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(1574356902.100:36): avc: denied { map } for pid=6929 comm="syz-executor283" path="/root/syz-executor283383355" 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 ffff88809e0c2c10 by task syz-executor283/6929 CPU: 0 PID: 6929 Comm: syz-executor283 Not tainted 4.14.155-syzkaller #0 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+0x142/0x197 lib/dump_stack.c:58 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_3c8dfff8b3098609+0x3b0/0x1000 Allocated by task 0: (stack is not available) Freed by task 0: (stack is not available) The buggy address belongs to the object at ffff88809e0c2b80 which belongs to the cache skbuff_head_cache of size 232 The buggy address is located 144 bytes inside of 232-byte region [ffff88809e0c2b80, ffff88809e0c2c68) The buggy address belongs to the page: page:ffffea0002783080 count:1 mapcount:0 mapping:ffff88809e0c2040 index:0x0 flags: 0x1fffc0000000100(slab) raw: 01fffc0000000100 ffff88809e0c2040 0000000000000000 000000010000000c raw: ffffea00024b78a0 ffff8880a9e1bf48 ffff8880a9e19a80 0000000000000000 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff88809e0c2b00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff88809e0c2b80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc >ffff88809e0c2c00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ^ ffff88809e0c2c80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff88809e0c2d00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ==================================================================