================================================================== BUG: KASAN: out-of-bounds in tls_fill_prepend include/net/tls.h:368 [inline] BUG: KASAN: out-of-bounds in tls_push_record+0x10b9/0x1480 net/tls/tls_sw.c:220 Write of size 1 at addr ffff88019a50001f by task syz-executor3/14929 CPU: 1 PID: 14929 Comm: syz-executor3 Not tainted 4.19.0-rc7+ #143 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+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_store1_noabort+0x17/0x20 mm/kasan/report.c:435 tls_fill_prepend include/net/tls.h:368 [inline] tls_push_record+0x10b9/0x1480 net/tls/tls_sw.c:220 tls_sw_push_pending_record+0x22/0x30 net/tls/tls_sw.c:257 tls_push_pending_closed_record+0x10c/0x150 net/tls/tls_main.c:203 tls_complete_pending_work include/net/tls.h:298 [inline] tls_sk_proto_close+0x7c2/0xbb0 net/tls/tls_main.c:270 inet_release+0x104/0x1f0 net/ipv4/af_inet.c:428 inet6_release+0x50/0x70 net/ipv6/af_inet6.c:457 __sock_release+0xd7/0x250 net/socket.c:579 sock_close+0x19/0x20 net/socket.c:1141 __fput+0x385/0xa30 fs/file_table.c:278 ____fput+0x15/0x20 fs/file_table.c:309 task_work_run+0x1e8/0x2a0 kernel/task_work.c:113 get_signal+0x155e/0x1980 kernel/signal.c:2343 do_signal+0x9c/0x21e0 arch/x86/kernel/signal.c:816 exit_to_usermode_loop+0x2e5/0x380 arch/x86/entry/common.c:162 prepare_exit_to_usermode arch/x86/entry/common.c:197 [inline] syscall_return_slowpath arch/x86/entry/common.c:268 [inline] do_syscall_64+0x6be/0x820 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x457569 Code: fd b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 cb b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f9eeab20c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002c RAX: 0000000000004000 RBX: 00007f9eeab20c90 RCX: 0000000000457569 RDX: 000000000039a191 RSI: 00000000200005c0 RDI: 0000000000000003 RBP: 000000000072bf00 R08: 0000000020000000 R09: 000000000000001c R10: 0000000000000000 R11: 0000000000000246 R12: 00007f9eeab216d4 R13: 00000000004c3921 R14: 00000000004d57d8 R15: 0000000000000006 The buggy address belongs to the page: page:ffffea0006694000 count:0 mapcount:-128 mapping:0000000000000000 index:0x0 flags: 0x2fffc0000000000() raw: 02fffc0000000000 ffffea0006646e08 ffff88021fffaef8 0000000000000000 raw: 0000000000000000 0000000000000003 00000000ffffff7f 0000000000000000 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff88019a4fff00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff88019a4fff80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc >ffff88019a500000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ^ ffff88019a500080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ffff88019a500100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ==================================================================