R13: 00000000004c3935 R14: 00000000004d57d8 R15: 0000000000000005 CPU: 0 PID: 11298 Comm: syz-executor5 Not tainted 4.19.0-rc6+ #135 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ================================================================== Call Trace: BUG: KASAN: use-after-free in tls_fill_prepend include/net/tls.h:368 [inline] BUG: KASAN: use-after-free in tls_push_record+0x10b9/0x1480 net/tls/tls_sw.c:220 __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x1c4/0x2b4 lib/dump_stack.c:113 Write of size 1 at addr ffff880194d38000 by task syz-executor4/11251 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold.4+0xa/0x17 lib/fault-inject.c:149 should_fail_alloc_page mm/page_alloc.c:3057 [inline] prepare_alloc_pages mm/page_alloc.c:4326 [inline] __alloc_pages_nodemask+0x34b/0xde0 mm/page_alloc.c:4364 alloc_pages_current+0x10c/0x210 mm/mempolicy.c:2093 alloc_pages include/linux/gfp.h:509 [inline] skb_page_frag_refill+0x45f/0x6a0 net/core/sock.c:2212 sk_page_frag_refill+0x55/0x1f0 net/core/sock.c:2232 sk_alloc_sg+0x1e9/0xa00 net/core/sock.c:2256 alloc_plaintext_sg net/tls/tls_sw.c:140 [inline] tls_sw_sendmsg+0x714/0x1310 net/tls/tls_sw.c:440 inet_sendmsg+0x1a1/0x690 net/ipv4/af_inet.c:798 sock_sendmsg_nosec net/socket.c:621 [inline] sock_sendmsg+0xd5/0x120 net/socket.c:631 __sys_sendto+0x3d7/0x670 net/socket.c:1788 __do_sys_sendto net/socket.c:1800 [inline] __se_sys_sendto net/socket.c:1796 [inline] __x64_sys_sendto+0xe1/0x1a0 net/socket.c:1796 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x457579 Code: 1d b4 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 eb b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f150e48fc78 EFLAGS: 00000246 ORIG_RAX: 000000000000002c RAX: ffffffffffffffda RBX: 00007f150e48fc90 RCX: 0000000000457579 RDX: 00000000fffffdef RSI: 00000000200005c0 RDI: 0000000000000004 RBP: 000000000072bf00 R08: 0000000020000000 R09: 000000000000001c R10: 0000000000000040 R11: 0000000000000246 R12: 00007f150e4906d4 R13: 00000000004c3935 R14: 00000000004d57d8 R15: 0000000000000005 CPU: 1 PID: 11251 Comm: syz-executor4 Not tainted 4.19.0-rc6+ #135 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_handle_open_record net/tls/tls_main.c:156 [inline] tls_sk_proto_close+0x69c/0xbb0 net/tls/tls_main.c:271 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 tracehook_notify_resume include/linux/tracehook.h:193 [inline] exit_to_usermode_loop+0x318/0x380 arch/x86/entry/common.c:166 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: 0033:0x411051 Code: 75 14 b8 03 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 34 19 00 00 c3 48 83 ec 08 e8 0a fc ff ff 48 89 04 24 b8 03 00 00 00 0f 05 <48> 8b 3c 24 48 89 c2 e8 53 fc ff ff 48 89 d0 48 83 c4 08 48 3d 01 RSP: 002b:00007ffc592d68e0 EFLAGS: 00000293 ORIG_RAX: 0000000000000003 RAX: 0000000000000000 RBX: 0000000000000005 RCX: 0000000000411051 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000004 RBP: 0000000000000000 R08: 00000000816382fb R09: 00000000816382ff R10: 00007ffc592d6810 R11: 0000000000000293 R12: 0000000000000000 R13: 0000000000000001 R14: 0000000000000096 R15: 0000000000000004 The buggy address belongs to the page: page:ffffea0006534e00 count:2 mapcount:0 mapping:0000000000000000 index:0x0 compound_mapcount: 0 flags: 0x2fffc0000008000(head) raw: 02fffc0000008000 dead000000000100 dead000000000200 0000000000000000 raw: 0000000000000000 0000000000000000 00000002ffffffff 0000000000000000 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff880194d37f00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff880194d37f80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 >ffff880194d38000: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ^ ffff880194d38080: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff880194d38100: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ==================================================================