netlink: 12 bytes leftover after parsing attributes in process `syz-executor.4'. ip_tables: iptables: counters copy to user failed while replacing table IPVS: ftp: loaded support on port[0] = 21 overlayfs: fs on 'file0' does not support file handles, falling back to index=off. ============================= WARNING: suspicious RCU usage 4.14.278-syzkaller #0 Not tainted ----------------------------- net/netfilter/nf_queue.c:244 suspicious rcu_dereference_check() usage! other info that might help us debug this: rcu_scheduler_active = 2, debug_locks = 1 3 locks held by syz-executor.3/9505: #0: (sk_lock-AF_TIPC){+.+.}, at: [] lock_sock include/net/sock.h:1473 [inline] #0: (sk_lock-AF_TIPC){+.+.}, at: [] __tipc_sendstream+0x435/0x8c0 net/tipc/socket.c:1077 #1: (rcu_callback){....}, at: [] __rcu_reclaim kernel/rcu/rcu.h:185 [inline] #1: (rcu_callback){....}, at: [] rcu_do_batch kernel/rcu/tree.c:2699 [inline] #1: (rcu_callback){....}, at: [] invoke_rcu_callbacks kernel/rcu/tree.c:2962 [inline] #1: (rcu_callback){....}, at: [] __rcu_process_callbacks kernel/rcu/tree.c:2929 [inline] #1: (rcu_callback){....}, at: [] rcu_process_callbacks+0x84e/0x1180 kernel/rcu/tree.c:2946 #2: (&(&inst->lock)->rlock){+.-.}, at: [] spin_lock_bh include/linux/spinlock.h:322 [inline] #2: (&(&inst->lock)->rlock){+.-.}, at: [] nfqnl_flush+0x2f/0x2a0 net/netfilter/nfnetlink_queue.c:232 stack backtrace: CPU: 1 PID: 9505 Comm: syz-executor.3 Not tainted 4.14.278-syzkaller #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+0x1b2/0x281 lib/dump_stack.c:58 nf_reinject+0x56e/0x700 net/netfilter/nf_queue.c:244 nfqnl_flush+0x1ab/0x2a0 net/netfilter/nfnetlink_queue.c:237 instance_destroy_rcu+0x19/0x30 net/netfilter/nfnetlink_queue.c:171 __rcu_reclaim kernel/rcu/rcu.h:195 [inline] rcu_do_batch kernel/rcu/tree.c:2699 [inline] invoke_rcu_callbacks kernel/rcu/tree.c:2962 [inline] __rcu_process_callbacks kernel/rcu/tree.c:2929 [inline] rcu_process_callbacks+0x780/0x1180 kernel/rcu/tree.c:2946 __do_softirq+0x24d/0x9ff kernel/softirq.c:288 invoke_softirq kernel/softirq.c:368 [inline] irq_exit+0x193/0x240 kernel/softirq.c:409 exiting_irq arch/x86/include/asm/apic.h:638 [inline] smp_apic_timer_interrupt+0x141/0x5e0 arch/x86/kernel/apic/apic.c:1106 apic_timer_interrupt+0x93/0xa0 arch/x86/entry/entry_64.S:793 RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:779 [inline] RIP: 0010:slab_alloc_node mm/slab.c:3327 [inline] RIP: 0010:kmem_cache_alloc_node_trace+0x304/0x400 mm/slab.c:3659 RSP: 0018:ffff88805ff4f800 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff10 RAX: 0000000000000007 RBX: 00000000014102c0 RCX: 1ffff1100bfe7d85 RDX: 0000000000000000 RSI: ffff88805ff3ec08 RDI: 0000000000000282 RBP: ffff88813fe65680 R08: ffffffff8b9bf9f0 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: ffff88805df810c0 R13: 00000000014102c0 R14: 0000000000010400 R15: ffff88813fe65680 __do_kmalloc_node mm/slab.c:3681 [inline] __kmalloc_node_track_caller+0x38/0x70 mm/slab.c:3696 __kmalloc_reserve net/core/skbuff.c:137 [inline] __alloc_skb+0x96/0x510 net/core/skbuff.c:205 alloc_skb_fclone include/linux/skbuff.h:1022 [inline] tipc_buf_acquire+0x28/0xf0 net/tipc/msg.c:66 tipc_msg_build+0xcf/0xec0 net/tipc/msg.c:260 __tipc_sendstream+0x4d5/0x8c0 net/tipc/socket.c:1085 tipc_sendstream+0x4c/0x70 net/tipc/socket.c:1042 sock_sendmsg_nosec net/socket.c:646 [inline] sock_sendmsg+0xb5/0x100 net/socket.c:656 ___sys_sendmsg+0x6c8/0x800 net/socket.c:2062 __sys_sendmsg+0xa3/0x120 net/socket.c:2096 SYSC_sendmsg net/socket.c:2107 [inline] SyS_sendmsg+0x27/0x40 net/socket.c:2103 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x46/0xbb RIP: 0033:0x7f476f04b0e9 RSP: 002b:00007f476d9c0168 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007f476f15df60 RCX: 00007f476f04b0e9 RDX: 0000000000000000 RSI: 0000000020000240 RDI: 0000000000000005 RBP: 00007f476f0a508d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffd1ddb0d3f R14: 00007f476d9c0300 R15: 0000000000022000 overlayfs: fs on './file0' does not support file handles, falling back to index=off. netlink: 12 bytes leftover after parsing attributes in process `syz-executor.4'. ip_tables: iptables: counters copy to user failed while replacing table netlink: 12 bytes leftover after parsing attributes in process `syz-executor.4'. overlayfs: fs on 'file0' does not support file handles, falling back to index=off. overlayfs: fs on './file0' does not support file handles, falling back to index=off. ip_tables: iptables: counters copy to user failed while replacing table overlayfs: fs on 'file0' does not support file handles, falling back to index=off. netlink: 12 bytes leftover after parsing attributes in process `syz-executor.4'. overlayfs: fs on './file0' does not support file handles, falling back to index=off. ip_tables: iptables: counters copy to user failed while replacing table overlayfs: fs on 'file0' does not support file handles, falling back to index=off. overlayfs: fs on 'file0' does not support file handles, falling back to index=off. overlayfs: fs on 'file0' does not support file handles, falling back to index=off. overlayfs: fs on 'file0' does not support file handles, falling back to index=off. overlayfs: fs on './file0' does not support file handles, falling back to index=off. overlayfs: fs on './file0' does not support file handles, falling back to index=off. overlayfs: fs on './file0' does not support file handles, falling back to index=off. overlayfs: fs on './file0' does not support file handles, falling back to index=off. overlayfs: fs on 'file0' does not support file handles, falling back to index=off. overlayfs: fs on 'file0' does not support file handles, falling back to index=off. overlayfs: fs on 'file0' does not support file handles, falling back to index=off. overlayfs: fs on './file0' does not support file handles, falling back to index=off. overlayfs: fs on './file0' does not support file handles, falling back to index=off. overlayfs: fs on './file0' does not support file handles, falling back to index=off. overlayfs: fs on 'file0' does not support file handles, falling back to index=off. overlayfs: fs on './file0' does not support file handles, falling back to index=off. overlayfs: fs on 'file0' does not support file handles, falling back to index=off. overlayfs: fs on './file0' does not support file handles, falling back to index=off. overlayfs: fs on 'file0' does not support file handles, falling back to index=off. overlayfs: fs on 'file0' does not support file handles, falling back to index=off. overlayfs: fs on './file0' does not support file handles, falling back to index=off. overlayfs: fs on './file0' does not support file handles, falling back to index=off. overlayfs: fs on 'file0' does not support file handles, falling back to index=off. overlayfs: fs on 'file0' does not support file handles, falling back to index=off. overlayfs: fs on './file0' does not support file handles, falling back to index=off. overlayfs: fs on './file0' does not support file handles, falling back to index=off. netlink: 12 bytes leftover after parsing attributes in process `syz-executor.5'. overlayfs: fs on 'file0' does not support file handles, falling back to index=off. ip_tables: iptables: counters copy to user failed while replacing table overlayfs: fs on './file0' does not support file handles, falling back to index=off. netlink: 12 bytes leftover after parsing attributes in process `syz-executor.5'. ip_tables: iptables: counters copy to user failed while replacing table overlayfs: fs on 'file0' does not support file handles, falling back to index=off. overlayfs: fs on 'file0' does not support file handles, falling back to index=off. overlayfs: fs on './file0' does not support file handles, falling back to index=off. overlayfs: fs on './file0' does not support file handles, falling back to index=off. x_tables: ip6_tables: icmp6 match: only valid for protocol 58 netlink: 12 bytes leftover after parsing attributes in process `syz-executor.5'. ip_tables: iptables: counters copy to user failed while replacing table overlayfs: fs on 'file0' does not support file handles, falling back to index=off. overlayfs: fs on './file0' does not support file handles, falling back to index=off. netlink: 24 bytes leftover after parsing attributes in process `syz-executor.5'. overlayfs: fs on 'file0' does not support file handles, falling back to index=off. sch_tbf: burst 127 is lower than device batadv_slave_1 mtu (1514) ! overlayfs: fs on './file0' does not support file handles, falling back to index=off. sch_tbf: burst 127 is lower than device batadv_slave_1 mtu (1514) ! overlayfs: fs on 'file0' does not support file handles, falling back to index=off. overlayfs: fs on './file0' does not support file handles, falling back to index=off. netlink: 24 bytes leftover after parsing attributes in process `syz-executor.5'. sch_tbf: burst 127 is lower than device hsr_slave_0 mtu (1514) ! sch_tbf: burst 127 is lower than device hsr_slave_0 mtu (1514) ! netlink: 24 bytes leftover after parsing attributes in process `syz-executor.5'. sch_tbf: burst 127 is lower than device hsr_slave_1 mtu (1514) ! sch_tbf: burst 127 is lower than device hsr_slave_1 mtu (1514) ! netlink: 24 bytes leftover after parsing attributes in process `syz-executor.5'. sch_tbf: burst 127 is lower than device veth1_virt_wifi mtu (1514) ! sch_tbf: burst 127 is lower than device veth1_virt_wifi mtu (1514) ! capability: warning: `syz-executor.0' uses deprecated v2 capabilities in a way that may be insecure L1TF CPU bug present and SMT on, data leak possible. See CVE-2018-3646 and https://www.kernel.org/doc/html/latest/admin-guide/hw-vuln/l1tf.html for details. BTRFS: device fsid f90cac8b-044b-4fa8-8bee-4b8d3da88dc2 devid 1 transid 7 /dev/loop1 BTRFS info (device loop1): disk space caching is enabled BTRFS info (device loop1): has skinny extents device team1 entered promiscuous mode BTRFS info (device loop5): disk space caching is enabled BTRFS info (device loop5): has skinny extents