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general protection fault in tls_push_sg

Status: fixed on 2019/02/26 22:09
Subsystems: net
[Documentation on labels]
Reported-by: syzbot+54bcc120da8da091d609@syzkaller.appspotmail.com
Fix commit: d829e9c4112b tls: convert to generic sk_msg interface
First crash: 2137d, last: 2028d
▶ ▼ Discussions (1)
Title Replies (including bot) Last reply
general protection fault in tls_push_sg 1 (2) 2019/02/26 07:40
▶ ▼ Similar bugs (2)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-4.19 general protection fault in tls_push_sg (2) C error 6 655d 767d 0/1 upstream: reported C repro on 2022/03/21 10:19
linux-4.19 general protection fault in tls_push_sg 3 1640d 1740d 0/1 auto-closed as invalid on 2020/02/27 15:41

Sample crash report:
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: 17595 Comm: syz-executor3 Not tainted 4.19.0-rc6+ #271
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:__read_once_size include/linux/compiler.h:188 [inline]
RIP: 0010:compound_head include/linux/page-flags.h:142 [inline]
RIP: 0010:put_page include/linux/mm.h:931 [inline]
RIP: 0010:tls_push_sg+0x2c4/0x8c0 net/tls/tls_main.c:134
Code: b2 4f dc fa 48 8b 85 08 ff ff ff 48 b9 00 00 00 00 00 fc ff df c6 00 00 48 8b 85 28 ff ff ff 48 8d 78 08 48 89 f8 48 c1 e8 03 <80> 3c 08 00 0f 85 16 05 00 00 48 8b 85 28 ff ff ff 48 8b 58 08 48
RSP: 0018:ffff8801c067f780 EFLAGS: 00010202
RAX: 0000000000000001 RBX: 0000000000000000 RCX: dffffc0000000000
RDX: 0000000000000000 RSI: ffffffff86a285de RDI: 0000000000000008
RBP: ffff8801c067f8a0 R08: ffff8801c8b4e200 R09: 0000000000000000
R10: fffff94000c46246 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: ffff880181dd5640
FS:  00000000018c4940(0000) GS:ffff8801daf00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2c92c000 CR3: 00000001cbd46000 CR4: 00000000001426e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 tls_push_record+0xb4d/0x1480 net/tls/tls_sw.c:245
 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:0000000000a3fd90 EFLAGS: 00000293 ORIG_RAX: 0000000000000003
RAX: 0000000000000000 RBX: 0000000000000004 RCX: 0000000000411051
RDX: 0000000000000000 RSI: 0000000000731400 RDI: 0000000000000003
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000a3fcb0 R11: 0000000000000293 R12: 0000000000000000
R13: 0000000000000001 R14: 000000000000014d R15: 0000000000000003
Modules linked in:
---[ end trace 2f6367e3bd72a870 ]---
RIP: 0010:__read_once_size include/linux/compiler.h:188 [inline]
RIP: 0010:compound_head include/linux/page-flags.h:142 [inline]
RIP: 0010:put_page include/linux/mm.h:931 [inline]
RIP: 0010:tls_push_sg+0x2c4/0x8c0 net/tls/tls_main.c:134
Code: b2 4f dc fa 48 8b 85 08 ff ff ff 48 b9 00 00 00 00 00 fc ff df c6 00 00 48 8b 85 28 ff ff ff 48 8d 78 08 48 89 f8 48 c1 e8 03 <80> 3c 08 00 0f 85 16 05 00 00 48 8b 85 28 ff ff ff 48 8b 58 08 48
kobject: 'loop4' (00000000c5823319): kobject_uevent_env
RSP: 0018:ffff8801c067f780 EFLAGS: 00010202
RAX: 0000000000000001 RBX: 0000000000000000 RCX: dffffc0000000000
kobject: 'loop4' (00000000c5823319): fill_kobj_path: path = '/devices/virtual/block/loop4'
RDX: 0000000000000000 RSI: ffffffff86a285de RDI: 0000000000000008
kobject: 'loop0' (00000000f667d3a7): kobject_uevent_env
kobject: 'loop0' (00000000f667d3a7): fill_kobj_path: path = '/devices/virtual/block/loop0'
RBP: ffff8801c067f8a0 R08: ffff8801c8b4e200 R09: 0000000000000000
R10: fffff94000c46246 R11: 0000000000000000 R12: 0000000000000000
kobject: 'loop2' (000000004dd152c9): kobject_uevent_env
kobject: 'loop2' (000000004dd152c9): fill_kobj_path: path = '/devices/virtual/block/loop2'
R13: 0000000000000000 R14: 0000000000000000 R15: ffff880181dd5640
FS:  00000000018c4940(0000) GS:ffff8801daf00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
kobject: 'loop5' (00000000128bb8a8): kobject_uevent_env
CR2: 00000000010dcc48 CR3: 00000001cbd46000 CR4: 00000000001426e0
kobject: 'loop5' (00000000128bb8a8): fill_kobj_path: path = '/devices/virtual/block/loop5'
kobject: 'loop1' (00000000d52030a3): kobject_uevent_env
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
kobject: 'loop1' (00000000d52030a3): fill_kobj_path: path = '/devices/virtual/block/loop1'

Crashes (12):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2018/10/07 10:18 upstream c1d84a1b42ef 8b311eaf .config console log report ci-upstream-kasan-gce
2018/08/10 10:53 upstream 112cbae26d18 1fb62d58 .config console log report ci-upstream-kasan-gce
2018/08/05 13:04 upstream 60f5a2173632 1beb8136 .config console log report ci-upstream-kasan-gce-root
2018/07/19 08:53 upstream 04a132065175 49f35839 .config console log report ci-upstream-kasan-gce-root
2018/07/09 03:44 upstream ca04b3cca11a f25e5770 .config console log report ci-upstream-kasan-gce
2018/06/20 01:11 upstream ba4dbdedd3ed 095ef806 .config console log report ci-upstream-kasan-gce
2018/09/24 15:13 upstream 02214bfc89c7 2f485cdf .config console log report ci-upstream-kasan-gce-386
2018/09/24 09:57 upstream 6bf4ca7fbc85 e029c3e0 .config console log report ci-upstream-kasan-gce-386
2018/10/07 14:08 net-old c1d84a1b42ef 8b311eaf .config console log report ci-upstream-net-this-kasan-gce
2018/08/24 15:14 net-next-old 2ad0d5269970 95b5c82b .config console log report ci-upstream-net-kasan-gce
2018/08/01 13:01 linux-next d9bd94c0bcaa 1477993e .config console log report ci-upstream-linux-next-kasan-gce-root
2018/07/07 08:43 linux-next 526674536360 6c0c0099 .config console log report ci-upstream-linux-next-kasan-gce-root
* Struck through repros no longer work on HEAD.