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WARNING: kernel/printk/printk_ringbuffer.c:1278 at get_data+0x364/0x400, CPU#1: syz-executor.4/13973
Modules linked in:
CPU: 1 UID: 0 PID: 13973 Comm: syz-executor.4 Not tainted 6.18.0-rc4-next-20251107 #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 57 c7 5c 00 e9 a9 fe ff ff e8 7d 1d 1f 00 90 <0f> 0b 90 45 31 e4 e9 3b ff ff ff e8 6c 1d 1f 00 90 0f 0b 90 45 31
RSP: 0018:ffff88805585f340 EFLAGS: 00010216
RAX: 00000000000009f6 RBX: ffff88805585f458 RCX: ffffc9000f88d000
RDX: 0000000000040000 RSI: ffffffff8155b1b3 RDI: 0000000000000006
RBP: ffff88805585f420 R08: 0000000000000ffb R09: 000001fce42b9a66
R10: 0000000000000000 R11: 0000369562000022 R12: ffffffff85d2e610
R13: 00003fffffffffff R14: 0000000000000000 R15: 0000000000000000
FS:  00007fc427b9d700(0000) GS:ffff8880e5498000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fc427b9e000 CR3: 0000000055bee000 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
 path_mount+0x6d6/0x2140
 __x64_sys_mount+0x293/0x310
 do_syscall_64+0xbf/0x430
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fc42a64a04a
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:00007fc427b9cfa8 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fc42a64a04a
RDX: 0000000020000380 RSI: 0000000020000140 RDI: 0000000000000000
RBP: 00007fc427b9d040 R08: 00007fc427b9d040 R09: 0000000020000380
R10: 0000000000000000 R11: 0000000000000202 R12: 0000000020000380
R13: 0000000020000140 R14: 00007fc427b9d000 R15: 0000000020000040
 </TASK>
irq event stamp: 683
hardirqs last  enabled at (689): [<ffffffff81553a90>] vprintk_emit+0x650/0x690
hardirqs last disabled at (694): [<ffffffff81553a21>] vprintk_emit+0x5e1/0x690
softirqs last  enabled at (486): [<ffffffff813bc48c>] handle_softirqs+0x50c/0x770
softirqs last disabled at (455): [<ffffffff813bc824>] __irq_exit_rcu+0xc4/0x100
---[ end trace 0000000000000000 ]---
tmpfs: Unknown parameter './file0'