watchdog: BUG: soft lockup - CPU#0 stuck for 143s! [kworker/0:21:2392]
Modules linked in:
CPU: 0 PID: 2392 Comm: kworker/0:21 Tainted: G        W         syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/18/2025
Workqueue: events bpf_prog_free_deferred
RIP: 0010:csd_lock_wait kernel/smp.c:440 [inline]
RIP: 0010:smp_call_function_many_cond+0x8c3/0x9f0 kernel/smp.c:969
Code: 84 c0 0f 85 9d 00 00 00 41 8b 1f 89 de 83 e6 01 31 ff e8 90 37 0a 00 83 e3 01 48 8b 5c 24 10 75 07 e8 d1 33 0a 00 eb 42 f3 90 <48> b8 00 00 00 00 00 fc ff df 41 0f b6 44 05 00 84 c0 75 10 41 f7
RSP: 0018:ffffc9000131f880 EFLAGS: 00000293
RAX: ffffffff815e8b65 RBX: ffff8881f7038e80 RCX: ffff888119f28000
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffffc9000131f988 R08: dffffc0000000000 R09: ffffc9000131f7c0
R10: fffff52000263efa R11: 1ffff92000263ef8 R12: 1ffff1103ee071d0
R13: 1ffff1103ee2784d R14: 0000000000000001 R15: ffff8881f713c268
FS:  0000000000000000(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c2a97ea CR3: 000000011cd53000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <TASK>
 on_each_cpu_cond_mask+0x43/0x80 kernel/smp.c:1135
 on_each_cpu include/linux/smp.h:71 [inline]
 flush_tlb_kernel_range+0x43/0x240 arch/x86/mm/tlb.c:1074
 __purge_vmap_area_lazy+0x1ad/0x1840 mm/vmalloc.c:1702
 _vm_unmap_aliases+0x2fd/0x380 mm/vmalloc.c:2126
 vm_remove_mappings mm/vmalloc.c:2619 [inline]
 __vunmap+0x66e/0x9e0 mm/vmalloc.c:2650
 __vfree mm/vmalloc.c:2709 [inline]
 vfree+0x8b/0xc0 mm/vmalloc.c:2740
 module_memfree+0x17/0x30 kernel/module.c:2150
 bpf_jit_free_exec+0x15/0x20 kernel/bpf/core.c:871
 bpf_jit_binary_free kernel/bpf/core.c:918 [inline]
 bpf_jit_free+0x98/0x240 kernel/bpf/core.c:931
 bpf_prog_free_deferred+0x5c7/0x6d0 kernel/bpf/core.c:2302
 process_one_work+0x6be/0xba0 kernel/workqueue.c:2325
 worker_thread+0xa59/0x1200 kernel/workqueue.c:2472
 kthread+0x411/0x500 kernel/kthread.c:337
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287
 </TASK>
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 4577 Comm: syz.0.1148 Tainted: G        W         syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/18/2025
RIP: 0010:native_halt arch/x86/include/asm/irqflags.h:57 [inline]
RIP: 0010:halt arch/x86/include/asm/irqflags.h:98 [inline]
RIP: 0010:kvm_wait+0xcc/0x140 arch/x86/kernel/kvm.c:912
Code: 20 f6 44 24 21 02 75 24 48 89 f8 48 c1 e8 03 42 0f b6 04 30 84 c0 75 48 0f b6 07 40 38 f0 75 a6 66 90 0f 00 2d 85 91 d6 03 f4 <eb> 9a fa 48 89 f8 48 c1 e8 03 42 0f b6 04 30 84 c0 75 3f 0f b6 07
RSP: 0018:ffffc90000cd7780 EFLAGS: 00000046
RAX: 0000000000000003 RBX: ffff8881002fc42c RCX: ffffffff814f42b9
RDX: 0000000000000001 RSI: 0000000000000003 RDI: ffff8881002fc42c
RBP: ffffc90000cd7810 R08: dffffc0000000000 R09: ffffed102005f886
R10: ffffed102005f886 R11: 1ffff1102005f885 R12: 1ffff1103ee20001
R13: ffff8881f7138ad4 R14: dffffc0000000000 R15: 1ffff9200019aef0
FS:  00007fbd877316c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00002000000029c0 CR3: 000000013a37c000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <TASK>
 pv_wait arch/x86/include/asm/paravirt.h:597 [inline]
 pv_wait_head_or_lock kernel/locking/qspinlock_paravirt.h:470 [inline]
 __pv_queued_spin_lock_slowpath+0x60f/0x9c0 kernel/locking/qspinlock.c:508
 pv_queued_spin_lock_slowpath arch/x86/include/asm/paravirt.h:585 [inline]
 queued_spin_lock_slowpath+0x47/0x50 arch/x86/include/asm/qspinlock.h:51
 queued_spin_lock include/asm-generic/qspinlock.h:85 [inline]
 do_raw_spin_lock include/linux/spinlock.h:187 [inline]
 __raw_spin_lock_irq include/linux/spinlock_api_smp.h:129 [inline]
 _raw_spin_lock_irq+0xd9/0xe0 kernel/locking/spinlock.c:170
 get_wchan kernel/sched/core.c:2021 [inline]
 perf_trace_sched_blocked_reason+0x243/0x4a0 include/trace/events/sched.h:490
 trace_sched_blocked_reason include/trace/events/sched.h:490 [inline]
 try_to_wake_up+0xea1/0x1160 kernel/sched/core.c:4190
 wake_up_process+0x10/0x20 kernel/sched/core.c:4348
 swake_up_locked kernel/sched/swait.c:30 [inline]
 swake_up_one+0x6a/0x150 kernel/sched/swait.c:53
 __rcu_report_exp_rnp+0x1aa/0x1b0 kernel/rcu/tree_exp.h:201
 rcu_report_exp_rnp kernel/rcu/tree_exp.h:223 [inline]
 rcu_preempt_deferred_qs_irqrestore+0x6f3/0x9d0 kernel/rcu/tree_plugin.h:562
 rcu_read_unlock_special+0xab/0x460 kernel/rcu/tree_plugin.h:673
 __rcu_read_unlock+0x5e/0xa0 kernel/rcu/tree_plugin.h:422
 rcu_read_unlock include/linux/rcupdate.h:780 [inline]
 __fget_files+0x2c4/0x320 fs/file.c:903
 __fget fs/file.c:911 [inline]
 __fget_light fs/file.c:1015 [inline]
 __fdget fs/file.c:1023 [inline]
 __fdget_pos+0x196/0x380 fs/file.c:1050
 fdget_pos include/linux/file.h:75 [inline]
 ksys_write+0x78/0x240 fs/read_write.c:638
 __do_sys_write fs/read_write.c:659 [inline]
 __se_sys_write fs/read_write.c:656 [inline]
 __x64_sys_write+0x7b/0x90 fs/read_write.c:656
 x64_sys_call+0x8ef/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:2
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7fbd88cc8ec9
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:00007fbd87731038 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007fbd88f1ffa0 RCX: 00007fbd88cc8ec9
RDX: 000000000000ffc0 RSI: 0000200000000000 RDI: 00000000000000c8
RBP: 00007fbd88d4bf91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fbd88f20038 R14: 00007fbd88f1ffa0 R15: 00007ffc72f007b8
 </TASK>