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 1cd05c067 P4D 1cd05c067 PUD 19e64e067 PMD 0 Oops: 0002 [#1] SMP KASAN Dumping ftrace buffer: (ftrace buffer empty) Modules linked in: CPU: 1 PID: 3648 Comm: kworker/1:2 Not tainted 4.14.0+ #130 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: crypto mcryptd_queue_worker task: ffff8801c33ba040 task.stack: ffff8801c3800000 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:ffff8801c38071b8 EFLAGS: 00010002 RAX: 0000000000000000 RBX: ffff8801d5aaa8d0 RCX: 0000000000000000 RDX: 0000000000000001 RSI: 0000000000000000 RDI: ffff8801d5aaa780 RBP: ffff8801c38071e0 R08: 0000000100000000 R09: 0000000000000001 R10: 0000000000000002 R11: 0000000000000003 R12: ffff8801d5aaa780 R13: 0000000000000286 R14: ffff8801d4bf77a0 R15: ffffe8ffffd0f940 FS: 0000000000000000(0000) GS:ffff8801db500000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000060 CR3: 00000001a2110000 CR4: 00000000001406e0 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:628 [inline] mcryptd_hash_update+0xcd/0x1c0 crypto/mcryptd.c:374 mcryptd_queue_worker+0xfe/0x660 crypto/mcryptd.c:182 process_one_work+0xbfd/0x1be0 kernel/workqueue.c:2112 worker_thread+0x223/0x1990 kernel/workqueue.c:2246 kthread+0x37a/0x440 kernel/kthread.c:238 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:437 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 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: ffff8801c38071b8 CR2: 0000000000000060 ---[ end trace 094d82397bd30720 ]--- Kernel panic - not syncing: Fatal exception Dumping ftrace buffer: (ftrace buffer empty) Kernel Offset: disabled Rebooting in 86400 seconds..