RBP: 00007fddde7211d0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
R13: 00007ffebb73d4af R14: 00007fddde721300 R15: 0000000000022000
------------[ cut here ]------------
WARNING: kernel/printk/printk_ringbuffer.c:1278 at get_data+0x364/0x400, CPU#1: syz-executor.4/62019
Modules linked in:
CPU: 1 UID: 0 PID: 62019 Comm: syz-executor.4 Not tainted 6.18.0-rc4-next-20251103 #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 c7 ed 5b 00 e9 a9 fe ff ff e8 cd f1 1e 00 90 <0f> 0b 90 45 31 e4 e9 3b ff ff ff e8 bc f1 1e 00 90 0f 0b 90 45 31
RSP: 0018:ffff88806cf086b8 EFLAGS: 00010046
RAX: 0000000080010001 RBX: ffff88806cf087d0 RCX: ffffffff81558b86
RDX: ffff88801b390000 RSI: ffffffff81558d53 RDI: 0000000000000006
RBP: ffff88806cf08798 R08: 0000000000000d45 R09: 0000019b34083da0
R10: 0000000000000000 R11: 0000f27482000046 R12: ffffffff85d2e130
R13: 00003fffffffffff R14: 0000000000000000 R15: 0000000000000000
FS: 0000000000000000(0000) GS:ffff8880e54a8000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fddde720f78 CR3: 000000000d7ed000 CR4: 0000000000350ef0
Call Trace:
_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+0x4ff/0x8c0
__hrtimer_run_queues+0x60f/0xac0
hrtimer_interrupt+0x369/0x830
__sysvec_apic_timer_interrupt+0xbb/0x330
sysvec_apic_timer_interrupt+0x6b/0x80
asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:__sanitizer_cov_trace_const_cmp8+0x0/0x20
Code: 0c 24 89 f2 89 fe bf 05 00 00 00 e9 1a fe ff ff 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 0f 1e fa 48 8b 0c 24 48 89 f2 48 89 fe bf 07 00 00 00 e9 e8 fd
RSP: 0018:ffff88805350f668 EFLAGS: 00000246
RAX: 1ffffd40001e4a60 RBX: ffffea0000f25300 RCX: dffffc0000000000
RDX: fffff940001e4a61 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00000000000000b4 R08: 0000000000000000 R09: fffff940001e4a60
R10: ffffea0000f25307 R11: 0000000000000001 R12: 0000000000000000
R13: 00007feaec745000 R14: ffff88805350fad0 R15: 800000003c94c007
unmap_page_range+0xb90/0x3690
unmap_single_vma.constprop.0+0x153/0x230
unmap_vmas+0x1d6/0x430
exit_mmap+0x17a/0xaa0
mmput+0xd5/0x390
do_exit+0x7a5/0x2980
do_group_exit+0xd3/0x2a0
get_signal+0x2311/0x2340
arch_do_signal_or_restart+0x80/0x780
exit_to_user_mode_loop+0x7d/0xf0
do_syscall_64+0x3cd/0x3f0
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7feaed681b19
Code: Unable to access opcode bytes at 0x7feaed681aef.
RSP: 002b:00007feaeabf7218 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: fffffffffffffe00 RBX: 00007feaed794f68 RCX: 00007feaed681b19
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007feaed794f68
RBP: 00007feaed794f60 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007feaed794f6c
R13: 00007ffef49127cf R14: 00007feaeabf7300 R15: 0000000000022000
irq event stamp: 756
hardirqs last enabled at (755): [] finish_task_switch.isra.0+0x206/0x840
hardirqs last disabled at (756): [] sysvec_apic_timer_interrupt+0xf/0x80
softirqs last enabled at (750): [] handle_softirqs+0x50c/0x770
softirqs last disabled at (671): [] __irq_exit_rcu+0xc4/0x100
---[ end trace 0000000000000000 ]---
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
CPU: 0 UID: 0 PID: 62125 Comm: syz-executor.3 Tainted: G W 6.18.0-rc4-next-20251103 #1 PREEMPT(voluntary)
Tainted: [W]=WARN
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014
Call Trace:
dump_stack_lvl+0xfa/0x120
should_fail_ex+0x4d7/0x5e0
should_failslab+0xc2/0x120
kmem_cache_alloc_noprof+0x80/0x690
__inet_hash_connect+0x9f9/0x1b60
tcp_v4_connect+0xd8c/0x1be0
tcp_v6_connect+0x921/0x1bb0
__inet_stream_connect+0x3a5/0xed0
inet_stream_connect+0x57/0xa0
__sys_connect_file+0x14b/0x1b0
__sys_connect+0x161/0x1a0
__x64_sys_connect+0x73/0xb0
do_syscall_64+0xbf/0x3f0
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fe7af9abb19
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:00007fe7acf21188 EFLAGS: 00000246 ORIG_RAX: 000000000000002a
RAX: ffffffffffffffda RBX: 00007fe7afabef60 RCX: 00007fe7af9abb19
RDX: 0000000000000074 RSI: 0000000020000380 RDI: 0000000000000004
RBP: 00007fe7acf211d0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
R13: 00007ffeb42be3df R14: 00007fe7acf21300 R15: 0000000000022000
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
CPU: 0 UID: 0 PID: 62137 Comm: syz-executor.6 Tainted: G W 6.18.0-rc4-next-20251103 #1 PREEMPT(voluntary)
Tainted: [W]=WARN
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014
Call Trace:
dump_stack_lvl+0xfa/0x120
should_fail_ex+0x4d7/0x5e0
should_failslab+0xc2/0x120
kmem_cache_alloc_noprof+0x80/0x690
__inet_hash_connect+0x9f9/0x1b60
tcp_v4_connect+0xd8c/0x1be0
tcp_v6_connect+0x921/0x1bb0
__inet_stream_connect+0x3a5/0xed0
inet_stream_connect+0x57/0xa0
__sys_connect_file+0x14b/0x1b0
__sys_connect+0x161/0x1a0
__x64_sys_connect+0x73/0xb0
do_syscall_64+0xbf/0x3f0
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f14579ceb19
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:00007f1454f44188 EFLAGS: 00000246 ORIG_RAX: 000000000000002a
RAX: ffffffffffffffda RBX: 00007f1457ae1f60 RCX: 00007f14579ceb19
RDX: 0000000000000074 RSI: 0000000020000380 RDI: 0000000000000004
RBP: 00007f1454f441d0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
R13: 00007ffc3b17332f R14: 00007f1454f44300 R15: 0000000000022000
----------------
Code disassembly (best guess):
0: 0c 24 or $0x24,%al
2: 89 f2 mov %esi,%edx
4: 89 fe mov %edi,%esi
6: bf 05 00 00 00 mov $0x5,%edi
b: e9 1a fe ff ff jmpq 0xfffffe2a
10: 66 2e 0f 1f 84 00 00 nopw %cs:0x0(%rax,%rax,1)
17: 00 00 00
1a: 90 nop
1b: 90 nop
1c: 90 nop
1d: 90 nop
1e: 90 nop
1f: 90 nop
20: 90 nop
21: 90 nop
22: 90 nop
23: 90 nop
24: 90 nop
25: 90 nop
26: 90 nop
27: 90 nop
28: 90 nop
29: 90 nop
* 2a: f3 0f 1e fa endbr64 <-- trapping instruction
2e: 48 8b 0c 24 mov (%rsp),%rcx
32: 48 89 f2 mov %rsi,%rdx
35: 48 89 fe mov %rdi,%rsi
38: bf 07 00 00 00 mov $0x7,%edi
3d: e9 .byte 0xe9
3e: e8 .byte 0xe8
3f: fd std