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BUG: KASAN: slab-out-of-bounds in __swab64p include/uapi/linux/swab.h:192 [inline]
BUG: KASAN: slab-out-of-bounds in __be64_to_cpup include/uapi/linux/byteorder/little_endian.h:74 [inline]
BUG: KASAN: slab-out-of-bounds in is_tx_ready include/net/tls.h:354 [inline]
BUG: KASAN: slab-out-of-bounds in tls_write_space+0x29d/0x2d0 net/tls/tls_main.c:236
Read of size 8 at addr ffff8801bf56c070 by task udevd/6927

CPU: 1 PID: 6927 Comm: udevd Not tainted 4.19.0-rc4+ #229
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:update_stack_state+0x449/0x690 arch/x86/kernel/unwind_frame.c:218
Code: 8b 9d 30 ff ff ff 41 bf 10 00 00 00 48 c7 85 28 ff ff ff 00 00 00 00 e9 03 fd ff ff 49 8d 7e 38 48 b8 00 00 00 00 00 fc ff df <48> 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 86 01 00 00 49 8b 46 38 48
RSP: 0018:ffff8801a0c9f600 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13
RAX: dffffc0000000000 RBX: ffff8801a0c9f830 RCX: ffff8801a0c9f7e0
RDX: 1ffff10034193f10 RSI: ffff8801a0c9fb38 RDI: ffff8801a0c9f868
RBP: ffff8801a0c9f708 R08: ffff8801a0c9f868 R09: ffff8801c224c640
R10: ffffed0034193f10 R11: ffff8801a0c9f887 R12: 1ffff10034193ec8
R13: ffff8801a0c9fb38 R14: ffff8801a0c9f830 R15: ffff8801a0c9f880
 unwind_next_frame.part.7+0x1ae/0x9e0 arch/x86/kernel/unwind_frame.c:329
 unwind_next_frame+0x3e/0x50 arch/x86/kernel/unwind_frame.c:287
 __save_stack_trace+0x7d/0xf0 arch/x86/kernel/stacktrace.c:44
 save_stack_trace+0x1a/0x20 arch/x86/kernel/stacktrace.c:60
 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
 kasan_slab_alloc+0x12/0x20 mm/kasan/kasan.c:490
 slab_post_alloc_hook mm/slab.h:444 [inline]
 slab_alloc mm/slab.c:3392 [inline]
 kmem_cache_alloc+0x11b/0x730 mm/slab.c:3552
 getname_flags+0xd0/0x5a0 fs/namei.c:140
 user_path_at_empty+0x2d/0x50 fs/namei.c:2608
 user_path_at include/linux/namei.h:57 [inline]
 vfs_statx+0x129/0x210 fs/stat.c:185
 vfs_lstat include/linux/fs.h:3129 [inline]
 __do_sys_newlstat+0x8f/0x110 fs/stat.c:350
 __se_sys_newlstat fs/stat.c:344 [inline]
 __x64_sys_newlstat+0x54/0x80 fs/stat.c:344
 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x7fc163baed05
Code: f7 d8 64 89 02 83 c8 ff c3 90 90 90 90 90 90 90 90 90 90 90 90 83 ff 01 48 89 f0 77 18 48 89 c7 48 89 d6 b8 06 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 17 f3 c3 90 48 8b 05 01 51 2b 00 64 c7 00 16
RSP: 002b:00007fff1e7eb428 EFLAGS: 00000246 ORIG_RAX: 0000000000000006
RAX: ffffffffffffffda RBX: 00000000020a2250 RCX: 00007fc163baed05
RDX: 00007fff1e7eb450 RSI: 00007fff1e7eb450 RDI: 00007fff1e7ebe10
RBP: 00007fff1e7ebe10 R08: 00000000020bb2a5 R09: 00007fc163c053d0
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000020bb2a0
R13: 00000000ffffffea R14: 00007fff1e7eb570 R15: 00007fff1e7ebe1f

Allocated by task 3196:
 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
 kasan_slab_alloc+0x12/0x20 mm/kasan/kasan.c:490
 kmem_cache_alloc+0x12e/0x730 mm/slab.c:3554
 getname_flags+0xd0/0x5a0 fs/namei.c:140
 user_path_at_empty+0x2d/0x50 fs/namei.c:2608
 do_readlinkat+0x156/0x410 fs/stat.c:394
 __do_sys_readlink fs/stat.c:427 [inline]
 __se_sys_readlink fs/stat.c:424 [inline]
 __x64_sys_readlink+0x78/0xb0 fs/stat.c:424
 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x49/0xbe

Freed by task 3196:
 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]
 kmem_cache_free+0x83/0x290 mm/slab.c:3756
 putname+0xf2/0x130 fs/namei.c:261
 filename_lookup+0x39a/0x520 fs/namei.c:2357
 user_path_at_empty+0x40/0x50 fs/namei.c:2608
 do_readlinkat+0x156/0x410 fs/stat.c:394
 __do_sys_readlink fs/stat.c:427 [inline]
 __se_sys_readlink fs/stat.c:424 [inline]
 __x64_sys_readlink+0x78/0xb0 fs/stat.c:424
 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 ffff8801bf56c500
 which belongs to the cache names_cache of size 4096
The buggy address is located 1168 bytes to the left of
 4096-byte region [ffff8801bf56c500, ffff8801bf56d500)
The buggy address belongs to the page:
page:ffffea0006fd5b00 count:1 mapcount:0 mapping:ffff8801da972d80 index:0x0 compound_mapcount: 0
flags: 0x2fffc0000008100(slab|head)
raw: 02fffc0000008100 ffffea0006fdeb08 ffffea000711ea08 ffff8801da972d80
raw: 0000000000000000 ffff8801bf56c500 0000000100000001 0000000000000000
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff8801bf56bf00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
 ffff8801bf56bf80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
>ffff8801bf56c000: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
                                                             ^
 ffff8801bf56c080: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
 ffff8801bf56c100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
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