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Interface gre0 may have been left with an inconsistent configuration, please check. ================================================================== BUG: KASAN: slab-out-of-bounds in put_unaligned_be64 include/linux/unaligned/access_ok.h:65 [inline] BUG: KASAN: slab-out-of-bounds in sha512_base_finish include/crypto/sha512_base.h:127 [inline] BUG: KASAN: slab-out-of-bounds in sha512_final+0x34a/0x3e0 crypto/sha512_generic.c:153 Write of size 8 at addr ffff8801bbd45a80 by task syz-executor2/6924 CPU: 1 PID: 6924 Comm: syz-executor2 Not tainted 4.18.0-rc2+ #21 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x1c9/0x2b4 lib/dump_stack.c:113 print_address_description+0x6c/0x20b mm/kasan/report.c:256 kasan_report_error mm/kasan/report.c:354 [inline] kasan_report.cold.7+0x242/0x2fe mm/kasan/report.c:412 __asan_report_store8_noabort+0x17/0x20 mm/kasan/report.c:438 put_unaligned_be64 include/linux/unaligned/access_ok.h:65 [inline] sha512_base_finish include/crypto/sha512_base.h:127 [inline] sha512_final+0x34a/0x3e0 crypto/sha512_generic.c:153 crypto_shash_final+0x104/0x260 crypto/shash.c:152 kdf_ctr security/keys/dh.c:186 [inline] keyctl_dh_compute_kdf security/keys/dh.c:217 [inline] __keyctl_dh_compute+0x1198/0x1be0 security/keys/dh.c:389 compat_keyctl_dh_compute+0x2d0/0x400 security/keys/compat_dh.c:39 __do_compat_sys_keyctl security/keys/compat.c:136 [inline] __se_compat_sys_keyctl security/keys/compat.c:59 [inline] __ia32_compat_sys_keyctl+0x137/0x3b0 security/keys/compat.c:59 do_syscall_32_irqs_on arch/x86/entry/common.c:326 [inline] do_fast_syscall_32+0x34d/0xfb2 arch/x86/entry/common.c:397 entry_SYSENTER_compat+0x70/0x7f arch/x86/entry/entry_64_compat.S:139 RIP: 0023:0xf7f3dcb9 Code: 55 08 8b 88 64 cd ff ff 8b 98 68 cd ff ff 89 c8 85 d2 74 02 89 0a 5b 5d c3 8b 04 24 c3 8b 1c 24 c3 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 eb 0d 90 90 90 90 90 90 90 90 90 90 90 90 RSP: 002b:00000000f5f390ac EFLAGS: 00000282 ORIG_RAX: 0000000000000120 RAX: ffffffffffffffda RBX: 0000000000000017 RCX: 0000000020000080 RDX: 00000000200004c0 RSI: 00000000000003ff RDI: 0000000020000600 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000296 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 Allocated by task 6924: save_stack+0x43/0xd0 mm/kasan/kasan.c:448 set_track mm/kasan/kasan.c:460 [inline] kasan_kmalloc+0xc4/0xe0 mm/kasan/kasan.c:553 __do_kmalloc mm/slab.c:3718 [inline] __kmalloc+0x14e/0x760 mm/slab.c:3727 kmalloc include/linux/slab.h:518 [inline] keyctl_dh_compute_kdf security/keys/dh.c:211 [inline] __keyctl_dh_compute+0x1000/0x1be0 security/keys/dh.c:389 compat_keyctl_dh_compute+0x2d0/0x400 security/keys/compat_dh.c:39 __do_compat_sys_keyctl security/keys/compat.c:136 [inline] __se_compat_sys_keyctl security/keys/compat.c:59 [inline] __ia32_compat_sys_keyctl+0x137/0x3b0 security/keys/compat.c:59 do_syscall_32_irqs_on arch/x86/entry/common.c:326 [inline] do_fast_syscall_32+0x34d/0xfb2 arch/x86/entry/common.c:397 entry_SYSENTER_compat+0x70/0x7f arch/x86/entry/entry_64_compat.S:139 Freed by task 4523: save_stack+0x43/0xd0 mm/kasan/kasan.c:448 set_track mm/kasan/kasan.c:460 [inline] __kasan_slab_free+0x11a/0x170 mm/kasan/kasan.c:521 kasan_slab_free+0xe/0x10 mm/kasan/kasan.c:528 __cache_free mm/slab.c:3498 [inline] kfree+0xd9/0x260 mm/slab.c:3813 skb_free_head+0x99/0xc0 net/core/skbuff.c:550 skb_release_data+0x6a4/0x880 net/core/skbuff.c:570 skb_release_all+0x4a/0x60 net/core/skbuff.c:627 __kfree_skb net/core/skbuff.c:641 [inline] consume_skb+0x193/0x560 net/core/skbuff.c:701 __dev_kfree_skb_any+0xa7/0xd0 net/core/dev.c:2578 dev_consume_skb_any include/linux/netdevice.h:3358 [inline] free_old_xmit_skbs+0xc1/0x200 drivers/net/virtio_net.c:1283 start_xmit+0x1c2/0x1850 drivers/net/virtio_net.c:1450 __netdev_start_xmit include/linux/netdevice.h:4128 [inline] netdev_start_xmit include/linux/netdevice.h:4137 [inline] xmit_one net/core/dev.c:3034 [inline] dev_hard_start_xmit+0x26c/0xc30 net/core/dev.c:3050 sch_direct_xmit+0x486/0x1140 net/sched/sch_generic.c:327 qdisc_restart net/sched/sch_generic.c:390 [inline] __qdisc_run+0x619/0x19f0 net/sched/sch_generic.c:398 qdisc_run include/net/pkt_sched.h:118 [inline] __dev_xmit_skb net/core/dev.c:3229 [inline] __dev_queue_xmit+0x1419/0x3910 net/core/dev.c:3537 dev_queue_xmit+0x17/0x20 net/core/dev.c:3602 neigh_hh_output include/net/neighbour.h:473 [inline] neigh_output include/net/neighbour.h:481 [inline] ip_finish_output2+0x1063/0x1860 net/ipv4/ip_output.c:229 ip_finish_output+0x841/0xfa0 net/ipv4/ip_output.c:317 NF_HOOK_COND include/linux/netfilter.h:276 [inline] ip_output+0x223/0x880 net/ipv4/ip_output.c:405 dst_output include/net/dst.h:444 [inline] ip_local_out+0xc5/0x1b0 net/ipv4/ip_output.c:124 ip_queue_xmit+0x9df/0x1f80 net/ipv4/ip_output.c:504 tcp_transmit_skb+0x1bf9/0x3f10 net/ipv4/tcp_output.c:1168 tcp_send_ack+0x4a1/0x690 net/ipv4/tcp_output.c:3611 tcp_cleanup_rbuf+0x411/0x750 net/ipv4/tcp.c:1578 tcp_recvmsg+0xaf3/0x34d0 net/ipv4/tcp.c:2146 inet_recvmsg+0x181/0x6d0 net/ipv4/af_inet.c:830 sock_recvmsg_nosec net/socket.c:818 [inline] sock_recvmsg+0xd0/0x110 net/socket.c:825 sock_read_iter+0x39c/0x570 net/socket.c:902 call_read_iter include/linux/fs.h:1789 [inline] new_sync_read fs/read_write.c:406 [inline] __vfs_read+0x6d8/0xa80 fs/read_write.c:418 vfs_read+0x17f/0x3d0 fs/read_write.c:452 ksys_read+0x101/0x260 fs/read_write.c:578 __do_sys_read fs/read_write.c:588 [inline] __se_sys_read fs/read_write.c:586 [inline] __x64_sys_read+0x73/0xb0 fs/read_write.c:586 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe The buggy address belongs to the object at ffff8801bbd45680 which belongs to the cache kmalloc-1024 of size 1024 The buggy address is located 0 bytes to the right of 1024-byte region [ffff8801bbd45680, ffff8801bbd45a80) The buggy address belongs to the page: page:ffffea0006ef5100 count:1 mapcount:0 mapping:ffff8801da800ac0 index:0x0 compound_mapcount: 0 flags: 0x2fffc0000008100(slab|head) raw: 02fffc0000008100 ffffea000715c608 ffff8801da801848 ffff8801da800ac0 raw: 0000000000000000 ffff8801bbd44000 0000000100000007 0000000000000000 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff8801bbd45980: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff8801bbd45a00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 >ffff8801bbd45a80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ^ ffff8801bbd45b00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff8801bbd45b80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ==================================================================