search for: yunomae

...induces oops in sg_init_table(). [BUG2] No lock for competition of splice_write. => This induces oops in splice_from_pipe_feed() by bug of any user application. These reports are written in each patch. Changes in V2: - Fix a locking problem for error Thanks! --- Yoshihiro YUNOMAE (2): [BUGFIX] virtio/console: Quit from splice_write if pipe->nrbufs is 0 [BUGFIX] virtio/console: Add pipe_lock/unlock for splice_write drivers/char/virtio_console.c | 23 ++++++++++++++++++++--- 1 file changed, 20 insertions(+), 3 deletions(-) -- Yoshihiro YUNOMAE Software P...

...induces oops in sg_init_table(). [BUG2] No lock for competition of splice_write. => This induces oops in splice_from_pipe_feed() by bug of any user application. These reports are written in each patch. Changes in V2: - Fix a locking problem for error Thanks! --- Yoshihiro YUNOMAE (2): [BUGFIX] virtio/console: Quit from splice_write if pipe->nrbufs is 0 [BUGFIX] virtio/console: Add pipe_lock/unlock for splice_write drivers/char/virtio_console.c | 23 ++++++++++++++++++++--- 1 file changed, 20 insertions(+), 3 deletions(-) -- Yoshihiro YUNOMAE Software P...

...*Just enhancement ideas*** - Support for trace-cmd => done - Support for 9pfs protocol - Support for non-blocking mode in QEMU Thank you, --- Masami Hiramatsu (2): trace-cmd: Use tracing directory to count CPUs trace-cmd: Use TRACE_DIR envrionment variable if defined Yoshihiro YUNOMAE (3): trace-cmd: Use polling function trace-cmd: Add non-blocking option for open() and splice_read() trace-cmd: Support trace-agent of virtio-trace trace-cmd.h | 1 trace-record.c | 41 ++++++++++++++++++++ trace-recorder.c | 112 ++++++++++++++++++++++++++++++++++...

...*Just enhancement ideas*** - Support for trace-cmd => done - Support for 9pfs protocol - Support for non-blocking mode in QEMU Thank you, --- Masami Hiramatsu (2): trace-cmd: Use tracing directory to count CPUs trace-cmd: Use TRACE_DIR envrionment variable if defined Yoshihiro YUNOMAE (3): trace-cmd: Use polling function trace-cmd: Add non-blocking option for open() and splice_read() trace-cmd: Support trace-agent of virtio-trace trace-cmd.h | 1 trace-record.c | 41 ++++++++++++++++++++ trace-recorder.c | 112 ++++++++++++++++++++++++++++++++++...

...e_write. => This induces oops in splice_from_pipe_feed() by bug of any user application. These reports are written in each patch. Changes in V2: - Fix a locking problem for error Changes in V3: - Add Reviewed-by lines and stable@ line in sign-off area Thanks! --- Yoshihiro YUNOMAE (2): [BUGFIX] virtio/console: Quit from splice_write if pipe->nrbufs is 0 [BUGFIX] virtio/console: Add pipe_lock/unlock for splice_write drivers/char/virtio_console.c | 23 ++++++++++++++++++++--- 1 file changed, 20 insertions(+), 3 deletions(-) -- Yoshihiro YUNOMAE Software P...

...e_write. => This induces oops in splice_from_pipe_feed() by bug of any user application. These reports are written in each patch. Changes in V2: - Fix a locking problem for error Changes in V3: - Add Reviewed-by lines and stable@ line in sign-off area Thanks! --- Yoshihiro YUNOMAE (2): [BUGFIX] virtio/console: Quit from splice_write if pipe->nrbufs is 0 [BUGFIX] virtio/console: Add pipe_lock/unlock for splice_write drivers/char/virtio_console.c | 23 ++++++++++++++++++++--- 1 file changed, 20 insertions(+), 3 deletions(-) -- Yoshihiro YUNOMAE Software P...

...onsole: Allocate scatterlist according to the current pipe size ftrace: Allow stealing pages from pipe buffer virtio/console: Wait until the port is ready on splice virtio/console: Add a failback for unstealable pipe buffer virtio/console: Add splice_write support Yoshihiro YUNOMAE (1): tools: Add guest trace agent as a user tool drivers/char/virtio_console.c | 198 ++++++++++++++++++-- kernel/trace/trace.c | 8 - tools/virtio/virtio-trace/Makefile | 14 + tools/virtio/virtio-trace/README | 118 +++++++++...

...onsole: Allocate scatterlist according to the current pipe size ftrace: Allow stealing pages from pipe buffer virtio/console: Wait until the port is ready on splice virtio/console: Add a failback for unstealable pipe buffer virtio/console: Add splice_write support Yoshihiro YUNOMAE (1): tools: Add guest trace agent as a user tool drivers/char/virtio_console.c | 198 ++++++++++++++++++-- kernel/trace/trace.c | 8 - tools/virtio/virtio-trace/Makefile | 14 + tools/virtio/virtio-trace/README | 118 +++++++++...

...onsole: Allocate scatterlist according to the current pipe size ftrace: Allow stealing pages from pipe buffer virtio/console: Wait until the port is ready on splice virtio/console: Add a failback for unstealable pipe buffer virtio/console: Add splice_write support Yoshihiro YUNOMAE (1): tools: Add guest trace agent as a user tool drivers/char/virtio_console.c | 198 ++++++++++++++++++-- kernel/trace/trace.c | 8 - tools/virtio/virtio-trace/Makefile | 14 + tools/virtio/virtio-trace/README | 118 +++++++++...

...onsole: Allocate scatterlist according to the current pipe size ftrace: Allow stealing pages from pipe buffer virtio/console: Wait until the port is ready on splice virtio/console: Add a failback for unstealable pipe buffer virtio/console: Add splice_write support Yoshihiro YUNOMAE (1): tools: Add guest trace agent as a user tool drivers/char/virtio_console.c | 198 ++++++++++++++++++-- kernel/trace/trace.c | 8 - tools/virtio/virtio-trace/Makefile | 14 + tools/virtio/virtio-trace/README | 118 +++++++++...

...ufs. (4) The virtio-console driver tries to touch scatterlist structure sgl in sg_init_table(), but the region is out of bound. To avoid the case, a kernel should check whether pipe->nrbufs is empty or not when splice_write is executed in the virtio-console driver. Signed-off-by: Yoshihiro YUNOMAE <yoshihiro.yunomae.ez at hitachi.com> Cc: Amit Shah <amit.shah at redhat.com> Cc: Arnd Bergmann <arnd at arndb.de> Cc: Greg Kroah-Hartman <gregkh at linuxfoundation.org> --- drivers/char/virtio_console.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/drivers/...

...c 89 ff <ff> 50 18 85 c0 0f 85 aa 00 00 00 48 89 da 4c 89 e6 4c 89 ff 41 RIP [<ffffffff811a6b5f>] splice_from_pipe_feed+0x6f/0x130 RSP <ffff88007b55fd78> CR2: 0000000000000018 ---[ end trace 24572beb7764de59 ]--- V2: Fix a locking problem for error Signed-off-by: Yoshihiro YUNOMAE <yoshihiro.yunomae.ez at hitachi.com> Cc: Amit Shah <amit.shah at redhat.com> Cc: Arnd Bergmann <arnd at arndb.de> Cc: Greg Kroah-Hartman <gregkh at linuxfoundation.org> --- drivers/char/virtio_console.c | 20 +++++++++++++++----- 1 file changed, 15 insertions(+), 5 delet...

On (Fri) 19 Jul 2013 [08:19:27], Yoshihiro YUNOMAE wrote: > Hi, > > This patch set fixes two bugs of splice_write in the virtio-console driver. Oh, and please CC virtualization at lists.linux-foundation.org for any virtio-related patches. Thanks, Amit

On (Fri) 19 Jul 2013 [18:19:51], Yoshihiro YUNOMAE wrote: > Hi, > > This patch set fixes two bugs of splice_write in the virtio-console driver. > > [BUG1] Although pipe->nrbufs is empty, the driver tries to do splice_write. > => This induces oops in sg_init_table(). > > [BUG2] No lock for competition of splic...

On (Mon) 22 Jul 2013 [13:00:43], Yoshihiro YUNOMAE wrote: > Hi, > > This patch set fixes two bugs of splice_write in the virtio-console driver. > > [BUG1] Although pipe->nrbufs is empty, the driver tries to do splice_write. > => This induces oops in sg_init_table(). > > [BUG2] No lock for competition of splic...

On (Fri) 19 Jul 2013 [08:19:27], Yoshihiro YUNOMAE wrote: > Hi, > > This patch set fixes two bugs of splice_write in the virtio-console driver. Oh, and please CC virtualization at lists.linux-foundation.org for any virtio-related patches. Thanks, Amit

...ngqiang Yang <xiaoqiangnk@gmail.com> Yongsul Oh <yongsul96.oh@samsung.com> Yoni Divinsky <yoni.divinsky@ti.com> York Sun <yorksun@freescale.com> YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com> Yoshihiro YUNOMAE <yoshihiro.yunomae.ez@hitachi.com> Yoshinori Sato <ysato@users.sourceforge.jp> YoungJun Cho <yj44.cho@samsung.com> Youquan Song <youquan.song@intel.com> Yu Niiro <yu.niiro@gmail.com> Yu Xu <yuxu@marvell.com> Yuan Jiangli <jlyuan@motorola.com>...

...ngqiang Yang <xiaoqiangnk@gmail.com> Yongsul Oh <yongsul96.oh@samsung.com> Yoni Divinsky <yoni.divinsky@ti.com> York Sun <yorksun@freescale.com> YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com> Yoshihiro YUNOMAE <yoshihiro.yunomae.ez@hitachi.com> Yoshinori Sato <ysato@users.sourceforge.jp> YoungJun Cho <yj44.cho@samsung.com> Youquan Song <youquan.song@intel.com> Yu Niiro <yu.niiro@gmail.com> Yu Xu <yuxu@marvell.com> Yuan Jiangli <jlyuan@motorola.com>...

...ngqiang Yang <xiaoqiangnk@gmail.com> Yongsul Oh <yongsul96.oh@samsung.com> Yoni Divinsky <yoni.divinsky@ti.com> York Sun <yorksun@freescale.com> YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com> Yoshihiro YUNOMAE <yoshihiro.yunomae.ez@hitachi.com> Yoshinori Sato <ysato@users.sourceforge.jp> YoungJun Cho <yj44.cho@samsung.com> Youquan Song <youquan.song@intel.com> Yu Niiro <yu.niiro@gmail.com> Yu Xu <yuxu@marvell.com> Yuan Jiangli <jlyuan@motorola.com>...

...<yongsul96.oh@samsung.com> Yoni Divinsky <yoni.divinsky@ti.com> York Sun <yorksun@freescale.com> YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>dave Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com> Yoshihiro YUNOMAE <yoshihiro.yunomae.ez@hitachi.com> Yoshinori Sato <ysato@users.sourceforge.jp> Younghwan Joo <yhwan.joo@samsung.com> YoungJun Cho <yj44.cho@samsung.com> Youquan Song <youquan.song@intel.com> Yu Niiro <yu.niiro@gmail.com> Yu Xu <yuxu@marvell.com>...