general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007]
CPU: 0 PID: 28894 Comm: syz-executor.2 Not tainted 5.8.0-rc7-next-20200731-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:229
Code: 00 00 00 07 07 00 07 07 00 00 00 00 00 00 00 00 00 00 00 00 07 07 07 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 07 07 07 07 07 07
RSP: 0018:ffffc90009bd78d0 EFLAGS: 00010046
RAX: dffffc0000000000 RBX: ffff8880ae635dd8 RCX: 0000000000000000
RDX: 1ffff11015cc6bba RSI: ffff8880488d2400 RDI: ffff8880a60dc380
RBP: ffffc90009bd79a8 R08: 0000000000000001 R09: ffff8880a60dcc48
R10: fffffbfff1573329 R11: 0000000000000001 R12: ffff8880a60dc380
R13: ffff8880ae635dc0 R14: ffff8880488d2400 R15: ffff8880a60dc7b0
FS:  00007f1801358700(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f2c95b71f60 CR3: 00000000942e9000 CR4: 00000000001506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 context_switch kernel/sched/core.c:3669 [inline]
 __schedule+0x8e5/0x21e0 kernel/sched/core.c:4418
 preempt_schedule_irq+0xb0/0x150 kernel/sched/core.c:4676
 irqentry_exit_cond_resched kernel/entry/common.c:332 [inline]
 irqentry_exit_cond_resched kernel/entry/common.c:324 [inline]
 irqentry_exit+0x65/0x90 kernel/entry/common.c:362
 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:581
RIP: 0010:__sanitizer_cov_trace_pc+0x15/0x60 kernel/kcov.c:193
Code: 0f 1f 44 00 00 48 8b be b0 01 00 00 e8 b4 ff ff ff 31 c0 c3 90 65 48 8b 14 25 c0 fe 01 00 65 8b 05 60 be 8d 7e a9 00 01 ff 00 <48> 8b 34 24 74 0f f6 c4 01 74 35 8b 82 04 14 00 00 85 c0 74 2b 8b
RSP: 0018:ffffc90009bd7a98 EFLAGS: 00000246
RAX: 0000000080000000 RBX: 0000000000000000 RCX: ffffffff83f1cb20
RDX: ffff8880a60dc380 RSI: ffff8880a60dc380 RDI: 0000000000000005
RBP: dffffc0000000000 R08: 0000000000000001 R09: ffff8880a60dcc48
R10: 0000000000000000 R11: 0000000000000000 R12: ffff888218981270
R13: 0000000000000001 R14: ffff8880aa1c6000 R15: 000000000000004f
 vc_translate drivers/tty/vt/vt.c:2684 [inline]
 do_con_write+0x37d/0x1d70 drivers/tty/vt/vt.c:2894
 con_write+0x22/0xb0 drivers/tty/vt/vt.c:3249
 process_output_block drivers/tty/n_tty.c:595 [inline]
 n_tty_write+0x3ce/0xf80 drivers/tty/n_tty.c:2333
 do_tty_write drivers/tty/tty_io.c:962 [inline]
 tty_write+0x4d9/0x870 drivers/tty/tty_io.c:1046
 vfs_write+0x2b0/0x730 fs/read_write.c:593
 ksys_write+0x12d/0x250 fs/read_write.c:648
 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x45cc79
Code: 2d b6 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 fb b5 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007f1801357c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000000000037a40 RCX: 000000000045cc79
RDX: 0000000000001006 RSI: 0000000020001440 RDI: 0000000000000004
RBP: 000000000078bf40 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000078bf0c
R13: 00007ffc282fce1f R14: 00007f18013589c0 R15: 000000000078bf0c
Modules linked in:
---[ end trace 3bc3011ab7b45408 ]---
RIP: 0010:__switch_to_asm+0x0/0x40 arch/x86/entry/entry_64.S:229
Code: 00 00 00 07 07 00 07 07 00 00 00 00 00 00 00 00 00 00 00 00 07 07 07 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 07 07 07 07 07 07
RSP: 0018:ffffc90009bd78d0 EFLAGS: 00010046
RAX: dffffc0000000000 RBX: ffff8880ae635dd8 RCX: 0000000000000000
RDX: 1ffff11015cc6bba RSI: ffff8880488d2400 RDI: ffff8880a60dc380
RBP: ffffc90009bd79a8 R08: 0000000000000001 R09: ffff8880a60dcc48
R10: fffffbfff1573329 R11: 0000000000000001 R12: ffff8880a60dc380
R13: ffff8880ae635dc0 R14: ffff8880488d2400 R15: ffff8880a60dc7b0
FS:  00007f1801358700(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f2c95b71f60 CR3: 00000000942e9000 CR4: 00000000001506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400