[app-emulation/qemu] version bump
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DIST qemu-2.4.0.1.tar.bz2 25068555 SHA256 ecfe8b88037e41e817d72c460c56c6a0b573d540d6ba38b162d0de4fd22d1bdb SHA512 08eabe92fa9096386ef00f8e9d99eeec1508d15e5a98431e043a729cbaca2d96d6e3afc612e7c4a0fe5a6bba80006276185f1066b4c73105b2ea24b7e9133b84 WHIRLPOOL 1daaec23d6ada6af8bf4902e590fb96375e7149d2f53ff6bf6d8fb39722c182a2d2efcc0d40bee673a8316f621983c512daa54202bb4e632b3a4b09f0268cd09
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DIST qemu-2.4.1.tar.bz2 25087522 SHA256 e3d5cf4c8b1f9129c9c797329a515bfb6b3b1ded0ab8b394c8a316490fe3a177 SHA512 fde32b71a50d888c1055e61f4e6dfc45bb97e8e9ebee490c545965fbdcbd5ffd859fbf20648abed1f4fa9fcc5635e9b22e1829bbe802fc8aaf989d6013235917 WHIRLPOOL a698cfa5d2d138eeddb3c6bea57e3b89ca5d47165c04ed1cfd66a81647ac59cbdd594c919abef67bf198278da1160c5b9f3a0da84cd73827f3eb19a6e6f05436
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@ -1,146 +0,0 @@
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https://bugs.gentoo.org/560422
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From d9033e1d3aa666c5071580617a57bd853c5d794a Mon Sep 17 00:00:00 2001
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From: John Snow <jsnow@redhat.com>
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Date: Thu, 17 Sep 2015 14:17:05 -0400
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Subject: [PATCH] ide: fix ATAPI command permissions
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We're a little too lenient with what we'll let an ATAPI drive handle.
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Clamp down on the IDE command execution table to remove CD_OK permissions
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from commands that are not and have never been ATAPI commands.
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For ATAPI command validity, please see:
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- ATA4 Section 6.5 ("PACKET Command feature set")
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- ATA8/ACS Section 4.3 ("The PACKET feature set")
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- ACS3 Section 4.3 ("The PACKET feature set")
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ACS3 has a historical command validity table in Table B.4
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("Historical Command Assignments") that can be referenced to find when
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a command was introduced, deprecated, obsoleted, etc.
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The only reference for ATAPI command validity is by checking that
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version's PACKET feature set section.
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ATAPI was introduced by T13 into ATA4, all commands retired prior to ATA4
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therefore are assumed to have never been ATAPI commands.
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Mandatory commands, as listed in ATA8-ACS3, are:
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- DEVICE RESET
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- EXECUTE DEVICE DIAGNOSTIC
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- IDENTIFY DEVICE
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- IDENTIFY PACKET DEVICE
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- NOP
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- PACKET
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- READ SECTOR(S)
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- SET FEATURES
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Optional commands as listed in ATA8-ACS3, are:
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- FLUSH CACHE
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- READ LOG DMA EXT
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- READ LOG EXT
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- WRITE LOG DMA EXT
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- WRITE LOG EXT
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All other commands are illegal to send to an ATAPI device and should
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be rejected by the device.
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CD_OK removal justifications:
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0x06 WIN_DSM Defined in ACS2. Not valid for ATAPI.
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0x21 WIN_READ_ONCE Retired in ATA5. Not ATAPI in ATA4.
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0x94 WIN_STANDBYNOW2 Retired in ATA4. Did not coexist with ATAPI.
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0x95 WIN_IDLEIMMEDIATE2 Retired in ATA4. Did not coexist with ATAPI.
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0x96 WIN_STANDBY2 Retired in ATA4. Did not coexist with ATAPI.
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0x97 WIN_SETIDLE2 Retired in ATA4. Did not coexist with ATAPI.
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0x98 WIN_CHECKPOWERMODE2 Retired in ATA4. Did not coexist with ATAPI.
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0x99 WIN_SLEEPNOW2 Retired in ATA4. Did not coexist with ATAPI.
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0xE0 WIN_STANDBYNOW1 Not part of ATAPI in ATA4, ACS or ACS3.
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0xE1 WIN_IDLEIMMDIATE Not part of ATAPI in ATA4, ACS or ACS3.
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0xE2 WIN_STANDBY Not part of ATAPI in ATA4, ACS or ACS3.
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0xE3 WIN_SETIDLE1 Not part of ATAPI in ATA4, ACS or ACS3.
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0xE4 WIN_CHECKPOWERMODE1 Not part of ATAPI in ATA4, ACS or ACS3.
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0xE5 WIN_SLEEPNOW1 Not part of ATAPI in ATA4, ACS or ACS3.
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0xF8 WIN_READ_NATIVE_MAX Obsoleted in ACS3. Not ATAPI in ATA4 or ACS.
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This patch fixes a divide by zero fault that can be caused by sending
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the WIN_READ_NATIVE_MAX command to an ATAPI drive, which causes it to
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attempt to use zeroed CHS values to perform sector arithmetic.
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Reported-by: Qinghao Tang <luodalongde@gmail.com>
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Signed-off-by: John Snow <jsnow@redhat.com>
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Reviewed-by: Markus Armbruster <armbru@redhat.com>
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Message-id: 1441816082-21031-1-git-send-email-jsnow@redhat.com
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CC: qemu-stable@nongnu.org
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---
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hw/ide/core.c | 30 +++++++++++++++---------------
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1 file changed, 15 insertions(+), 15 deletions(-)
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diff --git a/hw/ide/core.c b/hw/ide/core.c
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index 8ba04df..1cc6945 100644
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--- a/hw/ide/core.c
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+++ b/hw/ide/core.c
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@@ -1746,11 +1746,11 @@ static const struct {
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} ide_cmd_table[0x100] = {
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/* NOP not implemented, mandatory for CD */
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[CFA_REQ_EXT_ERROR_CODE] = { cmd_cfa_req_ext_error_code, CFA_OK },
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- [WIN_DSM] = { cmd_data_set_management, ALL_OK },
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+ [WIN_DSM] = { cmd_data_set_management, HD_CFA_OK },
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[WIN_DEVICE_RESET] = { cmd_device_reset, CD_OK },
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[WIN_RECAL] = { cmd_nop, HD_CFA_OK | SET_DSC},
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[WIN_READ] = { cmd_read_pio, ALL_OK },
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- [WIN_READ_ONCE] = { cmd_read_pio, ALL_OK },
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+ [WIN_READ_ONCE] = { cmd_read_pio, HD_CFA_OK },
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[WIN_READ_EXT] = { cmd_read_pio, HD_CFA_OK },
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[WIN_READDMA_EXT] = { cmd_read_dma, HD_CFA_OK },
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[WIN_READ_NATIVE_MAX_EXT] = { cmd_read_native_max, HD_CFA_OK | SET_DSC },
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@@ -1769,12 +1769,12 @@ static const struct {
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[CFA_TRANSLATE_SECTOR] = { cmd_cfa_translate_sector, CFA_OK },
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[WIN_DIAGNOSE] = { cmd_exec_dev_diagnostic, ALL_OK },
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[WIN_SPECIFY] = { cmd_nop, HD_CFA_OK | SET_DSC },
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- [WIN_STANDBYNOW2] = { cmd_nop, ALL_OK },
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- [WIN_IDLEIMMEDIATE2] = { cmd_nop, ALL_OK },
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- [WIN_STANDBY2] = { cmd_nop, ALL_OK },
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- [WIN_SETIDLE2] = { cmd_nop, ALL_OK },
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- [WIN_CHECKPOWERMODE2] = { cmd_check_power_mode, ALL_OK | SET_DSC },
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- [WIN_SLEEPNOW2] = { cmd_nop, ALL_OK },
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+ [WIN_STANDBYNOW2] = { cmd_nop, HD_CFA_OK },
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+ [WIN_IDLEIMMEDIATE2] = { cmd_nop, HD_CFA_OK },
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+ [WIN_STANDBY2] = { cmd_nop, HD_CFA_OK },
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+ [WIN_SETIDLE2] = { cmd_nop, HD_CFA_OK },
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+ [WIN_CHECKPOWERMODE2] = { cmd_check_power_mode, HD_CFA_OK | SET_DSC },
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+ [WIN_SLEEPNOW2] = { cmd_nop, HD_CFA_OK },
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[WIN_PACKETCMD] = { cmd_packet, CD_OK },
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[WIN_PIDENTIFY] = { cmd_identify_packet, CD_OK },
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[WIN_SMART] = { cmd_smart, HD_CFA_OK | SET_DSC },
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@@ -1788,19 +1788,19 @@ static const struct {
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[WIN_WRITEDMA] = { cmd_write_dma, HD_CFA_OK },
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[WIN_WRITEDMA_ONCE] = { cmd_write_dma, HD_CFA_OK },
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[CFA_WRITE_MULTI_WO_ERASE] = { cmd_write_multiple, CFA_OK },
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- [WIN_STANDBYNOW1] = { cmd_nop, ALL_OK },
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- [WIN_IDLEIMMEDIATE] = { cmd_nop, ALL_OK },
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- [WIN_STANDBY] = { cmd_nop, ALL_OK },
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- [WIN_SETIDLE1] = { cmd_nop, ALL_OK },
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- [WIN_CHECKPOWERMODE1] = { cmd_check_power_mode, ALL_OK | SET_DSC },
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- [WIN_SLEEPNOW1] = { cmd_nop, ALL_OK },
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+ [WIN_STANDBYNOW1] = { cmd_nop, HD_CFA_OK },
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+ [WIN_IDLEIMMEDIATE] = { cmd_nop, HD_CFA_OK },
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+ [WIN_STANDBY] = { cmd_nop, HD_CFA_OK },
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+ [WIN_SETIDLE1] = { cmd_nop, HD_CFA_OK },
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+ [WIN_CHECKPOWERMODE1] = { cmd_check_power_mode, HD_CFA_OK | SET_DSC },
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+ [WIN_SLEEPNOW1] = { cmd_nop, HD_CFA_OK },
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[WIN_FLUSH_CACHE] = { cmd_flush_cache, ALL_OK },
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[WIN_FLUSH_CACHE_EXT] = { cmd_flush_cache, HD_CFA_OK },
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[WIN_IDENTIFY] = { cmd_identify, ALL_OK },
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[WIN_SETFEATURES] = { cmd_set_features, ALL_OK | SET_DSC },
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[IBM_SENSE_CONDITION] = { cmd_ibm_sense_condition, CFA_OK | SET_DSC },
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[CFA_WEAR_LEVEL] = { cmd_cfa_erase_sectors, HD_CFA_OK | SET_DSC },
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- [WIN_READ_NATIVE_MAX] = { cmd_read_native_max, ALL_OK | SET_DSC },
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+ [WIN_READ_NATIVE_MAX] = { cmd_read_native_max, HD_CFA_OK | SET_DSC },
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};
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static bool ide_cmd_permitted(IDEState *s, uint32_t cmd)
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--
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2.6.0.rc2.230.g3dd15c0
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@ -1,58 +0,0 @@
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https://bugs.gentoo.org/560760
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From ce317461573bac12b10d67699b4ddf1f97cf066c Mon Sep 17 00:00:00 2001
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From: Jason Wang <jasowang@redhat.com>
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Date: Fri, 25 Sep 2015 13:21:28 +0800
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Subject: [PATCH 1/3] virtio: introduce virtqueue_unmap_sg()
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Factor out sg unmapping logic. This will be reused by the patch that
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can discard descriptor.
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Cc: Michael S. Tsirkin <mst@redhat.com>
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Cc: Andrew James <andrew.james@hpe.com>
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Signed-off-by: Jason Wang <jasowang@redhat.com>
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Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
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Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
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---
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hw/virtio/virtio.c | 14 ++++++++++----
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1 file changed, 10 insertions(+), 4 deletions(-)
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diff --git a/hw/virtio/virtio.c b/hw/virtio/virtio.c
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index 7504f8b..6f2b96c 100644
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--- a/hw/virtio/virtio.c
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+++ b/hw/virtio/virtio.c
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@@ -244,14 +244,12 @@ int virtio_queue_empty(VirtQueue *vq)
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return vring_avail_idx(vq) == vq->last_avail_idx;
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}
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-void virtqueue_fill(VirtQueue *vq, const VirtQueueElement *elem,
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- unsigned int len, unsigned int idx)
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+static void virtqueue_unmap_sg(VirtQueue *vq, const VirtQueueElement *elem,
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+ unsigned int len)
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{
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unsigned int offset;
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int i;
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- trace_virtqueue_fill(vq, elem, len, idx);
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-
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offset = 0;
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for (i = 0; i < elem->in_num; i++) {
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size_t size = MIN(len - offset, elem->in_sg[i].iov_len);
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@@ -267,6 +265,14 @@ void virtqueue_fill(VirtQueue *vq, const VirtQueueElement *elem,
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cpu_physical_memory_unmap(elem->out_sg[i].iov_base,
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elem->out_sg[i].iov_len,
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0, elem->out_sg[i].iov_len);
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+}
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+
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+void virtqueue_fill(VirtQueue *vq, const VirtQueueElement *elem,
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+ unsigned int len, unsigned int idx)
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+{
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+ trace_virtqueue_fill(vq, elem, len, idx);
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+
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+ virtqueue_unmap_sg(vq, elem, len);
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idx = (idx + vring_used_idx(vq)) % vq->vring.num;
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--
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2.6.0.rc2.230.g3dd15c0
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@ -1,54 +0,0 @@
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https://bugs.gentoo.org/560760
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From 29b9f5efd78ae0f9cc02dd169b6e80d2c404bade Mon Sep 17 00:00:00 2001
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From: Jason Wang <jasowang@redhat.com>
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Date: Fri, 25 Sep 2015 13:21:29 +0800
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Subject: [PATCH 2/3] virtio: introduce virtqueue_discard()
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This patch introduces virtqueue_discard() to discard a descriptor and
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unmap the sgs. This will be used by the patch that will discard
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descriptor when packet is truncated.
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Cc: Michael S. Tsirkin <mst@redhat.com>
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Signed-off-by: Jason Wang <jasowang@redhat.com>
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Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
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Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
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---
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hw/virtio/virtio.c | 7 +++++++
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include/hw/virtio/virtio.h | 2 ++
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2 files changed, 9 insertions(+)
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diff --git a/hw/virtio/virtio.c b/hw/virtio/virtio.c
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index 6f2b96c..d0bc72e 100644
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--- a/hw/virtio/virtio.c
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+++ b/hw/virtio/virtio.c
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@@ -267,6 +267,13 @@ static void virtqueue_unmap_sg(VirtQueue *vq, const VirtQueueElement *elem,
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0, elem->out_sg[i].iov_len);
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}
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+void virtqueue_discard(VirtQueue *vq, const VirtQueueElement *elem,
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+ unsigned int len)
|
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+{
|
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+ vq->last_avail_idx--;
|
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+ virtqueue_unmap_sg(vq, elem, len);
|
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+}
|
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+
|
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void virtqueue_fill(VirtQueue *vq, const VirtQueueElement *elem,
|
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unsigned int len, unsigned int idx)
|
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{
|
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diff --git a/include/hw/virtio/virtio.h b/include/hw/virtio/virtio.h
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index 6201ee8..9d09115 100644
|
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--- a/include/hw/virtio/virtio.h
|
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+++ b/include/hw/virtio/virtio.h
|
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@@ -146,6 +146,8 @@ void virtio_del_queue(VirtIODevice *vdev, int n);
|
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void virtqueue_push(VirtQueue *vq, const VirtQueueElement *elem,
|
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unsigned int len);
|
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void virtqueue_flush(VirtQueue *vq, unsigned int count);
|
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+void virtqueue_discard(VirtQueue *vq, const VirtQueueElement *elem,
|
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+ unsigned int len);
|
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void virtqueue_fill(VirtQueue *vq, const VirtQueueElement *elem,
|
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unsigned int len, unsigned int idx);
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--
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2.6.0.rc2.230.g3dd15c0
|
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|
@ -1,47 +0,0 @@
|
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https://bugs.gentoo.org/560760
|
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|
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From 0cf33fb6b49a19de32859e2cdc6021334f448fb3 Mon Sep 17 00:00:00 2001
|
||||
From: Jason Wang <jasowang@redhat.com>
|
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Date: Fri, 25 Sep 2015 13:21:30 +0800
|
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Subject: [PATCH 3/3] virtio-net: correctly drop truncated packets
|
||||
|
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When packet is truncated during receiving, we drop the packets but
|
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neither discard the descriptor nor add and signal used
|
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descriptor. This will lead several issues:
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|
||||
- sg mappings are leaked
|
||||
- rx will be stalled if a lots of packets were truncated
|
||||
|
||||
In order to be consistent with vhost, fix by discarding the descriptor
|
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in this case.
|
||||
|
||||
Cc: Michael S. Tsirkin <mst@redhat.com>
|
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Signed-off-by: Jason Wang <jasowang@redhat.com>
|
||||
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
|
||||
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
|
||||
---
|
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hw/net/virtio-net.c | 8 +-------
|
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1 file changed, 1 insertion(+), 7 deletions(-)
|
||||
|
||||
diff --git a/hw/net/virtio-net.c b/hw/net/virtio-net.c
|
||||
index d388c55..a877614 100644
|
||||
--- a/hw/net/virtio-net.c
|
||||
+++ b/hw/net/virtio-net.c
|
||||
@@ -1094,13 +1094,7 @@ static ssize_t virtio_net_receive(NetClientState *nc, const uint8_t *buf, size_t
|
||||
* must have consumed the complete packet.
|
||||
* Otherwise, drop it. */
|
||||
if (!n->mergeable_rx_bufs && offset < size) {
|
||||
-#if 0
|
||||
- error_report("virtio-net truncated non-mergeable packet: "
|
||||
- "i %zd mergeable %d offset %zd, size %zd, "
|
||||
- "guest hdr len %zd, host hdr len %zd",
|
||||
- i, n->mergeable_rx_bufs,
|
||||
- offset, size, n->guest_hdr_len, n->host_hdr_len);
|
||||
-#endif
|
||||
+ virtqueue_discard(q->rx_vq, &elem, total);
|
||||
return size;
|
||||
}
|
||||
|
||||
--
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||||
2.6.0.rc2.230.g3dd15c0
|
||||
|
@ -1,124 +0,0 @@
|
||||
https://bugs.gentoo.org/558396
|
||||
|
||||
fix from upstream git
|
||||
|
||||
From e424aff5f307227b1c2512bbb8ece891bb895cef Mon Sep 17 00:00:00 2001
|
||||
From: Kevin Wolf <kwolf@redhat.com>
|
||||
Date: Thu, 13 Aug 2015 10:41:50 +0200
|
||||
Subject: [PATCH] mirror: Fix coroutine reentrance
|
||||
|
||||
This fixes a regression introduced by commit dcfb3beb ("mirror: Do zero
|
||||
write on target if sectors not allocated"), which was reported to cause
|
||||
aborts with the message "Co-routine re-entered recursively".
|
||||
|
||||
The cause for this bug is the following code in mirror_iteration_done():
|
||||
|
||||
if (s->common.busy) {
|
||||
qemu_coroutine_enter(s->common.co, NULL);
|
||||
}
|
||||
|
||||
This has always been ugly because - unlike most places that reenter - it
|
||||
doesn't have a specific yield that it pairs with, but is more
|
||||
uncontrolled. What we really mean here is "reenter the coroutine if
|
||||
it's in one of the four explicit yields in mirror.c".
|
||||
|
||||
This used to be equivalent with s->common.busy because neither
|
||||
mirror_run() nor mirror_iteration() call any function that could yield.
|
||||
However since commit dcfb3beb this doesn't hold true any more:
|
||||
bdrv_get_block_status_above() can yield.
|
||||
|
||||
So what happens is that bdrv_get_block_status_above() wants to take a
|
||||
lock that is already held, so it adds itself to the queue of waiting
|
||||
coroutines and yields. Instead of being woken up by the unlock function,
|
||||
however, it gets woken up by mirror_iteration_done(), which is obviously
|
||||
wrong.
|
||||
|
||||
In most cases the code actually happens to cope fairly well with such
|
||||
cases, but in this specific case, the unlock must already have scheduled
|
||||
the coroutine for wakeup when mirror_iteration_done() reentered it. And
|
||||
then the coroutine happened to process the scheduled restarts and tried
|
||||
to reenter itself recursively.
|
||||
|
||||
This patch fixes the problem by pairing the reenter in
|
||||
mirror_iteration_done() with specific yields instead of abusing
|
||||
s->common.busy.
|
||||
|
||||
Cc: qemu-stable@nongnu.org
|
||||
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
|
||||
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
|
||||
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
|
||||
Reviewed-by: Jeff Cody <jcody@redhat.com>
|
||||
Message-id: 1439455310-11263-1-git-send-email-kwolf@redhat.com
|
||||
Signed-off-by: Jeff Cody <jcody@redhat.com>
|
||||
---
|
||||
block/mirror.c | 15 ++++++++++-----
|
||||
1 file changed, 10 insertions(+), 5 deletions(-)
|
||||
|
||||
diff --git a/block/mirror.c b/block/mirror.c
|
||||
index 0841964..9474443 100644
|
||||
--- a/block/mirror.c
|
||||
+++ b/block/mirror.c
|
||||
@@ -60,6 +60,7 @@ typedef struct MirrorBlockJob {
|
||||
int sectors_in_flight;
|
||||
int ret;
|
||||
bool unmap;
|
||||
+ bool waiting_for_io;
|
||||
} MirrorBlockJob;
|
||||
|
||||
typedef struct MirrorOp {
|
||||
@@ -114,11 +115,7 @@ static void mirror_iteration_done(MirrorOp *op, int ret)
|
||||
qemu_iovec_destroy(&op->qiov);
|
||||
g_slice_free(MirrorOp, op);
|
||||
|
||||
- /* Enter coroutine when it is not sleeping. The coroutine sleeps to
|
||||
- * rate-limit itself. The coroutine will eventually resume since there is
|
||||
- * a sleep timeout so don't wake it early.
|
||||
- */
|
||||
- if (s->common.busy) {
|
||||
+ if (s->waiting_for_io) {
|
||||
qemu_coroutine_enter(s->common.co, NULL);
|
||||
}
|
||||
}
|
||||
@@ -203,7 +200,9 @@ static uint64_t coroutine_fn mirror_iteration(MirrorBlockJob *s)
|
||||
/* Wait for I/O to this cluster (from a previous iteration) to be done. */
|
||||
while (test_bit(next_chunk, s->in_flight_bitmap)) {
|
||||
trace_mirror_yield_in_flight(s, sector_num, s->in_flight);
|
||||
+ s->waiting_for_io = true;
|
||||
qemu_coroutine_yield();
|
||||
+ s->waiting_for_io = false;
|
||||
}
|
||||
|
||||
do {
|
||||
@@ -239,7 +238,9 @@ static uint64_t coroutine_fn mirror_iteration(MirrorBlockJob *s)
|
||||
*/
|
||||
while (nb_chunks == 0 && s->buf_free_count < added_chunks) {
|
||||
trace_mirror_yield_buf_busy(s, nb_chunks, s->in_flight);
|
||||
+ s->waiting_for_io = true;
|
||||
qemu_coroutine_yield();
|
||||
+ s->waiting_for_io = false;
|
||||
}
|
||||
if (s->buf_free_count < nb_chunks + added_chunks) {
|
||||
trace_mirror_break_buf_busy(s, nb_chunks, s->in_flight);
|
||||
@@ -337,7 +338,9 @@ static void mirror_free_init(MirrorBlockJob *s)
|
||||
static void mirror_drain(MirrorBlockJob *s)
|
||||
{
|
||||
while (s->in_flight > 0) {
|
||||
+ s->waiting_for_io = true;
|
||||
qemu_coroutine_yield();
|
||||
+ s->waiting_for_io = false;
|
||||
}
|
||||
}
|
||||
|
||||
@@ -510,7 +513,9 @@ static void coroutine_fn mirror_run(void *opaque)
|
||||
if (s->in_flight == MAX_IN_FLIGHT || s->buf_free_count == 0 ||
|
||||
(cnt == 0 && s->in_flight > 0)) {
|
||||
trace_mirror_yield(s, s->in_flight, s->buf_free_count, cnt);
|
||||
+ s->waiting_for_io = true;
|
||||
qemu_coroutine_yield();
|
||||
+ s->waiting_for_io = false;
|
||||
continue;
|
||||
} else if (cnt != 0) {
|
||||
delay_ns = mirror_iteration(s);
|
||||
--
|
||||
2.5.0
|
||||
|
@ -1,39 +0,0 @@
|
||||
https://bugs.gentoo.org/559656
|
||||
|
||||
https://lists.gnu.org/archive/html/qemu-devel/2015-09/msg01199.html
|
||||
|
||||
From: Stefan Hajnoczi <stefanha@redhat.com>
|
||||
Subject: [PATCH] e1000: Avoid infinite loop in processing transmit descriptor
|
||||
Newsgroups: gmane.comp.emulators.qemu
|
||||
Date: 2015-09-04 16:21:06 GMT (2 days, 12 hours and 51 minutes ago)
|
||||
From: P J P <pjp@fedoraproject.org>
|
||||
|
||||
While processing transmit descriptors, it could lead to an infinite
|
||||
loop if 'bytes' was to become zero; Add a check to avoid it.
|
||||
|
||||
[The guest can force 'bytes' to 0 by setting the hdr_len and mss
|
||||
descriptor fields to 0.
|
||||
--Stefan]
|
||||
|
||||
Signed-off-by: P J P <pjp@fedoraproject.org>
|
||||
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
|
||||
---
|
||||
hw/net/e1000.c | 3 ++-
|
||||
1 file changed, 2 insertions(+), 1 deletion(-)
|
||||
|
||||
diff --git a/hw/net/e1000.c b/hw/net/e1000.c
|
||||
index 5c6bcd0..09c9e9d 100644
|
||||
--- a/hw/net/e1000.c
|
||||
+++ b/hw/net/e1000.c
|
||||
@@ -740,7 +740,8 @@ process_tx_desc(E1000State *s, struct e1000_tx_desc *dp)
|
||||
memmove(tp->data, tp->header, tp->hdr_len);
|
||||
tp->size = tp->hdr_len;
|
||||
}
|
||||
- } while (split_size -= bytes);
|
||||
+ split_size -= bytes;
|
||||
+ } while (bytes && split_size);
|
||||
} else if (!tp->tse && tp->cptse) {
|
||||
// context descriptor TSE is not set, while data descriptor TSE is set
|
||||
DBGOUT(TXERR, "TCP segmentation error\n");
|
||||
--
|
||||
2.4.3
|
@ -303,18 +303,11 @@ src_prepare() {
|
||||
use nls || rm -f po/*.po
|
||||
|
||||
epatch "${FILESDIR}"/qemu-1.7.0-cflags.patch
|
||||
epatch "${FILESDIR}"/${PN}-2.4.0-block-mirror-crash.patch #558396
|
||||
epatch "${FILESDIR}"/${PN}-2.4.0-CVE-2015-7295-{1,2,3}.patch #560760
|
||||
epatch "${FILESDIR}"/${PN}-2.4.0-CVE-2015-6855.patch #560422
|
||||
epatch "${FILESDIR}"/${PN}-2.4-mips-* #563162
|
||||
[[ -n ${BACKPORTS} ]] && \
|
||||
EPATCH_FORCE=yes EPATCH_SUFFIX="patch" EPATCH_SOURCE="${S}/patches" \
|
||||
epatch
|
||||
|
||||
# MIPS specific fixes. Bug #563162
|
||||
for x in "${FILESDIR}"/${PN}-2.4-mips-*; do
|
||||
epatch "${x}"
|
||||
done
|
||||
|
||||
# Fix ld and objcopy being called directly
|
||||
tc-export AR LD OBJCOPY
|
||||
|
Loading…
Reference in New Issue
Block a user