Unknown ioctl 19298 TCP: request_sock_TCPv6: Possible SYN flooding on port 20002. Sending cookies. Check SNMP counters. Unknown ioctl 8839 Unknown ioctl 19298 ================================================================== BUG: KASAN: slab-out-of-bounds in put_unaligned_be32 include/linux/unaligned/access_ok.h:60 [inline] BUG: KASAN: slab-out-of-bounds in sha1_base_finish include/crypto/sha1_base.h:102 [inline] BUG: KASAN: slab-out-of-bounds in sha1_finup+0x44e/0x4b0 arch/x86/crypto/sha1_ssse3_glue.c:70 Write of size 4 at addr ffff88016c9f8b78 by task syz-executor0/26257 CPU: 0 PID: 26257 Comm: syz-executor0 Not tainted 4.18.0-rc2+ #117 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_store4_noabort+0x17/0x20 mm/kasan/report.c:437 put_unaligned_be32 include/linux/unaligned/access_ok.h:60 [inline] sha1_base_finish include/crypto/sha1_base.h:102 [inline] sha1_finup+0x44e/0x4b0 arch/x86/crypto/sha1_ssse3_glue.c:70 sha1_avx2_finup arch/x86/crypto/sha1_ssse3_glue.c:232 [inline] sha1_avx2_final+0x28/0x30 arch/x86/crypto/sha1_ssse3_glue.c:238 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 keyctl_dh_compute+0xc5/0x11f security/keys/dh.c:425 __do_sys_keyctl security/keys/keyctl.c:1741 [inline] __se_sys_keyctl security/keys/keyctl.c:1637 [inline] __x64_sys_keyctl+0x12a/0x3b0 security/keys/keyctl.c:1637 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x455a99 Code: 1d ba 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 eb b9 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f2e2e0b5c68 EFLAGS: 00000246 ORIG_RAX: 00000000000000fa RAX: ffffffffffffffda RBX: 00007f2e2e0b66d4 RCX: 0000000000455a99 RDX: 0000000020a53ffb RSI: 0000000020000100 RDI: 0000000000000017 RBP: 000000000072bea0 R08: 0000000020c61fc8 R09: 0000000000000000 R10: 0000000000000237 R11: 0000000000000246 R12: 00000000ffffffff R13: 00000000004bfd68 R14: 00000000004cefb8 R15: 0000000000000000 Allocated by task 26257: 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 keyctl_dh_compute+0xc5/0x11f security/keys/dh.c:425 __do_sys_keyctl security/keys/keyctl.c:1741 [inline] __se_sys_keyctl security/keys/keyctl.c:1637 [inline] __x64_sys_keyctl+0x12a/0x3b0 security/keys/keyctl.c:1637 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe Freed by task 0: 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] kfree_skb+0x19d/0x580 net/core/skbuff.c:659 erspan_xmit+0xfd/0x28d0 net/ipv4/ip_gre.c:749 __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_resolve_output+0x681/0xaf0 net/core/neighbour.c:1363 neigh_output include/net/neighbour.h:483 [inline] ip6_finish_output2+0xc95/0x2820 net/ipv6/ip6_output.c:120 ip6_finish_output+0x5fe/0xbc0 net/ipv6/ip6_output.c:154 NF_HOOK_COND include/linux/netfilter.h:276 [inline] ip6_output+0x234/0x9d0 net/ipv6/ip6_output.c:171 dst_output include/net/dst.h:444 [inline] NF_HOOK include/linux/netfilter.h:287 [inline] ndisc_send_skb+0x100d/0x1570 net/ipv6/ndisc.c:491 ndisc_send_rs+0x134/0x6e0 net/ipv6/ndisc.c:685 addrconf_rs_timer+0x314/0x690 net/ipv6/addrconf.c:3820 call_timer_fn+0x242/0x970 kernel/time/timer.c:1326 expire_timers kernel/time/timer.c:1363 [inline] __run_timers+0x7a6/0xc70 kernel/time/timer.c:1666 run_timer_softirq+0x4c/0x70 kernel/time/timer.c:1692 __do_softirq+0x2e8/0xb17 kernel/softirq.c:288 The buggy address belongs to the object at ffff88016c9f8940 which belongs to the cache kmalloc-1024 of size 1024 The buggy address is located 568 bytes inside of 1024-byte region [ffff88016c9f8940, ffff88016c9f8d40) The buggy address belongs to the page: page:ffffea0005b27e00 count:1 mapcount:0 mapping:ffff8801da800ac0 index:0xffff88016c9f84c0 compound_mapcount: 0 flags: 0x2fffc0000008100(slab|head) raw: 02fffc0000008100 ffffea000599b408 ffffea0007370e88 ffff8801da800ac0 raw: ffff88016c9f84c0 ffff88016c9f8040 0000000100000002 0000000000000000 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff88016c9f8a00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff88016c9f8a80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 >ffff88016c9f8b00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 fc ^ ffff88016c9f8b80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff88016c9f8c00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ==================================================================