================================================================== BUG: KASAN: slab-out-of-bounds in put_unaligned_le64 include/linux/unaligned/access_ok.h:50 [inline] BUG: KASAN: slab-out-of-bounds in crypto_sha3_final+0xefa/0x10a0 crypto/sha3_generic.c:235 Write of size 8 at addr ffff8801d9797d64 by task syz-executor6/6862 CPU: 0 PID: 6862 Comm: syz-executor6 Not tainted 4.18.0-rc2+ #116 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_le64 include/linux/unaligned/access_ok.h:50 [inline] crypto_sha3_final+0xefa/0x10a0 crypto/sha3_generic.c:235 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:00007f7eca7c6c68 EFLAGS: 00000246 ORIG_RAX: 00000000000000fa RAX: ffffffffffffffda RBX: 00007f7eca7c76d4 RCX: 0000000000455a99 RDX: 0000000020000300 RSI: 0000000020000100 RDI: 0000000000000017 RBP: 000000000072bea0 R08: 0000000020c61fc8 R09: 0000000000000000 R10: 0000000000000215 R11: 0000000000000246 R12: 00000000ffffffff R13: 00000000004bfd68 R14: 00000000004cefb8 R15: 0000000000000000 Allocated by task 6862: 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 19: 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 netlink_broadcast_filtered+0x6af/0x1630 net/netlink/af_netlink.c:1512 netlink_broadcast net/netlink/af_netlink.c:1534 [inline] nlmsg_multicast include/net/netlink.h:591 [inline] nlmsg_notify+0xa0/0x1a0 net/netlink/af_netlink.c:2491 rtnl_notify+0xce/0xf0 net/core/rtnetlink.c:732 inet6_rt_notify+0x204/0x2c0 net/ipv6/route.c:4966 fib6_add_rt2node+0x12b7/0x2200 net/ipv6/ip6_fib.c:1056 fib6_add+0xaae/0x14d0 net/ipv6/ip6_fib.c:1282 __ip6_ins_rt+0x54/0x80 net/ipv6/route.c:1157 ip6_ins_rt+0xf8/0x160 net/ipv6/route.c:1167 __ipv6_ifa_notify+0x745/0xa20 net/ipv6/addrconf.c:5681 ipv6_ifa_notify+0xff/0x210 net/ipv6/addrconf.c:5715 addrconf_dad_completed+0xeb/0xbf0 net/ipv6/addrconf.c:4099 addrconf_dad_begin net/ipv6/addrconf.c:3905 [inline] addrconf_dad_work+0x876/0x1310 net/ipv6/addrconf.c:4007 process_one_work+0xc73/0x1ba0 kernel/workqueue.c:2153 worker_thread+0x189/0x13c0 kernel/workqueue.c:2296 kthread+0x345/0x410 kernel/kthread.c:240 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:412 The buggy address belongs to the object at ffff8801d9797b40 which belongs to the cache kmalloc-1024 of size 1024 The buggy address is located 548 bytes inside of 1024-byte region [ffff8801d9797b40, ffff8801d9797f40) The buggy address belongs to the page: page:ffffea000765e580 count:1 mapcount:0 mapping:ffff8801da800ac0 index:0x0 compound_mapcount: 0 flags: 0x2fffc0000008100(slab|head) raw: 02fffc0000008100 ffffea000765b108 ffffea0006b04f88 ffff8801da800ac0 raw: 0000000000000000 ffff8801d9796040 0000000100000007 0000000000000000 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff8801d9797c00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff8801d9797c80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 >ffff8801d9797d00: 00 00 00 00 00 00 00 00 00 00 00 00 fc fc fc fc ^ ffff8801d9797d80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff8801d9797e00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ==================================================================