From: Sasha Levin <sashal@kernel.org>
To: linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc: Bob Peterson <rpeterso@redhat.com>,
Andreas Gruenbacher <agruenba@redhat.com>,
Sasha Levin <sashal@kernel.org>,
cluster-devel@redhat.com
Subject: [PATCH AUTOSEL 5.4 10/42] gfs2: Free rd_bits later in gfs2_clear_rgrpd to fix use-after-free
Date: Mon, 9 Nov 2020 22:54:08 -0500 [thread overview]
Message-ID: <20201110035440.424258-10-sashal@kernel.org> (raw)
In-Reply-To: <20201110035440.424258-1-sashal@kernel.org>
From: Bob Peterson <rpeterso@redhat.com>
[ Upstream commit d0f17d3883f1e3f085d38572c2ea8edbd5150172 ]
Function gfs2_clear_rgrpd calls kfree(rgd->rd_bits) before calling
return_all_reservations, but return_all_reservations still dereferences
rgd->rd_bits in __rs_deltree. Fix that by moving the call to kfree below the
call to return_all_reservations.
Signed-off-by: Bob Peterson <rpeterso@redhat.com>
Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
fs/gfs2/rgrp.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/fs/gfs2/rgrp.c b/fs/gfs2/rgrp.c
index 2466bb44a23c5..e23735084ad17 100644
--- a/fs/gfs2/rgrp.c
+++ b/fs/gfs2/rgrp.c
@@ -736,9 +736,9 @@ void gfs2_clear_rgrpd(struct gfs2_sbd *sdp)
}
gfs2_free_clones(rgd);
+ return_all_reservations(rgd);
kfree(rgd->rd_bits);
rgd->rd_bits = NULL;
- return_all_reservations(rgd);
kmem_cache_free(gfs2_rgrpd_cachep, rgd);
}
}
--
2.27.0
next prev parent reply other threads:[~2020-11-10 4:03 UTC|newest]
Thread overview: 42+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-11-10 3:53 [PATCH AUTOSEL 5.4 01/42] ASoC: qcom: sdm845: set driver name correctly Sasha Levin
2020-11-10 3:54 ` [PATCH AUTOSEL 5.4 02/42] ASoC: cs42l51: manage mclk shutdown delay Sasha Levin
2020-11-10 3:54 ` [PATCH AUTOSEL 5.4 03/42] usb: dwc3: pci: add support for the Intel Alder Lake-S Sasha Levin
2020-11-10 3:54 ` [PATCH AUTOSEL 5.4 04/42] opp: Reduce the size of critical section in _opp_table_kref_release() Sasha Levin
2020-11-10 3:54 ` [PATCH AUTOSEL 5.4 05/42] usb: gadget: goku_udc: fix potential crashes in probe Sasha Levin
2020-11-10 3:54 ` [PATCH AUTOSEL 5.4 06/42] selftests/ftrace: check for do_sys_openat2 in user-memory test Sasha Levin
2020-11-10 3:54 ` [PATCH AUTOSEL 5.4 07/42] selftests: pidfd: fix compilation errors due to wait.h Sasha Levin
2020-11-10 3:54 ` [PATCH AUTOSEL 5.4 08/42] ALSA: hda: Separate runtime and system suspend Sasha Levin
2020-11-10 3:54 ` [PATCH AUTOSEL 5.4 09/42] ALSA: hda: Reinstate runtime_allow() for all hda controllers Sasha Levin
2020-11-10 3:54 ` Sasha Levin [this message]
2020-11-10 3:54 ` [PATCH AUTOSEL 5.4 11/42] gfs2: Add missing truncate_inode_pages_final for sd_aspace Sasha Levin
2020-11-10 3:54 ` [PATCH AUTOSEL 5.4 12/42] gfs2: check for live vs. read-only file system in gfs2_fitrim Sasha Levin
2020-11-10 3:54 ` [PATCH AUTOSEL 5.4 13/42] scsi: hpsa: Fix memory leak in hpsa_init_one() Sasha Levin
2020-11-10 3:54 ` [PATCH AUTOSEL 5.4 14/42] drm/amdgpu: perform srbm soft reset always on SDMA resume Sasha Levin
2020-11-10 3:54 ` [PATCH AUTOSEL 5.4 15/42] drm/amd/pm: perform SMC reset on suspend/hibernation Sasha Levin
2020-11-10 3:54 ` [PATCH AUTOSEL 5.4 16/42] drm/amd/pm: do not use ixFEATURE_STATUS for checking smc running Sasha Levin
2020-11-10 3:54 ` [PATCH AUTOSEL 5.4 17/42] mac80211: fix use of skb payload instead of header Sasha Levin
2020-11-10 3:54 ` [PATCH AUTOSEL 5.4 18/42] cfg80211: initialize wdev data earlier Sasha Levin
2020-11-10 3:54 ` [PATCH AUTOSEL 5.4 19/42] mac80211: always wind down STA state Sasha Levin
2020-11-10 3:54 ` [PATCH AUTOSEL 5.4 20/42] cfg80211: regulatory: Fix inconsistent format argument Sasha Levin
2020-11-10 3:54 ` [PATCH AUTOSEL 5.4 21/42] tracing: Fix the checking of stackidx in __ftrace_trace_stack Sasha Levin
2020-11-10 3:54 ` [PATCH AUTOSEL 5.4 22/42] scsi: scsi_dh_alua: Avoid crash during alua_bus_detach() Sasha Levin
2020-11-10 3:54 ` [PATCH AUTOSEL 5.4 23/42] scsi: mpt3sas: Fix timeouts observed while reenabling IRQ Sasha Levin
2020-11-10 3:54 ` [PATCH AUTOSEL 5.4 24/42] nvme: introduce nvme_sync_io_queues Sasha Levin
2020-11-10 3:54 ` [PATCH AUTOSEL 5.4 25/42] nvme-rdma: avoid race between time out and tear down Sasha Levin
2020-11-10 3:54 ` [PATCH AUTOSEL 5.4 26/42] nvme-tcp: " Sasha Levin
2020-11-10 3:54 ` [PATCH AUTOSEL 5.4 27/42] nvme-rdma: avoid repeated request completion Sasha Levin
2020-11-10 3:54 ` [PATCH AUTOSEL 5.4 28/42] nvme-tcp: " Sasha Levin
2020-11-10 3:54 ` [PATCH AUTOSEL 5.4 29/42] iommu/amd: Increase interrupt remapping table limit to 512 entries Sasha Levin
2020-11-10 3:54 ` [PATCH AUTOSEL 5.4 30/42] s390/smp: move rcu_cpu_starting() earlier Sasha Levin
2020-11-10 3:54 ` [PATCH AUTOSEL 5.4 31/42] vfio: platform: fix reference leak in vfio_platform_open Sasha Levin
2020-11-10 3:54 ` [PATCH AUTOSEL 5.4 32/42] vfio/pci: Bypass IGD init in case of -ENODEV Sasha Levin
2020-11-10 3:54 ` [PATCH AUTOSEL 5.4 33/42] i2c: mediatek: move dma reset before i2c reset Sasha Levin
2020-11-10 3:54 ` [PATCH AUTOSEL 5.4 34/42] net: usb: qmi_wwan: add Telit LE910Cx 0x1230 composition Sasha Levin
2020-11-10 3:54 ` [PATCH AUTOSEL 5.4 35/42] amd/amdgpu: Disable VCN DPG mode for Picasso Sasha Levin
2020-11-10 3:54 ` [PATCH AUTOSEL 5.4 36/42] kprobes: Tell lockdep about kprobe nesting Sasha Levin
2020-11-10 3:54 ` [PATCH AUTOSEL 5.4 37/42] selftests: proc: fix warning: _GNU_SOURCE redefined Sasha Levin
2020-11-10 3:54 ` [PATCH AUTOSEL 5.4 38/42] riscv: Set text_offset correctly for M-Mode Sasha Levin
2020-11-10 3:54 ` [PATCH AUTOSEL 5.4 39/42] i2c: sh_mobile: implement atomic transfers Sasha Levin
2020-11-10 3:54 ` [PATCH AUTOSEL 5.4 40/42] tpm_tis: Disable interrupts on ThinkPad T490s Sasha Levin
2020-11-10 3:54 ` [PATCH AUTOSEL 5.4 41/42] vt: Disable KD_FONT_OP_COPY Sasha Levin
2020-11-10 3:54 ` [PATCH AUTOSEL 5.4 42/42] fork: fix copy_process(CLONE_PARENT) race with the exiting ->real_parent Sasha Levin
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