R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 Subscriber rejected, no memory kasan: CONFIG_KASAN_INLINE enabled kasan: GPF could be caused by NULL-ptr deref or user memory access general protection fault: 0000 [#1] SMP KASAN Dumping ftrace buffer: (ftrace buffer empty) Modules linked in: CPU: 1 PID: 3092 Comm: syz-executor0 Not tainted 4.15.0-rc1+ #114 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 task: 00000000b922df06 task.stack: 00000000f204d590 RIP: 0010:__lock_acquire+0xd55/0x47f0 kernel/locking/lockdep.c:3378 RSP: 0018:ffff8801cbba7350 EFLAGS: 00010002 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: 0000000000000004 RSI: 0000000000000000 RDI: ffffffff85ecb440 RBP: ffff8801cbba76d8 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000000 R11: ffffffff87489d60 R12: ffff8801cc82a100 R13: 0000000000000000 R14: 0000000000000001 R15: 0000000000000020 FS: 0000000000000000(0000) GS:ffff8801db500000(0063) knlGS:0000000008cd8900 CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 CR2: 000000009bc20000 CR3: 00000001cb859000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: lock_acquire+0x1d5/0x580 kernel/locking/lockdep.c:4004 __raw_spin_lock_bh include/linux/spinlock_api_smp.h:135 [inline] _raw_spin_lock_bh+0x31/0x40 kernel/locking/spinlock.c:175 spin_lock_bh include/linux/spinlock.h:320 [inline] tipc_subscrb_subscrp_delete+0x8f/0x470 net/tipc/subscr.c:201 tipc_subscrb_delete net/tipc/subscr.c:238 [inline] tipc_subscrb_release_cb+0x17/0x30 net/tipc/subscr.c:316 tipc_close_conn+0x171/0x270 net/tipc/server.c:204 tipc_topsrv_kern_subscr+0x724/0x810 net/tipc/server.c:514 tipc_group_create+0x702/0x9c0 net/tipc/group.c:184 tipc_sk_join net/tipc/socket.c:2747 [inline] tipc_setsockopt+0x249/0xc10 net/tipc/socket.c:2861 C_SYSC_setsockopt net/compat.c:406 [inline] compat_SyS_setsockopt+0x2e7/0x410 net/compat.c:386 do_syscall_32_irqs_on arch/x86/entry/common.c:327 [inline] do_fast_syscall_32+0x3ee/0xf9d arch/x86/entry/common.c:389 entry_SYSENTER_compat+0x51/0x60 arch/x86/entry/entry_64_compat.S:125 RIP: 0023:0xf7fd8c79 RSP: 002b:00000000ffe3ea6c EFLAGS: 00000296 ORIG_RAX: 000000000000016e RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 000000000000010f RDX: 0000000000000087 RSI: 00000000206fb000 RDI: 0000000000000010 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 Code: e9 03 f3 48 ab 48 81 c4 60 03 00 00 44 89 f8 5b 41 5c 41 5d 41 5e 41 5f 5d c3 4c 89 fa 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 <80> 3c 02 00 0f 85 cf 38 00 00 49 81 3f 00 58 8b 86 41 be 00 00 RIP: __lock_acquire+0xd55/0x47f0 kernel/locking/lockdep.c:3378 RSP: ffff8801cbba7350 ---[ end trace 1ff020b845084a89 ]---