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From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To: linux-kernel@vger.kernel.org
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	stable@vger.kernel.org, Boris Burkov <boris@bur.io>,
	David Sterba <dsterba@suse.com>
Subject: [PATCH 5.4 034/138] btrfs: fix mount failure caused by race with umount
Date: Mon, 27 Jul 2020 16:03:49 +0200	[thread overview]
Message-ID: <20200727134927.080881996@linuxfoundation.org> (raw)
In-Reply-To: <20200727134925.228313570@linuxfoundation.org>

From: Boris Burkov <boris@bur.io>

commit 48cfa61b58a1fee0bc49eef04f8ccf31493b7cdd upstream.

It is possible to cause a btrfs mount to fail by racing it with a slow
umount. The crux of the sequence is generic_shutdown_super not yet
calling sop->put_super before btrfs_mount_root calls btrfs_open_devices.
If that occurs, btrfs_open_devices will decide the opened counter is
non-zero, increment it, and skip resetting fs_devices->total_rw_bytes to
0. From here, mount will call sget which will result in grab_super
trying to take the super block umount semaphore. That semaphore will be
held by the slow umount, so mount will block. Before up-ing the
semaphore, umount will delete the super block, resulting in mount's sget
reliably allocating a new one, which causes the mount path to dutifully
fill it out, and increment total_rw_bytes a second time, which causes
the mount to fail, as we see double the expected bytes.

Here is the sequence laid out in greater detail:

CPU0                                                    CPU1
down_write sb->s_umount
btrfs_kill_super
  kill_anon_super(sb)
    generic_shutdown_super(sb);
      shrink_dcache_for_umount(sb);
      sync_filesystem(sb);
      evict_inodes(sb); // SLOW

                                              btrfs_mount_root
                                                btrfs_scan_one_device
                                                fs_devices = device->fs_devices
                                                fs_info->fs_devices = fs_devices
                                                // fs_devices-opened makes this a no-op
                                                btrfs_open_devices(fs_devices, mode, fs_type)
                                                s = sget(fs_type, test, set, flags, fs_info);
                                                  find sb in s_instances
                                                  grab_super(sb);
                                                    down_write(&s->s_umount); // blocks

      sop->put_super(sb)
        // sb->fs_devices->opened == 2; no-op
      spin_lock(&sb_lock);
      hlist_del_init(&sb->s_instances);
      spin_unlock(&sb_lock);
      up_write(&sb->s_umount);
                                                    return 0;
                                                  retry lookup
                                                  don't find sb in s_instances (deleted by CPU0)
                                                  s = alloc_super
                                                  return s;
                                                btrfs_fill_super(s, fs_devices, data)
                                                  open_ctree // fs_devices total_rw_bytes improperly set!
                                                    btrfs_read_chunk_tree
                                                      read_one_dev // increment total_rw_bytes again!!
                                                      super_total_bytes < fs_devices->total_rw_bytes // ERROR!!!

To fix this, we clear total_rw_bytes from within btrfs_read_chunk_tree
before the calls to read_one_dev, while holding the sb umount semaphore
and the uuid mutex.

To reproduce, it is sufficient to dirty a decent number of inodes, then
quickly umount and mount.

  for i in $(seq 0 500)
  do
    dd if=/dev/zero of="/mnt/foo/$i" bs=1M count=1
  done
  umount /mnt/foo&
  mount /mnt/foo

does the trick for me.

CC: stable@vger.kernel.org # 4.4+
Signed-off-by: Boris Burkov <boris@bur.io>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 fs/btrfs/volumes.c |    8 ++++++++
 1 file changed, 8 insertions(+)

--- a/fs/btrfs/volumes.c
+++ b/fs/btrfs/volumes.c
@@ -7270,6 +7270,14 @@ int btrfs_read_chunk_tree(struct btrfs_f
 	mutex_lock(&fs_info->chunk_mutex);
 
 	/*
+	 * It is possible for mount and umount to race in such a way that
+	 * we execute this code path, but open_fs_devices failed to clear
+	 * total_rw_bytes. We certainly want it cleared before reading the
+	 * device items, so clear it here.
+	 */
+	fs_info->fs_devices->total_rw_bytes = 0;
+
+	/*
 	 * Read all device items, and then all the chunk items. All
 	 * device items are found before any chunk item (their object id
 	 * is smaller than the lowest possible object id for a chunk



  parent reply	other threads:[~2020-07-27 14:36 UTC|newest]

Thread overview: 144+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-07-27 14:03 [PATCH 5.4 000/138] 5.4.54-rc1 review Greg Kroah-Hartman
2020-07-27 14:03 ` [PATCH 5.4 001/138] soc: qcom: rpmh: Dirt can only make you dirtier, not cleaner Greg Kroah-Hartman
2020-07-27 14:03 ` [PATCH 5.4 002/138] gpio: arizona: handle pm_runtime_get_sync failure case Greg Kroah-Hartman
2020-07-27 14:03 ` [PATCH 5.4 003/138] gpio: arizona: put pm_runtime in case of failure Greg Kroah-Hartman
2020-07-27 14:03 ` [PATCH 5.4 004/138] pinctrl: amd: fix npins for uart0 in kerncz_groups Greg Kroah-Hartman
2020-07-27 14:03 ` [PATCH 5.4 005/138] mac80211: allow rx of mesh eapol frames with default rx key Greg Kroah-Hartman
2020-07-27 14:03 ` [PATCH 5.4 006/138] scsi: scsi_transport_spi: Fix function pointer check Greg Kroah-Hartman
2020-07-27 14:03 ` [PATCH 5.4 007/138] xtensa: fix __sync_fetch_and_{and,or}_4 declarations Greg Kroah-Hartman
2020-07-27 14:03 ` [PATCH 5.4 008/138] xtensa: update *pos in cpuinfo_op.next Greg Kroah-Hartman
2020-07-27 14:03 ` [PATCH 5.4 009/138] scsi: mpt3sas: Fix unlock imbalance Greg Kroah-Hartman
2020-07-27 14:03 ` [PATCH 5.4 010/138] drivers/net/wan/lapbether: Fixed the value of hard_header_len Greg Kroah-Hartman
2020-07-27 14:03 ` [PATCH 5.4 011/138] ALSA: hda/hdmi: fix failures at PCM open on Intel ICL and later Greg Kroah-Hartman
2020-07-27 14:03 ` [PATCH 5.4 012/138] net: sky2: initialize return of gm_phy_read Greg Kroah-Hartman
2020-07-27 14:03 ` [PATCH 5.4 013/138] drm/nouveau/i2c/g94-: increase NV_PMGR_DP_AUXCTL_TRANSACTREQ timeout Greg Kroah-Hartman
2020-07-27 14:03 ` [PATCH 5.4 014/138] scsi: mpt3sas: Fix error returns in BRM_status_show Greg Kroah-Hartman
2020-07-27 14:03 ` [PATCH 5.4 015/138] scsi: dh: Add Fujitsu device to devinfo and dh lists Greg Kroah-Hartman
2020-07-27 14:03 ` [PATCH 5.4 016/138] dm: use bio_uninit instead of bio_disassociate_blkg Greg Kroah-Hartman
2020-07-27 14:03 ` [PATCH 5.4 017/138] drivers/firmware/psci: Fix memory leakage in alloc_init_cpu_groups() Greg Kroah-Hartman
2020-07-27 14:03 ` [PATCH 5.4 018/138] fuse: fix weird page warning Greg Kroah-Hartman
2020-07-27 14:03 ` [PATCH 5.4 019/138] irqdomain/treewide: Keep firmware node unconditionally allocated Greg Kroah-Hartman
2020-07-27 14:03 ` [PATCH 5.4 020/138] ARM: dts: imx6qdl-gw551x: Do not use simple-audio-card,dai-link Greg Kroah-Hartman
2020-07-27 14:03 ` [PATCH 5.4 021/138] ARM: dts: imx6qdl-gw551x: fix audio SSI Greg Kroah-Hartman
2020-07-27 14:03 ` [PATCH 5.4 022/138] dmabuf: use spinlock to access dmabuf->name Greg Kroah-Hartman
2020-07-27 14:03 ` [PATCH 5.4 023/138] drm/amd/display: Check DMCU Exists Before Loading Greg Kroah-Hartman
2020-07-27 14:03 ` [PATCH 5.4 024/138] dm mpath: pass IO start time to path selector Greg Kroah-Hartman
2020-07-27 16:34   ` Gabriel Krisman Bertazi
2020-07-27 14:03 ` [PATCH 5.4 025/138] dm: do not use waitqueue for request-based DM Greg Kroah-Hartman
2020-07-27 14:03 ` [PATCH 5.4 026/138] SUNRPC reverting d03727b248d0 ("NFSv4 fix CLOSE not waiting for direct IO compeletion") Greg Kroah-Hartman
2020-07-27 14:03 ` [PATCH 5.4 027/138] btrfs: reloc: fix reloc root leak and NULL pointer dereference Greg Kroah-Hartman
2020-07-27 14:03 ` [PATCH 5.4 028/138] btrfs: reloc: clear DEAD_RELOC_TREE bit for orphan roots to prevent runaway balance Greg Kroah-Hartman
2020-07-27 14:03 ` [PATCH 5.4 029/138] uprobes: Change handle_swbp() to send SIGTRAP with si_code=SI_KERNEL, to fix GDB regression Greg Kroah-Hartman
2020-07-27 14:03 ` [PATCH 5.4 030/138] ALSA: hda/realtek: Fixed ALC298 sound bug by adding quirk for Samsung Notebook Pen S Greg Kroah-Hartman
2020-07-27 14:03 ` [PATCH 5.4 031/138] ALSA: info: Drop WARN_ON() from buffer NULL sanity check Greg Kroah-Hartman
2020-07-27 14:03 ` [PATCH 5.4 032/138] ASoC: rt5670: Correct RT5670_LDO_SEL_MASK Greg Kroah-Hartman
2020-07-27 14:03 ` [PATCH 5.4 033/138] btrfs: fix double free on ulist after backref resolution failure Greg Kroah-Hartman
2020-07-27 14:03 ` Greg Kroah-Hartman [this message]
2020-07-27 14:03 ` [PATCH 5.4 035/138] btrfs: fix page leaks after failure to lock page for delalloc Greg Kroah-Hartman
2020-07-27 14:03 ` [PATCH 5.4 036/138] bnxt_en: Fix race when modifying pause settings Greg Kroah-Hartman
2020-07-27 14:03 ` [PATCH 5.4 037/138] bnxt_en: Fix completion ring sizing with TPA enabled Greg Kroah-Hartman
2020-07-27 14:03 ` [PATCH 5.4 038/138] fpga: dfl: pci: reduce the scope of variable ret Greg Kroah-Hartman
2020-07-27 14:03 ` [PATCH 5.4 039/138] fpga: dfl: fix bug in port reset handshake Greg Kroah-Hartman
2020-07-27 14:03 ` [PATCH 5.4 040/138] hippi: Fix a size used in a pci_free_consistent() in an error handling path Greg Kroah-Hartman
2020-07-27 14:03 ` [PATCH 5.4 041/138] vsock/virtio: annotate the_virtio_vsock RCU pointer Greg Kroah-Hartman
2020-07-27 14:03 ` [PATCH 5.4 042/138] ax88172a: fix ax88172a_unbind() failures Greg Kroah-Hartman
2020-07-27 14:03 ` [PATCH 5.4 043/138] RDMA/mlx5: Use xa_lock_irq when access to SRQ table Greg Kroah-Hartman
2020-07-27 14:03 ` [PATCH 5.4 044/138] ASoC: Intel: bytcht_es8316: Add missed put_device() Greg Kroah-Hartman
2020-07-27 14:04 ` [PATCH 5.4 045/138] net: dp83640: fix SIOCSHWTSTAMP to update the struct with actual configuration Greg Kroah-Hartman
2020-07-27 14:04 ` [PATCH 5.4 046/138] ieee802154: fix one possible memleak in adf7242_probe Greg Kroah-Hartman
2020-07-27 14:04 ` [PATCH 5.4 047/138] drm: sun4i: hdmi: Fix inverted HPD result Greg Kroah-Hartman
2020-07-27 14:04 ` [PATCH 5.4 048/138] net: smc91x: Fix possible memory leak in smc_drv_probe() Greg Kroah-Hartman
2020-07-27 14:04 ` [PATCH 5.4 049/138] bonding: check error value of register_netdevice() immediately Greg Kroah-Hartman
2020-07-27 14:04 ` [PATCH 5.4 050/138] mlxsw: destroy workqueue when trap_register in mlxsw_emad_init Greg Kroah-Hartman
2020-07-27 14:04 ` [PATCH 5.4 051/138] ionic: use offset for ethtool regs data Greg Kroah-Hartman
2020-07-27 14:04 ` [PATCH 5.4 052/138] ionic: fix up filter locks and debug msgs Greg Kroah-Hartman
2020-07-27 14:04 ` [PATCH 5.4 053/138] net: ag71xx: add missed clk_disable_unprepare in error path of probe Greg Kroah-Hartman
2020-07-27 14:04 ` [PATCH 5.4 054/138] net: hns3: fix error handling for desc filling Greg Kroah-Hartman
2020-07-27 14:04 ` [PATCH 5.4 055/138] net: dsa: microchip: call phy_remove_link_mode during probe Greg Kroah-Hartman
2020-07-27 14:04 ` [PATCH 5.4 056/138] netdevsim: fix unbalaced locking in nsim_create() Greg Kroah-Hartman
2020-07-27 14:04 ` [PATCH 5.4 057/138] qed: suppress "dont support RoCE & iWARP" flooding on HW init Greg Kroah-Hartman
2020-07-27 14:04 ` [PATCH 5.4 058/138] qed: suppress false-positives interrupt error messages " Greg Kroah-Hartman
2020-07-27 14:04 ` [PATCH 5.4 059/138] ipvs: fix the connection sync failed in some cases Greg Kroah-Hartman
2020-07-27 14:04 ` [PATCH 5.4 060/138] net: ethernet: ave: Fix error returns in ave_init Greg Kroah-Hartman
2020-07-27 14:04 ` [PATCH 5.4 061/138] Revert "PCI/PM: Assume ports without DLL Link Active train links in 100 ms" Greg Kroah-Hartman
2020-07-27 14:04 ` [PATCH 5.4 062/138] nfsd4: fix NULL dereference in nfsd/clients display code Greg Kroah-Hartman
2020-07-27 14:04 ` [PATCH 5.4 063/138] enetc: Remove the mdio bus on PF probe bailout Greg Kroah-Hartman
2020-07-27 14:04 ` [PATCH 5.4 064/138] i2c: rcar: always clear ICSAR to avoid side effects Greg Kroah-Hartman
2020-07-27 14:04 ` [PATCH 5.4 065/138] i2c: i2c-qcom-geni: Fix DMA transfer race Greg Kroah-Hartman
2020-07-27 14:04 ` [PATCH 5.4 066/138] bonding: check return value of register_netdevice() in bond_newlink() Greg Kroah-Hartman
2020-07-27 14:04 ` [PATCH 5.4 067/138] geneve: fix an uninitialized value in geneve_changelink() Greg Kroah-Hartman
2020-07-27 14:04 ` [PATCH 5.4 068/138] serial: exar: Fix GPIO configuration for Sealevel cards based on XR17V35X Greg Kroah-Hartman
2020-07-27 14:04 ` [PATCH 5.4 069/138] scripts/decode_stacktrace: strip basepath from all paths Greg Kroah-Hartman
2020-07-27 14:04 ` [PATCH 5.4 070/138] scripts/gdb: fix lx-symbols gdb.error while loading modules Greg Kroah-Hartman
2020-07-27 14:04 ` [PATCH 5.4 071/138] HID: i2c-hid: add Mediacom FlexBook edge13 to descriptor override Greg Kroah-Hartman
2020-07-27 14:04 ` [PATCH 5.4 072/138] HID: alps: support devices with report id 2 Greg Kroah-Hartman
2020-07-27 14:04 ` [PATCH 5.4 073/138] HID: steam: fixes race in handling device list Greg Kroah-Hartman
2020-07-27 14:04 ` [PATCH 5.4 074/138] HID: apple: Disable Fn-key key-re-mapping on clone keyboards Greg Kroah-Hartman
2020-07-27 14:04 ` [PATCH 5.4 075/138] dmaengine: tegra210-adma: Fix runtime PM imbalance on error Greg Kroah-Hartman
2020-07-27 14:04 ` [PATCH 5.4 076/138] Input: add `SW_MACHINE_COVER` Greg Kroah-Hartman
2020-07-27 14:04 ` [PATCH 5.4 077/138] ARM: dts: n900: remove mmc1 card detect gpio Greg Kroah-Hartman
2020-07-27 14:04 ` [PATCH 5.4 078/138] spi: mediatek: use correct SPI_CFG2_REG MACRO Greg Kroah-Hartman
2020-07-27 14:04 ` [PATCH 5.4 079/138] regmap: dev_get_regmap_match(): fix string comparison Greg Kroah-Hartman
2020-07-27 14:04 ` [PATCH 5.4 080/138] hwmon: (aspeed-pwm-tacho) Avoid possible buffer overflow Greg Kroah-Hartman
2020-07-27 14:04 ` [PATCH 5.4 081/138] dmaengine: fsl-edma: fix wrong tcd endianness for big-endian cpu Greg Kroah-Hartman
2020-07-27 14:04 ` [PATCH 5.4 082/138] dmaengine: ioat setting ioat timeout as module parameter Greg Kroah-Hartman
2020-07-27 14:04 ` [PATCH 5.4 083/138] Input: synaptics - enable InterTouch for ThinkPad X1E 1st gen Greg Kroah-Hartman
2020-07-27 14:04 ` [PATCH 5.4 084/138] Input: elan_i2c - only increment wakeup count on touch Greg Kroah-Hartman
2020-07-27 14:04 ` [PATCH 5.4 085/138] usb: dwc3: pci: add support for the Intel Tiger Lake PCH -H variant Greg Kroah-Hartman
2020-07-27 14:04 ` [PATCH 5.4 086/138] usb: dwc3: pci: add support for the Intel Jasper Lake Greg Kroah-Hartman
2020-07-27 14:04 ` [PATCH 5.4 087/138] usb: gadget: udc: gr_udc: fix memleak on error handling path in gr_ep_init() Greg Kroah-Hartman
2020-07-27 14:04 ` [PATCH 5.4 088/138] usb: cdns3: ep0: fix some endian issues Greg Kroah-Hartman
2020-07-27 14:04 ` [PATCH 5.4 089/138] usb: cdns3: trace: " Greg Kroah-Hartman
2020-07-27 14:04 ` [PATCH 5.4 090/138] hwmon: (adm1275) Make sure we are reading enough data for different chips Greg Kroah-Hartman
2020-07-27 14:04 ` [PATCH 5.4 091/138] drm/amdgpu/gfx10: fix race condition for kiq Greg Kroah-Hartman
2020-07-27 14:04 ` [PATCH 5.4 092/138] drm/amdgpu: fix preemption unit test Greg Kroah-Hartman
2020-07-27 14:04 ` [PATCH 5.4 093/138] hwmon: (nct6775) Accept PECI Calibration as temperature source for NCT6798D Greg Kroah-Hartman
2020-07-27 14:04 ` [PATCH 5.4 094/138] platform/x86: ISST: Add new PCI device ids Greg Kroah-Hartman
2020-07-27 14:04 ` [PATCH 5.4 095/138] platform/x86: asus-wmi: allow BAT1 battery name Greg Kroah-Hartman
2020-07-27 14:04 ` [PATCH 5.4 096/138] hwmon: (scmi) Fix potential buffer overflow in scmi_hwmon_probe() Greg Kroah-Hartman
2020-07-27 14:04 ` [PATCH 5.4 097/138] ALSA: hda/realtek - fixup for yet another Intel reference board Greg Kroah-Hartman
2020-07-27 14:04 ` [PATCH 5.4 098/138] drivers/perf: Fix kernel panic when rmmod PMU modules during perf sampling Greg Kroah-Hartman
2020-07-27 14:04 ` [PATCH 5.4 099/138] arm64: Use test_tsk_thread_flag() for checking TIF_SINGLESTEP Greg Kroah-Hartman
2020-07-27 14:04 ` [PATCH 5.4 100/138] x86: math-emu: Fix up cmp insn for clang ias Greg Kroah-Hartman
2020-07-27 14:04 ` [PATCH 5.4 101/138] asm-generic/mmiowb: Allow mmiowb_set_pending() when preemptible() Greg Kroah-Hartman
2020-07-27 14:04 ` [PATCH 5.4 102/138] drivers/perf: Prevent forced unbinding of PMU drivers Greg Kroah-Hartman
2020-07-27 14:04 ` [PATCH 5.4 103/138] RISC-V: Upgrade smp_mb__after_spinlock() to iorw,iorw Greg Kroah-Hartman
2020-07-27 14:04 ` [PATCH 5.4 104/138] binder: Dont use mmput() from shrinker function Greg Kroah-Hartman
2020-07-27 14:05 ` [PATCH 5.4 105/138] usb: xhci-mtk: fix the failure of bandwidth allocation Greg Kroah-Hartman
2020-07-27 14:05 ` [PATCH 5.4 106/138] usb: xhci: Fix ASM2142/ASM3142 DMA addressing Greg Kroah-Hartman
2020-07-27 14:05 ` [PATCH 5.4 107/138] Revert "cifs: Fix the target file was deleted when rename failed." Greg Kroah-Hartman
2020-07-27 14:05 ` [PATCH 5.4 108/138] iwlwifi: mvm: dont call iwl_mvm_free_inactive_queue() under RCU Greg Kroah-Hartman
2020-07-27 14:05 ` [PATCH 5.4 109/138] tty: xilinx_uartps: Really fix id assignment Greg Kroah-Hartman
2020-07-27 14:05 ` [PATCH 5.4 110/138] staging: wlan-ng: properly check endpoint types Greg Kroah-Hartman
2020-07-27 14:05 ` [PATCH 5.4 111/138] staging: comedi: addi_apci_1032: check INSN_CONFIG_DIGITAL_TRIG shift Greg Kroah-Hartman
2020-07-27 14:05 ` [PATCH 5.4 112/138] staging: comedi: ni_6527: fix INSN_CONFIG_DIGITAL_TRIG support Greg Kroah-Hartman
2020-07-27 14:05 ` [PATCH 5.4 113/138] staging: comedi: addi_apci_1500: check INSN_CONFIG_DIGITAL_TRIG shift Greg Kroah-Hartman
2020-07-27 14:05 ` [PATCH 5.4 114/138] staging: comedi: addi_apci_1564: " Greg Kroah-Hartman
2020-07-27 14:05 ` [PATCH 5.4 115/138] serial: tegra: fix CREAD handling for PIO Greg Kroah-Hartman
2020-07-27 14:05 ` [PATCH 5.4 116/138] serial: 8250: fix null-ptr-deref in serial8250_start_tx() Greg Kroah-Hartman
2020-07-27 14:05 ` [PATCH 5.4 117/138] serial: 8250_mtk: Fix high-speed baud rates clamping Greg Kroah-Hartman
2020-07-27 14:05 ` [PATCH 5.4 118/138] /dev/mem: Add missing memory barriers for devmem_inode Greg Kroah-Hartman
2020-07-27 14:05 ` [PATCH 5.4 119/138] fbdev: Detect integer underflow at "struct fbcon_ops"->clear_margins Greg Kroah-Hartman
2020-07-27 14:05 ` [PATCH 5.4 120/138] vt: Reject zero-sized screen buffer size Greg Kroah-Hartman
2020-07-27 14:05 ` [PATCH 5.4 121/138] Makefile: Fix GCC_TOOLCHAIN_DIR prefix for Clang cross compilation Greg Kroah-Hartman
2020-07-27 14:05 ` [PATCH 5.4 122/138] mm/mmap.c: close race between munmap() and expand_upwards()/downwards() Greg Kroah-Hartman
2020-07-27 14:05 ` [PATCH 5.4 123/138] mm/memcg: fix refcount error while moving and swapping Greg Kroah-Hartman
2020-07-27 14:05 ` [PATCH 5.4 124/138] mm: memcg/slab: fix memory leak at non-root kmem_cache destroy Greg Kroah-Hartman
2020-07-27 14:05 ` [PATCH 5.4 125/138] khugepaged: fix null-pointer dereference due to race Greg Kroah-Hartman
2020-07-27 14:05 ` [PATCH 5.4 126/138] io-mapping: indicate mapping failure Greg Kroah-Hartman
2020-07-27 14:05 ` [PATCH 5.4 127/138] mmc: sdhci-of-aspeed: Fix clock divider calculation Greg Kroah-Hartman
2020-07-27 14:05 ` [PATCH 5.4 128/138] drm/amdgpu: Fix NULL dereference in dpm sysfs handlers Greg Kroah-Hartman
2020-07-27 14:05 ` [PATCH 5.4 129/138] drm/amd/powerplay: fix a crash when overclocking Vega M Greg Kroah-Hartman
2020-07-27 14:05 ` [PATCH 5.4 130/138] parisc: Add atomic64_set_release() define to avoid CPU soft lockups Greg Kroah-Hartman
2020-07-27 14:05 ` [PATCH 5.4 131/138] x86, vmlinux.lds: Page-align end of ..page_aligned sections Greg Kroah-Hartman
2020-07-27 14:05 ` [PATCH 5.4 132/138] ASoC: rt5670: Add new gpio1_is_ext_spk_en quirk and enable it on the Lenovo Miix 2 10 Greg Kroah-Hartman
2020-07-27 14:05 ` [PATCH 5.4 133/138] ASoC: qcom: Drop HAS_DMA dependency to fix link failure Greg Kroah-Hartman
2020-07-27 14:05 ` [PATCH 5.4 134/138] ASoC: topology: fix kernel oops on route addition error Greg Kroah-Hartman
2020-07-27 14:05 ` [PATCH 5.4 135/138] ASoC: topology: fix tlvs in error handling for widget_dmixer Greg Kroah-Hartman
2020-07-27 14:05 ` [PATCH 5.4 136/138] dm integrity: fix integrity recalculation that is improperly skipped Greg Kroah-Hartman
2020-07-27 14:05 ` [PATCH 5.4 137/138] ath9k: Fix general protection fault in ath9k_hif_usb_rx_cb Greg Kroah-Hartman
2020-07-27 14:05 ` [PATCH 5.4 138/138] ath9k: Fix regression with Atheros 9271 Greg Kroah-Hartman
2020-07-27 14:46 ` [PATCH 5.4 000/138] 5.4.54-rc1 review Thierry Reding
2020-07-28  1:34 ` Shuah Khan
2020-07-28  7:31 ` Naresh Kamboju
2020-07-28 18:23 ` Guenter Roeck

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