============================= syz-executor.0: vmalloc: allocation failure: 0 bytes, mode:0x14000c0(GFP_KERNEL), nodemask=(null) WARNING: suspicious RCU usage syz-executor.0 cpuset=syz0 mems_allowed=0-1 4.14.149 #0 Not tainted ----------------------------- CPU: 1 PID: 2177 Comm: syz-executor.0 Not tainted 4.14.149 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x138/0x197 lib/dump_stack.c:53 warn_alloc.cold+0x96/0x1af mm/page_alloc.c:3248 __vmalloc_node_range mm/vmalloc.c:1786 [inline] __vmalloc_node_range+0x3c3/0x6a0 mm/vmalloc.c:1746 net/tipc/bearer.c:177 suspicious rcu_dereference_protected() usage! __vmalloc_node mm/vmalloc.c:1815 [inline] __vmalloc_node_flags mm/vmalloc.c:1829 [inline] vmalloc+0x46/0x50 mm/vmalloc.c:1851 other info that might help us debug this: sel_write_load+0x1a0/0x1050 security/selinux/selinuxfs.c:495 rcu_scheduler_active = 2, debug_locks = 1 __vfs_write+0x105/0x6b0 fs/read_write.c:480 2 locks held by syz-executor.4/2176: #0: vfs_write+0x198/0x500 fs/read_write.c:544 ( SYSC_write fs/read_write.c:590 [inline] SyS_write+0xfd/0x230 fs/read_write.c:582 cb_lock do_syscall_64+0x1e8/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x459a59 ){++++} RSP: 002b:00007f059d5ebc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000459a59 RDX: 0000000000000000 RSI: 00000000200000c0 RDI: 0000000000000003 RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f059d5ec6d4 R13: 00000000004c9f83 R14: 00000000004e1c10 R15: 00000000ffffffff , at: [] genl_rcv+0x1a/0x40 net/netlink/genetlink.c:635 #1: (genl_mutex){+.+.}, at: [] genl_lock net/netlink/genetlink.c:33 [inline] #1: (genl_mutex){+.+.}, at: [] genl_rcv_msg+0x119/0x150 net/netlink/genetlink.c:623 stack backtrace: CPU: 0 PID: 2176 Comm: syz-executor.4 Not tainted 4.14.149 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x138/0x197 lib/dump_stack.c:53 lockdep_rcu_suspicious+0x153/0x15d kernel/locking/lockdep.c:4665 tipc_bearer_find+0x20a/0x300 net/tipc/bearer.c:177 tipc_nl_compat_link_set+0x433/0xbf0 net/tipc/netlink_compat.c:797 __tipc_nl_compat_doit net/tipc/netlink_compat.c:306 [inline] tipc_nl_compat_doit+0x1a2/0x550 net/tipc/netlink_compat.c:354 tipc_nl_compat_handle net/tipc/netlink_compat.c:1198 [inline] tipc_nl_compat_recv+0x9ec/0xb20 net/tipc/netlink_compat.c:1280 genl_family_rcv_msg+0x614/0xc30 net/netlink/genetlink.c:600 genl_rcv_msg+0xb4/0x150 net/netlink/genetlink.c:625 netlink_rcv_skb+0x14f/0x3c0 net/netlink/af_netlink.c:2432 genl_rcv+0x29/0x40 net/netlink/genetlink.c:636 netlink_unicast_kernel net/netlink/af_netlink.c:1286 [inline] netlink_unicast+0x45d/0x640 net/netlink/af_netlink.c:1312 netlink_sendmsg+0x7c4/0xc60 net/netlink/af_netlink.c:1877 sock_sendmsg_nosec net/socket.c:646 [inline] sock_sendmsg+0xce/0x110 net/socket.c:656 ___sys_sendmsg+0x70a/0x840 net/socket.c:2062 __sys_sendmsg+0xb9/0x140 net/socket.c:2096 SYSC_sendmsg net/socket.c:2107 [inline] SyS_sendmsg+0x2d/0x50 net/socket.c:2103 do_syscall_64+0x1e8/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x459a59 RSP: 002b:00007f808fc81c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000459a59 RDX: 0000000000000000 RSI: 00000000200002c0 RDI: 0000000000000003 RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f808fc826d4 R13: 00000000004c78b8 R14: 00000000004dd548 R15: 00000000ffffffff SELinux: failed to load policy SELinux: failed to load policy SELinux: failed to load policy SELinux: failed to load policy SELinux: failed to load policy SELinux: failed to load policy SELinux: failed to load policy SELinux: failed to load policy SELinux: failed to load policy SELinux: failed to load policy SELinux: failed to load policy SELinux: failed to load policy SELinux: failed to load policy