__get_user_pages_locked mm/gup.c:870 [inline]
 __get_user_pages_unlocked mm/gup.c:984 [inline]
 get_user_pages_unlocked+0x2af/0x460 mm/gup.c:1009
BUG: unable to handle kernel NULL pointer dereference at 0000000000000060
IP: sha512_mb_mgr_get_comp_job_avx2+0x6e/0xee arch/x86/crypto/sha512-mb/sha512_mb_mgr_flush_avx2.S:251
PGD 0 P4D 0 
Oops: 0002 [#1] SMP KASAN
Dumping ftrace buffer:
   (ftrace buffer empty)
Modules linked in:
CPU: 1 PID: 17 Comm: kworker/1:0 Not tainted 4.15.0-rc8+ #201
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: crypto mcryptd_queue_worker
RIP: 0010:sha512_mb_mgr_get_comp_job_avx2+0x6e/0xee arch/x86/crypto/sha512-mb/sha512_mb_mgr_flush_avx2.S:251
RSP: 0018:ffff8801d9fbf218 EFLAGS: 00010002
RAX: 0000000000000000 RBX: ffff8801d610b210 RCX: 0000000000000000
RDX: 0000000000000001 RSI: 0000000083a127e7 RDI: ffff8801d610b0c0
RBP: ffff8801d9fbf240 R08: 0000000100000000 R09: 0000000000000001
R10: 0000000000000002 R11: 0000000000000003 R12: ffff8801d610b0c0
R13: 0000000000000282 R14: ffff8801c2172778 R15: ffffe8ffffd132e8
FS:  0000000000000000(0000) GS:ffff8801db300000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000060 CR3: 0000000006822001 CR4: 00000000001606e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 sha_complete_job+0x276/0x830 arch/x86/crypto/sha512-mb/sha512_mb.c:510
 sha512_mb_update+0x2f6/0x530 arch/x86/crypto/sha512-mb/sha512_mb.c:610
 crypto_ahash_update include/crypto/hash.h:522 [inline]
 ahash_mcryptd_update crypto/mcryptd.c:625 [inline]
 mcryptd_hash_update+0xcd/0x1c0 crypto/mcryptd.c:371
 mcryptd_queue_worker+0x13d/0x690 crypto/mcryptd.c:179
 process_one_work+0xbbf/0x1b10 kernel/workqueue.c:2113
 worker_thread+0x223/0x1990 kernel/workqueue.c:2247
 kthread+0x33c/0x400 kernel/kthread.c:238
 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:541
Code: 49 0f 42 d3 48 f7 c2 f0 ff ff ff 0f 85 9a 00 00 00 48 83 e2 0f 48 6b da 08 48 8d 9c 1f 48 01 00 00 48 8b 03 48 c7 03 00 00 00 00 <c7> 40 60 02 00 00 00 48 8b 9f 40 01 00 00 48 c1 e3 08 48 09 d3 
RIP: sha512_mb_mgr_get_comp_job_avx2+0x6e/0xee arch/x86/crypto/sha512-mb/sha512_mb_mgr_flush_avx2.S:251 RSP: ffff8801d9fbf218
CR2: 0000000000000060
---[ end trace a5a5c216c1915219 ]---
Kernel panic - not syncing: Fatal exception
 get_user_pages_fast+0x1b4/0x340 mm/gup.c:1835
 rds_info_getsockopt+0x5a5/0x770 net/rds/info.c:196
 rds_getsockopt+0x142/0x280 net/rds/af_rds.c:395
 SYSC_getsockopt net/socket.c:1854 [inline]
 SyS_getsockopt+0x178/0x340 net/socket.c:1836
 entry_SYSCALL_64_fastpath+0x29/0xa0
RIP: 0033:0x452ee9
RSP: 002b:00007fc8f605bc58 EFLAGS: 00000212 ORIG_RAX: 0000000000000037
RAX: ffffffffffffffda RBX: 00007fc8f605baa0 RCX: 0000000000452ee9
RDX: 0000000000002715 RSI: 0000200000000114 RDI: 0000000000000013
RBP: 00007fc8f605ba90 R08: 0000000020000000 R09: 0000000000000000
R10: 0000000020001000 R11: 0000000000000212 R12: 00000000004b7c76
R13: 00007fc8f605bbc8 R14: 00000000004b7c76 R15: 0000000000000000
Dumping ftrace buffer:
   (ftrace buffer empty)
Kernel Offset: disabled
Rebooting in 86400 seconds..