September 2025 - Linux-stable-mirror

by Alan Ye

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1 month, 2 weeks

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by Elpat Finance Loan

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1 month, 2 weeks

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[PATCH v2] mm/damon/sysfs: do not ignore callback's return value in damon_sysfs_damon_call()

by Akinobu Mita

The callback return value is ignored in damon_sysfs_damon_call(), which means that it is not possible to detect invalid user input when writing commands such as 'commit' to /sys/kernel/mm/damon/admin/kdamonds/<K>/state. Fix it. Signed-off-by: Akinobu Mita <akinobu.mita(a)gmail.com> Fixes: f64539dcdb87 ("mm/damon/sysfs: use damon_call() for update_schemes_stats") Cc: <stable(a)vger.kernel.org> # v6.14.x Reviewed-by: SeongJae Park <sj(a)kernel.org> --- mm/damon/sysfs.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/mm/damon/sysfs.c b/mm/damon/sysfs.c index fe4e73d0ebbb..3ffe3a77b5db 100644 --- a/mm/damon/sysfs.c +++ b/mm/damon/sysfs.c @@ -1627,12 +1627,14 @@ static int damon_sysfs_damon_call(int (*fn)(void *data), struct damon_sysfs_kdamond *kdamond) { struct damon_call_control call_control = {}; + int err; if (!kdamond->damon_ctx) return -EINVAL; call_control.fn = fn; call_control.data = kdamond; - return damon_call(kdamond->damon_ctx, &call_control); + err = damon_call(kdamond->damon_ctx, &call_control); + return err ? err : call_control.return_code; } struct damon_sysfs_schemes_walk_data { -- 2.43.0

1 month, 2 weeks

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[PATCH v2] crypto: aspeed - Fix dma_unmap_sg() direction

by Thomas Fourier

It seems like everywhere in this file, when the request is not bidirectionala, req->src is mapped with DMA_TO_DEVICE and req->dst is mapped with DMA_FROM_DEVICE. Fixes: 62f58b1637b7 ("crypto: aspeed - add HACE crypto driver") Cc: <stable(a)vger.kernel.org> Signed-off-by: Thomas Fourier <fourier.thomas(a)gmail.com> --- v1->v2: - fix confusion between dst and src in commit message drivers/crypto/aspeed/aspeed-hace-crypto.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/crypto/aspeed/aspeed-hace-crypto.c b/drivers/crypto/aspeed/aspeed-hace-crypto.c index a72dfebc53ff..fa201dae1f81 100644 --- a/drivers/crypto/aspeed/aspeed-hace-crypto.c +++ b/drivers/crypto/aspeed/aspeed-hace-crypto.c @@ -346,7 +346,7 @@ static int aspeed_sk_start_sg(struct aspeed_hace_dev *hace_dev) } else { dma_unmap_sg(hace_dev->dev, req->dst, rctx->dst_nents, - DMA_TO_DEVICE); + DMA_FROM_DEVICE); dma_unmap_sg(hace_dev->dev, req->src, rctx->src_nents, DMA_TO_DEVICE); } -- 2.43.0

1 month, 2 weeks

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Website Development, Mobile Apps & more.

by Bard India

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1 month, 2 weeks

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[PATCH 0/2] Fix riscv sparse warnings

by Alexandre Ghiti

This series simply fixes 2 recently introduced sparse warnings. Signed-off-by: Alexandre Ghiti <alexghiti(a)rivosinc.com> --- Alexandre Ghiti (2): riscv: Fix sparse warning in __get_user_error() riscv: Fix sparse warning about different address spaces arch/riscv/include/asm/uaccess.h | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) --- base-commit: ae9a687664d965b13eeab276111b2f97dd02e090 change-id: 20250903-dev-alex-sparse_warnings_v1-ecb4a333afdd Best regards, -- Alexandre Ghiti <alexghiti(a)rivosinc.com>

1 month, 2 weeks

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[PATCH 5.15.y] mptcp: set remote_deny_join_id0 on SYN recv

by Matthieu Baerts (NGI0)

commit 96939cec994070aa5df852c10fad5fc303a97ea3 upstream. When a SYN containing the 'C' flag (deny join id0) was received, this piece of information was not propagated to the path-manager. Even if this flag is mainly set on the server side, a client can also tell the server it cannot try to establish new subflows to the client's initial IP address and port. The server's PM should then record such info when received, and before sending events about the new connection. Fixes: df377be38725 ("mptcp: add deny_join_id0 in mptcp_options_received") Reviewed-by: Mat Martineau <martineau(a)kernel.org> Signed-off-by: Matthieu Baerts (NGI0) <matttbe(a)kernel.org> Link: https://patch.msgid.link/20250912-net-mptcp-pm-uspace-deny_join_id0-v1-1-40… Signed-off-by: Jakub Kicinski <kuba(a)kernel.org> [ Conflicts in subflow.c, because of differences in the context, e.g. introduced by commit 3a236aef280e ("mptcp: refactor passive socket initialization"), which is not in this version. The same lines -- using 'mptcp_sk(new_msk)' instead of 'owner' -- can still be added approximately at the same place, before calling mptcp_pm_new_connection(). ] Signed-off-by: Matthieu Baerts (NGI0) <matttbe(a)kernel.org> --- net/mptcp/subflow.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/net/mptcp/subflow.c b/net/mptcp/subflow.c index 6bc36132d490..f67d8c98d58a 100644 --- a/net/mptcp/subflow.c +++ b/net/mptcp/subflow.c @@ -758,6 +758,9 @@ static struct sock *subflow_syn_recv_sock(const struct sock *sk, */ WRITE_ONCE(mptcp_sk(new_msk)->first, child); + if (mp_opt.deny_join_id0) + WRITE_ONCE(mptcp_sk(new_msk)->pm.remote_deny_join_id0, true); + /* new mpc subflow takes ownership of the newly * created mptcp socket */ -- 2.51.0

1 month, 2 weeks

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[PATCH] drm/xe/uapi: loosen used tracking restriction

by Matthew Auld

Currently this is hidden behind perfmon_capable() since this is technically an info leak, given that this is a system wide metric. However the granularity reported here is always PAGE_SIZE aligned, which matches what the core kernel is already willing to expose to userspace if querying how many free RAM pages there are on the system, and that doesn't need any special privileges. In addition other drm drivers seem happy to expose this. The motivation here if with oneAPI where they want to use the system wide 'used' reporting here, so not the per-client fdinfo stats. This has also come up with some perf overlay applications wanting this information. Fixes: 1105ac15d2a1 ("drm/xe/uapi: restrict system wide accounting") Signed-off-by: Matthew Auld <matthew.auld(a)intel.com> Cc: Thomas Hellström <thomas.hellstrom(a)linux.intel.com> Cc: Joshua Santosh <joshua.santosh.ranjan(a)intel.com> Cc: José Roberto de Souza <jose.souza(a)intel.com> Cc: Matthew Brost <matthew.brost(a)intel.com> Cc: Rodrigo Vivi <rodrigo.vivi(a)intel.com> Cc: <stable(a)vger.kernel.org> # v6.8+ --- drivers/gpu/drm/xe/xe_query.c | 15 ++++++--------- 1 file changed, 6 insertions(+), 9 deletions(-) diff --git a/drivers/gpu/drm/xe/xe_query.c b/drivers/gpu/drm/xe/xe_query.c index e1b603aba61b..2e9ff33ed2fe 100644 --- a/drivers/gpu/drm/xe/xe_query.c +++ b/drivers/gpu/drm/xe/xe_query.c @@ -276,8 +276,7 @@ static int query_mem_regions(struct xe_device *xe, mem_regions->mem_regions[0].instance = 0; mem_regions->mem_regions[0].min_page_size = PAGE_SIZE; mem_regions->mem_regions[0].total_size = man->size << PAGE_SHIFT; - if (perfmon_capable()) - mem_regions->mem_regions[0].used = ttm_resource_manager_usage(man); + mem_regions->mem_regions[0].used = ttm_resource_manager_usage(man); mem_regions->num_mem_regions = 1; for (i = XE_PL_VRAM0; i <= XE_PL_VRAM1; ++i) { @@ -293,13 +292,11 @@ static int query_mem_regions(struct xe_device *xe, mem_regions->mem_regions[mem_regions->num_mem_regions].total_size = man->size; - if (perfmon_capable()) { - xe_ttm_vram_get_used(man, - &mem_regions->mem_regions - [mem_regions->num_mem_regions].used, - &mem_regions->mem_regions - [mem_regions->num_mem_regions].cpu_visible_used); - } + xe_ttm_vram_get_used(man, + &mem_regions->mem_regions + [mem_regions->num_mem_regions].used, + &mem_regions->mem_regions + [mem_regions->num_mem_regions].cpu_visible_used); mem_regions->mem_regions[mem_regions->num_mem_regions].cpu_visible_size = xe_ttm_vram_get_cpu_visible_size(man); -- 2.51.0

1 month, 2 weeks

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[PATCH 6.1.y 0/2] mptcp: fix recent failed backports (20250919)

by Matthieu Baerts (NGI0)

The following patches could not be applied without conflicts in this tree: - 2293c57484ae ("mptcp: pm: nl: announce deny-join-id0 flag") - 24733e193a0d ("selftests: mptcp: userspace pm: validate deny-join-id0 flag") Conflicts have been resolved, and documented in each patch. Matthieu Baerts (NGI0) (2): mptcp: pm: nl: announce deny-join-id0 flag selftests: mptcp: userspace pm: validate deny-join-id0 flag include/uapi/linux/mptcp.h | 6 ++++-- net/mptcp/pm_netlink.c | 7 +++++++ tools/testing/selftests/net/mptcp/pm_nl_ctl.c | 7 +++++++ tools/testing/selftests/net/mptcp/userspace_pm.sh | 14 ++++++++++++-- 4 files changed, 30 insertions(+), 4 deletions(-) -- 2.51.0

1 month, 2 weeks

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[PATCH 6.12.y] mptcp: pm: nl: announce deny-join-id0 flag

by Matthieu Baerts (NGI0)

commit 2293c57484ae64c9a3c847c8807db8c26a3a4d41 upstream. During the connection establishment, a peer can tell the other one that it cannot establish new subflows to the initial IP address and port by setting the 'C' flag [1]. Doing so makes sense when the sender is behind a strict NAT, operating behind a legacy Layer 4 load balancer, or using anycast IP address for example. When this 'C' flag is set, the path-managers must then not try to establish new subflows to the other peer's initial IP address and port. The in-kernel PM has access to this info, but the userspace PM didn't. The RFC8684 [1] is strict about that: (...) therefore the receiver MUST NOT try to open any additional subflows toward this address and port. So it is important to tell the userspace about that as it is responsible for the respect of this flag. When a new connection is created and established, the Netlink events now contain the existing but not currently used 'flags' attribute. When MPTCP_PM_EV_FLAG_DENY_JOIN_ID0 is set, it means no other subflows to the initial IP address and port -- info that are also part of the event -- can be established. Link: https://datatracker.ietf.org/doc/html/rfc8684#section-3.1-20.6 [1] Fixes: 702c2f646d42 ("mptcp: netlink: allow userspace-driven subflow establishment") Reported-by: Marek Majkowski <marek(a)cloudflare.com> Closes: https://github.com/multipath-tcp/mptcp_net-next/issues/532 Reviewed-by: Mat Martineau <martineau(a)kernel.org> Signed-off-by: Matthieu Baerts (NGI0) <matttbe(a)kernel.org> Link: https://patch.msgid.link/20250912-net-mptcp-pm-uspace-deny_join_id0-v1-2-40… Signed-off-by: Jakub Kicinski <kuba(a)kernel.org> [ Conflicts in mptcp_pm.yaml, because the indentation has been modified in commit ec362192aa9e ("netlink: specs: fix up indentation errors"), which is not in this version. Applying the same modifications, but at a different level. ] Signed-off-by: Matthieu Baerts (NGI0) <matttbe(a)kernel.org> --- Documentation/netlink/specs/mptcp_pm.yaml | 4 ++-- include/uapi/linux/mptcp.h | 2 ++ include/uapi/linux/mptcp_pm.h | 4 ++-- net/mptcp/pm_netlink.c | 7 +++++++ 4 files changed, 13 insertions(+), 4 deletions(-) diff --git a/Documentation/netlink/specs/mptcp_pm.yaml b/Documentation/netlink/specs/mptcp_pm.yaml index 7e295bad8b29..a670a9bbe01b 100644 --- a/Documentation/netlink/specs/mptcp_pm.yaml +++ b/Documentation/netlink/specs/mptcp_pm.yaml @@ -28,13 +28,13 @@ definitions: traffic-patterns it can take a long time until the MPTCP_EVENT_ESTABLISHED is sent. Attributes: token, family, saddr4 | saddr6, daddr4 | daddr6, sport, - dport, server-side. + dport, server-side, [flags]. - name: established doc: >- A MPTCP connection is established (can start new subflows). Attributes: token, family, saddr4 | saddr6, daddr4 | daddr6, sport, - dport, server-side. + dport, server-side, [flags]. - name: closed doc: >- diff --git a/include/uapi/linux/mptcp.h b/include/uapi/linux/mptcp.h index 67d015df8893..5fd5b4cf75ca 100644 --- a/include/uapi/linux/mptcp.h +++ b/include/uapi/linux/mptcp.h @@ -31,6 +31,8 @@ #define MPTCP_INFO_FLAG_FALLBACK _BITUL(0) #define MPTCP_INFO_FLAG_REMOTE_KEY_RECEIVED _BITUL(1) +#define MPTCP_PM_EV_FLAG_DENY_JOIN_ID0 _BITUL(0) + #define MPTCP_PM_ADDR_FLAG_SIGNAL (1 << 0) #define MPTCP_PM_ADDR_FLAG_SUBFLOW (1 << 1) #define MPTCP_PM_ADDR_FLAG_BACKUP (1 << 2) diff --git a/include/uapi/linux/mptcp_pm.h b/include/uapi/linux/mptcp_pm.h index 6ac84b2f636c..7359d34da446 100644 --- a/include/uapi/linux/mptcp_pm.h +++ b/include/uapi/linux/mptcp_pm.h @@ -16,10 +16,10 @@ * good time to allocate memory and send ADD_ADDR if needed. Depending on the * traffic-patterns it can take a long time until the MPTCP_EVENT_ESTABLISHED * is sent. Attributes: token, family, saddr4 | saddr6, daddr4 | daddr6, - * sport, dport, server-side. + * sport, dport, server-side, [flags]. * @MPTCP_EVENT_ESTABLISHED: A MPTCP connection is established (can start new * subflows). Attributes: token, family, saddr4 | saddr6, daddr4 | daddr6, - * sport, dport, server-side. + * sport, dport, server-side, [flags]. * @MPTCP_EVENT_CLOSED: A MPTCP connection has stopped. Attribute: token. * @MPTCP_EVENT_ANNOUNCED: A new address has been announced by the peer. * Attributes: token, rem_id, family, daddr4 | daddr6 [, dport]. diff --git a/net/mptcp/pm_netlink.c b/net/mptcp/pm_netlink.c index b763729b85e0..463c2e7956d5 100644 --- a/net/mptcp/pm_netlink.c +++ b/net/mptcp/pm_netlink.c @@ -2211,6 +2211,7 @@ static int mptcp_event_created(struct sk_buff *skb, const struct sock *ssk) { int err = nla_put_u32(skb, MPTCP_ATTR_TOKEN, READ_ONCE(msk->token)); + u16 flags = 0; if (err) return err; @@ -2218,6 +2219,12 @@ static int mptcp_event_created(struct sk_buff *skb, if (nla_put_u8(skb, MPTCP_ATTR_SERVER_SIDE, READ_ONCE(msk->pm.server_side))) return -EMSGSIZE; + if (READ_ONCE(msk->pm.remote_deny_join_id0)) + flags |= MPTCP_PM_EV_FLAG_DENY_JOIN_ID0; + + if (flags && nla_put_u16(skb, MPTCP_ATTR_FLAGS, flags)) + return -EMSGSIZE; + return mptcp_event_add_subflow(skb, ssk); } -- 2.51.0

1 month, 2 weeks

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Linux-stable-mirror September 2025