Panic on Boot - Current AMD64

>> I get panic on boot from current kernel.
>> Since last night - changes to vm system ?
>> World is Current as of this morning
>>
>> FreeBSD is a registered trademark of The FreeBSD Foundation.
>> FreeBSD 12.0-CURRENT #0 r328948: Tue Feb  6 11:30:57 PST 2018
>>      root at pozo.com 
>> <https://lists.freebsd.org/mailman/listinfo/freebsd-current>:/usr/src/sys/amd64/compile/pozo amd64
>> FreeBSD clang version 6.0.0 (branches/release_60 324090) (based on LLVM 6.0.0)
>> Table 'FACP' at 0xdfbc57e8
>> Table 'APIC' at 0xdfbc585c
>> Table 'ASF!' at 0xdfbc58e0
>> Table 'MCFG' at 0xdfbc5943
>> Table 'TCPA' at 0xdfbc597f
>> Table 'SLIC' at 0xdfbc59b1
>> Table 'HPET' at 0xdfbc5b27
>> ACPI: No SRAT table found
>> panic: UMA: Increase vm.boot_pages
>> cpuid = 0
>> time = 1
>> KDB: stack backtrace:
>> db_trace_self_wrapper() at db_trace_self_wrapper+0x2b/frame 0xffffffff820bc820
>> vpanic() at vpanic+0x18d/frame 0xffffffff820bc880
>> panic() at panic+0x43/frame 0xffffffff820bc8e0
>> startup_alloc() at startup_alloc+0x19c/frame 0xffffffff820bc940
>> keg_alloc_slab() at keg_alloc_slab+0xef/frame 0xffffffff820bc9c0
>> keg_fetch_slab() at keg_fetch_slab+0x128/frame 0xffffffff820bca20
>> zone_fetch_slab() at zone_fetch_slab+0x69/frame 0xffffffff820bca50
>> zone_import() at zone_import+0x5a/frame 0xffffffff820bcaa0
>> zone_alloc_item() at zone_alloc_item+0x3b/frame 0xffffffff820bcae0
>> uma_startup() at uma_startup+0x3d3/frame 0xffffffff820bcbd0
>> vm_page_startup() at vm_page_startup+0x338/frame 0xffffffff820bcc20
>> vm_mem_init() at vm_mem_init+0x1d/frame 0xffffffff820bcc50
>> mi_startup() at mi_startup+0x118/frame 0xffffffff820bcc70
>> btext() at btext+0x2c
>> KDB: enter: panic
>> [ thread pid 0 tid 0 ]
>> Stopped at      kdb_enter+0x3b: movq    $0,kdb_why
>> db> bt
>> Tracing pid 0 tid 0 td 0xffffffff80ff1240
>> kdb_enter() at kdb_enter+0x3b/frame 0xffffffff820bc820
>> vpanic() at vpanic+0x1aa/frame 0xffffffff820bc880
>> panic() at panic+0x43/frame 0xffffffff820bc8e0
>> startup_alloc() at startup_alloc+0x19c/frame 0xffffffff820bc940
>> keg_alloc_slab() at keg_alloc_slab+0xef/frame 0xffffffff820bc9c0
>> keg_fetch_slab() at keg_fetch_slab+0x128/frame 0xffffffff820bca20
>> zone_fetch_slab() at zone_fetch_slab+0x69/frame 0xffffffff820bca50
>> zone_import() at zone_import+0x5a/frame 0xffffffff820bcaa0
>> zone_alloc_item() at zone_alloc_item+0x3b/frame 0xffffffff820bcae0
>> uma_startup() at uma_startup+0x3d3/frame 0xffffffff820bcbd0
>> vm_page_startup() at vm_page_startup+0x338/frame 0xffffffff820bcc20
>> vm_mem_init() at vm_mem_init+0x1d/frame 0xffffffff820bcc50
>> mi_startup() at mi_startup+0x118/frame 0xffffffff820bcc70
>> btext() at btext+0x2c
>> db>
> 
> 
> Same panic here with HEAD from this afternoon in a Lenovo ThinkPad S440 
> with 4 GB.
> 
> Workaround: break into the loader prompt and:
> 
> set vm.boot_pages=120
> boot
> 
> When booting kernel.old, vm.boot_pages is 64.
> 
> There is something wrong with r328916.
> 
> Hope it helps,
> Juan

Hi!

Recent commits 328955, 328953 and 328952 by glebius_at_ do not resolve the 
issue here.

Hope it helps,
Juan