watchdog: BUG: soft lockup - CPU#1 stuck for 22s! [kworker/1:11:11573]
Modules linked in:

irq event stamp: 6030
hardirqs last  enabled at (6029): [<ffffffff88a00cc2>] asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:632
hardirqs last disabled at (6030): [<ffffffff888a0cbb>] sysvec_apic_timer_interrupt+0xb/0xc0 arch/x86/kernel/apic/apic.c:1100
softirqs last  enabled at (1358): [<ffffffff854f4fc7>] spin_unlock_bh include/linux/spinlock.h:399 [inline]
softirqs last  enabled at (1358): [<ffffffff854f4fc7>] nsim_dev_trap_report drivers/net/netdevsim/dev.c:585 [inline]
softirqs last  enabled at (1358): [<ffffffff854f4fc7>] nsim_dev_trap_report_work+0x867/0xbd0 drivers/net/netdevsim/dev.c:611
softirqs last disabled at (1356): [<ffffffff854f4f3a>] spin_lock_bh include/linux/spinlock.h:359 [inline]
softirqs last disabled at (1356): [<ffffffff854f4f3a>] nsim_dev_trap_report drivers/net/netdevsim/dev.c:581 [inline]
softirqs last disabled at (1356): [<ffffffff854f4f3a>] nsim_dev_trap_report_work+0x7da/0xbd0 drivers/net/netdevsim/dev.c:611
CPU: 1 PID: 11573 Comm: kworker/1:11 Not tainted 5.12.0-rc2-next-20210312-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: events bpf_prog_free_deferred

RIP: 0010:csd_lock_wait kernel/smp.c:440 [inline]
RIP: 0010:smp_call_function_many_cond+0x44d/0xce0 kernel/smp.c:967
Code: 00 00 00 fc ff df 4d 89 f4 4c 89 f5 49 c1 ec 03 83 e5 07 49 01 c4 83 c5 03 e8 2f 7e 0b 00 f3 90 41 0f b6 04 24 40 38 c5 7c 08 <84> c0 0f 85 c9 06 00 00 8b 43 08 31 ff 83 e0 01 41 89 c7 89 c6 e8
RSP: 0018:ffffc90000ae7998 EFLAGS: 00000206

RAX: 0000000000000000 RBX: ffff8881f603a4a0 RCX: 0000000000000000
RDX: ffff88811769e240 RSI: ffffffff816e5f91 RDI: 0000000000000003
RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000001
R10: ffffffff816e5fb7 R11: 0000000000000000 R12: ffffed103ec07495
R13: 0000000000000000 R14: ffff8881f603a4a8 R15: 0000000000000001
FS:  0000000000000000(0000) GS:ffff8881f6100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f1f5bdef000 CR3: 0000000115014005 CR4: 00000000001706e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 on_each_cpu_cond_mask+0x56/0xa0 kernel/smp.c:1133
 __purge_vmap_area_lazy+0x1f6/0x1c50 mm/vmalloc.c:1360
 _vm_unmap_aliases.part.0+0x413/0x520 mm/vmalloc.c:1784
 _vm_unmap_aliases mm/vmalloc.c:1758 [inline]
 vm_remove_mappings mm/vmalloc.c:2250 [inline]
 __vunmap+0x63f/0xb90 mm/vmalloc.c:2277
 __vfree+0x3c/0xd0 mm/vmalloc.c:2333
 vfree+0x5a/0x90 mm/vmalloc.c:2364
 bpf_jit_free+0xbb/0x1c0
 bpf_prog_free_deferred+0x55c/0x6e0 kernel/bpf/core.c:2225
 process_one_work+0x98d/0x1630 kernel/workqueue.c:2275
 worker_thread+0x64c/0x1120 kernel/workqueue.c:2421
 kthread+0x3b1/0x4a0 kernel/kthread.c:292
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294