RBP: 00007f6904a711d0 R08: 00000000ff030000 R09: 0000000000000024
R10: 0000000000400600 R11: 0000000000000246 R12: 0000000000000002
R13: 00007ffd442046bf R14: 00007f6904a71300 R15: 0000000000022000
------------[ cut here ]------------
WARNING: kernel/printk/printk_ringbuffer.c:1278 at get_data+0x364/0x400, CPU#0: syz-executor.1/9132
Modules linked in:
CPU: 0 UID: 0 PID: 9132 Comm: syz-executor.1 Not tainted 6.18.0-rc4-next-20251110 #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 77 87 5c 00 e9 a9 fe ff ff e8 7d 03 1f 00 90 <0f> 0b 90 45 31 e4 e9 3b ff ff ff e8 6c 03 1f 00 90 0f 0b 90 45 31
RSP: 0018:ffff88806ce086b8 EFLAGS: 00010046
RAX: 0000000000010000 RBX: ffff88806ce087d0 RCX: ffffffff8155a4a6
RDX: ffff8880172dd340 RSI: ffffffff8155a673 RDI: 0000000000000006
RBP: ffff88806ce08798 R08: 000000000000102e R09: 000001308ca447a2
R10: 0000000000000000 R11: 000023ac82000026 R12: ffffffff85d30710
R13: 00003fffffffffff R14: 0000000000000000 R15: 0000000000000000
FS: 00007f6904a71700(0000) GS:ffff8880e539c000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055558b7c8c58 CR3: 000000001e0bf000 CR4: 0000000000350ef0
Call Trace:
_prb_read_valid+0x2f3/0x830
prb_read_valid+0x78/0xa0
printk_get_next_message+0x10b/0x570
console_flush_one_record+0x673/0xb70
__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/0xab0
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 36 23 6e fc e8 41 65 98 fc 48 89 ee 31 ff e8 87 83 b8 fc e8 22 88 b8 fc e8 1d f0 c0 fc fb 5b <5d> 41 5c e9 13 88 b8 fc 0f 1f 00 90 90 90 90 90 90 90 90 90 90 90
RSP: 0018:ffff88800d00efd0 EFLAGS: 00000202
RAX: 0000000000000229 RBX: ffffffff85f04a00 RCX: 0000000000000040
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff84bc21d3
RBP: 0000000000000200 R08: 0000000000000001 R09: 0000000000000001
R10: ffffffff8664c157 R11: 0000000000000001 R12: ffffffff85520f40
R13: ffffffff85f04a10 R14: 0000000000000000 R15: 0000000000000000
should_fail_ex+0x4d7/0x5e0
should_failslab+0xc2/0x120
kmem_cache_alloc_noprof+0x80/0x690
jbd2_journal_add_journal_head+0x367/0x5d0
jbd2_journal_get_create_access+0x44/0x560
__ext4_journal_get_create_access+0x54/0x1b0
ext4_ind_map_blocks+0xc27/0x2330
ext4_map_blocks+0xaf1/0x1510
ext4_iomap_begin+0xa5e/0xe80
iomap_iter+0x55a/0x1020
__iomap_dio_rw+0x6dd/0x1c90
iomap_dio_rw+0x40/0xa0
ext4_file_write_iter+0xe0e/0x19f0
do_iter_readv_writev+0x5b3/0x910
vfs_writev+0x2d4/0xcd0
do_pwritev+0x1ab/0x280
__x64_sys_pwritev2+0xef/0x160
do_syscall_64+0xbf/0x430
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f69074fbb19
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:00007f6904a71188 EFLAGS: 00000246 ORIG_RAX: 0000000000000148
RAX: ffffffffffffffda RBX: 00007f690760ef60 RCX: 00007f69074fbb19
RDX: 0000000000000006 RSI: 00000000200002c0 RDI: 0000000000000003
RBP: 00007f6904a711d0 R08: 00000000ff030000 R09: 0000000000000024
R10: 0000000000400600 R11: 0000000000000246 R12: 0000000000000002
R13: 00007ffd442046bf R14: 00007f6904a71300 R15: 0000000000022000
irq event stamp: 554
hardirqs last enabled at (553): [] dump_stack_lvl+0x113/0x120
hardirqs last disabled at (554): [] sysvec_apic_timer_interrupt+0xf/0x80
softirqs last enabled at (548): [] handle_softirqs+0x50c/0x770
softirqs last disabled at (513): [] __irq_exit_rcu+0xc4/0x100
---[ end trace 0000000000000000 ]---
ENOMEM in journal_alloc_journal_head, retrying.
FAT-fs (loop4): unable to read boot sector
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
CPU: 1 UID: 0 PID: 9146 Comm: syz-executor.5 Tainted: G W 6.18.0-rc4-next-20251110 #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
__kernfs_new_node+0xd3/0x870
kernfs_new_node+0x13c/0x1e0
kernfs_create_dir_ns+0x4d/0x1a0
internal_create_group+0xa7f/0xeb0
loop_configure+0xc46/0x15a0
lo_ioctl+0x66d/0x1ca0
blkdev_ioctl+0x365/0x6d0
__x64_sys_ioctl+0x18f/0x210
do_syscall_64+0xbf/0x430
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f45358978d7
Code: 3c 1c 48 f7 d8 49 39 c4 72 b8 e8 a4 54 02 00 85 c0 78 bd 48 83 c4 08 4c 89 e0 5b 41 5c c3 0f 1f 44 00 00 b8 10 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:00007f4532e0cf48 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f45358e1970 RCX: 00007f45358978d7
RDX: 0000000000000005 RSI: 0000000000004c00 RDI: 0000000000000006
RBP: 0000000000000006 R08: 0000000000000000 R09: ffffffffffffffff
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000005
R13: 0000000000000005 R14: 0000000020000200 R15: 0000000000000000
FAT-fs (loop4): unable to read boot sector
FAT-fs (loop5): unable to read boot sector
FAT-fs (loop4): unable to read boot sector
FAT-fs (loop5): unable to read boot sector
loop2: detected capacity change from 0 to 8
iso9660: Unknown parameter 'dont_hash'
loop2: detected capacity change from 0 to 8
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
CPU: 1 UID: 0 PID: 9180 Comm: syz-executor.4 Tainted: G W 6.18.0-rc4-next-20251110 #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
__kernfs_new_node+0xd3/0x870
kernfs_new_node+0x13c/0x1e0
__kernfs_create_file+0x55/0x360
sysfs_add_file_mode_ns+0x21c/0x440
internal_create_group+0x571/0xeb0
loop_configure+0xc46/0x15a0
lo_ioctl+0x66d/0x1ca0
blkdev_ioctl+0x365/0x6d0
__x64_sys_ioctl+0x18f/0x210
do_syscall_64+0xbf/0x430
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f09ebd5f8d7
Code: 3c 1c 48 f7 d8 49 39 c4 72 b8 e8 a4 54 02 00 85 c0 78 bd 48 83 c4 08 4c 89 e0 5b 41 5c c3 0f 1f 44 00 00 b8 10 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:00007f09e92d4f48 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f09ebda9970 RCX: 00007f09ebd5f8d7
RDX: 0000000000000005 RSI: 0000000000004c00 RDI: 0000000000000006
RBP: 0000000000000006 R08: 0000000000000000 R09: ffffffffffffffff
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000005
R13: 0000000000000005 R14: 0000000020000218 R15: 0000000000000001
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
CPU: 0 UID: 0 PID: 9183 Comm: syz-executor.5 Tainted: G W 6.18.0-rc4-next-20251110 #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
__kernfs_new_node+0xd3/0x870
kernfs_new_node+0x13c/0x1e0
__kernfs_create_file+0x55/0x360
sysfs_add_file_mode_ns+0x21c/0x440
internal_create_group+0x571/0xeb0
loop_configure+0xc46/0x15a0
----------------
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 36 23 6e fc callq 0xfc6e2343
d: e8 41 65 98 fc callq 0xfc986553
12: 48 89 ee mov %rbp,%rsi
15: 31 ff xor %edi,%edi
17: e8 87 83 b8 fc callq 0xfcb883a3
1c: e8 22 88 b8 fc callq 0xfcb88843
21: e8 1d f0 c0 fc callq 0xfcc0f043
26: fb sti
27: 5b pop %rbx
* 28: 5d pop %rbp <-- trapping instruction
29: 41 5c pop %r12
2b: e9 13 88 b8 fc jmpq 0xfcb88843
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