RE: New panic in main-n253273-a52d8d4a6c6:

-----Original Message-----
From: Hans Petter Selasky [mailto:hps@selasky.org]
Sent: Monday, February 21, 2022 8:53 AM
To: Michael Jung <mikej@paymentallianceintl.com>; freebsd-current <freebsd-current@freebsd.org>
Subject: Re: New panic in main-n253273-a52d8d4a6c6:

On 2/21/22 14:07, Michael Jung wrote:
> (kgdb) fram 16
> #16 0xffffffff80bad587 in closefp_impl (fdp=0xfffffe012b7c0430, fd=4, fp=0xfffff801cc119280, td=0xfffffe00df8d0560, audit=true) at /usr/src/sys/kern/kern_descrip.c:1300
> 1300            error = closef(fp, td);
>
> (kgdb) print /x *fdp
> $1 = {fd_files = 0xfffffe00df6d9000, fd_map = 0xfffff80001bb1800, fd_freefile = 0x4, fd_refcnt = 0x1, fd_holdcnt = 0x1, fd_sx = {lock_object = {lo_name = 0xffffffff8124f6a9, lo_flags = 0x2330000, lo_data = 0x0,
>        lo_witness = 0xfffff8041eb94000}, sx_lock = 0x1}, fd_kqlist = {tqh_first = 0x0, tqh_last = 0x0}, fd_holdleaderscount = 0x0, fd_holdleaderswakeup = 0x0}
> (kgdb)

Can you also:

print /x *fp

in the same frame?

--HPS



Unread portion of the kernel message buffer:
panic: refcount 0xfffff801cc119284 wraparound
cpuid = 7
time = 1645382575
KDB: stack backtrace:
db_trace_self_wrapper() at db_trace_self_wrapper+0x2b/frame 0xfffffe0119a83c80
vpanic() at vpanic+0x17f/frame 0xfffffe0119a83cd0
panic() at panic+0x43/frame 0xfffffe0119a83d30
fdclose() at fdclose/frame 0xfffffe0119a83dc0
closefp_impl() at closefp_impl+0x77/frame 0xfffffe0119a83e00
amd64_syscall() at amd64_syscall+0x12e/frame 0xfffffe0119a83f30
fast_syscall_common() at fast_syscall_common+0xf8/frame 0xfffffe0119a83f30
--- syscall (6, FreeBSD ELF64, sys_close), rip = 0x3309a531b62a, rsp = 0x3309a2802bc8, rbp = 0x3309a2803000 ---
KDB: enter: panic

__curthread () at /usr/src/sys/amd64/include/pcpu_aux.h:55
55              __asm("movq %%gs:%P1,%0" : "=r" (td) : "n" (offsetof(struct pcpu,


(kgdb) frame 16
#16 0xffffffff80bad587 in closefp_impl (fdp=0xfffffe012b7c0430, fd=4, fp=0xfffff801cc119280, td=0xfffffe00df8d0560, audit=true) at /usr/src/sys/kern/kern_descrip.c:1300
1300            error = closef(fp, td);


(kgdb) print /x *fp
$1 = {f_flag = 0x5, f_count = 0xffffffff, f_data = 0xfffff800158b0400, f_ops = 0xffffffff81b052d0, f_vnode = 0xfffff800d9156000, f_cred = 0xfffff801d81be400, f_type = 0x1, f_vnread_flags = 0x0, {f_seqcount = {0x0,
      0x0}, f_pipegen = 0x0}, f_nextoff = {0x0, 0x0}, f_vnun = {fvn_cdevpriv = 0x0, fvn_advice = 0x0}, f_offset = 0x0}
(kgdb)




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