KMSAN: uninit-value in pppol2tp

Title	Replies (including bot)	Last reply
[PATCH 3.16 000/366] 3.16.60-rc1 review	370 (370)	2019/03/29 15:47
[PATCH 4.4 00/50] 4.4.130-stable review	69 (69)	2018/05/12 19:44
[PATCH 4.16 00/81] 4.16.6-stable review	88 (88)	2018/04/28 15:52
[PATCH 4.14 00/80] 4.14.38-stable review	90 (90)	2018/04/28 14:28
[PATCH 4.9 00/74] 4.9.97-stable review	80 (80)	2018/04/28 14:26
[PATCH 3.18 00/24] 3.18.107-stable review	36 (36)	2018/04/28 14:24
[PATCH net] l2tp: check sockaddr length in pppol2tp_connect()	3 (3)	2018/04/24 08:23
KMSAN: uninit-value in pppol2tp_connect	0 (1)	2018/04/23 08:24

================================================================== BUG: KMSAN: uninit-value in pppol2tp_connect+0x258/0x1c50 net/l2tp/l2tp_ppp.c:622 CPU: 1 PID: 4524 Comm: syzkaller735385 Not tainted 4.16.0+ #85 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x185/0x1d0 lib/dump_stack.c:53 kmsan_report+0x142/0x240 mm/kmsan/kmsan.c:1067 __msan_warning_32+0x6c/0xb0 mm/kmsan/kmsan_instr.c:683 pppol2tp_connect+0x258/0x1c50 net/l2tp/l2tp_ppp.c:622 SYSC_connect+0x41a/0x510 net/socket.c:1639 SyS_connect+0x54/0x80 net/socket.c:1620 do_syscall_64+0x309/0x430 arch/x86/entry/common.c:287 entry_SYSCALL_64_after_hwframe+0x3d/0xa2 RIP: 0033:0x445559 RSP: 002b:00007f0b96f0ddb8 EFLAGS: 00000246 ORIG_RAX: 000000000000002a RAX: ffffffffffffffda RBX: 00000000006dac24 RCX: 0000000000445559 RDX: 0000000000000000 RSI: 0000000020000200 RDI: 0000000000000003 RBP: 00000000006dac20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffec2b0929f R14: 00007f0b96f0e9c0 R15: 0000000000000001 Local variable description: ----address@SYSC_connect Variable was created at: SYSC_connect+0x6f/0x510 net/socket.c:1622 SyS_connect+0x54/0x80 net/socket.c:1620 ==================================================================

Time	Kernel	Commit	Syzkaller	Config	Log	Report	Syz repro	C repro	Manager
2018/04/21 20:18	https://github.com/google/kmsan.git master	a7f95e9c8a95	d23fcf6c	.config	console log	report	syz	C	ci-upstream-kmsan-gce
2018/05/08 09:36	https://github.com/google/kmsan.git master	d2d741e5d189	045bbd4a	.config	console log	report			ci-upstream-kmsan-gce
2018/05/07 23:53	https://github.com/google/kmsan.git master	d2d741e5d189	9e0846e8	.config	console log	report			ci-upstream-kmsan-gce
2018/05/07 20:40	https://github.com/google/kmsan.git master	d2d741e5d189	9e0846e8	.config	console log	report			ci-upstream-kmsan-gce
2018/05/07 11:34	https://github.com/google/kmsan.git master	d2d741e5d189	a211da1a	.config	console log	report			ci-upstream-kmsan-gce
2018/05/06 04:23	https://github.com/google/kmsan.git master	d2d741e5d189	78b251cb	.config	console log	report			ci-upstream-kmsan-gce
2018/05/03 16:21	https://github.com/google/kmsan.git master	d2d741e5d189	9ce14f4b	.config	console log	report			ci-upstream-kmsan-gce
2018/05/02 03:18	https://github.com/google/kmsan.git master	d2d741e5d189	d5b114b4	.config	console log	report			ci-upstream-kmsan-gce
2018/04/27 15:01	https://github.com/google/kmsan.git master	d2d741e5d189	7785e404	.config	console log	report			ci-upstream-kmsan-gce
2018/04/26 02:44	https://github.com/google/kmsan.git master	d2d741e5d189	73417389	.config	console log	report			ci-upstream-kmsan-gce
2018/04/25 06:41	https://github.com/google/kmsan.git master	d2d741e5d189	37e76fe2	.config	console log	report			ci-upstream-kmsan-gce
2018/04/23 06:06	https://github.com/google/kmsan.git master	d2d741e5d189	d23fcf6c	.config	console log	report			ci-upstream-kmsan-gce
2018/04/21 19:30	https://github.com/google/kmsan.git master	a7f95e9c8a95	d23fcf6c	.config	console log	report			ci-upstream-kmsan-gce