From: Sasha Levin <sashal@kernel.org>
To: linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc: Trond Myklebust <trond.myklebust@hammerspace.com>,
Sasha Levin <sashal@kernel.org>,
linux-nfs@vger.kernel.org
Subject: [PATCH AUTOSEL 5.12 18/33] NFSv4: Fix second deadlock in nfs4_evict_inode()
Date: Tue, 15 Jun 2021 11:48:09 -0400 [thread overview]
Message-ID: <20210615154824.62044-18-sashal@kernel.org> (raw)
In-Reply-To: <20210615154824.62044-1-sashal@kernel.org>
From: Trond Myklebust <trond.myklebust@hammerspace.com>
[ Upstream commit c3aba897c6e67fa464ec02b1f17911577d619713 ]
If the inode is being evicted but has to return a layout first, then
that too can cause a deadlock in the corner case where the server
reboots.
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
fs/nfs/nfs4proc.c | 9 +++++++--
1 file changed, 7 insertions(+), 2 deletions(-)
diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c
index 056d98d1d1a7..420d34461bb8 100644
--- a/fs/nfs/nfs4proc.c
+++ b/fs/nfs/nfs4proc.c
@@ -9628,15 +9628,20 @@ int nfs4_proc_layoutreturn(struct nfs4_layoutreturn *lrp, bool sync)
&task_setup_data.rpc_client, &msg);
dprintk("--> %s\n", __func__);
+ lrp->inode = nfs_igrab_and_active(lrp->args.inode);
if (!sync) {
- lrp->inode = nfs_igrab_and_active(lrp->args.inode);
if (!lrp->inode) {
nfs4_layoutreturn_release(lrp);
return -EAGAIN;
}
task_setup_data.flags |= RPC_TASK_ASYNC;
}
- nfs4_init_sequence(&lrp->args.seq_args, &lrp->res.seq_res, 1, 0);
+ if (!lrp->inode)
+ nfs4_init_sequence(&lrp->args.seq_args, &lrp->res.seq_res, 1,
+ 1);
+ else
+ nfs4_init_sequence(&lrp->args.seq_args, &lrp->res.seq_res, 1,
+ 0);
task = rpc_run_task(&task_setup_data);
if (IS_ERR(task))
return PTR_ERR(task);
--
2.30.2
next prev parent reply other threads:[~2021-06-15 15:49 UTC|newest]
Thread overview: 39+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-06-15 15:47 [PATCH AUTOSEL 5.12 01/33] regulator: cros-ec: Fix error code in dev_err message Sasha Levin
2021-06-15 15:47 ` [PATCH AUTOSEL 5.12 02/33] regulator: max77620: Silence deferred probe error Sasha Levin
2021-06-15 15:54 ` Mark Brown
2021-06-20 12:55 ` Sasha Levin
2021-06-21 10:40 ` Mark Brown
2021-06-21 18:03 ` Sasha Levin
2021-06-15 15:47 ` [PATCH AUTOSEL 5.12 03/33] regulator: bd70528: Fix off-by-one for buck123 .n_voltages setting Sasha Levin
2021-06-15 15:47 ` [PATCH AUTOSEL 5.12 04/33] platform/x86: thinkpad_acpi: Add X1 Carbon Gen 9 second fan support Sasha Levin
2021-06-15 15:47 ` [PATCH AUTOSEL 5.12 05/33] ASoC: rt5659: Fix the lost powers for the HDA header Sasha Levin
2021-06-15 15:47 ` [PATCH AUTOSEL 5.12 06/33] phy: phy-mtk-tphy: Fix some resource leaks in mtk_phy_init() Sasha Levin
2021-06-15 15:47 ` [PATCH AUTOSEL 5.12 07/33] ASoC: fsl-asoc-card: Set .owner attribute when registering card Sasha Levin
2021-06-15 15:47 ` [PATCH AUTOSEL 5.12 08/33] regulator: mt6315: Fix function prototype for mt6315_map_mode Sasha Levin
2021-06-15 15:48 ` [PATCH AUTOSEL 5.12 09/33] regulator: rtmv20: Fix to make regcache value first reading back from HW Sasha Levin
2021-06-15 15:48 ` [PATCH AUTOSEL 5.12 10/33] NFSv4: nfs4_proc_set_acl needs to restore NFS_CAP_UIDGID_NOMAP on error Sasha Levin
2021-06-15 15:48 ` [PATCH AUTOSEL 5.12 11/33] ASoC: AMD Renoir - add DMI entry for Lenovo 2020 AMD platforms Sasha Levin
2021-06-15 15:56 ` Mark Brown
2021-06-20 12:56 ` Sasha Levin
2021-06-15 15:48 ` [PATCH AUTOSEL 5.12 12/33] spi: spi-zynq-qspi: Fix some wrong goto jumps & missing error code Sasha Levin
2021-06-15 15:48 ` [PATCH AUTOSEL 5.12 13/33] sched/pelt: Ensure that *_sum is always synced with *_avg Sasha Levin
2021-06-15 15:48 ` [PATCH AUTOSEL 5.12 14/33] ASoC: AMD Renoir: Remove fix for DMI entry on Lenovo 2020 platforms Sasha Levin
2021-06-15 15:48 ` [PATCH AUTOSEL 5.12 15/33] ASoC: tas2562: Fix TDM_CFG0_SAMPRATE values Sasha Levin
2021-06-15 15:48 ` [PATCH AUTOSEL 5.12 16/33] regulator: hi6421v600: Fix .vsel_mask setting Sasha Levin
2021-06-15 15:48 ` [PATCH AUTOSEL 5.12 17/33] spi: stm32-qspi: Always wait BUSY bit to be cleared in stm32_qspi_wait_cmd() Sasha Levin
2021-06-15 15:48 ` Sasha Levin [this message]
2021-06-15 15:48 ` [PATCH AUTOSEL 5.12 19/33] regulator: rt4801: Fix NULL pointer dereference if priv->enable_gpios is NULL Sasha Levin
2021-06-15 15:48 ` [PATCH AUTOSEL 5.12 20/33] ASoC: rt5682: Fix the fast discharge for headset unplugging in soundwire mode Sasha Levin
2021-06-15 15:48 ` [PATCH AUTOSEL 5.12 21/33] pinctrl: ralink: rt2880: avoid to error in calls is pin is already enabled Sasha Levin
2021-06-15 15:48 ` [PATCH AUTOSEL 5.12 22/33] drm/sun4i: dw-hdmi: Make HDMI PHY into a platform device Sasha Levin
2021-06-15 15:48 ` [PATCH AUTOSEL 5.12 23/33] ASoC: qcom: lpass-cpu: Fix pop noise during audio capture begin Sasha Levin
2021-06-15 15:48 ` [PATCH AUTOSEL 5.12 24/33] scsi: core: Fix error handling of scsi_host_alloc() Sasha Levin
2021-06-15 15:48 ` [PATCH AUTOSEL 5.12 25/33] scsi: core: Fix failure handling of scsi_add_host_with_dma() Sasha Levin
2021-06-15 15:48 ` [PATCH AUTOSEL 5.12 26/33] scsi: core: Put .shost_dev in failure path if host state changes to RUNNING Sasha Levin
2021-06-15 15:48 ` [PATCH AUTOSEL 5.12 27/33] scsi: core: Only put parent device if host state differs from SHOST_CREATED Sasha Levin
2021-06-15 15:48 ` [PATCH AUTOSEL 5.12 28/33] radeon: use memcpy_to/fromio for UVD fw upload Sasha Levin
2021-06-15 15:48 ` [PATCH AUTOSEL 5.12 29/33] kvm: avoid speculation-based attacks from out-of-range memslot accesses Sasha Levin
2021-06-15 15:48 ` [PATCH AUTOSEL 5.12 30/33] kvm: fix previous commit for 32-bit builds Sasha Levin
2021-06-15 15:48 ` [PATCH AUTOSEL 5.12 31/33] hwmon: (scpi-hwmon) shows the negative temperature properly Sasha Levin
2021-06-15 15:48 ` [PATCH AUTOSEL 5.12 32/33] riscv: code patching only works on !XIP_KERNEL Sasha Levin
2021-06-15 15:48 ` [PATCH AUTOSEL 5.12 33/33] mm: relocate 'write_protect_seq' in struct mm_struct Sasha Levin
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