Re: rainier-bmc machine dumping core with latest qemu

[Ninad Palsule]

Hi Emanuele,


On 2/9/23 5:24 AM, Emanuele Giuseppe Esposito wrote:
> Adding Kevin too.
>
> I can't reproduce your issue. I tried the exact steps showed in your
> mail, both with BLD_VERSION=20230205025034 (not anymore latest compose)
> and BLD_VERSION=20230209025037 (currently latest), and the VM boots till
> the login screen.
>
> Talking with Kevin it looks like handle_aiocb_write_zeroes() should not
> use bdrv_getlength() but rather raw_co_getlength().
> Could you try replacing it in block/file-posix.c line 1741 and rebuild
> and see if it works?

Yes, I built it using raw_co_getlength() and now I am not hitting the abort.

Thanks for your time.

> Thank you,
> Emanuele
>
> Am 08/02/2023 um 15:56 schrieb Philippe Mathieu-Daudé:
> > Cc'ing Emanuele.
> >
> > On 8/2/23 15:26, Ninad Palsule wrote:
> > > Hello,
> > >
> > > I am hitting core dump while running qemu with rainier-bmc machine. I
> > > started
> > > hitting it after I rebased to latest qemu from master.
> > > Can someone please help?
> > >
> > > /home/abc/dev/qemu/build/qemu-system-arm -M rainier-bmc -nographic \
> > >     -kernel
> > > ./fitImage-linux.bin--${LINUX_VERSION}-r0-p10bmc-${BLD_VERSION}.bin \
> > >     -dtb
> > > ./aspeed-bmc-ibm-rainier--${LINUX_VERSION}-r0-p10bmc-${BLD_VERSION}.dtb \
> > >     -initrd
> > > ./obmc-phosphor-initramfs-p10bmc-${BLD_VERSION}.rootfs.cpio.xz \
> > >     -drive
> > > file=./obmc-phosphor-image-p10bmc-${BLD_VERSION}.rootfs.wic.qcow2,if=sd,index=2 
> > > \
> > >     -append 'rootwait console=ttyS4,115200n8 root=PARTLABEL=rofs-a'
> > >
> > >
> > >
> > > [  OK  ] Started Journal Service.
> > >            Starting Flush Journal to Persistent Storage...
> > > [   45.873184] systemd-journald[156]: Received client request to flush
> > > runtime journal.
> > > [   45.932231] systemd-journald[156]: File
> > > /var/log/journal/97cd620eaa284caf980533438c7355c4/system.journal
> > > corrupted or uncleanly shut down, renaming and replacing.
> > > qemu-system-arm: /home/abc/dev/qemu/block/block-gen.h:43:
> > > bdrv_poll_co: Assertion `qemu_get_current_aio_context() ==
> > > qemu_get_aio_context()' failed.
> > >
> > > Thread 3 "qemu-system-arm" received signal SIGABRT, Aborted.
> > > [Switching to Thread 0x7ffff6896640 (LWP 3898452)]
> > > __pthread_kill_implementation (no_tid=0, signo=6,
> > > threadid=140737329587776) at ./nptl/pthread_kill.c:44
> > > 44  ./nptl/pthread_kill.c: No such file or directory.
> > >
> > >
> > > #6  0x00007ffff77e8e96 in __GI___assert_fail
> > >       (assertion=assertion@entry=0x55555603e798
> > > "qemu_get_current_aio_context() ==
> > > qemu_get_aio_context()", file=file@entry=0x5555560aef28
> > > "/home/abc/dev/qemu/block/block-gen.h", line=line@entry=43,
> > > function=function@entry=0x5555560af080 <__PRETTY_FUNCTION__.9>
> > > "bdrv_poll_co") at ./assert/assert.c:101
> > > #7  0x0000555555da91f9 in bdrv_poll_co (s=0x7ffff68957f0) at
> > > /home/abc/dev/qemu/block/block-gen.h:43
> > > #8  bdrv_poll_co (s=0x7ffff68957f0) at
> > > /home/abc/dev/qemu/block/block-gen.h:38
> > > #9  bdrv_getlength (bs=<optimized out>) at block/block-gen.c:310
> > > #10 0x0000555555e3558e in handle_aiocb_write_zeroes
> > > (opaque=0x7fff419965f0) at ../block/file-posix.c:1741
> > > #11 0x0000555555ef80fd in worker_thread
> > > (opaque=opaque@entry=0x5555569e2300) at ../util/thread-pool.c:110
> > > #12 0x0000555555ee3901 in qemu_thread_start (args=<optimized out>) at
> > > ../util/qemu-thread-posix.c:505
> > > #13 0x00007ffff7843b43 in start_thread (arg=<optimized out>) at
> > > ./nptl/pthread_create.c:442
> > > #14 0x00007ffff78d5a00 in clone3 () at
> > > ../sysdeps/unix/sysv/linux/x86_64/clone3.S:81
> > >
> > > (gdb) p qemu_aio_context
> > > $1 = (AioContext *) 0x5555568b13d0
> > >
> > > ---------------------------------------
> > >
> > >
> > > Reproduction steps:
> > >
> > > 1. Clone and build qemu from https://github.com/qemu/qemu
> > > 2. Download following eBMC images
> > >
> > > BLD_VERSION=20230205025034
> > > LINUX_VERSION="6.0.19+git0+67c9407e1f"
> > > wget
> > > https://jenkins.openbmc.org/view/latest/job/latest-master/label=docker-builder,target=p10bmc/lastStableBuild/artifact/openbmc/build/tmp/deploy/images/p10bmc/obmc-phosphor-initramfs-p10bmc-${BLD_VERSION}.rootfs.cpio.xz
> > >
> > > wget
> > > https://jenkins.openbmc.org/view/latest/job/latest-master/label=docker-builder,target=p10bmc/lastStableBuild/artifact/openbmc/build/tmp/deploy/images/p10bmc/aspeed-bmc-ibm-rainier--${LINUX_VERSION}-r0-p10bmc-${BLD_VERSION}.dtb
> > >
> > > wget
> > > https://jenkins.openbmc.org/view/latest/job/latest-master/label=docker-builder,target=p10bmc/lastStableBuild/artifact/openbmc/build/tmp/deploy/images/p10bmc/fitImage-linux.bin--${LINUX_VERSION}-r0-p10bmc-${BLD_VERSION}.bin
> > >
> > > wget
> > > https://jenkins.openbmc.org/view/latest/job/latest-master/label=docker-builder,target=p10bmc/lastStableBuild/artifact/openbmc/build/tmp/deploy/images/p10bmc/obmc-phosphor-image-p10bmc-${BLD_VERSION}.rootfs.wic.qcow2
> > > qemu-img resize
> > > obmc-phosphor-image-p10bmc-${BLD_VERSION}.rootfs.wic.qcow2 16G
> > >
> > > 3. Run the qemu command as show at the start