general protection fault, probably for non-canonical address 0x1ffffffff135a814: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 6794 Comm: syz-executor686 Not tainted 5.8.0-rc3-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:pvclock_gtod_notify+0x0/0x4d0 arch/x86/kvm/x86.c:7400
Code: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 <00> 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
RSP: 0018:ffffc90000007bf8 EFLAGS: 00010046
RAX: 1ffffffff135a814 RBX: 00000000ffffffff RCX: ffffffff814e18bb
RDX: ffffffff8c90f9c0 RSI: 0000000000000000 RDI: ffffffff89ad40a0
RBP: dffffc0000000000 R08: 0000000000000000 R09: ffffffff8c58fa27
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: ffffffff89ad40a0
FS:  0000000000000000(0000) GS:ffff8880ae600000(0063) knlGS:00000000f7fe8b40
CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: 0000000020000180 CR3: 00000000a6f78000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 notifier_call_chain+0xb5/0x200 kernel/notifier.c:83
 update_pvclock_gtod kernel/time/timekeeping.c:578 [inline]
 timekeeping_update+0x28a/0x4a0 kernel/time/timekeeping.c:672
 timekeeping_advance+0x663/0x9a0 kernel/time/timekeeping.c:2119
 tick_do_update_jiffies64.part.0+0x183/0x290 kernel/time/tick-sched.c:101
 tick_do_update_jiffies64 kernel/time/tick-sched.c:64 [inline]
 tick_sched_do_timer kernel/time/tick-sched.c:147 [inline]
 tick_sched_timer+0x22c/0x290 kernel/time/tick-sched.c:1313
 __run_hrtimer kernel/time/hrtimer.c:1520 [inline]
 __hrtimer_run_queues+0x1d5/0xfc0 kernel/time/hrtimer.c:1584
 hrtimer_interrupt+0x32a/0x930 kernel/time/hrtimer.c:1646
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1080 [inline]
 __sysvec_apic_timer_interrupt+0x142/0x5e0 arch/x86/kernel/apic/apic.c:1097
 asm_call_on_stack+0xf/0x20 arch/x86/entry/entry_64.S:711
 </IRQ>
 __run_on_irqstack arch/x86/include/asm/irq_stack.h:22 [inline]
 run_on_irqstack_cond arch/x86/include/asm/irq_stack.h:48 [inline]
 sysvec_apic_timer_interrupt+0xe0/0x120 arch/x86/kernel/apic/apic.c:1091
 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:596
RIP: 0010:write_comp_data+0x2f/0x80 kernel/kcov.c:218
Code: 05 16 4c 8e 7e 65 48 8b 34 25 00 ff 01 00 a9 00 01 ff 00 74 0f f6 c4 01 74 59 8b 86 04 14 00 00 85 c0 74 4f 8b 86 e0 13 00 00 <83> f8 03 75 44 48 8b 86 e8 13 00 00 8b b6 e4 13 00 00 4c 8b 00 48
RSP: 0018:ffffc90001686fb0 EFLAGS: 00000246
RAX: 0000000000000000 RBX: 000000001fffffb0 RCX: ffffffff83c646a4
RDX: 00000000011214a3 RSI: ffff88808e7c6180 RDI: 0000000000000004
RBP: 00000000011214a3 R08: 0000000000000001 R09: ffff8880a3a9241f
R10: 000000001fffffb0 R11: 0000000000000000 R12: ffff8880011c14f3
R13: ffff8880000a0050 R14: 0000000000000000 R15: 000000000000028e
 vga16fb_fillrect+0x9d4/0x193b drivers/video/fbdev/vga16fb.c:922
 bit_clear_margins+0x3f6/0x4a0 drivers/video/fbdev/core/bitblit.c:224
 fbcon_clear_margins+0x1d5/0x230 drivers/video/fbdev/core/fbcon.c:1381
 fbcon_switch+0xb6e/0x16c0 drivers/video/fbdev/core/fbcon.c:2363
 redraw_screen+0x2ae/0x770 drivers/tty/vt/vt.c:1015
 fbcon_modechanged+0x575/0x710 drivers/video/fbdev/core/fbcon.c:3001
 fbcon_update_vcs+0x3a/0x50 drivers/video/fbdev/core/fbcon.c:3048
 fb_set_var+0xae8/0xd60 drivers/video/fbdev/core/fbmem.c:1056
 fbcon_switch+0x52c/0x16c0 drivers/video/fbdev/core/fbcon.c:2296
 redraw_screen+0x2ae/0x770 drivers/tty/vt/vt.c:1015
 fbcon_modechanged+0x575/0x710 drivers/video/fbdev/core/fbcon.c:3001
 fbcon_update_vcs+0x3a/0x50 drivers/video/fbdev/core/fbcon.c:3048
 fb_set_var+0xae8/0xd60 drivers/video/fbdev/core/fbmem.c:1056
 do_fb_ioctl+0x33f/0x6c0 drivers/video/fbdev/core/fbmem.c:1109
 fb_compat_ioctl+0x175/0xc10 drivers/video/fbdev/core/fbmem.c:1315
 __do_compat_sys_ioctl+0x1d3/0x230 fs/ioctl.c:847
 do_syscall_32_irqs_on+0x3f/0x60 arch/x86/entry/common.c:403
 __do_fast_syscall_32 arch/x86/entry/common.c:448 [inline]
 do_fast_syscall_32+0x7f/0x120 arch/x86/entry/common.c:474
 entry_SYSENTER_compat+0x6d/0x7c arch/x86/entry/entry_64_compat.S:138
BUG: unable to handle page fault for address: 0000000080010002
#PF: supervisor write access in kernel mode
#PF: error_code(0x0002) - not-present page
PGD 9f797067 P4D 9f797067 PUD 0 
Oops: 0002 [#2] PREEMPT SMP KASAN
CPU: 0 PID: 6794 Comm: syz-executor686 Not tainted 5.8.0-rc3-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:in_gate_area_no_mm+0x0/0x6a arch/x86/entry/vsyscall/vsyscall_64.c:343
Code: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 <00> 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
RSP: 0018:ffffc90000007278 EFLAGS: 00010046
RAX: 0000000080010002 RBX: ffffc90000007318 RCX: ffffffff816a5e70
RDX: ffff88808e7c6180 RSI: ffffffff816a5e9b RDI: 00000000f7fed569
RBP: 00000000f7fed569 R08: ffffc90000007428 R09: ffffffff8c8cc109
R10: 00000000f7fed569 R11: 0000000000000000 R12: ffffc90000007428
R13: 0000000000000001 R14: 00000000f7fed569 R15: ffffc90000007338
FS:  0000000000000000(0000) GS:ffff8880ae600000(0063) knlGS:00000000f7fe8b40
CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: 0000000080010002 CR3: 00000000a6f78000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 is_kernel include/linux/kallsyms.h:43 [inline]
 is_ksym_addr include/linux/kallsyms.h:49 [inline]
 kallsyms_lookup+0xc3/0x2e0 kernel/kallsyms.c:290
 __sprint_symbol+0x9c/0x1c0 kernel/kallsyms.c:363
 symbol_string+0x14c/0x370 lib/vsprintf.c:969
 pointer+0x185/0x970 lib/vsprintf.c:2226
 vsnprintf+0x5b2/0x14f0 lib/vsprintf.c:2624
 vscnprintf+0x29/0x80 lib/vsprintf.c:2723
 vprintk_store+0x44/0x4a0 kernel/printk/printk.c:1942
 vprintk_emit+0x139/0x770 kernel/printk/printk.c:2003
 vprintk_func+0x8f/0x1a6 kernel/printk/printk_safe.c:393
 printk+0xba/0xed kernel/printk/printk.c:2070
 show_ip+0x22/0x30 arch/x86/kernel/dumpstack.c:124
 show_iret_regs+0x10/0x32 arch/x86/kernel/dumpstack.c:131
 __show_regs+0x18/0x50 arch/x86/kernel/process_64.c:72
 show_trace_log_lvl+0x255/0x2b4 arch/x86/kernel/dumpstack.c:274
 show_regs arch/x86/kernel/dumpstack.c:408 [inline]
 __die_body arch/x86/kernel/dumpstack.c:393 [inline]
 die_addr.cold+0x8/0xd arch/x86/kernel/dumpstack.c:433
 __exc_general_protection arch/x86/kernel/traps.c:593 [inline]
 exc_general_protection+0x193/0x2d0 arch/x86/kernel/traps.c:523
 asm_exc_general_protection+0x1e/0x30 arch/x86/include/asm/idtentry.h:559
RIP: 0010:pvclock_gtod_notify+0x0/0x4d0 arch/x86/kvm/x86.c:7400
Code: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 <00> 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
RSP: 0018:ffffc90000007bf8 EFLAGS: 00010046
RAX: 1ffffffff135a814 RBX: 00000000ffffffff RCX: ffffffff814e18bb
RDX: ffffffff8c90f9c0 RSI: 0000000000000000 RDI: ffffffff89ad40a0
RBP: dffffc0000000000 R08: 0000000000000000 R09: ffffffff8c58fa27
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: ffffffff89ad40a0
 notifier_call_chain+0xb5/0x200 kernel/notifier.c:83
 update_pvclock_gtod kernel/time/timekeeping.c:578 [inline]
 timekeeping_update+0x28a/0x4a0 kernel/time/timekeeping.c:672
 timekeeping_advance+0x663/0x9a0 kernel/time/timekeeping.c:2119
 tick_do_update_jiffies64.part.0+0x183/0x290 kernel/time/tick-sched.c:101
 tick_do_update_jiffies64 kernel/time/tick-sched.c:64 [inline]
 tick_sched_do_timer kernel/time/tick-sched.c:147 [inline]
 tick_sched_timer+0x22c/0x290 kernel/time/tick-sched.c:1313
 __run_hrtimer kernel/time/hrtimer.c:1520 [inline]
 __hrtimer_run_queues+0x1d5/0xfc0 kernel/time/hrtimer.c:1584
 hrtimer_interrupt+0x32a/0x930 kernel/time/hrtimer.c:1646
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1080 [inline]
 __sysvec_apic_timer_interrupt+0x142/0x5e0 arch/x86/kernel/apic/apic.c:1097
 asm_call_on_stack+0xf/0x20 arch/x86/entry/entry_64.S:711
 </IRQ>
 __run_on_irqstack arch/x86/include/asm/irq_stack.h:22 [inline]
 run_on_irqstack_cond arch/x86/include/asm/irq_stack.h:48 [inline]
 sysvec_apic_timer_interrupt+0xe0/0x120 arch/x86/kernel/apic/apic.c:1091
 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:596
RIP: 0010:write_comp_data+0x2f/0x80 kernel/kcov.c:218
Code: 05 16 4c 8e 7e 65 48 8b 34 25 00 ff 01 00 a9 00 01 ff 00 74 0f f6 c4 01 74 59 8b 86 04 14 00 00 85 c0 74 4f 8b 86 e0 13 00 00 <83> f8 03 75 44 48 8b 86 e8 13 00 00 8b b6 e4 13 00 00 4c 8b 00 48
RSP: 0018:ffffc90001686fb0 EFLAGS: 00000246
RAX: 0000000000000000 RBX: 000000001fffffb0 RCX: ffffffff83c646a4
RDX: 00000000011214a3 RSI: ffff88808e7c6180 RDI: 0000000000000004
RBP: 00000000011214a3 R08: 0000000000000001 R09: ffff8880a3a9241f
R10: 000000001fffffb0 R11: 0000000000000000 R12: ffff8880011c14f3
R13: ffff8880000a0050 R14: 0000000000000000 R15: 000000000000028e
 vga16fb_fillrect+0x9d4/0x193b drivers/video/fbdev/vga16fb.c:922
 bit_clear_margins+0x3f6/0x4a0 drivers/video/fbdev/core/bitblit.c:224
 fbcon_clear_margins+0x1d5/0x230 drivers/video/fbdev/core/fbcon.c:1381
 fbcon_switch+0xb6e/0x16c0 drivers/video/fbdev/core/fbcon.c:2363
 redraw_screen+0x2ae/0x770 drivers/tty/vt/vt.c:1015
 fbcon_modechanged+0x575/0x710 drivers/video/fbdev/core/fbcon.c:3001
 fbcon_update_vcs+0x3a/0x50 drivers/video/fbdev/core/fbcon.c:3048
 fb_set_var+0xae8/0xd60 drivers/video/fbdev/core/fbmem.c:1056
 fbcon_switch+0x52c/0x16c0 drivers/video/fbdev/core/fbcon.c:2296
 redraw_screen+0x2ae/0x770 drivers/tty/vt/vt.c:1015
 fbcon_modechanged+0x575/0x710 drivers/video/fbdev/core/fbcon.c:3001
 fbcon_update_vcs+0x3a/0x50 drivers/video/fbdev/core/fbcon.c:3048
 fb_set_var+0xae8/0xd60 drivers/video/fbdev/core/fbmem.c:1056
 do_fb_ioctl+0x33f/0x6c0 drivers/video/fbdev/core/fbmem.c:1109
 fb_compat_ioctl+0x175/0xc10 drivers/video/fbdev/core/fbmem.c:1315
 __do_compat_sys_ioctl+0x1d3/0x230 fs/ioctl.c:847
 do_syscall_32_irqs_on+0x3f/0x60 arch/x86/entry/common.c:403
 __do_fast_syscall_32 arch/x86/entry/common.c:448 [inline]
 do_fast_syscall_32+0x7f/0x120 arch/x86/entry/common.c:474
 entry_SYSENTER_compat+0x6d/0x7c arch/x86/entry/entry_64_compat.S:138
BUG: unable to handle page fault for address: 0000000080010002
#PF: supervisor write access in kernel mode
#PF: error_code(0x0002) - not-present page
PGD 9f797067 P4D 9f797067 PUD 0 
Oops: 0002 [#3] PREEMPT SMP KASAN
CPU: 0 PID: 6794 Comm: syz-executor686 Not tainted 5.8.0-rc3-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:in_gate_area_no_mm+0x0/0x6a arch/x86/entry/vsyscall/vsyscall_64.c:343
Code: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 <00> 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
RSP: 0018:ffffc90000006760 EFLAGS: 00010046
RAX: 0000000080010002 RBX: ffffc90000006800 RCX: ffffffff816a5e70
RDX: ffff88808e7c6180 RSI: ffffffff816a5e9b RDI: 00000000f7fed569
RBP: 00000000f7fed569 R08: ffffc90000006910 R09: ffff8880ae6249c3
R10: 00000000f7fed569 R11: 0000000000000001 R12: ffffc90000006910
R13: 0000000000000001 R14: 00000000f7fed569 R15: ffffc90000006820
FS:  0000000000000000(0000) GS:ffff8880ae600000(0063) knlGS:00000000f7fe8b40
CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: 0000000080010002 CR3: 00000000a6f78000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 is_kernel include/linux/kallsyms.h:43 [inline]
 is_ksym_addr include/linux/kallsyms.h:49 [inline]
 kallsyms_lookup+0xc3/0x2e0 kernel/kallsyms.c:290
 __sprint_symbol+0x9c/0x1c0 kernel/kallsyms.c:363
 symbol_string+0x14c/0x370 lib/vsprintf.c:969
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