sg_write: data in/out 80/6 bytes for SCSI command 0x0-- guessing data in; program syz-executor.0 not setting count and/or reply_len properly ------------[ cut here ]------------ WARNING: CPU: 0 PID: 5456 at lib/iov_iter.c:385 _copy_from_iter+0x2c2/0x1270 lib/iov_iter.c:385 Modules linked in: CPU: 0 PID: 5456 Comm: syz-executor.0 Not tainted 6.6.0-rc2-syzkaller-gce9ecca0238b #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/04/2023 RIP: 0010:_copy_from_iter+0x2c2/0x1270 lib/iov_iter.c:385 Code: 5d 41 5c 41 5d 41 5e 41 5f c3 e8 99 6b 64 fd be 85 01 00 00 48 c7 c7 e0 9a e8 8a e8 f8 9b a3 fd e9 48 fe ff ff e8 7e 6b 64 fd <0f> 0b 45 31 ff eb 88 e8 72 6b 64 fd 31 ff 89 ee e8 99 66 64 fd 40 RSP: 0018:ffffc9000388f5f0 EFLAGS: 00010293 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: ffff88801af96200 RSI: ffffffff842259d2 RDI: 0000000000000001 RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000000 R11: ffffffff81db8595 R12: 0000000000000050 R13: ffffc9000388f838 R14: 0000000000000050 R15: 0000160000000000 FS: 00007f63eebfe6c0(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000002019a000 CR3: 000000007529a000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: copy_page_from_iter lib/iov_iter.c:542 [inline] copy_page_from_iter+0xa5/0x120 lib/iov_iter.c:531 bio_copy_from_iter block/blk-map.c:56 [inline] bio_copy_user_iov block/blk-map.c:211 [inline] blk_rq_map_user_iov+0x9d5/0x1860 block/blk-map.c:661 blk_rq_map_user block/blk-map.c:690 [inline] blk_rq_map_user_io+0x202/0x230 block/blk-map.c:723 sg_start_req drivers/scsi/sg.c:1818 [inline] sg_common_write.constprop.0+0xd61/0x1c90 drivers/scsi/sg.c:803 sg_write+0x82f/0xe10 drivers/scsi/sg.c:707 vfs_write+0x2a4/0xe40 fs/read_write.c:582 ksys_write+0x12f/0x250 fs/read_write.c:637 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x38/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f63ef87cb29 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:00007f63eebfe0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007f63ef99bf80 RCX: 00007f63ef87cb29 RDX: 0000000000000030 RSI: 0000000020000000 RDI: 0000000000000005 RBP: 00007f63ef8c847a R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007f63ef99bf80 R15: 00007ffd3ecd8e48