kernel BUG at net/core/skbuff.c:LINE!

kernel BUG at net/core/skbuff.c:LINE!
Status: upstream: reported C repro on 2019/04/12 15:43
Reported-by: syzbot+812d66c9f9b0bbb28d30@syzkaller.appspotmail.com
First crash: 160d, last: 23h28m

similar bugs (7):
Kernel	Title	Repro	Count	Last	Reported	Patched	Status
android-44	kernel BUG at net/core/skbuff.c:LINE!	C	60	14d	161d	0/2	public: reported C repro on 2019/04/11 08:44
linux-4.19	kernel BUG at net/core/skbuff.c:LINE!	syz	62	3d07h	144d	0/1	upstream: reported syz repro on 2019/04/27 20:12
upstream	kernel BUG at net/core/skbuff.c:LINE! (2)	C	562	600d	689d	4/13	fixed on 2018/01/29 03:39
android-414	kernel BUG at net/core/skbuff.c:LINE!	C	1798	3h55m	161d	0/1	public: reported C repro on 2019/04/11 00:00
upstream	kernel BUG at net/core/skbuff.c:LINE! (3)	C	2603	10h45m	594d	0/13	upstream: reported C repro on 2018/02/01 19:21
upstream	kernel BUG at net/core/skbuff.c:LINE!		5	695d	765d	3/13	fixed on 2017/10/27 10:10
android-49	kernel BUG at net/core/skbuff.c:LINE!	C	240	5d00h	160d	0/3	public: reported C repro on 2019/04/12 00:00

Sample crash report:

R13: 00007ffc50e8467f R14: 00007faf5fa079c0 R15: 0000000000000000
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
------------[ cut here ]------------
CPU: 0 PID: 7103 Comm: syz-executor693 Not tainted 4.14.113 #3
kernel BUG at net/core/skbuff.c:2644!
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
Call Trace:
Modules linked in:
 __dump_stack lib/dump_stack.c:17 [inline]
 dump_stack+0x138/0x19c lib/dump_stack.c:53
CPU: 1 PID: 0 Comm: swapper/1 Not tainted 4.14.113 #3
 fail_dump lib/fault-inject.c:51 [inline]
 should_fail.cold+0x10f/0x159 lib/fault-inject.c:149
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
task: ffff8880a9d1c340 task.stack: ffff8880a9d28000
 should_failslab+0xdb/0x130 mm/failslab.c:32
RIP: 0010:skb_copy_and_csum_bits+0x65c/0x740 net/core/skbuff.c:2644
 slab_pre_alloc_hook mm/slab.h:421 [inline]
 slab_alloc mm/slab.c:3376 [inline]
 kmem_cache_alloc+0x2d9/0x780 mm/slab.c:3550
RSP: 0018:ffff8880aef072d8 EFLAGS: 00010206
 kmem_cache_zalloc include/linux/slab.h:651 [inline]
 taskstats_tgid_alloc kernel/taskstats.c:577 [inline]
 taskstats_exit+0x619/0xbd0 kernel/taskstats.c:610
RAX: ffff8880a9d1c340 RBX: 0000000000000000 RCX: ffff888094e5e34c
RDX: 0000000000000100 RSI: ffff888091dca968 RDI: ffff88808f8f3dc8
RBP: ffff8880aef07360 R08: 0000000000000000 R09: 0000000000000000
R10: 000000000000003c R11: ffff888091dcabe3 R12: 000000008c410295
 do_exit+0x368/0x2c10 kernel/exit.c:859
R13: 0000000000000000 R14: 000000000000003c R15: ffff88808f8f3dc0
FS:  0000000000000000(0000) GS:ffff8880aef00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
 do_group_exit+0x111/0x330 kernel/exit.c:977
CR2: 00007faf5fa06db8 CR3: 000000009e0a5000 CR4: 00000000001406e0
 get_signal+0x348/0x1a80 kernel/signal.c:2407
Call Trace:
 <IRQ>
 do_signal+0x86/0x1980 arch/x86/kernel/signal.c:809
 icmp_glue_bits+0x7f/0x1d0 net/ipv4/icmp.c:357
 __ip_append_data.isra.0+0x1570/0x20c0 net/ipv4/ip_output.c:1020
 exit_to_usermode_loop+0x15c/0x220 arch/x86/entry/common.c:159
 ip_append_data.part.0+0xde/0x150 net/ipv4/ip_output.c:1173
 prepare_exit_to_usermode arch/x86/entry/common.c:198 [inline]
 syscall_return_slowpath arch/x86/entry/common.c:267 [inline]
 do_syscall_64+0x4a9/0x630 arch/x86/entry/common.c:294
 ip_append_data+0x5b/0x80 net/ipv4/ip_output.c:1162
 entry_SYSCALL_64_after_hwframe+0x42/0xb7
 icmp_push_reply+0x189/0x500 net/ipv4/icmp.c:375
RIP: 0033:0x448109
 __icmp_send+0x979/0x11f0 net/ipv4/icmp.c:742
RSP: 002b:00007faf5fa06cb8 EFLAGS: 00000246
 ORIG_RAX: 0000000000000133
RAX: ffffffffffffffe0 RBX: 00007faf5fa06cc0 RCX: 0000000000448109
RDX: 000000000000003c RSI: 0000000020004f40 RDI: 0000000000000004
RBP: 0000000000000006 R08: 0000000000000001 R09: 0000000000000032
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000006ddc2c
 icmp_send include/net/icmp.h:47 [inline]
 ip_fragment net/ipv4/ip_output.c:554 [inline]
 ip_fragment.constprop.0+0x1b6/0x200 net/ipv4/ip_output.c:541
R13: 00007ffc50e8467f R14: 00007faf5fa079c0 R15: 0000000000000000
 ip_finish_output+0x7c8/0xc70 net/ipv4/ip_output.c:315
 NF_HOOK_COND include/linux/netfilter.h:239 [inline]
 ip_output+0x1e6/0x590 net/ipv4/ip_output.c:405
 dst_output include/net/dst.h:459 [inline]
 ip_local_out+0x9c/0x180 net/ipv4/ip_output.c:124
 ip_queue_xmit+0x7d7/0x1b10 net/ipv4/ip_output.c:504
 __tcp_transmit_skb+0x1744/0x3000 net/ipv4/tcp_output.c:1130
 tcp_transmit_skb net/ipv4/tcp_output.c:1146 [inline]
 __tcp_retransmit_skb+0x53b/0x1bb0 net/ipv4/tcp_output.c:2915
 tcp_retransmit_skb+0x2e/0x230 net/ipv4/tcp_output.c:2929
 tcp_retransmit_timer+0x825/0x2580 net/ipv4/tcp_timer.c:493
 tcp_write_timer_handler+0x482/0x7e0 net/ipv4/tcp_timer.c:578
 tcp_write_timer+0xd8/0x180 net/ipv4/tcp_timer.c:596
 call_timer_fn+0x164/0x680 kernel/time/timer.c:1279
 expire_timers kernel/time/timer.c:1318 [inline]
 __run_timers kernel/time/timer.c:1634 [inline]
 __run_timers kernel/time/timer.c:1602 [inline]
 run_timer_softirq+0x5b4/0x1570 kernel/time/timer.c:1647
 __do_softirq+0x24e/0x9ae kernel/softirq.c:288
 invoke_softirq kernel/softirq.c:368 [inline]
 irq_exit+0x160/0x1b0 kernel/softirq.c:409
 exiting_irq arch/x86/include/asm/apic.h:648 [inline]
 smp_apic_timer_interrupt+0x156/0x600 arch/x86/kernel/apic/apic.c:1064
 apic_timer_interrupt+0x8e/0xa0 arch/x86/entry/entry_64.S:787
 </IRQ>
RIP: 0010:native_safe_halt+0x2/0x10 arch/x86/include/asm/irqflags.h:58
RSP: 0018:ffff8880a9d2fe70 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff10
RAX: 1ffffffff0ee2968 RBX: ffff8880a9d1c340 RCX: 0000000000000000
RDX: dffffc0000000000 RSI: 0000000000000001 RDI: ffff8880a9d1cbbc
RBP: ffff8880a9d2fe98 R08: 1ffffffff1049901 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: ffffffff87714b30
R13: 0000000000000000 R14: 0000000000000000 R15: ffff8880a9d1c340
 arch_cpu_idle+0x10/0x20 arch/x86/kernel/process.c:555
 default_idle_call+0x36/0x90 kernel/sched/idle.c:98
 cpuidle_idle_call kernel/sched/idle.c:156 [inline]
 do_idle+0x262/0x3d0 kernel/sched/idle.c:246
 cpu_startup_entry+0x1b/0x20 kernel/sched/idle.c:351
 start_secondary+0x362/0x4d0 arch/x86/kernel/smpboot.c:272
 secondary_startup_64+0xa5/0xb0 arch/x86/kernel/head_64.S:240
Code: d4 49 01 c7 44 89 75 bc 4c 89 7d c0 e9 75 fa ff ff 44 8b 65 d4 e9 61 ff ff ff e8 e0 d1 8d fc 0f 0b e9 94 fe ff ff e8 d4 d1 8d fc <0f> 0b e8 ed 76 b7 fc e9 7e fd ff ff 48 8b bd 78 ff ff ff e8 dc 
RIP: skb_copy_and_csum_bits+0x65c/0x740 net/core/skbuff.c:2644 RSP: ffff8880aef072d8
---[ end trace 6f021a7cc2fdba49 ]---

All crashes (91):
Manager	Time	Kernel	Commit	Syzkaller	Config	Log	Report	Syz repro	C repro	Maintainers
ci2-linux-4-14	2019/04/20 21:06	linux-4.14.y	68d7a45e	b0e8efcb	.config	log	report	syz	C	linux-kernel@vger.kernel.org, linux-mm@kvack.org
ci2-linux-4-14	2019/04/12 14:42	linux-4.14.y	1ec8f1f0	4f421599	.config	log	report			davem@davemloft.net, herbert@gondor.apana.org.au, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, steffen.klassert@secunet.com
ci2-linux-4-14	2019/09/18 16:03	linux-4.14.y	968722f5	46c0be24	.config	log	report			davem@davemloft.net, herbert@gondor.apana.org.au, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, steffen.klassert@secunet.com
ci2-linux-4-14	2019/09/18 13:53	linux-4.14.y	968722f5	1037b424	.config	log	report			davem@davemloft.net, herbert@gondor.apana.org.au, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, steffen.klassert@secunet.com
ci2-linux-4-14	2019/09/18 10:28	linux-4.14.y	968722f5	03e0d245	.config	log	report			davem@davemloft.net, herbert@gondor.apana.org.au, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, steffen.klassert@secunet.com
ci2-linux-4-14	2019/09/16 09:33	linux-4.14.y	968722f5	55c50e70	.config	log	report			davem@davemloft.net, herbert@gondor.apana.org.au, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, steffen.klassert@secunet.com
ci2-linux-4-14	2019/09/15 11:19	linux-4.14.y	e2cd24b6	32d59357	.config	log	report			davem@davemloft.net, herbert@gondor.apana.org.au, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, steffen.klassert@secunet.com
ci2-linux-4-14	2019/09/15 07:08	linux-4.14.y	e2cd24b6	32d59357	.config	log	report			davem@davemloft.net, herbert@gondor.apana.org.au, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, steffen.klassert@secunet.com
ci2-linux-4-14	2019/09/11 10:12	linux-4.14.y	e2cd24b6	a60cb4cd	.config	log	report			davem@davemloft.net, herbert@gondor.apana.org.au, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, steffen.klassert@secunet.com
ci2-linux-4-14	2019/09/07 23:19	linux-4.14.y	414510bc	a60cb4cd	.config	log	report			davem@davemloft.net, kuznet@ms2.inr.ac.ru, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, yoshfuji@linux-ipv6.org
ci2-linux-4-14	2019/09/06 03:35	linux-4.14.y	01fd1694	c16be727	.config	log	report			davem@davemloft.net, herbert@gondor.apana.org.au, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, steffen.klassert@secunet.com
ci2-linux-4-14	2019/09/05 21:42	linux-4.14.y	01fd1694	bf6bcce4	.config	log	report			davem@davemloft.net, kuznet@ms2.inr.ac.ru, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, yoshfuji@linux-ipv6.org
ci2-linux-4-14	2019/09/04 23:51	linux-4.14.y	01fd1694	040fda58	.config	log	report			davem@davemloft.net, herbert@gondor.apana.org.au, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, steffen.klassert@secunet.com
ci2-linux-4-14	2019/09/04 07:16	linux-4.14.y	01fd1694	526709ff	.config	log	report			davem@davemloft.net, kuznet@ms2.inr.ac.ru, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, yoshfuji@linux-ipv6.org
ci2-linux-4-14	2019/09/04 05:11	linux-4.14.y	01fd1694	526709ff	.config	log	report			davem@davemloft.net, herbert@gondor.apana.org.au, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, steffen.klassert@secunet.com
ci2-linux-4-14	2019/09/03 23:33	linux-4.14.y	01fd1694	48448e71	.config	log	report			davem@davemloft.net, herbert@gondor.apana.org.au, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, steffen.klassert@secunet.com
ci2-linux-4-14	2019/09/03 19:42	linux-4.14.y	01fd1694	48448e71	.config	log	report			davem@davemloft.net, kuznet@ms2.inr.ac.ru, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, yoshfuji@linux-ipv6.org
ci2-linux-4-14	2019/09/03 12:09	linux-4.14.y	01fd1694	48448e71	.config	log	report			davem@davemloft.net, herbert@gondor.apana.org.au, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, steffen.klassert@secunet.com
ci2-linux-4-14	2019/09/03 04:53	linux-4.14.y	01fd1694	14544a56	.config	log	report			davem@davemloft.net, herbert@gondor.apana.org.au, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, steffen.klassert@secunet.com
ci2-linux-4-14	2019/09/01 22:50	linux-4.14.y	01fd1694	bad3cce2	.config	log	report			davem@davemloft.net, herbert@gondor.apana.org.au, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, steffen.klassert@secunet.com
ci2-linux-4-14	2019/08/31 08:01	linux-4.14.y	01fd1694	bcd7bcc2	.config	log	report			davem@davemloft.net, kuznet@ms2.inr.ac.ru, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, yoshfuji@linux-ipv6.org
ci2-linux-4-14	2019/08/31 03:18	linux-4.14.y	01fd1694	bcd7bcc2	.config	log	report			davem@davemloft.net, kuznet@ms2.inr.ac.ru, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, yoshfuji@linux-ipv6.org
ci2-linux-4-14	2019/08/30 21:46	linux-4.14.y	01fd1694	9adfa876	.config	log	report			davem@davemloft.net, kuznet@ms2.inr.ac.ru, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, yoshfuji@linux-ipv6.org
ci2-linux-4-14	2019/08/29 07:36	linux-4.14.y	01fd1694	40203c15	.config	log	report			davem@davemloft.net, herbert@gondor.apana.org.au, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, steffen.klassert@secunet.com
ci2-linux-4-14	2019/08/28 10:14	linux-4.14.y	b5260801	1eb076e9	.config	log	report			davem@davemloft.net, herbert@gondor.apana.org.au, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, steffen.klassert@secunet.com
ci2-linux-4-14	2019/08/28 02:59	linux-4.14.y	b5260801	fd37b39e	.config	log	report			davem@davemloft.net, kuznet@ms2.inr.ac.ru, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, yoshfuji@linux-ipv6.org
ci2-linux-4-14	2019/08/27 23:21	linux-4.14.y	b5260801	fd37b39e	.config	log	report			davem@davemloft.net, herbert@gondor.apana.org.au, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, steffen.klassert@secunet.com
ci2-linux-4-14	2019/08/27 19:46	linux-4.14.y	b5260801	d21c5d9d	.config	log	report			davem@davemloft.net, herbert@gondor.apana.org.au, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, steffen.klassert@secunet.com
ci2-linux-4-14	2019/08/27 04:29	linux-4.14.y	b5260801	d21c5d9d	.config	log	report			davem@davemloft.net, kuznet@ms2.inr.ac.ru, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, yoshfuji@linux-ipv6.org
ci2-linux-4-14	2019/08/26 19:56	linux-4.14.y	b5260801	d21c5d9d	.config	log	report			davem@davemloft.net, herbert@gondor.apana.org.au, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, steffen.klassert@secunet.com
ci2-linux-4-14	2019/08/26 17:03	linux-4.14.y	b5260801	d21c5d9d	.config	log	report			davem@davemloft.net, herbert@gondor.apana.org.au, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, steffen.klassert@secunet.com
ci2-linux-4-14	2019/08/26 14:20	linux-4.14.y	b5260801	d21c5d9d	.config	log	report			davem@davemloft.net, herbert@gondor.apana.org.au, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, steffen.klassert@secunet.com
ci2-linux-4-14	2019/08/26 09:34	linux-4.14.y	b5260801	d21c5d9d	.config	log	report			davem@davemloft.net, kuznet@ms2.inr.ac.ru, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, yoshfuji@linux-ipv6.org
ci2-linux-4-14	2019/08/23 06:08	linux-4.14.y	45f092f9	ca6f3cfa	.config	log	report			davem@davemloft.net, kuznet@ms2.inr.ac.ru, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, yoshfuji@linux-ipv6.org
ci2-linux-4-14	2019/08/20 12:16	linux-4.14.y	45f092f9	cfc9868f	.config	log	report			davem@davemloft.net, kuznet@ms2.inr.ac.ru, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, yoshfuji@linux-ipv6.org
ci2-linux-4-14	2019/08/18 22:28	linux-4.14.y	45f092f9	b8ceabfc	.config	log	report			davem@davemloft.net, herbert@gondor.apana.org.au, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, steffen.klassert@secunet.com
ci2-linux-4-14	2019/08/18 08:05	linux-4.14.y	45f092f9	55bf8926	.config	log	report			davem@davemloft.net, herbert@gondor.apana.org.au, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, steffen.klassert@secunet.com
ci2-linux-4-14	2019/08/15 13:24	linux-4.14.y	3ffe1e79	0d298d6b	.config	log	report			davem@davemloft.net, linux-kernel@vger.kernel.org, netdev@vger.kernel.org
ci2-linux-4-14	2019/08/11 23:34	linux-4.14.y	3ffe1e79	acb51638	.config	log	report			davem@davemloft.net, herbert@gondor.apana.org.au, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, steffen.klassert@secunet.com
ci2-linux-4-14	2019/08/11 07:04	linux-4.14.y	3ffe1e79	acb51638	.config	log	report			davem@davemloft.net, herbert@gondor.apana.org.au, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, steffen.klassert@secunet.com
ci2-linux-4-14	2019/08/10 05:03	linux-4.14.y	3ffe1e79	acb51638	.config	log	report			davem@davemloft.net, herbert@gondor.apana.org.au, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, steffen.klassert@secunet.com
ci2-linux-4-14	2019/08/10 02:57	linux-4.14.y	3ffe1e79	acb51638	.config	log	report			davem@davemloft.net, herbert@gondor.apana.org.au, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, steffen.klassert@secunet.com
ci2-linux-4-14	2019/08/08 10:04	linux-4.14.y	b19ffe6e	e6ebef88	.config	log	report			davem@davemloft.net, kuznet@ms2.inr.ac.ru, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, yoshfuji@linux-ipv6.org
ci2-linux-4-14	2019/06/10 05:29	linux-4.14.y	e6a95d88	0159583c	.config	log	report			davem@davemloft.net, herbert@gondor.apana.org.au, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, steffen.klassert@secunet.com
ci2-linux-4-14	2019/06/10 01:14	linux-4.14.y	e6a95d88	0159583c	.config	log	report			davem@davemloft.net, kuznet@ms2.inr.ac.ru, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, yoshfuji@linux-ipv6.org
ci2-linux-4-14	2019/05/02 15:40	linux-4.14.y	1c046f37	1852eb18	.config	log	report			davem@davemloft.net, kuznet@ms2.inr.ac.ru, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, yoshfuji@linux-ipv6.org
ci2-linux-4-14	2019/05/02 00:49	linux-4.14.y	fa5941f4	7516d9fa	.config	log	report			davem@davemloft.net, kuznet@ms2.inr.ac.ru, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, yoshfuji@linux-ipv6.org
ci2-linux-4-14	2019/04/20 20:31	linux-4.14.y	68d7a45e	b0e8efcb	.config	log	report			davem@davemloft.net, kuznet@ms2.inr.ac.ru, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, yoshfuji@linux-ipv6.org
ci2-linux-4-14	2019/04/20 13:45	linux-4.14.y	68d7a45e	b0e8efcb	.config	log	report			davem@davemloft.net, kuznet@ms2.inr.ac.ru, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, yoshfuji@linux-ipv6.org