assertion failed: BHLEN(bp) >= offsetof(struct etherpkt, data)

[akaros] assertion failed: BHLEN(bp) >= offsetof(struct etherpkt, data)
Status: upstream: reported C repro on 2018/07/21 00:31
Reported-by: syzbot+3d8007cb48c458a19837@syzkaller.appspotmail.com
First crash: 210d, last: now

Sample crash report:

kernel panic at kern/drivers/dev/ether.c:317, from core 0: assertion failed: BHLEN(bp) >= offsetof(struct etherpkt, data)
Stack Backtrace on Core 0:
#01 [<0xffffffffc200a2bc>] in backtrace at src/kdebug.c:220
#02 [<0xffffffffc2009afd>] in _panic at src/init.c:268
#03 [<0xffffffffc2077b63>] in etheriq at drivers/dev/ether.c:317
#04 [<0xffffffffc2077d2e>] in etheroq at drivers/dev/ether.c:424
#05 [<0xffffffffc2077faf>] in etherwrite at drivers/dev/ether.c:505
#06 [<0xffffffffc2040221>] in rwrite at src/ns/sysfile.c:1123
#07 [<0xffffffffc204043b>] in syswrite at src/ns/sysfile.c:1141
#08 [<0xffffffffc2055f61>] in sys_write at src/syscall.c:1785
#09 [<0xffffffffc2059439>] in syscall at src/syscall.c:2528
#10 [<0xffffffffc2059604>] in run_local_syscall at src/syscall.c:2563
#11 [<0xffffffffc2059b39>] in prep_syscalls at src/syscall.c:2583
#12 [<0xffffffffc20ab38a>] in sysenter_callwrapper at arch/x86/trap.c:854

All crashes (137):
Manager	Time	Kernel	Commit	Syzkaller	Config	Log	Report	Syz repro	C repro
ci-akaros-main	2018/07/21 00:30	akaros	9196d29a	8cc079c3	.config	log	report	syz	C
ci-akaros-main	2019/02/16 17:52	akaros	babe106a	f42dee6d	.config	log	report
ci-akaros-main	2019/02/13 15:08	akaros	babe106a	0a49c954	.config	log	report
ci-akaros-main	2019/02/11 10:12	akaros	babe106a	5e5bb28e	.config	log	report
ci-akaros-main	2019/02/08 17:52	akaros	babe106a	fa6c7b70	.config	log	report
ci-akaros-main	2019/02/06 13:21	akaros	babe106a	d672172c	.config	log	report
ci-akaros-main	2019/02/06 05:35	akaros	babe106a	d672172c	.config	log	report
ci-akaros-main	2019/01/29 22:10	akaros	828f5ad5	aa432daf	.config	log	report
ci-akaros-main	2019/01/26 14:53	akaros	828f5ad5	c73f090a	.config	log	report
ci-akaros-main	2019/01/22 05:09	akaros	828f5ad5	badbbeee	.config	log	report
ci-akaros-main	2019/01/12 21:01	akaros	828f5ad5	80dde172	.config	log	report
ci-akaros-main	2019/01/09 08:26	akaros	d6471cf5	45c0c1b1	.config	log	report
ci-akaros-main	2019/01/08 16:07	akaros	d6471cf5	37dd2683	.config	log	report
ci-akaros-main	2019/01/07 18:39	akaros	d6471cf5	69d69aa9	.config	log	report
ci-akaros-main	2019/01/07 16:58	akaros	d6471cf5	69d69aa9	.config	log	report
ci-akaros-main	2019/01/04 19:27	akaros	d6471cf5	0127e3ba	.config	log	report
ci-akaros-main	2019/01/04 18:19	akaros	d6471cf5	0127e3ba	.config	log	report
ci-akaros-main	2018/12/27 06:53	akaros	d6471cf5	e747ec98	.config	log	report
ci-akaros-main	2018/12/22 23:37	akaros	d6471cf5	e3bd7ab8	.config	log	report
ci-akaros-main	2018/12/22 11:23	akaros	d6471cf5	e3bd7ab8	.config	log	report
ci-akaros-main	2018/12/21 12:20	akaros	d6471cf5	588075e6	.config	log	report
ci-akaros-main	2018/12/21 10:13	akaros	d6471cf5	2b497001	.config	log	report
ci-akaros-main	2018/12/20 17:44	akaros	d6471cf5	aaf59e84	.config	log	report
ci-akaros-main	2018/12/19 08:27	akaros	d6471cf5	4edaba93	.config	log	report
ci-akaros-main	2018/12/18 09:30	akaros	f89b6d30	7624ddd6	.config	log	report
ci-akaros-main	2018/12/16 17:28	akaros	f89b6d30	7624ddd6	.config	log	report
ci-akaros-main	2018/12/16 06:04	akaros	f89b6d30	7624ddd6	.config	log	report
ci-akaros-main	2018/12/11 21:22	akaros	f89b6d30	7795ae03	.config	log	report
ci-akaros-main	2018/12/08 13:36	akaros	f89b6d30	6ae0ca72	.config	log	report
ci-akaros-main	2018/12/07 13:51	akaros	f89b6d30	1eb6a7e4	.config	log	report
ci-akaros-main	2018/12/06 22:00	akaros	f89b6d30	dcf836b1	.config	log	report
ci-akaros-main	2018/12/05 21:05	akaros	f89b6d30	ac6c0578	.config	log	report
ci-akaros-main	2018/12/05 09:55	akaros	f89b6d30	ac6c0578	.config	log	report
ci-akaros-main	2018/12/03 21:50	akaros	f89b6d30	03f94a45	.config	log	report
ci-akaros-main	2018/12/02 16:56	akaros	f89b6d30	e0d8c853	.config	log	report
ci-akaros-main	2018/12/01 17:38	akaros	f89b6d30	5a581673	.config	log	report
ci-akaros-main	2018/11/30 13:21	akaros	f89b6d30	ac912200	.config	log	report
ci-akaros-main	2018/11/30 06:55	akaros	f89b6d30	ac912200	.config	log	report
ci-akaros-main	2018/11/29 02:12	akaros	f89b6d30	ac912200	.config	log	report
ci-akaros-main	2018/11/27 20:40	akaros	f89b6d30	ac912200	.config	log	report
ci-akaros-main	2018/11/27 17:15	akaros	f89b6d30	ac912200	.config	log	report
ci-akaros-main	2018/11/27 15:27	akaros	f89b6d30	ac912200	.config	log	report
ci-akaros-main	2018/11/27 00:27	akaros	f89b6d30	ac912200	.config	log	report
ci-akaros-main	2018/11/26 08:44	akaros	f89b6d30	ac912200	.config	log	report
ci-akaros-main	2018/11/26 00:28	akaros	f89b6d30	ecc7c870	.config	log	report
ci-akaros-main	2018/11/23 18:04	akaros	f89b6d30	2b0dc848	.config	log	report
ci-akaros-main	2018/11/22 00:55	akaros	f89b6d30	d260249e	.config	log	report
ci-akaros-main	2018/11/21 17:01	akaros	f89b6d30	d260249e	.config	log	report