loop5: detected capacity change from 0 to 512
kobject: kobject_add_internal failed for wpan13 (error: -12 parent: net)
loop0: detected capacity change from 0 to 512
------------[ cut here ]------------
WARNING: kernel/printk/printk_ringbuffer.c:1278 at get_data+0x364/0x400, CPU#1: in:imklog/174
Modules linked in:
CPU: 1 UID: 0 PID: 174 Comm: in:imklog Not tainted 6.18.0-rc2-next-20251023 #1 PREEMPT(voluntary) 
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014
RIP: 0010:get_data+0x364/0x400
Code: e8 83 e0 07 83 c0 03 38 d0 0f 8c be fe ff ff 84 d2 0f 84 b6 fe ff ff 48 89 ef e8 07 89 5b 00 e9 a9 fe ff ff e8 cd b7 1e 00 90 <0f> 0b 90 45 31 e4 e9 3b ff ff ff e8 bc b7 1e 00 90 0f 0b 90 45 31
RSP: 0018:ffff888015fa7768 EFLAGS: 00010293
RAX: 0000000000000000 RBX: ffff888015fa7880 RCX: ffffffff81556526
RDX: ffff88800f3dd280 RSI: ffffffff815566f3 RDI: 0000000000000006
RBP: ffff888015fa7848 R08: 0000000000000fc6 R09: 00000095d2c0446c
R10: 0000000000000000 R11: 00003a8382000021 R12: ffffffff85d30690
R13: 00003fffffffffff R14: 0000000000000000 R15: 0000000000000000
FS:  00007f4560e02700(0000) GS:ffff8880e54f6000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055721d648280 CR3: 000000000d8ad000 CR4: 0000000000350ef0
Call Trace:
 <TASK>
 _prb_read_valid+0x2f3/0x830
loop4: detected capacity change from 0 to 512
 prb_read_valid+0x78/0xa0
 syslog_print+0x37c/0x5c0
loop1: detected capacity change from 0 to 272
 do_syslog.part.0+0x20b/0x5b0
 do_syslog+0xcd/0x110
 kmsg_read+0x8e/0xc0
 proc_reg_read+0x120/0x310
 vfs_read+0x1eb/0xc70
 ksys_read+0x121/0x240
 do_syscall_64+0xbf/0x390
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f456184508c
Code: ec 28 48 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 89 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 bf fc ff ff 48
RSP: 002b:00007f4560de14d0 EFLAGS: 00000246 ORIG_RAX: 0000000000000000
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f456184508c
RDX: 0000000000001fa0 RSI: 00007f4560de1d00 RDI: 0000000000000005
RBP: 000055b5c8c944c0 R08: 0000000000000000 R09: 000055b5c8c90e88
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f4560de1d00
R13: 0000000000001fa0 R14: 00007f4560de1d00 R15: 00007f4560de1d26
 </TASK>
irq event stamp: 47697
hardirqs last  enabled at (47707): [<ffffffff81545108>] __up_console_sem+0x78/0x80
hardirqs last disabled at (47716): [<ffffffff815450ed>] __up_console_sem+0x5d/0x80
softirqs last  enabled at (47526): [<ffffffff813bc0cc>] handle_softirqs+0x50c/0x770
softirqs last disabled at (47511): [<ffffffff813bc464>] __irq_exit_rcu+0xc4/0x100
EXT4-fs (loop1): bad geometry: block count 128 exceeds size of device (68 blocks)
---[ end trace 0000000000000000 ]---
EXT4-fs (loop5): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: none.
ext4 filesystem being mounted at /syzkaller-testdir488171540/syzkaller.5U2hsw/98/file0 supports timestamps until 2038-01-19 (0x7fffffff)
EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: none.
ext4 filesystem being mounted at /syzkaller-testdir272778002/syzkaller.QDS4cn/84/file0 supports timestamps until 2038-01-19 (0x7fffffff)
EXT4-fs (loop5): unmounting filesystem 00000000-0000-0000-0000-000000000000.
loop4: detected capacity change from 0 to 512
No source specified
No source specified
EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000.
loop5: detected capacity change from 0 to 512
No source specified
loop0: detected capacity change from 0 to 512
loop4: detected capacity change from 0 to 272
EXT4-fs (loop4): bad geometry: block count 128 exceeds size of device (68 blocks)