On 18/11/2020 05:53, Kyle Evans wrote:
On Tue, Nov 17, 2020 at 10:01 PM Mark Johnston <ma...@freebsd.org> wrote:
On Tue, Nov 17, 2020 at 08:19:12PM +0200, Konstantin Belousov wrote:
On Tue, Nov 17, 2020 at 06:20:31PM +0100, Johan Hendriks wrote:
Hello all after updating FreeBSD13 from r367724 to r367755 my samba server
craches the server.
I did rebuild samba 4.11 but that does not help.
The output on the console is the following.
Fatal trap 12: page fault while in kernel mode
cpuid =3; apic id = 06
fault virtual address = 0x803a122b8
fault code = supervisor read instruction, protection
violation
instruction pointer = 0x20:0x803a122b8
stack pointer = 0x28:0xfffffe0127733a50
frame pointer = 0x28:0x803a122b0
code segment = base 0x0, limit 0xfffff, type 0x1b
= DPL 0, pres 1, long 1, def32 0, gran 1
processor eflags = 17340 (smbd)
trap number = 12
panic: page fault
cpuid =3
time = 1605632521
KDB: stack backtrace:
db_trace_self_wrapper() at db_trace_setf_wrapper+0x2b/frame
0xfffffe0127733700
vpanic() at vpanic+0x182/frame 0xfffffe0127733750
panic() at panic+0x43/frame 0xfffffe01277337b0
trap_fatal() at trap_fatal+0x387/frame 0xfffffe0127733810
trap_pfault() at trap_pfault+0x4f/frame 0xfffffe0127733870
trap() at trap+0x27d/frame 0xfffffe0127733980
calltrap() at caltrap+0x8/frame 0xfffffe0127733980
--- trap 0xc, rip = 0x803a122b8, rsp = 0xfffffe0127733a50, rbp = 0x803a122b0
---
KDB: enter: panic
[ thread pid 17340 tid 101772 ]
stopped at kdb_enter+0x37: movq $0,0x1fa9446(%rip)
db>
This looks like SMEP catching an issue, but it is not clear why.
Probably fixed by r367783? The bug would have partially overwritten the
stack frame, resulting in a jump to a user address after a return.
Ah, yes, sorry that I missed this -- smbd was in-fact the exact
program that the reporter noted observed it with, and what the fix was
confirmed with. Sorry for the breakage~
Kyle Evans
I can confirm all is working fine again after i svnupped to r367785
Thank you all for your time.
regards
Johan
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