Buffer I/O error on dev loop2, logical block 10, lost async page write
sg_write: data in/out 917468/251 bytes for SCSI command 0x0-- guessing data in;
   program syz-executor.6 not setting count and/or reply_len properly
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WARNING: CPU: 0 PID: 4308 at lib/iov_iter.c:644 _copy_from_iter+0x2f1/0x1320
Modules linked in:
CPU: 0 PID: 4308 Comm: syz-executor.6 Not tainted 6.4.0-rc1-next-20230508 #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: 9c ff ff 89 c3 e9 1f ff ff ff e8 fa 0a 36 ff be 88 02 00 00 48 c7 c7 e0 d4 9e 84 e8 69 15 5a ff e9 13 fe ff ff e8 df 0a 36 ff <0f> 0b 45 31 f6 e9 67 ff ff ff e8 d0 0a 36 ff 31 ff 89 ee e8 07 06
RSP: 0018:ffff88801fe7f608 EFLAGS: 00010216
RAX: 0000000000004bee RBX: 0000000000000000 RCX: ffffc90011c65000
RDX: 0000000000040000 RSI: ffffffff8215d821 RDI: 0000000000000001
RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000001000
R13: ffffea0001072e00 R14: 0000000000001000 R15: ffff88801fe7f838
FS:  00007f26bd414700(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fd676922f64 CR3: 000000000f1e0000 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
loop1: detected capacity change from 0 to 560
 sg_common_write.constprop.0+0xd8d/0x15f0
 sg_write.part.0+0x698/0xac0
 sg_write+0x8d/0xe0
 vfs_write+0x2b8/0xd40
 ksys_write+0x12b/0x260
 do_syscall_64+0x3f/0x90
 entry_SYSCALL_64_after_hwframe+0x72/0xdc
RIP: 0033:0x7f26bfe9eb19
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:00007f26bd414188 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f26bffb1f60 RCX: 00007f26bfe9eb19
RDX: 0000000000000125 RSI: 00000000200003c0 RDI: 0000000000000004
RBP: 00007f26bfef8f6d R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffd2de876af R14: 00007f26bd414300 R15: 0000000000022000
 </TASK>
irq event stamp: 4641
hardirqs last  enabled at (4651): [<ffffffff812fd558>] __up_console_sem+0x78/0x80
hardirqs last disabled at (4706): [<ffffffff812fd53d>] __up_console_sem+0x5d/0x80
softirqs last  enabled at (1624): [<ffffffff8118d37c>] __irq_exit_rcu+0xcc/0x110
softirqs last disabled at (1357): [<ffffffff8118d37c>] __irq_exit_rcu+0xcc/0x110
---[ end trace 0000000000000000 ]---
EXT4-fs (loop1): ext4_check_descriptors: Block bitmap for group 0 not in group (block 196610)!
EXT4-fs (loop1): group descriptors corrupted!
SELinux: unrecognized netlink message: protocol=0 nlmsg_type=61 sclass=netlink_route_socket pid=4308 comm=syz-executor.6
audit: type=1400 audit(1683571162.120:13): avc:  denied  { read } for  pid=4306 comm="syz-executor.6" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=perf_event permissive=1
sg_write: data in/out 917468/251 bytes for SCSI command 0x0-- guessing data in;
   program syz-executor.6 not setting count and/or reply_len properly
SELinux: unrecognized netlink message: protocol=0 nlmsg_type=61 sclass=netlink_route_socket pid=4320 comm=syz-executor.6