sg_write: data in/out 22/102 bytes for SCSI command 0x0-- guessing data in; program syz-executor.1 not setting count and/or reply_len properly ------------[ cut here ]------------ WARNING: CPU: 0 PID: 27518 at lib/iov_iter.c:623 _copy_from_iter+0x36c/0x1030 Modules linked in: CPU: 0 PID: 27518 Comm: syz-executor.1 Not tainted 6.2.0-syzkaller-10217-ga93e884edf61 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/16/2023 RIP: 0010:_copy_from_iter+0x36c/0x1030 lib/iov_iter.c:623 Code: 25 28 00 00 00 48 3b 84 24 00 01 00 00 0f 85 9c 0c 00 00 4c 89 e8 48 8d 65 d8 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 64 03 51 fd <0f> 0b 45 31 ed eb a8 e8 58 03 51 fd 49 89 dd e9 ca fd ff ff e8 4b RSP: 0018:ffffc900036af280 EFLAGS: 00010287 RAX: ffffffff843baa6c RBX: 0000000000000000 RCX: 0000000000040000 RDX: ffffc90003a21000 RSI: 0000000000004ea5 RDI: 0000000000004ea6 RBP: ffffc900036af3d8 R08: ffffffff843ba7b7 R09: 0000000000000200 R10: 0000000000000000 R11: dffffc0000000001 R12: ffffea00007a0600 R13: 0000000000000066 R14: 1ffff920006d5e60 R15: dffffc0000000000 FS: 00007f979f9a9700(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fe43e70e262 CR3: 0000000028fdd000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: copy_page_from_iter+0x7a/0x100 lib/iov_iter.c:748 bio_copy_from_iter block/blk-map.c:55 [inline] bio_copy_user_iov block/blk-map.c:210 [inline] blk_rq_map_user_iov+0x13a7/0x2330 block/blk-map.c:661 blk_rq_map_user block/blk-map.c:690 [inline] blk_rq_map_user_io+0x288/0x420 block/blk-map.c:723 sg_start_req drivers/scsi/sg.c:1807 [inline] sg_common_write+0xd7f/0x14d0 drivers/scsi/sg.c:803 sg_write+0xa5e/0xf10 drivers/scsi/sg.c:707 vfs_write+0x2dd/0xbb0 fs/read_write.c:582 ksys_write+0x1a0/0x2c0 fs/read_write.c:637 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f979ec8c0f9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 19 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 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f979f9a9168 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007f979edabf80 RCX: 00007f979ec8c0f9 RDX: 0000000000000090 RSI: 00000000200023c0 RDI: 0000000000000004 RBP: 00007f979ece7ae9 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffd72b2127f R14: 00007f979f9a9300 R15: 0000000000022000