loop7: detected capacity change from 0 to 264192
loop2: 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.7/16017
Modules linked in:
CPU: 0 UID: 0 PID: 16017 Comm: syz-executor.7 Not tainted 6.18.0-rc2-next-20251024 #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 37 89 5b 00 e9 a9 fe ff ff e8 fd b6 1e 00 90 <0f> 0b 90 45 31 e4 e9 3b ff ff ff e8 ec b6 1e 00 90 0f 0b 90 45 31
RSP: 0018:ffff8880097a7278 EFLAGS: 00010212
RAX: 0000000000003502 RBX: ffff8880097a7390 RCX: ffffc900076c5000
RDX: 0000000000040000 RSI: ffffffff81555423 RDI: 0000000000000006
RBP: ffff8880097a7358 R08: 000000000000115c R09: 0000016fe4123be3
R10: 0000000000000000 R11: 00003e9162000022 R12: ffffffff85d30690
R13: 00003fffffffffff R14: 0000000000000000 R15: 0000000000000000
FS:  00007f25c2f0d700(0000) GS:ffff8880e53f4000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f5fd0085088 CR3: 0000000013d98000 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
 vfs_parse_fs_param+0x300/0x3d0
 vfs_parse_fs_qstr+0x138/0x1c0
 vfs_parse_monolithic_sep+0x198/0x220
 nfs_fs_context_parse_monolithic+0x169c/0x28b0
 path_mount+0x6d0/0x2130
 __x64_sys_mount+0x293/0x310
 do_syscall_64+0xbf/0x390
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f25c59ba04a
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:00007f25c2f0cfa8 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 0000000020003b00 RCX: 00007f25c59ba04a
RDX: 0000000020000800 RSI: 0000000020000840 RDI: 00007f25c2f0d000
RBP: 00007f25c2f0d040 R08: 00007f25c2f0d040 R09: 0000000020000800
R10: 0000000000804000 R11: 0000000000000202 R12: 0000000020000800
R13: 0000000020000840 R14: 00007f25c2f0d000 R15: 0000000020003bc0
 </TASK>
irq event stamp: 1291
hardirqs last  enabled at (1297): [<ffffffff8154e280>] vprintk_emit+0x650/0x690
hardirqs last disabled at (1302): [<ffffffff8154e211>] vprintk_emit+0x5e1/0x690
softirqs last  enabled at (1140): [<ffffffff813bc05c>] handle_softirqs+0x50c/0x770
softirqs last disabled at (1109): [<ffffffff813bc3f4>] __irq_exit_rcu+0xc4/0x100
---[ end trace 0000000000000000 ]---
loop6: detected capacity change from 0 to 264192
loop1: detected capacity change from 0 to 264192
nfs: Unknown parameter 'netdevsim'
loop4: detected capacity change from 0 to 264192
loop0: detected capacity change from 0 to 264192
loop5: detected capacity change from 0 to 264192
nfs: Unknown parameter 'netdevsim'
nfs: Unknown parameter 'netdevsim'
nfs: Unknown parameter 'netdevsim'
loop3: detected capacity change from 0 to 2
nfs: Unknown parameter 'measure'
loop0: detected capacity change from 0 to 264192
loop1: detected capacity change from 0 to 264192
nfs: Unknown parameter 'netdevsim'
nfs: Unknown parameter 'netdevsim'
loop2: detected capacity change from 0 to 264192
loop7: detected capacity change from 0 to 264192
nfs: Unknown parameter 'netdevsim'
loop4: detected capacity change from 0 to 264192
loop3: detected capacity change from 0 to 2
nfs: Unknown parameter 'netdevsim'
loop5: detected capacity change from 0 to 264192
nfs: Unknown parameter 'netdevsim'
nfs: Unknown parameter 'measure'
loop0: detected capacity change from 0 to 264192
nfs: Unknown parameter 'netdevsim'
loop5: detected capacity change from 0 to 264192
nfs: Unknown parameter 'netdevsim'
loop6: detected capacity change from 0 to 264192
loop1: detected capacity change from 0 to 264192
nfs: Unknown parameter 'netdevsim'
loop3: detected capacity change from 0 to 2
nfs: Unknown parameter 'measure'
loop2: detected capacity change from 0 to 264192
loop7: detected capacity change from 0 to 264192
loop0: detected capacity change from 0 to 264192
nfs: Unknown parameter 'netdevsim'
nfs: Unknown parameter 'netdevsim'
loop4: detected capacity change from 0 to 264192
nfs: Unknown parameter 'netdevsim'
loop6: detected capacity change from 0 to 264192
loop5: detected capacity change from 0 to 264192
nfs: Unknown parameter 'netdevsim'
loop6: detected capacity change from 0 to 2
loop0: detected capacity change from 0 to 264192
nfs: Unknown parameter 'netdevsim'
loop2: detected capacity change from 0 to 264192
loop3: detected capacity change from 0 to 2
loop4: detected capacity change from 0 to 264192
nfs: Unknown parameter 'measure'
loop1: detected capacity change from 0 to 264192
nfs: Unknown parameter 'netdevsim'
nfs: Unknown parameter 'netdevsim'
loop7: detected capacity change from 0 to 264192
nfs: Unknown parameter 'netdevsim'