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
Modules linked in:
CPU: 1 PID: 10054 Comm: syz-executor.0 Not tainted 4.14.139 #35
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
task: ffff88808d908380 task.stack: ffff88805b800000
kobject: 'loop3' (ffff8880a4a78a20): kobject_uevent_env
RIP: 0010:__lock_acquire+0x1ba/0x4620 kernel/locking/lockdep.c:3365
RSP: 0018:ffff88805b807990 EFLAGS: 00010006
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000000003 RSI: 0000000000000000 RDI: 0000000000000001
RBP: ffff88805b807b40 R08: 0000000000000001 R09: 0000000000000001
R10: 0000000000000000 R11: ffff88808d908380 R12: 0000000000000018
R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000000
FS:  00007f5faa133700(0000) GS:ffff8880aef00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000c434d47000 CR3: 00000000840c5000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 lock_acquire+0x16f/0x430 kernel/locking/lockdep.c:3991
 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
 _raw_spin_lock_irqsave+0x95/0xcd kernel/locking/spinlock.c:160
 prepare_to_wait+0x7c/0x320 kernel/sched/wait.c:234
 nr_accept+0x1fa/0x6d0 net/netrom/af_netrom.c:796
 SYSC_accept4+0x30f/0x640 net/socket.c:1587
 SyS_accept4+0x2c/0x40 net/socket.c:1537
 do_syscall_64+0x1e8/0x640 arch/x86/entry/common.c:292
 entry_SYSCALL_64_after_hwframe+0x42/0xb7
RIP: 0033:0x459829
RSP: 002b:00007f5faa132c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000120
RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 0000000000459829
RDX: 0000000020000240 RSI: 00000000200002c0 RDI: 0000000000000006
RBP: 000000000075c118 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000800 R11: 0000000000000246 R12: 00007f5faa1336d4
R13: 00000000004bf7c8 R14: 00000000004d1230 R15: 00000000ffffffff
Code: 00 c7 40 18 00 00 00 00 48 8d 65 d8 44 89 e0 5b 41 5c 41 5d 41 5e 41 5f 5d c3 48 b8 00 00 00 00 00 fc ff df 4c 89 e2 48 c1 ea 03 <80> 3c 02 00 0f 85 ac 2e 00 00 49 81 3c 24 20 71 5d 88 0f 84 43 
RIP: __lock_acquire+0x1ba/0x4620 kernel/locking/lockdep.c:3365 RSP: ffff88805b807990
---[ end trace 98b363a6770f7224 ]---