general protection fault, probably for non-canonical address 0xdffffc0040000033: 0000 [#1] PREEMPT SMP KASAN KASAN: probably user-memory-access in range [0x0000000200000198-0x000000020000019f] CPU: 0 PID: 262216 Comm:  Not tainted 6.4.0-rc4-syzkaller #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.14.0-2 04/01/2014 RIP: 0010:get_running_cputimer include/linux/sched/cputime.h:79 [inline] RIP: 0010:account_group_system_time include/linux/sched/cputime.h:143 [inline] RIP: 0010:account_system_index_time+0x86/0x2f0 kernel/sched/cputime.c:173 Code: 63 02 00 00 48 8b 9d f8 08 00 00 48 b8 00 00 00 00 00 fc ff df 48 8d bb 98 01 00 00 4c 8d b3 38 01 00 00 48 89 fa 48 c1 ea 03 <0f> b6 04 02 84 c0 74 08 3c 03 0f 8e e7 01 00 00 8b 83 98 01 00 00 RSP: 0018:ffffc90000007da0 EFLAGS: 00010006 RAX: dffffc0000000000 RBX: 0000000200000001 RCX: 1ffffffff1825d40 RDX: 0000000040000033 RSI: 0000000000979de9 RDI: 0000000200000199 RBP: ffff888116ed0840 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: ffffc90000007ff8 R12: 0000000000979de9 R13: 0000000000000002 R14: 0000000200000139 R15: ffffffff8176c460 FS: 0000000000000000(0000) GS:ffff88806b600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffcd3d25f80 CR3: 00000000641b3000 CR4: 0000000000350ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: update_process_times+0x26/0x1a0 kernel/time/timer.c:2069 tick_sched_handle+0x8e/0x170 kernel/time/tick-sched.c:243 tick_sched_timer+0xee/0x110 kernel/time/tick-sched.c:1481 __run_hrtimer kernel/time/hrtimer.c:1685 [inline] __hrtimer_run_queues+0x1c0/0xbe0 kernel/time/hrtimer.c:1749 hrtimer_interrupt+0x320/0x7b0 kernel/time/hrtimer.c:1811 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1095 [inline] __sysvec_apic_timer_interrupt+0x14a/0x430 arch/x86/kernel/apic/apic.c:1112 sysvec_apic_timer_interrupt+0x92/0xc0 arch/x86/kernel/apic/apic.c:1106 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:get_running_cputimer include/linux/sched/cputime.h:79 [inline] RIP: 0010:account_group_system_time include/linux/sched/cputime.h:143 [inline] RIP: 0010:account_system_index_time+0x86/0x2f0 kernel/sched/cputime.c:173 Code: 63 02 00 00 48 8b 9d f8 08 00 00 48 b8 00 00 00 00 00 fc ff df 48 8d bb 98 01 00 00 4c 8d b3 38 01 00 00 48 89 fa 48 c1 ea 03 <0f> b6 04 02 84 c0 74 08 3c 03 0f 8e e7 01 00 00 8b 83 98 01 00 00 RSP: 0018:ffffc90000007da0 EFLAGS: 00010006 RAX: dffffc0000000000 RBX: 0000000200000001 RCX: 1ffffffff1825d40 RDX: 0000000040000033 RSI: 0000000000979de9 RDI: 0000000200000199 RBP: ffff888116ed0840 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: ffffc90000007ff8 R12: 0000000000979de9 R13: 0000000000000002 R14: 0000000200000139 R15: ffffffff8176c460 FS: 0000000000000000(0000) GS:ffff88806b600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffcd3d25f80 CR3: 00000000641b3000 CR4: 0000000000350ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 63 02 movsxd (%rdx),%eax 2: 00 00 add %al,(%rax) 4: 48 8b 9d f8 08 00 00 mov 0x8f8(%rbp),%rbx b: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 12: fc ff df 15: 48 8d bb 98 01 00 00 lea 0x198(%rbx),%rdi 1c: 4c 8d b3 38 01 00 00 lea 0x138(%rbx),%r14 23: 48 89 fa mov %rdi,%rdx 26: 48 c1 ea 03 shr $0x3,%rdx * 2a: 0f b6 04 02 movzbl (%rdx,%rax,1),%eax <-- trapping instruction 2e: 84 c0 test %al,%al 30: 74 08 je 0x3a 32: 3c 03 cmp $0x3,%al 34: 0f 8e e7 01 00 00 jle 0x221 3a: 8b 83 98 01 00 00 mov 0x198(%rbx),%eax