Backtrace

BUG: unable to handle page fault for address: ffff95bff5872278
#PF: supervisor read access in kernel mode
#PF: error_code(0x0000) - not-present page
PGD 13a01067 P4D 13a01067 PUD 0 
Oops: 0000 [#2] SMP PTI
CPU: 2 PID: 40438 Comm: pmdaproc Tainted: G      D           5.11.15-300.fc34.x86_64 #1
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
RIP: 0010:kmem_cache_alloc+0x79/0x1e0
Code: e0 d1 67 49 8b 00 49 83 78 10 00 48 89 04 24 0f 84 5e 01 00 00 48 85 c0 0f 84 55 01 00 00 41 8b 4c 24 28 49 8b 3c 24 48 01 c1 <48> 8b 19 48 89 ce 49 33 9c 24 b8 00 00 00 48 0f ce 48 31 f3 40 f6
RSP: 0018:ffffb903c8fd7cc0 EFLAGS: 00010286
RAX: ffff95bff5872200 RBX: 0000000000008000 RCX: ffff95bff5872278
RDX: 000000000008519a RSI: 0000000000000dc0 RDI: 00000000000306f0
RBP: 0000000000000dc0 R08: ffff95f935d306f0 R09: 0000000000000003
R10: 0000000000000020 R11: 0000000000000000 R12: ffff95f7801d6600
R13: ffffffff9832ed73 R14: ffff95f7801d6600 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff95f935d00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffff95bff5872278 CR3: 0000000101ef8000 CR4: 00000000000006e0
Call Trace:
 __alloc_file+0x23/0xe0
 alloc_empty_file+0x40/0xb0
 path_openat+0x3b/0xf20
 ? page_add_file_rmap+0x19/0x1d0
 ? alloc_set_pte+0x113/0x6c0
 ? filemap_map_pages+0x1f5/0x410
 do_filp_open+0x7e/0x110
 ? handle_mm_fault+0x1615/0x1970
 ? __check_object_size+0x136/0x150
 do_sys_openat2+0x7a/0x130
 __x64_sys_openat+0x45/0x70
 do_syscall_64+0x33/0x40
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x7f231e2f0138
Code: f9 41 89 f0 41 83 e2 40 75 30 89 f0 25 00 00 41 00 3d 00 00 41 00 74 22 44 89 c2 4c 89 ce bf 9c ff ff ff b8 01 01 00 00 0f 05 <48> 3d 00 f0 ff ff 77 30 c3 0f 1f 80 00 00 00 00 48 8d 44 24 08 c7
RSP: 002b:00007fff9be5d418 EFLAGS: 00000287 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007fff9be5d4df RCX: 00007f231e2f0138
RDX: 0000000000080000 RSI: 00007f231e2ad9e0 RDI: 00000000ffffff9c
RBP: 00007fff9be5d480 R08: 0000000000080000 R09: 00007f231e2ad9e0
R10: 0000000000000000 R11: 0000000000000287 R12: 00007f231e3021e0
R13: 00007fff9be5d4f0 R14: 00007f231e2ad9e0 R15: 00007fff9be5d4f0
Modules linked in: md4 cmac nls_utf8 cifs libarc4 dns_resolver fscache libdes uinput snd_seq_dummy snd_hrtimer snd_seq snd_seq_device snd_timer snd soundcore iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi nf_tables ebtable_nat ebtable_broute ip6table_nat ip6table_mangle ip6table_raw ip6table_security iptable_nat nf_nat nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 iptable_mangle iptable_raw iptable_security ip_set rfkill nfnetlink ebtable_filter ebtables ip6table_filter ip6_tables iptable_filter sunrpc joydev pcspkr virtio_balloon i2c_piix4 ip_tables bochs_drm drm_vram_helper drm_kms_helper cec drm_ttm_helper ttm drm virtio_net net_failover virtio_scsi virtio_console serio_raw failover ata_generic pata_acpi qemu_fw_cfg fuse
CR2: ffff95bff5872278