random: sshd: uninitialized urandom read (32 bytes read) random: sshd: uninitialized urandom read (32 bytes read) random: sshd: uninitialized urandom read (32 bytes read) audit: type=1400 audit(1567208115.325:36): avc: denied { map } for pid=6982 comm="syz-executor826" path="/root/syz-executor826874174" dev="sda1" ino=16484 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1 ================================================================== BUG: KASAN: slab-out-of-bounds in ____bpf_clone_redirect net/core/filter.c:1768 [inline] BUG: KASAN: slab-out-of-bounds in bpf_clone_redirect+0x2de/0x2f0 net/core/filter.c:1759 Read of size 8 at addr ffff88807f24b2b0 by task syz-executor826/6982 CPU: 0 PID: 6982 Comm: syz-executor826 Not tainted 4.14.141 #37 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x138/0x197 lib/dump_stack.c:53 print_address_description.cold+0x7c/0x1dc mm/kasan/report.c:252 kasan_report_error mm/kasan/report.c:351 [inline] kasan_report mm/kasan/report.c:409 [inline] kasan_report.cold+0xa9/0x2af mm/kasan/report.c:393 __asan_report_load8_noabort+0x14/0x20 mm/kasan/report.c:430 ____bpf_clone_redirect net/core/filter.c:1768 [inline] bpf_clone_redirect+0x2de/0x2f0 net/core/filter.c:1759 bpf_prog_7a8598871316c8c3+0x651/0x1000 Allocated by task 0: (stack is not available) Freed by task 0: (stack is not available) The buggy address belongs to the object at ffff88807f24b200 which belongs to the cache skbuff_head_cache of size 232 The buggy address is located 176 bytes inside of 232-byte region [ffff88807f24b200, ffff88807f24b2e8) The buggy address belongs to the page: page:ffffea0001fc92c0 count:1 mapcount:0 mapping:ffff88807f24b0c0 index:0x0 flags: 0x1fffc0000000100(slab) raw: 01fffc0000000100 ffff88807f24b0c0 0000000000000000 000000010000000c raw: ffffea000287e4e0 ffffea000269a920 ffff8880a9e82d80 0000000000000000 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff88807f24b180: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff88807f24b200: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc >ffff88807f24b280: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ^ ffff88807f24b300: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff88807f24b380: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ==================================================================