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: 12356 at lib/iov_iter.c:376 _copy_from_iter+0x2b2/0x1140
Modules linked in:
CPU: 0 PID: 12356 Comm: syz-executor.4 Not tainted 6.3.0-rc3-next-20230324 #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 82 ce 33 02 e8 19 91 36 ff be 7c 01 00 00 48 c7 c7 e0 c4 9e 84 e8 48 86 5a ff e9 51 fe ff ff e8 fe 90 36 ff <0f> 0b 45 31 f6 eb 87 e8 f2 90 36 ff 31 ff 89 ee e8 29 8c 36 ff 40
RSP: 0018:ffff888037f0f608 EFLAGS: 00010212
RAX: 0000000000003df2 RBX: 0000000000000000 RCX: ffffc90002bed000
RDX: 0000000000040000 RSI: ffffffff8214f722 RDI: 0000000000000001
RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000001000
R13: ffff888037f0f838 R14: 0000000000001000 R15: ffff888037f0f838
FS:  00007f7f4d6f8700(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000555556cb5c18 CR3: 000000000e77e000 CR4: 0000000000350ef0
DR0: 0000000020000100 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <TASK>
 copy_page_from_iter+0xe3/0x180
 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+0x2d8/0xdd0
 ksys_write+0x12b/0x260
 do_syscall_64+0x3f/0x90
 entry_SYSCALL_64_after_hwframe+0x72/0xdc
RIP: 0033:0x7f7f50182b19
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:00007f7f4d6f8188 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f7f50295f60 RCX: 00007f7f50182b19
RDX: 0000000000000125 RSI: 00000000200003c0 RDI: 0000000000000005
RBP: 00007f7f501dcf6d R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffcdaf145bf R14: 00007f7f4d6f8300 R15: 0000000000022000
 </TASK>
irq event stamp: 6657
hardirqs last  enabled at (6729): [<ffffffff812f95c8>] __up_console_sem+0x78/0x80
hardirqs last disabled at (6838): [<ffffffff812f95ad>] __up_console_sem+0x5d/0x80
softirqs last  enabled at (4446): [<ffffffff8118dbfc>] __irq_exit_rcu+0xcc/0x110
softirqs last disabled at (4291): [<ffffffff8118dbfc>] __irq_exit_rcu+0xcc/0x110
---[ end trace 0000000000000000 ]---
SELinux: unrecognized netlink message: protocol=0 nlmsg_type=61 sclass=netlink_route_socket pid=12363 comm=syz-executor.4
SELinux: unrecognized netlink message: protocol=0 nlmsg_type=61 sclass=netlink_route_socket pid=12363 comm=syz-executor.4
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
CPU: 1 PID: 12369 Comm: syz-executor.3 Tainted: G        W          6.3.0-rc3-next-20230324 #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
 should_failslab+0x9/0x20
 kmem_cache_alloc+0x5a/0x390
 jbd2__journal_start+0x194/0x810
 __ext4_journal_start_sb+0x3d7/0x560
 ext4_dirty_inode+0xa5/0x130
 __mark_inode_dirty+0x1aa/0xc10
 generic_update_time+0x21b/0x2b0
 file_modified_flags+0x2d4/0x330
 ext4_file_write_iter+0xd1d/0x1950
 do_iter_readv_writev+0x211/0x3c0
 do_iter_write+0x18b/0x700
 vfs_iter_write+0x74/0xb0
 iter_file_splice_write+0x73f/0xcb0
 direct_splice_actor+0x113/0x180
 splice_direct_to_actor+0x33a/0x8c0
 do_splice_direct+0x1bc/0x290
 do_sendfile+0xb1d/0x12b0
 __x64_sys_sendfile64+0x1d5/0x210
 do_syscall_64+0x3f/0x90
 entry_SYSCALL_64_after_hwframe+0x72/0xdc
RIP: 0033:0x7f325f58ab19
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:00007f325cb00188 EFLAGS: 00000246 ORIG_RAX: 0000000000000028
RAX: ffffffffffffffda RBX: 00007f325f69df60 RCX: 00007f325f58ab19
RDX: 0000000000000000 RSI: 0000000000000003 RDI: 0000000000000003
RBP: 00007f325cb001d0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000100000 R11: 0000000000000246 R12: 0000000000000002
R13: 00007fff5b8c7c5f R14: 00007f325cb00300 R15: 0000000000022000
 </TASK>