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: 32d, last: 1d08h

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 (76):
Manager	Time	Kernel	Commit	Syzkaller	Config	Log	Report	Syz repro	C repro	Maintainers
ci-akaros-main	2018/07/20 21:46	https://github.com/akaros/akaros.git/master	9196d29ad275f90b1e2bd0fd821fe2b48730d5f2	8cc079c3f60f253f57b715c3d87937541d03fae9	.config	log	report	syz	C	[]
ci-akaros-main	2018/07/24 05:33	https://github.com/akaros/akaros.git/master	c5f7000db927d48d1d9b70016d2de8f5dab6fca4	912c93d745d441150d0b8fa605c38d5ec18f75ab	.config	log	report	syz	C	[]
ci-akaros-main	2018/07/22 20:43	https://github.com/akaros/akaros.git/master	9196d29ad275f90b1e2bd0fd821fe2b48730d5f2	8cc079c3f60f253f57b715c3d87937541d03fae9	.config	log	report	syz	C	[]
ci-akaros-main	2018/07/22 16:23	https://github.com/akaros/akaros.git/master	9196d29ad275f90b1e2bd0fd821fe2b48730d5f2	8cc079c3f60f253f57b715c3d87937541d03fae9	.config	log	report	syz	C	[]
ci-akaros-main	2018/07/22 13:33	https://github.com/akaros/akaros.git/master	9196d29ad275f90b1e2bd0fd821fe2b48730d5f2	8cc079c3f60f253f57b715c3d87937541d03fae9	.config	log	report	syz	C	[]
ci-akaros-main	2018/07/21 18:29	https://github.com/akaros/akaros.git/master	9196d29ad275f90b1e2bd0fd821fe2b48730d5f2	8cc079c3f60f253f57b715c3d87937541d03fae9	.config	log	report	syz	C	[]
ci-akaros-main	2018/07/21 15:49	https://github.com/akaros/akaros.git/master	9196d29ad275f90b1e2bd0fd821fe2b48730d5f2	8cc079c3f60f253f57b715c3d87937541d03fae9	.config	log	report	syz	C	[]
ci-akaros-main	2018/08/12 20:10	https://github.com/akaros/akaros.git/master	8b21413cae5f20467e6c60e4eb110d79e2ae0675	7a88b14122b5b70ed04bcd75932f411256e1662b	.config	log	report	syz		[]
ci-akaros-main	2018/08/08 04:43	https://github.com/akaros/akaros.git/master	8b21413cae5f20467e6c60e4eb110d79e2ae0675	1beb81367ce08594953fd11d686589b9613c3a97	.config	log	report	syz		[]
ci-akaros-main	2018/08/05 08:32	https://github.com/akaros/akaros.git/master	8b21413cae5f20467e6c60e4eb110d79e2ae0675	3476a2dfb9474008d37066d758843c4e0c61e513	.config	log	report	syz		[]
ci-akaros-main	2018/07/31 18:17	https://github.com/akaros/akaros.git/master	6f34e34a70a300eb34882507ca75b6a82938fc1f	1a381291a38fbca36a7fd1ca142e4cee7794e3b1	.config	log	report	syz		[]
ci-akaros-main	2018/07/18 18:34	https://github.com/akaros/akaros.git/master	bf9a9ba0d6af68ec3f4a63bf9c5559050f1552cc	49f3583951e3febc6a93b6e3b4cd213649a6b3c9	.config	log	report			[]
ci-akaros-main	2018/08/18 21:29	https://github.com/akaros/akaros.git/master	e94ea40da19b2cd09a262897c0d6a708a2835b71	de20bcbb68a06e9589f4ad2bb162aa1feed0c5c9	.config	log	report			[]
ci-akaros-main	2018/08/18 18:48	https://github.com/akaros/akaros.git/master	e94ea40da19b2cd09a262897c0d6a708a2835b71	db1858f6b9dec7ff54adf144f378679b405b8509	.config	log	report			[]
ci-akaros-main	2018/08/18 14:00	https://github.com/akaros/akaros.git/master	e94ea40da19b2cd09a262897c0d6a708a2835b71	db1858f6b9dec7ff54adf144f378679b405b8509	.config	log	report			[]
ci-akaros-main	2018/08/18 02:38	https://github.com/akaros/akaros.git/master	e94ea40da19b2cd09a262897c0d6a708a2835b71	db1858f6b9dec7ff54adf144f378679b405b8509	.config	log	report			[]
ci-akaros-main	2018/08/17 06:05	https://github.com/akaros/akaros.git/master	e94ea40da19b2cd09a262897c0d6a708a2835b71	9ccc1d4565436890480aea12b6ae347384b2d1ab	.config	log	report			[]
ci-akaros-main	2018/08/17 04:28	https://github.com/akaros/akaros.git/master	e94ea40da19b2cd09a262897c0d6a708a2835b71	9ccc1d4565436890480aea12b6ae347384b2d1ab	.config	log	report			[]
ci-akaros-main	2018/08/17 02:24	https://github.com/akaros/akaros.git/master	e94ea40da19b2cd09a262897c0d6a708a2835b71	9ccc1d4565436890480aea12b6ae347384b2d1ab	.config	log	report			[]
ci-akaros-main	2018/08/16 21:26	https://github.com/akaros/akaros.git/master	e94ea40da19b2cd09a262897c0d6a708a2835b71	9ccc1d4565436890480aea12b6ae347384b2d1ab	.config	log	report			[]
ci-akaros-main	2018/08/16 17:47	https://github.com/akaros/akaros.git/master	e94ea40da19b2cd09a262897c0d6a708a2835b71	9ccc1d4565436890480aea12b6ae347384b2d1ab	.config	log	report			[]
ci-akaros-main	2018/08/15 23:15	https://github.com/akaros/akaros.git/master	e94ea40da19b2cd09a262897c0d6a708a2835b71	9ccc1d4565436890480aea12b6ae347384b2d1ab	.config	log	report			[]
ci-akaros-main	2018/08/15 13:08	https://github.com/akaros/akaros.git/master	e94ea40da19b2cd09a262897c0d6a708a2835b71	9ccc1d4565436890480aea12b6ae347384b2d1ab	.config	log	report			[]
ci-akaros-main	2018/08/14 10:02	https://github.com/akaros/akaros.git/master	8b21413cae5f20467e6c60e4eb110d79e2ae0675	7a88b14122b5b70ed04bcd75932f411256e1662b	.config	log	report			[]
ci-akaros-main	2018/08/11 22:12	https://github.com/akaros/akaros.git/master	8b21413cae5f20467e6c60e4eb110d79e2ae0675	7a88b14122b5b70ed04bcd75932f411256e1662b	.config	log	report			[]
ci-akaros-main	2018/08/09 06:30	https://github.com/akaros/akaros.git/master	8b21413cae5f20467e6c60e4eb110d79e2ae0675	2eeda842c89d39fee894ae34dca9829e3d77cf43	.config	log	report			[]
ci-akaros-main	2018/08/08 22:33	https://github.com/akaros/akaros.git/master	8b21413cae5f20467e6c60e4eb110d79e2ae0675	2eeda842c89d39fee894ae34dca9829e3d77cf43	.config	log	report			[]
ci-akaros-main	2018/08/07 16:10	https://github.com/akaros/akaros.git/master	8b21413cae5f20467e6c60e4eb110d79e2ae0675	1beb81367ce08594953fd11d686589b9613c3a97	.config	log	report			[]
ci-akaros-main	2018/08/06 23:01	https://github.com/akaros/akaros.git/master	8b21413cae5f20467e6c60e4eb110d79e2ae0675	1beb81367ce08594953fd11d686589b9613c3a97	.config	log	report			[]
ci-akaros-main	2018/08/06 17:29	https://github.com/akaros/akaros.git/master	8b21413cae5f20467e6c60e4eb110d79e2ae0675	1beb81367ce08594953fd11d686589b9613c3a97	.config	log	report			[]
ci-akaros-main	2018/08/06 12:08	https://github.com/akaros/akaros.git/master	8b21413cae5f20467e6c60e4eb110d79e2ae0675	1beb81367ce08594953fd11d686589b9613c3a97	.config	log	report			[]
ci-akaros-main	2018/08/06 08:42	https://github.com/akaros/akaros.git/master	8b21413cae5f20467e6c60e4eb110d79e2ae0675	1beb81367ce08594953fd11d686589b9613c3a97	.config	log	report			[]
ci-akaros-main	2018/08/04 11:54	https://github.com/akaros/akaros.git/master	8b21413cae5f20467e6c60e4eb110d79e2ae0675	df7f6947ba33144e6f1845faf37f62194d3f3c36	.config	log	report			[]
ci-akaros-main	2018/08/04 08:31	https://github.com/akaros/akaros.git/master	8b21413cae5f20467e6c60e4eb110d79e2ae0675	df7f6947ba33144e6f1845faf37f62194d3f3c36	.config	log	report			[]
ci-akaros-main	2018/07/31 15:57	https://github.com/akaros/akaros.git/master	6f34e34a70a300eb34882507ca75b6a82938fc1f	1a381291a38fbca36a7fd1ca142e4cee7794e3b1	.config	log	report			[]
ci-akaros-main	2018/07/30 17:52	https://github.com/akaros/akaros.git/master	8dc899e19d0fee4c6b41e9b47abc7031a86fc40b	1a381291a38fbca36a7fd1ca142e4cee7794e3b1	.config	log	report			[]
ci-akaros-main	2018/07/29 23:58	https://github.com/akaros/akaros.git/master	8dc899e19d0fee4c6b41e9b47abc7031a86fc40b	1a381291a38fbca36a7fd1ca142e4cee7794e3b1	.config	log	report			[]
ci-akaros-main	2018/07/28 18:24	https://github.com/akaros/akaros.git/master	8dc899e19d0fee4c6b41e9b47abc7031a86fc40b	ebf656d79bf25a135f1b295b5fd582004e1ac7b3	.config	log	report			[]
ci-akaros-main	2018/07/28 13:41	https://github.com/akaros/akaros.git/master	8dc899e19d0fee4c6b41e9b47abc7031a86fc40b	ebf656d79bf25a135f1b295b5fd582004e1ac7b3	.config	log	report			[]
ci-akaros-main	2018/07/28 07:55	https://github.com/akaros/akaros.git/master	8dc899e19d0fee4c6b41e9b47abc7031a86fc40b	ebf656d79bf25a135f1b295b5fd582004e1ac7b3	.config	log	report			[]
ci-akaros-main	2018/07/27 19:52	https://github.com/akaros/akaros.git/master	8dc899e19d0fee4c6b41e9b47abc7031a86fc40b	788351b1b0e62c36e19eba6610690382cdd2dd79	.config	log	report			[]
ci-akaros-main	2018/07/27 17:21	https://github.com/akaros/akaros.git/master	8dc899e19d0fee4c6b41e9b47abc7031a86fc40b	788351b1b0e62c36e19eba6610690382cdd2dd79	.config	log	report			[]
ci-akaros-main	2018/07/27 09:31	https://github.com/akaros/akaros.git/master	8dc899e19d0fee4c6b41e9b47abc7031a86fc40b	788351b1b0e62c36e19eba6610690382cdd2dd79	.config	log	report			[]
ci-akaros-main	2018/07/27 03:28	https://github.com/akaros/akaros.git/master	8dc899e19d0fee4c6b41e9b47abc7031a86fc40b	375a3e31e12965ce58d8853c310a4e7e655853d4	.config	log	report			[]
ci-akaros-main	2018/07/26 23:12	https://github.com/akaros/akaros.git/master	8dc899e19d0fee4c6b41e9b47abc7031a86fc40b	375a3e31e12965ce58d8853c310a4e7e655853d4	.config	log	report			[]
ci-akaros-main	2018/07/26 08:57	https://github.com/akaros/akaros.git/master	8dc899e19d0fee4c6b41e9b47abc7031a86fc40b	375a3e31e12965ce58d8853c310a4e7e655853d4	.config	log	report			[]
ci-akaros-main	2018/07/25 23:43	https://github.com/akaros/akaros.git/master	8dc899e19d0fee4c6b41e9b47abc7031a86fc40b	375a3e31e12965ce58d8853c310a4e7e655853d4	.config	log	report			[]
ci-akaros-main	2018/07/25 21:05	https://github.com/akaros/akaros.git/master	8dc899e19d0fee4c6b41e9b47abc7031a86fc40b	375a3e31e12965ce58d8853c310a4e7e655853d4	.config	log	report			[]
ci-akaros-main	2018/07/25 01:24	https://github.com/akaros/akaros.git/master	c5f7000db927d48d1d9b70016d2de8f5dab6fca4	375a3e31e12965ce58d8853c310a4e7e655853d4	.config	log	report			[]
ci-akaros-main	2018/07/25 00:43	https://github.com/akaros/akaros.git/master	c5f7000db927d48d1d9b70016d2de8f5dab6fca4	375a3e31e12965ce58d8853c310a4e7e655853d4	.config	log	report			[]
ci-akaros-main	2018/07/24 06:42	https://github.com/akaros/akaros.git/master	c5f7000db927d48d1d9b70016d2de8f5dab6fca4	912c93d745d441150d0b8fa605c38d5ec18f75ab	.config	log	report			[]
ci-akaros-main	2018/07/24 01:04	https://github.com/akaros/akaros.git/master	c5f7000db927d48d1d9b70016d2de8f5dab6fca4	912c93d745d441150d0b8fa605c38d5ec18f75ab	.config	log	report			[]
ci-akaros-main	2018/07/24 00:57	https://github.com/akaros/akaros.git/master	c5f7000db927d48d1d9b70016d2de8f5dab6fca4	912c93d745d441150d0b8fa605c38d5ec18f75ab	.config	log	report			[]
ci-akaros-main	2018/07/24 00:51	https://github.com/akaros/akaros.git/master	c5f7000db927d48d1d9b70016d2de8f5dab6fca4	912c93d745d441150d0b8fa605c38d5ec18f75ab	.config	log	report			[]
ci-akaros-main	2018/07/23 21:13	https://github.com/akaros/akaros.git/master	c5f7000db927d48d1d9b70016d2de8f5dab6fca4	912c93d745d441150d0b8fa605c38d5ec18f75ab	.config	log	report			[]
ci-akaros-main	2018/07/23 19:26	https://github.com/akaros/akaros.git/master	9196d29ad275f90b1e2bd0fd821fe2b48730d5f2	f69c5fcd766adfb7894e1b0cd35f42c633f16419	.config	log	report			[]
ci-akaros-main	2018/07/23 16:43	https://github.com/akaros/akaros.git/master	9196d29ad275f90b1e2bd0fd821fe2b48730d5f2	f69c5fcd766adfb7894e1b0cd35f42c633f16419	.config	log	report			[]