audit: type=1800 audit(1542255497.629:30): pid=5831 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="rmnologin" dev="sda1" ino=2423 res=0 ------------[ cut here ]------------ DEBUG_LOCKS_WARN_ON(depth >= MAX_LOCK_DEPTH) ------------[ cut here ]------------ kernel BUG at mm/slab.c:4425! invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 0 PID: -642842048 Comm: ksoftirqd/0 Not tainted 4.20.0-rc2+ #295 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:__check_heap_object+0xa7/0xb5 mm/slab.c:4450 Code: 48 c7 c7 15 73 12 89 e8 97 e3 0a 00 5d c3 41 8b 91 04 01 00 00 48 29 c7 48 39 d7 77 be 48 01 d0 48 29 c8 48 39 f0 72 b3 5d c3 <0f> 0b 48 c7 c7 15 73 12 89 e8 fd eb 0a 00 44 89 e9 48 c7 c7 d0 73 RSP: 0018:ffff8881d9af0030 EFLAGS: 00010093 RAX: 00000000000a57eb RBX: 1ffff1103b35e00d RCX: 000000000000000c RDX: ffff8881d9af0240 RSI: 0000000000000002 RDI: ffff8881d9af01d8 RBP: ffff8881d9af0030 R08: ffff8881d9af0240 R09: ffff8881da970180 R10: 000000004afd69e7 R11: 0000000000000000 R12: ffff8881d9af01d8 R13: 0000000000000002 R14: ffffea000766bc00 R15: 0000000000000001 FS: 0000000000000000(0000) GS:ffff8881dae00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000068 CR3: 00000001cdaf4000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: Modules linked in: ================================================================== ---[ end trace 97e5870738366f72 ]--- RIP: 0010:__check_heap_object+0xa7/0xb5 mm/slab.c:4450 Code: 48 c7 c7 15 73 12 89 e8 97 e3 0a 00 5d c3 41 8b 91 04 01 00 00 48 29 c7 48 39 d7 77 be 48 01 d0 48 29 c8 48 39 f0 72 b3 5d c3 <0f> 0b 48 c7 c7 15 73 12 89 e8 fd eb 0a 00 44 89 e9 48 c7 c7 d0 73 RSP: 0018:ffff8881d9af0030 EFLAGS: 00010093 RAX: 00000000000a57eb RBX: 1ffff1103b35e00d RCX: 000000000000000c RDX: ffff8881d9af0240 RSI: 0000000000000002 RDI: ffff8881d9af01d8 RBP: ffff8881d9af0030 R08: ffff8881d9af0240 R09: ffff8881da970180 R10: 000000004afd69e7 R11: 0000000000000000 R12: ffff8881d9af01d8 R13: 0000000000000002 R14: ffffea000766bc00 R15: 0000000000000001 FS: 0000000000000000(0000) GS:ffff8881dae00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000068 CR3: 00000001cdaf4000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400