sg_write: data in/out 917468/251 bytes for SCSI command 0x0-- guessing data in;
   program syz-executor.4 not setting count and/or reply_len properly
------------[ cut here ]------------
WARNING: CPU: 0 PID: 19153 at lib/iov_iter.c:623 _copy_from_iter+0x2b2/0x1140
Modules linked in:
CPU: 0 PID: 19153 Comm: syz-executor.4 Not tainted 6.2.0-next-20230227 #1
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014
RIP: 0010:_copy_from_iter+0x2b2/0x1140
Code: 5d 41 5e 41 5f e9 f2 c8 34 02 e8 d9 be 35 ff be 73 02 00 00 48 c7 c7 e0 dc 9e 84 e8 08 ae 59 ff e9 51 fe ff ff e8 be be 35 ff <0f> 0b 45 31 f6 eb 87 e8 b2 be 35 ff 31 ff 89 ee e8 19 ba 35 ff 40
RSP: 0018:ffff888033bb7608 EFLAGS: 00010216
RAX: 00000000000054e5 RBX: 0000000000000000 RCX: ffffc9000ba60000
RDX: 0000000000040000 RSI: ffffffff8215b6f2 RDI: 0000000000000001
RBP: 0000000000001000 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000000
R13: ffff888033bb7838 R14: 0000000000001000 R15: ffff888033bb7838
FS:  00007f6cf1a89700(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f3dc297a7d0 CR3: 00000000377f8000 CR4: 0000000000350ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <TASK>
 copy_page_from_iter+0x251/0x430
 blk_rq_map_user_iov+0xb41/0x16c0
 blk_rq_map_user_io+0x1d1/0x200
 sg_common_write.constprop.0+0xd8d/0x15f0
 sg_write.part.0+0x698/0xac0
 sg_write+0x8d/0xe0
 vfs_write+0x2cf/0xdc0
 ksys_write+0x12b/0x260
 do_syscall_64+0x3f/0x90
 entry_SYSCALL_64_after_hwframe+0x72/0xdc
RIP: 0033:0x7f6cf4513b19
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:00007f6cf1a89188 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f6cf4626f60 RCX: 00007f6cf4513b19
RDX: 0000000000000125 RSI: 00000000200003c0 RDI: 0000000000000006
RBP: 00007f6cf456df6d R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffc0e9055af R14: 00007f6cf1a89300 R15: 0000000000022000
 </TASK>
irq event stamp: 4411
hardirqs last  enabled at (4455): [<ffffffff812fa728>] __up_console_sem+0x78/0x80
hardirqs last disabled at (4518): [<ffffffff812fa70d>] __up_console_sem+0x5d/0x80
softirqs last  enabled at (1378): [<ffffffff8118dd0c>] __irq_exit_rcu+0xcc/0x110
softirqs last disabled at (1323): [<ffffffff8118dd0c>] __irq_exit_rcu+0xcc/0x110
---[ end trace 0000000000000000 ]---
FAULT_INJECTION: forcing a failure.
name fail_usercopy, interval 1, probability 0, space 0, times 0
CPU: 0 PID: 19164 Comm: syz-executor.1 Tainted: G        W          6.2.0-next-20230227 #1
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014
Call Trace:
 <TASK>
 dump_stack_lvl+0xc1/0xf0
 should_fail_ex+0x4b4/0x5b0
 _copy_to_user+0x2e/0x150
 simple_read_from_buffer+0xd0/0x170
 proc_fail_nth_read+0x19c/0x230
 vfs_read+0x257/0x940
 ksys_read+0x12b/0x260
 do_syscall_64+0x3f/0x90
 entry_SYSCALL_64_after_hwframe+0x72/0xdc
RIP: 0033:0x7ff24b55c69c
Code: ec 28 48 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 f9 fc ff ff 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 31 c0 0f 05 <48> 3d 00 f0 ff ff 77 34 44 89 c7 48 89 44 24 08 e8 2f fd ff ff 48
RSP: 002b:00007ff248b1f170 EFLAGS: 00000246 ORIG_RAX: 0000000000000000
RAX: ffffffffffffffda RBX: ffffffffffffffff RCX: 00007ff24b55c69c
RDX: 000000000000000f RSI: 00007ff248b1f1e0 RDI: 0000000000000006
RBP: 00007ff248b1f1d0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
R13: 00007ffcb6016cbf R14: 00007ff248b1f300 R15: 0000000000022000
 </TASK>