general protection fault, probably for non-canonical address 0xdffffc001192eb3a: 0000 [#1] PREEMPT SMP KASAN KASAN: probably user-memory-access in range [0x000000008c9759d0-0x000000008c9759d7] CPU: 0 PID: 14918 Comm: syz-executor545 Not tainted 5.9.0-rc4-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:1752 [inline] RIP: 0010:pvclock_gtod_notify+0x2bf/0x570 arch/x86/kvm/x86.c:7449 Code: 80 3c 02 00 0f 85 9c 02 00 00 48 70 77 77 07 8d 7b 50 48 89 fa 48 c1 ea 03 48 89 05 fb 38 df 0a 48 b8 00 00 00 00 00 fc ff df <0f> b6 04 02 84 c0 74 08 3c 03 0f 8e e7 01 00 00 8b 43 50 48 8d 7b RSP: 0018:ffffc90000007be8 EFLAGS: 00010006 RAX: dffffc0000000000 RBX: ffffffff8c975980 RCX: ffffffff815a184b RDX: 000000001192eb3a RSI: 0000000000000001 RDI: 000000008c9759d0 RBP: ffffffff89b35860 R08: 0000000000000000 R09: ffffffff8c5f5a1f R10: fffffbfff18beb43 R11: 0000000000000001 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: ffffffff89ae98e0 FS: 00007fd63a073700(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020000188 CR3: 0000000091269000 CR4: 00000000001506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: notifier_call_chain+0xb5/0x200 kernel/notifier.c:83 update_pvclock_gtod kernel/time/timekeeping.c:581 [inline] timekeeping_update+0x28a/0x4a0 kernel/time/timekeeping.c:675 timekeeping_advance+0x6ad/0xa40 kernel/time/timekeeping.c:2122 tick_do_update_jiffies64.part.0+0x1ec/0x330 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+0x236/0x2a0 kernel/time/tick-sched.c:1321 __run_hrtimer kernel/time/hrtimer.c:1524 [inline] __hrtimer_run_queues+0x1d5/0xfc0 kernel/time/hrtimer.c:1588 hrtimer_interrupt+0x32a/0x930 kernel/time/hrtimer.c:1650 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: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+0xb2/0xf0 arch/x86/kernel/apic/apic.c:1091 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:581 RIP: 0010:rdtsc_ordered arch/x86/include/asm/msr.h:243 [inline] RIP: 0010:delay_tsc+0x4b/0xb0 arch/x86/lib/delay.c:72 Code: c1 e2 20 48 09 c2 48 89 d5 eb 16 f3 90 bf 01 00 00 00 e8 98 76 99 fd e8 63 38 3e 04 44 39 e0 75 36 0f 01 f9 66 90 48 c1 e2 20 <48> 89 d3 48 09 c3 48 89 d8 48 29 e8 4c 39 e8 73 24 bf 01 00 00 00 RSP: 0018:ffffc900028f78c0 EFLAGS: 00000206 RAX: 00000000a4344943 RBX: 000003a1a434487e RCX: 0000000000000000 RDX: 000003a100000000 RSI: 0000000000000001 RDI: 0000000000000000 RBP: 000003a1a41de1b0 R08: 0000000000000001 R09: ffff8880a2c4d1cf R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000231872 R14: 0000000000000000 R15: dffffc0000000000 vga16fb_set_par+0x79b/0xa90 drivers/video/fbdev/vga16fb.c:625 fb_set_var+0x4ba/0xce0 drivers/video/fbdev/core/fbmem.c:1028 do_fb_ioctl+0x2f9/0x690 drivers/video/fbdev/core/fbmem.c:1104 fb_ioctl+0xdd/0x130 drivers/video/fbdev/core/fbmem.c:1181 vfs_ioctl fs/ioctl.c:48 [inline] __do_sys_ioctl fs/ioctl.c:753 [inline] __se_sys_ioctl fs/ioctl.c:739 [inline] __x64_sys_ioctl+0x193/0x200 fs/ioctl.c:739 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x44b0a9 Code: e8 1c e6 ff ff 48 83 c4 18 c3 0f 1f 80 00 00 00 00 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 0b 06 fc ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007fd63a072ce8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00000000006e2c48 RCX: 000000000044b0a9 RDX: 0000000020000000 RSI: 0000000000004601 RDI: 0000000000000003 RBP: 00000000006e2c40 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000006e2c4c R13: 00007ffe72b2735f R14: 00007fd63a0739c0 R15: 20c49ba5e353f7cf Modules linked in: ---[ end trace 6930d3809654eaca ]--- RIP: 0010:update_pvclock_gtod arch/x86/kvm/x86.c:1752 [inline] RIP: 0010:pvclock_gtod_notify+0x2bf/0x570 arch/x86/kvm/x86.c:7449 Code: 80 3c 02 00 0f 85 9c 02 00 00 48 70 77 77 07 8d 7b 50 48 89 fa 48 c1 ea 03 48 89 05 fb 38 df 0a 48 b8 00 00 00 00 00 fc ff df <0f> b6 04 02 84 c0 74 08 3c 03 0f 8e e7 01 00 00 8b 43 50 48 8d 7b RSP: 0018:ffffc90000007be8 EFLAGS: 00010006 RAX: dffffc0000000000 RBX: ffffffff8c975980 RCX: ffffffff815a184b RDX: 000000001192eb3a RSI: 0000000000000001 RDI: 000000008c9759d0 RBP: ffffffff89b35860 R08: 0000000000000000 R09: ffffffff8c5f5a1f R10: fffffbfff18beb43 R11: 0000000000000001 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: ffffffff89ae98e0 FS: 00007fd63a073700(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020000188 CR3: 0000000091269000 CR4: 00000000001506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400