FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 1 kasan: CONFIG_KASAN_INLINE enabled kasan: GPF could be caused by NULL-ptr deref or user memory access CPU: 0 PID: 16133 Comm: syz-executor4 Not tainted 4.20.0-rc1-next-20181109+ #110 general protection fault: 0000 [#1] PREEMPT SMP KASAN Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 CPU: 1 PID: 16125 Comm: syz-executor1 Not tainted 4.20.0-rc1-next-20181109+ #110 Call Trace: Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x244/0x39d lib/dump_stack.c:113 RIP: 0010:kvm_pv_send_ipi+0x364/0xdd0 arch/x86/kvm/lapic.c:579 Code: 45 84 ed 0f 84 da 07 00 00 e8 38 75 66 00 48 8d 4b 14 48 b8 00 00 00 00 00 fc ff df 48 89 ca 48 89 8d 70 fe ff ff 48 c1 ea 03 <0f> b6 14 02 48 89 c8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 f5 RSP: 0018:ffff880174d8eee0 EFLAGS: 00010203 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000014 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold.4+0xa/0x17 lib/fault-inject.c:149 RDX: 0000000000000002 RSI: ffffffff81193378 RDI: 0000000000000005 RBP: ffff880174d8f080 R08: ffff8801bd412040 R09: ffffed003b5e5b67 R10: ffffed003b5e5b67 R11: ffff8801daf2db3b R12: ffff880174d8f058 R13: 0000000000000001 R14: 0000000000000000 R15: ffff880174d8efd8 FS: 00007f5bbbd85700(0000) GS:ffff8801daf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000000 CR3: 00000001d2f25000 CR4: 00000000001426e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __should_failslab+0x124/0x180 mm/failslab.c:32 should_failslab+0x9/0x14 mm/slab_common.c:1578 slab_pre_alloc_hook mm/slab.h:423 [inline] slab_alloc mm/slab.c:3378 [inline] kmem_cache_alloc_trace+0x2d7/0x750 mm/slab.c:3618 kmalloc include/linux/slab.h:546 [inline] kzalloc include/linux/slab.h:741 [inline] tcp_sendmsg_fastopen net/ipv4/tcp.c:1144 [inline] tcp_sendmsg_locked+0x29ad/0x3fa0 net/ipv4/tcp.c:1208 kvm_emulate_hypercall+0x5e2/0xf20 arch/x86/kvm/x86.c:6999 handle_vmcall+0x15/0x20 arch/x86/kvm/vmx.c:7510 vmx_handle_exit+0x338/0x4630 arch/x86/kvm/vmx.c:10600 tcp_sendmsg+0x2f/0x50 net/ipv4/tcp.c:1443 inet_sendmsg+0x19c/0x690 net/ipv4/af_inet.c:798 sock_sendmsg_nosec net/socket.c:622 [inline] sock_sendmsg+0xd5/0x120 net/socket.c:632 __sys_sendto+0x3d7/0x670 net/socket.c:1789 vcpu_enter_guest arch/x86/kvm/x86.c:7809 [inline] vcpu_run arch/x86/kvm/x86.c:7872 [inline] kvm_arch_vcpu_ioctl_run+0x3e15/0x72b0 arch/x86/kvm/x86.c:8072 __do_sys_sendto net/socket.c:1801 [inline] __se_sys_sendto net/socket.c:1797 [inline] __x64_sys_sendto+0xe1/0x1a0 net/socket.c:1797 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe kvm_vcpu_ioctl+0x5c8/0x1150 arch/x86/kvm/../../../virt/kvm/kvm_main.c:2596 RIP: 0033:0x457569 Code: fd b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 cb b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f234952ac78 EFLAGS: 00000246 ORIG_RAX: 000000000000002c RAX: ffffffffffffffda RBX: 00007f234952ac90 RCX: 0000000000457569 RDX: fffffffffffffffa RSI: 0000000020000100 RDI: 0000000000000003 RBP: 000000000072bf00 R08: 0000000020b63fe4 R09: 000000000000001c R10: 0000000020000001 R11: 0000000000000246 R12: 00007f234952b6d4 R13: 00000000004c3c1d R14: 00000000004d5e98 R15: 0000000000000004 vfs_ioctl fs/ioctl.c:46 [inline] file_ioctl fs/ioctl.c:509 [inline] do_vfs_ioctl+0x1de/0x1790 fs/ioctl.c:696 ksys_ioctl+0xa9/0xd0 fs/ioctl.c:713 __do_sys_ioctl fs/ioctl.c:720 [inline] __se_sys_ioctl fs/ioctl.c:718 [inline] __x64_sys_ioctl+0x73/0xb0 fs/ioctl.c:718 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x457569 Code: fd b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 cb b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f5bbbd84c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000457569 RDX: 0000000000000000 RSI: 000000000000ae80 RDI: 0000000000000005 RBP: 000000000072bf00 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f5bbbd856d4 R13: 00000000004c028e R14: 00000000004d06d8 R15: 00000000ffffffff Modules linked in: ---[ end trace 2232da102a324623 ]--- kobject: 'loop4' (00000000063475cf): kobject_uevent_env RIP: 0010:kvm_pv_send_ipi+0x364/0xdd0 arch/x86/kvm/lapic.c:579 kobject: 'loop4' (00000000063475cf): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop0' (00000000590eb0eb): kobject_uevent_env Code: 45 84 ed 0f 84 da 07 00 00 e8 38 75 66 00 48 8d 4b 14 48 b8 00 00 00 00 00 fc ff df 48 89 ca 48 89 8d 70 fe ff ff 48 c1 ea 03 <0f> b6 14 02 48 89 c8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 f5 kobject: 'loop0' (00000000590eb0eb): fill_kobj_path: path = '/devices/virtual/block/loop0' netlink: 'syz-executor3': attribute type 1 has an invalid length. FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 RSP: 0018:ffff880174d8eee0 EFLAGS: 00010203 netlink: 4 bytes leftover after parsing attributes in process `syz-executor3'. kobject: 'loop3' (00000000f583d8a4): kobject_uevent_env RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000014 CPU: 1 PID: 16151 Comm: syz-executor4 Tainted: G D 4.20.0-rc1-next-20181109+ #110 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 kobject: 'kvm' (00000000d389a9d4): kobject_uevent_env Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x244/0x39d lib/dump_stack.c:113 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold.4+0xa/0x17 lib/fault-inject.c:149 RDX: 0000000000000002 RSI: ffffffff81193378 RDI: 0000000000000005 kobject: 'kvm' (00000000d389a9d4): fill_kobj_path: path = '/devices/virtual/misc/kvm' __should_failslab+0x124/0x180 mm/failslab.c:32 should_failslab+0x9/0x14 mm/slab_common.c:1578 slab_pre_alloc_hook mm/slab.h:423 [inline] slab_alloc_node mm/slab.c:3299 [inline] kmem_cache_alloc_node+0x26e/0x730 mm/slab.c:3642 __alloc_skb+0x114/0x770 net/core/skbuff.c:193 RBP: ffff880174d8f080 R08: ffff8801bd412040 R09: ffffed003b5e5b67 alloc_skb_fclone include/linux/skbuff.h:1039 [inline] sk_stream_alloc_skb+0x13c/0x960 net/ipv4/tcp.c:874 R10: ffffed003b5e5b67 R11: ffff8801daf2db3b R12: ffff880174d8f058 tcp_connect+0x12e8/0x46f0 net/ipv4/tcp_output.c:3497 R13: 0000000000000001 R14: 0000000000000000 R15: ffff880174d8efd8 FS: 00007f5bbbd85700(0000) GS:ffff8801dae00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f1f5a1ccc88 CR3: 00000001d2f25000 CR4: 00000000001426f0 tcp_v6_connect+0x1c0f/0x29b0 net/ipv6/tcp_ipv6.c:321 kobject: 'kvm' (00000000d389a9d4): kobject_uevent_env DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 kobject: 'kvm' (00000000d389a9d4): kobject_uevent_env DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 kobject: 'kvm' (00000000d389a9d4): kobject_uevent_env __inet_stream_connect+0x992/0x1150 net/ipv4/af_inet.c:655 kobject: 'kvm' (00000000d389a9d4): fill_kobj_path: path = '/devices/virtual/misc/kvm'