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BUG: KASAN: use-after-free in list_replace include/linux/list.h:141 [inline]
BUG: KASAN: use-after-free in list_replace_init include/linux/list.h:149 [inline]
BUG: KASAN: use-after-free in padata_parallel_worker+0x313/0x3b0 kernel/padata.c:74
Write of size 8 at addr ffff8880a80bc958 by task kworker/0:3/6896

CPU: 0 PID: 6896 Comm: kworker/0:3 Not tainted 4.14.151 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: pencrypt padata_parallel_worker
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_store8_noabort+0x17/0x20 mm/kasan/report.c:435
 list_replace include/linux/list.h:141 [inline]
 list_replace_init include/linux/list.h:149 [inline]
 padata_parallel_worker+0x313/0x3b0 kernel/padata.c:74
 process_one_work+0x863/0x1600 kernel/workqueue.c:2114
 worker_thread+0x5d9/0x1050 kernel/workqueue.c:2248
 kthread+0x319/0x430 kernel/kthread.c:232
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:404

Allocated by task 10267:
 save_stack_trace+0x16/0x20 arch/x86/kernel/stacktrace.c:59
 save_stack+0x45/0xd0 mm/kasan/kasan.c:447
 set_track mm/kasan/kasan.c:459 [inline]
 kasan_kmalloc mm/kasan/kasan.c:551 [inline]
 kasan_kmalloc+0xce/0xf0 mm/kasan/kasan.c:529
 __do_kmalloc mm/slab.c:3720 [inline]
 __kmalloc+0x15d/0x7a0 mm/slab.c:3729
 kmalloc include/linux/slab.h:493 [inline]
 kzalloc include/linux/slab.h:661 [inline]
 tls_push_record+0x10a/0x1210 net/tls/tls_sw.c:250
 tls_sw_sendpage+0x434/0xb50 net/tls/tls_sw.c:617
 inet_sendpage+0x157/0x580 net/ipv4/af_inet.c:779
 kernel_sendpage+0x92/0xf0 net/socket.c:3406
 sock_sendpage+0x8b/0xc0 net/socket.c:871
 pipe_to_sendpage+0x242/0x340 fs/splice.c:451
 splice_from_pipe_feed fs/splice.c:502 [inline]
 __splice_from_pipe+0x348/0x780 fs/splice.c:626
 splice_from_pipe+0xf0/0x150 fs/splice.c:661
 generic_splice_sendpage+0x3c/0x50 fs/splice.c:832
 do_splice_from fs/splice.c:851 [inline]
 do_splice fs/splice.c:1147 [inline]
 SYSC_splice fs/splice.c:1402 [inline]
 SyS_splice+0xd92/0x1430 fs/splice.c:1382
 do_syscall_64+0x1e8/0x640 arch/x86/entry/common.c:292
 entry_SYSCALL_64_after_hwframe+0x42/0xb7

Freed by task 10267:
 save_stack_trace+0x16/0x20 arch/x86/kernel/stacktrace.c:59
 save_stack+0x45/0xd0 mm/kasan/kasan.c:447
 set_track mm/kasan/kasan.c:459 [inline]
 kasan_slab_free+0x75/0xc0 mm/kasan/kasan.c:524
 __cache_free mm/slab.c:3496 [inline]
 kfree+0xcc/0x270 mm/slab.c:3815
 tls_push_record+0xc03/0x1210 net/tls/tls_sw.c:293
 tls_sw_sendpage+0x434/0xb50 net/tls/tls_sw.c:617
 inet_sendpage+0x157/0x580 net/ipv4/af_inet.c:779
 kernel_sendpage+0x92/0xf0 net/socket.c:3406
 sock_sendpage+0x8b/0xc0 net/socket.c:871
 pipe_to_sendpage+0x242/0x340 fs/splice.c:451
 splice_from_pipe_feed fs/splice.c:502 [inline]
 __splice_from_pipe+0x348/0x780 fs/splice.c:626
 splice_from_pipe+0xf0/0x150 fs/splice.c:661
 generic_splice_sendpage+0x3c/0x50 fs/splice.c:832
 do_splice_from fs/splice.c:851 [inline]
 do_splice fs/splice.c:1147 [inline]
 SYSC_splice fs/splice.c:1402 [inline]
 SyS_splice+0xd92/0x1430 fs/splice.c:1382
 do_syscall_64+0x1e8/0x640 arch/x86/entry/common.c:292
 entry_SYSCALL_64_after_hwframe+0x42/0xb7

The buggy address belongs to the object at ffff8880a80bc900
 which belongs to the cache kmalloc-256 of size 256
The buggy address is located 88 bytes inside of
 256-byte region [ffff8880a80bc900, ffff8880a80bca00)
The buggy address belongs to the page:
page:ffffea0002a02f00 count:1 mapcount:0 mapping:ffff8880a80bc040 index:0xffff8880a80bce00
flags: 0x1fffc0000000100(slab)
raw: 01fffc0000000100 ffff8880a80bc040 ffff8880a80bce00 000000010000000a
raw: ffffea00023bd9a0 ffffea000229da20 ffff8880aa8007c0 0000000000000000
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff8880a80bc800: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff8880a80bc880: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc
>ffff8880a80bc900: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                                                    ^
 ffff8880a80bc980: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff8880a80bca00: fc fc fc fc fc fc fc fc fb fb fb fb fb fb fb fb
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