loop3: detected capacity change from 0 to 264192
------------[ cut here ]------------
WARNING: kernel/printk/printk_ringbuffer.c:1278 at get_data+0x364/0x400, CPU#0: syz-executor.3/9470
Modules linked in:
CPU: 0 UID: 0 PID: 9470 Comm: syz-executor.3 Not tainted 6.18.0-rc3-next-20251031 #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 17 b8 5b 00 e9 a9 fe ff ff e8 4d bb 1e 00 90 <0f> 0b 90 45 31 e4 e9 3b ff ff ff e8 3c bb 1e 00 90 0f 0b 90 45 31
RSP: 0018:ffff88801ae4f220 EFLAGS: 00010212
RAX: 000000000000109c RBX: ffff88801ae4f338 RCX: ffffc9000ac63000
RDX: 0000000000040000 RSI: ffffffff81555ba3 RDI: 0000000000000006
RBP: ffff88801ae4f300 R08: 00000000000010ee R09: 000000faf089c256
R10: 0000000000000000 R11: 000024fe6200002e R12: ffffffff85d30790
R13: 00003fffffffffff R14: 0000000000000000 R15: 0000000000000000
FS:  00007f04124c3700(0000) GS:ffff8880e53ed000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f04124c4000 CR3: 000000003cca1000 CR4: 0000000000350ef0
Call Trace:
 <TASK>
 _prb_read_valid+0x2f3/0x830
 prb_read_valid+0x78/0xa0
 printk_get_next_message+0x10b/0x570
 console_flush_one_record+0x64f/0xb20
 __console_flush_and_unlock+0xb1/0x1d0
 vprintk_emit+0x4c1/0x690
 _printk+0xbe/0xf0
 logfc+0x46f/0x6e0
 fs_lookup_param+0x3af/0x570
 ext4_parse_param+0xb19/0x1e10
 vfs_parse_fs_param+0x208/0x3d0
 vfs_parse_fs_qstr+0x138/0x1c0
 vfs_parse_monolithic_sep+0x198/0x220
 path_mount+0x6d0/0x2130
 __x64_sys_mount+0x293/0x310
 do_syscall_64+0xbf/0x390
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f0414f4f04a
Code: 48 c7 c2 bc ff ff ff f7 d8 64 89 02 b8 ff ff ff ff eb d2 e8 b8 04 00 00 0f 1f 84 00 00 00 00 00 49 89 ca b8 a5 00 00 00 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:00007f04124c2fa8 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00000000200043c0 RCX: 00007f0414f4f04a
RDX: 0000000020002f80 RSI: 0000000020002fc0 RDI: 00007f04124c3000
RBP: 00007f04124c3040 R08: 00007f04124c3040 R09: 0000000020002f80
R10: 0000000000000001 R11: 0000000000000206 R12: 0000000020002f80
R13: 0000000020002fc0 R14: 00007f04124c3000 R15: 0000000020004480
 </TASK>
irq event stamp: 1931
hardirqs last  enabled at (1937): [<ffffffff8154e480>] vprintk_emit+0x650/0x690
hardirqs last disabled at (1942): [<ffffffff8154e411>] vprintk_emit+0x5e1/0x690
softirqs last  enabled at (1550): [<ffffffff813bc0ec>] handle_softirqs+0x50c/0x770
softirqs last disabled at (1521): [<ffffffff813bc484>] __irq_exit_rcu+0xc4/0x100
---[ end trace 0000000000000000 ]---
EXT4-fs: error: could not find journal device path
loop3: detected capacity change from 0 to 127
loop3: detected capacity change from 0 to 8
loop3: detected capacity change from 0 to 8
ext2: Unknown parameter 'obj_role'
loop1: detected capacity change from 0 to 264192
loop6: detected capacity change from 0 to 4
ext3: Unknown parameter 'subj_role'
loop2: detected capacity change from 0 to 4
loop3: detected capacity change from 0 to 264192
journal_path: Non-blockdev passed as './file0'
EXT4-fs: error: could not find journal device path
loop7: detected capacity change from 0 to 264192
loop3: detected capacity change from 0 to 127
journal_path: Non-blockdev passed as './file0'
EXT4-fs: error: could not find journal device path
loop3: detected capacity change from 0 to 8
loop7: detected capacity change from 0 to 8
ext2: Unknown parameter 'obj_role'
loop3: detected capacity change from 0 to 8
ext2: Unknown parameter 'obj_role'
loop4: detected capacity change from 0 to 264192
ext3: Unknown parameter 'subj_role'
loop0: detected capacity change from 0 to 264192
journal_path: Non-blockdev passed as './file0'
EXT4-fs: error: could not find journal device path
loop0: detected capacity change from 0 to 8
loop0: detected capacity change from 0 to 8
ext2: Unknown parameter 'obj_role'