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[PATCH openEuler-1.0-LTS v2] scsi: sd: Fix sd_do_mode_sense() buffer length handling
by Li Nan 10 May '24

10 May '24

From: Damien Le Moal <damien.lemoal(a)wdc.com> mainline inclusion from mainline-v5.16-rc1 commit c749301ebee82eb5e97dec14b6ab31a4aabe37a6 category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/I9FNFK CVE: CVE-2021-47182 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?… -------------------------------- For devices that explicitly asked for MODE SENSE(10) use, make sure that scsi_mode_sense() is called with a buffer of at least 8 bytes so that the sense header fits. Link: https://lore.kernel.org/r/20210820070255.682775-4-damien.lemoal@wdc.com Signed-off-by: Damien Le Moal <damien.lemoal(a)wdc.com> Signed-off-by: Martin K. Petersen <martin.petersen(a)oracle.com> Fixes: 907ea672e30b ("scsi: core: Fix scsi_mode_sense() buffer length handling") Conflicts: drivers/scsi/sd.c [ Mianline commit 0610959fbbca ("scsi: sd: Allow user to configure command retries") use 'sdkp->device' intead of 'sdp'. ] Signed-off-by: Li Nan <linan122(a)huawei.com> --- drivers/scsi/sd.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/drivers/scsi/sd.c b/drivers/scsi/sd.c index 45d6174d3458..f618726bbe70 100644 --- a/drivers/scsi/sd.c +++ b/drivers/scsi/sd.c @@ -2612,6 +2612,13 @@ sd_do_mode_sense(struct scsi_device *sdp, int dbd, int modepage, unsigned char *buffer, int len, struct scsi_mode_data *data, struct scsi_sense_hdr *sshdr) { + /* + * If we must use MODE SENSE(10), make sure that the buffer length + * is at least 8 bytes so that the mode sense header fits. + */ + if (sdp->use_10_for_ms && len < 8) + len = 8; + return scsi_mode_sense(sdp, dbd, modepage, buffer, len, SD_TIMEOUT, SD_MAX_RETRIES, data, sshdr); -- 2.39.2

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[PATCH openEuler-1.0-LTS] scsi: sd: Fix sd_do_mode_sense() buffer length handling
by Li Nan 10 May '24

10 May '24

From: Damien Le Moal <damien.lemoal(a)wdc.com> mainline inclusion from mainline-v5.16-rc1 commit c749301ebee82eb5e97dec14b6ab31a4aabe37a6 category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/I9FNFK CVE: CVE-2021-47182 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?… -------------------------------- For devices that explicitly asked for MODE SENSE(10) use, make sure that scsi_mode_sense() is called with a buffer of at least 8 bytes so that the sense header fits. Link: https://lore.kernel.org/r/20210820070255.682775-4-damien.lemoal@wdc.com Signed-off-by: Damien Le Moal <damien.lemoal(a)wdc.com> Signed-off-by: Martin K. Petersen <martin.petersen(a)oracle.com> Fixes: 907ea672e30b ("scsi: core: Fix scsi_mode_sense() buffer length handling") Conflicts: drivers/scsi/sd.c [ Mianline commit 0610959fbbca ("scsi: sd: Allow user to configure command retries") changed context. ] Signed-off-by: Li Nan <linan122(a)huawei.com> --- drivers/scsi/sd.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/drivers/scsi/sd.c b/drivers/scsi/sd.c index 45d6174d3458..8d3f8ac2d1ce 100644 --- a/drivers/scsi/sd.c +++ b/drivers/scsi/sd.c @@ -2612,6 +2612,13 @@ sd_do_mode_sense(struct scsi_device *sdp, int dbd, int modepage, unsigned char *buffer, int len, struct scsi_mode_data *data, struct scsi_sense_hdr *sshdr) { + /* + * If we must use MODE SENSE(10), make sure that the buffer length + * is at least 8 bytes so that the mode sense header fits. + */ + if (sdkp->device->use_10_for_ms && len < 8) + len = 8; + return scsi_mode_sense(sdp, dbd, modepage, buffer, len, SD_TIMEOUT, SD_MAX_RETRIES, data, sshdr); -- 2.39.2

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[PATCH OLK-5.10] scsi: sd: Fix sd_do_mode_sense() buffer length handling
by Li Nan 10 May '24

10 May '24

From: Damien Le Moal <damien.lemoal(a)wdc.com> mainline inclusion from mainline-v5.16-rc1 commit c749301ebee82eb5e97dec14b6ab31a4aabe37a6 category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/I9FNFK CVE: CVE-2021-47182 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?… -------------------------------- For devices that explicitly asked for MODE SENSE(10) use, make sure that scsi_mode_sense() is called with a buffer of at least 8 bytes so that the sense header fits. Link: https://lore.kernel.org/r/20210820070255.682775-4-damien.lemoal@wdc.com Signed-off-by: Damien Le Moal <damien.lemoal(a)wdc.com> Signed-off-by: Martin K. Petersen <martin.petersen(a)oracle.com> Fixes: 46708639bcd8 ("[Backport] scsi: core: Fix scsi_mode_sense() buffer length handling") Signed-off-by: Li Nan <linan122(a)huawei.com> --- drivers/scsi/sd.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/drivers/scsi/sd.c b/drivers/scsi/sd.c index 5385805e06a8..595891482986 100644 --- a/drivers/scsi/sd.c +++ b/drivers/scsi/sd.c @@ -2657,6 +2657,13 @@ sd_do_mode_sense(struct scsi_disk *sdkp, int dbd, int modepage, unsigned char *buffer, int len, struct scsi_mode_data *data, struct scsi_sense_hdr *sshdr) { + /* + * If we must use MODE SENSE(10), make sure that the buffer length + * is at least 8 bytes so that the mode sense header fits. + */ + if (sdkp->device->use_10_for_ms && len < 8) + len = 8; + return scsi_mode_sense(sdkp->device, dbd, modepage, buffer, len, SD_TIMEOUT, sdkp->max_retries, data, sshdr); -- 2.39.2

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[PATCH openEuler-1.0-LTS] scsi: sd: Fix sd_do_mode_sense() buffer length handling
by Li Nan 10 May '24

10 May '24

From: Damien Le Moal <damien.lemoal(a)wdc.com> mainline inclusion from mainline-v5.16-rc1 commit c749301ebee82eb5e97dec14b6ab31a4aabe37a6 category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/I9FNFK CVE: CVE-2021-47182 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?… -------------------------------- For devices that explicitly asked for MODE SENSE(10) use, make sure that scsi_mode_sense() is called with a buffer of at least 8 bytes so that the sense header fits. Link: https://lore.kernel.org/r/20210820070255.682775-4-damien.lemoal@wdc.com Signed-off-by: Damien Le Moal <damien.lemoal(a)wdc.com> Signed-off-by: Martin K. Petersen <martin.petersen(a)oracle.com> Fixes: 907ea672e30b ("scsi: core: Fix scsi_mode_sense() buffer length handling") Conflicts: drivers/scsi/sd.c [ Mianline commit 0610959fbbca ("scsi: sd: Allow user to configure command retries") changed context. ] Signed-off-by: Li Nan <linan122(a)huawei.com> --- drivers/scsi/sd.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/drivers/scsi/sd.c b/drivers/scsi/sd.c index 45d6174d3458..8d3f8ac2d1ce 100644 --- a/drivers/scsi/sd.c +++ b/drivers/scsi/sd.c @@ -2612,6 +2612,13 @@ sd_do_mode_sense(struct scsi_device *sdp, int dbd, int modepage, unsigned char *buffer, int len, struct scsi_mode_data *data, struct scsi_sense_hdr *sshdr) { + /* + * If we must use MODE SENSE(10), make sure that the buffer length + * is at least 8 bytes so that the mode sense header fits. + */ + if (sdkp->device->use_10_for_ms && len < 8) + len = 8; + return scsi_mode_sense(sdp, dbd, modepage, buffer, len, SD_TIMEOUT, SD_MAX_RETRIES, data, sshdr); -- 2.39.2

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[PATCH OLK-6.6 1/2] netfilter: bridge: confirm multicast packets before passing them up the stack
by Ziyang Xuan 10 May '24

10 May '24

From: Florian Westphal <fw(a)strlen.de> stable inclusion from stable-v6.6.21 commit 80cd0487f630b5382734997c3e5e3003a77db315 category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/I9MPZ8 CVE: NA Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id… -------------------------------- [ Upstream commit 62e7151ae3eb465e0ab52a20c941ff33bb6332e9 ] conntrack nf_confirm logic cannot handle cloned skbs referencing the same nf_conn entry, which will happen for multicast (broadcast) frames on bridges. Example: macvlan0 | br0 / \ ethX ethY ethX (or Y) receives a L2 multicast or broadcast packet containing an IP packet, flow is not yet in conntrack table. 1. skb passes through bridge and fake-ip (br_netfilter)Prerouting. -> skb->_nfct now references a unconfirmed entry 2. skb is broad/mcast packet. bridge now passes clones out on each bridge interface. 3. skb gets passed up the stack. 4. In macvlan case, macvlan driver retains clone(s) of the mcast skb and schedules a work queue to send them out on the lower devices. The clone skb->_nfct is not a copy, it is the same entry as the original skb. The macvlan rx handler then returns RX_HANDLER_PASS. 5. Normal conntrack hooks (in NF_INET_LOCAL_IN) confirm the orig skb. The Macvlan broadcast worker and normal confirm path will race. This race will not happen if step 2 already confirmed a clone. In that case later steps perform skb_clone() with skb->_nfct already confirmed (in hash table). This works fine. But such confirmation won't happen when eb/ip/nftables rules dropped the packets before they reached the nf_confirm step in postrouting. Pablo points out that nf_conntrack_bridge doesn't allow use of stateful nat, so we can safely discard the nf_conn entry and let inet call conntrack again. This doesn't work for bridge netfilter: skb could have a nat transformation. Also bridge nf prevents re-invocation of inet prerouting via 'sabotage_in' hook. Work around this problem by explicit confirmation of the entry at LOCAL_IN time, before upper layer has a chance to clone the unconfirmed entry. The downside is that this disables NAT and conntrack helpers. Alternative fix would be to add locking to all code parts that deal with unconfirmed packets, but even if that could be done in a sane way this opens up other problems, for example: -m physdev --physdev-out eth0 -j SNAT --snat-to 1.2.3.4 -m physdev --physdev-out eth1 -j SNAT --snat-to 1.2.3.5 For multicast case, only one of such conflicting mappings will be created, conntrack only handles 1:1 NAT mappings. Users should set create a setup that explicitly marks such traffic NOTRACK (conntrack bypass) to avoid this, but we cannot auto-bypass them, ruleset might have accept rules for untracked traffic already, so user-visible behaviour would change. Suggested-by: Pablo Neira Ayuso <pablo(a)netfilter.org> Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2") Closes: https://bugzilla.kernel.org/show_bug.cgi?id=217777 Signed-off-by: Florian Westphal <fw(a)strlen.de> Signed-off-by: Pablo Neira Ayuso <pablo(a)netfilter.org> Signed-off-by: Sasha Levin <sashal(a)kernel.org> Signed-off-by: Ziyang Xuan <william.xuanziyang(a)huawei.com> --- include/linux/netfilter.h | 1 + net/bridge/br_netfilter_hooks.c | 96 ++++++++++++++++++++++ net/bridge/netfilter/nf_conntrack_bridge.c | 30 +++++++ net/netfilter/nf_conntrack_core.c | 1 + 4 files changed, 128 insertions(+) diff --git a/include/linux/netfilter.h b/include/linux/netfilter.h index 94fac194a7b1..f3658dd0d28d 100644 --- a/include/linux/netfilter.h +++ b/include/linux/netfilter.h @@ -471,6 +471,7 @@ struct nf_ct_hook { const struct sk_buff *); void (*attach)(struct sk_buff *nskb, const struct sk_buff *skb); void (*set_closing)(struct nf_conntrack *nfct); + int (*confirm)(struct sk_buff *skb); KABI_RESERVE(1) KABI_RESERVE(2) diff --git a/net/bridge/br_netfilter_hooks.c b/net/bridge/br_netfilter_hooks.c index 92dae4c4922c..6ef67030b4db 100644 --- a/net/bridge/br_netfilter_hooks.c +++ b/net/bridge/br_netfilter_hooks.c @@ -43,6 +43,10 @@ #include <linux/sysctl.h> #endif +#if IS_ENABLED(CONFIG_NF_CONNTRACK) +#include <net/netfilter/nf_conntrack_core.h> +#endif + static unsigned int brnf_net_id __read_mostly; struct brnf_net { @@ -553,6 +557,90 @@ static unsigned int br_nf_pre_routing(void *priv, return NF_STOLEN; } +#if IS_ENABLED(CONFIG_NF_CONNTRACK) +/* conntracks' nf_confirm logic cannot handle cloned skbs referencing + * the same nf_conn entry, which will happen for multicast (broadcast) + * Frames on bridges. + * + * Example: + * macvlan0 + * br0 + * ethX ethY + * + * ethX (or Y) receives multicast or broadcast packet containing + * an IP packet, not yet in conntrack table. + * + * 1. skb passes through bridge and fake-ip (br_netfilter)Prerouting. + * -> skb->_nfct now references a unconfirmed entry + * 2. skb is broad/mcast packet. bridge now passes clones out on each bridge + * interface. + * 3. skb gets passed up the stack. + * 4. In macvlan case, macvlan driver retains clone(s) of the mcast skb + * and schedules a work queue to send them out on the lower devices. + * + * The clone skb->_nfct is not a copy, it is the same entry as the + * original skb. The macvlan rx handler then returns RX_HANDLER_PASS. + * 5. Normal conntrack hooks (in NF_INET_LOCAL_IN) confirm the orig skb. + * + * The Macvlan broadcast worker and normal confirm path will race. + * + * This race will not happen if step 2 already confirmed a clone. In that + * case later steps perform skb_clone() with skb->_nfct already confirmed (in + * hash table). This works fine. + * + * But such confirmation won't happen when eb/ip/nftables rules dropped the + * packets before they reached the nf_confirm step in postrouting. + * + * Work around this problem by explicit confirmation of the entry at + * LOCAL_IN time, before upper layer has a chance to clone the unconfirmed + * entry. + * + */ +static unsigned int br_nf_local_in(void *priv, + struct sk_buff *skb, + const struct nf_hook_state *state) +{ + struct nf_conntrack *nfct = skb_nfct(skb); + const struct nf_ct_hook *ct_hook; + struct nf_conn *ct; + int ret; + + if (!nfct || skb->pkt_type == PACKET_HOST) + return NF_ACCEPT; + + ct = container_of(nfct, struct nf_conn, ct_general); + if (likely(nf_ct_is_confirmed(ct))) + return NF_ACCEPT; + + WARN_ON_ONCE(skb_shared(skb)); + WARN_ON_ONCE(refcount_read(&nfct->use) != 1); + + /* We can't call nf_confirm here, it would create a dependency + * on nf_conntrack module. + */ + ct_hook = rcu_dereference(nf_ct_hook); + if (!ct_hook) { + skb->_nfct = 0ul; + nf_conntrack_put(nfct); + return NF_ACCEPT; + } + + nf_bridge_pull_encap_header(skb); + ret = ct_hook->confirm(skb); + switch (ret & NF_VERDICT_MASK) { + case NF_STOLEN: + return NF_STOLEN; + default: + nf_bridge_push_encap_header(skb); + break; + } + + ct = container_of(nfct, struct nf_conn, ct_general); + WARN_ON_ONCE(!nf_ct_is_confirmed(ct)); + + return ret; +} +#endif /* PF_BRIDGE/FORWARD *************************************************/ static int br_nf_forward_finish(struct net *net, struct sock *sk, struct sk_buff *skb) @@ -962,6 +1050,14 @@ static const struct nf_hook_ops br_nf_ops[] = { .hooknum = NF_BR_PRE_ROUTING, .priority = NF_BR_PRI_BRNF, }, +#if IS_ENABLED(CONFIG_NF_CONNTRACK) + { + .hook = br_nf_local_in, + .pf = NFPROTO_BRIDGE, + .hooknum = NF_BR_LOCAL_IN, + .priority = NF_BR_PRI_LAST, + }, +#endif { .hook = br_nf_forward_ip, .pf = NFPROTO_BRIDGE, diff --git a/net/bridge/netfilter/nf_conntrack_bridge.c b/net/bridge/netfilter/nf_conntrack_bridge.c index 0fcf357ea7ad..d32fce70d797 100644 --- a/net/bridge/netfilter/nf_conntrack_bridge.c +++ b/net/bridge/netfilter/nf_conntrack_bridge.c @@ -291,6 +291,30 @@ static unsigned int nf_ct_bridge_pre(void *priv, struct sk_buff *skb, return nf_conntrack_in(skb, &bridge_state); } +static unsigned int nf_ct_bridge_in(void *priv, struct sk_buff *skb, + const struct nf_hook_state *state) +{ + enum ip_conntrack_info ctinfo; + struct nf_conn *ct; + + if (skb->pkt_type == PACKET_HOST) + return NF_ACCEPT; + + /* nf_conntrack_confirm() cannot handle concurrent clones, + * this happens for broad/multicast frames with e.g. macvlan on top + * of the bridge device. + */ + ct = nf_ct_get(skb, &ctinfo); + if (!ct || nf_ct_is_confirmed(ct) || nf_ct_is_template(ct)) + return NF_ACCEPT; + + /* let inet prerouting call conntrack again */ + skb->_nfct = 0; + nf_ct_put(ct); + + return NF_ACCEPT; +} + static void nf_ct_bridge_frag_save(struct sk_buff *skb, struct nf_bridge_frag_data *data) { @@ -385,6 +409,12 @@ static struct nf_hook_ops nf_ct_bridge_hook_ops[] __read_mostly = { .hooknum = NF_BR_PRE_ROUTING, .priority = NF_IP_PRI_CONNTRACK, }, + { + .hook = nf_ct_bridge_in, + .pf = NFPROTO_BRIDGE, + .hooknum = NF_BR_LOCAL_IN, + .priority = NF_IP_PRI_CONNTRACK_CONFIRM, + }, { .hook = nf_ct_bridge_post, .pf = NFPROTO_BRIDGE, diff --git a/net/netfilter/nf_conntrack_core.c b/net/netfilter/nf_conntrack_core.c index 9f6f2e643575..e4ae2a08da6a 100644 --- a/net/netfilter/nf_conntrack_core.c +++ b/net/netfilter/nf_conntrack_core.c @@ -2766,6 +2766,7 @@ static const struct nf_ct_hook nf_conntrack_hook = { .get_tuple_skb = nf_conntrack_get_tuple_skb, .attach = nf_conntrack_attach, .set_closing = nf_conntrack_set_closing, + .confirm = __nf_conntrack_confirm, }; void nf_conntrack_init_end(void) -- 2.25.1

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[PATCH OLK-6.6 0/3] Revert syscall performance degradation patches
by liwei 10 May '24

10 May '24

This patch group has about 30% impact on syscall performance. liwei (3): Revert "x86/bugs: Replace CONFIG_SPECTRE_BHI_{ON,OFF} with CONFIG_MITIGATION_SPECTRE_BHI" Revert "x86/bugs: Remove CONFIG_BHI_MITIGATION_AUTO and spectre_bhi=auto" Revert "x86: set SPECTRE_BHI_ON as default" Documentation/admin-guide/hw-vuln/spectre.rst | 4 ++++ .../admin-guide/kernel-parameters.txt | 3 +++ arch/x86/Kconfig | 21 ++++++++++++++++--- arch/x86/kernel/cpu/bugs.c | 10 ++++++++- 4 files changed, 34 insertions(+), 4 deletions(-) -- 2.25.1

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[PATCH OLK-5.10] media: usbtv: Remove useless locks in usbtv_video_free()
by Zeng Heng 10 May '24

10 May '24

From: Benjamin Gaignard <benjamin.gaignard(a)collabora.com> mainline inclusion from mainline-v6.9-rc1 commit 65e6a2773d655172143cc0b927cdc89549842895 category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/I9L9JS CVE: CVE-2024-27072 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id… -------------------------------- Remove locks calls in usbtv_video_free() because are useless and may led to a deadlock as reported here: https://syzkaller.appspot.com/x/bisect.txt?x=166dc872180000 Also remove usbtv_stop() call since it will be called when unregistering the device. Before 'c838530d230b' this issue would only be noticed if you disconnect while streaming and now it is noticeable even when disconnecting while not streaming. Fixes: c838530d230b ("media: media videobuf2: Be more flexible on the number of queue stored buffers") Fixes: f3d27f34fdd7 ("[media] usbtv: Add driver for Fushicai USBTV007 video frame grabber") Signed-off-by: Benjamin Gaignard <benjamin.gaignard(a)collabora.com> Reviewed-by: Tomasz Figa <tfiga(a)chromium.org> Tested-by: Hans Verkuil <hverkuil-cisco(a)xs4all.nl> Signed-off-by: Hans Verkuil <hverkuil-cisco(a)xs4all.nl> [hverkuil: fix minor spelling mistake in log message] Signed-off-by: Zeng Heng <zengheng4(a)huawei.com> --- drivers/media/usb/usbtv/usbtv-video.c | 7 ------- 1 file changed, 7 deletions(-) diff --git a/drivers/media/usb/usbtv/usbtv-video.c b/drivers/media/usb/usbtv/usbtv-video.c index 3b4a2e769230..f2aaec0f77c8 100644 --- a/drivers/media/usb/usbtv/usbtv-video.c +++ b/drivers/media/usb/usbtv/usbtv-video.c @@ -959,15 +959,8 @@ int usbtv_video_init(struct usbtv *usbtv) void usbtv_video_free(struct usbtv *usbtv) { - mutex_lock(&usbtv->vb2q_lock); - mutex_lock(&usbtv->v4l2_lock); - - usbtv_stop(usbtv); vb2_video_unregister_device(&usbtv->vdev); v4l2_device_disconnect(&usbtv->v4l2_dev); - mutex_unlock(&usbtv->v4l2_lock); - mutex_unlock(&usbtv->vb2q_lock); - v4l2_device_put(&usbtv->v4l2_dev); } -- 2.25.1

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[PATCH openEuler-22.03-LTS-SP2] media: usbtv: Remove useless locks in usbtv_video_free()
by Zeng Heng 10 May '24

10 May '24

From: Benjamin Gaignard <benjamin.gaignard(a)collabora.com> mainline inclusion from mainline-v6.9-rc1 commit 65e6a2773d655172143cc0b927cdc89549842895 category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/I9L9JS CVE: CVE-2024-27072 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id… -------------------------------- Remove locks calls in usbtv_video_free() because are useless and may led to a deadlock as reported here: https://syzkaller.appspot.com/x/bisect.txt?x=166dc872180000 Also remove usbtv_stop() call since it will be called when unregistering the device. Before 'c838530d230b' this issue would only be noticed if you disconnect while streaming and now it is noticeable even when disconnecting while not streaming. Fixes: c838530d230b ("media: media videobuf2: Be more flexible on the number of queue stored buffers") Fixes: f3d27f34fdd7 ("[media] usbtv: Add driver for Fushicai USBTV007 video frame grabber") Signed-off-by: Benjamin Gaignard <benjamin.gaignard(a)collabora.com> Reviewed-by: Tomasz Figa <tfiga(a)chromium.org> Tested-by: Hans Verkuil <hverkuil-cisco(a)xs4all.nl> Signed-off-by: Hans Verkuil <hverkuil-cisco(a)xs4all.nl> [hverkuil: fix minor spelling mistake in log message] Signed-off-by: Zeng Heng <zengheng4(a)huawei.com> --- drivers/media/usb/usbtv/usbtv-video.c | 7 ------- 1 file changed, 7 deletions(-) diff --git a/drivers/media/usb/usbtv/usbtv-video.c b/drivers/media/usb/usbtv/usbtv-video.c index 3b4a2e769230..f2aaec0f77c8 100644 --- a/drivers/media/usb/usbtv/usbtv-video.c +++ b/drivers/media/usb/usbtv/usbtv-video.c @@ -959,15 +959,8 @@ int usbtv_video_init(struct usbtv *usbtv) void usbtv_video_free(struct usbtv *usbtv) { - mutex_lock(&usbtv->vb2q_lock); - mutex_lock(&usbtv->v4l2_lock); - - usbtv_stop(usbtv); vb2_video_unregister_device(&usbtv->vdev); v4l2_device_disconnect(&usbtv->v4l2_dev); - mutex_unlock(&usbtv->v4l2_lock); - mutex_unlock(&usbtv->vb2q_lock); - v4l2_device_put(&usbtv->v4l2_dev); } -- 2.25.1

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[PATCH openEuler-1.0-LTS] media: usbtv: Remove useless locks in usbtv_video_free()
by Zeng Heng 10 May '24

10 May '24

From: Benjamin Gaignard <benjamin.gaignard(a)collabora.com> mainline inclusion from mainline-v6.9-rc1 commit 65e6a2773d655172143cc0b927cdc89549842895 category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/I9L9JS CVE: CVE-2024-27072 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id… -------------------------------- Remove locks calls in usbtv_video_free() because are useless and may led to a deadlock as reported here: https://syzkaller.appspot.com/x/bisect.txt?x=166dc872180000 Also remove usbtv_stop() call since it will be called when unregistering the device. Before 'c838530d230b' this issue would only be noticed if you disconnect while streaming and now it is noticeable even when disconnecting while not streaming. Fixes: c838530d230b ("media: media videobuf2: Be more flexible on the number of queue stored buffers") Fixes: f3d27f34fdd7 ("[media] usbtv: Add driver for Fushicai USBTV007 video frame grabber") Signed-off-by: Benjamin Gaignard <benjamin.gaignard(a)collabora.com> Reviewed-by: Tomasz Figa <tfiga(a)chromium.org> Tested-by: Hans Verkuil <hverkuil-cisco(a)xs4all.nl> Signed-off-by: Hans Verkuil <hverkuil-cisco(a)xs4all.nl> [hverkuil: fix minor spelling mistake in log message] Conflicts: drivers/media/usb/usbtv/usbtv-video.c [The version does not include commit 24b5836dbd45.] Signed-off-by: Zeng Heng <zengheng4(a)huawei.com> --- drivers/media/usb/usbtv/usbtv-video.c | 7 ------- 1 file changed, 7 deletions(-) diff --git a/drivers/media/usb/usbtv/usbtv-video.c b/drivers/media/usb/usbtv/usbtv-video.c index 36a9a4017185..096fca028d1f 100644 --- a/drivers/media/usb/usbtv/usbtv-video.c +++ b/drivers/media/usb/usbtv/usbtv-video.c @@ -963,15 +963,8 @@ int usbtv_video_init(struct usbtv *usbtv) void usbtv_video_free(struct usbtv *usbtv) { - mutex_lock(&usbtv->vb2q_lock); - mutex_lock(&usbtv->v4l2_lock); - - usbtv_stop(usbtv); video_unregister_device(&usbtv->vdev); v4l2_device_disconnect(&usbtv->v4l2_dev); - mutex_unlock(&usbtv->v4l2_lock); - mutex_unlock(&usbtv->vb2q_lock); - v4l2_device_put(&usbtv->v4l2_dev); } -- 2.25.1

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[PATCH OLK-5.10] SUNRPC: fix some memleaks in gssx_dec_option_array
by Dong Chenchen 10 May '24

10 May '24

From: Zhipeng Lu <alexious(a)zju.edu.cn> mainline inclusion from mainline-v6.9-rc1 commit 3cfcfc102a5e57b021b786a755a38935e357797d category: bugfix bugzilla: 189901, https://gitee.com/src-openeuler/kernel/issues/I9L9J1 CVE: CVE-2024-27388 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?… -------------------------------- The creds and oa->data need to be freed in the error-handling paths after their allocation. So this patch add these deallocations in the corresponding paths. Fixes: 1d658336b05f ("SUNRPC: Add RPC based upcall mechanism for RPCGSS auth") Signed-off-by: Zhipeng Lu <alexious(a)zju.edu.cn> Signed-off-by: Chuck Lever <chuck.lever(a)oracle.com> Signed-off-by: Dong Chenchen <dongchenchen2(a)huawei.com> --- net/sunrpc/auth_gss/gss_rpc_xdr.c | 27 +++++++++++++++++++-------- 1 file changed, 19 insertions(+), 8 deletions(-) diff --git a/net/sunrpc/auth_gss/gss_rpc_xdr.c b/net/sunrpc/auth_gss/gss_rpc_xdr.c index 2ff7b7083eba..e265b8d38aa1 100644 --- a/net/sunrpc/auth_gss/gss_rpc_xdr.c +++ b/net/sunrpc/auth_gss/gss_rpc_xdr.c @@ -250,8 +250,8 @@ static int gssx_dec_option_array(struct xdr_stream *xdr, creds = kzalloc(sizeof(struct svc_cred), GFP_KERNEL); if (!creds) { - kfree(oa->data); - return -ENOMEM; + err = -ENOMEM; + goto free_oa; } oa->data[0].option.data = CREDS_VALUE; @@ -265,29 +265,40 @@ static int gssx_dec_option_array(struct xdr_stream *xdr, /* option buffer */ p = xdr_inline_decode(xdr, 4); - if (unlikely(p == NULL)) - return -ENOSPC; + if (unlikely(p == NULL)) { + err = -ENOSPC; + goto free_creds; + } length = be32_to_cpup(p); p = xdr_inline_decode(xdr, length); - if (unlikely(p == NULL)) - return -ENOSPC; + if (unlikely(p == NULL)) { + err = -ENOSPC; + goto free_creds; + } if (length == sizeof(CREDS_VALUE) && memcmp(p, CREDS_VALUE, sizeof(CREDS_VALUE)) == 0) { /* We have creds here. parse them */ err = gssx_dec_linux_creds(xdr, creds); if (err) - return err; + goto free_creds; oa->data[0].value.len = 1; /* presence */ } else { /* consume uninteresting buffer */ err = gssx_dec_buffer(xdr, &dummy); if (err) - return err; + goto free_creds; } } return 0; + +free_creds: + kfree(creds); +free_oa: + kfree(oa->data); + oa->data = NULL; + return err; } static int gssx_dec_status(struct xdr_stream *xdr, -- 2.25.1

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