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: 10294 Comm: syz-executor.4 Not tainted 5.3.0-rc1-next-20190726 #53
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:debug_spin_lock_before kernel/locking/spinlock_debug.c:83 [inline]
RIP: 0010:do_raw_spin_lock+0x73/0x2e0 kernel/locking/spinlock_debug.c:112
Code: ff ff ff b3 8a b5 41 c7 02 f1 f1 f1 f1 c7 42 04 04 f3 f3 f3 48 89 fa 65 48 8b 0c 25 28 00 00 00 48 89 4d d0 31 c9 48 c1 ea 03 <0f> b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 f9
RSP: 0018:ffff88807b8d7b20 EFLAGS: 00010047
RAX: dffffc0000000000 RBX: 1ffff1100f71af65 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000004
RBP: ffff88807b8d7bb0 R08: 0000000000000001 R09: 0000000000000000
R10: fffffbfff134b838 R11: ffff8880a7c763c0 R12: 0000000000000000
R13: 0000000000000286 R14: ffff88807b8d7c48 R15: ffff88807b8d7b88
FS:  00007fe24c57b700(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f3c50161db8 CR3: 0000000097606000 CR4: 00000000001406f0
Call Trace:
 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:117 [inline]
 _raw_spin_lock_irqsave+0x9d/0xcd kernel/locking/spinlock.c:159
 prepare_to_wait+0x7c/0x300 kernel/sched/wait.c:227
 nr_accept+0x23c/0x700 net/netrom/af_netrom.c:793
 __sys_accept4+0x34e/0x6a0 net/socket.c:1754
 __do_sys_accept4 net/socket.c:1789 [inline]
 __se_sys_accept4 net/socket.c:1786 [inline]
 __x64_sys_accept4+0x97/0xf0 net/socket.c:1786
 do_syscall_64+0xfa/0x760 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x459829
Code: fd b7 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 cb b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007fe24c57ac78 EFLAGS: 00000246 ORIG_RAX: 0000000000000120
RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 0000000000459829
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000004
RBP: 000000000075bfc8 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000800 R11: 0000000000000246 R12: 00007fe24c57b6d4
R13: 00000000004bf763 R14: 00000000004d1070 R15: 00000000ffffffff
Modules linked in:
---[ end trace 15be2eea2566e30b ]---
RIP: 0010:debug_spin_lock_before kernel/locking/spinlock_debug.c:83 [inline]
RIP: 0010:do_raw_spin_lock+0x73/0x2e0 kernel/locking/spinlock_debug.c:112
Code: ff ff ff b3 8a b5 41 c7 02 f1 f1 f1 f1 c7 42 04 04 f3 f3 f3 48 89 fa 65 48 8b 0c 25 28 00 00 00 48 89 4d d0 31 c9 48 c1 ea 03 <0f> b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 f9
RSP: 0018:ffff88807b8d7b20 EFLAGS: 00010047
RAX: dffffc0000000000 RBX: 1ffff1100f71af65 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000004
RBP: ffff88807b8d7bb0 R08: 0000000000000001 R09: 0000000000000000
R10: fffffbfff134b838 R11: ffff8880a7c763c0 R12: 0000000000000000
R13: 0000000000000286 R14: ffff88807b8d7c48 R15: ffff88807b8d7b88
FS:  00007fe24c57b700(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f3c50161db8 CR3: 0000000097606000 CR4: 00000000001406f0