Date: Sun, 7 Jun 2009 13:31:48 +0800 From: Adrian Chadd <adrian@freebsd.org> To: Bruno Damour <llama@ruomad.net> Cc: freebsd-xen@freebsd.org Subject: Re: freebsd on opensolaris dom0 Message-ID: <d763ac660906062231l4d8f8472s14bff7b245154f89@mail.gmail.com> In-Reply-To: <4A2B4BDC.2020900@ruomad.net> References: <4A2864E1.40208@ruomad.net> <d763ac660906041941t545df92dna922097d2691e04b@mail.gmail.com> <4A28A674.6020809@ruomad.net> <4A28AA18.3010808@ruomad.net> <4A2A962A.9050207@ruomad.net> <d763ac660906062124i29348286kd01bb8d5441fa1c9@mail.gmail.com> <4A2B4412.8030704@ruomad.net> <d763ac660906062141v6ead5799v584fcc030441fdee@mail.gmail.com> <4A2B4BDC.2020900@ruomad.net>
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I can't trigger this here with my Centos 5.3 domU. I have a feeling this may be related to the hypervisor/dom0 environment. Not to say it isn't a bug, it is just going to take me more time to try and figure out. I'll commit some more Xen tidyups to -current and build a new image for you. It'll still have the bug but it will at least include the local source changes I am trying out. That will make testing a bit easier on me. Thanks, Adrian 2009/6/7 Bruno Damour <llama@ruomad.net>: > Adrian Chadd wrote: >> >> What, so fetching data from ftpd running on the xen domU to another >> LAN connected host? >> >> >>> >>> so the problem seems to come more from upload traffic than download ? >>> >> >> See, thats the sort of information I need to reproduce the problem. :) >> >> > > I enable a ftp on a local LAN host (not the dom0) and it confirms that ftp > get works whereas a ftp put command triggers an immediate crash : > > # ftp 192.168.0.103 > ftp: Unknown port `ftp', using port 21 > Connected to 192.168.0.103. > 220 random FTP server ready. > Name (192.168.0.103): bruno > 331 Password required for bruno. > Password: > 230 User bruno logged in. > Remote system type is UNIX. > Using binary mode to transfer files. > ftp> get zaum_by_slbprod-2.6.sql > local: zaum_by_slbprod-2.6.sql remote: zaum_by_slbprod-2.6.sql > 229 Entering Extended Passive Mode (|||14185|) > 150 Opening BINARY mode data connection for zaum_by_slbprod-2.6.sql > (10514 bytes). > 226 Transfer complete. > 10514 bytes received in 00:00 (31.29 KB/s) > ftp> put foobar > local: foobar remote: foobar > 229 Entering Extended Passive Mode (|||20050|) > 150 Opening BINARY mode data connection for foobar. > Kernel page fault with the following non-sleepable locks held: > exclusive sleep mutex xennetif_tx (network transmit lock) r = 0 > (0xc39430a0) locked @ > > /home/adrian/work/freebsd/xen/svn/head/sys/dev/xen/netfront/netfront.c:1144 > KDB: stack backtrace: > X_db_sym_numargs(c03578d2,c3527ab4,c01166d5,c037b2c8,478,...) at > X_db_sym_numargs+0x146 > kdb_backtrace(c037b2c8,478,ffffffff,c050a9cc,c3527aec,...) at > kdb_backtrace+0x29 > witness_display_spinlock(c0359db5,c3527b00,4,1,0,...) at > witness_display_spinlock+0x75 > witness_warn(5,0,c0383c74,c3527b5c,c,...) at witness_warn+0x1fd > trap(c3527b88) at trap+0x13e > alltraps(c39430a0,0,c037b2c8,478,2,...) at alltraps+0x1b > xlvbd_add(c3943000,c3527cc8,c00c6924,c03ce780,c3782538,...) at > xlvbd_add+0x36b3 > intr_event_execute_handlers(c37087ec,c3782500,c034fbb5,4e9,c3782570,...) > at intr_event_execute_handlers+0x125 > intr_event_add_handler(c3948140,c3527d38,c034f8e8,335,c37087ec,...) > at intr_event_add_handler+0x41f > fork_exit(c00afe50,c3948140,c3527d38) at fork_exit+0xb8 > fork_trampoline() at fork_trampoline+0x8 > --- trap 0, eip = 0, esp = 0xc3527d70, ebp = 0 --- > > > Fatal trap 12: page fault while in kernel mode > cpuid = 0; apic id = 00 > fault virtual address = 0x2 > fault code = supervisor read, page not present > instruction pointer = 0x21:0xc02f719b > stack pointer = 0x29:0xc3527bc8 > frame pointer = 0x29:0xc3527bf8 > code segment = base 0x0, limit 0xf9800, type 0x1b > = DPL 1, pres 1, def32 1, gran 1 > processor eflags = interrupt enabled, resume, IOPL = 0 > current process = 12 (irq135: xn) > [thread pid 12 tid 100024 ] > Stopped at xlvbd_add+0x204b: cmpl $0,0(%edx) > db> bt Tracing pid 12 tid 100024 td 0xc3756d80 > xlvbd_add(c39430a0,0,c037b2c8,478,2,...) at xlvbd_add+0x204b > xlvbd_add(c3943000,c3527cc8,c00c6924,c03ce780,c3782538,...) at > xlvbd_add+0x36b3 > intr_event_execute_handlers(c37087ec,c3782500,c034fbb5,4e9,c3782570,...) > at intr_event_execute_handlers+0x125 > intr_event_add_handler(c3948140,c3527d38,c034f8e8,335,c37087ec,...) > at intr_event_add_handler+0x41f > fork_exit(c00afe50,c3948140,c3527d38) at fork_exit+0xb8 > fork_trampoline() at fork_trampoline+0x8 > --- trap 0, eip = 0, esp = 0xc3527d70, ebp = 0 --- > db> > >
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