R13: 00007ffc50e8467f R14: 00007faf5fa079c0 R15: 0000000000000000 FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 ------------[ cut here ]------------ CPU: 0 PID: 7103 Comm: syz-executor693 Not tainted 4.14.113 #3 kernel BUG at net/core/skbuff.c:2644! Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 invalid opcode: 0000 [#1] PREEMPT SMP KASAN Call Trace: Modules linked in: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x138/0x19c lib/dump_stack.c:53 CPU: 1 PID: 0 Comm: swapper/1 Not tainted 4.14.113 #3 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold+0x10f/0x159 lib/fault-inject.c:149 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 task: ffff8880a9d1c340 task.stack: ffff8880a9d28000 should_failslab+0xdb/0x130 mm/failslab.c:32 RIP: 0010:skb_copy_and_csum_bits+0x65c/0x740 net/core/skbuff.c:2644 slab_pre_alloc_hook mm/slab.h:421 [inline] slab_alloc mm/slab.c:3376 [inline] kmem_cache_alloc+0x2d9/0x780 mm/slab.c:3550 RSP: 0018:ffff8880aef072d8 EFLAGS: 00010206 kmem_cache_zalloc include/linux/slab.h:651 [inline] taskstats_tgid_alloc kernel/taskstats.c:577 [inline] taskstats_exit+0x619/0xbd0 kernel/taskstats.c:610 RAX: ffff8880a9d1c340 RBX: 0000000000000000 RCX: ffff888094e5e34c RDX: 0000000000000100 RSI: ffff888091dca968 RDI: ffff88808f8f3dc8 RBP: ffff8880aef07360 R08: 0000000000000000 R09: 0000000000000000 R10: 000000000000003c R11: ffff888091dcabe3 R12: 000000008c410295 do_exit+0x368/0x2c10 kernel/exit.c:859 R13: 0000000000000000 R14: 000000000000003c R15: ffff88808f8f3dc0 FS: 0000000000000000(0000) GS:ffff8880aef00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 do_group_exit+0x111/0x330 kernel/exit.c:977 CR2: 00007faf5fa06db8 CR3: 000000009e0a5000 CR4: 00000000001406e0 get_signal+0x348/0x1a80 kernel/signal.c:2407 Call Trace: do_signal+0x86/0x1980 arch/x86/kernel/signal.c:809 icmp_glue_bits+0x7f/0x1d0 net/ipv4/icmp.c:357 __ip_append_data.isra.0+0x1570/0x20c0 net/ipv4/ip_output.c:1020 exit_to_usermode_loop+0x15c/0x220 arch/x86/entry/common.c:159 ip_append_data.part.0+0xde/0x150 net/ipv4/ip_output.c:1173 prepare_exit_to_usermode arch/x86/entry/common.c:198 [inline] syscall_return_slowpath arch/x86/entry/common.c:267 [inline] do_syscall_64+0x4a9/0x630 arch/x86/entry/common.c:294 ip_append_data+0x5b/0x80 net/ipv4/ip_output.c:1162 entry_SYSCALL_64_after_hwframe+0x42/0xb7 icmp_push_reply+0x189/0x500 net/ipv4/icmp.c:375 RIP: 0033:0x448109 __icmp_send+0x979/0x11f0 net/ipv4/icmp.c:742 RSP: 002b:00007faf5fa06cb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000133 RAX: ffffffffffffffe0 RBX: 00007faf5fa06cc0 RCX: 0000000000448109 RDX: 000000000000003c RSI: 0000000020004f40 RDI: 0000000000000004 RBP: 0000000000000006 R08: 0000000000000001 R09: 0000000000000032 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000006ddc2c icmp_send include/net/icmp.h:47 [inline] ip_fragment net/ipv4/ip_output.c:554 [inline] ip_fragment.constprop.0+0x1b6/0x200 net/ipv4/ip_output.c:541 R13: 00007ffc50e8467f R14: 00007faf5fa079c0 R15: 0000000000000000 ip_finish_output+0x7c8/0xc70 net/ipv4/ip_output.c:315 NF_HOOK_COND include/linux/netfilter.h:239 [inline] ip_output+0x1e6/0x590 net/ipv4/ip_output.c:405 dst_output include/net/dst.h:459 [inline] ip_local_out+0x9c/0x180 net/ipv4/ip_output.c:124 ip_queue_xmit+0x7d7/0x1b10 net/ipv4/ip_output.c:504 __tcp_transmit_skb+0x1744/0x3000 net/ipv4/tcp_output.c:1130 tcp_transmit_skb net/ipv4/tcp_output.c:1146 [inline] __tcp_retransmit_skb+0x53b/0x1bb0 net/ipv4/tcp_output.c:2915 tcp_retransmit_skb+0x2e/0x230 net/ipv4/tcp_output.c:2929 tcp_retransmit_timer+0x825/0x2580 net/ipv4/tcp_timer.c:493 tcp_write_timer_handler+0x482/0x7e0 net/ipv4/tcp_timer.c:578 tcp_write_timer+0xd8/0x180 net/ipv4/tcp_timer.c:596 call_timer_fn+0x164/0x680 kernel/time/timer.c:1279 expire_timers kernel/time/timer.c:1318 [inline] __run_timers kernel/time/timer.c:1634 [inline] __run_timers kernel/time/timer.c:1602 [inline] run_timer_softirq+0x5b4/0x1570 kernel/time/timer.c:1647 __do_softirq+0x24e/0x9ae kernel/softirq.c:288 invoke_softirq kernel/softirq.c:368 [inline] irq_exit+0x160/0x1b0 kernel/softirq.c:409 exiting_irq arch/x86/include/asm/apic.h:648 [inline] smp_apic_timer_interrupt+0x156/0x600 arch/x86/kernel/apic/apic.c:1064 apic_timer_interrupt+0x8e/0xa0 arch/x86/entry/entry_64.S:787 RIP: 0010:native_safe_halt+0x2/0x10 arch/x86/include/asm/irqflags.h:58 RSP: 0018:ffff8880a9d2fe70 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff10 RAX: 1ffffffff0ee2968 RBX: ffff8880a9d1c340 RCX: 0000000000000000 RDX: dffffc0000000000 RSI: 0000000000000001 RDI: ffff8880a9d1cbbc RBP: ffff8880a9d2fe98 R08: 1ffffffff1049901 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: ffffffff87714b30 R13: 0000000000000000 R14: 0000000000000000 R15: ffff8880a9d1c340 arch_cpu_idle+0x10/0x20 arch/x86/kernel/process.c:555 default_idle_call+0x36/0x90 kernel/sched/idle.c:98 cpuidle_idle_call kernel/sched/idle.c:156 [inline] do_idle+0x262/0x3d0 kernel/sched/idle.c:246 cpu_startup_entry+0x1b/0x20 kernel/sched/idle.c:351 start_secondary+0x362/0x4d0 arch/x86/kernel/smpboot.c:272 secondary_startup_64+0xa5/0xb0 arch/x86/kernel/head_64.S:240 Code: d4 49 01 c7 44 89 75 bc 4c 89 7d c0 e9 75 fa ff ff 44 8b 65 d4 e9 61 ff ff ff e8 e0 d1 8d fc 0f 0b e9 94 fe ff ff e8 d4 d1 8d fc <0f> 0b e8 ed 76 b7 fc e9 7e fd ff ff 48 8b bd 78 ff ff ff e8 dc RIP: skb_copy_and_csum_bits+0x65c/0x740 net/core/skbuff.c:2644 RSP: ffff8880aef072d8 ---[ end trace 6f021a7cc2fdba49 ]---