kasan: GPF could be caused by NULL-ptr deref or user memory access general protection fault: 0000 [#1] PREEMPT SMP KASAN CPU: 0 PID: 19060 Comm: syz-executor.0 Not tainted 5.1.0-rc2+ #80 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:ffff88807a88f958 EFLAGS: 00010202 RAX: dffffc0000000000 RBX: ffff88807a88fab8 RCX: ffffffff86d6d854 RDX: 0000000000000019 RSI: ffffffff86ce76a7 RDI: 00000000000000c8 RBP: ffff88807a88f9c0 R08: ffff88809041c6c0 R09: ffffed1015d25bc8 R10: ffffed1015d25bc7 R11: ffff8880ae92de3b R12: 0000000000000000 R13: 0000000000000009 R14: ffff888086210200 R15: ffff88806d114c80 FS: 0000000001916940(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000738020 CR3: 0000000099e53000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600 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: 0033:0x4120b1 Code: 75 14 b8 03 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 e4 1a 00 00 c3 48 83 ec 08 e8 0a fc ff ff 48 89 04 24 b8 03 00 00 00 0f 05 <48> 8b 3c 24 48 89 c2 e8 53 fc ff ff 48 89 d0 48 83 c4 08 48 3d 01 RSP: 002b:00007ffdc82c6c20 EFLAGS: 00000293 ORIG_RAX: 0000000000000003 RAX: 0000000000000000 RBX: 0000000000000009 RCX: 00000000004120b1 RDX: 0000000000000000 RSI: 0000000000740e00 RDI: 0000000000000008 RBP: 000000000073bfa0 R08: 0000000000740df8 R09: 0000000000207405 R10: 00007ffdc82c6ce0 R11: 0000000000000293 R12: ffffffffffffffff R13: 0000000000000001 R14: 0000000000000003 R15: 000000000073bfac Modules linked in: ---[ end trace cf148b266febdc8d ]--- 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:ffff88807a88f958 EFLAGS: 00010202 RAX: dffffc0000000000 RBX: ffff88807a88fab8 RCX: ffffffff86d6d854 RDX: 0000000000000019 RSI: ffffffff86ce76a7 RDI: 00000000000000c8 RBP: ffff88807a88f9c0 R08: ffff88809041c6c0 R09: ffffed1015d25bc8 R10: ffffed1015d25bc7 R11: ffff8880ae92de3b R12: 0000000000000000 R13: 0000000000000009 R14: ffff888086210200 R15: ffff88806d114c80 FS: 0000000001916940(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffe9a1a7c8c CR3: 0000000099e53000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600