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: 8209 Comm: syz-executor.3 Not tainted 5.9.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:__lock_acquire+0xe0e/0x5840 kernel/locking/lockdep.c:4707
Code: 00 00 3b 05 d4 88 13 0a 0f 86 97 00 00 00 89 05 c8 88 13 0a e9 8c 00 00 00 48 b8 00 00 00 00 00 fc ff df 4c 89 f2 48 c1 ea 03 <80> 3c 02 00 0f 85 82 2f 00 00 49 81 3e c0 b4 44 8b 0f 84 b0 f2 ff
RSP: 0018:ffffc9000a167988 EFLAGS: 00010006

RAX: dffffc0000000000 RBX: ffff88801d4f8000 RCX: 0000000000000000
RDX: 0000000000000003 RSI: 0000000000000000 RDI: 0000000000000018
RBP: ffffc9000a167aa0 R08: 0000000000000001 R09: 0000000000000001
R10: fffffbfff1612869 R11: 0000000000000000 R12: 0000000000000001
R13: 0000000000000000 R14: 0000000000000018 R15: 0000000000000001
FS:  00007f6180ee8700(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000563280f00eb8 CR3: 0000000020d5b000 CR4: 00000000001506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 lock_acquire kernel/locking/lockdep.c:5442 [inline]
 lock_acquire+0x233/0xa70 kernel/locking/lockdep.c:5407
 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
 _raw_spin_lock_irqsave+0x9d/0xe0 kernel/locking/spinlock.c:159
 prepare_to_wait+0x7c/0x2f0 kernel/sched/wait.c:244
 nr_accept+0x245/0x6e0 net/netrom/af_netrom.c:793
 __sys_accept4_file+0x3e4/0x680 net/socket.c:1753
 __sys_accept4+0xb9/0x120 net/socket.c:1804
 __do_sys_accept net/socket.c:1822 [inline]
 __se_sys_accept net/socket.c:1819 [inline]
 __x64_sys_accept+0x75/0xb0 net/socket.c:1819
 do_syscall_64+0x32/0x80 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x45b3c9
Code: 2d b6 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 fb b5 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007f6180ee7c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002b
RAX: ffffffffffffffda RBX: 00007f6180ee86d4 RCX: 000000000045b3c9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000004
RBP: 000000000075c070 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 0000000000000000 R14: 00000000004c15d8 R15: 000000000075c07c
Modules linked in:
---[ end trace 526ef99e26a8257b ]---
RIP: 0010:__lock_acquire+0xe0e/0x5840 kernel/locking/lockdep.c:4707
Code: 00 00 3b 05 d4 88 13 0a 0f 86 97 00 00 00 89 05 c8 88 13 0a e9 8c 00 00 00 48 b8 00 00 00 00 00 fc ff df 4c 89 f2 48 c1 ea 03 <80> 3c 02 00 0f 85 82 2f 00 00 49 81 3e c0 b4 44 8b 0f 84 b0 f2 ff
RSP: 0018:ffffc9000a167988 EFLAGS: 00010006
RAX: dffffc0000000000 RBX: ffff88801d4f8000 RCX: 0000000000000000
RDX: 0000000000000003 RSI: 0000000000000000 RDI: 0000000000000018
RBP: ffffc9000a167aa0 R08: 0000000000000001 R09: 0000000000000001
R10: fffffbfff1612869 R11: 0000000000000000 R12: 0000000000000001
R13: 0000000000000000 R14: 0000000000000018 R15: 0000000000000001
FS:  00007f6180ee8700(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000563280f00eb8 CR3: 0000000020d5b000 CR4: 00000000001506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400