random: sshd: uninitialized urandom read (32 bytes read)
random: sshd: uninitialized urandom read (32 bytes read)
random: sshd: uninitialized urandom read (32 bytes read)
TCP: request_sock_TCPv6: Possible SYN flooding on port 20002. Sending cookies.  Check SNMP counters.
==================================================================
BUG: KASAN: use-after-free in __swab64p include/uapi/linux/swab.h:192 [inline]
BUG: KASAN: use-after-free in __be64_to_cpup include/uapi/linux/byteorder/little_endian.h:74 [inline]
BUG: KASAN: use-after-free in is_tx_ready include/net/tls.h:354 [inline]
BUG: KASAN: use-after-free in tls_write_space+0x29d/0x2d0 net/tls/tls_main.c:236
Read of size 8 at addr ffff8801bc8ff870 by task swapper/1/0

CPU: 1 PID: 0 Comm: swapper/1 Not tainted 4.19.0-rc4+ #227
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x1c4/0x2b4 lib/dump_stack.c:113
 print_address_description.cold.8+0x9/0x1ff mm/kasan/report.c:256
 kasan_report_error mm/kasan/report.c:354 [inline]
 kasan_report.cold.9+0x242/0x309 mm/kasan/report.c:412
 __asan_report_load8_noabort+0x14/0x20 mm/kasan/report.c:433
 __swab64p include/uapi/linux/swab.h:192 [inline]
 __be64_to_cpup include/uapi/linux/byteorder/little_endian.h:74 [inline]
 is_tx_ready include/net/tls.h:354 [inline]
 tls_write_space+0x29d/0x2d0 net/tls/tls_main.c:236
 tcp_new_space net/ipv4/tcp_input.c:5154 [inline]
 tcp_check_space+0x53f/0x920 net/ipv4/tcp_input.c:5165
 tcp_data_snd_check net/ipv4/tcp_input.c:5175 [inline]
 tcp_rcv_established+0xde8/0x2120 net/ipv4/tcp_input.c:5656
 tcp_v6_do_rcv+0x4b3/0x13c0 net/ipv6/tcp_ipv6.c:1326
 tcp_v6_rcv+0x2f7a/0x38a0 net/ipv6/tcp_ipv6.c:1555
 ip6_input_finish+0x3fc/0x1aa0 net/ipv6/ip6_input.c:384
 NF_HOOK include/linux/netfilter.h:287 [inline]
 ip6_input+0xe9/0x600 net/ipv6/ip6_input.c:427
 dst_input include/net/dst.h:450 [inline]
 ip6_rcv_finish+0x17a/0x330 net/ipv6/ip6_input.c:76
 NF_HOOK include/linux/netfilter.h:287 [inline]
 ipv6_rcv+0x113/0x640 net/ipv6/ip6_input.c:272
 __netif_receive_skb_one_core+0x14d/0x200 net/core/dev.c:4894
 __netif_receive_skb+0x2c/0x1e0 net/core/dev.c:5004
 process_backlog+0x217/0x760 net/core/dev.c:5808
 napi_poll net/core/dev.c:6228 [inline]
 net_rx_action+0x7c5/0x1950 net/core/dev.c:6294
 __do_softirq+0x30b/0xad8 kernel/softirq.c:292
 invoke_softirq kernel/softirq.c:372 [inline]
 irq_exit+0x17f/0x1c0 kernel/softirq.c:412
 exiting_irq arch/x86/include/asm/apic.h:536 [inline]
 smp_apic_timer_interrupt+0x1cb/0x760 arch/x86/kernel/apic/apic.c:1056
 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:864
 </IRQ>
RIP: 0010:native_safe_halt+0x6/0x10 arch/x86/include/asm/irqflags.h:57
Code: e9 2c ff ff ff 48 89 c7 48 89 45 d8 e8 73 43 01 fa 48 8b 45 d8 e9 ca fe ff ff 48 89 df e8 62 43 01 fa eb 82 55 48 89 e5 fb f4 <5d> c3 0f 1f 84 00 00 00 00 00 55 48 89 e5 f4 5d c3 90 90 90 90 90
RSP: 0018:ffff8801d9b2fbf0 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff13
RAX: dffffc0000000000 RBX: 1ffff1003b365f82 RCX: 0000000000000000
RDX: 1ffffffff12e4540 RSI: 0000000000000001 RDI: ffffffff89722a00
RBP: ffff8801d9b2fbf0 R08: ffff8801d9b1a3c0 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: ffff8801d9b2fcb0
R13: ffffffff8a5182e0 R14: 0000000000000000 R15: 0000000000000001
 arch_safe_halt arch/x86/include/asm/paravirt.h:94 [inline]
 default_idle+0xbf/0x490 arch/x86/kernel/process.c:498
 arch_cpu_idle+0x10/0x20 arch/x86/kernel/process.c:489
 default_idle_call+0x6d/0x90 kernel/sched/idle.c:93
 cpuidle_idle_call kernel/sched/idle.c:153 [inline]
 do_idle+0x3db/0x5b0 kernel/sched/idle.c:262
 cpu_startup_entry+0x10c/0x120 kernel/sched/idle.c:368
 start_secondary+0x523/0x750 arch/x86/kernel/smpboot.c:271
 secondary_startup_64+0xa4/0xb0 arch/x86/kernel/head_64.S:242

Allocated by task 5342:
 save_stack+0x43/0xd0 mm/kasan/kasan.c:448
 set_track mm/kasan/kasan.c:460 [inline]
 kasan_kmalloc+0xc7/0xe0 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]
 load_elf_phdrs+0x176/0x260 fs/binfmt_elf.c:441
 load_elf_binary+0x9c3/0x5620 fs/binfmt_elf.c:838
 search_binary_handler+0x17d/0x570 fs/exec.c:1653
 exec_binprm fs/exec.c:1695 [inline]
 __do_execve_file.isra.33+0x162f/0x2540 fs/exec.c:1819
 do_execveat_common fs/exec.c:1866 [inline]
 do_execve fs/exec.c:1883 [inline]
 __do_sys_execve fs/exec.c:1964 [inline]
 __se_sys_execve fs/exec.c:1959 [inline]
 __x64_sys_execve+0x8f/0xc0 fs/exec.c:1959
 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x49/0xbe

Freed by task 5342:
 save_stack+0x43/0xd0 mm/kasan/kasan.c:448
 set_track mm/kasan/kasan.c:460 [inline]
 __kasan_slab_free+0x102/0x150 mm/kasan/kasan.c:521
 kasan_slab_free+0xe/0x10 mm/kasan/kasan.c:528
 __cache_free mm/slab.c:3498 [inline]
 kfree+0xcf/0x230 mm/slab.c:3813
 load_elf_binary+0x25a8/0x5620 fs/binfmt_elf.c:1117
 search_binary_handler+0x17d/0x570 fs/exec.c:1653
 exec_binprm fs/exec.c:1695 [inline]
 __do_execve_file.isra.33+0x162f/0x2540 fs/exec.c:1819
 do_execveat_common fs/exec.c:1866 [inline]
 do_execve fs/exec.c:1883 [inline]
 __do_sys_execve fs/exec.c:1964 [inline]
 __se_sys_execve fs/exec.c:1959 [inline]
 __x64_sys_execve+0x8f/0xc0 fs/exec.c:1959
 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 ffff8801bc8ff780
 which belongs to the cache kmalloc-512 of size 512
The buggy address is located 240 bytes inside of
 512-byte region [ffff8801bc8ff780, ffff8801bc8ff980)
The buggy address belongs to the page:
page:ffffea0006f23fc0 count:1 mapcount:0 mapping:ffff8801da800940 index:0xffff8801bc8ffa00
flags: 0x2fffc0000000100(slab)
raw: 02fffc0000000100 ffffea0006f34e88 ffffea000703a488 ffff8801da800940
raw: ffff8801bc8ffa00 ffff8801bc8ff000 0000000100000005 0000000000000000
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff8801bc8ff700: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
 ffff8801bc8ff780: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff8801bc8ff800: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                                                             ^
 ffff8801bc8ff880: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff8801bc8ff900: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================