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: 663 Comm: syz-executor6 Not tainted 4.14.0+ #102 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 task: ffff8801d0104500 task.stack: ffff88019e9d8000 RIP: 0010:perf_trace_lock_acquire+0xc0/0x980 include/trace/events/lock.h:13 RSP: 0018:ffff88019e9df510 EFLAGS: 00010002 RAX: 0000000000000007 RBX: 1ffff10033d3beac RCX: 0000000000000000 RDX: dffffc0000000000 RSI: 0000000000000020 RDI: ffffffff85f2df20 RBP: ffff88019e9df6e8 R08: 0000000000000000 R09: 0000000000000020 R10: dffffc0000000000 R11: ffffffff8154c360 R12: ffff88019e9df6c0 R13: 0000000000000000 R14: ffffffff85f2df20 R15: 0000000000000001 FS: 0000000000000000(0000) GS:ffff8801db500000(0063) knlGS:00000000f77edb40 CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 CR2: 0000000008090000 CR3: 00000001d89fd000 CR4: 00000000001406e0 DR0: 0000000020000000 DR1: 0000000020000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600 Call Trace: trace_lock_acquire include/trace/events/lock.h:13 [inline] lock_acquire+0x394/0x580 kernel/locking/lockdep.c:4003 __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/0x480 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: 0023:0xf7ff1c79 RSP: 002b:00000000f77ed01c EFLAGS: 00000296 ORIG_RAX: 000000000000016e RAX: ffffffffffffffda RBX: 0000000000000014 RCX: 000000000000010f RDX: 0000000000000087 RSI: 0000000020c0bff0 RDI: 0000000000000010 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 Code: c7 40 1c 00 f2 f2 f2 c7 40 20 f2 f2 f2 f2 c7 40 24 00 f2 f2 f2 c7 40 28 f3 f3 f3 f3 48 8d 46 18 48 89 85 70 fe ff ff 48 c1 e8 03 <80> 3c 10 00 0f 85 da 04 00 00 49 8b 79 18 48 85 ff 0f 84 62 04 RIP: perf_trace_lock_acquire+0xc0/0x980 include/trace/events/lock.h:13 RSP: ffff88019e9df510 ---[ end trace cdf6b58d98d516c9 ]---