BUG: sleeping function called from invalid context at arch/x86/mm/fault.c:1342 in_atomic(): 0, irqs_disabled(): 1, pid: 4492, name: syzkaller559833 1 lock held by syzkaller559833/4492: #0: 00000000d3c337f7 (&mm->mmap_sem){++++}, at: __do_page_fault+0x381/0xe40 arch/x86/mm/fault.c:1328 irq event stamp: 3862 hardirqs last enabled at (3861): [] slab_alloc mm/slab.c:3385 [inline] hardirqs last enabled at (3861): [] kmem_cache_alloc+0x26f/0x760 mm/slab.c:3552 hardirqs last disabled at (3862): [] error_entry+0x72/0xd0 arch/x86/entry/entry_64.S:1261 softirqs last enabled at (3800): [] __do_softirq+0x778/0xaf5 kernel/softirq.c:311 softirqs last disabled at (3779): [] invoke_softirq kernel/softirq.c:365 [inline] softirqs last disabled at (3779): [] irq_exit+0x1d1/0x200 kernel/softirq.c:405 CPU: 0 PID: 4492 Comm: syzkaller559833 Not tainted 4.16.0+ #19 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x1b9/0x294 lib/dump_stack.c:113 ___might_sleep.cold.88+0x11f/0x13a kernel/sched/core.c:6188 __might_sleep+0x95/0x190 kernel/sched/core.c:6141 __do_page_fault+0x3ae/0xe40 arch/x86/mm/fault.c:1342 do_page_fault+0xee/0x8a7 arch/x86/mm/fault.c:1474 page_fault+0x25/0x50 arch/x86/entry/entry_64.S:1159 RIP: 0010:vmx_vcpu_run+0x95f/0x25f0 arch/x86/kvm/vmx.c:9746 RSP: 0018:ffff8801d95b7368 EFLAGS: 00010002 RAX: 000000000000118c RBX: ffff8801d90076c0 RCX: 0000000000000282 RDX: 0000000000000000 RSI: 00000000000000fc RDI: 00000000014000c0 RBP: ffff8801d95b7c18 R08: 0000000000036f48 R09: ffffed003b200ed8 R10: 0000000000000000 R11: 0000000000000000 R12: ffff8801d90076c0 R13: ffff8801dad80000 R14: 0000000000000000 R15: ffff8801d90076bf kasan_slab_alloc+0x12/0x20 mm/kasan/kasan.c:490 slab_post_alloc_hook mm/slab.h:444 [inline] slab_alloc mm/slab.c:3392 [inline] kmem_cache_alloc+0x11b/0x760 mm/slab.c:3552 getname_flags+0xd0/0x5a0 fs/namei.c:140 getname+0x19/0x20 fs/namei.c:211 do_sys_open+0x38e/0x770 fs/open.c:1087 SYSC_openat fs/open.c:1120 [inline] SyS_openat+0x30/0x40 fs/open.c:1114 do_syscall_64+0x29e/0x9d0 arch/x86/entry/common.c:287 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x4487c9 RSP: 002b:00007f4fe57efda8 EFLAGS: 00000297 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 00000000006dec44 RCX: 00000000004487c9 RDX: 0000000000000000 RSI: 00000000200001c0 RDI: ffffffffffffff9c RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000297 R12: 00000000006dec40 R13: 0030656c69662f2e R14: 6d766b2f7665642f R15: 000000000000000c BUG: unable to handle kernel paging request at 000000000000590a PGD 1d9ba4067 P4D 1d9ba4067 PUD 1d9b9a067 PMD 0 Oops: 0002 [#1] SMP KASAN Dumping ftrace buffer: (ftrace buffer empty) Modules linked in: CPU: 0 PID: 4492 Comm: syzkaller559833 Tainted: G W 4.16.0+ #19 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:vmx_vcpu_run+0x95f/0x25f0 arch/x86/kvm/vmx.c:9746 RSP: 0018:ffff8801d95b7368 EFLAGS: 00010002 RAX: 000000000000118c RBX: ffff8801d90076c0 RCX: 0000000000000282 RDX: 0000000000000000 RSI: 00000000000000fc RDI: 00000000014000c0 RBP: ffff8801d95b7c18 R08: 0000000000036f48 R09: ffffed003b200ed8 R10: 0000000000000000 R11: 0000000000000000 R12: ffff8801d90076c0 R13: ffff8801dad80000 R14: 0000000000000000 R15: ffff8801d90076bf FS: 00007f4fe57f0700(0000) GS:ffff8801db000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000000000590a CR3: 00000001ad282000 CR4: 00000000001426f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: kasan_slab_alloc+0x12/0x20 mm/kasan/kasan.c:490 slab_post_alloc_hook mm/slab.h:444 [inline] slab_alloc mm/slab.c:3392 [inline] kmem_cache_alloc+0x11b/0x760 mm/slab.c:3552 getname_flags+0xd0/0x5a0 fs/namei.c:140 getname+0x19/0x20 fs/namei.c:211 do_sys_open+0x38e/0x770 fs/open.c:1087 SYSC_openat fs/open.c:1120 [inline] SyS_openat+0x30/0x40 fs/open.c:1114 do_syscall_64+0x29e/0x9d0 arch/x86/entry/common.c:287 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x4487c9 RSP: 002b:00007f4fe57efda8 EFLAGS: 00000297 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 00000000006dec44 RCX: 00000000004487c9 RDX: 0000000000000000 RSI: 00000000200001c0 RDI: ffffffffffffff9c RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000297 R12: 00000000006dec40 R13: 0030656c69662f2e R14: 6d766b2f7665642f R15: 000000000000000c Code: 8b a9 68 03 00 00 4c 8b b1 70 03 00 00 4c 8b b9 78 03 00 00 48 8b 89 08 03 00 00 75 05 0f 01 c2 eb 03 0f 01 c3 48 89 4c 24 08 59 <0f> 96 81 88 56 00 00 48 89 81 00 03 00 00 48 89 99 18 03 00 00 RIP: vmx_vcpu_run+0x95f/0x25f0 arch/x86/kvm/vmx.c:9746 RSP: ffff8801d95b7368 CR2: 000000000000590a ---[ end trace 752da7ce25dee858 ]---