general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] PREEMPT SMP KASAN KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007] CPU: 0 PID: 4739 Comm: syz-executor.1 Not tainted 5.15.0-syzkaller #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.14.0-2 04/01/2014 RIP: 0010:scsi_command_size include/scsi/scsi_common.h:24 [inline] RIP: 0010:scsi_setup_scsi_cmnd drivers/scsi/scsi_lib.c:1188 [inline] RIP: 0010:scsi_prepare_cmd drivers/scsi/scsi_lib.c:1574 [inline] RIP: 0010:scsi_queue_rq+0x2681/0x3470 drivers/scsi/scsi_lib.c:1680 Code: 00 fc ff df 48 c1 ea 03 80 3c 02 00 0f 85 61 0d 00 00 4c 8b b3 58 02 00 00 48 b8 00 00 00 00 00 fc ff df 4c 89 f2 48 c1 ea 03 <0f> b6 04 02 4c 89 f2 83 e2 07 38 d0 7f 08 84 c0 0f 85 39 0c 00 00 RSP: 0018:ffffc900069bf510 EFLAGS: 00010246 RAX: dffffc0000000000 RBX: ffff88801b066180 RCX: ffffc9000c403000 RDX: 0000000000000000 RSI: ffffffff8486002e RDI: 0000000000000003 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: ffffffff84860019 R11: 0000000000000000 R12: ffff88801b0663d8 R13: 0000000000000000 R14: 0000000000000000 R15: ffff8880139ae000 FS: 0000000000000000(0000) GS:ffff88802ca00000(0063) knlGS:00000000f4546b40 CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 CR2: 000000005693ef1c CR3: 000000004b15e000 CR4: 0000000000150ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: blk_mq_dispatch_rq_list+0x6fd/0x2340 block/blk-mq.c:1639 __blk_mq_sched_dispatch_requests+0x20b/0x410 block/blk-mq-sched.c:325 blk_mq_sched_dispatch_requests+0xfb/0x180 block/blk-mq-sched.c:358 __blk_mq_run_hw_queue+0xd8/0x150 block/blk-mq.c:1761 __blk_mq_delay_run_hw_queue+0x547/0x640 block/blk-mq.c:1838 blk_mq_run_hw_queue+0x16c/0x2f0 block/blk-mq.c:1891 blk_mq_sched_insert_request+0x368/0x450 block/blk-mq-sched.c:474 blk_execute_rq+0xd2/0x350 block/blk-exec.c:102 sg_io+0x666/0x10c0 drivers/scsi/scsi_ioctl.c:484 scsi_ioctl_sg_io drivers/scsi/scsi_ioctl.c:872 [inline] scsi_ioctl+0xa77/0x1570 drivers/scsi/scsi_ioctl.c:928 sr_block_ioctl+0x1ce/0x210 drivers/scsi/sr.c:587 blkdev_compat_ptr_ioctl+0x9e/0xe0 block/ioctl.c:235 compat_blkdev_ioctl+0x3b8/0x810 block/ioctl.c:662 __do_compat_sys_ioctl+0x1c7/0x290 fs/ioctl.c:972 do_syscall_32_irqs_on arch/x86/entry/common.c:112 [inline] __do_fast_syscall_32+0x65/0xf0 arch/x86/entry/common.c:178 do_fast_syscall_32+0x2f/0x70 arch/x86/entry/common.c:203 entry_SYSENTER_compat_after_hwframe+0x4d/0x5c RIP: 0023:0xf6f4c549 Code: 03 74 c0 01 10 05 03 74 b8 01 10 06 03 74 b4 01 10 07 03 74 b0 01 10 08 03 74 d8 01 00 00 00 00 00 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 8d b4 26 00 00 00 00 8d b4 26 00 00 00 00 RSP: 002b:00000000f45465fc EFLAGS: 00000296 ORIG_RAX: 0000000000000036 RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 0000000000002285 RDX: 0000000020000380 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 Modules linked in: ---[ end trace 75e9f50ef1028e53 ]--- RIP: 0010:scsi_command_size include/scsi/scsi_common.h:24 [inline] RIP: 0010:scsi_setup_scsi_cmnd drivers/scsi/scsi_lib.c:1188 [inline] RIP: 0010:scsi_prepare_cmd drivers/scsi/scsi_lib.c:1574 [inline] RIP: 0010:scsi_queue_rq+0x2681/0x3470 drivers/scsi/scsi_lib.c:1680 Code: 00 fc ff df 48 c1 ea 03 80 3c 02 00 0f 85 61 0d 00 00 4c 8b b3 58 02 00 00 48 b8 00 00 00 00 00 fc ff df 4c 89 f2 48 c1 ea 03 <0f> b6 04 02 4c 89 f2 83 e2 07 38 d0 7f 08 84 c0 0f 85 39 0c 00 00 RSP: 0018:ffffc900069bf510 EFLAGS: 00010246 RAX: dffffc0000000000 RBX: ffff88801b066180 RCX: ffffc9000c403000 RDX: 0000000000000000 RSI: ffffffff8486002e RDI: 0000000000000003 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: ffffffff84860019 R11: 0000000000000000 R12: ffff88801b0663d8 R13: 0000000000000000 R14: 0000000000000000 R15: ffff8880139ae000 FS: 0000000000000000(0000) GS:ffff88802ca00000(0063) knlGS:00000000f4546b40 CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 CR2: 000000005693ef1c CR3: 000000004b15e000 CR4: 0000000000150ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess), 4 bytes skipped: 0: 48 c1 ea 03 shr $0x3,%rdx 4: 80 3c 02 00 cmpb $0x0,(%rdx,%rax,1) 8: 0f 85 61 0d 00 00 jne 0xd6f e: 4c 8b b3 58 02 00 00 mov 0x258(%rbx),%r14 15: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 1c: fc ff df 1f: 4c 89 f2 mov %r14,%rdx 22: 48 c1 ea 03 shr $0x3,%rdx * 26: 0f b6 04 02 movzbl (%rdx,%rax,1),%eax <-- trapping instruction 2a: 4c 89 f2 mov %r14,%rdx 2d: 83 e2 07 and $0x7,%edx 30: 38 d0 cmp %dl,%al 32: 7f 08 jg 0x3c 34: 84 c0 test %al,%al 36: 0f 85 39 0c 00 00 jne 0xc75