Date: Mon, 21 Feb 2022 23:21:39 +0000 From: Michael Jung <mikej@paymentallianceintl.com> To: Hans Petter Selasky <hps@selasky.org>, freebsd-current <freebsd-current@freebsd.org> Subject: RE: New panic in main-n253273-a52d8d4a6c6: Message-ID: <8e780c77416b48e7bf79186cc77fe5c5@MAIL-HUB.pai.local> In-Reply-To: <dbd20a4d-b5a3-390e-a231-8ccca4f64c70@selasky.org> References: <b7ca5b5e7a9a4df3951a2cb2f1d63552@MAIL-HUB.pai.local> <d04c0d93-8168-f53a-a5fd-865a1f6d2486@selasky.org> <6fcc161dd23b4f7ebe7cc789f11c017e@MAIL-HUB.pai.local> <dbd20a4d-b5a3-390e-a231-8ccca4f64c70@selasky.org>
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<BR>
-----Original Message-----<BR>
From: Hans Petter Selasky [mailto:hps@selasky.org]<BR>
Sent: Monday, February 21, 2022 8:53 AM<BR>
To: Michael Jung <mikej@paymentallianceintl.com>; freebsd-current <=
;freebsd-current@freebsd.org><BR>
Subject: Re: New panic in main-n253273-a52d8d4a6c6:<BR>
<BR>
On 2/21/22 14:07, Michael Jung wrote:<BR>
> (kgdb) fram 16<BR>
> #16 0xffffffff80bad587 in closefp_impl (fdp=3D0xfffffe012b7c0430, fd=
=3D4, fp=3D0xfffff801cc119280, td=3D0xfffffe00df8d0560, audit=3Dtrue) at /u=
sr/src/sys/kern/kern_descrip.c:1300<BR>
> 1300 error =3D closef(fp, td);<BR>
><BR>
> (kgdb) print /x *fdp<BR>
> $1 =3D {fd_files =3D 0xfffffe00df6d9000, fd_map =3D 0xfffff80001bb1800=
, fd_freefile =3D 0x4, fd_refcnt =3D 0x1, fd_holdcnt =3D 0x1, fd_sx =3D {lo=
ck_object =3D {lo_name =3D 0xffffffff8124f6a9, lo_flags =3D 0x2330000, lo_d=
ata =3D 0x0,<BR>
> lo_witness =3D 0xfffff8041eb94000}, sx_lock =3D 0x1}, fd_kqlist=
=3D {tqh_first =3D 0x0, tqh_last =3D 0x0}, fd_holdleaderscount =3D 0x0, fd=
_holdleaderswakeup =3D 0x0}<BR>
> (kgdb)<BR>
<BR>
Can you also:<BR>
<BR>
print /x *fp<BR>
<BR>
in the same frame?<BR>
<BR>
--HPS<BR>
<BR>
<BR>
<BR>
Unread portion of the kernel message buffer:<BR>
panic: refcount 0xfffff801cc119284 wraparound<BR>
cpuid =3D 7<BR>
time =3D 1645382575<BR>
KDB: stack backtrace:<BR>
db_trace_self_wrapper() at db_trace_self_wrapper+0x2b/frame 0xfffffe0119a83=
c80<BR>
vpanic() at vpanic+0x17f/frame 0xfffffe0119a83cd0<BR>
panic() at panic+0x43/frame 0xfffffe0119a83d30<BR>
fdclose() at fdclose/frame 0xfffffe0119a83dc0<BR>
closefp_impl() at closefp_impl+0x77/frame 0xfffffe0119a83e00<BR>
amd64_syscall() at amd64_syscall+0x12e/frame 0xfffffe0119a83f30<BR>
fast_syscall_common() at fast_syscall_common+0xf8/frame 0xfffffe0119a83f30<=
BR>
--- syscall (6, FreeBSD ELF64, sys_close), rip =3D 0x3309a531b62a, rsp =3D =
0x3309a2802bc8, rbp =3D 0x3309a2803000 ---<BR>
KDB: enter: panic<BR>
<BR>
__curthread () at /usr/src/sys/amd64/include/pcpu_aux.h:55<BR>
55 __asm("movq %%gs:%P1,%0" : "=3Dr" (td) =
: "n" (offsetof(struct pcpu,<BR>
<BR>
<BR>
(kgdb) frame 16<BR>
#16 0xffffffff80bad587 in closefp_impl (fdp=3D0xfffffe012b7c0430, fd=3D4, f=
p=3D0xfffff801cc119280, td=3D0xfffffe00df8d0560, audit=3Dtrue) at /usr/src/=
sys/kern/kern_descrip.c:1300<BR>
1300 error =3D closef(fp, td);<BR>
<BR>
<BR>
(kgdb) print /x *fp<BR>
$1 =3D {f_flag =3D 0x5, f_count =3D 0xffffffff, f_data =3D 0xfffff800158b04=
00, f_ops =3D 0xffffffff81b052d0, f_vnode =3D 0xfffff800d9156000, f_cred =
=3D 0xfffff801d81be400, f_type =3D 0x1, f_vnread_flags =3D 0x0, {f_seqcount=
=3D {0x0,<BR>
0x0}, f_pipegen =3D 0x0}, f_nextoff =3D {0x0, 0x0}, f_vnun =3D {fvn_c=
devpriv =3D 0x0, fvn_advice =3D 0x0}, f_offset =3D 0x0}<BR>
(kgdb)<BR>
<BR>
<BR>
<BR>
<BR>
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