general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007]
CPU: 1 PID: 0 Comm: swapper/1 Not tainted 5.8.0-rc3-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:__switch_to_asm+0x0/0x40 arch/x86/entry/entry_64.S:228
Code: 00 00 00 00 00 00 00 00 00 00 48 c7 84 c4 48 01 00 00 00 00 00 00 8b 44 24 3c 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:ffffc90000d3fd00 EFLAGS: 00010046
RAX: dffffc0000000000 RBX: ffff8880ae735e18 RCX: 0000000000000000
RDX: 1ffff11015ce6bc2 RSI: ffff88808ad92180 RDI: ffff8880a9638340
RBP: ffffc90000d3fdd0 R08: 0000000000000001 R09: ffff8880a9638c08
R10: fffffbfff155cb29 R11: 0000000000000000 R12: ffff8880ae735e00
R13: ffff8880a9638340 R14: ffff88808ad92180 R15: ffff8880a9638770
FS:  0000000000000000(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000006cb090 CR3: 00000000a6596000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 context_switch kernel/sched/core.c:3453 [inline]
 __schedule+0x8e1/0x1eb0 kernel/sched/core.c:4178
 schedule_idle+0x53/0x90 kernel/sched/core.c:4281
 do_idle+0x323/0x6d0 kernel/sched/idle.c:304
 cpu_startup_entry+0x14/0x20 kernel/sched/idle.c:372
 start_secondary+0x2b3/0x370 arch/x86/kernel/smpboot.c:268
 secondary_startup_64+0xa4/0xb0 arch/x86/kernel/head_64.S:243
Modules linked in:
---[ end trace a36c13ed0b338871 ]---
RIP: 0010:__switch_to_asm+0x0/0x40 arch/x86/entry/entry_64.S:228
Code: 00 00 00 00 00 00 00 00 00 00 48 c7 84 c4 48 01 00 00 00 00 00 00 8b 44 24 3c 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:ffffc90000d3fd00 EFLAGS: 00010046
RAX: dffffc0000000000 RBX: ffff8880ae735e18 RCX: 0000000000000000
RDX: 1ffff11015ce6bc2 RSI: ffff88808ad92180 RDI: ffff8880a9638340
RBP: ffffc90000d3fdd0 R08: 0000000000000001 R09: ffff8880a9638c08
R10: fffffbfff155cb29 R11: 0000000000000000 R12: ffff8880ae735e00
R13: ffff8880a9638340 R14: ffff88808ad92180 R15: ffff8880a9638770
FS:  0000000000000000(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000006cb090 CR3: 00000000a6596000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400