Date: Tue, 11 Dec 2001 18:41:31 +0100 From: Willem van Engen <wvengen@stack.nl> To: "Andrew Gallatin" <gallatin@cs.duke.edu> Cc: freebsd-emulation@freebsd.org Subject: Re: flexlm: works with linux_base-6, fails with linux_base-7 Message-ID: <20011211184131.0425b1fd.wvengen@stack.nl> In-Reply-To: <15382.5752.295875.987980@grasshopper.cs.duke.edu> References: <20011210115204.6ddde325.wvengen@stack.nl> <15382.5752.295875.987980@grasshopper.cs.duke.edu>
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On Tue, 11 Dec 2001 09:21:44 -0500 (EST)
"Andrew Gallatin" <gallatin@cs.duke.edu> wrote:
>
> Willem van Engen writes:
> > 492 maplelmg CALL open(0x80c3ee0,0x42,0x1b6)
> > 492 maplelmg NAMI "/compat/linux/usr/tmp"
> > 492 maplelmg NAMI "/usr/tmp/lockmaplelmg"
> > 492 maplelmg RET open 5
> > 492 maplelmg CALL semget(0x5,0x6,0xbfbff12c)
> > 492 maplelmg RET semget -1 errno -22 Unknown error: -22
>
> When posting kdumps of linux binaries, make sure to use linux_kdump,
> not kdump. The system call numbers are different between FreeBSD &
> linux. If you use the wrong kdump, you get misleading output.
I see, thanks!
> The failing syscall there (semget == #221) is actually linux_fcntl64
> Try enabling debugging for linux_fcntl64 in
> sys/compat/linux/linux_file.c
Ok, I compiled a kernel module with DEBUG defined and added some extra
printf's. The relevant output can be found below.
So this is a fcntl64(fd, F_SETLK, {0,0,0,F_WRLCK,SEEK_CUR}).
When I look at it with linux_base-6, the same arguments are used.
At the moment I have no clue.
- Willem
Kernel messages:
Dec 11 18:21:27 jeremy /kernel: linux(1960): fstat64(4, *)
Dec 11 18:21:27 jeremy /kernel: linux(1960): mmap(0, 8192, 3, 0x00000022, -1, 0)
Dec 11 18:21:27 jeremy /kernel: -> (0, 8192, 3, 0x00001002, -1, 0)
Dec 11 18:21:27 jeremy /kernel: linux(1960): llseek(4, 0:0, 0)
Dec 11 18:21:27 jeremy /kernel: linux(1960): open(/usr/tmp/lockmaplelmg, 0x42, 0x1b6)
Dec 11 18:21:27 jeremy /kernel: linux(1960): open returns error 0
Dec 11 18:21:27 jeremy /kernel: linux(1960): fcntl64(4, 00000006, *)
Dec 11 18:21:27 jeremy /kernel: > fcntl_bsd(4, F_SETLK, flock)
Dec 11 18:21:27 jeremy /kernel: > bsd.l_start = 0, lin.l_start = 0
Dec 11 18:21:27 jeremy /kernel: > bsd.l_len = 0, lin.l_len = 0
Dec 11 18:21:27 jeremy /kernel: > bsd.l_pid= 0, lin.l_pid = 0
Dec 11 18:21:27 jeremy /kernel: > bsd.l_type= 3, lin.l_type = 1
Dec 11 18:21:27 jeremy /kernel: > bsd.l_whence= 1, lin.l_whence = 1
Dec 11 18:21:27 jeremy /kernel: linux(1960): time(*)
Dec 11 18:21:27 jeremy /kernel: linux(1959): real select returns 4
Dec 11 18:21:27 jeremy /kernel: linux(1959): select_out -> 4
Dec 11 18:21:27 jeremy /kernel: linux(1959): sendsig(0x8050550, 20, 0xc9074f2c,0)
linux_kdump with linux_base-7:
925 maplelmg CALL close(0x4)
925 maplelmg RET close 0
925 maplelmg CALL munmap(0x28203000,0x2000)
925 maplelmg RET munmap 0
925 maplelmg CALL linux_open(0x80c3ee0,0x42,0x1b6)
925 maplelmg NAMI "/compat/linux/usr/tmp"
925 maplelmg NAMI "/usr/tmp/lockmaplelmg"
925 maplelmg RET linux_open 4
925 maplelmg CALL linux_fcntl64(0x4,0x6,0xbfbff114)
925 maplelmg RET linux_fcntl64 -1 errno 22 Invalid argument
925 maplelmg CALL close(0x4)
925 maplelmg RET close 0
925 maplelmg CALL linux_time(0)
925 maplelmg RET linux_time 1008086436/0x3c162da4
925 maplelmg CALL write(0x1,0x280d6000,0x5d)
925 maplelmg GIO fd 1 wrote 93 bytes
"17:00:36 (maplelmg) cannot establish lock - exiting (file: /usr/tmp/lo\
ckmaplelmg, errno: 22)
"
925 maplelmg RET write 93/0x5d
925 maplelmg CALL close(0x1)
925 maplelmg RET close 0
925 maplelmg CALL munmap(0x280d6000,0x2000)
925 maplelmg RET munmap 0
925 maplelmg CALL exit(0x29)
924 lmgrd PSIG SIGCHLD caught handler=0x8050550 mask=0x0 code=0x0
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