BUG: kernel NULL pointer dereference, address: 0000000000000000
#PF: supervisor read access in kernel mode
#PF: error_code(0x0000) - not-present page
PGD 1cb6f9067 P4D 1cb6f9067 PUD 1c58ef067 PMD 0 
Oops: 0000 [#1] SMP KASAN
CPU: 0 PID: 9000 Comm: syz-executor.5 Not tainted 5.5.0-rc2-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:__read_once_size include/linux/compiler.h:199 [inline]
RIP: 0010:__sanitizer_cov_trace_pc+0x3d/0x60 kernel/kcov.c:203
Code: 01 1f 00 48 8b 34 24 74 09 80 b8 d4 12 00 00 00 74 2b 8b 90 b0 12 00 00 83 fa 02 75 20 48 8b 88 b8 12 00 00 8b 80 b4 12 00 00 <48> 8b 11 48 83 c2 01 48 39 d0 76 07 48 89 34 d1 48 89 11 c3 0f 1f
RSP: 0018:ffff8881d4257e18 EFLAGS: 00010246
RAX: 0000000000000000 RBX: ffff8881d4257eb8 RCX: 0000000000000000
RDX: 0000000000000002 RSI: ffffffff8130f4db RDI: ffff8881d4257eb8
RBP: ffff8881d4257e78 R08: ffff8881d3766200 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 00007f795b1eac60
R13: ffffffff85c86800 R14: ffff8881d4257eb8 R15: 0000000000000000
FS:  00007f795b1eb700(0000) GS:ffff8881db200000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 00000001cd3ae000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 ktime_get_ts64+0x1b/0x2b0 kernel/time/timekeeping.c:887
 posix_ktime_get_ts+0x11/0x20 kernel/time/posix-timers.c:192
 __do_sys_clock_gettime kernel/time/posix-timers.c:1070 [inline]
 __se_sys_clock_gettime kernel/time/posix-timers.c:1060 [inline]
 __x64_sys_clock_gettime+0x149/0x240 kernel/time/posix-timers.c:1060
 do_syscall_64+0xb6/0x5c0 arch/x86/entry/common.c:294
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x45d75a
Code: 25 18 00 00 00 00 74 01 f0 48 0f b1 3d ef b1 61 00 48 39 c2 75 da f3 c3 0f 1f 84 00 00 00 00 00 48 63 ff b8 e4 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 06 f3 c3 0f 1f 40 00 48 c7 c2 d4 ff ff ff f7
RSP: 002b:00007f795b1eac58 EFLAGS: 00000246 ORIG_RAX: 00000000000000e4
RAX: ffffffffffffffda RBX: 000000000075bf28 RCX: 000000000045d75a
RDX: 0000000000000000 RSI: 00007f795b1eac60 RDI: 0000000000000001
RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000075bf2c
R13: 00000000004cafb6 R14: 00000000004e4510 R15: 000000000075bf2c
Modules linked in:
CR2: 0000000000000000
---[ end trace c6a60d13cb757acf ]---
RIP: 0010:__read_once_size include/linux/compiler.h:199 [inline]
RIP: 0010:__sanitizer_cov_trace_pc+0x3d/0x60 kernel/kcov.c:203
Code: 01 1f 00 48 8b 34 24 74 09 80 b8 d4 12 00 00 00 74 2b 8b 90 b0 12 00 00 83 fa 02 75 20 48 8b 88 b8 12 00 00 8b 80 b4 12 00 00 <48> 8b 11 48 83 c2 01 48 39 d0 76 07 48 89 34 d1 48 89 11 c3 0f 1f
RSP: 0018:ffff8881d4257e18 EFLAGS: 00010246
RAX: 0000000000000000 RBX: ffff8881d4257eb8 RCX: 0000000000000000
RDX: 0000000000000002 RSI: ffffffff8130f4db RDI: ffff8881d4257eb8
RBP: ffff8881d4257e78 R08: ffff8881d3766200 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 00007f795b1eac60
R13: ffffffff85c86800 R14: ffff8881d4257eb8 R15: 0000000000000000
FS:  00007f795b1eb700(0000) GS:ffff8881db200000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 00000001cd3ae000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400