July 2024 - Linux-stable-mirror

FAILED: patch "[PATCH] rbd: don't assume RBD_LOCK_STATE_LOCKED for exclusive" failed to apply to 6.6-stable tree

by gregkh＠linuxfoundation.org

The patch below does not apply to the 6.6-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <stable(a)vger.kernel.org>. To reproduce the conflict and resubmit, you may use the following commands: git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-6.6.y git checkout FETCH_HEAD git cherry-pick -x 2237ceb71f89837ac47c5dce2aaa2c2b3a337a3c # <resolve conflicts, build, test, etc.> git commit -s git send-email --to '<stable(a)vger.kernel.org>' --in-reply-to '2024073022-profound-unsigned-6302@gregkh' --subject-prefix 'PATCH 6.6.y' HEAD^.. Possible dependencies: 2237ceb71f89 ("rbd: don't assume RBD_LOCK_STATE_LOCKED for exclusive mappings") ded080c86b3f ("rbd: don't move requests to the running list on errors") thanks, greg k-h ------------------ original commit in Linus's tree ------------------ From 2237ceb71f89837ac47c5dce2aaa2c2b3a337a3c Mon Sep 17 00:00:00 2001 From: Ilya Dryomov <idryomov(a)gmail.com> Date: Tue, 23 Jul 2024 18:07:59 +0200 Subject: [PATCH] rbd: don't assume RBD_LOCK_STATE_LOCKED for exclusive mappings Every time a watch is reestablished after getting lost, we need to update the cookie which involves quiescing exclusive lock. For this, we transition from RBD_LOCK_STATE_LOCKED to RBD_LOCK_STATE_QUIESCING roughly for the duration of rbd_reacquire_lock() call. If the mapping is exclusive and I/O happens to arrive in this time window, it's failed with EROFS (later translated to EIO) based on the wrong assumption in rbd_img_exclusive_lock() -- "lock got released?" check there stopped making sense with commit a2b1da09793d ("rbd: lock should be quiesced on reacquire"). To make it worse, any such I/O is added to the acquiring list before EROFS is returned and this sets up for violating rbd_lock_del_request() precondition that the request is either on the running list or not on any list at all -- see commit ded080c86b3f ("rbd: don't move requests to the running list on errors"). rbd_lock_del_request() ends up processing these requests as if they were on the running list which screws up quiescing_wait completion counter and ultimately leads to rbd_assert(!completion_done(&rbd_dev->quiescing_wait)); being triggered on the next watch error. Cc: stable(a)vger.kernel.org # 06ef84c4e9c4: rbd: rename RBD_LOCK_STATE_RELEASING and releasing_wait Cc: stable(a)vger.kernel.org Fixes: 637cd060537d ("rbd: new exclusive lock wait/wake code") Signed-off-by: Ilya Dryomov <idryomov(a)gmail.com> Reviewed-by: Dongsheng Yang <dongsheng.yang(a)easystack.cn> diff --git a/drivers/block/rbd.c b/drivers/block/rbd.c index c30d227753d7..ea6c592e015c 100644 --- a/drivers/block/rbd.c +++ b/drivers/block/rbd.c @@ -3457,6 +3457,7 @@ static void rbd_lock_del_request(struct rbd_img_request *img_req) lockdep_assert_held(&rbd_dev->lock_rwsem); spin_lock(&rbd_dev->lock_lists_lock); if (!list_empty(&img_req->lock_item)) { + rbd_assert(!list_empty(&rbd_dev->running_list)); list_del_init(&img_req->lock_item); need_wakeup = (rbd_dev->lock_state == RBD_LOCK_STATE_QUIESCING && list_empty(&rbd_dev->running_list)); @@ -3476,11 +3477,6 @@ static int rbd_img_exclusive_lock(struct rbd_img_request *img_req) if (rbd_lock_add_request(img_req)) return 1; - if (rbd_dev->opts->exclusive) { - WARN_ON(1); /* lock got released? */ - return -EROFS; - } - /* * Note the use of mod_delayed_work() in rbd_acquire_lock() * and cancel_delayed_work() in wake_lock_waiters(). @@ -4601,6 +4597,10 @@ static void rbd_reacquire_lock(struct rbd_device *rbd_dev) rbd_warn(rbd_dev, "failed to update lock cookie: %d", ret); + if (rbd_dev->opts->exclusive) + rbd_warn(rbd_dev, + "temporarily releasing lock on exclusive mapping"); + /* * Lock cookie cannot be updated on older OSDs, so do * a manual release and queue an acquire.

1 year, 2 months

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FAILED: patch "[PATCH] mtd: rawnand: lpx32xx: Fix dma_request_chan() error checks" failed to apply to 4.19-stable tree

by gregkh＠linuxfoundation.org

The patch below does not apply to the 4.19-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <stable(a)vger.kernel.org>. To reproduce the conflict and resubmit, you may use the following commands: git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-4.19.y git checkout FETCH_HEAD git cherry-pick -x a503f91a3645651a39baf97f1aed90d5d9f9bda9 # <resolve conflicts, build, test, etc.> git commit -s git send-email --to '<stable(a)vger.kernel.org>' --in-reply-to '2024073001-kindling-liqueur-1bf1@gregkh' --subject-prefix 'PATCH 4.19.y' HEAD^.. Possible dependencies: a503f91a3645 ("mtd: rawnand: lpx32xx: Fix dma_request_chan() error checks") 478211867460 ("mtd: rawnand: lpx32xx: Request DMA channels using DT entries") thanks, greg k-h ------------------ original commit in Linus's tree ------------------ From a503f91a3645651a39baf97f1aed90d5d9f9bda9 Mon Sep 17 00:00:00 2001 From: Piotr Wojtaszczyk <piotr.wojtaszczyk(a)timesys.com> Date: Fri, 5 Jul 2024 13:51:35 +0200 Subject: [PATCH] mtd: rawnand: lpx32xx: Fix dma_request_chan() error checks The dma_request_chan() returns error pointer in case of error, while dma_request_channel() returns NULL in case of error therefore different error checks are needed for the two. Fixes: 7326d3fb1ee3 ("mtd: rawnand: lpx32xx: Request DMA channels using DT entries") Signed-off-by: Piotr Wojtaszczyk <piotr.wojtaszczyk(a)timesys.com> Cc: stable(a)vger.kernel.org Signed-off-by: Miquel Raynal <miquel.raynal(a)bootlin.com> Link: https://lore.kernel.org/linux-mtd/20240705115139.126522-1-piotr.wojtaszczyk… diff --git a/drivers/mtd/nand/raw/lpc32xx_mlc.c b/drivers/mtd/nand/raw/lpc32xx_mlc.c index 92cebe871bb4..b9c3adc54c01 100644 --- a/drivers/mtd/nand/raw/lpc32xx_mlc.c +++ b/drivers/mtd/nand/raw/lpc32xx_mlc.c @@ -575,7 +575,7 @@ static int lpc32xx_dma_setup(struct lpc32xx_nand_host *host) dma_cap_mask_t mask; host->dma_chan = dma_request_chan(mtd->dev.parent, "rx-tx"); - if (!host->dma_chan) { + if (IS_ERR(host->dma_chan)) { /* fallback to request using platform data */ if (!host->pdata || !host->pdata->dma_filter) { dev_err(mtd->dev.parent, "no DMA platform data\n"); diff --git a/drivers/mtd/nand/raw/lpc32xx_slc.c b/drivers/mtd/nand/raw/lpc32xx_slc.c index 3b7e3d259785..ade971e4cc3b 100644 --- a/drivers/mtd/nand/raw/lpc32xx_slc.c +++ b/drivers/mtd/nand/raw/lpc32xx_slc.c @@ -722,7 +722,7 @@ static int lpc32xx_nand_dma_setup(struct lpc32xx_nand_host *host) dma_cap_mask_t mask; host->dma_chan = dma_request_chan(mtd->dev.parent, "rx-tx"); - if (!host->dma_chan) { + if (IS_ERR(host->dma_chan)) { /* fallback to request using platform data */ if (!host->pdata || !host->pdata->dma_filter) { dev_err(mtd->dev.parent, "no DMA platform data\n");

1 year, 2 months

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FAILED: patch "[PATCH] mtd: rawnand: lpx32xx: Fix dma_request_chan() error checks" failed to apply to 5.4-stable tree

by gregkh＠linuxfoundation.org

The patch below does not apply to the 5.4-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <stable(a)vger.kernel.org>. To reproduce the conflict and resubmit, you may use the following commands: git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-5.4.y git checkout FETCH_HEAD git cherry-pick -x a503f91a3645651a39baf97f1aed90d5d9f9bda9 # <resolve conflicts, build, test, etc.> git commit -s git send-email --to '<stable(a)vger.kernel.org>' --in-reply-to '2024073000-cedar-nutrient-4b9a@gregkh' --subject-prefix 'PATCH 5.4.y' HEAD^.. Possible dependencies: a503f91a3645 ("mtd: rawnand: lpx32xx: Fix dma_request_chan() error checks") 478211867460 ("mtd: rawnand: lpx32xx: Request DMA channels using DT entries") thanks, greg k-h ------------------ original commit in Linus's tree ------------------ From a503f91a3645651a39baf97f1aed90d5d9f9bda9 Mon Sep 17 00:00:00 2001 From: Piotr Wojtaszczyk <piotr.wojtaszczyk(a)timesys.com> Date: Fri, 5 Jul 2024 13:51:35 +0200 Subject: [PATCH] mtd: rawnand: lpx32xx: Fix dma_request_chan() error checks The dma_request_chan() returns error pointer in case of error, while dma_request_channel() returns NULL in case of error therefore different error checks are needed for the two. Fixes: 7326d3fb1ee3 ("mtd: rawnand: lpx32xx: Request DMA channels using DT entries") Signed-off-by: Piotr Wojtaszczyk <piotr.wojtaszczyk(a)timesys.com> Cc: stable(a)vger.kernel.org Signed-off-by: Miquel Raynal <miquel.raynal(a)bootlin.com> Link: https://lore.kernel.org/linux-mtd/20240705115139.126522-1-piotr.wojtaszczyk… diff --git a/drivers/mtd/nand/raw/lpc32xx_mlc.c b/drivers/mtd/nand/raw/lpc32xx_mlc.c index 92cebe871bb4..b9c3adc54c01 100644 --- a/drivers/mtd/nand/raw/lpc32xx_mlc.c +++ b/drivers/mtd/nand/raw/lpc32xx_mlc.c @@ -575,7 +575,7 @@ static int lpc32xx_dma_setup(struct lpc32xx_nand_host *host) dma_cap_mask_t mask; host->dma_chan = dma_request_chan(mtd->dev.parent, "rx-tx"); - if (!host->dma_chan) { + if (IS_ERR(host->dma_chan)) { /* fallback to request using platform data */ if (!host->pdata || !host->pdata->dma_filter) { dev_err(mtd->dev.parent, "no DMA platform data\n"); diff --git a/drivers/mtd/nand/raw/lpc32xx_slc.c b/drivers/mtd/nand/raw/lpc32xx_slc.c index 3b7e3d259785..ade971e4cc3b 100644 --- a/drivers/mtd/nand/raw/lpc32xx_slc.c +++ b/drivers/mtd/nand/raw/lpc32xx_slc.c @@ -722,7 +722,7 @@ static int lpc32xx_nand_dma_setup(struct lpc32xx_nand_host *host) dma_cap_mask_t mask; host->dma_chan = dma_request_chan(mtd->dev.parent, "rx-tx"); - if (!host->dma_chan) { + if (IS_ERR(host->dma_chan)) { /* fallback to request using platform data */ if (!host->pdata || !host->pdata->dma_filter) { dev_err(mtd->dev.parent, "no DMA platform data\n");

1 year, 2 months

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FAILED: patch "[PATCH] mtd: rawnand: lpx32xx: Fix dma_request_chan() error checks" failed to apply to 5.15-stable tree

by gregkh＠linuxfoundation.org

The patch below does not apply to the 5.15-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <stable(a)vger.kernel.org>. To reproduce the conflict and resubmit, you may use the following commands: git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-5.15.y git checkout FETCH_HEAD git cherry-pick -x a503f91a3645651a39baf97f1aed90d5d9f9bda9 # <resolve conflicts, build, test, etc.> git commit -s git send-email --to '<stable(a)vger.kernel.org>' --in-reply-to '2024073059-trodden-challenge-685c@gregkh' --subject-prefix 'PATCH 5.15.y' HEAD^.. Possible dependencies: a503f91a3645 ("mtd: rawnand: lpx32xx: Fix dma_request_chan() error checks") 478211867460 ("mtd: rawnand: lpx32xx: Request DMA channels using DT entries") thanks, greg k-h ------------------ original commit in Linus's tree ------------------ From a503f91a3645651a39baf97f1aed90d5d9f9bda9 Mon Sep 17 00:00:00 2001 From: Piotr Wojtaszczyk <piotr.wojtaszczyk(a)timesys.com> Date: Fri, 5 Jul 2024 13:51:35 +0200 Subject: [PATCH] mtd: rawnand: lpx32xx: Fix dma_request_chan() error checks The dma_request_chan() returns error pointer in case of error, while dma_request_channel() returns NULL in case of error therefore different error checks are needed for the two. Fixes: 7326d3fb1ee3 ("mtd: rawnand: lpx32xx: Request DMA channels using DT entries") Signed-off-by: Piotr Wojtaszczyk <piotr.wojtaszczyk(a)timesys.com> Cc: stable(a)vger.kernel.org Signed-off-by: Miquel Raynal <miquel.raynal(a)bootlin.com> Link: https://lore.kernel.org/linux-mtd/20240705115139.126522-1-piotr.wojtaszczyk… diff --git a/drivers/mtd/nand/raw/lpc32xx_mlc.c b/drivers/mtd/nand/raw/lpc32xx_mlc.c index 92cebe871bb4..b9c3adc54c01 100644 --- a/drivers/mtd/nand/raw/lpc32xx_mlc.c +++ b/drivers/mtd/nand/raw/lpc32xx_mlc.c @@ -575,7 +575,7 @@ static int lpc32xx_dma_setup(struct lpc32xx_nand_host *host) dma_cap_mask_t mask; host->dma_chan = dma_request_chan(mtd->dev.parent, "rx-tx"); - if (!host->dma_chan) { + if (IS_ERR(host->dma_chan)) { /* fallback to request using platform data */ if (!host->pdata || !host->pdata->dma_filter) { dev_err(mtd->dev.parent, "no DMA platform data\n"); diff --git a/drivers/mtd/nand/raw/lpc32xx_slc.c b/drivers/mtd/nand/raw/lpc32xx_slc.c index 3b7e3d259785..ade971e4cc3b 100644 --- a/drivers/mtd/nand/raw/lpc32xx_slc.c +++ b/drivers/mtd/nand/raw/lpc32xx_slc.c @@ -722,7 +722,7 @@ static int lpc32xx_nand_dma_setup(struct lpc32xx_nand_host *host) dma_cap_mask_t mask; host->dma_chan = dma_request_chan(mtd->dev.parent, "rx-tx"); - if (!host->dma_chan) { + if (IS_ERR(host->dma_chan)) { /* fallback to request using platform data */ if (!host->pdata || !host->pdata->dma_filter) { dev_err(mtd->dev.parent, "no DMA platform data\n");

1 year, 2 months

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FAILED: patch "[PATCH] mtd: rawnand: lpx32xx: Fix dma_request_chan() error checks" failed to apply to 5.10-stable tree

by gregkh＠linuxfoundation.org

The patch below does not apply to the 5.10-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <stable(a)vger.kernel.org>. To reproduce the conflict and resubmit, you may use the following commands: git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-5.10.y git checkout FETCH_HEAD git cherry-pick -x a503f91a3645651a39baf97f1aed90d5d9f9bda9 # <resolve conflicts, build, test, etc.> git commit -s git send-email --to '<stable(a)vger.kernel.org>' --in-reply-to '2024073059-maker-presume-f696@gregkh' --subject-prefix 'PATCH 5.10.y' HEAD^.. Possible dependencies: a503f91a3645 ("mtd: rawnand: lpx32xx: Fix dma_request_chan() error checks") 478211867460 ("mtd: rawnand: lpx32xx: Request DMA channels using DT entries") thanks, greg k-h ------------------ original commit in Linus's tree ------------------ From a503f91a3645651a39baf97f1aed90d5d9f9bda9 Mon Sep 17 00:00:00 2001 From: Piotr Wojtaszczyk <piotr.wojtaszczyk(a)timesys.com> Date: Fri, 5 Jul 2024 13:51:35 +0200 Subject: [PATCH] mtd: rawnand: lpx32xx: Fix dma_request_chan() error checks The dma_request_chan() returns error pointer in case of error, while dma_request_channel() returns NULL in case of error therefore different error checks are needed for the two. Fixes: 7326d3fb1ee3 ("mtd: rawnand: lpx32xx: Request DMA channels using DT entries") Signed-off-by: Piotr Wojtaszczyk <piotr.wojtaszczyk(a)timesys.com> Cc: stable(a)vger.kernel.org Signed-off-by: Miquel Raynal <miquel.raynal(a)bootlin.com> Link: https://lore.kernel.org/linux-mtd/20240705115139.126522-1-piotr.wojtaszczyk… diff --git a/drivers/mtd/nand/raw/lpc32xx_mlc.c b/drivers/mtd/nand/raw/lpc32xx_mlc.c index 92cebe871bb4..b9c3adc54c01 100644 --- a/drivers/mtd/nand/raw/lpc32xx_mlc.c +++ b/drivers/mtd/nand/raw/lpc32xx_mlc.c @@ -575,7 +575,7 @@ static int lpc32xx_dma_setup(struct lpc32xx_nand_host *host) dma_cap_mask_t mask; host->dma_chan = dma_request_chan(mtd->dev.parent, "rx-tx"); - if (!host->dma_chan) { + if (IS_ERR(host->dma_chan)) { /* fallback to request using platform data */ if (!host->pdata || !host->pdata->dma_filter) { dev_err(mtd->dev.parent, "no DMA platform data\n"); diff --git a/drivers/mtd/nand/raw/lpc32xx_slc.c b/drivers/mtd/nand/raw/lpc32xx_slc.c index 3b7e3d259785..ade971e4cc3b 100644 --- a/drivers/mtd/nand/raw/lpc32xx_slc.c +++ b/drivers/mtd/nand/raw/lpc32xx_slc.c @@ -722,7 +722,7 @@ static int lpc32xx_nand_dma_setup(struct lpc32xx_nand_host *host) dma_cap_mask_t mask; host->dma_chan = dma_request_chan(mtd->dev.parent, "rx-tx"); - if (!host->dma_chan) { + if (IS_ERR(host->dma_chan)) { /* fallback to request using platform data */ if (!host->pdata || !host->pdata->dma_filter) { dev_err(mtd->dev.parent, "no DMA platform data\n");

1 year, 2 months

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FAILED: patch "[PATCH] mtd: rawnand: lpx32xx: Fix dma_request_chan() error checks" failed to apply to 6.1-stable tree

by gregkh＠linuxfoundation.org

The patch below does not apply to the 6.1-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <stable(a)vger.kernel.org>. To reproduce the conflict and resubmit, you may use the following commands: git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-6.1.y git checkout FETCH_HEAD git cherry-pick -x a503f91a3645651a39baf97f1aed90d5d9f9bda9 # <resolve conflicts, build, test, etc.> git commit -s git send-email --to '<stable(a)vger.kernel.org>' --in-reply-to '2024073058-suing-candied-447f@gregkh' --subject-prefix 'PATCH 6.1.y' HEAD^.. Possible dependencies: a503f91a3645 ("mtd: rawnand: lpx32xx: Fix dma_request_chan() error checks") 478211867460 ("mtd: rawnand: lpx32xx: Request DMA channels using DT entries") thanks, greg k-h ------------------ original commit in Linus's tree ------------------ From a503f91a3645651a39baf97f1aed90d5d9f9bda9 Mon Sep 17 00:00:00 2001 From: Piotr Wojtaszczyk <piotr.wojtaszczyk(a)timesys.com> Date: Fri, 5 Jul 2024 13:51:35 +0200 Subject: [PATCH] mtd: rawnand: lpx32xx: Fix dma_request_chan() error checks The dma_request_chan() returns error pointer in case of error, while dma_request_channel() returns NULL in case of error therefore different error checks are needed for the two. Fixes: 7326d3fb1ee3 ("mtd: rawnand: lpx32xx: Request DMA channels using DT entries") Signed-off-by: Piotr Wojtaszczyk <piotr.wojtaszczyk(a)timesys.com> Cc: stable(a)vger.kernel.org Signed-off-by: Miquel Raynal <miquel.raynal(a)bootlin.com> Link: https://lore.kernel.org/linux-mtd/20240705115139.126522-1-piotr.wojtaszczyk… diff --git a/drivers/mtd/nand/raw/lpc32xx_mlc.c b/drivers/mtd/nand/raw/lpc32xx_mlc.c index 92cebe871bb4..b9c3adc54c01 100644 --- a/drivers/mtd/nand/raw/lpc32xx_mlc.c +++ b/drivers/mtd/nand/raw/lpc32xx_mlc.c @@ -575,7 +575,7 @@ static int lpc32xx_dma_setup(struct lpc32xx_nand_host *host) dma_cap_mask_t mask; host->dma_chan = dma_request_chan(mtd->dev.parent, "rx-tx"); - if (!host->dma_chan) { + if (IS_ERR(host->dma_chan)) { /* fallback to request using platform data */ if (!host->pdata || !host->pdata->dma_filter) { dev_err(mtd->dev.parent, "no DMA platform data\n"); diff --git a/drivers/mtd/nand/raw/lpc32xx_slc.c b/drivers/mtd/nand/raw/lpc32xx_slc.c index 3b7e3d259785..ade971e4cc3b 100644 --- a/drivers/mtd/nand/raw/lpc32xx_slc.c +++ b/drivers/mtd/nand/raw/lpc32xx_slc.c @@ -722,7 +722,7 @@ static int lpc32xx_nand_dma_setup(struct lpc32xx_nand_host *host) dma_cap_mask_t mask; host->dma_chan = dma_request_chan(mtd->dev.parent, "rx-tx"); - if (!host->dma_chan) { + if (IS_ERR(host->dma_chan)) { /* fallback to request using platform data */ if (!host->pdata || !host->pdata->dma_filter) { dev_err(mtd->dev.parent, "no DMA platform data\n");

1 year, 2 months

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FAILED: patch "[PATCH] mtd: rawnand: lpx32xx: Fix dma_request_chan() error checks" failed to apply to 6.6-stable tree

by gregkh＠linuxfoundation.org

The patch below does not apply to the 6.6-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <stable(a)vger.kernel.org>. To reproduce the conflict and resubmit, you may use the following commands: git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-6.6.y git checkout FETCH_HEAD git cherry-pick -x a503f91a3645651a39baf97f1aed90d5d9f9bda9 # <resolve conflicts, build, test, etc.> git commit -s git send-email --to '<stable(a)vger.kernel.org>' --in-reply-to '2024073057-pasture-amused-2fe9@gregkh' --subject-prefix 'PATCH 6.6.y' HEAD^.. Possible dependencies: a503f91a3645 ("mtd: rawnand: lpx32xx: Fix dma_request_chan() error checks") 478211867460 ("mtd: rawnand: lpx32xx: Request DMA channels using DT entries") thanks, greg k-h ------------------ original commit in Linus's tree ------------------ From a503f91a3645651a39baf97f1aed90d5d9f9bda9 Mon Sep 17 00:00:00 2001 From: Piotr Wojtaszczyk <piotr.wojtaszczyk(a)timesys.com> Date: Fri, 5 Jul 2024 13:51:35 +0200 Subject: [PATCH] mtd: rawnand: lpx32xx: Fix dma_request_chan() error checks The dma_request_chan() returns error pointer in case of error, while dma_request_channel() returns NULL in case of error therefore different error checks are needed for the two. Fixes: 7326d3fb1ee3 ("mtd: rawnand: lpx32xx: Request DMA channels using DT entries") Signed-off-by: Piotr Wojtaszczyk <piotr.wojtaszczyk(a)timesys.com> Cc: stable(a)vger.kernel.org Signed-off-by: Miquel Raynal <miquel.raynal(a)bootlin.com> Link: https://lore.kernel.org/linux-mtd/20240705115139.126522-1-piotr.wojtaszczyk… diff --git a/drivers/mtd/nand/raw/lpc32xx_mlc.c b/drivers/mtd/nand/raw/lpc32xx_mlc.c index 92cebe871bb4..b9c3adc54c01 100644 --- a/drivers/mtd/nand/raw/lpc32xx_mlc.c +++ b/drivers/mtd/nand/raw/lpc32xx_mlc.c @@ -575,7 +575,7 @@ static int lpc32xx_dma_setup(struct lpc32xx_nand_host *host) dma_cap_mask_t mask; host->dma_chan = dma_request_chan(mtd->dev.parent, "rx-tx"); - if (!host->dma_chan) { + if (IS_ERR(host->dma_chan)) { /* fallback to request using platform data */ if (!host->pdata || !host->pdata->dma_filter) { dev_err(mtd->dev.parent, "no DMA platform data\n"); diff --git a/drivers/mtd/nand/raw/lpc32xx_slc.c b/drivers/mtd/nand/raw/lpc32xx_slc.c index 3b7e3d259785..ade971e4cc3b 100644 --- a/drivers/mtd/nand/raw/lpc32xx_slc.c +++ b/drivers/mtd/nand/raw/lpc32xx_slc.c @@ -722,7 +722,7 @@ static int lpc32xx_nand_dma_setup(struct lpc32xx_nand_host *host) dma_cap_mask_t mask; host->dma_chan = dma_request_chan(mtd->dev.parent, "rx-tx"); - if (!host->dma_chan) { + if (IS_ERR(host->dma_chan)) { /* fallback to request using platform data */ if (!host->pdata || !host->pdata->dma_filter) { dev_err(mtd->dev.parent, "no DMA platform data\n");

1 year, 2 months

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FAILED: patch "[PATCH] mtd: rawnand: lpx32xx: Fix dma_request_chan() error checks" failed to apply to 6.10-stable tree

by gregkh＠linuxfoundation.org

The patch below does not apply to the 6.10-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <stable(a)vger.kernel.org>. To reproduce the conflict and resubmit, you may use the following commands: git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-6.10.y git checkout FETCH_HEAD git cherry-pick -x a503f91a3645651a39baf97f1aed90d5d9f9bda9 # <resolve conflicts, build, test, etc.> git commit -s git send-email --to '<stable(a)vger.kernel.org>' --in-reply-to '2024073057-gonad-crabgrass-4689@gregkh' --subject-prefix 'PATCH 6.10.y' HEAD^.. Possible dependencies: a503f91a3645 ("mtd: rawnand: lpx32xx: Fix dma_request_chan() error checks") 478211867460 ("mtd: rawnand: lpx32xx: Request DMA channels using DT entries") thanks, greg k-h ------------------ original commit in Linus's tree ------------------ From a503f91a3645651a39baf97f1aed90d5d9f9bda9 Mon Sep 17 00:00:00 2001 From: Piotr Wojtaszczyk <piotr.wojtaszczyk(a)timesys.com> Date: Fri, 5 Jul 2024 13:51:35 +0200 Subject: [PATCH] mtd: rawnand: lpx32xx: Fix dma_request_chan() error checks The dma_request_chan() returns error pointer in case of error, while dma_request_channel() returns NULL in case of error therefore different error checks are needed for the two. Fixes: 7326d3fb1ee3 ("mtd: rawnand: lpx32xx: Request DMA channels using DT entries") Signed-off-by: Piotr Wojtaszczyk <piotr.wojtaszczyk(a)timesys.com> Cc: stable(a)vger.kernel.org Signed-off-by: Miquel Raynal <miquel.raynal(a)bootlin.com> Link: https://lore.kernel.org/linux-mtd/20240705115139.126522-1-piotr.wojtaszczyk… diff --git a/drivers/mtd/nand/raw/lpc32xx_mlc.c b/drivers/mtd/nand/raw/lpc32xx_mlc.c index 92cebe871bb4..b9c3adc54c01 100644 --- a/drivers/mtd/nand/raw/lpc32xx_mlc.c +++ b/drivers/mtd/nand/raw/lpc32xx_mlc.c @@ -575,7 +575,7 @@ static int lpc32xx_dma_setup(struct lpc32xx_nand_host *host) dma_cap_mask_t mask; host->dma_chan = dma_request_chan(mtd->dev.parent, "rx-tx"); - if (!host->dma_chan) { + if (IS_ERR(host->dma_chan)) { /* fallback to request using platform data */ if (!host->pdata || !host->pdata->dma_filter) { dev_err(mtd->dev.parent, "no DMA platform data\n"); diff --git a/drivers/mtd/nand/raw/lpc32xx_slc.c b/drivers/mtd/nand/raw/lpc32xx_slc.c index 3b7e3d259785..ade971e4cc3b 100644 --- a/drivers/mtd/nand/raw/lpc32xx_slc.c +++ b/drivers/mtd/nand/raw/lpc32xx_slc.c @@ -722,7 +722,7 @@ static int lpc32xx_nand_dma_setup(struct lpc32xx_nand_host *host) dma_cap_mask_t mask; host->dma_chan = dma_request_chan(mtd->dev.parent, "rx-tx"); - if (!host->dma_chan) { + if (IS_ERR(host->dma_chan)) { /* fallback to request using platform data */ if (!host->pdata || !host->pdata->dma_filter) { dev_err(mtd->dev.parent, "no DMA platform data\n");

1 year, 2 months

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Re: Re: [PATCH] sched/fair: Correct CPU selection from isolated domain

by wujing

> If you're trying to backport something, I think you forgot to Cc stable > and provide the proper upstream commit. > > As is this isn't something I can do anything with. The patch does not > apply to any recent kernel and AFAICT this issue has long since been > fixed. When fixing this bug, I didn't pay much attention to upstream changes. Upon reviewing the history of relevant commits, I found that they have been merged and reverted multiple times: ```bash git log -S 'cpumask_test_cpu(cpu, sched_domain_span(sd))' --oneline \ kernel/sched/fair.c 8aeaffef8c6e sched/fair: Take the scheduling domain into account in select_idle_smt() 3e6efe87cd5c sched/fair: Remove redundant check in select_idle_smt() 3e8c6c9aac42 sched/fair: Remove task_util from effective utilization in feec() c722f35b513f sched/fair: Bring back select_idle_smt(), but differently 6cd56ef1df39 sched/fair: Remove select_idle_smt() df3cb4ea1fb6 sched/fair: Fix wrong cpu selecting from isolated domain ``` The latest upstream commit 8aeaffef8c6e is not applicable to linux-4.19.y. The current patch has been tested on linux-4.19.y and I am looking forward to its inclusion in the stable version.

1 year, 2 months

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[PATCH 6.6-stable 1/2] PCI: Introduce cleanup helpers for device reference counts and locks

by Lukas Wunner

From: Ira Weiny <ira.weiny(a)intel.com> commit ced085ef369af7a2b6da962ec2fbd01339f60693 upstream. The "goto error" pattern is notorious for introducing subtle resource leaks. Use the new cleanup.h helpers for PCI device reference counts and locks. Similar to the new put_device() and device_lock() cleanup helpers, __free(put_device) and guard(device), define the same for PCI devices, __free(pci_dev_put) and guard(pci_dev). These helpers eliminate the need for "goto free;" and "goto unlock;" patterns. For example, A 'struct pci_dev *' instance declared as: struct pci_dev *pdev __free(pci_dev_put) = NULL; ...will automatically call pci_dev_put() if @pdev is non-NULL when @pdev goes out of scope (automatic variable scope). If a function wants to invoke pci_dev_put() on error, but return @pdev on success, it can do: return no_free_ptr(pdev); ...or: return_ptr(pdev); For potential cleanup opportunity there are 587 open-coded calls to pci_dev_put() in the kernel with 65 instances within 10 lines of a goto statement with the CXL driver threatening to add another one. The guard() helper holds the associated lock for the remainder of the current scope in which it was invoked. So, for example: func(...) { if (...) { ... guard(pci_dev); /* pci_dev_lock() invoked here */ ... } /* <- implied pci_dev_unlock() triggered here */ } There are 15 invocations of pci_dev_unlock() in the kernel with 5 instances within 10 lines of a goto statement. Again, the CXL driver is threatening to add another. Introduce these helpers to preclude the addition of new more error prone goto put; / goto unlock; sequences. For now, these helpers are used in drivers/cxl/pci.c to allow ACPI error reports to be fed back into the CXL driver associated with the PCI device identified in the report. Cc: Bjorn Helgaas <bhelgaas(a)google.com> Signed-off-by: Ira Weiny <ira.weiny(a)intel.com> Link: https://lore.kernel.org/r/20231220-cxl-cper-v5-8-1bb8a4ca2c7a@intel.com [djbw: rewrite changelog] Acked-by: Bjorn Helgaas <bhelgaas(a)google.com> Reviewed-by: Jonathan Cameron <Jonathan.Cameron(a)huawei.com> Acked-by: Ard Biesheuvel <ardb(a)kernel.org> Signed-off-by: Dan Williams <dan.j.williams(a)intel.com> Signed-off-by: Lukas Wunner <lukas(a)wunner.de> --- include/linux/pci.h | 2 ++ 1 file changed, 2 insertions(+) diff --git a/include/linux/pci.h b/include/linux/pci.h index 512cb40150df..f14130011621 100644 --- a/include/linux/pci.h +++ b/include/linux/pci.h @@ -1146,6 +1146,7 @@ int pci_get_interrupt_pin(struct pci_dev *dev, struct pci_dev **bridge); u8 pci_common_swizzle(struct pci_dev *dev, u8 *pinp); struct pci_dev *pci_dev_get(struct pci_dev *dev); void pci_dev_put(struct pci_dev *dev); +DEFINE_FREE(pci_dev_put, struct pci_dev *, if (_T) pci_dev_put(_T)) void pci_remove_bus(struct pci_bus *b); void pci_stop_and_remove_bus_device(struct pci_dev *dev); void pci_stop_and_remove_bus_device_locked(struct pci_dev *dev); @@ -1851,6 +1852,7 @@ void pci_cfg_access_unlock(struct pci_dev *dev); void pci_dev_lock(struct pci_dev *dev); int pci_dev_trylock(struct pci_dev *dev); void pci_dev_unlock(struct pci_dev *dev); +DEFINE_GUARD(pci_dev, struct pci_dev *, pci_dev_lock(_T), pci_dev_unlock(_T)) /* * PCI domain support. Sometimes called PCI segment (eg by ACPI), -- 2.43.0

1 year, 2 months

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