kernel panic: [German Accent]: OOM for a small slab growth!!! (2)

[akaros] kernel panic: [German Accent]: OOM for a small slab growth!!! (2)
Status: upstream: reported C repro on 2018/07/18 18:35
Reported-by: syzbot+b2f2e3eb4ea5b282c918@syzkaller.appspotmail.com
First crash: 212d, last: 4h40m

Sample crash report:

kernel panic at kern/src/slab.c:518, from core 0: [German Accent]: OOM for a small slab growth!!!
Stack Backtrace on Core 0:
#01 [<0xffffffffc200a2bc>] in backtrace at src/kdebug.c:220
#02 [<0xffffffffc2009afd>] in _panic at src/init.c:268
#03 [<0xffffffffc2053591>] in __kmem_alloc_from_slab at src/slab.c:518
#04 [<0xffffffffc2053bba>] in kmem_cache_alloc at src/slab.c:592
#05 [<0xffffffffc2002267>] in arena_alloc at src/arena.c:714
#06 [<     [inline]     >] in kmem_cache_grow at src/slab.c:706
#06 [<0xffffffffc2053394>] in __kmem_alloc_from_slab at src/slab.c:513
#07 [<0xffffffffc2053bba>] in kmem_cache_alloc at src/slab.c:592
#08 [<0xffffffffc200a742>] in kmalloc at src/kmalloc.c:74
#09 [<0xffffffffc205b65e>] in user_memdup.part.3 at src/umem.c:144
#10 [<     [inline]     >] in user_memdup at src/umem.c:144
#10 [<0xffffffffc205b8fd>] in user_strdup at src/umem.c:175
#11 [<0xffffffffc205b929>] in user_strdup_errno at src/umem.c:184
#12 [<0xffffffffc205bbda>] in copy_in_path at src/umem.c:252
#13 [<0xffffffffc205887a>] in sys_openat at src/syscall.c:1801
#14 [<0xffffffffc2059439>] in syscall at src/syscall.c:2528
#15 [<0xffffffffc2059604>] in run_local_syscall at src/syscall.c:2563
#16 [<0xffffffffc2059b39>] in prep_syscalls at src/syscall.c:2583
#17 [<0xffffffffc20ab38a>] in sysenter_callwrapper at arch/x86/trap.c:854

All crashes (429):
Manager	Time	Kernel	Commit	Syzkaller	Config	Log	Report	Syz repro	C repro
ci-akaros-main	2018/07/20 21:46	akaros	9196d29a	8cc079c3	.config	log	report	syz	C
ci-akaros-main	2018/07/24 05:33	akaros	c5f7000d	912c93d7	.config	log	report	syz	C
ci-akaros-main	2018/07/22 20:43	akaros	9196d29a	8cc079c3	.config	log	report	syz	C
ci-akaros-main	2018/07/22 16:23	akaros	9196d29a	8cc079c3	.config	log	report	syz	C
ci-akaros-main	2018/07/22 13:33	akaros	9196d29a	8cc079c3	.config	log	report	syz	C
ci-akaros-main	2018/07/21 18:29	akaros	9196d29a	8cc079c3	.config	log	report	syz	C
ci-akaros-main	2018/07/21 15:49	akaros	9196d29a	8cc079c3	.config	log	report	syz	C
ci-akaros-main	2018/09/11 18:27	akaros	09363dc1	4ae17b1f	.config	log	report	syz
ci-akaros-main	2018/09/10 07:02	akaros	09363dc1	6b5120a4	.config	log	report	syz
ci-akaros-main	2018/09/02 23:39	akaros	09363dc1	8d971420	.config	log	report	syz
ci-akaros-main	2018/08/12 20:10	akaros	8b21413c	7a88b141	.config	log	report	syz
ci-akaros-main	2018/08/08 04:43	akaros	8b21413c	1beb8136	.config	log	report	syz
ci-akaros-main	2018/08/05 08:32	akaros	8b21413c	3476a2df	.config	log	report	syz
ci-akaros-main	2018/07/31 18:17	akaros	6f34e34a	1a381291	.config	log	report	syz
ci-akaros-main	2019/02/16 12:34	akaros	babe106a	f42dee6d	.config	log	report
ci-akaros-main	2018/07/18 18:34	akaros	bf9a9ba0	49f35839	.config	log	report
ci-akaros-main	2019/02/16 06:07	akaros	babe106a	f42dee6d	.config	log	report
ci-akaros-main	2019/02/16 03:45	akaros	babe106a	f42dee6d	.config	log	report
ci-akaros-main	2019/02/15 23:46	akaros	babe106a	f42dee6d	.config	log	report
ci-akaros-main	2019/02/15 21:40	akaros	babe106a	f42dee6d	.config	log	report
ci-akaros-main	2019/02/15 20:36	akaros	babe106a	f42dee6d	.config	log	report
ci-akaros-main	2019/02/15 07:39	akaros	babe106a	76dd003f	.config	log	report
ci-akaros-main	2019/02/14 17:18	akaros	babe106a	76dd003f	.config	log	report
ci-akaros-main	2019/02/14 10:09	akaros	babe106a	6a46f448	.config	log	report
ci-akaros-main	2019/02/14 02:18	akaros	babe106a	0a49c954	.config	log	report
ci-akaros-main	2019/02/13 19:00	akaros	babe106a	0a49c954	.config	log	report
ci-akaros-main	2019/02/13 14:09	akaros	babe106a	1eedba36	.config	log	report
ci-akaros-main	2019/02/12 16:26	akaros	babe106a	6ecc6d0f	.config	log	report
ci-akaros-main	2019/02/09 20:32	akaros	babe106a	c69659e3	.config	log	report
ci-akaros-main	2019/02/09 15:59	akaros	babe106a	fa6c7b70	.config	log	report
ci-akaros-main	2019/02/09 14:17	akaros	babe106a	fa6c7b70	.config	log	report
ci-akaros-main	2019/02/09 05:12	akaros	babe106a	fa6c7b70	.config	log	report
ci-akaros-main	2019/02/09 00:05	akaros	babe106a	fa6c7b70	.config	log	report
ci-akaros-main	2019/02/08 05:30	akaros	babe106a	aa4feb03	.config	log	report
ci-akaros-main	2019/02/07 05:10	akaros	babe106a	d672172c	.config	log	report
ci-akaros-main	2019/02/06 13:38	akaros	babe106a	d672172c	.config	log	report
ci-akaros-main	2019/02/06 02:53	akaros	babe106a	d672172c	.config	log	report
ci-akaros-main	2019/02/05 19:35	akaros	babe106a	d672172c	.config	log	report
ci-akaros-main	2019/02/05 16:08	akaros	babe106a	d672172c	.config	log	report
ci-akaros-main	2019/02/05 10:29	akaros	babe106a	d672172c	.config	log	report
ci-akaros-main	2019/02/04 22:30	akaros	babe106a	d672172c	.config	log	report
ci-akaros-main	2019/02/04 04:55	akaros	babe106a	c198d5dd	.config	log	report
ci-akaros-main	2019/02/03 22:52	akaros	babe106a	c198d5dd	.config	log	report
ci-akaros-main	2019/02/03 04:22	akaros	babe106a	c198d5dd	.config	log	report
ci-akaros-main	2019/02/02 22:06	akaros	babe106a	c198d5dd	.config	log	report
ci-akaros-main	2019/02/02 06:27	akaros	babe106a	564f9a4f	.config	log	report
ci-akaros-main	2019/02/02 03:14	akaros	babe106a	564f9a4f	.config	log	report
ci-akaros-main	2019/02/01 20:00	akaros	babe106a	0c07abcf	.config	log	report
ci-akaros-main	2019/02/01 03:55	akaros	babe106a	0e8ea0a3	.config	log	report
ci-akaros-main	2019/01/31 23:59	akaros	babe106a	0e8ea0a3	.config	log	report
ci-akaros-main	2019/01/30 13:44	akaros	828f5ad5	aa432daf	.config	log	report
ci-akaros-main	2019/01/30 12:18	akaros	828f5ad5	aa432daf	.config	log	report
ci-akaros-main	2019/01/29 17:40	akaros	828f5ad5	aa432daf	.config	log	report
ci-akaros-main	2019/01/29 15:21	akaros	828f5ad5	aa432daf	.config	log	report
ci-akaros-main	2019/01/29 14:11	akaros	828f5ad5	aa432daf	.config	log	report
ci-akaros-main	2019/01/29 09:37	akaros	828f5ad5	aa432daf	.config	log	report
ci-akaros-main	2019/01/29 06:46	akaros	828f5ad5	aa432daf	.config	log	report
ci-akaros-main	2019/01/28 22:59	akaros	828f5ad5	aa432daf	.config	log	report
ci-akaros-main	2019/01/28 17:42	akaros	828f5ad5	1602ad52	.config	log	report
ci-akaros-main	2019/01/28 13:36	akaros	828f5ad5	1602ad52	.config	log	report
ci-akaros-main	2019/01/28 00:35	akaros	828f5ad5	c73f090a	.config	log	report
ci-akaros-main	2019/01/27 16:07	akaros	828f5ad5	c73f090a	.config	log	report
ci-akaros-main	2019/01/27 12:51	akaros	828f5ad5	c73f090a	.config	log	report
ci-akaros-main	2019/01/27 04:20	akaros	828f5ad5	c73f090a	.config	log	report