March 2018 - Linux-stable-mirror

[PATCH] tpm: fix potential buffer overruns caused by bit glitches on the bus

by Jarkko Sakkinen

From: Jeremy Boone <jeremy.boone(a)nccgroup.trust> commit c8e3e06d252155ad0e38a64a65ebb85638893025 upstream Discrete TPMs are often connected over slow serial buses which, on some platforms, can have glitches causing bit flips. If a bit does flip it could cause an overrun if it's in one of the size parameters, so sanity check that we're not overrunning the provided buffer when doing a memcpy(). Signed-off-by: Jeremy Boone <jeremy.boone(a)nccgroup.trust> Cc: stable(a)vger.kernel.org Signed-off-by: James Bottomley <James.Bottomley(a)HansenPartnership.com> Reviewed-by: Jarkko Sakkinen <jarkko.sakkinen(a)linux.intel.com> Tested-by: Jarkko Sakkinen <jarkko.sakkinen(a)linux.intel.com> Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen(a)linux.intel.com> --- Backport for v4.9 because of the merge conflict. drivers/char/tpm/tpm-interface.c | 5 +++++ drivers/char/tpm/tpm2-cmd.c | 6 ++++++ 2 files changed, 11 insertions(+) diff --git a/drivers/char/tpm/tpm-interface.c b/drivers/char/tpm/tpm-interface.c index d0ac2d56520f..830d7e30e508 100644 --- a/drivers/char/tpm/tpm-interface.c +++ b/drivers/char/tpm/tpm-interface.c @@ -1078,6 +1078,11 @@ int tpm_get_random(u32 chip_num, u8 *out, size_t max) break; recd = be32_to_cpu(tpm_cmd.params.getrandom_out.rng_data_len); + if (recd > num_bytes) { + total = -EFAULT; + break; + } + memcpy(dest, tpm_cmd.params.getrandom_out.rng_data, recd); dest += recd; diff --git a/drivers/char/tpm/tpm2-cmd.c b/drivers/char/tpm/tpm2-cmd.c index 17896d654033..a5780ebe15ef 100644 --- a/drivers/char/tpm/tpm2-cmd.c +++ b/drivers/char/tpm/tpm2-cmd.c @@ -668,6 +668,11 @@ static int tpm2_unseal_cmd(struct tpm_chip *chip, if (!rc) { data_len = be16_to_cpup( (__be16 *) &buf.data[TPM_HEADER_SIZE + 4]); + if (data_len < MIN_KEY_SIZE || data_len > MAX_KEY_SIZE + 1) { + rc = -EFAULT; + goto out; + } + data = &buf.data[TPM_HEADER_SIZE + 6]; memcpy(payload->key, data, data_len - 1); @@ -675,6 +680,7 @@ static int tpm2_unseal_cmd(struct tpm_chip *chip, payload->migratable = data[data_len - 1]; } +out: tpm_buf_destroy(&buf); return rc; } -- 2.15.1

6 years, 10 months

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[PATCH] Change synchronize_rcu() in scsi_device_quiesce() into synchronize_sched()

by Bart Van Assche

Since blk_queue_enter() uses rcu_read_lock_sched() scsi_device_quiesce() must use synchronize_sched(). Reported-by: Tejun Heo <tj(a)kernel.org> Fixes: 3a0a529971ec ("block, scsi: Make SCSI quiesce and resume work reliably") Signed-off-by: Bart Van Assche <bart.vanassche(a)wdc.com> Cc: Hannes Reinecke <hare(a)suse.com> Cc: Ming Lei <ming.lei(a)redhat.com> Cc: Christoph Hellwig <hch(a)lst.de> Cc: Johannes Thumshirn <jthumshirn(a)suse.de> Cc: Tejun Heo <tj(a)kernel.org> Cc: Oleksandr Natalenko <oleksandr(a)natalenko.name> Cc: Martin Steigerwald <martin(a)lichtvoll.de> Cc: stable(a)vger.kernel.org # v4.15 --- drivers/scsi/scsi_lib.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/scsi/scsi_lib.c b/drivers/scsi/scsi_lib.c index 1d83f29aee74..0b99ee2fbbb5 100644 --- a/drivers/scsi/scsi_lib.c +++ b/drivers/scsi/scsi_lib.c @@ -3014,7 +3014,7 @@ scsi_device_quiesce(struct scsi_device *sdev) * unfreeze even if the queue was already frozen before this function * was called. See also https://lwn.net/Articles/573497/. */ - synchronize_rcu(); + synchronize_sched(); blk_mq_unfreeze_queue(q); mutex_lock(&sdev->state_mutex); -- 2.16.2

6 years, 10 months

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[PATCH v3] usb: dwc3: pci: Properly cleanup resource

by Thinh Nguyen

Platform device is allocated before adding resources. Make sure to properly cleanup on error case. Cc: <stable(a)vger.kernel.org> Fixes: f1c7e7108109 ("usb: dwc3: convert to pcim_enable_device()") Signed-off-by: Thinh Nguyen <thinhn(a)synopsys.com> --- Changes in v3: - Include Cc: <stable(a)vger.kernel.org> Changes in v2: - Separate from patch series "usb: dwc3: pci: Make device properties customizable" drivers/usb/dwc3/dwc3-pci.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/usb/dwc3/dwc3-pci.c b/drivers/usb/dwc3/dwc3-pci.c index 3ba11136ebf0..c961a94d136b 100644 --- a/drivers/usb/dwc3/dwc3-pci.c +++ b/drivers/usb/dwc3/dwc3-pci.c @@ -222,7 +222,7 @@ static int dwc3_pci_probe(struct pci_dev *pci, ret = platform_device_add_resources(dwc->dwc3, res, ARRAY_SIZE(res)); if (ret) { dev_err(dev, "couldn't add resources to dwc3 device\n"); - return ret; + goto err; } dwc->pci = pci; -- 2.11.0

6 years, 10 months

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[merged] drivers-infiniband-ulp-srpt-ib_srptc-fix-build-with-gcc-444.patch removed from -mm tree

by akpm＠linux-foundation.org

The patch titled Subject: drivers/infiniband/ulp/srpt/ib_srpt.c: fix build with gcc-4.4.4 has been removed from the -mm tree. Its filename was drivers-infiniband-ulp-srpt-ib_srptc-fix-build-with-gcc-444.patch This patch was dropped because it was merged into mainline or a subsystem tree ------------------------------------------------------ From: Andrew Morton <akpm(a)linux-foundation.org> Subject: drivers/infiniband/ulp/srpt/ib_srpt.c: fix build with gcc-4.4.4 gcc-4.4.4 has issues with initialization of anonymous unions: drivers/infiniband/ulp/srpt/ib_srpt.c: In function 'srpt_zerolength_write': drivers/infiniband/ulp/srpt/ib_srpt.c:854: error: unknown field 'wr_cqe' specified in initializer drivers/infiniband/ulp/srpt/ib_srpt.c:854: warning: initialization makes integer from pointer without a cast Work aound this. Fixes: 2a78cb4db487 ("IB/srpt: Fix an out-of-bounds stack access in srpt_zerolength_write()") Cc: Bart Van Assche <bart.vanassche(a)wdc.com> Cc: Christoph Hellwig <hch(a)lst.de> Cc: Jason Gunthorpe <jgg(a)mellanox.com> Cc: <stable(a)vger.kernel.org> Signed-off-by: Andrew Morton <akpm(a)linux-foundation.org> --- drivers/infiniband/ulp/srpt/ib_srpt.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff -puN drivers/infiniband/ulp/srpt/ib_srpt.c~drivers-infiniband-ulp-srpt-ib_srptc-fix-build-with-gcc-444 drivers/infiniband/ulp/srpt/ib_srpt.c --- a/drivers/infiniband/ulp/srpt/ib_srpt.c~drivers-infiniband-ulp-srpt-ib_srptc-fix-build-with-gcc-444 +++ a/drivers/infiniband/ulp/srpt/ib_srpt.c @@ -850,8 +850,9 @@ static int srpt_zerolength_write(struct struct ib_send_wr *bad_wr; struct ib_rdma_wr wr = { .wr = { + .next = NULL, + { .wr_cqe = &ch->zw_cqe, }, .opcode = IB_WR_RDMA_WRITE, - .wr_cqe = &ch->zw_cqe, .send_flags = IB_SEND_SIGNALED, } }; _ Patches currently in -mm which might be from akpm(a)linux-foundation.org are i-need-old-gcc.patch mm-mempolicy-avoid-use-uninitialized-preferred_node-fix.patch hugetlbfs-check-for-pgoff-value-overflow-v3-fix.patch hugetlbfs-check-for-pgoff-value-overflow-v3-fix-fix.patch mm-vmalloc-add-interfaces-to-free-unmapped-page-table-fix.patch arm-arch-arm-include-asm-pageh-needs-personalityh.patch ocfs2-without-quota-support-try-to-avoid-calling-quota-recovery-checkpatch-fixes.patch mm.patch mm-initialize-pages-on-demand-during-boot-fix-4-fix.patch mm-initialize-pages-on-demand-during-boot-v5-fix.patch mm-initialize-pages-on-demand-during-boot-v6-checkpatch-fixes.patch direct-io-minor-cleanups-in-do_blockdev_direct_io-fix.patch mm-fix-races-between-swapoff-and-flush-dcache-fix.patch headers-untangle-kmemleakh-from-mmh-fix.patch mm-vmscan-dont-mess-with-pgdat-flags-in-memcg-reclaim-checkpatch-fixes.patch list_lru-prefetch-neighboring-list-entries-before-acquiring-lock-fix.patch mm-oom-cgroup-aware-oom-killer-fix.patch mm-oom-docs-describe-the-cgroup-aware-oom-killer-fix-2-fix.patch proc-add-seq_put_decimal_ull_width-to-speed-up-proc-pid-smaps-fix.patch linux-next-rejects.patch linux-next-fixup.patch fs-fsnotify-account-fsnotify-metadata-to-kmemcg-fix.patch kernel-forkc-export-kernel_thread-to-modules.patch slab-leaks3-default-y.patch

6 years, 10 months

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[merged] drivers-infiniband-core-verbsc-fix-build-with-gcc-444.patch removed from -mm tree

by akpm＠linux-foundation.org

The patch titled Subject: drivers/infiniband/core/verbs.c: fix build with gcc-4.4.4 has been removed from the -mm tree. Its filename was drivers-infiniband-core-verbsc-fix-build-with-gcc-444.patch This patch was dropped because it was merged into mainline or a subsystem tree ------------------------------------------------------ From: Andrew Morton <akpm(a)linux-foundation.org> Subject: drivers/infiniband/core/verbs.c: fix build with gcc-4.4.4 gcc-4.4.4 has issues with initialization of anonymous unions. drivers/infiniband/core/verbs.c: In function '__ib_drain_sq': drivers/infiniband/core/verbs.c:2204: error: unknown field 'wr_cqe' specified in initializer drivers/infiniband/core/verbs.c:2204: warning: initialization makes integer from pointer without a cast Work around this. Fixes: a1ae7d0345edd5 ("RDMA/core: Avoid that ib_drain_qp() triggers an out-of-bounds stack access") Cc: Bart Van Assche <bart.vanassche(a)wdc.com> Cc: Steve Wise <swise(a)opengridcomputing.com> Cc: Sagi Grimberg <sagi(a)grimberg.me> Cc: Jason Gunthorpe <jgg(a)mellanox.com> Cc: <stable(a)vger.kernel.org> Signed-off-by: Andrew Morton <akpm(a)linux-foundation.org> --- drivers/infiniband/core/verbs.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff -puN drivers/infiniband/core/verbs.c~drivers-infiniband-core-verbsc-fix-build-with-gcc-444 drivers/infiniband/core/verbs.c --- a/drivers/infiniband/core/verbs.c~drivers-infiniband-core-verbsc-fix-build-with-gcc-444 +++ a/drivers/infiniband/core/verbs.c @@ -2200,8 +2200,9 @@ static void __ib_drain_sq(struct ib_qp * struct ib_send_wr *bad_swr; struct ib_rdma_wr swr = { .wr = { + .next = NULL, + { .wr_cqe = &sdrain.cqe, }, .opcode = IB_WR_RDMA_WRITE, - .wr_cqe = &sdrain.cqe, }, }; int ret; _ Patches currently in -mm which might be from akpm(a)linux-foundation.org are i-need-old-gcc.patch mm-mempolicy-avoid-use-uninitialized-preferred_node-fix.patch hugetlbfs-check-for-pgoff-value-overflow-v3-fix.patch hugetlbfs-check-for-pgoff-value-overflow-v3-fix-fix.patch mm-vmalloc-add-interfaces-to-free-unmapped-page-table-fix.patch arm-arch-arm-include-asm-pageh-needs-personalityh.patch ocfs2-without-quota-support-try-to-avoid-calling-quota-recovery-checkpatch-fixes.patch mm.patch mm-initialize-pages-on-demand-during-boot-fix-4-fix.patch mm-initialize-pages-on-demand-during-boot-v5-fix.patch mm-initialize-pages-on-demand-during-boot-v6-checkpatch-fixes.patch direct-io-minor-cleanups-in-do_blockdev_direct_io-fix.patch mm-fix-races-between-swapoff-and-flush-dcache-fix.patch headers-untangle-kmemleakh-from-mmh-fix.patch mm-vmscan-dont-mess-with-pgdat-flags-in-memcg-reclaim-checkpatch-fixes.patch list_lru-prefetch-neighboring-list-entries-before-acquiring-lock-fix.patch mm-oom-cgroup-aware-oom-killer-fix.patch mm-oom-docs-describe-the-cgroup-aware-oom-killer-fix-2-fix.patch proc-add-seq_put_decimal_ull_width-to-speed-up-proc-pid-smaps-fix.patch linux-next-rejects.patch linux-next-fixup.patch fs-fsnotify-account-fsnotify-metadata-to-kmemcg-fix.patch kernel-forkc-export-kernel_thread-to-modules.patch slab-leaks3-default-y.patch

6 years, 10 months

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[PATCH 4.9 0/2] Clear LED_BLINK_SW flag in led_blink_set()

by Jacek Anaszewski

The fix for brightness setting when setting delay_off=0 introduces a regression and has truncated commit message. Revert that patch and apply the one-line change required to fix the original issue in the way appropriate for the 4.9 code base. Thanks, Jacek Anaszewski Jacek Anaszewski (2): Revert "led: core: Fix brightness setting when setting delay_off=0" led: core: Clear LED_BLINK_SW flag in led_blink_set() drivers/leds/led-core.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) -- 2.1.4

6 years, 10 months

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[PATCH v2] block: Change a rcu_read_{lock, unlock}_sched() pair into rcu_read_{lock, unlock}()

by Bart Van Assche

scsi_device_quiesce() uses synchronize_rcu() to guarantee that the effect of blk_set_preempt_only() will be visible for percpu_ref_tryget() calls that occur after the queue unfreeze by using the approach explained in https://lwn.net/Articles/573497/. The rcu read lock and unlock calls in blk_queue_enter() form a pair with the synchronize_rcu() call in scsi_device_quiesce(). Both scsi_device_quiesce() and blk_queue_enter() must either use regular RCU or RCU-sched. Since neither the RCU-protected code in blk_queue_enter() nor blk_queue_usage_counter_release() sleeps, regular RCU protection is sufficient. Note: scsi_device_quiesce() does not have to be modified since it already uses synchronize_rcu(). Reported-by: Tejun Heo <tj(a)kernel.org> Fixes: 3a0a529971ec ("block, scsi: Make SCSI quiesce and resume work reliably") Signed-off-by: Bart Van Assche <bart.vanassche(a)wdc.com> Acked-by: Tejun Heo <tj(a)kernel.org> Cc: Tejun Heo <tj(a)kernel.org> Cc: Hannes Reinecke <hare(a)suse.com> Cc: Ming Lei <ming.lei(a)redhat.com> Cc: Christoph Hellwig <hch(a)lst.de> Cc: Johannes Thumshirn <jthumshirn(a)suse.de> Cc: Oleksandr Natalenko <oleksandr(a)natalenko.name> Cc: Martin Steigerwald <martin(a)lichtvoll.de> Cc: stable(a)vger.kernel.org # v4.15 --- Changes between v1 and v2: - Explained in the interaction between scsi_device_quiesce() and blk_queue_enter() in the patch description. block/blk-core.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/block/blk-core.c b/block/blk-core.c index 5e88c579e896..a0f675f84f86 100644 --- a/block/blk-core.c +++ b/block/blk-core.c @@ -917,7 +917,7 @@ int blk_queue_enter(struct request_queue *q, blk_mq_req_flags_t flags) bool success = false; int ret; - rcu_read_lock_sched(); + rcu_read_lock(); if (percpu_ref_tryget_live(&q->q_usage_counter)) { /* * The code that sets the PREEMPT_ONLY flag is @@ -930,7 +930,7 @@ int blk_queue_enter(struct request_queue *q, blk_mq_req_flags_t flags) percpu_ref_put(&q->q_usage_counter); } } - rcu_read_unlock_sched(); + rcu_read_unlock(); if (success) return 0; -- 2.16.2

6 years, 10 months

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patch "staging: comedi: ni_mio_common: ack ai fifo error interrupts." added to staging-testing

by gregkh＠linuxfoundation.org

This is a note to let you know that I've just added the patch titled staging: comedi: ni_mio_common: ack ai fifo error interrupts. to my staging git tree which can be found at git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging.git in the staging-testing branch. The patch will show up in the next release of the linux-next tree (usually sometime within the next 24 hours during the week.) The patch will be merged to the staging-next branch sometime soon, after it passes testing, and the merge window is open. If you have any questions about this process, please let me know. >From e1d9fc04c41840a4688ef6ce90b6dcca157ea4d7 Mon Sep 17 00:00:00 2001 From: Frank Mori Hess <fmh6jj(a)gmail.com> Date: Thu, 15 Mar 2018 10:25:44 +0000 Subject: staging: comedi: ni_mio_common: ack ai fifo error interrupts. Ack ai fifo error interrupts in interrupt handler to clear interrupt after fifo overflow. It should prevent lock-ups after the ai fifo overflows. Cc: <stable(a)vger.kernel.org> # v4.2+ Signed-off-by: Frank Mori Hess <fmh6jj(a)gmail.com> Signed-off-by: Ian Abbott <abbotti(a)mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> --- drivers/staging/comedi/drivers/ni_mio_common.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/staging/comedi/drivers/ni_mio_common.c b/drivers/staging/comedi/drivers/ni_mio_common.c index d6eb55b41814..e40a2c0a9543 100644 --- a/drivers/staging/comedi/drivers/ni_mio_common.c +++ b/drivers/staging/comedi/drivers/ni_mio_common.c @@ -1275,6 +1275,8 @@ static void ack_a_interrupt(struct comedi_device *dev, unsigned short a_status) ack |= NISTC_INTA_ACK_AI_START; if (a_status & NISTC_AI_STATUS1_STOP) ack |= NISTC_INTA_ACK_AI_STOP; + if (a_status & NISTC_AI_STATUS1_OVER) + ack |= NISTC_INTA_ACK_AI_ERR; if (ack) ni_stc_writew(dev, ack, NISTC_INTA_ACK_REG); } -- 2.16.2

6 years, 10 months

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[PATCH] xprtrdma: Fix corner cases when handling device removal

by Chuck Lever

Michal Kalderon has found some corner cases around device unload with active NFS mounts that I didn't have the imagination to test when xprtrdma device removal was added last year. - The ULP device removal handler is responsible for deallocating the PD. That wasn't clear to me initially, and my own testing suggested it was not necessary, but that is incorrect. - The transport destruction path can no longer assume that there is a valid ID. - When destroying a transport, ensure that ib_free_cq() is not invoked on a CQ that was already released. Reported-by: Michal Kalderon <Michal.Kalderon(a)cavium.com> Fixes: bebd031866ca ("xprtrdma: Support unplugging an HCA from ...") Signed-off-by: Chuck Lever <chuck.lever(a)oracle.com> Cc: stable(a)vger.kernel.org --- net/sunrpc/xprtrdma/verbs.c | 13 +++++++++---- 1 file changed, 9 insertions(+), 4 deletions(-) diff --git a/net/sunrpc/xprtrdma/verbs.c b/net/sunrpc/xprtrdma/verbs.c index fe518b3..5e3afed 100644 --- a/net/sunrpc/xprtrdma/verbs.c +++ b/net/sunrpc/xprtrdma/verbs.c @@ -250,7 +250,6 @@ wait_for_completion(&ia->ri_remove_done); ia->ri_id = NULL; - ia->ri_pd = NULL; ia->ri_device = NULL; /* Return 1 to ensure the core destroys the id. */ return 1; @@ -448,7 +447,9 @@ ia->ri_id->qp = NULL; } ib_free_cq(ep->rep_attr.recv_cq); + ep->rep_attr.recv_cq = NULL; ib_free_cq(ep->rep_attr.send_cq); + ep->rep_attr.send_cq = NULL; /* The ULP is responsible for ensuring all DMA * mappings and MRs are gone. @@ -461,6 +462,8 @@ rpcrdma_dma_unmap_regbuf(req->rl_recvbuf); } rpcrdma_mrs_destroy(buf); + ib_dealloc_pd(ia->ri_pd); + ia->ri_pd = NULL; /* Allow waiters to continue */ complete(&ia->ri_remove_done); @@ -628,14 +631,16 @@ { cancel_delayed_work_sync(&ep->rep_connect_worker); - if (ia->ri_id->qp) { + if (ia->ri_id && ia->ri_id->qp) { rpcrdma_ep_disconnect(ep, ia); rdma_destroy_qp(ia->ri_id); ia->ri_id->qp = NULL; } - ib_free_cq(ep->rep_attr.recv_cq); - ib_free_cq(ep->rep_attr.send_cq); + if (ep->rep_attr.recv_cq) + ib_free_cq(ep->rep_attr.recv_cq); + if (ep->rep_attr.send_cq) + ib_free_cq(ep->rep_attr.send_cq); } /* Re-establish a connection after a device removal event.

6 years, 10 months

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[PATCH] block: Change a rcu_read_{lock, unlock}_sched() pair into rcu_read_{lock, unlock}()

by Bart Van Assche

Since neither the RCU-protected code in blk_queue_enter() nor blk_queue_usage_counter_release() sleeps, regular RCU protection is sufficient. Note: scsi_device_quiesce() does not have to be modified since it already uses synchronize_rcu(). Reported-by: Tejun Heo <tj(a)kernel.org> Fixes: 3a0a529971ec ("block, scsi: Make SCSI quiesce and resume work reliably") Signed-off-by: Bart Van Assche <bart.vanassche(a)wdc.com> Cc: Hannes Reinecke <hare(a)suse.com> Cc: Ming Lei <ming.lei(a)redhat.com> Cc: Christoph Hellwig <hch(a)lst.de> Cc: Johannes Thumshirn <jthumshirn(a)suse.de> Cc: Tejun Heo <tj(a)kernel.org> Cc: Oleksandr Natalenko <oleksandr(a)natalenko.name> Cc: Martin Steigerwald <martin(a)lichtvoll.de> Cc: stable(a)vger.kernel.org # v4.15 --- block/blk-core.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/block/blk-core.c b/block/blk-core.c index 5e88c579e896..a0f675f84f86 100644 --- a/block/blk-core.c +++ b/block/blk-core.c @@ -917,7 +917,7 @@ int blk_queue_enter(struct request_queue *q, blk_mq_req_flags_t flags) bool success = false; int ret; - rcu_read_lock_sched(); + rcu_read_lock(); if (percpu_ref_tryget_live(&q->q_usage_counter)) { /* * The code that sets the PREEMPT_ONLY flag is @@ -930,7 +930,7 @@ int blk_queue_enter(struct request_queue *q, blk_mq_req_flags_t flags) percpu_ref_put(&q->q_usage_counter); } } - rcu_read_unlock_sched(); + rcu_read_unlock(); if (success) return 0; -- 2.16.2

6 years, 10 months

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