Re: Fatal trap 12: page fault while in kernel mode swapper

On 07.01.2025 19:09, Christian Kujau wrote:
> On Sun, 5 Jan 2025, Marco Beishuizen wrote:
> 
> A similar splat was reported on freebsd-current, quite recently actually:
> 
> | Re: EFI RT page fault in init pid = 1
> | https://marc.info/?l=freebsd-current&m=173599133021897&w=2
> 
> A bit puzzling that this also happens for your 14.2-STABLE system. Maybe
> check back with freebsd-current, "a developer might be interested" someone
> wrote :-)

The same happened on one of my hosts less than 24 hours ago, a day after 
the planned upgrade to 14.3 (running 14.3-RELEASE-p2). The system has 
two ZFS pools, and both were successfully scrubbed after the upgrade a 
few days ago.

Fatal trap 12: page fault while in kernel mode
cpuid = 3; apic id = 06
fault virtual address   = 0xc84bb018
fault code              = supervisor read data, page not present
instruction pointer     = 0x20:0xc8799cdf
stack pointer           = 0x28:0xfffffe00f9e58a80
frame pointer           = 0x28:0xfffffe00f9e58cb0
code segment            = base 0x0, limit 0xfffff, type 0x1b
                         = DPL 0, pres 1, long 1, def32 0, gran 1
processor eflags        = interrupt enabled, resume, IOPL = 0
current process         = 0 (thread taskq)
rdi: fffffe00f9e58d18 rsi: fffff80001b31c60 rdx: 00000000c84bb018
rcx: 00000000c8790004  r8: 0000000000000008  r9: fffffe00f9e58df7
rax: 00000000c84bb018 rbx: 0000000000000000 rbp: fffffe00f9e58cb0
r10: 0000000000000000 r11: 000000000000001c r12: fffff800012e5d58
r13: 0000000000000000 r14: fffffe00f9e58e20 r15: fffffe00f9e58dc0
trap number             = 12
EFI RT page fault


Not sure what caused that, especially since there are no timestamps and 
the system is hosting Bareos SD pools, so it most likely happened during 
some backup jobs running, as a best guess. Would force the scrubbing on 
both pools then.


Oleg