> -----Original Message----- > From: Christoffer Dall [mailto:christoffer.dall@xxxxxxxxxx] > Sent: Tuesday, December 15, 2015 2:59 PM > To: Bhushan Bharat-R65777 <Bharat.Bhushan@xxxxxxxxxxxxx> > Cc: kvmarm@xxxxxxxxxxxxxxxxxxxxx; kvm@xxxxxxxxxxxxxxx; linux-arm- > kernel@xxxxxxxxxxxxxxxxxxx; linux-kernel@xxxxxxxxxxxxxxx > Subject: Re: ARM64/KVM: Bad page state in process iperf > > On Tue, Dec 15, 2015 at 03:46:03AM +0000, Bhushan Bharat wrote: > > > > Hi All, > > > > I am running "iperf" in KVM guest on ARM64 machine and observing below > crash. > > Which host/guest kernel version is this? We are using Linux-v4.1 for both host (4K page size) and guest (64K page size). > > Which hardware? This is observed on Freescale LS2085 hardware based on A57 (8 CPUs). Thanks -Bharat > > -Christoffer > > > > > ============================= > > $iperf -c 3.3.3.3 -P 4 -t 0 -i 5 -w 90k > > ------------------------------------------------------------ > > Client connecting to 3.3.3.3, TCP port 5001 TCP window size: 180 > > KByte (WARNING: requested 90.0 KByte) > > ------------------------------------------------------------ > > [ 3] local 3.3.3.1 port 51131 connected with 3.3.3.3 port 5001 [ 6] > > local 3.3.3.1 port 51134 connected with 3.3.3.3 port 5001 [ 5] local > > 3.3.3.1 port 51133 connected with 3.3.3.3 port 5001 [ 4] local > > 3.3.3.1 port 51132 connected with 3.3.3.3 port 5001 > > [ 53.088567] random: nonblocking pool is initialized > > [ ID] Interval Transfer Bandwidth > > [ 3] 0.0- 5.0 sec 638 MBytes 1.07 Gbits/sec > > [ 4] 35.0-40.0 sec 1.66 GBytes 2.85 Gbits/sec [ 5] 40.0-45.0 sec > > 1.11 GBytes 1.90 Gbits/sec [ 4] 40.0-45.0 sec 1.16 GBytes 1.99 > > Gbits/sec > > [ 98.895207] BUG: Bad page state in process iperf pfn:0a584 > > [ 98.896164] page:ffff780000296100 count:-1 mapcount:0 mapping: > (null) index:0x0 > > [ 98.897436] flags: 0x0() > > [ 98.897885] page dumped because: nonzero _count > > [ 98.898640] Modules linked in: > > [ 98.899178] CPU: 0 PID: 1639 Comm: iperf Not tainted 4.1.8-00461- > ge5431ad #141 > > [ 98.900302] Hardware name: linux,dummy-virt (DT) > > [ 98.901014] Call trace: > > [ 98.901406] [<ffff800000096cac>] dump_backtrace+0x0/0x12c > > [ 98.902522] [<ffff800000096de8>] show_stack+0x10/0x1c > > [ 98.903441] [<ffff800000678dc8>] dump_stack+0x8c/0xdc > > [ 98.904202] [<ffff800000145480>] bad_page+0xc4/0x114 > > [ 98.904945] [<ffff8000001487a4>] get_page_from_freelist+0x590/0x63c > > [ 98.905871] [<ffff80000014893c>] __alloc_pages_nodemask+0xec/0x794 > > [ 98.906791] [<ffff80000059fc80>] skb_page_frag_refill+0x70/0xa8 > > [ 98.907678] [<ffff80000059fcd8>] sk_page_frag_refill+0x20/0xd0 > > [ 98.908550] [<ffff8000005edc04>] tcp_sendmsg+0x1f8/0x9a8 > > [ 98.909368] [<ffff80000061419c>] inet_sendmsg+0x5c/0xd0 > > [ 98.910178] [<ffff80000059bb44>] sock_sendmsg+0x14/0x58 > > [ 98.911027] [<ffff80000059bbec>] sock_write_iter+0x64/0xbc > > [ 98.912119] [<ffff80000019b5b8>] __vfs_write+0xac/0x10c > > [ 98.913126] [<ffff80000019bcb8>] vfs_write+0x90/0x1a0 > > [ 98.913963] [<ffff80000019c53c>] SyS_write+0x40/0xa0 > > > > ----------- > > _______________________________________________ > > kvmarm mailing list > > kvmarm@xxxxxxxxxxxxxxxxxxxxx > > https://lists.cs.columbia.edu/mailman/listinfo/kvmarm -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
