syz-executor245 (8210) used greatest stack depth: 23176 bytes left ip_tables: iptables: counters copy to user failed while replacing table ip_tables: iptables: counters copy to user failed while replacing table watchdog: BUG: soft lockup - CPU#1 stuck for 22s! [ksoftirqd/1:18] Modules linked in: irq event stamp: 4331513 hardirqs last enabled at (4331512): [] slab_alloc_node mm/slab.c:3327 [inline] hardirqs last enabled at (4331512): [] kmem_cache_alloc_node_trace+0x2f0/0x400 mm/slab.c:3659 hardirqs last disabled at (4331513): [] apic_timer_interrupt+0x8e/0xa0 arch/x86/entry/entry_64.S:793 softirqs last enabled at (608060): [] __do_softirq+0x68b/0x9ff kernel/softirq.c:314 softirqs last disabled at (608065): [] run_ksoftirqd+0x50/0x1a0 kernel/softirq.c:670 CPU: 1 PID: 18 Comm: ksoftirqd/1 Not tainted 4.14.286-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/29/2022 task: ffff8880b54a64c0 task.stack: ffff8880b54b0000 RIP: 0010:deref_stack_reg+0x28/0x1a0 arch/x86/kernel/unwind_orc.c:285 RSP: 0018:ffff8880b54b61e0 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff10 RAX: dffffc0000000000 RBX: 1ffff11016a96c52 RCX: ffffffff8acde3ce RDX: ffff8880b54b6360 RSI: ffff8880b54b74d8 RDI: ffff8880b54b6318 RBP: ffff8880b54b74d8 R08: ffffffff8acde3d2 R09: ffffffff8acde3d3 R10: 0000000000112a23 R11: 0000000000000001 R12: ffff8880b54b6318 R13: ffff8880b54b6360 R14: ffff8880b54b6368 R15: ffff8880b54b6318 FS: 0000000000000000(0000) GS:ffff8880ba500000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020618000 CR3: 000000009d772000 CR4: 00000000003406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: unwind_next_frame+0xc98/0x17d0 arch/x86/kernel/unwind_orc.c:425 __save_stack_trace+0x90/0x160 arch/x86/kernel/stacktrace.c:44 save_stack mm/kasan/kasan.c:447 [inline] set_track mm/kasan/kasan.c:459 [inline] kasan_kmalloc+0xeb/0x160 mm/kasan/kasan.c:551 slab_post_alloc_hook mm/slab.h:442 [inline] slab_alloc_node mm/slab.c:3333 [inline] kmem_cache_alloc_node_trace+0x13d/0x400 mm/slab.c:3659 __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 skb_segment+0x677/0x2e60 net/core/skbuff.c:3683 sctp_gso_segment net/sctp/offload.c:76 [inline] sctp_gso_segment+0x204/0x810 net/sctp/offload.c:43 inet_gso_segment+0x487/0x10f0 net/ipv4/af_inet.c:1272 inet_gso_segment+0x487/0x10f0 net/ipv4/af_inet.c:1272 skb_mac_gso_segment+0x240/0x4c0 net/core/dev.c:2745 __skb_gso_segment+0x302/0x600 net/core/dev.c:2818 skb_gso_segment include/linux/netdevice.h:4005 [inline] validate_xmit_skb+0x49c/0x9f0 net/core/dev.c:3071 validate_xmit_skb_list+0xaf/0x110 net/core/dev.c:3122 sch_direct_xmit+0x2dc/0x500 net/sched/sch_generic.c:181 qdisc_restart net/sched/sch_generic.c:249 [inline] __qdisc_run+0x25d/0xe00 net/sched/sch_generic.c:257 __dev_xmit_skb net/core/dev.c:3231 [inline] __dev_queue_xmit+0x13ac/0x2480 net/core/dev.c:3489 neigh_hh_output include/net/neighbour.h:490 [inline] neigh_output include/net/neighbour.h:498 [inline] ip_finish_output2+0x9db/0x1340 net/ipv4/ip_output.c:237 ip_finish_output+0x37c/0xc50 net/ipv4/ip_output.c:325 NF_HOOK_COND include/linux/netfilter.h:239 [inline] ip_output+0x1cd/0x510 net/ipv4/ip_output.c:413 dst_output include/net/dst.h:470 [inline] ip_local_out+0x93/0x170 net/ipv4/ip_output.c:125 iptunnel_xmit+0x5cc/0x950 net/ipv4/ip_tunnel_core.c:91 ip_tunnel_xmit+0xedc/0x33e0 net/ipv4/ip_tunnel.c:799 sit_tunnel_xmit__ net/ipv6/sit.c:1006 [inline] sit_tunnel_xmit+0x1ab/0x2130 net/ipv6/sit.c:1019 __netdev_start_xmit include/linux/netdevice.h:4054 [inline] netdev_start_xmit include/linux/netdevice.h:4063 [inline] xmit_one net/core/dev.c:3005 [inline] dev_hard_start_xmit+0x188/0x890 net/core/dev.c:3021 __dev_queue_xmit+0x1d7f/0x2480 net/core/dev.c:3521 neigh_output include/net/neighbour.h:500 [inline] ip_finish_output2+0xba6/0x1340 net/ipv4/ip_output.c:237 ip_finish_output+0x37c/0xc50 net/ipv4/ip_output.c:325 NF_HOOK_COND include/linux/netfilter.h:239 [inline] ip_output+0x1cd/0x510 net/ipv4/ip_output.c:413 dst_output include/net/dst.h:470 [inline] ip_local_out+0x93/0x170 net/ipv4/ip_output.c:125 nf_dup_ipv4 net/ipv4/netfilter/nf_dup_ipv4.c:91 [inline] nf_dup_ipv4+0x4bb/0x680 net/ipv4/netfilter/nf_dup_ipv4.c:53 tee_tg4+0x109/0x160 net/netfilter/xt_TEE.c:36 ipt_do_table+0xa9d/0x16f0 net/ipv4/netfilter/ip_tables.c:353 iptable_filter_hook+0x172/0x1e0 net/ipv4/netfilter/iptable_filter.c:47 nf_hook_entry_hookfn include/linux/netfilter.h:108 [inline] nf_hook_slow+0xb0/0x1a0 net/netfilter/core.c:468 nf_hook include/linux/netfilter.h:205 [inline] NF_HOOK include/linux/netfilter.h:248 [inline] ip_local_deliver+0x28c/0x460 net/ipv4/ip_input.c:257 dst_input include/net/dst.h:476 [inline] ip_rcv_finish+0x6e3/0x19f0 net/ipv4/ip_input.c:396 NF_HOOK include/linux/netfilter.h:250 [inline] ip_rcv+0x8a7/0xf10 net/ipv4/ip_input.c:493 __netif_receive_skb_core+0x15ee/0x2a30 net/core/dev.c:4474 __netif_receive_skb+0x27/0x1a0 net/core/dev.c:4512 process_backlog+0x218/0x6f0 net/core/dev.c:5195 napi_poll net/core/dev.c:5604 [inline] net_rx_action+0x466/0xfd0 net/core/dev.c:5670 __do_softirq+0x24d/0x9ff kernel/softirq.c:288 run_ksoftirqd+0x50/0x1a0 kernel/softirq.c:670 smpboot_thread_fn+0x5c1/0x920 kernel/smpboot.c:164 kthread+0x30d/0x420 kernel/kthread.c:232 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:404 Code: 00 00 00 48 b8 00 00 00 00 00 fc ff df 41 56 41 55 49 89 d5 41 54 49 89 fc 55 48 89 f5 53 48 83 ec 48 48 c7 44 24 08 b3 8a b5 41 <48> 8d 5c 24 08 48 c7 44 24 10 68 5d b5 88 48 c1 eb 03 48 c7 44 ---------------- Code disassembly (best guess), 1 bytes skipped: 0: 00 00 add %al,(%rax) 2: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 9: fc ff df c: 41 56 push %r14 e: 41 55 push %r13 10: 49 89 d5 mov %rdx,%r13 13: 41 54 push %r12 15: 49 89 fc mov %rdi,%r12 18: 55 push %rbp 19: 48 89 f5 mov %rsi,%rbp 1c: 53 push %rbx 1d: 48 83 ec 48 sub $0x48,%rsp 21: 48 c7 44 24 08 b3 8a movq $0x41b58ab3,0x8(%rsp) 28: b5 41 * 2a: 48 8d 5c 24 08 lea 0x8(%rsp),%rbx <-- trapping instruction 2f: 48 c7 44 24 10 68 5d movq $0xffffffff88b55d68,0x10(%rsp) 36: b5 88 38: 48 c1 eb 03 shr $0x3,%rbx 3c: 48 rex.W 3d: c7 .byte 0xc7 3e: 44 rex.R