RBP: 00007fccf0a851d0 R08: 0000000000000000 R09: 0000000000000000
R10: 00000000000a0103 R11: 0000000000000246 R12: 0000000000000002
R13: 00007ffeb5bdc14f R14: 00007fccf0a85300 R15: 0000000000022000
 </TASK>
------------[ cut here ]------------
WARNING: kernel/printk/printk_ringbuffer.c:1278 at get_data+0x364/0x400, CPU#1: syz-executor.6/6001
Modules linked in:
CPU: 1 UID: 0 PID: 6001 Comm: syz-executor.6 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:ffff88806cf08720 EFLAGS: 00010046
RAX: 0000000000010001 RBX: ffff88806cf08838 RCX: ffffffff815559d6
RDX: ffff88801bd61b80 RSI: ffffffff81555ba3 RDI: 0000000000000006
RBP: ffff88806cf08800 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: ffffffff85d30790
R13: 00003fffffffffff R14: 0000000000000000 R15: 0000000000000000
FS:  00007fccf0a85700(0000) GS:ffff8880e54ed000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fccf0a84f78 CR3: 00000000203a9000 CR4: 0000000000350ef0
Call Trace:
 <IRQ>
 _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
 wake_up_klogd_work_func+0x17c/0x1e0
 irq_work_single+0x128/0x260
 irq_work_run_list+0x91/0xc0
 update_process_times+0x12f/0x210
 tick_nohz_handler+0x414/0x6d0
 __hrtimer_run_queues+0x60f/0xac0
 hrtimer_interrupt+0x369/0x830
 __sysvec_apic_timer_interrupt+0xbb/0x330
 sysvec_apic_timer_interrupt+0x6b/0x80
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:dump_stack_lvl+0x115/0x120
Code: fc ff ff 4c 89 e2 31 f6 31 ff e8 66 57 71 fc e8 81 50 9b fc 48 89 ee 31 ff e8 57 24 bb fc e8 f2 28 bb fc e8 9d 93 c3 fc fb 5b <5d> 41 5c e9 e3 28 bb fc 0f 1f 00 90 90 90 90 90 90 90 90 90 90 90
RSP: 0018:ffff88801bbbeaf0 EFLAGS: 00000202
RAX: 00000000000001ef RBX: ffffffff85f03a20 RCX: 0000000000000040
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff84b8ee03
RBP: 0000000000000200 R08: 0000000000000001 R09: 0000000000000001
R10: ffffffff86648157 R11: 0000000000000001 R12: ffffffff8551dc20
R13: ffffffff85f03a30 R14: 0000000000000000 R15: 0000000000000000
 should_fail_ex+0x4d7/0x5e0
 should_failslab+0xc2/0x120
 kmem_cache_alloc_noprof+0x80/0x690
 __es_insert_extent+0xed2/0x1370
 ext4_es_insert_extent+0x4d0/0x1100
 ext4_ext_map_blocks+0x178d/0x5f70
 ext4_map_query_blocks+0x117/0x890
 ext4_map_blocks+0x4b3/0x14a0
 ext4_iomap_begin+0xa62/0xe80
 iomap_iter+0x55a/0x1030
 __iomap_dio_rw+0x6dd/0x1ca0
 iomap_dio_rw+0x40/0xa0
 ext4_file_write_iter+0xe16/0x1a00
 iter_file_splice_write+0xa3a/0x11f0
 direct_splice_actor+0x192/0x7b0
 splice_direct_to_actor+0x347/0x9d0
 do_splice_direct+0x179/0x250
 do_sendfile+0xa8e/0xdc0
 __x64_sys_sendfile64+0x1d3/0x210
 do_syscall_64+0xbf/0x390
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fccf350fb19
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:00007fccf0a85188 EFLAGS: 00000246 ORIG_RAX: 0000000000000028
RAX: ffffffffffffffda RBX: 00007fccf3622f60 RCX: 00007fccf350fb19
RDX: 0000000000000000 RSI: 0000000000000005 RDI: 0000000000000004
RBP: 00007fccf0a851d0 R08: 0000000000000000 R09: 0000000000000000
R10: 00000000000a0103 R11: 0000000000000246 R12: 0000000000000002
R13: 00007ffeb5bdc14f R14: 00007fccf0a85300 R15: 0000000000022000
 </TASK>
irq event stamp: 498
hardirqs last  enabled at (497): [<ffffffff84c619ab>] irqentry_exit+0x3b/0x90
hardirqs last disabled at (498): [<ffffffff84c6059f>] sysvec_apic_timer_interrupt+0xf/0x80
softirqs last  enabled at (454): [<ffffffff812c7949>] kernel_fpu_end+0x59/0x70
softirqs last disabled at (452): [<ffffffff812c8a87>] kernel_fpu_begin_mask+0x1b7/0x290
---[ end trace 0000000000000000 ]---
----------------
Code disassembly (best guess), 2 bytes skipped:
   0:	ff 4c 89 e2          	decl   -0x1e(%rcx,%rcx,4)
   4:	31 f6                	xor    %esi,%esi
   6:	31 ff                	xor    %edi,%edi
   8:	e8 66 57 71 fc       	callq  0xfc715773
   d:	e8 81 50 9b fc       	callq  0xfc9b5093
  12:	48 89 ee             	mov    %rbp,%rsi
  15:	31 ff                	xor    %edi,%edi
  17:	e8 57 24 bb fc       	callq  0xfcbb2473
  1c:	e8 f2 28 bb fc       	callq  0xfcbb2913
  21:	e8 9d 93 c3 fc       	callq  0xfcc393c3
  26:	fb                   	sti
  27:	5b                   	pop    %rbx
* 28:	5d                   	pop    %rbp <-- trapping instruction
  29:	41 5c                	pop    %r12
  2b:	e9 e3 28 bb fc       	jmpq   0xfcbb2913
  30:	0f 1f 00             	nopl   (%rax)
  33:	90                   	nop
  34:	90                   	nop
  35:	90                   	nop
  36:	90                   	nop
  37:	90                   	nop
  38:	90                   	nop
  39:	90                   	nop
  3a:	90                   	nop
  3b:	90                   	nop
  3c:	90                   	nop
  3d:	90                   	nop