assertion failed: rpi->gp_acked + 1 == READ

[akaros] assertion failed: rpi->gp_acked + 1 == READ_ONCE(rsp->gpnum)
Status: upstream: reported on 2018/07/16 16:19
Reported-by: syzbot+9486bd339e12b3fe37c9@syzkaller.appspotmail.com
First crash: 215d, last: 207d

duplicates:
Title	Repro	Count	Last	Reported	Patched	Status
assertion failed: rpi->gp_acked + 1 == READ_ONCE(rsp->gpnum)HW TRAP frame at ADDR on core 2		1	214d	214d		closed as dup on 2018/07/18 09:28
assertion failed: rpi->gp_acked + 1 == READ_ONCE(rsp->gpnum)HW TRAP frame at ADDR on core 3		1	214d	214d		closed as dup on 2018/07/18 09:27

Sample crash report:

kernel panic at kern/src/rcu.c:325, from core 3: assertion failed: rpi->gp_acked + 1 == READ_ONCE(rsp->gpnum)
Stack Backtrace on Core 3:
#01 [<0xffffffffc200a3b7>] in backtrace at src/kdebug.c:219
#02 [<0xffffffffc2009b7c>] in _panic at src/init.c:266
#03 [<0xffffffffc20502f9>] in rcu_report_qs_rpi at src/rcu.c:325
#04 [<0xffffffffc2050c4c>] in rcu_report_qs at src/rcu.c:340
#05 [<0xffffffffc2054363>] in __smp_idle at src/smp.c:75
kernel panic at kern/src/rcu.c:325, from core 2: assertion failed: rpi->gp_acked + 1 == READ_ONCE(rsp->gpnum)
Stack Backtrace on Core 2:
#01 [<0xffffffffc200a3b7>] in backtrace at src/kdebug.c:219
#02 [<0xffffffffc2009b7c>] in _panic at src/init.c:266
#03 [<0xffffffffc20502f9>] in rcu_report_qs_rpi at src/rcu.c:325
#04 [<0xffffffffc2050c4c>] in rcu_report_qs at src/rcu.c:340
#05 [<0xffffffffc2054363>] in __smp_idle at src/smp.c:75

All crashes (1353):
Manager	Time	Kernel	Commit	Syzkaller	Config	Log	Report
ci-akaros-main	2018/07/16 16:02	akaros	93b9607e	40cb0c9a	.config	log	report
ci-akaros-main	2018/07/23 18:44	akaros	9196d29a	f69c5fcd	.config	log	report
ci-akaros-main	2018/07/23 17:46	akaros	9196d29a	f69c5fcd	.config	log	report
ci-akaros-main	2018/07/23 17:20	akaros	9196d29a	f69c5fcd	.config	log	report
ci-akaros-main	2018/07/23 16:19	akaros	9196d29a	f69c5fcd	.config	log	report
ci-akaros-main	2018/07/23 15:23	akaros	9196d29a	f69c5fcd	.config	log	report
ci-akaros-main	2018/07/23 14:57	akaros	9196d29a	f69c5fcd	.config	log	report
ci-akaros-main	2018/07/23 13:56	akaros	9196d29a	f69c5fcd	.config	log	report
ci-akaros-main	2018/07/23 13:26	akaros	9196d29a	f69c5fcd	.config	log	report
ci-akaros-main	2018/07/23 12:20	akaros	9196d29a	f69c5fcd	.config	log	report
ci-akaros-main	2018/07/23 11:35	akaros	9196d29a	f69c5fcd	.config	log	report
ci-akaros-main	2018/07/23 11:29	akaros	9196d29a	f69c5fcd	.config	log	report
ci-akaros-main	2018/07/23 10:27	akaros	9196d29a	f69c5fcd	.config	log	report
ci-akaros-main	2018/07/23 09:26	akaros	9196d29a	f69c5fcd	.config	log	report
ci-akaros-main	2018/07/23 09:22	akaros	9196d29a	f69c5fcd	.config	log	report
ci-akaros-main	2018/07/23 08:20	akaros	9196d29a	f69c5fcd	.config	log	report
ci-akaros-main	2018/07/23 08:06	akaros	9196d29a	f69c5fcd	.config	log	report
ci-akaros-main	2018/07/23 07:00	akaros	9196d29a	8cc079c3	.config	log	report
ci-akaros-main	2018/07/23 06:36	akaros	9196d29a	8cc079c3	.config	log	report
ci-akaros-main	2018/07/23 05:28	akaros	9196d29a	8cc079c3	.config	log	report
ci-akaros-main	2018/07/23 04:50	akaros	9196d29a	8cc079c3	.config	log	report
ci-akaros-main	2018/07/23 03:50	akaros	9196d29a	8cc079c3	.config	log	report
ci-akaros-main	2018/07/23 03:36	akaros	9196d29a	8cc079c3	.config	log	report
ci-akaros-main	2018/07/23 02:22	akaros	9196d29a	8cc079c3	.config	log	report
ci-akaros-main	2018/07/23 01:58	akaros	9196d29a	8cc079c3	.config	log	report
ci-akaros-main	2018/07/23 00:54	akaros	9196d29a	8cc079c3	.config	log	report
ci-akaros-main	2018/07/22 23:53	akaros	9196d29a	8cc079c3	.config	log	report
ci-akaros-main	2018/07/22 23:44	akaros	9196d29a	8cc079c3	.config	log	report
ci-akaros-main	2018/07/22 22:42	akaros	9196d29a	8cc079c3	.config	log	report
ci-akaros-main	2018/07/22 22:18	akaros	9196d29a	8cc079c3	.config	log	report
ci-akaros-main	2018/07/22 20:59	akaros	9196d29a	8cc079c3	.config	log	report
ci-akaros-main	2018/07/22 20:46	akaros	9196d29a	8cc079c3	.config	log	report
ci-akaros-main	2018/07/22 19:44	akaros	9196d29a	8cc079c3	.config	log	report
ci-akaros-main	2018/07/22 18:35	akaros	9196d29a	8cc079c3	.config	log	report
ci-akaros-main	2018/07/22 18:09	akaros	9196d29a	8cc079c3	.config	log	report
ci-akaros-main	2018/07/22 17:00	akaros	9196d29a	8cc079c3	.config	log	report
ci-akaros-main	2018/07/22 16:47	akaros	9196d29a	8cc079c3	.config	log	report
ci-akaros-main	2018/07/22 15:42	akaros	9196d29a	8cc079c3	.config	log	report
ci-akaros-main	2018/07/22 14:55	akaros	9196d29a	8cc079c3	.config	log	report
ci-akaros-main	2018/07/22 13:49	akaros	9196d29a	8cc079c3	.config	log	report
ci-akaros-main	2018/07/22 13:34	akaros	9196d29a	8cc079c3	.config	log	report