[Bug 247945] Kernel option KERN_TLS leads to an immediate panic while booting on ARM64 (RPi4)

[bugzilla-noreply at freebsd.org]

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=247945

--- Comment #4 from Mark Johnston <markj at FreeBSD.org> ---
Ah, it does panic if I add all three of RATELIMIT, TCPHPTS and KERN_TLS:

TCP_ratelimit: Is now initialized                                              
panic: Thread already setup for the VFP                                        
cpuid = 1                                                                      
time = 13                                                                      
KDB: stack backtrace:                                                          
db_trace_self() at db_fetch_ksymtab+0x158                                       
         pc = 0xffff0000007719e8  lr = 0xffff0000001094ac
         sp = 0xffff00005aa50570  fp = 0xffff00005aa50770  

db_fetch_ksymtab() at vpanic+0x194                                              
         pc = 0xffff0000001094ac  lr = 0xffff00000041bcb0                      
         sp = 0xffff00005aa50780  fp = 0xffff00005aa507d0                      

vpanic() at panic+0x44                                                          
         pc = 0xffff00000041bcb0  lr = 0xffff00000041ba58                      
         sp = 0xffff00005aa507e0  fp = 0xffff00005aa50890                      

panic() at fpu_kern_thread+0x68                                                
         pc = 0xffff00000041ba58  lr = 0xffff000000792cd8                      
         sp = 0xffff00005aa508a0  fp = 0xffff00005aa508a0                      

fpu_kern_thread() at ktls_enqueue+0x47c                                        
         pc = 0xffff000000792cd8  lr = 0xffff0000004aa980                      
         sp = 0xffff00005aa508b0  fp = 0xffff00005aa508f0                      

ktls_enqueue() at fork_exit+0x7c                                               
         pc = 0xffff0000004aa980  lr = 0xffff0000003d8144
         sp = 0xffff00005aa50900  fp = 0xffff00005aa50950

fork_exit() at fork_trampoline+0x10                                            
         pc = 0xffff0000003d8144  lr = 0xffff000000790dc4                      
         sp = 0xffff00005aa50960  fp = 0x0000000000000000

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