watchdog: BUG: soft lockup - CPU#1 stuck for 122s! [syz.0.66:6158]
Modules linked in:
irq event stamp: 13424105
hardirqs last enabled at (13424104): [<ffffffff8b5533c4>] irqentry_exit+0x74/0x90 kernel/entry/common.c:357
hardirqs last disabled at (13424105): [<ffffffff8b551dbe>] sysvec_apic_timer_interrupt+0xe/0xc0 arch/x86/kernel/apic/apic.c:1049
softirqs last enabled at (13423958): [<ffffffff8185c3da>] __do_softirq kernel/softirq.c:613 [inline]
softirqs last enabled at (13423958): [<ffffffff8185c3da>] invoke_softirq kernel/softirq.c:453 [inline]
softirqs last enabled at (13423958): [<ffffffff8185c3da>] __irq_exit_rcu+0xca/0x1f0 kernel/softirq.c:680
softirqs last disabled at (13423961): [<ffffffff8185c3da>] __do_softirq kernel/softirq.c:613 [inline]
softirqs last disabled at (13423961): [<ffffffff8185c3da>] invoke_softirq kernel/softirq.c:453 [inline]
softirqs last disabled at (13423961): [<ffffffff8185c3da>] __irq_exit_rcu+0xca/0x1f0 kernel/softirq.c:680
CPU: 1 UID: 0 PID: 6158 Comm: syz.0.66 Not tainted 6.15.0-rc3-syzkaller-g46eb012611f7 #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/19/2025
RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline]
RIP: 0010:_raw_spin_unlock_irqrestore+0xa8/0x110 kernel/locking/spinlock.c:194
Code: 74 05 e8 3b 90 6f f6 48 c7 44 24 20 00 00 00 00 9c 8f 44 24 20 f6 44 24 21 02 75 4f f7 c3 00 02 00 00 74 01 fb bf 01 00 00 00 <e8> 53 13 39 f6 65 8b 05 5c 55 1d 07 85 c0 74 40 48 c7 04 24 0e 36
RSP: 0018:ffffc90000a08aa0 EFLAGS: 00000206
RAX: 05880023475dd900 RBX: 0000000000000a02 RCX: 05880023475dd900
RDX: 0000000000000002 RSI: ffffffff8d747e1c RDI: 0000000000000001
RBP: ffffc90000a08b20 R08: ffffffff8f7ebb77 R09: 1ffffffff1efd76e
R10: dffffc0000000000 R11: fffffbfff1efd76f R12: dffffc0000000000
R13: ffff8880611ca010 R14: ffff8880611ca0b8 R15: 1ffff92000141154
FS: 00007f8182fe76c0(0000) GS:ffff8881261d0000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00005555659a5588 CR3: 0000000026e84000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
<IRQ>
spin_unlock_irqrestore include/linux/spinlock.h:406 [inline]
skb_dequeue+0x10e/0x150 net/core/skbuff.c:3868
garp_queue_xmit net/802/garp.c:272 [inline]
garp_join_timer+0x8e/0x120 net/802/garp.c:424
call_timer_fn+0x17b/0x5f0 kernel/time/timer.c:1789
expire_timers kernel/time/timer.c:1840 [inline]
__run_timers kernel/time/timer.c:2414 [inline]
__run_timer_base+0x61a/0x860 kernel/time/timer.c:2426
run_timer_base kernel/time/timer.c:2435 [inline]
run_timer_softirq+0xb7/0x180 kernel/time/timer.c:2445
handle_softirqs+0x283/0x870 kernel/softirq.c:579
__do_softirq kernel/softirq.c:613 [inline]
invoke_softirq kernel/softirq.c:453 [inline]
__irq_exit_rcu+0xca/0x1f0 kernel/softirq.c:680
irq_exit_rcu+0x9/0x30 kernel/softirq.c:696
instr_sysvec_irq_work arch/x86/kernel/irq_work.c:17 [inline]
sysvec_irq_work+0xa3/0xc0 arch/x86/kernel/irq_work.c:17
</IRQ>
<TASK>
asm_sysvec_irq_work+0x1a/0x20 arch/x86/include/asm/idtentry.h:738
RIP: 0010:__schedule+0x4/0x4cd0 kernel/sched/core.c:6646
Code: f8 89 d9 48 8b 5c 24 08 e9 ee fe ff ff cc cc cc cc cc cc cc cc cc 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa <55> 48 89 e5 41 57 41 56 41 55 41 54 53 48 83 e4 e0 48 81 ec e0 01
RSP: 0018:ffffc9000bbf7998 EFLAGS: 00000286
RAX: 05880023475dd900 RBX: 0000000000000000 RCX: 05880023475dd900
RDX: 0000000000000007 RSI: ffffffff8d747e1c RDI: 0000000000000001
RBP: ffffc9000bbf7a50 R08: ffffffff8f7ebb77 R09: 1ffffffff1efd76e
R10: dffffc0000000000 R11: fffffbfff1efd76f R12: 0000000000000000
R13: 0000000000000000 R14: dffffc0000000000 R15: 1ffff9200177ef34
preempt_schedule_irq+0xb5/0x150 kernel/sched/core.c:7090
irqentry_exit+0x6f/0x90 kernel/entry/common.c:354
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:put_cpu_partial+0x1b4/0x250 mm/slub.c:3273
Code: 85 b5 00 00 00 48 83 c4 20 5b 41 5c 41 5d 41 5e 41 5f 5d c3 cc cc cc cc cc e8 98 8f 3d 09 f7 c5 00 02 00 00 74 bc fb 4d 85 e4 <75> bb eb c4 90 e8 32 fb 9c 02 85 c0 74 22 83 3d 3b 52 67 0d 00 75
RSP: 0018:ffffc9000bbf7b18 EFLAGS: 00000246
RAX: 05880023475dd900 RBX: ffff888141ede8c0 RCX: 05880023475dd900
RDX: 0000000000000007 RSI: ffffffff8d747e1c RDI: ffffffff8bc1c7a0
RBP: 0000000000000286 R08: ffffffff8f7ebb77 R09: 1ffffffff1efd76e
R10: dffffc0000000000 R11: fffffbfff1efd76f R12: 0000000000000000
R13: 0000000000000001 R14: ffff88802c4fbc00 R15: ffff8880b8941990
__slab_free+0x2f7/0x400 mm/slub.c:4526
qlink_free mm/kasan/quarantine.c:163 [inline]
qlist_free_all+0x9a/0x140 mm/kasan/quarantine.c:179
kasan_quarantine_reduce+0x148/0x160 mm/kasan/quarantine.c:286
__kasan_slab_alloc+0x22/0x80 mm/kasan/common.c:329
kasan_slab_alloc include/linux/kasan.h:250 [inline]
slab_post_alloc_hook mm/slub.c:4161 [inline]
slab_alloc_node mm/slub.c:4210 [inline]
kmem_cache_alloc_lru_noprof+0x1c6/0x3d0 mm/slub.c:4229
__d_alloc+0x31/0x6f0 fs/dcache.c:1681
d_alloc_pseudo+0x1f/0xb0 fs/dcache.c:1812
alloc_path_pseudo fs/file_table.c:360 [inline]
alloc_file_pseudo+0xcc/0x210 fs/file_table.c:376
sock_alloc_file+0xb8/0x2e0 net/socket.c:470
sock_map_fd net/socket.c:500 [inline]
__sys_socket+0x13d/0x1b0 net/socket.c:1692
__do_sys_socket net/socket.c:1697 [inline]
__se_sys_socket net/socket.c:1695 [inline]
__x64_sys_socket+0x7a/0x90 net/socket.c:1695
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xf6/0x210 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f818218e969
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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f8182fe7038 EFLAGS: 00000246 ORIG_RAX: 0000000000000029
RAX: ffffffffffffffda RBX: 00007f81823b5fa0 RCX: 00007f818218e969
RDX: 0000000000000021 RSI: 0000000000000002 RDI: 0000000000000022
RBP: 00007f8182210ab1 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f81823b5fa0 R15: 00007ffff6f62668
</TASK>
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 81 Comm: kworker/u8:5 Not tainted 6.15.0-rc3-syzkaller-g46eb012611f7 #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/19/2025
Workqueue: events_unbound toggle_allocation_gate
RIP: 0010:csd_lock_wait kernel/smp.c:340 [inline]
RIP: 0010:smp_call_function_many_cond+0xe69/0x11c0 kernel/smp.c:885
Code: 00 45 8b 2f 44 89 ee 83 e6 01 31 ff e8 20 6d 0b 00 41 83 e5 01 49 bd 00 00 00 00 00 fc ff df 75 07 e8 cb 68 0b 00 eb 37 f3 90 <43> 0f b6 04 2c 84 c0 75 10 41 f7 07 01 00 00 00 74 1e e8 b0 68 0b
RSP: 0018:ffffc900015e7700 EFLAGS: 00000293
RAX: ffffffff81b454d0 RBX: ffff8880b883ad40 RCX: ffff88801c76bc00
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffffc900015e7860 R08: ffffffff8f7ebb77 R09: 1ffffffff1efd76e
R10: dffffc0000000000 R11: fffffbfff1efd76f R12: 1ffff11017127e99
R13: dffffc0000000000 R14: 0000000000000001 R15: ffff8880b893f4c8
FS: 0000000000000000(0000) GS:ffff8881260d0000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fff0a9f2fc8 CR3: 000000000dd36000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
<TASK>
on_each_cpu_cond_mask+0x3f/0x80 kernel/smp.c:1052
on_each_cpu include/linux/smp.h:71 [inline]
text_poke_sync arch/x86/kernel/alternative.c:2455 [inline]
text_poke_bp_batch+0x319/0x940 arch/x86/kernel/alternative.c:2665
text_poke_flush arch/x86/kernel/alternative.c:2856 [inline]
text_poke_finish+0x30/0x50 arch/x86/kernel/alternative.c:2863
arch_jump_label_transform_apply+0x1c/0x30 arch/x86/kernel/jump_label.c:146
static_key_enable_cpuslocked+0x128/0x250 kernel/jump_label.c:210
static_key_enable+0x1a/0x20 kernel/jump_label.c:223
toggle_allocation_gate+0xad/0x240 mm/kfence/core.c:850
process_one_work kernel/workqueue.c:3238 [inline]
process_scheduled_works+0xadb/0x17a0 kernel/workqueue.c:3319
worker_thread+0x8a0/0xda0 kernel/workqueue.c:3400
kthread+0x70e/0x8a0 kernel/kthread.c:464
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:153
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
</TASK>