https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=293127
Bug ID: 293127
Summary: Kernel panic __mtx_lock_sleep due to nfsd?
Product: Base System
Version: 15.0-STABLE
Hardware: Any
OS: Any
Status: New
Severity: Affects Only Me
Priority: ---
Component: kern
Assignee: [email protected]
Reporter: [email protected]
Created attachment 267991
--> https://bugs.freebsd.org/bugzilla/attachment.cgi?id=267991&action=edit
kgdb session log
$ uname -a
FreeBSD maynas 15.0-STABLE FreeBSD 15.0-STABLE stable/15-n281999-4d36d18253b0
MAYNASKERNEL amd64
Feb 11 09:24:26 maynas kernel: Fatal trap 12: page fault while in kernel mode
Feb 11 09:24:26 maynas kernel: cpuid = 7; apic id = 0e
Feb 11 09:24:26 maynas kernel: fault virtual address = 0x488
Feb 11 09:24:26 maynas kernel: fault code = supervisor read data,
page not present
Feb 11 09:24:26 maynas kernel: instruction pointer =
0x20:0xffffffff80bb65d9
Feb 11 09:24:26 maynas kernel: stack pointer =
0x28:0xfffffe00d5c86470
Feb 11 09:24:26 maynas kernel: frame pointer =
0x28:0xfffffe00d5c864f0
Feb 11 09:24:26 maynas kernel: code segment = base 0x0, limit
0xfffff, type 0x1b
Feb 11 09:24:27 maynas kernel: = DPL 0, pres 1, long 1, def32
0, gran 1
Feb 11 09:24:27 maynas kernel: processor eflags = interrupt enabled, resume,
IOPL = 0
Feb 11 09:24:27 maynas kernel: current process = 2316 (nfsd: master)
Feb 11 09:24:27 maynas kernel: rdi: fffff80053f5f9f8 rsi: 0000000000000004 rdx:
0000000000000000
Feb 11 09:24:27 maynas kernel: rcx: fffff80053f5f9e0 r8: fffffe00d5c86590 r9:
fffffe00d5c865a4
Feb 11 09:24:27 maynas kernel: rax: 0000000000000000 rbx: fffffe00d5c86500 rbp:
fffffe00d5c864f0
Feb 11 09:32:00 maynas syslogd: kernel boot file is /boot/kernel/kernel
Feb 11 09:32:00 maynas kernel: ---<<BOOT>>---
This bug causes the system to reboot every 3 days or so. It appears that the
trap is caused by nfsd. I keep nfsd on with the following configuration:
rpcbind_enable="YES"
nfs_server_enable="YES"
mountd_flags="-l -r"
mountd_enable="YES"
nfs_client_enable="YES"
rpc_lockd_enable="YES"
rpc_statd_enable="YES"
autofs_enable="YES"
But the trap condition persists regardless of whether there is a client or not.
I also attach a kgdb session log.
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