linux-kernel - general protection fault in tls_sk_proto

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives
Hash Suite: Windows password security audit tool. GUI, reports in PDF.
[<prev] [next>] [thread-next>] [day] [month] [year] [list]
Message-ID: <000000000000c3c461059127a1c4@google.com>
Date:   Tue, 27 Aug 2019 23:38:07 -0700
From:   syzbot <syzbot+7a6ee4d0078eac6bf782@...kaller.appspotmail.com>
To:     aviadye@...lanox.com, borisp@...lanox.com, daniel@...earbox.net,
        davejwatson@...com, davem@...emloft.net,
        jakub.kicinski@...ronome.com, john.fastabend@...il.com,
        linux-kernel@...r.kernel.org, netdev@...r.kernel.org,
        syzkaller-bugs@...glegroups.com
Subject: general protection fault in tls_sk_proto_close (2)

Hello,

syzbot found the following crash on:

HEAD commit:    a55aa89a Linux 5.3-rc6
git tree:       upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=16c26ebc600000
kernel config:  https://syzkaller.appspot.com/x/.config?x=2a6a2b9826fdadf9
dashboard link: https://syzkaller.appspot.com/bug?extid=7a6ee4d0078eac6bf782
compiler:       gcc (GCC) 9.0.0 20181231 (experimental)
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=1112a4de600000

IMPORTANT: if you fix the bug, please add the following tag to the commit:
Reported-by: syzbot+7a6ee4d0078eac6bf782@...kaller.appspotmail.com

kasan: CONFIG_KASAN_INLINE enabled
kasan: GPF could be caused by NULL-ptr deref or user memory access
general protection fault: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 10290 Comm: syz-executor.0 Not tainted 5.3.0-rc6 #120
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS  
Google 01/01/2011
RIP: 0010:tls_sk_proto_close+0xe5/0x990 net/tls/tls_main.c:298
Code: 0f 85 3f 08 00 00 49 8b 84 24 c0 02 00 00 4d 8d 75 14 4c 89 f2 48 c1  
ea 03 48 89 85 50 ff ff ff 48 b8 00 00 00 00 00 fc ff df <0f> b6 04 02 4c  
89 f2 83 e2 07 38 d0 7f 08 84 c0 0f 85 2e 06 00 00
RSP: 0018:ffff88809b23fb90 EFLAGS: 00010203
RAX: dffffc0000000000 RBX: dffffc0000000000 RCX: ffffffff862cb8db
RDX: 0000000000000002 RSI: ffffffff862cb639 RDI: ffff8880a155ef00
RBP: ffff88809b23fc48 R08: ffff888094344640 R09: ffffed10142abd9a
R10: ffffed10142abd99 R11: ffff8880a155eccb R12: ffff8880a155ec40
R13: 0000000000000000 R14: 0000000000000014 R15: 0000000000000001
FS:  00005555556a8940(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f353458e000 CR3: 00000000a9174000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
  tls_sk_proto_close+0x35b/0x990 net/tls/tls_main.c:321
  tcp_bpf_close+0x17c/0x390 net/ipv4/tcp_bpf.c:582
  inet_release+0xed/0x200 net/ipv4/af_inet.c:427
  inet6_release+0x53/0x80 net/ipv6/af_inet6.c:470
  __sock_release+0xce/0x280 net/socket.c:590
  sock_close+0x1e/0x30 net/socket.c:1268
  __fput+0x2ff/0x890 fs/file_table.c:280
  ____fput+0x16/0x20 fs/file_table.c:313
  task_work_run+0x145/0x1c0 kernel/task_work.c:113
  tracehook_notify_resume include/linux/tracehook.h:188 [inline]
  exit_to_usermode_loop+0x316/0x380 arch/x86/entry/common.c:163
  prepare_exit_to_usermode arch/x86/entry/common.c:194 [inline]
  syscall_return_slowpath arch/x86/entry/common.c:274 [inline]
  do_syscall_64+0x5a9/0x6a0 arch/x86/entry/common.c:299
  entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x413540
Code: 01 f0 ff ff 0f 83 30 1b 00 00 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f  
44 00 00 83 3d 4d 2d 66 00 00 75 14 b8 03 00 00 00 0f 05 <48> 3d 01 f0 ff  
ff 0f 83 04 1b 00 00 c3 48 83 ec 08 e8 0a fc ff ff
RSP: 002b:00007fff5d481778 EFLAGS: 00000246 ORIG_RAX: 0000000000000003
RAX: 0000000000000000 RBX: 0000000000000006 RCX: 0000000000413540
RDX: 0000001b2e520000 RSI: 0000000000000000 RDI: 0000000000000005
RBP: 0000000000000001 R08: 0000000000000000 R09: ffffffffffffffff
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000075bf20
R13: 0000000000000003 R14: 0000000000761220 R15: ffffffffffffffff
Modules linked in:
---[ end trace bdfd4385a0f1f76d ]---
RIP: 0010:tls_sk_proto_close+0xe5/0x990 net/tls/tls_main.c:298
Code: 0f 85 3f 08 00 00 49 8b 84 24 c0 02 00 00 4d 8d 75 14 4c 89 f2 48 c1  
ea 03 48 89 85 50 ff ff ff 48 b8 00 00 00 00 00 fc ff df <0f> b6 04 02 4c  
89 f2 83 e2 07 38 d0 7f 08 84 c0 0f 85 2e 06 00 00
RSP: 0018:ffff88809b23fb90 EFLAGS: 00010203
RAX: dffffc0000000000 RBX: dffffc0000000000 RCX: ffffffff862cb8db
RDX: 0000000000000002 RSI: ffffffff862cb639 RDI: ffff8880a155ef00
RBP: ffff88809b23fc48 R08: ffff888094344640 R09: ffffed10142abd9a
R10: ffffed10142abd99 R11: ffff8880a155eccb R12: ffff8880a155ec40
R13: 0000000000000000 R14: 0000000000000014 R15: 0000000000000001
FS:  00005555556a8940(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f353458e000 CR3: 00000000a9174000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400


---
This bug is generated by a bot. It may contain errors.
See https://goo.gl/tpsmEJ for more information about syzbot.
syzbot engineers can be reached at syzkaller@...glegroups.com.

syzbot will keep track of this bug report. See:
https://goo.gl/tpsmEJ#status for how to communicate with syzbot.
syzbot can test patches for this bug, for details see:
https://goo.gl/tpsmEJ#testing-patches