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  1. [ 4.545926] BUG: unable to handle kernel NULL pointer dereference at (null)
  2. [ 4.547664] IP: bio_uncopy_user+0x3f/0x100
  3. [ 4.548313] PGD 0 P4D 0
  4. [ 4.548887] Oops: 0000 [#1] SMP
  5. [ 4.549447] Dumping ftrace buffer:
  6. [ 4.550031] (ftrace buffer empty)
  7. [ 4.550634] Modules linked in: sd_mod sg btrfs xor zstd_decompress zstd_compress xxhash raid6_pq crc32c_intel serio_raw bcache mptsas mptscsih mptbase usb_storage ahci scsi_transport_sas nvme lpc_ich libahci binfmt_misc virtio_scsi libata nvme_core shpchp dm_mod iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi null_blk configs
  8. [ 4.554475] CPU: 1 PID: 735 Comm: sg_inq Not tainted 4.15.0-rc1.blk_mq_dm_rq_perf_reverted+ #705
  9. [ 4.555762] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.9.3-1.fc25 04/01/2014
  10. [ 4.557051] task: 00000000e8cadd05 task.stack: 00000000893ae0fb
  11. [ 4.557959] RIP: 0010:bio_uncopy_user+0x3f/0x100
  12. [ 4.558696] RSP: 0018:ffffc90000ea7c68 EFLAGS: 00010246
  13. [ 4.559569] RAX: ffff88026fcf17c0 RBX: 0000000000000000 RCX: 0000000000002d9f
  14. [ 4.560573] RDX: 0000000000002d9e RSI: ffff88027fc5f100 RDI: ffff880278bc8900
  15. [ 4.561545] RBP: ffff880278bc8900 R08: ffff88027fc5ff30 R09: ffff88027ffd3000
  16. [ 4.562538] R10: 0000000000000002 R11: 0000000000000024 R12: ffff880278bc8900
  17. [ 4.563597] R13: 0000000000000000 R14: 0000000000000000 R15: ffff880278bc8200
  18. [ 4.564579] FS: 00007f2657ac3700(0000) GS:ffff88027fc40000(0000) knlGS:0000000000000000
  19. [ 4.565889] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
  20. [ 4.566766] CR2: 0000000000000000 CR3: 000000026b66f006 CR4: 00000000003606e0
  21. [ 4.567735] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
  22. [ 4.573897] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
  23. [ 4.574905] Call Trace:
  24. [ 4.575460] blk_rq_unmap_user+0x1b/0x60
  25. [ 4.576219] sg_io+0x236/0x3b0
  26. [ 4.576870] scsi_cmd_ioctl+0x299/0x400
  27. [ 4.577793] ? mem_cgroup_try_charge+0x86/0x1a0
  28. [ 4.578897] sd_ioctl+0x80/0x100 [sd_mod]
  29. [ 4.579844] blkdev_ioctl+0x4b5/0x950
  30. [ 4.580751] block_ioctl+0x39/0x40
  31. [ 4.581600] do_vfs_ioctl+0x9f/0x5f0
  32. [ 4.582355] ? SYSC_newfstat+0x3c/0x60
  33. [ 4.583264] SyS_ioctl+0x74/0x80
  34. [ 4.584142] entry_SYSCALL_64_fastpath+0x1a/0x7d
  35. [ 4.584973] RIP: 0033:0x7f26573b8687
  36. [ 4.585673] RSP: 002b:00007ffe5d714388 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
  37. [ 4.586951] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f26573b8687
  38. [ 4.587883] RDX: 00007ffe5d714390 RSI: 0000000000002285 RDI: 0000000000000003
  39. [ 4.588855] RBP: 00007ffe5d714600 R08: 0000559b17799010 R09: 00007ffe5d714390
  40. [ 4.589855] R10: 0000000000000003 R11: 0000000000000246 R12: 0000000000000003
  41. [ 4.590944] R13: 00007ffe5d7149c0 R14: 0000000000000000 R15: 0000000000000000
  42. [ 4.591990] Code: 47 18 20 4c 8b 6f 50 75 5e 65 48 8b 04 25 c0 d2 00 00 48 83 b8 30 08 00 00 00 41 be fc ff ff ff 74 09 f6 47 14 01 74 5b 45 31 f6 <41> 8b 45 00 85 c0 74 34 66 41 83 bc 24 80 00 00 00 00 49 8b 9c
  43. [ 4.594729] RIP: bio_uncopy_user+0x3f/0x100 RSP: ffffc90000ea7c68
  44. [ 4.595649] CR2: 0000000000000000
  45. [ 4.596312] ---[ end trace 32fcdf8cfaf45945 ]---
  46. [ 4.596393] BUG: unable to handle kernel NULL pointer dereference at (null)
  47. [ 4.596398] IP: bio_uncopy_user+0x3f/0x100
  48. [ 4.596400] PGD 0 P4D 0
  49. [ 4.596402] Oops: 0000 [#2] SMP
  50. [ 4.596406] Dumping ftrace buffer:
  51. [ 4.596408] (ftrace buffer empty)
  52. [ 4.596409] Modules linked in: sd_mod sg btrfs xor zstd_decompress zstd_compress xxhash raid6_pq crc32c_intel serio_raw bcache mptsas mptscsih mptbase usb_storage ahci scsi_transport_sas nvme lpc_ich libahci binfmt_misc virtio_scsi libata nvme_core shpchp dm_mod iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi null_blk configs
  53. [ 4.596424] CPU: 0 PID: 737 Comm: sg_inq Tainted: G D 4.15.0-rc1.blk_mq_dm_rq_perf_reverted+ #705
  54. [ 4.596425] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.9.3-1.fc25 04/01/2014
  55. [ 4.596425] task: 000000005367cd4b task.stack: 00000000ff60b7fa
  56. [ 4.596427] RIP: 0010:bio_uncopy_user+0x3f/0x100
  57. [ 4.596427] RSP: 0018:ffffc90000ec7c68 EFLAGS: 00010246
  58. [ 4.596428] RAX: ffff88026fcf0000 RBX: 0000000000000000 RCX: 0000000000001e13
  59. [ 4.596428] RDX: 0000000000001e12 RSI: ffff88027fc1f100 RDI: ffff880276582300
  60. [ 4.596429] RBP: ffff880276582300 R08: 000077ff80000000 R09: 0000000000000014
  61. [ 4.596429] R10: 0000000000000001 R11: 0000000000000014 R12: ffff880276582300
  62. [ 4.596429] R13: 0000000000000000 R14: 0000000000000000 R15: ffff880276583f00
  63. [ 4.596430] FS: 00007f6a60e44700(0000) GS:ffff88027fc00000(0000) knlGS:0000000000000000
  64. [ 4.596431] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
  65. [ 4.596431] CR2: 0000000000000000 CR3: 0000000279357002 CR4: 00000000003606f0
  66. [ 4.596433] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
  67. [ 4.596434] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
  68. [ 4.596434] Call Trace:
  69. [ 4.596438] blk_rq_unmap_user+0x1b/0x60
  70. [ 4.596439] sg_io+0x236/0x3b0
  71. [ 4.596441] scsi_cmd_ioctl+0x299/0x400
  72. [ 4.596443] ? mem_cgroup_try_charge+0x86/0x1a0
  73. [ 4.596449] sd_ioctl+0x80/0x100 [sd_mod]
  74. [ 4.596451] blkdev_ioctl+0x4b5/0x950
  75. [ 4.596454] block_ioctl+0x39/0x40
  76. [ 4.596455] do_vfs_ioctl+0x9f/0x5f0
  77. [ 4.596457] ? SYSC_newfstat+0x3c/0x60
  78. [ 4.596458] SyS_ioctl+0x74/0x80
  79. [ 4.596460] entry_SYSCALL_64_fastpath+0x1a/0x7d
  80. [ 4.596462] RIP: 0033:0x7f6a60739687
  81. [ 4.596463] RSP: 002b:00007ffccfc66b68 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
  82. [ 4.596463] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f6a60739687
  83. [ 4.596464] RDX: 00007ffccfc66b70 RSI: 0000000000002285 RDI: 0000000000000003
  84. [ 4.596464] RBP: 00007ffccfc66de0 R08: 00005574691fc010 R09: 00007ffccfc66b70
  85. [ 4.596465] R10: 0000000000000003 R11: 0000000000000246 R12: 0000000000000003
  86. [ 4.596465] R13: 00007ffccfc671a0 R14: 0000000000000000 R15: 0000000000000000
  87. [ 4.596466] Code: 47 18 20 4c 8b 6f 50 75 5e 65 48 8b 04 25 c0 d2 00 00 48 83 b8 30 08 00 00 00 41 be fc ff ff ff 74 09 f6 47 14 01 74 5b 45 31 f6 <41> 8b 45 00 85 c0 74 34 66 41 83 bc 24 80 00 00 00 00 49 8b 9c
  88. [ 4.596479] RIP: bio_uncopy_user+0x3f/0x100 RSP: ffffc90000ec7c68
  89. [ 4.596480] CR2: 0000000000000000
  90. [ 4.596487] ---[ end trace 32fcdf8cfaf45946 ]---
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