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: 1 PID: 5489 at lib/iov_iter.c:274 _copy_from_iter+0x38c/0x10f0 lib/iov_iter.c:274 Modules linked in: CPU: 1 PID: 5489 Comm: syz-executor.0 Not tainted 6.7.0-rc4-syzkaller-g33cc938e65a9 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/10/2023 RIP: 0010:_copy_from_iter+0x38c/0x10f0 lib/iov_iter.c:274 Code: 7c fd 0f 01 cb 4c 89 f9 4c 89 f7 48 89 de e8 ab ee 13 06 48 89 cb 0f 01 ca 4d 89 fc 49 29 cc e9 db fe ff ff e8 25 0d 27 fd 90 <0f> 0b 90 45 31 e4 e9 25 ff ff ff e8 14 0d 27 fd 48 8b 14 24 4c 89 RSP: 0018:ffffc900035bf620 EFLAGS: 00010293 RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff845f7068 RDX: ffff88802966a000 RSI: ffffffff845f733b RDI: 0000000000000001 RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000000 R11: ffffffff81dc3d25 R12: 0000000000000050 R13: ffffea0001e65800 R14: ffffc900035bf838 R15: 0000000000000050 FS: 00007f14b4ddb6c0(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000002000002c CR3: 00000000251b3000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: copy_page_from_iter lib/iov_iter.c:441 [inline] copy_page_from_iter+0xa5/0x120 lib/iov_iter.c:430 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+0x9e7/0x1840 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:1817 [inline] sg_common_write.constprop.0+0xd61/0x1c90 drivers/scsi/sg.c:803 sg_write+0x82f/0xe10 drivers/scsi/sg.c:707 vfs_write+0x2a4/0xdf0 fs/read_write.c:582 ksys_write+0x12f/0x250 fs/read_write.c:637 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x40/0x110 arch/x86/entry/common.c:82 entry_SYSCALL_64_after_hwframe+0x63/0x6b RIP: 0033:0x7f14b407cb29 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:00007f14b4ddb0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007f14b419bf80 RCX: 00007f14b407cb29 RDX: 0000000000000030 RSI: 0000000020000000 RDI: 0000000000000005 RBP: 00007f14b40c847a R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007f14b419bf80 R15: 00007ffc44828128