RBP: 00007fde298b51d0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002
R13: 00007fff2e94d3ff R14: 00007fde298b5300 R15: 0000000000022000
------------[ cut here ]------------
WARNING: kernel/printk/printk_ringbuffer.c:1278 at get_data+0x364/0x400, CPU#0: syz-executor.0/8837
Modules linked in:
CPU: 0 UID: 0 PID: 8837 Comm: syz-executor.0 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:ffff88806ce08720 EFLAGS: 00010046
RAX: 0000000000010000 RBX: ffff88806ce08838 RCX: ffffffff815559d6
RDX: ffff88804c950000 RSI: ffffffff81555ba3 RDI: 0000000000000006
RBP: ffff88806ce08800 R08: 000000000000101c R09: 000000d158a57149
R10: 0000000000000000 R11: 0000228582000020 R12: ffffffff85d30790
R13: 00003fffffffffff R14: 0000000000000000 R15: 0000000000000000
FS: 00007fde298b5700(0000) GS:ffff8880e53ed000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f2177d35f78 CR3: 000000004e686000 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+0x414/0x6d0
__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 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:ffff888053df71b0 EFLAGS: 00000206
RAX: 0000000000000b47 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
__kmalloc_cache_noprof+0x81/0x6b0
alloc_netdev_mqs+0xbe5/0x1360
ieee802154_if_add+0xcf/0x1140
ieee802154_add_iface_deprecated+0x42/0x60
ieee802154_add_iface+0x472/0x970
genl_family_rcv_msg_doit+0x1fe/0x2f0
genl_rcv_msg+0x532/0x7e0
netlink_rcv_skb+0x147/0x430
genl_rcv+0x28/0x40
netlink_unicast+0x5a7/0x870
netlink_sendmsg+0x8a3/0xd80
____sys_sendmsg+0xa67/0xc20
___sys_sendmsg+0x10f/0x1b0
__sys_sendmsg+0x150/0x200
do_syscall_64+0xbf/0x390
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fde2c33fb19
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:00007fde298b5188 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007fde2c452f60 RCX: 00007fde2c33fb19
RDX: 0000000000000000 RSI: 0000000020000880 RDI: 0000000000000005
RBP: 00007fde298b51d0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002
R13: 00007fff2e94d3ff R14: 00007fde298b5300 R15: 0000000000022000
irq event stamp: 2888
hardirqs last enabled at (2887): [] dump_stack_lvl+0x113/0x120
hardirqs last disabled at (2888): [] sysvec_apic_timer_interrupt+0xf/0x80
softirqs last enabled at (2882): [] handle_softirqs+0x50c/0x770
softirqs last disabled at (2873): [] __irq_exit_rcu+0xc4/0x100
---[ end trace 0000000000000000 ]---
loop2: detected capacity change from 0 to 512
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
CPU: 0 UID: 0 PID: 8844 Comm: syz-executor.1 Tainted: G W 6.18.0-rc3-next-20251031 #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
alloc_empty_file+0x58/0x1e0
path_openat+0xe0/0x2880
do_filp_open+0x1e8/0x450
do_sys_openat2+0x104/0x1b0
__x64_sys_openat+0x142/0x200
do_syscall_64+0xbf/0x390
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f36b78f0a04
Code: 84 00 00 00 00 00 44 89 54 24 0c e8 96 f9 ff ff 44 8b 54 24 0c 44 89 e2 48 89 ee 41 89 c0 bf 9c ff ff ff b8 01 01 00 00 0f 05 <48> 3d 00 f0 ff ff 77 34 44 89 c7 89 44 24 0c e8 c8 f9 ff ff 8b 44
RSP: 002b:00007f36b4eb2ed0 EFLAGS: 00000293 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007f36b7987970 RCX: 00007f36b78f0a04
RDX: 0000000000000002 RSI: 00007f36b4eb3000 RDI: 00000000ffffff9c
RBP: 00007f36b4eb3000 R08: 0000000000000000 R09: ffffffffffffffff
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000002
R13: 0000000000000004 R14: 0000000020000230 R15: 0000000000000002
capability: warning: `syz-executor.6' uses 32-bit capabilities (legacy support in use)
EXT4-fs error (device loop2): __ext4_fill_super:5512: inode #2: comm syz-executor.2: iget: special inode unallocated
loop1: detected capacity change from 0 to 4
EXT4-fs (loop2): get root inode failed
EXT4-fs (loop2): mount failed
EXT4-fs (loop1): Number of reserved GDT blocks insanely large: 3162
loop2: detected capacity change from 0 to 512
EXT4-fs error (device loop2): __ext4_fill_super:5512: inode #2: comm syz-executor.2: iget: special inode unallocated
EXT4-fs (loop2): get root inode failed
EXT4-fs (loop2): mount failed
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
CPU: 0 UID: 0 PID: 8924 Comm: syz-executor.1 Tainted: G W 6.18.0-rc3-next-20251031 #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
security_file_alloc+0x35/0x130
init_file+0x95/0x4c0
alloc_empty_file+0x76/0x1e0
path_openat+0xe0/0x2880
do_filp_open+0x1e8/0x450
do_sys_openat2+0x104/0x1b0
__x64_sys_openat+0x142/0x200
do_syscall_64+0xbf/0x390
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f36b78f0a04
Code: 84 00 00 00 00 00 44 89 54 24 0c e8 96 f9 ff ff 44 8b 54 24 0c 44 89 e2 48 89 ee 41 89 c0 bf 9c ff ff ff b8 01 01 00 00 0f 05 <48> 3d 00 f0 ff ff 77 34 44 89 c7 89 44 24 0c e8 c8 f9 ff ff 8b 44
RSP: 002b:00007f36b4eb2ed0 EFLAGS: 00000293 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007f36b7987970 RCX: 00007f36b78f0a04
RDX: 0000000000000002 RSI: 00007f36b4eb3000 RDI: 00000000ffffff9c
RBP: 00007f36b4eb3000 R08: 0000000000000000 R09: ffffffffffffffff
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000002
R13: 0000000000000004 R14: 0000000020000230 R15: 0000000000000002
netlink: 40 bytes leftover after parsing attributes in process `syz-executor.7'.
netlink: 40 bytes leftover after parsing attributes in process `syz-executor.7'.
loop2: detected capacity change from 0 to 512
loop1: detected capacity change from 0 to 4
EXT4-fs error (device loop2): __ext4_fill_super:5512: inode #2: comm syz-executor.2: iget: special inode unallocated
EXT4-fs (loop2): get root inode failed
EXT4-fs (loop2): mount failed
EXT4-fs (loop1): Number of reserved GDT blocks insanely large: 3162
loop7: detected capacity change from 0 to 16362
loop7: detected capacity change from 0 to 16362
loop2: detected capacity change from 0 to 512
EXT4-fs error (device loop2): __ext4_fill_super:5512: inode #2: comm syz-executor.2: iget: special inode unallocated
EXT4-fs (loop2): get root inode failed
EXT4-fs (loop2): mount failed
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
CPU: 1 UID: 0 PID: 9012 Comm: syz-executor.1 Tainted: G W 6.18.0-rc3-next-20251031 #1 PREEMPT(voluntary)
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
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/0x390
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f36b793d8d7
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:00007f36b4eb2f48 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f36b7987970 RCX: 00007f36b793d8d7
RDX: 0000000000000004 RSI: 0000000000004c00 RDI: 0000000000000005
RBP: 0000000000000005 R08: 0000000000000000 R09: ffffffffffffffff
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004
R13: 0000000000000004 R14: 0000000020000230 R15: 0000000000000002
loop1: detected capacity change from 0 to 4
CPU: 0 UID: 0 PID: 9011 Comm: syz-executor.0 Tainted: G W 6.18.0-rc3-next-20251031 #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_cache_noprof+0x81/0x6b0
alloc_netdev_mqs+0xc53/0x1360
ieee802154_if_add+0xcf/0x1140
ieee802154_add_iface_deprecated+0x42/0x60
ieee802154_add_iface+0x472/0x970
genl_family_rcv_msg_doit+0x1fe/0x2f0
genl_rcv_msg+0x532/0x7e0
netlink_rcv_skb+0x147/0x430
genl_rcv+0x28/0x40
netlink_unicast+0x5a7/0x870
netlink_sendmsg+0x8a3/0xd80
____sys_sendmsg+0xa67/0xc20
___sys_sendmsg+0x10f/0x1b0
__sys_sendmsg+0x150/0x200
do_syscall_64+0xbf/0x390
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fde2c33fb19
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:00007fde298b5188 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007fde2c452f60 RCX: 00007fde2c33fb19
RDX: 0000000000000000 RSI: 0000000020000880 RDI: 0000000000000005
RBP: 00007fde298b51d0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002
R13: 00007fff2e94d3ff R14: 00007fde298b5300 R15: 0000000000022000
loop2: detected capacity change from 0 to 512
EXT4-fs error (device loop2): __ext4_fill_super:5512: inode #2: comm syz-executor.2: iget: special inode unallocated
EXT4-fs (loop2): get root inode failed
EXT4-fs (loop2): mount failed
loop7: detected capacity change from 0 to 274
EXT4-fs (loop1): Number of reserved GDT blocks insanely large: 3162
----------------
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