EXT4-fs (loop2): Can't read superblock on 2nd try
EXT4-fs (loop2): Can't read superblock on 2nd try
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BUG: KASAN: use-after-free in tls_write_space+0x2b2/0x310 net/tls/tls_main.c:220
Read of size 1 at addr ffff8880a53dcba0 by task ksoftirqd/1/18

CPU: 1 PID: 18 Comm: ksoftirqd/1 Not tainted 4.19.52 #24
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x172/0x1f0 lib/dump_stack.c:113
 print_address_description.cold+0x7c/0x20d mm/kasan/report.c:256
 kasan_report_error mm/kasan/report.c:354 [inline]
 kasan_report mm/kasan/report.c:412 [inline]
 kasan_report.cold+0x8c/0x2ba mm/kasan/report.c:396
 __asan_report_load1_noabort+0x14/0x20 mm/kasan/report.c:430
 tls_write_space+0x2b2/0x310 net/tls/tls_main.c:220
 tcp_new_space net/ipv4/tcp_input.c:5155 [inline]
 tcp_check_space+0x430/0x720 net/ipv4/tcp_input.c:5166
 tcp_data_snd_check net/ipv4/tcp_input.c:5176 [inline]
 tcp_rcv_state_process+0xf3f/0x4e68 net/ipv4/tcp_input.c:6259
 tcp_v6_do_rcv+0x88b/0x13c0 net/ipv6/tcp_ipv6.c:1351
 tcp_v6_rcv+0x2b95/0x3510 net/ipv6/tcp_ipv6.c:1555
 ip6_input_finish+0x36f/0x1810 net/ipv6/ip6_input.c:383
 NF_HOOK include/linux/netfilter.h:289 [inline]
 NF_HOOK include/linux/netfilter.h:283 [inline]
 ip6_input+0xe4/0x3f0 net/ipv6/ip6_input.c:426
 dst_input include/net/dst.h:450 [inline]
 ip6_rcv_finish+0x1de/0x310 net/ipv6/ip6_input.c:76
 NF_HOOK include/linux/netfilter.h:289 [inline]
 NF_HOOK include/linux/netfilter.h:283 [inline]
 ipv6_rcv+0x119/0x430 net/ipv6/ip6_input.c:271
 __netif_receive_skb_one_core+0x113/0x1a0 net/core/dev.c:4932
 __netif_receive_skb+0x2c/0x1d0 net/core/dev.c:5044
 process_backlog+0x206/0x750 net/core/dev.c:5855
 napi_poll net/core/dev.c:6278 [inline]
 net_rx_action+0x4f5/0x1070 net/core/dev.c:6344
 __do_softirq+0x25c/0x921 kernel/softirq.c:292
 run_ksoftirqd kernel/softirq.c:653 [inline]
 run_ksoftirqd+0x8e/0x110 kernel/softirq.c:645
 smpboot_thread_fn+0x6a3/0xa30 kernel/smpboot.c:164
 kthread+0x354/0x420 kernel/kthread.c:246
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415

Allocated by task 13873:
 save_stack+0x45/0xd0 mm/kasan/kasan.c:448
 set_track mm/kasan/kasan.c:460 [inline]
 kasan_kmalloc mm/kasan/kasan.c:553 [inline]
 kasan_kmalloc+0xce/0xf0 mm/kasan/kasan.c:531
 kmem_cache_alloc_trace+0x152/0x760 mm/slab.c:3625
 kmalloc include/linux/slab.h:515 [inline]
 kzalloc include/linux/slab.h:709 [inline]
 create_ctx+0x46/0x1f0 net/tls/tls_main.c:550
 tls_init+0x158/0x7a0 net/tls/tls_main.c:683
 tcp_set_ulp+0x216/0x5f0 net/ipv4/tcp_ulp.c:155
 do_tcp_setsockopt.isra.0+0x321/0x2320 net/ipv4/tcp.c:2750
 tcp_setsockopt+0xbe/0xe0 net/ipv4/tcp.c:3064
 sock_common_setsockopt+0x94/0xd0 net/core/sock.c:3044
 __sys_setsockopt+0x17a/0x280 net/socket.c:1901
 __do_sys_setsockopt net/socket.c:1912 [inline]
 __se_sys_setsockopt net/socket.c:1909 [inline]
 __x64_sys_setsockopt+0xbe/0x150 net/socket.c:1909
 do_syscall_64+0xfd/0x620 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe

Freed by task 13870:
 save_stack+0x45/0xd0 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:3503 [inline]
 kfree+0xcf/0x220 mm/slab.c:3822
 tls_ctx_free.part.0+0x32/0x40 net/tls/tls_main.c:251
 tls_ctx_free net/tls/tls_main.c:246 [inline]
 tls_sk_proto_close+0x684/0xa20 net/tls/tls_main.c:304
 inet_release+0xff/0x1e0 net/ipv4/af_inet.c:428
 inet6_release+0x53/0x80 net/ipv6/af_inet6.c:472
 __sock_release+0xce/0x2a0 net/socket.c:579
 sock_close+0x1b/0x30 net/socket.c:1140
 __fput+0x2dd/0x8b0 fs/file_table.c:278
 ____fput+0x16/0x20 fs/file_table.c:309
 task_work_run+0x145/0x1c0 kernel/task_work.c:113
 tracehook_notify_resume include/linux/tracehook.h:193 [inline]
 exit_to_usermode_loop+0x273/0x2c0 arch/x86/entry/common.c:167
 prepare_exit_to_usermode arch/x86/entry/common.c:198 [inline]
 syscall_return_slowpath arch/x86/entry/common.c:271 [inline]
 do_syscall_64+0x53d/0x620 arch/x86/entry/common.c:296
 entry_SYSCALL_64_after_hwframe+0x49/0xbe

The buggy address belongs to the object at ffff8880a53dcac0
 which belongs to the cache kmalloc-512 of size 512
The buggy address is located 224 bytes inside of
 512-byte region [ffff8880a53dcac0, ffff8880a53dccc0)
The buggy address belongs to the page:
page:ffffea000294f700 count:1 mapcount:0 mapping:ffff88812c3f0940 index:0xffff8880a53dc5c0
flags: 0x1fffc0000000100(slab)
raw: 01fffc0000000100 ffffea00027fea08 ffffea000215e108 ffff88812c3f0940
raw: ffff8880a53dc5c0 ffff8880a53dc0c0 0000000100000004 0000000000000000
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff8880a53dca80: fc fc fc fc fc fc fc fc fb fb fb fb fb fb fb fb
 ffff8880a53dcb00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff8880a53dcb80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                               ^
 ffff8880a53dcc00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff8880a53dcc80: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc
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