general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] PREEMPT SMP KASAN KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007] CPU: 1 PID: 6992 Comm: syz-executor.4 Not tainted 5.10.76-syzkaller-01178-g4944ec82ebb9 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:scsi_command_size syzkaller/managers/android-5-10/kernel/./include/scsi/scsi_common.h:24 [inline] RIP: 0010:scsi_setup_scsi_cmnd syzkaller/managers/android-5-10/kernel/drivers/scsi/scsi_lib.c:1197 [inline] RIP: 0010:scsi_prepare_cmd syzkaller/managers/android-5-10/kernel/drivers/scsi/scsi_lib.c:1581 [inline] RIP: 0010:scsi_queue_rq+0x14d0/0x23c0 syzkaller/managers/android-5-10/kernel/drivers/scsi/scsi_lib.c:1670 Code: 00 00 00 00 00 fc ff df 80 3c 08 00 74 08 48 89 df e8 c4 bd c3 fe 4c 8b 3b 4c 89 f8 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df <8a> 04 08 84 c0 0f 85 fe 0d 00 00 41 0f b6 1f bf 7f 00 00 00 89 de RSP: 0018:ffffc90000e67210 EFLAGS: 00010246 RAX: 0000000000000000 RBX: ffff88810a934ec0 RCX: dffffc0000000000 RDX: ffff88815ed393c0 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffffc90000e672d0 R08: ffffffff82e30c78 R09: ffff88810a934ec8 R10: ffffed10215269dc R11: 0000000000000000 R12: 1ffff110215269d6 R13: ffff888109ef4000 R14: ffff88810a934eb4 R15: 0000000000000000 FS: 00007f0afcf4c700(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f0afcf2b718 CR3: 0000000146fc2000 CR4: 00000000003506a0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: blk_mq_dispatch_rq_list+0x9a4/0x1800 syzkaller/managers/android-5-10/kernel/block/blk-mq.c:1373 __blk_mq_sched_dispatch_requests+0x3c6/0x4d0 syzkaller/managers/android-5-10/kernel/block/blk-mq-sched.c:308 blk_mq_sched_dispatch_requests+0xf0/0x160 syzkaller/managers/android-5-10/kernel/block/blk-mq-sched.c:341 __blk_mq_run_hw_queue+0x14f/0x260 syzkaller/managers/android-5-10/kernel/block/blk-mq.c:1517 __blk_mq_delay_run_hw_queue+0x230/0x570 syzkaller/managers/android-5-10/kernel/block/blk-mq.c:1594 blk_mq_run_hw_queue+0x29d/0x3b0 syzkaller/managers/android-5-10/kernel/block/blk-mq.c:1647 blk_mq_sched_insert_request+0x3d7/0x520 syzkaller/managers/android-5-10/kernel/block/blk-mq-sched.c:469 blk_execute_rq_nowait syzkaller/managers/android-5-10/kernel/block/blk-exec.c:64 [inline] blk_execute_rq+0x208/0x2f0 syzkaller/managers/android-5-10/kernel/block/blk-exec.c:86 sg_io+0x868/0xf90 syzkaller/managers/android-5-10/kernel/block/scsi_ioctl.c:360 scsi_cmd_ioctl+0x7de/0x1990 syzkaller/managers/android-5-10/kernel/block/scsi_ioctl.c:809 scsi_cmd_blk_ioctl+0x117/0x150 syzkaller/managers/android-5-10/kernel/block/scsi_ioctl.c:867 sd_ioctl_common syzkaller/managers/android-5-10/kernel/drivers/scsi/sd.c:1591 [inline] sd_ioctl+0x156/0x210 syzkaller/managers/android-5-10/kernel/drivers/scsi/sd.c:1781 __blkdev_driver_ioctl syzkaller/managers/android-5-10/kernel/block/ioctl.c:237 [inline] blkdev_ioctl+0x2c3/0x5f0 syzkaller/managers/android-5-10/kernel/block/ioctl.c:632 block_ioctl+0xaf/0xf0 syzkaller/managers/android-5-10/kernel/fs/block_dev.c:1886 vfs_ioctl syzkaller/managers/android-5-10/kernel/fs/ioctl.c:48 [inline] __do_sys_ioctl syzkaller/managers/android-5-10/kernel/fs/ioctl.c:753 [inline] __se_sys_ioctl+0x115/0x190 syzkaller/managers/android-5-10/kernel/fs/ioctl.c:739 __x64_sys_ioctl+0x7b/0x90 syzkaller/managers/android-5-10/kernel/fs/ioctl.c:739 do_syscall_64+0x31/0x70 syzkaller/managers/android-5-10/kernel/arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x7f0aff1d5a39 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 bc ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f0afcf4c188 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f0aff2e8f60 RCX: 00007f0aff1d5a39 RDX: 0000000020002100 RSI: 0000000000002285 RDI: 0000000000000004 RBP: 00007f0aff22fe8f R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffd81092c2f R14: 00007f0afcf4c300 R15: 0000000000022000 Modules linked in: ---[ end trace 3229d1a1dd6154b8 ]--- RIP: 0010:scsi_command_size syzkaller/managers/android-5-10/kernel/./include/scsi/scsi_common.h:24 [inline] RIP: 0010:scsi_setup_scsi_cmnd syzkaller/managers/android-5-10/kernel/drivers/scsi/scsi_lib.c:1197 [inline] RIP: 0010:scsi_prepare_cmd syzkaller/managers/android-5-10/kernel/drivers/scsi/scsi_lib.c:1581 [inline] RIP: 0010:scsi_queue_rq+0x14d0/0x23c0 syzkaller/managers/android-5-10/kernel/drivers/scsi/scsi_lib.c:1670 Code: 00 00 00 00 00 fc ff df 80 3c 08 00 74 08 48 89 df e8 c4 bd c3 fe 4c 8b 3b 4c 89 f8 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df <8a> 04 08 84 c0 0f 85 fe 0d 00 00 41 0f b6 1f bf 7f 00 00 00 89 de RSP: 0018:ffffc90000e67210 EFLAGS: 00010246 RAX: 0000000000000000 RBX: ffff88810a934ec0 RCX: dffffc0000000000 RDX: ffff88815ed393c0 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffffc90000e672d0 R08: ffffffff82e30c78 R09: ffff88810a934ec8 R10: ffffed10215269dc R11: 0000000000000000 R12: 1ffff110215269d6 R13: ffff888109ef4000 R14: ffff88810a934eb4 R15: 0000000000000000 FS: 00007f0afcf4c700(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f0afcf2b718 CR3: 0000000146fc2000 CR4: 00000000003506a0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 00 00 add %al,(%rax) 2: 00 00 add %al,(%rax) 4: 00 fc add %bh,%ah 6: ff (bad) 7: df 80 3c 08 00 74 filds 0x7400083c(%rax) d: 08 48 89 or %cl,-0x77(%rax) 10: df e8 fucomip %st(0),%st 12: c4 (bad) 13: bd c3 fe 4c 8b mov $0x8b4cfec3,%ebp 18: 3b 4c 89 f8 cmp -0x8(%rcx,%rcx,4),%ecx 1c: 48 c1 e8 03 shr $0x3,%rax 20: 48 b9 00 00 00 00 00 movabs $0xdffffc0000000000,%rcx 27: fc ff df * 2a: 8a 04 08 mov (%rax,%rcx,1),%al <-- trapping instruction 2d: 84 c0 test %al,%al 2f: 0f 85 fe 0d 00 00 jne 0xe33 35: 41 0f b6 1f movzbl (%r15),%ebx 39: bf 7f 00 00 00 mov $0x7f,%edi 3e: 89 de mov %ebx,%esi