general protection fault in dev_gro

Kernel	Title	Repro	Cause bisect	Fix bisect	Count	Last	Reported	Patched	Status
upstream	general protection fault in dev_gro_receive (2) net	syz			4	2025d	2032d	11/26	fixed on 2018/11/12 21:25

device nr0 entered promiscuous mode
device nr0 entered promiscuous mode
kasan: CONFIG_KASAN_INLINE enabled
kobject: 'tx-3' (0000000037e716ed): kobject_add_internal: parent: 'queues', set: 'queues'
kasan: GPF could be caused by NULL-ptr deref or user memory access
general protection fault: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 12253 Comm: syz-executor1 Not tainted 4.19.0-rc7+ #275
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
kobject: 'tx-3' (0000000037e716ed): kobject_uevent_env
RIP: 0010:dev_gro_receive+0x132/0x2720 net/core/dev.c:5427
Code: 48 c1 ea 03 80 3c 02 00 0f 85 6e 20 00 00 48 b8 00 00 00 00 00 fc ff df 4d 8b 6e 10 49 8d bd d0 00 00 00 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 59 20 00 00 4d 8b a5 d0 00 00 00 31 ff 41 81 e4
RSP: 0018:ffff8801acba7450 EFLAGS: 00010202
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff860b1f45
RDX: 000000000000001a RSI: ffffffff860aebb7 RDI: 00000000000000d0
kobject: 'tx-3' (0000000037e716ed): fill_kobj_path: path = '/devices/virtual/net/nr0/queues/tx-3'
RBP: ffff8801acba7648 R08: ffff8801c6144680 R09: 0000000000000000
R10: ffffed0035974edf R11: 0000000000000003 R12: ffff8801c02ea858
R13: 0000000000000000 R14: ffff8801d36290c0 R15: 0000000000000040
FS:  00007f989a052700(0000) GS:ffff8801dae00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f088ef2f000 CR3: 00000001d304b000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
kobject: 'rx-3' (0000000014b5b741): kobject_add_internal: parent: 'queues', set: 'queues'
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
kobject: 'rx-3' (0000000014b5b741): kobject_uevent_env
kobject: 'rx-3' (0000000014b5b741): fill_kobj_path: path = '/devices/virtual/net/nr0/queues/rx-3'
 napi_gro_frags+0x3f4/0xc90 net/core/dev.c:5715
kobject: 'tx-1' (00000000c8fd9c15): kobject_add_internal: parent: 'queues', set: 'queues'
kobject: 'tx-1' (00000000c8fd9c15): kobject_uevent_env
 tun_get_user+0x3189/0x4250 drivers/net/tun.c:1923
kobject: 'tx-1' (00000000c8fd9c15): fill_kobj_path: path = '/devices/virtual/net/nr0/queues/tx-1'
kobject: 'rx-1' (00000000d76b7d02): kobject_add_internal: parent: 'queues', set: 'queues'
kobject: 'rx-1' (00000000d76b7d02): kobject_uevent_env
 tun_chr_write_iter+0xb9/0x154 drivers/net/tun.c:1968
 call_write_iter include/linux/fs.h:1808 [inline]
 new_sync_write fs/read_write.c:474 [inline]
 __vfs_write+0x6b8/0x9f0 fs/read_write.c:487
kobject: 'rx-1' (00000000d76b7d02): fill_kobj_path: path = '/devices/virtual/net/nr0/queues/rx-1'
 vfs_write+0x1fc/0x560 fs/read_write.c:549
 ksys_write+0x101/0x260 fs/read_write.c:598
 __do_sys_write fs/read_write.c:610 [inline]
 __se_sys_write fs/read_write.c:607 [inline]
 __x64_sys_write+0x73/0xb0 fs/read_write.c:607
 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:00007f989a051c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000457579
RDX: 000000000000004e RSI: 0000000020000180 RDI: 000000000000000b
RBP: 000000000072c040 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f989a0526d4
R13: 00000000004c554e R14: 00000000004d8e68 R15: 00000000ffffffff
Modules linked in:
---[ end trace bd8ecb25a7fda747 ]---
RIP: 0010:dev_gro_receive+0x132/0x2720 net/core/dev.c:5427
kobject: 'tx-3' (0000000037e716ed): kobject_cleanup, parent 000000001562edf7
Code: 48 c1 ea 03 80 3c 02 00 0f 85 6e 20 00 00 48 b8 00 00 00 00 00 fc ff df 4d 8b 6e 10 49 8d bd d0 00 00 00 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 59 20 00 00 4d 8b a5 d0 00 00 00 31 ff 41 81 e4
RSP: 0018:ffff8801acba7450 EFLAGS: 00010202
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff860b1f45
RDX: 000000000000001a RSI: ffffffff860aebb7 RDI: 00000000000000d0
RBP: ffff8801acba7648 R08: ffff8801c6144680 R09: 0000000000000000
R10: ffffed0035974edf R11: 0000000000000003 R12: ffff8801c02ea858
R13: 0000000000000000 R14: ffff8801d36290c0 R15: 0000000000000040
FS:  00007f989a052700(0000) GS:ffff8801dae00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f088ef2f000 CR3: 00000001d304b000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400

Time	Kernel	Commit	Syzkaller	Config	Log	Report	Syz repro	Manager
2018/10/09 19:25	upstream	64c5e530ac2c	8b311eaf	.config	console log	report	syz	ci-upstream-kasan-gce-root
2018/09/28 02:44	bpf	d4ce58082f20	0c2fa87b	.config	console log	report	syz	ci-upstream-bpf-kasan-gce
2018/10/07 23:39	upstream	fb1c592cf4c9	8b311eaf	.config	console log	report		ci-upstream-kasan-gce-smack-root
2018/10/08 17:37	bpf	262f9d811c76	8b311eaf	.config	console log	report		ci-upstream-bpf-kasan-gce
2018/10/08 12:14	bpf	262f9d811c76	8b311eaf	.config	console log	report		ci-upstream-bpf-kasan-gce
2018/10/07 08:36	bpf	b799207e1e18	8b311eaf	.config	console log	report		ci-upstream-bpf-kasan-gce
2018/10/02 23:47	bpf	b0584ea66d73	a316a2af	.config	console log	report		ci-upstream-bpf-kasan-gce
2018/09/27 23:28	bpf	d4ce58082f20	0c2fa87b	.config	console log	report		ci-upstream-bpf-kasan-gce