loop7: detected capacity change from 0 to 256
------------[ cut here ]------------
WARNING: CPU: 0 PID: 11564 at fs/ext4/file.c:611 ext4_file_write_iter+0xe2a/0x19b0
Modules linked in:
CPU: 0 PID: 11564 Comm: syz-executor.4 Not tainted 6.5.0-rc3-next-20230726 #1
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014
RIP: 0010:ext4_file_write_iter+0xe2a/0x19b0
Code: 02 84 c0 74 08 3c 03 0f 8e 81 0b 00 00 41 8b 5f 20 31 ff 83 e3 08 89 de e8 e3 a5 9b ff 85 db 0f 85 ef fc ff ff e8 36 aa 9b ff <0f> 0b e9 e3 fc ff ff e8 2a aa 9b ff 48 8b 54 24 70 48 b8 00 00 00
RSP: 0018:ffff888042c5fc28 EFLAGS: 00010216
RAX: 0000000000001051 RBX: 0000000000000000 RCX: ffffc9000e66a000
RDX: 0000000000040000 RSI: ffffffff81b1104a RDI: 0000000000000005
RBP: 0000000000000002 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000001 R12: fffffffffffffff5
R13: 0000000000000140 R14: ffff888042c5fdb0 R15: ffff888042c5fe00
FS:  00007fb93bb45700(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f9aa254fd10 CR3: 0000000033ed2000 CR4: 0000000000350ef0
Call Trace:
 <TASK>
 vfs_write+0x97d/0xda0
 ksys_write+0x122/0x250
 do_syscall_64+0x3f/0x90
 entry_SYSCALL_64_after_hwframe+0x6e/0xd8
RIP: 0033:0x7fb93e5f0b19
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:00007fb93bb45188 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007fb93e704020 RCX: 00007fb93e5f0b19
RDX: 0000000000140000 RSI: 0000000020000200 RDI: 0000000000000004
RBP: 00007fb93e64af6d R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fff57d5c07f R14: 00007fb93bb45300 R15: 0000000000022000
 </TASK>
irq event stamp: 1217
hardirqs last  enabled at (1227): [<ffffffff81309a08>] console_unlock+0x2a8/0x2e0
hardirqs last disabled at (1238): [<ffffffff813099ed>] console_unlock+0x28d/0x2e0
softirqs last  enabled at (696): [<ffffffff81190303>] irq_exit_rcu+0x93/0xc0
softirqs last disabled at (687): [<ffffffff81190303>] irq_exit_rcu+0x93/0xc0
---[ end trace 0000000000000000 ]---
FAULT_INJECTION: forcing a failure.
name fail_usercopy, interval 1, probability 0, space 0, times 0
CPU: 0 PID: 11574 Comm: syz-executor.2 Tainted: G        W          6.5.0-rc3-next-20230726 #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+0x30/0xc0
 simple_read_from_buffer+0xd0/0x170
 proc_fail_nth_read+0x1a6/0x290
 vfs_read+0x1de/0x8f0
 ksys_read+0x122/0x250
 do_syscall_64+0x3f/0x90
 entry_SYSCALL_64_after_hwframe+0x6e/0xd8
RIP: 0033:0x7f584205d69c
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:00007f583f620170 EFLAGS: 00000246 ORIG_RAX: 0000000000000000
RAX: ffffffffffffffda RBX: 0000000000140000 RCX: 00007f584205d69c
RDX: 000000000000000f RSI: 00007f583f6201e0 RDI: 0000000000000004
RBP: 00007f583f6201d0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002
R13: 00007ffc2fb045ef R14: 00007f583f620300 R15: 0000000000022000
 </TASK>