000000003506b0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: Modules linked in: ---[ end trace dda90dc4c474b3f7 ]--- RIP: 0010:pvclock_clocksource_read+0x4f/0x630 arch/x86/kernel/pvclock.c:68 Code: 18 48 8d 77 1c 4c 8d 57 10 48 83 c7 1d 4d 8d 5d 03 4c 89 ea 48 c1 ea 03 4c 89 d9 48 c1 e9 03 49 8d 58 07 4c 89 c0 48 c1 e8 03 <48> 89 85 68 ff ff ff 48 89 d8 48 89 5d 88 48 c1 eb 03 48 89 9d 70 RSP: 0018:ffffc90007417fc8 EFLAGS: 00010802 RAX: 1ffffffff0d85801 RBX: ffffffff86c2c00f RCX: 1ffffffff0d85800 RDX: 1ffffffff0d85800 RSI: ffffffff86c2c01c RDI: ffffffff86c2c01d RBP: ffffc90007418068 R08: ffffffff86c2c008 R09: ffffffff86c2c018 R10: ffffffff86c2c010 R11: ffffffff86c2c003 R12: dffffc0000000000 R13: ffffffff86c2c000 R14: ffff888151e42780 R15: dffffc0000000000 FS: 00007f46d807f700(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffc90007417fb8 CR3: 000000011b11b000 CR4: 00000000003506b0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 18 48 8d sbb %cl,-0x73(%rax) 3: 77 1c ja 0x21 5: 4c 8d 57 10 lea 0x10(%rdi),%r10 9: 48 83 c7 1d add $0x1d,%rdi d: 4d 8d 5d 03 lea 0x3(%r13),%r11 11: 4c 89 ea mov %r13,%rdx 14: 48 c1 ea 03 shr $0x3,%rdx 18: 4c 89 d9 mov %r11,%rcx 1b: 48 c1 e9 03 shr $0x3,%rcx 1f: 49 8d 58 07 lea 0x7(%r8),%rbx 23: 4c 89 c0 mov %r8,%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 d8 mov %rbx,%rax 34: 48 89 5d 88 mov %rbx,-0x78(%rbp) 38: 48 c1 eb 03 shr $0x3,%rbx 3c: 48 rex.W 3d: 89 .byte 0x89 3e: 9d popfq 3f: 70 .byte 0x70