R13: 00000000004f5a92 R14: 00000000004cf118 R15: 0000000000000003 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 CPU: 1 PID: 16046 Comm: syz-executor.3 Not tainted 5.1.0-rc2+ #82 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:tipc_mcast_filter_msg+0x70/0x17a0 net/tipc/bcast.c:772 Code: 4c 39 e0 b8 00 00 00 00 4c 0f 44 e0 e8 d9 fa a1 fa 48 b8 00 00 00 00 00 fc ff df 49 8d bc 24 c8 00 00 00 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 43 13 00 00 49 8b 9c 24 c8 00 00 00 48 b8 00 00 RSP: 0018:ffff888065f6f958 EFLAGS: 00010202 RAX: dffffc0000000000 RBX: ffff888065f6fab8 RCX: ffffc9000c43e000 RDX: 0000000000000019 RSI: ffffffff86ce76a7 RDI: 00000000000000c8 RBP: ffff888065f6f9c0 R08: ffff8880639f8200 R09: ffffed1015d25bc8 R10: ffffed1015d25bc7 R11: ffff8880ae92de3b R12: 0000000000000000 R13: 0000000000000009 R14: ffff888096454100 R15: ffff88806a072080 FS: 00007f25a5fcb700(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000000073c000 CR3: 000000008605e000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: tipc_sk_filter_rcv+0x1ed3/0x34b0 net/tipc/socket.c:2169 tipc_sk_backlog_rcv+0xeb/0x1e0 net/tipc/socket.c:2218 sk_backlog_rcv include/net/sock.h:945 [inline] __release_sock+0x12e/0x3a0 net/core/sock.c:2413 release_sock+0x59/0x1c0 net/core/sock.c:2929 tipc_release+0x9ea/0x14d0 net/tipc/socket.c:592 __sock_release+0xd3/0x2b0 net/socket.c:599 sock_close+0x1b/0x30 net/socket.c:1247 __fput+0x2e5/0x8d0 fs/file_table.c:278 ____fput+0x16/0x20 fs/file_table.c:309 task_work_run+0x14a/0x1c0 kernel/task_work.c:113 tracehook_notify_resume include/linux/tracehook.h:188 [inline] exit_to_usermode_loop+0x273/0x2c0 arch/x86/entry/common.c:166 prepare_exit_to_usermode arch/x86/entry/common.c:197 [inline] syscall_return_slowpath arch/x86/entry/common.c:268 [inline] do_syscall_64+0x52d/0x610 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x4582f9 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:00007f25a5fcac78 EFLAGS: 00000246 ORIG_RAX: 0000000000000003 RAX: 0000000000000000 RBX: 00007f25a5fcac90 RCX: 00000000004582f9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000005 RBP: 000000000073bf00 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f25a5fcb6d4 R13: 00000000004f5a92 R14: 00000000004cf118 R15: 0000000000000003 Modules linked in: ---[ end trace 8f7c3692423ee473 ]--- RIP: 0010:tipc_mcast_filter_msg+0x70/0x17a0 net/tipc/bcast.c:772 Code: 4c 39 e0 b8 00 00 00 00 4c 0f 44 e0 e8 d9 fa a1 fa 48 b8 00 00 00 00 00 fc ff df 49 8d bc 24 c8 00 00 00 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 43 13 00 00 49 8b 9c 24 c8 00 00 00 48 b8 00 00 RSP: 0018:ffff888065f6f958 EFLAGS: 00010202 RAX: dffffc0000000000 RBX: ffff888065f6fab8 RCX: ffffc9000c43e000 RDX: 0000000000000019 RSI: ffffffff86ce76a7 RDI: 00000000000000c8 RBP: ffff888065f6f9c0 R08: ffff8880639f8200 R09: ffffed1015d25bc8 R10: ffffed1015d25bc7 R11: ffff8880ae92de3b R12: 0000000000000000 R13: 0000000000000009 R14: ffff888096454100 R15: ffff88806a072080 FS: 00007f25a5fcb700(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000000152cfd0 CR3: 000000008605e000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600