general protection fault, probably for non-canonical address 0xdffffc0000000003: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000018-0x000000000000001f]
CPU: 0 PID: 7800 Comm: syz-executor.0 Not tainted 5.7.0-rc6-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:__lock_acquire+0xe65/0x3bf0 kernel/locking/lockdep.c:4225
Code: 00 00 3b 05 0d 0b 54 08 0f 86 e2 00 00 00 89 05 01 0b 54 08 e9 d7 00 00 00 48 b8 00 00 00 00 00 fc ff df 4c 89 ea 48 c1 ea 03 <80> 3c 02 00 0f 85 70 24 00 00 49 81 7d 00 40 ac 7c 89 0f 84 56 f2
RSP: 0018:ffff888085407990 EFLAGS: 00010006
RAX: dffffc0000000000 RBX: ffff8880a0fc0340 RCX: 0000000000000000
RDX: 0000000000000003 RSI: 0000000000000000 RDI: 0000000000000018
RBP: ffff888085407ab0 R08: 0000000000000001 R09: 0000000000000001
R10: ffffffff89469f07 R11: fffffbfff128d3e0 R12: 0000000000000000
R13: 0000000000000018 R14: 0000000000000000 R15: 0000000000000000
FS:  00007fc1d864b700(0000) GS:ffff8880aec00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 000000008bc51000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 lock_acquire+0x209/0x9e0 kernel/locking/lockdep.c:4934
 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
 _raw_spin_lock_irqsave+0x99/0xd0 kernel/locking/spinlock.c:159
 prepare_to_wait+0x90/0x310 kernel/sched/wait.c:244
 nr_accept+0x1b9/0x6b0 net/netrom/af_netrom.c:771
 __sys_accept4_file+0x37f/0x600 net/socket.c:1759
 __sys_accept4+0xa2/0x100 net/socket.c:1810
 __do_sys_accept net/socket.c:1829 [inline]
 __se_sys_accept net/socket.c:1826 [inline]
 __x64_sys_accept+0x70/0xb0 net/socket.c:1826
 do_syscall_64+0xd0/0x630 arch/x86/entry/common.c:295
 entry_SYSCALL_64_after_hwframe+0x49/0xb3
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:00007fc1d864ac78 EFLAGS: 00000246 ORIG_RAX: 000000000000002b
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000458079
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000004
RBP: 000000000073bfa0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fc1d864b6d4
R13: 00000000004bdd8f R14: 00000000004ce0c0 R15: 00000000ffffffff
Modules linked in:
---[ end trace d3e3b379f050488d ]---
RIP: 0010:__lock_acquire+0xe65/0x3bf0 kernel/locking/lockdep.c:4225
Code: 00 00 3b 05 0d 0b 54 08 0f 86 e2 00 00 00 89 05 01 0b 54 08 e9 d7 00 00 00 48 b8 00 00 00 00 00 fc ff df 4c 89 ea 48 c1 ea 03 <80> 3c 02 00 0f 85 70 24 00 00 49 81 7d 00 40 ac 7c 89 0f 84 56 f2
RSP: 0018:ffff888085407990 EFLAGS: 00010006
RAX: dffffc0000000000 RBX: ffff8880a0fc0340 RCX: 0000000000000000
RDX: 0000000000000003 RSI: 0000000000000000 RDI: 0000000000000018
RBP: ffff888085407ab0 R08: 0000000000000001 R09: 0000000000000001
R10: ffffffff89469f07 R11: fffffbfff128d3e0 R12: 0000000000000000
R13: 0000000000000018 R14: 0000000000000000 R15: 0000000000000000
FS:  00007fc1d864b700(0000) GS:ffff8880aec00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 000000008bc51000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400