------------[ cut here ]------------
DEBUG_LOCKS_WARN_ON(1)
WARNING: CPU: 0 PID: 8769 at kernel/locking/lockdep.c:231 hlock_class kernel/locking/lockdep.c:231 [inline]
WARNING: CPU: 0 PID: 8769 at kernel/locking/lockdep.c:231 check_wait_context kernel/locking/lockdep.c:4772 [inline]
WARNING: CPU: 0 PID: 8769 at kernel/locking/lockdep.c:231 __lock_acquire+0x58c/0x2040 kernel/locking/lockdep.c:5092
Modules linked in:
CPU: 0 UID: 0 PID: 8769 Comm: syz-executor Not tainted 6.11.0-rc1-syzkaller-00233-g948752d2e010 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024
RIP: 0010:hlock_class kernel/locking/lockdep.c:231 [inline]
RIP: 0010:check_wait_context kernel/locking/lockdep.c:4772 [inline]
RIP: 0010:__lock_acquire+0x58c/0x2040 kernel/locking/lockdep.c:5092
Code: 00 00 83 3d 85 26 a8 0e 00 75 23 90 48 c7 c7 80 d3 0a 8c 48 c7 c6 20 d6 0a 8c e8 bf d9 e5 ff 48 ba 00 00 00 00 00 fc ff df 90 <0f> 0b 90 90 90 31 db 48 81 c3 c4 00 00 00 48 89 d8 48 c1 e8 03 0f
RSP: 0018:ffffc900000079d0 EFLAGS: 00010046
RAX: 7e3d0c3035268400 RBX: 0000000000001c20 RCX: ffff888062afda00
RDX: dffffc0000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 000000000000000a R08: ffffffff815592f2 R09: 1ffff1101724519a
R10: dffffc0000000000 R11: ffffed101724519b R12: ffff888062afda00
R13: 0000000000001c20 R14: 1ffff1100c55fcaa R15: ffff888062afe550
FS: 0000555583b8e500(0000) GS:ffff8880b9200000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007efc824f6d58 CR3: 0000000051f6e000 CR4: 0000000000350ef0
Call Trace:
lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5759
_raw_spin_lock_nested+0x31/0x40 kernel/locking/spinlock.c:378
raw_spin_rq_lock_nested+0xb0/0x140 kernel/sched/core.c:568
raw_spin_rq_lock kernel/sched/sched.h:1415 [inline]
rq_lock kernel/sched/sched.h:1714 [inline]
sched_tick+0x72/0x610 kernel/sched/core.c:5458
update_process_times+0x202/0x230 kernel/time/timer.c:2490
tick_sched_handle kernel/time/tick-sched.c:276 [inline]
tick_nohz_handler+0x37c/0x500 kernel/time/tick-sched.c:297
__run_hrtimer kernel/time/hrtimer.c:1689 [inline]
__hrtimer_run_queues+0x553/0xd50 kernel/time/hrtimer.c:1753
hrtimer_interrupt+0x396/0x990 kernel/time/hrtimer.c:1815
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1032 [inline]
__sysvec_apic_timer_interrupt+0x112/0x3f0 arch/x86/kernel/apic/apic.c:1049
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1043 [inline]
sysvec_apic_timer_interrupt+0xa1/0xc0 arch/x86/kernel/apic/apic.c:1043
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:finish_task_switch+0x1ea/0x870 kernel/sched/core.c:5062
Code: c9 50 e8 19 b6 0b 00 48 83 c4 08 4c 89 f7 e8 7d 38 00 00 e9 de 04 00 00 4c 89 f7 e8 60 b9 5b 0a e8 8b d6 36 00 fb 48 8b 5d c0 <48> 8d bb f8 15 00 00 48 89 f8 48 c1 e8 03 49 be 00 00 00 00 00 fc
RSP: 0018:ffffc900040b7148 EFLAGS: 00000286
RAX: 7e3d0c3035268400 RBX: ffff888062afda00 RCX: ffffffff81701e2a
RDX: dffffc0000000000 RSI: ffffffff8c0ad4e0 RDI: ffffffff8c605b80
RBP: ffffc900040b7190 R08: ffffffff9372a80f R09: 1ffffffff26e5501
R10: dffffc0000000000 R11: fffffbfff26e5502 R12: 1ffff11017247ef3
R13: dffffc0000000000 R14: ffff8880b923ea00 R15: ffff8880b923f798
context_switch kernel/sched/core.c:5191 [inline]
__schedule+0x1808/0x4a60 kernel/sched/core.c:6529
preempt_schedule_irq+0xfb/0x1c0 kernel/sched/core.c:6851
irqentry_exit+0x5e/0x90 kernel/entry/common.c:354
asm_sysvec_reschedule_ipi+0x1a/0x20 arch/x86/include/asm/idtentry.h:707
RIP: 0010:preempt_count arch/x86/include/asm/preempt.h:26 [inline]
RIP: 0010:resched_offsets_ok kernel/sched/core.c:8384 [inline]
RIP: 0010:__might_resched+0x130/0x780 kernel/sched/core.c:8401
Code: 0e 00 75 1f c6 05 3b db 9c 0e 01 48 c7 c7 00 5f 0a 8c be cf 20 00 00 48 c7 c2 80 67 0a 8c e8 c7 8b 0b 00 65 8b 1d 88 56 9f 7e <81> e3 ff ff ff 7f 65 48 8b 34 25 40 d7 03 00 4c 8d ae 44 04 00 00
RSP: 0018:ffffc900040b7520 EFLAGS: 00000246
RAX: 0000000000000000 RBX: 0000000080000000 RCX: ffff888062afda00
RDX: 0000000000000000 RSI: ffffffff8c0ae660 RDI: ffffffff8c605b80
RBP: ffffc900040b7638 R08: ffffffff9017acaf R09: 1ffffffff202f595
R10: dffffc0000000000 R11: fffffbfff202f596 R12: 0000000000000000
R13: 0000000002040dc0 R14: 0000000000000151 R15: 1ffff92000816eac
might_alloc include/linux/sched/mm.h:337 [inline]
slab_pre_alloc_hook mm/slub.c:3939 [inline]
slab_alloc_node mm/slub.c:4017 [inline]
__do_kmalloc_node mm/slub.c:4157 [inline]
__kmalloc_node_noprof+0xd0/0x440 mm/slub.c:4164
kmalloc_array_node_noprof include/linux/slab.h:788 [inline]
alloc_slab_obj_exts mm/slub.c:1976 [inline]
account_slab mm/slub.c:2447 [inline]
allocate_slab+0xb6/0x2f0 mm/slub.c:2502
new_slab mm/slub.c:2537 [inline]
___slab_alloc+0xcd1/0x14b0 mm/slub.c:3723
__slab_alloc+0x58/0xa0 mm/slub.c:3813
__slab_alloc_node mm/slub.c:3866 [inline]
slab_alloc_node mm/slub.c:4025 [inline]
__kmalloc_cache_noprof+0x1d5/0x2c0 mm/slub.c:4184
kmalloc_noprof include/linux/slab.h:681 [inline]
kzalloc_noprof include/linux/slab.h:807 [inline]
ipv6_add_dev+0xf4/0x1220 net/ipv6/addrconf.c:384
addrconf_notify+0x6a7/0x1020 net/ipv6/addrconf.c:3653
notifier_call_chain+0x1a1/0x3e0 kernel/notifier.c:93
call_netdevice_notifiers_extack net/core/dev.c:2032 [inline]
call_netdevice_notifiers net/core/dev.c:2046 [inline]
register_netdevice+0x167f/0x1b00 net/core/dev.c:10469
register_netdev+0x3b/0x50 net/core/dev.c:10573
loopback_net_init+0x73/0x150 drivers/net/loopback.c:217
ops_init+0x35b/0x610 net/core/net_namespace.c:139
setup_net+0x515/0xca0 net/core/net_namespace.c:343
copy_net_ns+0x4e2/0x7b0 net/core/net_namespace.c:508
create_new_namespaces+0x425/0x7b0 kernel/nsproxy.c:110
unshare_nsproxy_namespaces+0x124/0x180 kernel/nsproxy.c:228
ksys_unshare+0x619/0xc10 kernel/fork.c:3309
__do_sys_unshare kernel/fork.c:3380 [inline]
__se_sys_unshare kernel/fork.c:3378 [inline]
__x64_sys_unshare+0x38/0x40 kernel/fork.c:3378
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fc756f79157
Code: 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffd1ac39bd8 EFLAGS: 00000202 ORIG_RAX: 0000000000000110
RAX: ffffffffffffffda RBX: 00007fc757105f40 RCX: 00007fc756f79157
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000040000000
RBP: 00007fc757106a38 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000202 R12: 000000000000000c
R13: 0000000000000003 R14: 0000000000000009 R15: 0000000000000009
----------------
Code disassembly (best guess):
0: c9 leave
1: 50 push %rax
2: e8 19 b6 0b 00 call 0xbb620
7: 48 83 c4 08 add $0x8,%rsp
b: 4c 89 f7 mov %r14,%rdi
e: e8 7d 38 00 00 call 0x3890
13: e9 de 04 00 00 jmp 0x4f6
18: 4c 89 f7 mov %r14,%rdi
1b: e8 60 b9 5b 0a call 0xa5bb980
20: e8 8b d6 36 00 call 0x36d6b0
25: fb sti
26: 48 8b 5d c0 mov -0x40(%rbp),%rbx
* 2a: 48 8d bb f8 15 00 00 lea 0x15f8(%rbx),%rdi <-- trapping instruction
31: 48 89 f8 mov %rdi,%rax
34: 48 c1 e8 03 shr $0x3,%rax
38: 49 rex.WB
39: be 00 00 00 00 mov $0x0,%esi
3e: 00 fc add %bh,%ah