syzbot

PANIC: double fault, error_code: 0x0
==================================================================
CPU: 0 PID: 10117 Comm: syz-executor7 Not tainted 4.18.0-rc3+ #55
BUG: KASAN: stack-out-of-bounds in debug_spin_lock_before kernel/locking/spinlock_debug.c:83 [inline]
BUG: KASAN: stack-out-of-bounds in do_raw_spin_lock+0x1c0/0x200 kernel/locking/spinlock_debug.c:112
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Read of size 4 at addr ffff88019b92614c by task syz-executor5/4481
RIP: 0010:__lock_acquire+0x2e/0x5020 kernel/locking/lockdep.c:3294

Code: 41 57 
CPU: 1 PID: 4481 Comm: syz-executor5 Not tainted 4.18.0-rc3+ #55
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
41 89 
Call Trace:
cf 
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x1c9/0x2b4 lib/dump_stack.c:113
41 
56 41 
55 
49 
89 fd 
 print_address_description+0x6c/0x20b mm/kasan/report.c:256
41 
54 
 kasan_report_error mm/kasan/report.c:354 [inline]
 kasan_report.cold.7+0x242/0x2fe mm/kasan/report.c:412
45 
 __asan_report_load4_noabort+0x14/0x20 mm/kasan/report.c:432
89 cc 
 debug_spin_lock_before kernel/locking/spinlock_debug.c:83 [inline]
 do_raw_spin_lock+0x1c0/0x200 kernel/locking/spinlock_debug.c:112
53 
 __raw_spin_lock_bh include/linux/spinlock_api_smp.h:136 [inline]
 _raw_spin_lock_bh+0x39/0x40 kernel/locking/spinlock.c:168
65 
4c 8b 
 spin_lock_bh include/linux/spinlock.h:315 [inline]
 lock_sock_nested+0x46/0x120 net/core/sock.c:2877
34 25 
 lock_sock include/net/sock.h:1491 [inline]
 tcp_close+0x83/0x12d0 net/ipv4/tcp.c:2324
40 ee 
01 00 
48 83 
e4 
f0 
 inet_release+0x104/0x1f0 net/ipv4/af_inet.c:428
48 81 
 __sock_release+0xd7/0x260 net/socket.c:599
ec 60 
03 00 
 sock_close+0x19/0x20 net/socket.c:1150
00 48 
 __fput+0x355/0x8b0 fs/file_table.c:209
8b 
45 10 
<89> 94 
24 
 ____fput+0x15/0x20 fs/file_table.c:243
80 
 task_work_run+0x1ec/0x2a0 kernel/task_work.c:113
00 
00 
00 
 tracehook_notify_resume include/linux/tracehook.h:192 [inline]
 exit_to_usermode_loop+0x313/0x370 arch/x86/entry/common.c:166
48 
ba 00 
00 
 prepare_exit_to_usermode arch/x86/entry/common.c:197 [inline]
 syscall_return_slowpath arch/x86/entry/common.c:268 [inline]
 do_syscall_64+0x6be/0x820 arch/x86/entry/common.c:293
00 
00 
00 
fc 
ff df 
48 
89 
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
84 
RIP: 0033:0x40fb70
24 
Code: 
98 
01 
f0 
RSP: 0018:ffff88019b3b3e90 EFLAGS: 00010086
ff 
ff 
RAX: 0000000000000000 RBX: 1ffff1003367684f RCX: 0000000000000002
0f 
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff88f92620
83 
RBP: ffff88019b3b4220 R08: 0000000000000000 R09: 0000000000000000
60 
R10: ffff88019c1d7be0 R11: ffff8801981e2ebb R12: 0000000000000000
19 
R13: ffffffff88f92620 R14: ffff8801981e2740 R15: 0000000000000002
00 
FS:  00000000020fe940(0000) GS:ffff8801dae00000(0000) knlGS:0000000000000000
00 
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
c3 
CR2: ffff88019b3b3e88 CR3: 00000001ca16d000 CR4: 00000000001406f0
DR0: 0000000020000000 DR1: 00000000200001c0 DR2: 0000000000000000
66 
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600
2e 
Call Trace:
0f