kasan: CONFIG_KASAN_INLINE enabled
kasan: GPF could be caused by NULL-ptr deref or user memory access
general protection fault: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 7633 Comm: syz-executor.1 Not tainted 5.0.0-next-20190306 #4
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:__lock_acquire+0xbef/0x3fb0 kernel/locking/lockdep.c:3564
Code: 00 0f 85 a5 1f 00 00 48 81 c4 10 01 00 00 5b 41 5c 41 5d 41 5e 41 5f 5d c3 48 b8 00 00 00 00 00 fc ff df 4c 89 ea 48 c1 ea 03 <80> 3c 02 00 0f 85 4a 21 00 00 49 81 7d 00 e0 43 9c 89 0f 84 cf f4
RSP: 0018:ffff888098897a08 EFLAGS: 00010006
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000000003 RSI: 0000000000000000 RDI: 0000000000000001
RBP: ffff888098897b40 R08: 0000000000000001 R09: 0000000000000001
R10: 0000000000000000 R11: ffff8880a4f2c0c0 R12: 0000000000000000
R13: 0000000000000018 R14: 0000000000000001 R15: 0000000000000001
FS:  00007fccb7e7f700(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f778133a1c4 CR3: 00000000a54aa000 CR4: 00000000001406f0
Call Trace:
 lock_acquire+0x16f/0x3f0 kernel/locking/lockdep.c:4202
 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
 _raw_spin_lock_irqsave+0x95/0xcd kernel/locking/spinlock.c:152
 prepare_to_wait+0x7c/0x300 kernel/sched/wait.c:230
 nr_accept+0x239/0x790 net/netrom/af_netrom.c:796
 __sys_accept4+0x350/0x6a0 net/socket.c:1611
 __do_sys_accept net/socket.c:1652 [inline]
 __se_sys_accept net/socket.c:1649 [inline]
 __x64_sys_accept+0x75/0xb0 net/socket.c:1649
 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x458079
Code: ad b8 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 7b b8 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007fccb7e7ec78 EFLAGS: 00000246 ORIG_RAX: 000000000000002b
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000458079
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000004
RBP: 000000000073c0e0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fccb7e7f6d4
R13: 00000000004bdd8f R14: 00000000004ce0c0 R15: 00000000ffffffff
Modules linked in:
---[ end trace 77ac73128e6b4c3e ]---
RIP: 0010:__lock_acquire+0xbef/0x3fb0 kernel/locking/lockdep.c:3564
Code: 00 0f 85 a5 1f 00 00 48 81 c4 10 01 00 00 5b 41 5c 41 5d 41 5e 41 5f 5d c3 48 b8 00 00 00 00 00 fc ff df 4c 89 ea 48 c1 ea 03 <80> 3c 02 00 0f 85 4a 21 00 00 49 81 7d 00 e0 43 9c 89 0f 84 cf f4
RSP: 0018:ffff888098897a08 EFLAGS: 00010006
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000000003 RSI: 0000000000000000 RDI: 0000000000000001
RBP: ffff888098897b40 R08: 0000000000000001 R09: 0000000000000001
R10: 0000000000000000 R11: ffff8880a4f2c0c0 R12: 0000000000000000
R13: 0000000000000018 R14: 0000000000000001 R15: 0000000000000001
FS:  00007fccb7e7f700(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f778133a1c4 CR3: 00000000a54aa000 CR4: 00000000001406f0