sg_write: data in/out 334/179 bytes for SCSI command 0x18-- guessing data in; program syz-executor.0 not setting count and/or reply_len properly ------------[ cut here ]------------ WARNING: CPU: 0 PID: 8984 at lib/iov_iter.c:385 _copy_from_iter+0x2f1/0x1320 Modules linked in: CPU: 0 PID: 8984 Comm: syz-executor.0 Not tainted 6.5.0-rc3-next-20230724 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:_copy_from_iter+0x2f1/0x1320 Code: b2 ff ff 89 c3 e9 1f ff ff ff e8 1a 64 35 ff be 85 01 00 00 48 c7 c7 80 2c 9f 84 e8 79 d0 59 ff e9 13 fe ff ff e8 ff 63 35 ff <0f> 0b 45 31 f6 e9 67 ff ff ff e8 f0 63 35 ff 31 ff 89 ee e8 27 5f RSP: 0018:ffff88804b68f608 EFLAGS: 00010212 RAX: 00000000000013ea RBX: 0000000000000000 RCX: ffffc90001405000 RDX: 0000000000040000 RSI: ffffffff821757d1 RDI: 0000000000000001 RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000000 R11: ffffffff846000aa R12: 000000000000014e R13: ffffea00011dc000 R14: 000000000000014e R15: ffff88804b68f838 FS: 00007f0cc948c700(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ff3a921b030 CR3: 0000000020414000 CR4: 0000000000350ef0 Call Trace: <TASK> copy_page_from_iter+0xe3/0x180 blk_rq_map_user_iov+0xb39/0x16c0 blk_rq_map_user_io+0x1d1/0x200 sg_common_write.constprop.0+0xd8d/0x15f0 sg_write.part.0+0x69e/0xac0 sg_write+0x8d/0xe0 vfs_write+0x2b9/0xda0 ksys_write+0x122/0x250 do_syscall_64+0x3f/0x90 entry_SYSCALL_64_after_hwframe+0x6e/0xd8 RIP: 0033:0x7f0ccbf16b19 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:00007f0cc948c188 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007f0ccc029f60 RCX: 00007f0ccbf16b19 RDX: 00000000000000dd RSI: 00000000200002c0 RDI: 0000000000000004 RBP: 00007f0ccbf70f6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffedacca86f R14: 00007f0cc948c300 R15: 0000000000022000 </TASK> irq event stamp: 1539 hardirqs last enabled at (1549): [<ffffffff813099d8>] console_unlock+0x2a8/0x2e0 hardirqs last disabled at (1560): [<ffffffff813099bd>] console_unlock+0x28d/0x2e0 softirqs last enabled at (1478): [<ffffffff811902d3>] irq_exit_rcu+0x93/0xc0 softirqs last disabled at (1383): [<ffffffff811902d3>] irq_exit_rcu+0x93/0xc0 ---[ end trace 0000000000000000 ]--- sg_write: data in/out 334/179 bytes for SCSI command 0x18-- guessing data in; program syz-executor.0 not setting count and/or reply_len properly sg_write: data in/out 334/179 bytes for SCSI command 0x18-- guessing data in; program syz-executor.2 not setting count and/or reply_len properly