The system has no problems booting latest 12.4, no errors, HW is working perfectly after all these years, tested with memtest86. But booting 13 or CURRENT results in a crash after loading crypto, always with the same Address 0x3446ff003446ff MCA: crypto: <crypto core> MCA: Bank 2, Status 0xb600000000140001 MCA: Global Cap 0x0000000000000005, Status 0x0000000000000004 MCA: Vendor "GenuineIntel", ID 0x619, APIC ID 0 MCA: CPU 0 UNCOR EN PCC unclassified error MCA: Address 0x3446ff003446ff panic: Unrecoverable machine check exception cpuid = 0 time = 1 KDB: stack backtrace: #0 0x107540f at kdb_backtrace+0x4f #1 0x102da3e at vpanic+0xlle #2 0x102d914 at panic+0x14 #3 0xl3d7ef8 at mca_intr+0xa8 #4 0x141dbd7 at trap+0x237 #5 0xffc0319f at _end+0xfde379cf #6 0x28 at 11+0x7 Booting from FreeBSD-14.0-CURRENT-i386-20221103-5cc5c9254da-259005-mini-memstick.img gives a more detailed report: MCA: Address 0x3446ff003446ff panic: Unrecoverable machine check exception cpuid = 0 time = 1 KDB: stack backtrace: db_trace_self_wrapper(0,1d906a0,0,8086,0,...) at db_trace_self_wrapper+0x28/fram e 0x22f9a24 vpanic(1553304,22f9a60,22f9a60,22f9a70,13cc948,...) at vpanic+0xf4/frame 0x22f9a 40 panic(1553304,d906a0,22f9b3c,22fa000,1c,...) at panic+0x14/frame 0x22f9a54 mca_intr(1e28d78,8,14a05da,215,1d9033c,...) at mca_intr+0xa8/frame 0x22f9a70 trap(22f9b3c,8,28,28,40,...) at trap+0x14e/frame 0x22f9b30 calltrap() at 0xffc0321f/frame 0x22f9b30 --- trap 0xlc, eip = 0x12c129d, esp = 0x22f9b7c, ebp = 0x22f9bcc --- zone_import(3c12c80,3c4540c,7d,0,2,...) at zone_import+0x2fd/frame 0x22f9bcc cache_alloc(0,2) at cache_alloc+0x36e/frame 0x22f9c2c cache_alloc_retry(0,2,1c) at cache_alloc_retry+0x18/frame 0x22f9c4c uma_zalloc_arg(3c12c80,0,2) at uma_zalloc_arg+0xfa/frame 0x22f9c6c malloc(44,1acef28,2) at malloc+0x6b/frame 0x22f9c8c sysctl_add_oid(0,3df8080,ffffffff,14aa195,8004000f,3c13918,0,0,1007fb0,1518df1,1 4a0506,0) at sysctl_add_oid+0x1ab/frame 0x22f9cac zone_alloc_sysctl(2300000,0,22f9d38,f8d144,0,...) at zone_alloc_sysctl+0x2f2/fra me 0x22f9d04 uma_startup3(0) at uma_startup3+0x59/frame 0x22f9d14 mi_startup() at mi_startup+0x214/frame 0x22f9d38 btext() at btext+0x5f KDB: enter: panic [ thread pid 0 tid 100000 ] Stopped at kdb_enter+0x34: movl $0,kdb_why db> As I have no serial console this was OCR from screenshot, I hope I got all the mistakes corrected.
Looks like I hit a bug that jhb tried to fix in 2012: https://lists.freebsd.org/pipermail/freebsd-current/2012-February/031879.html But what is strange is that FreeBSD 12 works perfectly on the system, no "hw.mca.enabled=0" needed. Furthermore when setting hw.mca.enabled=0 the boot now continues further but crashes with: ahc_isa_identify 14: ioport 0xec00 alloc failed pnp_identify: Trying Read_Port at 203 pnp_identify: Trying Read_Port at 243 pnp_identify: Trying Read_Port at 283 pnp_identify: Trying Read_Port at 2c3 pnp_identify: Trying Read_Port at 303 pnp_identify: Trying Read_Port at 343 pnp_identify: Trying Read_Port at 383 pnp_identify: Trying Read_Port at 3c3 PHIP Identify complete pnpbios: 13 devices, largest 98 bytes panic: isa_set_pnpbios_handle failed for (null) on bus isa0, error = 2 cpuid = 0 time = 1 KDB: stack backtrace: db_trace_self_wrapper(0,1d906a0,0,b8dde80,2,...) at db_trace_self_wrapper+0x28/f rame 0x22f9c10 vpanic(155e5ec,22f9c4c,22f9c4c,22f9cc4,13ec318,...) at vpanic+0xf4/frame 0x22f9c 2c panic(155e5ec,147a78d,8,b8e0870,2,...) at panic+0x14/frame 0x22f9c40 pnpbios_identify(1b1b9fc,b8de680) at pnpbios_identify+0x648/frame 0x22f9cc4 bus_generic_probe(b8de680) at bus_generic_probe+0x25/frame 0x22f9ce0 isa_probe_children(b8de680) at isa_probe_children+0x12/frame 0x22f9d08 configure(8) at configure+0x17/frame 0x22f9d14 mi_startup() at mi_startup+0x214/frame 0x22f9d38 btext() at btext+0x5f KDB: enter: panic [ thread pid 0 tid 100000 ] Stopped at kdb_enter+0x34: movl $8,kdb_why db> Why I am reporting this - FreeBSD 13 switched i386 to 686/P6 meaning Pentium Pro should be the minimum supported system. I have no real world use case for the machine.
The last comment applies for FreeBSD-14.0-CURRENT-i386-20221103-5cc5c9254da-259005-mini-memstick.img. FreeBSD 13.1 works on the machine when booting with "hw.mca.enabled=0". So this is 2 bugs now in a single bug report: * 13+ needs "hw.mca.enabled=0" * CURRENT panics with: isa_set_pnpbios_handle failed for (null) on bus isa0, error = 2
(In reply to hannula from comment #2) > 2 bugs now in a single bug report: For things to be more easily tracked and actionable: have separate reports, with distinctive summary lines and other details. Also, please note the tiering for i386: <https://www.freebsd.org/platforms/>. Thanks
I will close this ticket and think about opening 2 new tickets with more details.