[Bug 294925] nfs4 client error make FreeBSD panic

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=294925

--- Comment #3 from Jov <[email protected]> ---
(In reply to Rick Macklem from comment #2)
Hi Rick, Thanks for your work!
I got a panic again on another host.
I know soft/intr bugs for nfsv4.2, but I do not want to hang my client when the
server can not be connected.  

May 24 15:46:29 cq6 syslogd: last message repeated 1 times
May 24 15:46:29 cq6 kernel: Fatal trap 12: page fault while in kernel mode
May 24 15:46:29 cq6 kernel: cpuid = 0; apic id = 00
May 24 15:46:29 cq6 kernel: fault virtual address   = 0x0
May 24 15:46:29 cq6 kernel: fault code      = supervisor read data, page not
present
May 24 15:46:29 cq6 kernel: instruction pointer = 0x20:0xffffffff81075393
May 24 15:46:29 cq6 kernel: stack pointer           = 0x28:0xfffffe0053d3f790
May 24 15:46:29 cq6 kernel: frame pointer           = 0x28:0xfffffe0053d3f790
May 24 15:46:29 cq6 kernel: code segment        = base 0x0, limit 0xfffff, type
0x1b
May 24 15:46:29 cq6 kernel:             = DPL 0, pres 1, long 1, def32 0, gran
1
May 24 15:46:29 cq6 kernel: processor eflags    = interrupt enabled, resume,
IOPL = 0
May 24 15:46:29 cq6 kernel: current process     = 99462 (nfscl)
May 24 15:46:29 cq6 kernel: rdi: fffff8003d81e9e4 rsi: 0000000000000000 rdx:
0000000000000010
May 24 15:46:29 cq6 kernel: rcx: 0000000000000000  r8: 0000000000000025  r9:
fffffe0053d40000
May 24 15:46:29 cq6 kernel: rax: 0000000000000000 rbx: fffff8003d81e800 rbp:
fffffe0053d3f790
May 24 15:46:29 cq6 kernel: r10: 0000000000000001 r11: 000000000000044c r12:
fffff8007a476780
May 24 15:46:29 cq6 kernel: r13: fffff8006114e000 r14: fffffe0053d3f9a8 r15:
fffff8006114e018
May 24 15:46:29 cq6 kernel: trap number     = 12
May 24 15:46:29 cq6 kernel: panic: page fault
May 24 15:46:29 cq6 kernel: cpuid = 0
May 24 15:46:29 cq6 kernel: time = 1779608142
May 24 15:46:29 cq6 kernel: KDB: stack backtrace:
May 24 15:46:29 cq6 kernel: #0 0xffffffff80bbe1ed at kdb_backtrace+0x5d
May 24 15:46:29 cq6 kernel: #1 0xffffffff80b71576 at vpanic+0x136
May 24 15:46:29 cq6 kernel: #2 0xffffffff80b71433 at panic+0x43
May 24 15:46:29 cq6 kernel: #3 0xffffffff81079f69 at trap_pfault+0x3c9
May 24 15:46:29 cq6 kernel: #4 0xffffffff8104ff18 at calltrap+0x8
May 24 15:46:29 cq6 kernel: #5 0xffffffff80a0320d at newnfs_request+0xfbd
May 24 15:46:29 cq6 kernel: #6 0xffffffff80a11aca at
nfsrpc_destroysession+0x10a
May 24 15:46:29 cq6 kernel: #7 0xffffffff80a05ed7 at nfsv4_setsequence+0x77
May 24 15:46:29 cq6 kernel: #8 0xffffffff80a054af at nfscl_reqstart+0x32f
May 24 15:46:29 cq6 kernel: #9 0xffffffff80a383d7 at nfsrpc_renew+0x87
May 24 15:46:29 cq6 kernel: #10 0xffffffff80a1c6bf at nfscl_renewthread+0x76f
May 24 15:46:29 cq6 kernel: #11 0xffffffff80a53e34 at start_nfscl+0x14
May 24 15:46:29 cq6 kernel: #12 0xffffffff80b2786b at fork_exit+0x7b
May 24 15:46:29 cq6 kernel: #13 0xffffffff81050f3e at fork_trampoline+0xe
May 24 15:46:29 cq6 kernel: Uptime: 148d19h12m31s
May 24 15:46:29 cq6 kernel: Dumping 374 out of 2005
MB:..5%..13%..22%..35%..43%..52%..65%..73%..82%..94%
May 24 15:46:29 cq6 kernel: Dump complete
May 24 15:46:29 cq6 kernel: Automatic reboot in 15 seconds - press a key on the
console to abort
May 24 15:46:29 cq6 kernel: Rebooting...
May 24 15:46:29 cq6 kernel: ---<<BOOT>>---
May 24 15:46:29 cq6 kernel: Copyright (c) 1992-2025 The FreeBSD Project.

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