BUG: kernel NULL pointer dereference, address: 0000000000000008
#PF: supervisor read access in kernel mode
#PF: error_code(0x0000) - not-present page
PGD 103f6d067 P4D 103f6d067 PUD 103f6f067 PMD 0 
Oops: 0000 [#1] PREEMPT SMP
CPU: 1 PID: 1861 Comm: syz-executor.0 Not tainted 6.7.0-rc3-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/10/2023
RIP: 0010:_compound_head include/linux/page-flags.h:247 [inline]
RIP: 0010:bio_first_folio include/linux/bio.h:289 [inline]
RIP: 0010:__bio_release_pages+0x33/0x2c0 block/bio.c:1150
Code: 06 00 00 00 41 56 41 55 41 54 55 48 89 fd 53 48 83 ec 40 48 8d 54 24 10 40 88 74 24 0f 48 89 d7 48 8b 55 68 f3 48 ab 48 8b 02 <48> 8b 48 08 f6 c1 01 0f 85 14 01 00 00 0f 1f 44 00 00 48 89 04 24
RSP: 0018:ffffc900012279f8 EFLAGS: 00010282
RAX: 0000000000000000 RBX: ffff8881096f3f00 RCX: 0000000000000000
RDX: ffff8881096f3f78 RSI: 0000000000000000 RDI: ffffc90001227a38
RBP: ffff8881096f3f00 R08: 0000000000000008 R09: 000000001fffefff
R10: 0000000000007ffc R11: 0000000000000000 R12: fffffffffffffff2
R13: ffff8881042fe000 R14: ffff8881042fe000 R15: 0000000000000000
FS:  00007fb4230226c0(0000) GS:ffff888237d00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000008 CR3: 0000000104337000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 bio_release_pages include/linux/bio.h:508 [inline]
 bio_map_user_iov+0x339/0x3a0 block/blk-map.c:347
 blk_rq_map_user_iov+0xd7/0x7b0 block/blk-map.c:663
 blk_rq_map_user block/blk-map.c:690 [inline]
 blk_rq_map_user_io+0xf6/0x100 block/blk-map.c:723
 sg_io+0x16b/0x320 drivers/scsi/scsi_ioctl.c:456
 scsi_cdrom_send_packet+0x1bc/0x310 drivers/scsi/scsi_ioctl.c:820
 scsi_ioctl+0x96/0x950 drivers/scsi/scsi_ioctl.c:903
 sg_ioctl+0x2f4/0xaf0 drivers/scsi/sg.c:1163
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:871 [inline]
 __se_sys_ioctl fs/ioctl.c:857 [inline]
 __x64_sys_ioctl+0x8b/0xc0 fs/ioctl.c:857
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x40/0xe0 arch/x86/entry/common.c:82
 entry_SYSCALL_64_after_hwframe+0x63/0x6b
RIP: 0033:0x7fb42349fba9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fb4230220c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007fb4235bef80 RCX: 00007fb42349fba9
RDX: 0000000020000000 RSI: 0000000000005393 RDI: 0000000000000004
RBP: 00007fb4234eb47a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000006 R14: 00007fb4235bef80 R15: 00007ffe87d3fb88
 </TASK>
Modules linked in:
CR2: 0000000000000008
---[ end trace 0000000000000000 ]---
RIP: 0010:_compound_head include/linux/page-flags.h:247 [inline]
RIP: 0010:bio_first_folio include/linux/bio.h:289 [inline]
RIP: 0010:__bio_release_pages+0x33/0x2c0 block/bio.c:1150
Code: 06 00 00 00 41 56 41 55 41 54 55 48 89 fd 53 48 83 ec 40 48 8d 54 24 10 40 88 74 24 0f 48 89 d7 48 8b 55 68 f3 48 ab 48 8b 02 <48> 8b 48 08 f6 c1 01 0f 85 14 01 00 00 0f 1f 44 00 00 48 89 04 24
RSP: 0018:ffffc900012279f8 EFLAGS: 00010282
RAX: 0000000000000000 RBX: ffff8881096f3f00 RCX: 0000000000000000
RDX: ffff8881096f3f78 RSI: 0000000000000000 RDI: ffffc90001227a38
RBP: ffff8881096f3f00 R08: 0000000000000008 R09: 000000001fffefff
R10: 0000000000007ffc R11: 0000000000000000 R12: fffffffffffffff2
R13: ffff8881042fe000 R14: ffff8881042fe000 R15: 0000000000000000
FS:  00007fb4230226c0(0000) GS:ffff888237d00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000008 CR3: 0000000104337000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess), 1 bytes skipped:
   0:	00 00                	add    %al,(%rax)
   2:	00 41 56             	add    %al,0x56(%rcx)
   5:	41 55                	push   %r13
   7:	41 54                	push   %r12
   9:	55                   	push   %rbp
   a:	48 89 fd             	mov    %rdi,%rbp
   d:	53                   	push   %rbx
   e:	48 83 ec 40          	sub    $0x40,%rsp
  12:	48 8d 54 24 10       	lea    0x10(%rsp),%rdx
  17:	40 88 74 24 0f       	mov    %sil,0xf(%rsp)
  1c:	48 89 d7             	mov    %rdx,%rdi
  1f:	48 8b 55 68          	mov    0x68(%rbp),%rdx
  23:	f3 48 ab             	rep stos %rax,%es:(%rdi)
  26:	48 8b 02             	mov    (%rdx),%rax
* 29:	48 8b 48 08          	mov    0x8(%rax),%rcx <-- trapping instruction
  2d:	f6 c1 01             	test   $0x1,%cl
  30:	0f 85 14 01 00 00    	jne    0x14a
  36:	0f 1f 44 00 00       	nopl   0x0(%rax,%rax,1)
  3b:	48 89 04 24          	mov    %rax,(%rsp)