sg_write: data in/out 101/102 bytes for SCSI command 0x0-- guessing data in; program syz-executor.4 not setting count and/or reply_len properly ------------[ cut here ]------------ WARNING: CPU: 1 PID: 22280 at lib/iov_iter.c:274 _copy_from_iter+0x331/0x1d40 lib/iov_iter.c:274 Modules linked in: CPU: 1 PID: 22280 Comm: syz-executor.4 Not tainted 6.7.0-syzkaller-12377-g9d1694dc91ce #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023 RIP: 0010:_copy_from_iter+0x331/0x1d40 lib/iov_iter.c:274 Code: 28 00 00 00 48 3b 84 24 20 01 00 00 0f 85 63 19 00 00 4c 89 e0 48 8d 65 d8 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 d0 2b 06 fd 90 <0f> 0b 90 45 31 e4 eb 97 e8 c2 2b 06 fd 48 8b 7c 24 68 4c 89 e6 4c RSP: 0018:ffffc9000396f220 EFLAGS: 00010283 RAX: ffffffff8488cdc0 RBX: 0000000000000000 RCX: 0000000000040000 RDX: ffffc9000b8e8000 RSI: 0000000000004e0f RDI: 0000000000004e10 RBP: ffffc9000396f398 R08: ffffffff8488cb47 R09: 0000000000000200 R10: dffffc0000000000 R11: ffffed10035db40f R12: 0000000000000066 R13: 0000000000000000 R14: ffffc9000396f5b0 R15: ffffc9000396f5b3 FS: 00007f1c79b956c0(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000555555e52938 CR3: 000000002d864000 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:441 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+0x141d/0x2540 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:1817 [inline] sg_common_write+0xd7f/0x14d0 drivers/scsi/sg.c:803 sg_write+0xa61/0xf10 drivers/scsi/sg.c:707 vfs_write+0x2a0/0xca0 fs/read_write.c:588 ksys_write+0x1a0/0x2c0 fs/read_write.c:643 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf5/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x63/0x6b RIP: 0033:0x7f1c78e7cda9 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:00007f1c79b950c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007f1c78fabf80 RCX: 00007f1c78e7cda9 RDX: 0000000000000090 RSI: 00000000200001c0 RDI: 0000000000000004 RBP: 00007f1c78ec947a R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007f1c78fabf80 R15: 00007ffdddf3d9e8