BUG: kernel NULL pointer dereference, address: 0000000000000077
#PF: supervisor read access in kernel mode
#PF: error_code(0x0000) - not-present page
PGD 0 P4D 0 
Oops: 0000 [#1] PREEMPT SMP
CPU: 0 PID: 10214 Comm: syz-executor.2 Not tainted 5.10.0-rc6-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:arch_atomic64_read arch/x86/include/asm/atomic64_64.h:22 [inline]
RIP: 0010:atomic64_read include/asm-generic/atomic-instrumented.h:838 [inline]
RIP: 0010:atomic_long_read include/asm-generic/atomic-long.h:29 [inline]
RIP: 0010:filp_close+0x4/0x60 fs/open.c:1274
Code: 66 0f 1f 44 00 00 8b 86 84 00 00 00 25 e3 7f ff ff 0d 00 00 20 00 89 86 84 00 00 00 31 c0 c3 0f 1f 80 00 00 00 00 41 54 55 53 <48> 8b 47 78 48 85 c0 0f 84 bf f9 37 02 48 8b 47 28 45 31 e4 48 89
RSP: 0018:ffffc90002ddbd28 EFLAGS: 00010286
RAX: 0000000000000000 RBX: ffff88810dcb09c0 RCX: ffff88811e87ba20
RDX: ffff88811ea53800 RSI: ffff88810dcb09c0 RDI: ffffffffffffffff
RBP: ffffffffffffffff R08: 0000000000000001 R09: 0000000000000001
R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000001
R13: 0000000000000000 R14: 0000000000000000 R15: ffff88811e87eb80
FS:  0000000000000000(0000) GS:ffff88813bc00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000077 CR3: 000000000508a000 CR4: 00000000001506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 close_files fs/file.c:402 [inline]
 put_files_struct+0x67/0xc0 fs/file.c:430
 do_exit+0x392/0xd40 kernel/exit.c:804
 do_group_exit+0x34/0xb0 kernel/exit.c:906
 get_signal+0x180/0xdb0 kernel/signal.c:2758
 arch_do_signal+0x2b/0x8d0 arch/x86/kernel/signal.c:811
 exit_to_user_mode_loop kernel/entry/common.c:161 [inline]
 exit_to_user_mode_prepare+0xec/0x1c0 kernel/entry/common.c:191
 syscall_exit_to_user_mode+0x38/0x260 kernel/entry/common.c:266
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x45e149
Code: Unable to access opcode bytes at RIP 0x45e11f.
RSP: 002b:00007f637e3f9cf8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: 0000000000000001 RBX: 000000000119bf88 RCX: 000000000045e149
RDX: 00000000000f4240 RSI: 0000000000000081 RDI: 000000000119bf8c
RBP: 000000000119bf80 R08: 0000000000000018 R09: 0000000000000000
R10: ffffffffffffffff R11: 0000000000000246 R12: 000000000119bf8c
R13: 00007fffd7515bbf R14: 00007f637e3fa9c0 R15: 000000000119bf8c
Modules linked in:
CR2: 0000000000000077
---[ end trace b7138e616e0159ea ]---
RIP: 0010:arch_atomic64_read arch/x86/include/asm/atomic64_64.h:22 [inline]
RIP: 0010:atomic64_read include/asm-generic/atomic-instrumented.h:838 [inline]
RIP: 0010:atomic_long_read include/asm-generic/atomic-long.h:29 [inline]
RIP: 0010:filp_close+0x4/0x60 fs/open.c:1274
Code: 66 0f 1f 44 00 00 8b 86 84 00 00 00 25 e3 7f ff ff 0d 00 00 20 00 89 86 84 00 00 00 31 c0 c3 0f 1f 80 00 00 00 00 41 54 55 53 <48> 8b 47 78 48 85 c0 0f 84 bf f9 37 02 48 8b 47 28 45 31 e4 48 89
RSP: 0018:ffffc90002ddbd28 EFLAGS: 00010286
RAX: 0000000000000000 RBX: ffff88810dcb09c0 RCX: ffff88811e87ba20
RDX: ffff88811ea53800 RSI: ffff88810dcb09c0 RDI: ffffffffffffffff
RBP: ffffffffffffffff R08: 0000000000000001 R09: 0000000000000001
R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000001
R13: 0000000000000000 R14: 0000000000000000 R15: ffff88811e87eb80
FS:  0000000000000000(0000) GS:ffff88813bc00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000077 CR3: 000000000508a000 CR4: 00000000001506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400