kthread+0x34b/0x3d0 kernel/kthread.c:313
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:299
watchdog: BUG: soft lockup - CPU#1 stuck for 123s! [kworker/1:19:3028]
Modules linked in:
CPU: 1 PID: 3028 Comm: kworker/1:19 Tainted: G        W         5.10.209-syzkaller-00032-gc449d2a618ef #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
Workqueue: events bpf_map_free_deferred
RIP: 0010:csd_lock_wait kernel/smp.c:229 [inline]
RIP: 0010:smp_call_function_single+0x278/0x510 kernel/smp.c:517
Code: 0f 85 18 02 00 00 44 8b 6c 24 48 44 89 ee 83 e6 01 31 ff e8 ba f0 0a 00 41 83 e5 01 75 0a e8 ff ec 0a 00 e9 eb 00 00 00 f3 90 <42> 0f b6 04 23 84 c0 75 15 f7 44 24 48 01 00 00 00 0f 84 cd 00 00
RSP: 0018:ffffc9000104fb40 EFLAGS: 00000293
RAX: ffffffff815fbb14 RBX: 1ffff92000209f71 RCX: ffff8881139e8000
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffffc9000104fc40 R08: ffffffff815fbae6 R09: ffffed103ee0aec9
R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000
R13: 0000000000000001 R14: ffffc9000104fb88 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020680000 CR3: 000000000660f000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 </IRQ>
 rcu_barrier+0x218/0x400 kernel/rcu/tree.c:3929
 dev_map_free+0x153/0x630 kernel/bpf/devmap.c:218
 bpf_map_free_deferred+0xb3/0x110 kernel/bpf/syscall.c:486
 process_one_work+0x6dc/0xbd0 kernel/workqueue.c:2301
 worker_thread+0xaea/0x1510 kernel/workqueue.c:2447
 kthread+0x34b/0x3d0 kernel/kthread.c:313
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:299
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 4346 Comm: syz-executor.1 Tainted: G        W         5.10.209-syzkaller-00032-gc449d2a618ef #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
RIP: 0010:native_halt arch/x86/include/asm/irqflags.h:66 [inline]
RIP: 0010:halt arch/x86/include/asm/irqflags.h:112 [inline]
RIP: 0010:kvm_wait+0xec/0x150 arch/x86/kernel/kvm.c:921
Code: 03 42 0f b6 04 20 84 c0 75 6a 41 0f b6 45 00 44 38 f0 75 26 41 f7 c7 00 02 00 00 75 0f 0f 1f 44 00 00 0f 00 2d 55 4c d5 03 f4 <eb> 0e 0f 1f 44 00 00 0f 00 2d 46 4c d5 03 fb f4 4c 89 7c 24 18 ff
RSP: 0018:ffffc90001cf7120 EFLAGS: 00000046
RAX: 0000000000000003 RBX: 1ffff9200039ee28 RCX: ffffffff8150b554
RDX: 0000000000000001 RSI: 0000000000000003 RDI: ffffc90001cf7160
RBP: ffffc90001cf71d0 R08: dffffc0000000000 R09: ffffed10278b44c2
R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000
R13: ffff88813c5a2608 R14: 0000000000000003 R15: 0000000000000046
FS:  00007f6fa9b186c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2db25000 CR3: 00000001159d0000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <NMI>
 </NMI>
 pv_wait arch/x86/include/asm/paravirt.h:564 [inline]
 pv_wait_head_or_lock kernel/locking/qspinlock_paravirt.h:470 [inline]
 __pv_queued_spin_lock_slowpath+0x72f/0xc70 kernel/locking/qspinlock.c:508
 pv_queued_spin_lock_slowpath arch/x86/include/asm/paravirt.h:554 [inline]
 queued_spin_lock_slowpath arch/x86/include/asm/qspinlock.h:51 [inline]
 queued_spin_lock include/asm-generic/qspinlock.h:85 [inline]
 do_raw_spin_lock_flags include/linux/spinlock.h:195 [inline]
 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:119 [inline]
 _raw_spin_lock_irqsave+0x1a0/0x210 kernel/locking/spinlock.c:159
 htab_lock_bucket kernel/bpf/hashtab.c:154 [inline]
 htab_map_delete_elem+0xe2/0x4f0 kernel/bpf/hashtab.c:1257
 bpf_prog_2c29ac5cdc6b1842+0x3a/0x98
 bpf_dispatcher_nop_func include/linux/bpf.h:669 [inline]
 __bpf_trace_run kernel/trace/bpf_trace.c:2061 [inline]
 bpf_trace_run7+0x1b9/0x350 kernel/trace/bpf_trace.c:2103
 __bpf_trace_percpu_alloc_percpu+0x43/0x60 include/trace/events/percpu.h:10
 trace_percpu_alloc_percpu include/trace/events/percpu.h:10 [inline]
 pcpu_alloc+0x12b4/0x1420 mm/percpu.c:1844
 __alloc_percpu_gfp+0x27/0x30 mm/percpu.c:1893
 alloc_htab_elem+0x3d6/0x710 kernel/bpf/hashtab.c:911
 __htab_percpu_map_update_elem+0x2d3/0x450 kernel/bpf/hashtab.c:1147
 bpf_percpu_hash_update+0x90/0xc0 kernel/bpf/hashtab.c:1935
 bpf_map_update_value+0x25d/0x420 kernel/bpf/syscall.c:194
 map_update_elem kernel/bpf/syscall.c:1136 [inline]
 __do_sys_bpf kernel/bpf/syscall.c:4417 [inline]
 __se_sys_bpf+0x7687/0x11cb0 kernel/bpf/syscall.c:4385
 __x64_sys_bpf+0x7b/0x90 kernel/bpf/syscall.c:4385
 do_syscall_64+0x34/0x70
 entry_SYSCALL_64_after_hwframe+0x61/0xc6
RIP: 0033:0x7f6faada4ea9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 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 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f6fa9b180c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 00007f6faaed2f80 RCX: 00007f6faada4ea9
RDX: 0000000000000020 RSI: 00000000200003c0 RDI: 0000000000000002
RBP: 00007f6faadf14a4 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f6faaed2f80 R15: 00007ffff28606b8