RBP: 00007f764cfb81d0 R08: 0000000020000100 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
R13: 00007ffce39b627f R14: 00007f764cfb8300 R15: 0000000000022000
------------[ cut here ]------------
WARNING: kernel/printk/printk_ringbuffer.c:1278 at get_data+0x364/0x400, CPU#1: syz-executor.2/10184
Modules linked in:
CPU: 1 UID: 0 PID: 10184 Comm: syz-executor.2 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: 0000000000010000 RBX: ffff88806cf087d0 RCX: ffffffff81558b86
RDX: ffff88801b68d340 RSI: ffffffff81558d53 RDI: 0000000000000006
RBP: ffff88806cf08798 R08: 0000000000000feb R09: 00000149c56f40b2
R10: 0000000000000000 R11: 000027c882000069 R12: ffffffff85d2e130
R13: 00003fffffffffff R14: 0000000000000000 R15: 0000000000000000
FS: 00007f764cfb8700(0000) GS:ffff8880e54a8000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f764cfb7f78 CR3: 0000000018d88000 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:dump_stack_lvl+0x115/0x120
Code: fc ff ff 4c 89 e2 31 f6 31 ff e8 f6 25 70 fc e8 31 52 9a fc 48 89 ee 31 ff e8 87 5c ba fc e8 22 61 ba fc e8 cd cb c2 fc fb 5b <5d> 41 5c e9 13 61 ba fc 0f 1f 00 90 90 90 90 90 90 90 90 90 90 90
RSP: 0018:ffff88804c767d70 EFLAGS: 00000206
RAX: 00000000000000f5 RBX: ffffffff8609df40 RCX: ffffffff817ce8e6
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff84ba1e03
RBP: 0000000000000200 R08: 0000000000000001 R09: 0000000000000001
R10: ffffffff86647f57 R11: 0000000000000001 R12: ffffffff8551ffe0
R13: ffffffff8609df50 R14: 0000000000000000 R15: 0000000000000000
should_fail_ex+0x4d7/0x5e0
_copy_from_user+0x30/0xd0
get_timespec64+0x78/0x190
__x64_sys_mq_timedsend+0x13b/0x250
do_syscall_64+0xbf/0x3f0
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f764fa42b19
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:00007f764cfb8188 EFLAGS: 00000246 ORIG_RAX: 00000000000000f2
RAX: ffffffffffffffda RBX: 00007f764fb55f60 RCX: 00007f764fa42b19
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000003
RBP: 00007f764cfb81d0 R08: 0000000020000100 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
R13: 00007ffce39b627f R14: 00007f764cfb8300 R15: 0000000000022000
irq event stamp: 248
hardirqs last enabled at (247): [] irqentry_exit+0x3b/0x90
hardirqs last disabled at (248): [] sysvec_apic_timer_interrupt+0xf/0x80
softirqs last enabled at (240): [] handle_softirqs+0x50c/0x770
softirqs last disabled at (231): [] __irq_exit_rcu+0xc4/0x100
---[ end trace 0000000000000000 ]---
EXT4-fs (loop5): unsupported inode size: 44130
EXT4-fs (loop5): blocksize: 2048
loop5: detected capacity change from 0 to 196864
EXT4-fs (loop5): unsupported inode size: 44130
EXT4-fs (loop5): blocksize: 2048
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
CPU: 0 UID: 0 PID: 10189 Comm: syz-executor.2 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
__kmalloc_node_noprof+0xc8/0x690
load_msg+0x47/0x490
do_mq_timedsend+0x3a4/0xbe0
__x64_sys_mq_timedsend+0x1bd/0x250
do_syscall_64+0xbf/0x3f0
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f764fa42b19
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:00007f764cfb8188 EFLAGS: 00000246 ORIG_RAX: 00000000000000f2
RAX: ffffffffffffffda RBX: 00007f764fb55f60 RCX: 00007f764fa42b19
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000003
RBP: 00007f764cfb81d0 R08: 0000000020000100 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
R13: 00007ffce39b627f R14: 00007f764cfb8300 R15: 0000000000022000
loop5: detected capacity change from 0 to 229376
EXT4-fs (loop5): unsupported inode size: 44130
EXT4-fs (loop5): blocksize: 2048
FAULT_INJECTION: forcing a failure.
name fail_usercopy, interval 1, probability 0, space 0, times 0
CPU: 1 UID: 0 PID: 10214 Comm: syz-executor.2 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
_copy_from_user+0x30/0xd0
load_msg+0x1b0/0x490
do_mq_timedsend+0x3a4/0xbe0
__x64_sys_mq_timedsend+0x1bd/0x250
do_syscall_64+0xbf/0x3f0
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f764fa42b19
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:00007f764cfb8188 EFLAGS: 00000246 ORIG_RAX: 00000000000000f2
RAX: ffffffffffffffda RBX: 00007f764fb55f60 RCX: 00007f764fa42b19
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000003
RBP: 00007f764cfb81d0 R08: 0000000020000100 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
R13: 00007ffce39b627f R14: 00007f764cfb8300 R15: 0000000000022000
loop5: detected capacity change from 0 to 229632
EXT4-fs (loop5): unsupported inode size: 44130
EXT4-fs (loop5): blocksize: 2048
loop5: detected capacity change from 0 to 229632
EXT4-fs (loop5): unsupported inode size: 44130
EXT4-fs (loop5): blocksize: 2048
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
CPU: 0 UID: 0 PID: 10232 Comm: syz-executor.2 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
__kmalloc_noprof+0xcd/0x680
security_msg_msg_alloc+0xdd/0x130
load_msg+0x34e/0x490
do_mq_timedsend+0x3a4/0xbe0
__x64_sys_mq_timedsend+0x1bd/0x250
do_syscall_64+0xbf/0x3f0
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f764fa42b19
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:00007f764cfb8188 EFLAGS: 00000246 ORIG_RAX: 00000000000000f2
RAX: ffffffffffffffda RBX: 00007f764fb55f60 RCX: 00007f764fa42b19
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000003
RBP: 00007f764cfb81d0 R08: 0000000020000100 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
R13: 00007ffce39b627f R14: 00007f764cfb8300 R15: 0000000000022000
loop5: detected capacity change from 0 to 262144
EXT4-fs (loop5): unsupported inode size: 44130
EXT4-fs (loop5): blocksize: 2048
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
CPU: 0 UID: 0 PID: 10241 Comm: syz-executor.1 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
mas_preallocate+0x86c/0xaa0
commit_merge+0x258/0xe60
vma_modify+0xe44/0x2030
vma_modify_flags+0x1b0/0x250
mlock_fixup+0x1b5/0xda0
apply_vma_lock_flags+0x248/0x370
do_mlock+0x2a5/0x800
__x64_sys_mlock2+0xc1/0x100
do_syscall_64+0xbf/0x3f0
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fb1bc2d5b19
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:00007fb1b984b188 EFLAGS: 00000246 ORIG_RAX: 0000000000000145
RAX: ffffffffffffffda RBX: 00007fb1bc3e8f60 RCX: 00007fb1bc2d5b19
RDX: 0000000000000000 RSI: 0000000000004000 RDI: 0000000020ffc000
RBP: 00007fb1b984b1d0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
R13: 00007fff9bb9c40f R14: 00007fb1b984b300 R15: 0000000000022000
----------------
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 f6 25 70 fc callq 0xfc702603
d: e8 31 52 9a fc callq 0xfc9a5243
12: 48 89 ee mov %rbp,%rsi
15: 31 ff xor %edi,%edi
17: e8 87 5c ba fc callq 0xfcba5ca3
1c: e8 22 61 ba fc callq 0xfcba6143
21: e8 cd cb c2 fc callq 0xfcc2cbf3
26: fb sti
27: 5b pop %rbx
* 28: 5d pop %rbp <-- trapping instruction
29: 41 5c pop %r12
2b: e9 13 61 ba fc jmpq 0xfcba6143
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