general protection fault, probably for non-canonical address 0x1ffffffef40f5c2c: 0000 [#1] PREEMPT SMP KASAN CPU: 0 PID: 11615 Comm: syz-executor.1 Not tainted 5.9.0-rc5-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:update_pvclock_gtod arch/x86/kvm/x86.c:1743 [inline] RIP: 0010:pvclock_gtod_notify+0x11d/0x490 arch/x86/kvm/x86.c:7452 Code: 10 48 89 f8 48 c1 e8 03 42 80 3c 20 00 74 05 e8 d9 72 a7 00 49 8b 47 10 48 89 05 f6 e8 ca 09 49 8d 7f 08 48 89 f8 48 c1 e8 03 <42> 80 3c 70 07 77 00 e8 b7 72 a7 00 49 8b 47 08 48 89 05 dc e8 ca RSP: 0018:ffffc90000007c50 EFLAGS: 00010806 RAX: 1ffffffff170797e RBX: ffffffff894cc67c RCX: ffffffff815adc44 RDX: dffffc0000000000 RSI: 0000000000000008 RDI: ffffffff8b83cbf0 RBP: ffffffff894bd1a8 R08: dffffc0000000000 R09: fffffbfff167d6a0 R10: fffffbfff167d6a0 R11: 0000000000000000 R12: dffffc0000000000 R13: 00000000ffffffff R14: ffffffff814f7157 R15: ffffffff8b83cbe8 FS: 00007f4490343700(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fe91a88ddb8 CR3: 0000000091079000 CR4: 00000000001506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: notifier_call_chain kernel/notifier.c:83 [inline] __raw_notifier_call_chain kernel/notifier.c:361 [inline] raw_notifier_call_chain+0xe7/0x170 kernel/notifier.c:368 update_pvclock_gtod kernel/time/timekeeping.c:581 [inline] timekeeping_update+0x281/0x3f0 kernel/time/timekeeping.c:675 timekeeping_advance+0x830/0xa00 kernel/time/timekeeping.c:2122 tick_sched_do_timer kernel/time/tick-sched.c:147 [inline] tick_sched_timer+0xba/0x410 kernel/time/tick-sched.c:1321 __run_hrtimer kernel/time/hrtimer.c:1524 [inline] __hrtimer_run_queues+0x42d/0x930 kernel/time/hrtimer.c:1588 hrtimer_interrupt+0x373/0xd60 kernel/time/hrtimer.c:1650 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1080 [inline] __sysvec_apic_timer_interrupt+0xf0/0x260 arch/x86/kernel/apic/apic.c:1097 asm_call_on_stack+0xf/0x20 arch/x86/entry/entry_64.S:706 __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+0x94/0xf0 arch/x86/kernel/apic/apic.c:1091 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:581 RIP: 0010:__sanitizer_cov_trace_pc+0x0/0x60 kernel/kcov.c:193 Code: 0b e8 24 00 00 00 0f 0b 66 90 53 48 89 fb e8 17 00 00 00 48 8b 3d f8 0a 1a 08 48 89 de 5b e9 77 5a 3f 00 cc cc cc cc cc cc cc <48> 8b 04 24 65 48 8b 0c 25 00 fe 01 00 65 8b 15 28 f0 8c 7e f7 c2 RSP: 0018:ffffc90015ef7620 EFLAGS: 00000246 RAX: 0000000000000008 RBX: 0000000000000000 RCX: 0000000000040000 RDX: ffff88809ff820c0 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 0000000000000000 R08: ffffffff83d52653 R09: ffffffff83d51d5c R10: 0000000000000002 R11: ffff88809ff820c0 R12: dffffc0000000000 R13: ffff888218a99c41 R14: 0000000000000000 R15: 0000000000000008 slow_imageblit drivers/video/fbdev/core/cfbimgblt.c:171 [inline] cfb_imageblit+0xbc5/0x11e0 drivers/video/fbdev/core/cfbimgblt.c:302 bit_putcs+0x17ac/0x1bf0 drivers/video/fbdev/core/bitblit.c:105 fbcon_putcs+0x790/0xaf0 drivers/video/fbdev/core/fbcon.c:1308 con_flush drivers/tty/vt/vt.c:2575 [inline] vc_con_write_normal drivers/tty/vt/vt.c:2803 [inline] do_con_write+0x115b/0xd580 drivers/tty/vt/vt.c:2910 con_write+0x20/0x40 drivers/tty/vt/vt.c:3250 process_output_block drivers/tty/n_tty.c:595 [inline] n_tty_write+0xcbf/0x1170 drivers/tty/n_tty.c:2333 do_tty_write drivers/tty/tty_io.c:962 [inline] tty_write+0x593/0x940 drivers/tty/tty_io.c:1046 vfs_write+0x2d3/0xd10 fs/read_write.c:576 ksys_write+0x11b/0x220 fs/read_write.c:631 do_syscall_64+0x31/0x70 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x45d5f9 Code: 5d b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 2b b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f4490342c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 0000000000038980 RCX: 000000000045d5f9 RDX: 0000000000001058 RSI: 0000000020001440 RDI: 0000000000000006 RBP: 000000000118cf80 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000118cf4c R13: 00007fff8f0cd67f R14: 00007f44903439c0 R15: 000000000118cf4c Modules linked in: ---[ end trace 6262308370d2b0a0 ]--- RIP: 0010:update_pvclock_gtod arch/x86/kvm/x86.c:1743 [inline] RIP: 0010:pvclock_gtod_notify+0x11d/0x490 arch/x86/kvm/x86.c:7452 Code: 10 48 89 f8 48 c1 e8 03 42 80 3c 20 00 74 05 e8 d9 72 a7 00 49 8b 47 10 48 89 05 f6 e8 ca 09 49 8d 7f 08 48 89 f8 48 c1 e8 03 <42> 80 3c 70 07 77 00 e8 b7 72 a7 00 49 8b 47 08 48 89 05 dc e8 ca RSP: 0018:ffffc90000007c50 EFLAGS: 00010806 RAX: 1ffffffff170797e RBX: ffffffff894cc67c RCX: ffffffff815adc44 RDX: dffffc0000000000 RSI: 0000000000000008 RDI: ffffffff8b83cbf0 RBP: ffffffff894bd1a8 R08: dffffc0000000000 R09: fffffbfff167d6a0 R10: fffffbfff167d6a0 R11: 0000000000000000 R12: dffffc0000000000 R13: 00000000ffffffff R14: ffffffff814f7157 R15: ffffffff8b83cbe8 FS: 00007f4490343700(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fe91a88ddb8 CR3: 0000000091079000 CR4: 00000000001506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400