[Bug 199183] New: Invalid pointer dereference in ext4_xattr_inode_hash when mounting and later operating on a crafted image

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https://bugzilla.kernel.org/show_bug.cgi?id=199183

            Bug ID: 199183
           Summary: Invalid pointer dereference in ext4_xattr_inode_hash
                    when mounting and later operating on a crafted image
           Product: File System
           Version: 2.5
    Kernel Version: 4.15.x
          Hardware: All
                OS: Linux
              Tree: Mainline
            Status: NEW
          Severity: normal
          Priority: P1
         Component: ext4
          Assignee: fs_ext4@xxxxxxxxxxxxxxxxxxxx
          Reporter: wen.xu@xxxxxxxxxx
        Regression: No

Created attachment 274883
  --> https://bugzilla.kernel.org/attachment.cgi?id=274883&action=edit
The crafted image which causes kernel panic

- Overview
Invalid pointer dereference in ext4_xattr_inode_hash, when mounting and later
operating on a crafted ext4 image

- Reproduce (requires root)
# mkdir mnt
# mount -t ext4 35.img mnt
# gcc -o poc poc.c
# ./poc ./mnt

- Reason
https://elixir.bootlin.com/linux/v4.15/source/fs/ext4/xattr.c#L1493

hash = ext4_xattr_inode_hash(EXT4_SB(inode->i_sb), value, value_len);

kernel seems missing sanitary check on EXT4_SB(inode->i_sb), which may be NULL

- Kernel dump (generated on Ubuntu 18.04 which uses Linux 4.15)
[  326.708075] EXT4-fs warning (device loop0): ext4_fill_super:3906:
fragment/cluster size (268435456) != block size (1024)
[  326.708135] EXT4-fs (loop0): ext4_check_descriptors: Block bitmap for group
0 overlaps superblock
[  326.709379] EXT4-fs (loop0): warning: mounting unchecked fs, running e2fsck
is recommended
[  326.709582] [EXT4 FS bs=1024, gc=9, bpg=255, ipg=256, mo=e000e01c, mo2=0000]
[  326.709592] System zones: 0-31, 11-43, 255-256, 510-511, 765-766, 1020-1021,
1275-1276, 1530-1531, 1785-1786, 2040-2041
[  326.711742] EXT4-fs (loop0): mounted filesystem without journal. Opts:
(null)
[  349.637318] EXT4-fs error (device loop0): ext4_readdir:183: inode #2: comm
ls: path /home/wen/data/ext4-kernel/20180311/ext4_xattr_inode_hash/mnt:
directory contains a hole at offset 1024
[  349.637575] EXT4-fs error (device loop0): ext4_readdir:183: inode #2: comm
ls: path /home/wen/data/ext4-kernel/20180311/ext4_xattr_inode_hash/mnt:
directory contains a hole at offset 2048
[  365.048877] EXT4-fs error (device loop0): ext4_readdir:183: inode #2: comm
poc: path /home/wen/data/ext4-kernel/20180311/ext4_xattr_inode_hash/mnt:
directory contains a hole at offset 1024
[  365.064510] EXT4-fs error (device loop0): ext4_mb_generate_buddy:756: group
6, block bitmap and bg descriptor inconsistent: 255 vs 65535 free clusters
[  365.064597] EXT4-fs error (device loop0): ext4_mb_generate_buddy:756: group
7, block bitmap and bg descriptor inconsistent: 255 vs 0 free clusters
[  365.064695] EXT4-fs error (device loop0): ext4_mb_generate_buddy:756: group
4, block bitmap and bg descriptor inconsistent: 255 vs 246 free clusters
[  365.064754] EXT4-fs error (device loop0): ext4_mb_generate_buddy:756: group
5, block bitmap and bg descriptor inconsistent: 255 vs 0 free clusters
[  365.064841] WARNING: CPU: 0 PID: 1410 at
/build/linux-LL9XfP/linux-4.15.0/fs/ext4/ext4.h:2692
ext4_block_bitmap_csum_set+0xa1/0xb0
[  365.064842] Modules linked in: vmw_balloon coretemp intel_rapl_perf
input_leds joydev serio_raw snd_ens1371 btusb snd_ac97_codec uvcvideo btrtl
videobuf2_vmalloc btbcm btintel gameport snd_rawmidi videobuf2_memops bluetooth
videobuf2_v4l2 videobuf2_core snd_seq_device ac97_bus snd_pcm videodev media
ecdh_generic snd_timer snd soundcore shpchp mac_hid vmw_vsock_vmci_transport
vsock vmw_vmci sch_fq_codel ib_iser rdma_cm iw_cm ib_cm ib_core iscsi_tcp
libiscsi_tcp libiscsi scsi_transport_iscsi ip_tables x_tables autofs4 btrfs
zstd_compress raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor
async_tx xor raid6_pq libcrc32c raid1 raid0 multipath linear hid_generic usbhid
hid crct10dif_pclmul crc32_pclmul ghash_clmulni_intel pcbc aesni_intel
aes_x86_64 crypto_simd glue_helper cryptd vmwgfx
[  365.065016]  psmouse ttm drm_kms_helper mptspi mptscsih ahci libahci e1000
mptbase scsi_transport_spi syscopyarea sysfillrect sysimgblt fb_sys_fops drm
i2c_piix4 pata_acpi
[  365.065034] CPU: 0 PID: 1410 Comm: poc Not tainted 4.15.0-12-generic
#13-Ubuntu
[  365.065035] Hardware name: VMware, Inc. VMware Virtual Platform/440BX
Desktop Reference Platform, BIOS 6.00 07/02/2015
[  365.065038] RIP: 0010:ext4_block_bitmap_csum_set+0xa1/0xb0
[  365.065038] RSP: 0018:ffffb90740caf6d0 EFLAGS: 00010246
[  365.065039] RAX: 0000000000000000 RBX: ffff8b4bb91a7800 RCX:
ffff8b4bb8dc5340
[  365.065040] RDX: ffff8b4bb80e2800 RSI: 0000000000000000 RDI:
ffff8b4bb91a6000
[  365.065040] RBP: ffffb90740caf700 R08: ffff8b4bb91a7800 R09:
0000000000000000
[  365.065042] R10: ffff8b4bb80e2420 R11: ffffb90740caf5e0 R12:
ffff8b4bb80e2800
[  365.065043] R13: 0000000000000000 R14: 0000000000000000 R15:
ffff8b4bb8dc5340
[  365.065044] FS:  00007f301ea94540(0000) GS:ffff8b4bbc600000(0000)
knlGS:0000000000000000
[  365.065045] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  365.065045] CR2: 00007f8281371d50 CR3: 0000000038294005 CR4:
00000000001606f0
[  365.065081] Call Trace:
[  365.065087]  ? ext4_num_base_meta_clusters+0x6e/0x90
[  365.065092]  ext4_read_block_bitmap_nowait+0x4a2/0x5e0
[  365.065095]  ext4_mb_init_cache+0x14c/0x720
[  365.065101]  ? pagecache_get_page+0xdf/0x2a0
[  365.065102]  ext4_mb_init_group+0x1c4/0x2c0
[  365.065104]  ext4_mb_good_group+0x153/0x170
[  365.065105]  ext4_mb_regular_allocator+0x1a8/0x430
[  365.065107]  ext4_mb_new_blocks+0x6c5/0xc30
[  365.065113]  ? _cond_resched+0x19/0x40
[  365.065116]  ? __kmalloc+0x19b/0x220
[  365.065117]  ? ext4_find_extent+0x243/0x2b0
[  365.065118]  ? ext4_find_extent+0x243/0x2b0
[  365.065120]  ext4_ext_map_blocks+0xad5/0xec0
[  365.065121]  ext4_map_blocks+0x3b2/0x5d0
[  365.065134]  ? alloc_buffer_head+0x21/0x60
[  365.065135]  _ext4_get_block+0x75/0x100
[  365.065136]  ext4_get_block+0x16/0x20
[  365.065137]  ext4_block_write_begin+0x135/0x460
[  365.065138]  ? add_to_page_cache_lru+0x79/0xe0
[  365.065139]  ? _ext4_get_block+0x100/0x100
[  365.065141]  ? __ext4_journal_start_sb+0x36/0x120
[  365.065142]  ext4_write_begin+0x16e/0x5b0
[  365.065145]  generic_perform_write+0xb3/0x1b0
[  365.065147]  __generic_file_write_iter+0x1aa/0x1d0
[  365.065149]  ext4_file_write_iter+0x203/0x3f0
[  365.065153]  new_sync_write+0xe7/0x140
[  365.065155]  __vfs_write+0x29/0x40
[  365.065156]  vfs_write+0xb1/0x1a0
[  365.065158]  SyS_write+0x55/0xc0
[  365.065163]  do_syscall_64+0x73/0x130
[  365.065166]  entry_SYSCALL_64_after_hwframe+0x3d/0xa2
[  365.065170] RIP: 0033:0x7f301e596154
[  365.065170] RSP: 002b:00007ffd93f01868 EFLAGS: 00000246 ORIG_RAX:
0000000000000001
[  365.065171] RAX: ffffffffffffffda RBX: 0000000000000000 RCX:
00007f301e596154
[  365.065172] RDX: 0000000000000205 RSI: 0000000000602140 RDI:
0000000000000003
[  365.065172] RBP: 00007ffd93f019d0 R08: 0000000000000003 R09:
0000000000000000
[  365.065173] R10: 0000000000000003 R11: 0000000000000246 R12:
0000000000400c20
[  365.065174] R13: 00007ffd93f01ad0 R14: 0000000000000000 R15:
0000000000000000
[  365.065174] Code: 89 44 24 18 48 83 3b 39 76 09 c1 e8 10 66 41 89 44 24 38
48 8b 45 e8 65 48 33 04 25 28 00 00 00 75 11 48 83 c4 20 5b 41 5c 5d c3 <0f> 0b
eb e4 0f 0b 0f 0b e8 22 20 d8 ff 90 90 0f 1f 44 00 00 55
[  365.065193] ---[ end trace 1ecf08f3cdf242f0 ]---
[  365.065212] WARNING: CPU: 0 PID: 1410 at
/build/linux-LL9XfP/linux-4.15.0/fs/ext4/ext4.h:2692
ext4_group_desc_csum+0x16e/0x210
[  365.065213] Modules linked in: vmw_balloon coretemp intel_rapl_perf
input_leds joydev serio_raw snd_ens1371 btusb snd_ac97_codec uvcvideo btrtl
videobuf2_vmalloc btbcm btintel gameport snd_rawmidi videobuf2_memops bluetooth
videobuf2_v4l2 videobuf2_core snd_seq_device ac97_bus snd_pcm videodev media
ecdh_generic snd_timer snd soundcore shpchp mac_hid vmw_vsock_vmci_transport
vsock vmw_vmci sch_fq_codel ib_iser rdma_cm iw_cm ib_cm ib_core iscsi_tcp
libiscsi_tcp libiscsi scsi_transport_iscsi ip_tables x_tables autofs4 btrfs
zstd_compress raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor
async_tx xor raid6_pq libcrc32c raid1 raid0 multipath linear hid_generic usbhid
hid crct10dif_pclmul crc32_pclmul ghash_clmulni_intel pcbc aesni_intel
aes_x86_64 crypto_simd glue_helper cryptd vmwgfx
[  365.065236]  psmouse ttm drm_kms_helper mptspi mptscsih ahci libahci e1000
mptbase scsi_transport_spi syscopyarea sysfillrect sysimgblt fb_sys_fops drm
i2c_piix4 pata_acpi
[  365.065242] CPU: 0 PID: 1410 Comm: poc Tainted: G        W       
4.15.0-12-generic #13-Ubuntu
[  365.065242] Hardware name: VMware, Inc. VMware Virtual Platform/440BX
Desktop Reference Platform, BIOS 6.00 07/02/2015
[  365.065245] RIP: 0010:ext4_group_desc_csum+0x16e/0x210
[  365.065246] RSP: 0018:ffffb90740caf6a8 EFLAGS: 00010246
[  365.065246] RAX: ffff8b4bb91a7800 RBX: ffff8b4bb91a7800 RCX:
ffff8b4bb91a7800
[  365.065247] RDX: ffff8b4bb80e2400 RSI: 0000000000000000 RDI:
ffff8b4bb91a6000
[  365.065248] RBP: ffffb90740caf6e8 R08: ffff8b4bb91a7800 R09:
0000000000000000
[  365.065248] R10: ffff8b4bb80e2420 R11: ffffb90740caf5e0 R12:
ffff8b4bb80e2800
[  365.065249] R13: ffff8b4bb91a6000 R14: 0000000000000000 R15:
ffff8b4bb8dc5340
[  365.065250] FS:  00007f301ea94540(0000) GS:ffff8b4bbc600000(0000)
knlGS:0000000000000000
[  365.065250] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  365.065251] CR2: 00007f8281371d50 CR3: 0000000038294005 CR4:
00000000001606f0
[  365.065273] Call Trace:
[  365.065275]  ext4_group_desc_csum_set+0x33/0x40
[  365.065277]  ext4_read_block_bitmap_nowait+0x4b0/0x5e0
[  365.065278]  ext4_mb_init_cache+0x14c/0x720
[  365.065280]  ? pagecache_get_page+0xdf/0x2a0
[  365.065281]  ext4_mb_init_group+0x1c4/0x2c0
[  365.065282]  ext4_mb_good_group+0x153/0x170
[  365.065284]  ext4_mb_regular_allocator+0x1a8/0x430
[  365.065285]  ext4_mb_new_blocks+0x6c5/0xc30
[  365.065287]  ? _cond_resched+0x19/0x40
[  365.065288]  ? __kmalloc+0x19b/0x220
[  365.065289]  ? ext4_find_extent+0x243/0x2b0
[  365.065290]  ? ext4_find_extent+0x243/0x2b0
[  365.065291]  ext4_ext_map_blocks+0xad5/0xec0
[  365.065293]  ext4_map_blocks+0x3b2/0x5d0
[  365.065294]  ? alloc_buffer_head+0x21/0x60
[  365.065295]  _ext4_get_block+0x75/0x100
[  365.065296]  ext4_get_block+0x16/0x20
[  365.065297]  ext4_block_write_begin+0x135/0x460
[  365.065299]  ? add_to_page_cache_lru+0x79/0xe0
[  365.065299]  ? _ext4_get_block+0x100/0x100
[  365.065301]  ? __ext4_journal_start_sb+0x36/0x120
[  365.065302]  ext4_write_begin+0x16e/0x5b0
[  365.065303]  generic_perform_write+0xb3/0x1b0
[  365.065305]  __generic_file_write_iter+0x1aa/0x1d0
[  365.065307]  ext4_file_write_iter+0x203/0x3f0
[  365.065308]  new_sync_write+0xe7/0x140
[  365.065310]  __vfs_write+0x29/0x40
[  365.065311]  vfs_write+0xb1/0x1a0
[  365.065313]  SyS_write+0x55/0xc0
[  365.065314]  do_syscall_64+0x73/0x130
[  365.065316]  entry_SYSCALL_64_after_hwframe+0x3d/0xa2
[  365.065317] RIP: 0033:0x7f301e596154
[  365.065318] RSP: 002b:00007ffd93f01868 EFLAGS: 00000246 ORIG_RAX:
0000000000000001
[  365.065318] RAX: ffffffffffffffda RBX: 0000000000000000 RCX:
00007f301e596154
[  365.065319] RDX: 0000000000000205 RSI: 0000000000602140 RDI:
0000000000000003
[  365.065320] RBP: 00007ffd93f019d0 R08: 0000000000000003 R09:
0000000000000000
[  365.065320] R10: 0000000000000003 R11: 0000000000000246 R12:
0000000000400c20
[  365.065321] R13: 00007ffd93f01ad0 R14: 0000000000000000 R15:
0000000000000000
[  365.065321] Code: 89 c2 8b 45 d8 85 d2 0f 85 a0 00 00 00 48 8b 4d e0 65 48
33 0c 25 28 00 00 00 0f 85 9b 00 00 00 48 83 c4 28 5b 41 5c 41 5d 5d c3 <0f> 0b
48 8b 73 68 31 c0 f6 46 64 10 74 d4 48 83 c6 68 ba 10 00
[  365.065339] ---[ end trace 1ecf08f3cdf242f1 ]---
[  365.065519] WARNING: CPU: 0 PID: 1410 at
/build/linux-LL9XfP/linux-4.15.0/fs/ext4/ext4.h:2692
ext4_block_bitmap_csum_verify+0xae/0xd0
[  365.065519] Modules linked in: vmw_balloon coretemp intel_rapl_perf
input_leds joydev serio_raw snd_ens1371 btusb snd_ac97_codec uvcvideo btrtl
videobuf2_vmalloc btbcm btintel gameport snd_rawmidi videobuf2_memops bluetooth
videobuf2_v4l2 videobuf2_core snd_seq_device ac97_bus snd_pcm videodev media
ecdh_generic snd_timer snd soundcore shpchp mac_hid vmw_vsock_vmci_transport
vsock vmw_vmci sch_fq_codel ib_iser rdma_cm iw_cm ib_cm ib_core iscsi_tcp
libiscsi_tcp libiscsi scsi_transport_iscsi ip_tables x_tables autofs4 btrfs
zstd_compress raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor
async_tx xor raid6_pq libcrc32c raid1 raid0 multipath linear hid_generic usbhid
hid crct10dif_pclmul crc32_pclmul ghash_clmulni_intel pcbc aesni_intel
aes_x86_64 crypto_simd glue_helper cryptd vmwgfx
[  365.065542]  psmouse ttm drm_kms_helper mptspi mptscsih ahci libahci e1000
mptbase scsi_transport_spi syscopyarea sysfillrect sysimgblt fb_sys_fops drm
i2c_piix4 pata_acpi
[  365.065549] CPU: 0 PID: 1410 Comm: poc Tainted: G        W       
4.15.0-12-generic #13-Ubuntu
[  365.065549] Hardware name: VMware, Inc. VMware Virtual Platform/440BX
Desktop Reference Platform, BIOS 6.00 07/02/2015
[  365.065550] RIP: 0010:ext4_block_bitmap_csum_verify+0xae/0xd0
[  365.065551] RSP: 0018:ffffb90740caf668 EFLAGS: 00010246
[  365.065552] RAX: 0000000000000000 RBX: ffff8b4bb91a7800 RCX:
ffff8b4bb8dc5340
[  365.065552] RDX: ffff8b4bb80e2800 RSI: 0000000000000000 RDI:
ffff8b4bb91a6000
[  365.065553] RBP: ffffb90740caf6a0 R08: ffff8b4bb68e0c58 R09:
0000000000000000
[  365.065553] R10: ffff8b4bb80e2420 R11: ffffb90740caf5e0 R12:
0000000000000000
[  365.065554] R13: ffff8b4bb8dc5340 R14: 0000000000000000 R15:
ffff8b4bb91a7800
[  365.065555] FS:  00007f301ea94540(0000) GS:ffff8b4bbc600000(0000)
knlGS:0000000000000000
[  365.065555] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  365.065556] CR2: 00007f8281371d50 CR3: 0000000038294005 CR4:
00000000001606f0
[  365.065594] Call Trace:
[  365.065597]  ? ext4_group_desc_csum+0x170/0x210
[  365.065598]  ext4_validate_block_bitmap+0xee/0x350
[  365.065599]  ext4_read_block_bitmap_nowait+0xa5/0x5e0
[  365.065601]  ext4_mb_init_cache+0x14c/0x720
[  365.065602]  ? pagecache_get_page+0xdf/0x2a0
[  365.065603]  ext4_mb_init_group+0x1c4/0x2c0
[  365.065605]  ext4_mb_good_group+0x153/0x170
[  365.065606]  ext4_mb_regular_allocator+0x1a8/0x430
[  365.065608]  ext4_mb_new_blocks+0x6c5/0xc30
[  365.065609]  ? _cond_resched+0x19/0x40
[  365.065610]  ? __kmalloc+0x19b/0x220
[  365.065611]  ? ext4_find_extent+0x243/0x2b0
[  365.065612]  ? ext4_find_extent+0x243/0x2b0
[  365.065614]  ext4_ext_map_blocks+0xad5/0xec0
[  365.065615]  ext4_map_blocks+0x3b2/0x5d0
[  365.065617]  ? alloc_buffer_head+0x21/0x60
[  365.065618]  _ext4_get_block+0x75/0x100
[  365.065619]  ext4_get_block+0x16/0x20
[  365.065620]  ext4_block_write_begin+0x135/0x460
[  365.065621]  ? add_to_page_cache_lru+0x79/0xe0
[  365.065622]  ? _ext4_get_block+0x100/0x100
[  365.065623]  ? __ext4_journal_start_sb+0x36/0x120
[  365.065624]  ext4_write_begin+0x16e/0x5b0
[  365.065626]  generic_perform_write+0xb3/0x1b0
[  365.065627]  __generic_file_write_iter+0x1aa/0x1d0
[  365.065629]  ext4_file_write_iter+0x203/0x3f0
[  365.065630]  new_sync_write+0xe7/0x140
[  365.065632]  __vfs_write+0x29/0x40
[  365.065633]  vfs_write+0xb1/0x1a0
[  365.065635]  SyS_write+0x55/0xc0
[  365.065636]  do_syscall_64+0x73/0x130
[  365.065638]  entry_SYSCALL_64_after_hwframe+0x3d/0xa2
[  365.065639] RIP: 0033:0x7f301e596154
[  365.065639] RSP: 002b:00007ffd93f01868 EFLAGS: 00000246 ORIG_RAX:
0000000000000001
[  365.065640] RAX: ffffffffffffffda RBX: 0000000000000000 RCX:
00007f301e596154
[  365.065641] RDX: 0000000000000205 RSI: 0000000000602140 RDI:
0000000000000003
[  365.065641] RBP: 00007ffd93f019d0 R08: 0000000000000003 R09:
0000000000000000
[  365.065642] R10: 0000000000000003 R11: 0000000000000246 R12:
0000000000400c20
[  365.065642] R13: 00007ffd93f01ad0 R14: 0000000000000000 R15:
0000000000000000
[  365.065643] Code: c0 41 39 c5 0f 94 c0 0f b6 c0 eb 05 b8 01 00 00 00 48 8b
75 e0 65 48 33 34 25 28 00 00 00 75 26 48 83 c4 20 5b 41 5c 41 5d 5d c3 <0f> 0b
b8 01 00 00 00 eb dd 41 0f b7 54 24 38 c1 e2 10 41 09 d5
[  365.065663] ---[ end trace 1ecf08f3cdf242f2 ]---
[  365.066256] EXT4-fs error (device loop0): ext4_mb_generate_buddy:756: group
0, block bitmap and bg descriptor inconsistent: 220 vs 213 free clusters
[  365.066326] WARNING: CPU: 0 PID: 1410 at
/build/linux-LL9XfP/linux-4.15.0/fs/ext4/ext4.h:2692
ext4_superblock_csum_set+0x85/0xa0
[  365.066326] Modules linked in: vmw_balloon coretemp intel_rapl_perf
input_leds joydev serio_raw snd_ens1371 btusb snd_ac97_codec uvcvideo btrtl
videobuf2_vmalloc btbcm btintel gameport snd_rawmidi videobuf2_memops bluetooth
videobuf2_v4l2 videobuf2_core snd_seq_device ac97_bus snd_pcm videodev media
ecdh_generic snd_timer snd soundcore shpchp mac_hid vmw_vsock_vmci_transport
vsock vmw_vmci sch_fq_codel ib_iser rdma_cm iw_cm ib_cm ib_core iscsi_tcp
libiscsi_tcp libiscsi scsi_transport_iscsi ip_tables x_tables autofs4 btrfs
zstd_compress raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor
async_tx xor raid6_pq libcrc32c raid1 raid0 multipath linear hid_generic usbhid
hid crct10dif_pclmul crc32_pclmul ghash_clmulni_intel pcbc aesni_intel
aes_x86_64 crypto_simd glue_helper cryptd vmwgfx
[  365.066351]  psmouse ttm drm_kms_helper mptspi mptscsih ahci libahci e1000
mptbase scsi_transport_spi syscopyarea sysfillrect sysimgblt fb_sys_fops drm
i2c_piix4 pata_acpi
[  365.066357] CPU: 0 PID: 1410 Comm: poc Tainted: G        W       
4.15.0-12-generic #13-Ubuntu
[  365.066358] Hardware name: VMware, Inc. VMware Virtual Platform/440BX
Desktop Reference Platform, BIOS 6.00 07/02/2015
[  365.066359] RIP: 0010:ext4_superblock_csum_set+0x85/0xa0
[  365.066360] RSP: 0018:ffffb90740caf598 EFLAGS: 00010246
[  365.066361] RAX: 0000000000000000 RBX: ffff8b4bb80e2400 RCX:
0000000000000000
[  365.066361] RDX: 0000000000000000 RSI: 0000000000000286 RDI:
ffff8b4bb91a6000
[  365.066362] RBP: ffffb90740caf5c0 R08: fffffffffffffffe R09:
0000000000000001
[  365.066362] R10: ffffb90740caf6d8 R11: 00000000ffffffff R12:
ffff8b4bb91a6000
[  365.066363] R13: ffffffffa785e220 R14: ffff8b4bb80e2400 R15:
0000000000000043
[  365.066364] FS:  00007f301ea94540(0000) GS:ffff8b4bbc600000(0000)
knlGS:0000000000000000
[  365.066365] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  365.066365] CR2: 00007f3030025098 CR3: 0000000038294005 CR4:
00000000001606f0
[  365.066369] Call Trace:
[  365.066375]  ? __percpu_counter_sum+0x5d/0x70
[  365.066377]  ext4_commit_super+0x187/0x2b0
[  365.066378]  __ext4_grp_locked_error+0x16e/0x260
[  365.066380]  ext4_mb_generate_buddy+0x2c6/0x320
[  365.066382]  ext4_mb_init_cache+0x338/0x720
[  365.066384]  ? pagecache_get_page+0xdf/0x2a0
[  365.066385]  ext4_mb_init_group+0x1c4/0x2c0
[  365.066387]  ext4_mb_good_group+0x153/0x170
[  365.066388]  ext4_mb_regular_allocator+0x1a8/0x430
[  365.066390]  ext4_mb_new_blocks+0x6c5/0xc30
[  365.066391]  ? _cond_resched+0x19/0x40
[  365.066392]  ? __kmalloc+0x19b/0x220
[  365.066393]  ? ext4_find_extent+0x243/0x2b0
[  365.066394]  ? ext4_find_extent+0x243/0x2b0
[  365.066396]  ext4_ext_map_blocks+0xad5/0xec0
[  365.066397]  ext4_map_blocks+0x3b2/0x5d0
[  365.066399]  ? alloc_buffer_head+0x21/0x60
[  365.066400]  _ext4_get_block+0x75/0x100
[  365.066401]  ext4_get_block+0x16/0x20
[  365.066402]  ext4_block_write_begin+0x135/0x460
[  365.066404]  ? add_to_page_cache_lru+0x79/0xe0
[  365.066404]  ? _ext4_get_block+0x100/0x100
[  365.066406]  ? __ext4_journal_start_sb+0x36/0x120
[  365.066407]  ext4_write_begin+0x16e/0x5b0
[  365.066409]  generic_perform_write+0xb3/0x1b0
[  365.066410]  __generic_file_write_iter+0x1aa/0x1d0
[  365.066412]  ext4_file_write_iter+0x203/0x3f0
[  365.066414]  new_sync_write+0xe7/0x140
[  365.066416]  __vfs_write+0x29/0x40
[  365.066417]  vfs_write+0xb1/0x1a0
[  365.066418]  SyS_write+0x55/0xc0
[  365.066420]  do_syscall_64+0x73/0x130
[  365.066422]  entry_SYSCALL_64_after_hwframe+0x3d/0xa2
[  365.066423] RIP: 0033:0x7f301e596154
[  365.066423] RSP: 002b:00007ffd93f01868 EFLAGS: 00000246 ORIG_RAX:
0000000000000001
[  365.066424] RAX: ffffffffffffffda RBX: 0000000000000000 RCX:
00007f301e596154
[  365.066425] RDX: 0000000000000205 RSI: 0000000000602140 RDI:
0000000000000003
[  365.066425] RBP: 00007ffd93f019d0 R08: 0000000000000003 R09:
0000000000000000
[  365.066426] R10: 0000000000000003 R11: 0000000000000246 R12:
0000000000400c20
[  365.066427] R13: 00007ffd93f01ad0 R14: 0000000000000000 R15:
0000000000000000
[  365.066427] Code: ff ff ff e8 2e 62 0d 00 85 c0 75 25 8b 45 e8 89 83 fc 03
00 00 48 8b 45 f0 65 48 33 04 25 28 00 00 00 75 0f 48 83 c4 20 5b 5d c3 <0f> 0b
eb e6 0f 0b 0f 0b e8 3e 59 d3 ff 0f 1f 40 00 66 2e 0f 1f
[  365.066446] ---[ end trace 1ecf08f3cdf242f3 ]---
[  365.066450] EXT4-fs error (device loop0): ext4_mb_generate_buddy:756: group
1, block bitmap and bg descriptor inconsistent: 255 vs 0 free clusters
[  365.066919] WARNING: CPU: 0 PID: 1410 at
/build/linux-LL9XfP/linux-4.15.0/fs/ext4/ext4.h:2692 ext4_add_entry+0x26a/0x430
[  365.066919] Modules linked in: vmw_balloon coretemp intel_rapl_perf
input_leds joydev serio_raw snd_ens1371 btusb snd_ac97_codec uvcvideo btrtl
videobuf2_vmalloc btbcm btintel gameport snd_rawmidi videobuf2_memops bluetooth
videobuf2_v4l2 videobuf2_core snd_seq_device ac97_bus snd_pcm videodev media
ecdh_generic snd_timer snd soundcore shpchp mac_hid vmw_vsock_vmci_transport
vsock vmw_vmci sch_fq_codel ib_iser rdma_cm iw_cm ib_cm ib_core iscsi_tcp
libiscsi_tcp libiscsi scsi_transport_iscsi ip_tables x_tables autofs4 btrfs
zstd_compress raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor
async_tx xor raid6_pq libcrc32c raid1 raid0 multipath linear hid_generic usbhid
hid crct10dif_pclmul crc32_pclmul ghash_clmulni_intel pcbc aesni_intel
aes_x86_64 crypto_simd glue_helper cryptd vmwgfx
[  365.066944]  psmouse ttm drm_kms_helper mptspi mptscsih ahci libahci e1000
mptbase scsi_transport_spi syscopyarea sysfillrect sysimgblt fb_sys_fops drm
i2c_piix4 pata_acpi
[  365.066952] CPU: 0 PID: 1410 Comm: poc Tainted: G        W       
4.15.0-12-generic #13-Ubuntu
[  365.066953] Hardware name: VMware, Inc. VMware Virtual Platform/440BX
Desktop Reference Platform, BIOS 6.00 07/02/2015
[  365.066955] RIP: 0010:ext4_add_entry+0x26a/0x430
[  365.066956] RSP: 0018:ffffb90740cafc00 EFLAGS: 00010246
[  365.066958] RAX: ffff8b4bb91a7800 RBX: ffff8b4bb8e2e6e8 RCX:
000000000000000d
[  365.066959] RDX: ffff8b4bb80e2400 RSI: ffff8b4bb8d640c0 RDI:
0000000000000001
[  365.066959] RBP: ffffb90740cafc98 R08: 0000000000000000 R09:
0000000000000000
[  365.066960] R10: ffff8b4bb8e28528 R11: 0000000000000001 R12:
ffff8b4bb8e29628
[  365.066961] R13: 0000000000000001 R14: 0000000000000000 R15:
0000000000000001
[  365.066963] FS:  00007f301ea94540(0000) GS:ffff8b4bbc600000(0000)
knlGS:0000000000000000
[  365.066964] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  365.066964] CR2: 00007f3030025098 CR3: 0000000038294005 CR4:
00000000001606f0
[  365.066968] Call Trace:
[  365.066970]  ? _cond_resched+0x19/0x40
[  365.066972]  ? ext4_journal_check_start+0x12/0x80
[  365.066973]  ? __ext4_journal_start_sb+0x36/0x120
[  365.066975]  ext4_rename+0x6ae/0x860
[  365.066977]  ext4_rename2+0x8d/0xc0
[  365.066980]  vfs_rename+0x46e/0x960
[  365.066982]  SyS_rename+0x362/0x3c0
[  365.066985]  do_syscall_64+0x73/0x130
[  365.066986]  entry_SYSCALL_64_after_hwframe+0x3d/0xa2
[  365.066987] RIP: 0033:0x7f301e501d37
[  365.066988] RSP: 002b:00007ffd93f01868 EFLAGS: 00000202 ORIG_RAX:
0000000000000052
[  365.066989] RAX: ffffffffffffffda RBX: 0000000000000000 RCX:
00007f301e501d37
[  365.066989] RDX: 0000000000cb82f0 RSI: 0000000000cb82f0 RDI:
0000000000cb82d0
[  365.066990] RBP: 00007ffd93f019d0 R08: 0000000000000003 R09:
0000000000000000
[  365.066991] R10: 0000000000000003 R11: 0000000000000202 R12:
0000000000400c20
[  365.066991] R13: 00007ffd93f01ad0 R14: 0000000000000000 R15:
0000000000000000
[  365.066992] Code: 00 00 00 00 48 c7 45 90 00 00 00 00 48 c7 45 98 00 00 00
00 e9 76 ff ff ff 31 d2 e9 83 fe ff ff 89 85 7c ff ff ff e9 6e ff ff ff <0f> 0b
c7 85 70 ff ff ff 00 00 00 00 e9 f0 fd ff ff 48 8b 7d 80
[  365.067019] ---[ end trace 1ecf08f3cdf242f4 ]---
[  365.067025] WARNING: CPU: 0 PID: 1410 at
/build/linux-LL9XfP/linux-4.15.0/fs/ext4/ext4.h:2692
__ext4_read_dirblock+0x10a/0x260
[  365.067025] Modules linked in: vmw_balloon coretemp intel_rapl_perf
input_leds joydev serio_raw snd_ens1371 btusb snd_ac97_codec uvcvideo btrtl
videobuf2_vmalloc btbcm btintel gameport snd_rawmidi videobuf2_memops bluetooth
videobuf2_v4l2 videobuf2_core snd_seq_device ac97_bus snd_pcm videodev media
ecdh_generic snd_timer snd soundcore shpchp mac_hid vmw_vsock_vmci_transport
vsock vmw_vmci sch_fq_codel ib_iser rdma_cm iw_cm ib_cm ib_core iscsi_tcp
libiscsi_tcp libiscsi scsi_transport_iscsi ip_tables x_tables autofs4 btrfs
zstd_compress raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor
async_tx xor raid6_pq libcrc32c raid1 raid0 multipath linear hid_generic usbhid
hid crct10dif_pclmul crc32_pclmul ghash_clmulni_intel pcbc aesni_intel
aes_x86_64 crypto_simd glue_helper cryptd vmwgfx
[  365.067059]  psmouse ttm drm_kms_helper mptspi mptscsih ahci libahci e1000
mptbase scsi_transport_spi syscopyarea sysfillrect sysimgblt fb_sys_fops drm
i2c_piix4 pata_acpi
[  365.067065] CPU: 0 PID: 1410 Comm: poc Tainted: G        W       
4.15.0-12-generic #13-Ubuntu
[  365.067066] Hardware name: VMware, Inc. VMware Virtual Platform/440BX
Desktop Reference Platform, BIOS 6.00 07/02/2015
[  365.067067] RIP: 0010:__ext4_read_dirblock+0x10a/0x260
[  365.067068] RSP: 0018:ffffb90740cafbc0 EFLAGS: 00010246
[  365.067069] RAX: ffff8b4bb80e2400 RBX: ffff8b4bb8ddaa90 RCX:
ffff8b4bb91a6000
[  365.067069] RDX: ffff8b4bb91a7800 RSI: ffff8b4ba0d10800 RDI:
0000000000000000
[  365.067070] RBP: ffffb90740cafbf0 R08: 0000000000000000 R09:
0000000000000000
[  365.067070] R10: ffff8b4bb8e28528 R11: 0000000000000001 R12:
ffff8b4bb8e2e6e8
[  365.067071] R13: 0000000000000002 R14: 0000000000000000 R15:
000000000000081b
[  365.067072] FS:  00007f301ea94540(0000) GS:ffff8b4bbc600000(0000)
knlGS:0000000000000000
[  365.067073] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  365.067073] CR2: 00007f3030025098 CR3: 0000000038294005 CR4:
00000000001606f0
[  365.067076] Call Trace:
[  365.067078]  ext4_add_entry+0x18d/0x430
[  365.067079]  ext4_rename+0x6ae/0x860
[  365.067082]  ext4_rename2+0x8d/0xc0
[  365.067083]  vfs_rename+0x46e/0x960
[  365.067084]  SyS_rename+0x362/0x3c0
[  365.067086]  do_syscall_64+0x73/0x130
[  365.067088]  entry_SYSCALL_64_after_hwframe+0x3d/0xa2
[  365.067088] RIP: 0033:0x7f301e501d37
[  365.067089] RSP: 002b:00007ffd93f01868 EFLAGS: 00000202 ORIG_RAX:
0000000000000052
[  365.067090] RAX: ffffffffffffffda RBX: 0000000000000000 RCX:
00007f301e501d37
[  365.067090] RDX: 0000000000cb82f0 RSI: 0000000000cb82f0 RDI:
0000000000cb82d0
[  365.067091] RBP: 00007ffd93f019d0 R08: 0000000000000003 R09:
0000000000000000
[  365.067092] R10: 0000000000000003 R11: 0000000000000202 R12:
0000000000400c20
[  365.067092] R13: 00007ffd93f01ad0 R14: 0000000000000000 R15:
0000000000000000
[  365.067093] Code: a9 00 00 00 04 75 cf 85 ff 74 05 45 84 c0 75 66 85 ff 75
c2 4c 89 e7 e8 25 fe ff ff 85 c0 0f 84 b6 00 00 00 3e 80 4b 03 04 eb ab <0f> 0b
eb a7 41 83 fd 01 bf 01 00 00 00 41 0f 94 c0 eb af 48 8b
[  365.067110] ---[ end trace 1ecf08f3cdf242f5 ]---
[  365.067157] WARNING: CPU: 0 PID: 1410 at
/build/linux-LL9XfP/linux-4.15.0/fs/ext4/ext4.h:2692
add_dirent_to_buf+0x185/0x1a0
[  365.067157] Modules linked in: vmw_balloon coretemp intel_rapl_perf
input_leds joydev serio_raw snd_ens1371 btusb snd_ac97_codec uvcvideo btrtl
videobuf2_vmalloc btbcm btintel gameport snd_rawmidi videobuf2_memops bluetooth
videobuf2_v4l2 videobuf2_core snd_seq_device ac97_bus snd_pcm videodev media
ecdh_generic snd_timer snd soundcore shpchp mac_hid vmw_vsock_vmci_transport
vsock vmw_vmci sch_fq_codel ib_iser rdma_cm iw_cm ib_cm ib_core iscsi_tcp
libiscsi_tcp libiscsi scsi_transport_iscsi ip_tables x_tables autofs4 btrfs
zstd_compress raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor
async_tx xor raid6_pq libcrc32c raid1 raid0 multipath linear hid_generic usbhid
hid crct10dif_pclmul crc32_pclmul ghash_clmulni_intel pcbc aesni_intel
aes_x86_64 crypto_simd glue_helper cryptd vmwgfx
[  365.067178]  psmouse ttm drm_kms_helper mptspi mptscsih ahci libahci e1000
mptbase scsi_transport_spi syscopyarea sysfillrect sysimgblt fb_sys_fops drm
i2c_piix4 pata_acpi
[  365.067184] CPU: 0 PID: 1410 Comm: poc Tainted: G        W       
4.15.0-12-generic #13-Ubuntu
[  365.067186] Hardware name: VMware, Inc. VMware Virtual Platform/440BX
Desktop Reference Platform, BIOS 6.00 07/02/2015
[  365.067187] RIP: 0010:add_dirent_to_buf+0x185/0x1a0
[  365.067188] RSP: 0018:ffffb90740cafbb0 EFLAGS: 00010246
[  365.067189] RAX: ffff8b4bb91a7800 RBX: ffff8b4bb8e2e6e8 RCX:
ffff8b4bb8e29628
[  365.067189] RDX: ffff8b4bb80e2400 RSI: 000000000000000c RDI:
0000000000000001
[  365.067190] RBP: ffffb90740cafbf0 R08: 0000000000000000 R09:
ffff8b4bb8ddaa90
[  365.067190] R10: ffff8b4bb8e28528 R11: 0000000000000001 R12:
ffff8b4bb8ddaa90
[  365.067191] R13: 0000000000000001 R14: ffff8b4bb8e29628 R15:
ffffb90740cafc28
[  365.067191] FS:  00007f301ea94540(0000) GS:ffff8b4bbc600000(0000)
knlGS:0000000000000000
[  365.067192] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  365.067192] CR2: 00007f3030025098 CR3: 0000000038294005 CR4:
00000000001606f0
[  365.067195] Call Trace:
[  365.067197]  ext4_add_entry+0x126/0x430
[  365.067198]  ext4_rename+0x6ae/0x860
[  365.067200]  ext4_rename2+0x8d/0xc0
[  365.067201]  vfs_rename+0x46e/0x960
[  365.067203]  SyS_rename+0x362/0x3c0
[  365.067205]  do_syscall_64+0x73/0x130
[  365.067206]  entry_SYSCALL_64_after_hwframe+0x3d/0xa2
[  365.067207] RIP: 0033:0x7f301e501d37
[  365.067208] RSP: 002b:00007ffd93f01868 EFLAGS: 00000202 ORIG_RAX:
0000000000000052
[  365.067208] RAX: ffffffffffffffda RBX: 0000000000000000 RCX:
00007f301e501d37
[  365.067209] RDX: 0000000000cb82f0 RSI: 0000000000cb82f0 RDI:
0000000000cb82d0
[  365.067209] RBP: 00007ffd93f019d0 R08: 0000000000000003 R09:
0000000000000000
[  365.067210] R10: 0000000000000003 R11: 0000000000000202 R12:
0000000000400c20
[  365.067210] R13: 00007ffd93f01ad0 R14: 0000000000000000 R15:
0000000000000000
[  365.067211] Code: 45 c8 49 8b 4c 24 28 4c 89 e2 4d 89 f9 48 89 df 50 44 8b
45 c0 41 29 f0 4c 89 f6 e8 66 fc ff ff 85 c0 5a 0f 84 e9 fe ff ff eb c2 <0f> 0b
31 f6 e9 d3 fe ff ff 3e 80 a3 69 ff ff ff ef e9 36 ff ff
[  365.067227] ---[ end trace 1ecf08f3cdf242f6 ]---
[  365.067293] WARNING: CPU: 0 PID: 1410 at
/build/linux-LL9XfP/linux-4.15.0/fs/ext4/ext4.h:2692
ext4_handle_dirty_dirent_node+0xc5/0x110
[  365.067309] Modules linked in: vmw_balloon coretemp intel_rapl_perf
input_leds joydev serio_raw snd_ens1371 btusb snd_ac97_codec uvcvideo btrtl
videobuf2_vmalloc btbcm btintel gameport snd_rawmidi videobuf2_memops bluetooth
videobuf2_v4l2 videobuf2_core snd_seq_device ac97_bus snd_pcm videodev media
ecdh_generic snd_timer snd soundcore shpchp mac_hid vmw_vsock_vmci_transport
vsock vmw_vmci sch_fq_codel ib_iser rdma_cm iw_cm ib_cm ib_core iscsi_tcp
libiscsi_tcp libiscsi scsi_transport_iscsi ip_tables x_tables autofs4 btrfs
zstd_compress raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor
async_tx xor raid6_pq libcrc32c raid1 raid0 multipath linear hid_generic usbhid
hid crct10dif_pclmul crc32_pclmul ghash_clmulni_intel pcbc aesni_intel
aes_x86_64 crypto_simd glue_helper cryptd vmwgfx
[  365.067331]  psmouse ttm drm_kms_helper mptspi mptscsih ahci libahci e1000
mptbase scsi_transport_spi syscopyarea sysfillrect sysimgblt fb_sys_fops drm
i2c_piix4 pata_acpi
[  365.067337] CPU: 0 PID: 1410 Comm: poc Tainted: G        W       
4.15.0-12-generic #13-Ubuntu
[  365.067337] Hardware name: VMware, Inc. VMware Virtual Platform/440BX
Desktop Reference Platform, BIOS 6.00 07/02/2015
[  365.067339] RIP: 0010:ext4_handle_dirty_dirent_node+0xc5/0x110
[  365.067339] RSP: 0018:ffffb90740cafb60 EFLAGS: 00010246
[  365.067340] RAX: ffff8b4bb91a6000 RBX: ffff8b4bb8e2e6e8 RCX:
0000000000000000
[  365.067340] RDX: ffff8b4bb91a7800 RSI: ffff8b4bb8e2e6e8 RDI:
0000000000000001
[  365.067341] RBP: ffffb90740cafba0 R08: ffff8b4bb8dc6f70 R09:
0000000000000000
[  365.067341] R10: 0000000000000000 R11: 00000000000000a9 R12:
ffff8b4bb8ddaa90
[  365.067342] R13: 0000000000000001 R14: ffff8b4bb8e2e770 R15:
ffffb90740cafc28
[  365.067343] FS:  00007f301ea94540(0000) GS:ffff8b4bbc600000(0000)
knlGS:0000000000000000
[  365.067344] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  365.067346] CR2: 00007f3030025098 CR3: 0000000038294005 CR4:
00000000001606f0
[  365.067348] Call Trace:
[  365.067351]  add_dirent_to_buf+0x10b/0x1a0
[  365.067352]  ext4_add_entry+0x126/0x430
[  365.067354]  ext4_rename+0x6ae/0x860
[  365.067356]  ext4_rename2+0x8d/0xc0
[  365.067357]  vfs_rename+0x46e/0x960
[  365.067358]  SyS_rename+0x362/0x3c0
[  365.067360]  do_syscall_64+0x73/0x130
[  365.067362]  entry_SYSCALL_64_after_hwframe+0x3d/0xa2
[  365.067362] RIP: 0033:0x7f301e501d37
[  365.067363] RSP: 002b:00007ffd93f01868 EFLAGS: 00000202 ORIG_RAX:
0000000000000052
[  365.067364] RAX: ffffffffffffffda RBX: 0000000000000000 RCX:
00007f301e501d37
[  365.067364] RDX: 0000000000cb82f0 RSI: 0000000000cb82f0 RDI:
0000000000cb82d0
[  365.067365] RBP: 00007ffd93f019d0 R08: 0000000000000003 R09:
0000000000000000
[  365.067365] R10: 0000000000000003 R11: 0000000000000202 R12:
0000000000400c20
[  365.067366] R13: 00007ffd93f01ad0 R14: 0000000000000000 R15:
0000000000000000
[  365.067366] Code: 89 d9 4c 89 ea be 83 01 00 00 e8 27 ef fc ff 48 8b 7d d8
65 48 33 3c 25 28 00 00 00 75 44 48 83 c4 20 5b 41 5c 41 5d 41 5e 5d c3 <0f> 0b
eb c6 83 39 04 8b 83 48 03 00 00 75 24 48 8d 7d c0 48 89
[  365.067383] ---[ end trace 1ecf08f3cdf242f7 ]---
[  365.069051] WARNING: CPU: 0 PID: 1410 at
/build/linux-LL9XfP/linux-4.15.0/fs/ext4/ext4.h:2692
ext4_delete_entry+0xd8/0x140
[  365.069051] Modules linked in: vmw_balloon coretemp intel_rapl_perf
input_leds joydev serio_raw snd_ens1371 btusb snd_ac97_codec uvcvideo btrtl
videobuf2_vmalloc btbcm btintel gameport snd_rawmidi videobuf2_memops bluetooth
videobuf2_v4l2 videobuf2_core snd_seq_device ac97_bus snd_pcm videodev media
ecdh_generic snd_timer snd soundcore shpchp mac_hid vmw_vsock_vmci_transport
vsock vmw_vmci sch_fq_codel ib_iser rdma_cm iw_cm ib_cm ib_core iscsi_tcp
libiscsi_tcp libiscsi scsi_transport_iscsi ip_tables x_tables autofs4 btrfs
zstd_compress raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor
async_tx xor raid6_pq libcrc32c raid1 raid0 multipath linear hid_generic usbhid
hid crct10dif_pclmul crc32_pclmul ghash_clmulni_intel pcbc aesni_intel
aes_x86_64 crypto_simd glue_helper cryptd vmwgfx
[  365.069072]  psmouse ttm drm_kms_helper mptspi mptscsih ahci libahci e1000
mptbase scsi_transport_spi syscopyarea sysfillrect sysimgblt fb_sys_fops drm
i2c_piix4 pata_acpi
[  365.069078] CPU: 0 PID: 1410 Comm: poc Tainted: G        W       
4.15.0-12-generic #13-Ubuntu
[  365.069079] Hardware name: VMware, Inc. VMware Virtual Platform/440BX
Desktop Reference Platform, BIOS 6.00 07/02/2015
[  365.069080] RIP: 0010:ext4_delete_entry+0xd8/0x140
[  365.069081] RSP: 0000:ffffb90740cafc58 EFLAGS: 00010246
[  365.069082] RAX: ffff8b4bb91a7800 RBX: ffff8b4bb8e28528 RCX:
ffff8b4bb8dda750
[  365.069082] RDX: ffff8b4bb80e2400 RSI: ffff8b4bb8e28528 RDI:
0000000000000001
[  365.069083] RBP: ffffb90740cafc98 R08: ffff8b4ba0d10c18 R09:
ffff8b4bb8e28528
[  365.069083] R10: 0000000000000000 R11: 0000000000027ec0 R12:
ffff8b4bb8dda750
[  365.069084] R13: 0000000000000001 R14: ffff8b4ba0d10c18 R15:
000000000000000c
[  365.069085] FS:  00007f301ea94540(0000) GS:ffff8b4bbc600000(0000)
knlGS:0000000000000000
[  365.069085] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  365.069086] CR2: 00007f827d8132a0 CR3: 0000000038294005 CR4:
00000000001606f0
[  365.069089] Call Trace:
[  365.069091]  ext4_rename+0x824/0x860
[  365.069093]  ext4_rename2+0x8d/0xc0
[  365.069094]  vfs_rename+0x46e/0x960
[  365.069095]  SyS_rename+0x362/0x3c0
[  365.069097]  do_syscall_64+0x73/0x130
[  365.069099]  entry_SYSCALL_64_after_hwframe+0x3d/0xa2
[  365.069100] RIP: 0033:0x7f301e501d37
[  365.069100] RSP: 002b:00007ffd93f01868 EFLAGS: 00000202 ORIG_RAX:
0000000000000052
[  365.069101] RAX: ffffffffffffffda RBX: 0000000000000000 RCX:
00007f301e501d37
[  365.069102] RDX: 0000000000cb82f0 RSI: 0000000000cb82f0 RDI:
0000000000cb82d0
[  365.069102] RBP: 00007ffd93f019d0 R08: 0000000000000003 R09:
0000000000000000
[  365.069103] R10: 0000000000000003 R11: 0000000000000202 R12:
0000000000400c20
[  365.069104] R13: 00007ffd93f01ad0 R14: 0000000000000000 R15:
0000000000000000
[  365.069105] Code: d0 65 48 33 0c 25 28 00 00 00 75 79 48 8d 65 d8 5b 41 5c
41 5d 41 5e 41 5f 5d c3 48 83 b8 a8 03 00 00 00 41 bf 0c 00 00 00 75 8d <0f> 0b
45 31 ff eb 86 4c 8d 45 cc c7 45 cc 01 00 00 00 e8 51 06
[  365.069121] ---[ end trace 1ecf08f3cdf242f8 ]---
[  365.069154] WARNING: CPU: 0 PID: 1410 at
/build/linux-LL9XfP/linux-4.15.0/fs/ext4/ext4.h:2692
ext4_dirent_csum_verify+0x97/0xe0
[  365.069154] Modules linked in: vmw_balloon coretemp intel_rapl_perf
input_leds joydev serio_raw snd_ens1371 btusb snd_ac97_codec uvcvideo btrtl
videobuf2_vmalloc btbcm btintel gameport snd_rawmidi videobuf2_memops bluetooth
videobuf2_v4l2 videobuf2_core snd_seq_device ac97_bus snd_pcm videodev media
ecdh_generic snd_timer snd soundcore shpchp mac_hid vmw_vsock_vmci_transport
vsock vmw_vmci sch_fq_codel ib_iser rdma_cm iw_cm ib_cm ib_core iscsi_tcp
libiscsi_tcp libiscsi scsi_transport_iscsi ip_tables x_tables autofs4 btrfs
zstd_compress raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor
async_tx xor raid6_pq libcrc32c raid1 raid0 multipath linear hid_generic usbhid
hid crct10dif_pclmul crc32_pclmul ghash_clmulni_intel pcbc aesni_intel
aes_x86_64 crypto_simd glue_helper cryptd vmwgfx
[  365.069173]  psmouse ttm drm_kms_helper mptspi mptscsih ahci libahci e1000
mptbase scsi_transport_spi syscopyarea sysfillrect sysimgblt fb_sys_fops drm
i2c_piix4 pata_acpi
[  365.069178] CPU: 0 PID: 1410 Comm: poc Tainted: G        W       
4.15.0-12-generic #13-Ubuntu
[  365.069178] Hardware name: VMware, Inc. VMware Virtual Platform/440BX
Desktop Reference Platform, BIOS 6.00 07/02/2015
[  365.069179] RIP: 0010:ext4_dirent_csum_verify+0x97/0xe0
[  365.069180] RSP: 0018:ffffb90740cafcd8 EFLAGS: 00010246
[  365.069181] RAX: ffff8b4bb91a6000 RBX: 0000000000000001 RCX:
0000000000000000
[  365.069181] RDX: ffff8b4bb91a7800 RSI: ffff8b4ba0d12000 RDI:
ffff8b4bb8e28528
[  365.069182] RBP: ffffb90740cafd00 R08: ffffb90740cafd68 R09:
0000000000000000
[  365.069182] R10: ffffb90740cafea8 R11: 0000000000000001 R12:
0000000000000008
[  365.069182] R13: ffff8b4bb8e28528 R14: ffff8b4bb8dda0d0 R15:
0000000000000002
[  365.069183] FS:  00007f301ea94540(0000) GS:ffff8b4bbc600000(0000)
knlGS:0000000000000000
[  365.069184] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  365.069184] CR2: 00007f827d8132a0 CR3: 0000000038294005 CR4:
00000000001606f0
[  365.069186] Call Trace:
[  365.069188]  ext4_find_entry+0x29f/0x4e0
[  365.069190]  ext4_lookup+0x81/0x210
[  365.069193]  __lookup_hash+0x6a/0xa0
[  365.069194]  do_unlinkat+0x137/0x320
[  365.069195]  SyS_unlink+0x1f/0x30
[  365.069196]  do_syscall_64+0x73/0x130
[  365.069198]  entry_SYSCALL_64_after_hwframe+0x3d/0xa2
[  365.069199] RIP: 0033:0x7f301e597d47
[  365.069199] RSP: 002b:00007ffd93f01868 EFLAGS: 00000202 ORIG_RAX:
0000000000000057
[  365.069200] RAX: ffffffffffffffda RBX: 0000000000000000 RCX:
00007f301e597d47
[  365.069200] RDX: 0000000000000001 RSI: 0000000000000001 RDI:
0000000000cb82d0
[  365.069201] RBP: 00007ffd93f019d0 R08: 0000000000000003 R09:
0000000000000000
[  365.069201] R10: 0000000000000003 R11: 0000000000000202 R12:
0000000000400c20
[  365.069202] R13: 00007ffd93f01ad0 R14: 0000000000000000 R15:
0000000000000000
[  365.069202] Code: 48 c7 c6 a0 ed 04 a7 e8 98 d6 01 00 31 c0 eb 05 b8 01 00
00 00 48 8b 5d f0 65 48 33 1c 25 28 00 00 00 75 47 48 83 c4 20 5b 5d c3 <0f> 0b
b8 01 00 00 00 eb e1 83 39 04 8b 58 08 8b 87 48 03 00 00
[  365.069218] ---[ end trace 1ecf08f3cdf242f9 ]---
[  365.069238] WARNING: CPU: 0 PID: 1410 at
/build/linux-LL9XfP/linux-4.15.0/fs/ext4/ext4.h:2692
ext4_inode_bitmap_csum_set+0x9c/0xb0
[  365.069239] Modules linked in: vmw_balloon coretemp intel_rapl_perf
input_leds joydev serio_raw snd_ens1371 btusb snd_ac97_codec uvcvideo btrtl
videobuf2_vmalloc btbcm btintel gameport snd_rawmidi videobuf2_memops bluetooth
videobuf2_v4l2 videobuf2_core snd_seq_device ac97_bus snd_pcm videodev media
ecdh_generic snd_timer snd soundcore shpchp mac_hid vmw_vsock_vmci_transport
vsock vmw_vmci sch_fq_codel ib_iser rdma_cm iw_cm ib_cm ib_core iscsi_tcp
libiscsi_tcp libiscsi scsi_transport_iscsi ip_tables x_tables autofs4 btrfs
zstd_compress raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor
async_tx xor raid6_pq libcrc32c raid1 raid0 multipath linear hid_generic usbhid
hid crct10dif_pclmul crc32_pclmul ghash_clmulni_intel pcbc aesni_intel
aes_x86_64 crypto_simd glue_helper cryptd vmwgfx
[  365.069258]  psmouse ttm drm_kms_helper mptspi mptscsih ahci libahci e1000
mptbase scsi_transport_spi syscopyarea sysfillrect sysimgblt fb_sys_fops drm
i2c_piix4 pata_acpi
[  365.069263] CPU: 0 PID: 1410 Comm: poc Tainted: G        W       
4.15.0-12-generic #13-Ubuntu
[  365.069263] Hardware name: VMware, Inc. VMware Virtual Platform/440BX
Desktop Reference Platform, BIOS 6.00 07/02/2015
[  365.069264] RIP: 0010:ext4_inode_bitmap_csum_set+0x9c/0xb0
[  365.069265] RSP: 0018:ffffb90740cafd10 EFLAGS: 00010246
[  365.069265] RAX: 0000000000000000 RBX: ffff8b4bb91a7800 RCX:
ffff8b4bb8dc6af8
[  365.069266] RDX: ffff8b4bb80e28c0 RSI: 0000000000000006 RDI:
ffff8b4bb91a6000
[  365.069266] RBP: ffffb90740cafd40 R08: 0000000000000020 R09:
0000000000000000
[  365.069267] R10: 0000000000000000 R11: ffff8b4bb91a7800 R12:
ffff8b4bb8e2e6e8
[  365.069267] R13: 0000000000008000 R14: ffff8b4bb8e3bce0 R15:
ffff8b4bb80e28c0
[  365.069268] FS:  00007f301ea94540(0000) GS:ffff8b4bbc600000(0000)
knlGS:0000000000000000
[  365.069269] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  365.069269] CR2: 00007f827d8132a0 CR3: 0000000038294005 CR4:
00000000001606f0
[  365.069271] Call Trace:
[  365.069272]  ? __ext4_journal_get_write_access+0x25/0xb0
[  365.069274]  __ext4_new_inode+0xd1f/0x1400
[  365.069276]  ext4_create+0xa9/0x1b0
[  365.069277]  vfs_create+0x10a/0x1b0
[  365.069278]  SyS_mknod+0x1f1/0x210
[  365.069280]  do_syscall_64+0x73/0x130
[  365.069281]  entry_SYSCALL_64_after_hwframe+0x3d/0xa2
[  365.069282] RIP: 0033:0x7f301e59586d
[  365.069282] RSP: 002b:00007ffd93f01848 EFLAGS: 00000246 ORIG_RAX:
0000000000000085
[  365.069283] RAX: ffffffffffffffda RBX: 0000000000000000 RCX:
00007f301e59586d
[  365.069283] RDX: 0000000000000000 RSI: 00000000000001ff RDI:
0000000000cb82f0
[  365.069284] RBP: 00007ffd93f019d0 R08: 0000000000cb82f0 R09:
0000000000000000
[  365.069284] R10: 0000000000000003 R11: 0000000000000246 R12:
0000000000400c20
[  365.069285] R13: 00007ffd93f01ad0 R14: 0000000000000000 R15:
0000000000000000
[  365.069285] Code: 89 44 24 1a 48 83 3b 3b 76 09 c1 e8 10 66 41 89 44 24 3a
48 8b 45 e8 65 48 33 04 25 28 00 00 00 75 11 48 83 c4 20 5b 41 5c 5d c3 <0f> 0b
eb e4 0f 0b 0f 0b e8 a7 21 d8 ff 0f 1f 80 00 00 00 00 0f
[  365.069301] ---[ end trace 1ecf08f3cdf242fa ]---
[  365.069500] WARNING: CPU: 0 PID: 1410 at
/build/linux-LL9XfP/linux-4.15.0/fs/ext4/ext4.h:2692
ext4_has_metadata_csum+0x21/0x3b
[  365.069500] Modules linked in: vmw_balloon coretemp intel_rapl_perf
input_leds joydev serio_raw snd_ens1371 btusb snd_ac97_codec uvcvideo btrtl
videobuf2_vmalloc btbcm btintel gameport snd_rawmidi videobuf2_memops bluetooth
videobuf2_v4l2 videobuf2_core snd_seq_device ac97_bus snd_pcm videodev media
ecdh_generic snd_timer snd soundcore shpchp mac_hid vmw_vsock_vmci_transport
vsock vmw_vmci sch_fq_codel ib_iser rdma_cm iw_cm ib_cm ib_core iscsi_tcp
libiscsi_tcp libiscsi scsi_transport_iscsi ip_tables x_tables autofs4 btrfs
zstd_compress raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor
async_tx xor raid6_pq libcrc32c raid1 raid0 multipath linear hid_generic usbhid
hid crct10dif_pclmul crc32_pclmul ghash_clmulni_intel pcbc aesni_intel
aes_x86_64 crypto_simd glue_helper cryptd vmwgfx
[  365.069520]  psmouse ttm drm_kms_helper mptspi mptscsih ahci libahci e1000
mptbase scsi_transport_spi syscopyarea sysfillrect sysimgblt fb_sys_fops drm
i2c_piix4 pata_acpi
[  365.069526] CPU: 0 PID: 1410 Comm: poc Tainted: G        W       
4.15.0-12-generic #13-Ubuntu
[  365.069527] Hardware name: VMware, Inc. VMware Virtual Platform/440BX
Desktop Reference Platform, BIOS 6.00 07/02/2015
[  365.069528] RIP: 0010:ext4_has_metadata_csum+0x21/0x3b
[  365.069529] RSP: 0018:ffffb90740cafd40 EFLAGS: 00010246
[  365.069530] RAX: 0000000000000000 RBX: ffff8b4bb91a6000 RCX:
ffff8b4bb80e2400
[  365.069530] RDX: ffff8b4bb91a7800 RSI: 0000000010083248 RDI:
ffff8b4bb91a6000
[  365.069531] RBP: ffffb90740cafd40 R08: 00000000adaf9ab5 R09:
ffff8b4bb8e280f4
[  365.069531] R10: 0000000000000000 R11: ffff8b4bb91a7800 R12:
ffff8b4bb8e2e6e8
[  365.069531] R13: 0000000000008000 R14: ffff8b4bb8e280e8 R15:
ffff8b4bb80e28c0
[  365.069532] FS:  00007f301ea94540(0000) GS:ffff8b4bbc600000(0000)
knlGS:0000000000000000
[  365.069533] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  365.069533] CR2: 00007f827d8132a0 CR3: 0000000038294005 CR4:
00000000001606f0
[  365.069535] Call Trace:
[  365.069537]  __ext4_new_inode+0xf43/0x1400
[  365.069539]  ext4_create+0xa9/0x1b0
[  365.069540]  vfs_create+0x10a/0x1b0
[  365.069541]  SyS_mknod+0x1f1/0x210
[  365.069543]  do_syscall_64+0x73/0x130
[  365.069544]  entry_SYSCALL_64_after_hwframe+0x3d/0xa2
[  365.069545] RIP: 0033:0x7f301e59586d
[  365.069545] RSP: 002b:00007ffd93f01848 EFLAGS: 00000246 ORIG_RAX:
0000000000000085
[  365.069546] RAX: ffffffffffffffda RBX: 0000000000000000 RCX:
00007f301e59586d
[  365.069546] RDX: 0000000000000000 RSI: 00000000000001ff RDI:
0000000000cb82f0
[  365.069547] RBP: 00007ffd93f019d0 R08: 0000000000cb82f0 R09:
0000000000000000
[  365.069547] R10: 0000000000000003 R11: 0000000000000246 R12:
0000000000400c20
[  365.069548] R13: 00007ffd93f01ad0 R14: 0000000000000000 R15:
0000000000000000
[  365.069548] Code: ff 44 8b 45 b0 e9 91 fd ff ff 48 8b 97 08 04 00 00 48 8b
4a 68 f6 41 65 04 74 1d 48 8b 82 a8 03 00 00 48 85 c0 75 14 55 48 89 e5 <0f> 0b
48 85 c0 0f 95 c0 0f b6 c0 5d c3 31 c0 c3 48 85 c0 0f 95
[  365.069564] ---[ end trace 1ecf08f3cdf242fb ]---
[  365.069586] WARNING: CPU: 0 PID: 1410 at
/build/linux-LL9XfP/linux-4.15.0/fs/ext4/ext4.h:2692 ext4_iget+0x720/0xb90
[  365.069587] Modules linked in: vmw_balloon coretemp intel_rapl_perf
input_leds joydev serio_raw snd_ens1371 btusb snd_ac97_codec uvcvideo btrtl
videobuf2_vmalloc btbcm btintel gameport snd_rawmidi videobuf2_memops bluetooth
videobuf2_v4l2 videobuf2_core snd_seq_device ac97_bus snd_pcm videodev media
ecdh_generic snd_timer snd soundcore shpchp mac_hid vmw_vsock_vmci_transport
vsock vmw_vmci sch_fq_codel ib_iser rdma_cm iw_cm ib_cm ib_core iscsi_tcp
libiscsi_tcp libiscsi scsi_transport_iscsi ip_tables x_tables autofs4 btrfs
zstd_compress raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor
async_tx xor raid6_pq libcrc32c raid1 raid0 multipath linear hid_generic usbhid
hid crct10dif_pclmul crc32_pclmul ghash_clmulni_intel pcbc aesni_intel
aes_x86_64 crypto_simd glue_helper cryptd vmwgfx
[  365.069605]  psmouse ttm drm_kms_helper mptspi mptscsih ahci libahci e1000
mptbase scsi_transport_spi syscopyarea sysfillrect sysimgblt fb_sys_fops drm
i2c_piix4 pata_acpi
[  365.069609] CPU: 0 PID: 1410 Comm: poc Tainted: G        W       
4.15.0-12-generic #13-Ubuntu
[  365.069610] Hardware name: VMware, Inc. VMware Virtual Platform/440BX
Desktop Reference Platform, BIOS 6.00 07/02/2015
[  365.069611] RIP: 0010:ext4_iget+0x720/0xb90
[  365.069611] RSP: 0018:ffffb90740cafb70 EFLAGS: 00010246
[  365.069612] RAX: ffff8b4bb91a7800 RBX: ffff8b4bb8e2a728 RCX:
ffff8b4bb80e2400
[  365.069612] RDX: ffff8b4bb91a6000 RSI: 000000000000000d RDI:
fffff966008798c0
[  365.069613] RBP: ffffb90740cafbe8 R08: ffff8b4bb8ddac30 R09:
0000000000000000
[  365.069613] R10: ffff8b4ba1e63700 R11: 0000000000000005 R12:
ffff8b4bb91a6000
[  365.069614] R13: 000000000000000f R14: ffff8b4bb91a7800 R15:
0000000000000000
[  365.069615] FS:  00007f301ea94540(0000) GS:ffff8b4bbc600000(0000)
knlGS:0000000000000000
[  365.069615] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  365.069616] CR2: 00007f827d8132a0 CR3: 0000000038294005 CR4:
00000000001606f0
[  365.069618] Call Trace:
[  365.069620]  ext4_iget_normal+0x30/0x40
[  365.069621]  ext4_lookup+0xf0/0x210
[  365.069622]  lookup_slow+0xab/0x170
[  365.069623]  walk_component+0x1c3/0x350
[  365.069624]  path_lookupat+0x84/0x1f0
[  365.069625]  ? _cond_resched+0x19/0x40
[  365.069626]  filename_lookup+0xb6/0x190
[  365.069628]  ? d_instantiate+0x42/0x60
[  365.069630]  ? __check_object_size+0xaf/0x1b0
[  365.069633]  ? strncpy_from_user+0x4d/0x170
[  365.069635]  user_path_at_empty+0x36/0x40
[  365.069635]  ? user_path_at_empty+0x36/0x40
[  365.069638]  path_listxattr+0x4b/0xb0
[  365.069639]  SyS_listxattr+0x13/0x20
[  365.069640]  do_syscall_64+0x73/0x130
[  365.069642]  entry_SYSCALL_64_after_hwframe+0x3d/0xa2
[  365.069642] RIP: 0033:0x7f301e5a5907
[  365.069643] RSP: 002b:00007ffd93f01868 EFLAGS: 00000202 ORIG_RAX:
00000000000000c2
[  365.069643] RAX: ffffffffffffffda RBX: 0000000000000000 RCX:
00007f301e5a5907
[  365.069644] RDX: 0000000000000071 RSI: 00007ffd93f01950 RDI:
0000000000cb8310
[  365.069644] RBP: 00007ffd93f019d0 R08: 0000000000cb82f0 R09:
0000000000000000
[  365.069645] R10: 0000000000000003 R11: 0000000000000202 R12:
0000000000400c20
[  365.069645] R13: 00007ffd93f01ad0 R14: 0000000000000000 R15:
0000000000000000
[  365.069646] Code: 28 48 8b 86 08 04 00 00 f6 80 a0 00 00 00 04 0f 85 c1 fb
ff ff 49 83 fd 05 49 c7 c6 8c ff ff ff 0f 85 67 ff ff ff e9 a7 fb ff ff <0f> 0b
e9 9c fa ff ff 41 8b 42 6c 48 c1 e0 20 49 09 c1 4d 85 c9
[  365.069663] ---[ end trace 1ecf08f3cdf242fc ]---
[  365.070479] BUG: unable to handle kernel NULL pointer dereference at        
  (null)
[  365.070512] IP: ext4_xattr_set_entry+0x77f/0x1090
[  365.070533] PGD 8000000038072067 P4D 8000000038072067 PUD 38073067 PMD 0
[  365.070599] Oops: 0000 [#1] SMP PTI
[  365.070622] Modules linked in: vmw_balloon coretemp intel_rapl_perf
input_leds joydev serio_raw snd_ens1371 btusb snd_ac97_codec uvcvideo btrtl
videobuf2_vmalloc btbcm btintel gameport snd_rawmidi videobuf2_memops bluetooth
videobuf2_v4l2 videobuf2_core snd_seq_device ac97_bus snd_pcm videodev media
ecdh_generic snd_timer snd soundcore shpchp mac_hid vmw_vsock_vmci_transport
vsock vmw_vmci sch_fq_codel ib_iser rdma_cm iw_cm ib_cm ib_core iscsi_tcp
libiscsi_tcp libiscsi scsi_transport_iscsi ip_tables x_tables autofs4 btrfs
zstd_compress raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor
async_tx xor raid6_pq libcrc32c raid1 raid0 multipath linear hid_generic usbhid
hid crct10dif_pclmul crc32_pclmul ghash_clmulni_intel pcbc aesni_intel
aes_x86_64 crypto_simd glue_helper cryptd vmwgfx
[  365.070902]  psmouse ttm drm_kms_helper mptspi mptscsih ahci libahci e1000
mptbase scsi_transport_spi syscopyarea sysfillrect sysimgblt fb_sys_fops drm
i2c_piix4 pata_acpi
[  365.072144] CPU: 0 PID: 1410 Comm: poc Tainted: G        W       
4.15.0-12-generic #13-Ubuntu
[  365.072739] Hardware name: VMware, Inc. VMware Virtual Platform/440BX
Desktop Reference Platform, BIOS 6.00 07/02/2015
[  365.074959] RIP: 0010:ext4_xattr_set_entry+0x77f/0x1090
[  365.075822] RSP: 0018:ffffb90740caf948 EFLAGS: 00010246
[  365.076411] RAX: 0000000000000000 RBX: ffffb90740cafb40 RCX:
0000000000000000
[  365.076977] RDX: 0000000000000000 RSI: 0000000000000071 RDI:
ffff8b4bb8e2a7b0
[  365.077550] RBP: ffffb90740cafa40 R08: 0000000000000001 R09:
0000000000000000
[  365.078255] R10: 0000000000000000 R11: 0000000000000400 R12:
ffffb90740cafac0
[  365.078966] R13: ffff8b4bb85b5020 R14: ffff8b4bb85b5020 R15:
0000000000000071
[  365.079650] FS:  00007f301ea94540(0000) GS:ffff8b4bbc600000(0000)
knlGS:0000000000000000
[  365.080319] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  365.080976] CR2: 0000000000000000 CR3: 0000000038294005 CR4:
00000000001606f0
[  365.081633] Call Trace:
[  365.082290]  ? ext4_new_meta_blocks+0xcb/0x110
[  365.082867]  ? _cond_resched+0x19/0x40
[  365.083430]  ? __kmalloc+0x19b/0x220
[  365.083983]  ext4_xattr_block_set+0x578/0xf00
[  365.084564]  ? __ext4_journal_get_write_access+0x25/0xb0
[  365.085049]  ext4_xattr_set_handle+0x456/0x5a0
[  365.085518]  ? ext4_xattr_user_list+0x20/0x20
[  365.085974]  ext4_xattr_set+0xbd/0x140
[  365.086423]  ext4_xattr_user_set+0x34/0x40
[  365.086841]  __vfs_setxattr+0x6b/0x90
[  365.087252]  __vfs_setxattr_noperm+0x72/0x1a0
[  365.087675]  vfs_setxattr+0xa7/0xb0
[  365.088095]  setxattr+0x158/0x1c0
[  365.088497]  ? _cond_resched+0x19/0x40
[  365.088894]  ? __check_object_size+0xaf/0x1b0
[  365.089271]  ? strncpy_from_user+0x4d/0x170
[  365.089686]  ? _cond_resched+0x19/0x40
[  365.090030]  path_setxattr+0xbd/0xd0
[  365.090361]  SyS_setxattr+0x14/0x20
[  365.090683]  do_syscall_64+0x73/0x130
[  365.090992]  entry_SYSCALL_64_after_hwframe+0x3d/0xa2
[  365.091295] RIP: 0033:0x7f301e5a5a2a
[  365.091652] RSP: 002b:00007ffd93f01868 EFLAGS: 00000202 ORIG_RAX:
00000000000000bc
[  365.092028] RAX: ffffffffffffffda RBX: 0000000000000000 RCX:
00007f301e5a5a2a
[  365.092408] RDX: 00007ffd93f01950 RSI: 0000000000401498 RDI:
0000000000cb8310
[  365.092692] RBP: 00007ffd93f019d0 R08: 0000000000000001 R09:
0000000000000000
[  365.092967] R10: 0000000000000071 R11: 0000000000000202 R12:
0000000000400c20
[  365.093238] R13: 00007ffd93f01ad0 R14: 0000000000000000 R15:
0000000000000000
[  365.093506] Code: 8b 85 70 ff ff ff 48 89 b5 48 ff ff ff 89 b5 0c ff ff ff
48 8b 40 28 48 8b 80 08 04 00 00 8b 90 b0 03 00 00 48 8b 80 a8 03 00 00 <83> 38
04 0f 85 4f 06 00 00 89 55 c8 48 8b b5 40 ff ff ff 48 8d
[  365.094360] RIP: ext4_xattr_set_entry+0x77f/0x1090 RSP: ffffb90740caf948
[  365.094652] CR2: 0000000000000000
[  365.094983] ---[ end trace 1ecf08f3cdf242fd ]---

Reported by Wen Xu from SSLab, Gatech

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