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From: Sasha Levin <sashal@kernel.org>
To: linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc: Venkata Narendra Kumar Gutta <vnkgutta@codeaurora.org>,
	Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	Sasha Levin <sashal@kernel.org>
Subject: [PATCH AUTOSEL 5.0 070/317] driver core: platform: Fix the usage of platform device name(pdev->name)
Date: Wed, 22 May 2019 15:19:31 -0400	[thread overview]
Message-ID: <20190522192338.23715-70-sashal@kernel.org> (raw)
In-Reply-To: <20190522192338.23715-1-sashal@kernel.org>

From: Venkata Narendra Kumar Gutta <vnkgutta@codeaurora.org>

[ Upstream commit edb16da34b084c66763f29bee42b4e6bb33c3d66 ]

Platform core is using pdev->name as the platform device name to do
the binding of the devices with the drivers. But, when the platform
driver overrides the platform device name with dev_set_name(),
the pdev->name is pointing to a location which is freed and becomes
an invalid parameter to do the binding match.

use-after-free instance:

[   33.325013] BUG: KASAN: use-after-free in strcmp+0x8c/0xb0
[   33.330646] Read of size 1 at addr ffffffc10beae600 by task modprobe
[   33.339068] CPU: 5 PID: 518 Comm: modprobe Tainted:
			G S      W  O      4.19.30+ #3
[   33.346835] Hardware name: MTP (DT)
[   33.350419] Call trace:
[   33.352941]  dump_backtrace+0x0/0x3b8
[   33.356713]  show_stack+0x24/0x30
[   33.360119]  dump_stack+0x160/0x1d8
[   33.363709]  print_address_description+0x84/0x2e0
[   33.368549]  kasan_report+0x26c/0x2d0
[   33.372322]  __asan_report_load1_noabort+0x2c/0x38
[   33.377248]  strcmp+0x8c/0xb0
[   33.380306]  platform_match+0x70/0x1f8
[   33.384168]  __driver_attach+0x78/0x3a0
[   33.388111]  bus_for_each_dev+0x13c/0x1b8
[   33.392237]  driver_attach+0x4c/0x58
[   33.395910]  bus_add_driver+0x350/0x560
[   33.399854]  driver_register+0x23c/0x328
[   33.403886]  __platform_driver_register+0xd0/0xe0

So, use dev_name(&pdev->dev), which fetches the platform device name from
the kobject(dev->kobj->name) of the device instead of the pdev->name.

Signed-off-by: Venkata Narendra Kumar Gutta <vnkgutta@codeaurora.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/base/platform.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/base/platform.c b/drivers/base/platform.c
index 1c958eb33ef4d..fcb8ea54f61f8 100644
--- a/drivers/base/platform.c
+++ b/drivers/base/platform.c
@@ -855,7 +855,7 @@ static ssize_t modalias_show(struct device *dev, struct device_attribute *a,
 	if (len != -ENODEV)
 		return len;
 
-	len = snprintf(buf, PAGE_SIZE, "platform:%s\n", pdev->name);
+	len = snprintf(buf, PAGE_SIZE, "platform:%s\n", dev_name(&pdev->dev));
 
 	return (len >= PAGE_SIZE) ? (PAGE_SIZE - 1) : len;
 }
@@ -931,7 +931,7 @@ static int platform_uevent(struct device *dev, struct kobj_uevent_env *env)
 		return rc;
 
 	add_uevent_var(env, "MODALIAS=%s%s", PLATFORM_MODULE_PREFIX,
-			pdev->name);
+			dev_name(&pdev->dev));
 	return 0;
 }
 
@@ -940,7 +940,7 @@ static const struct platform_device_id *platform_match_id(
 			struct platform_device *pdev)
 {
 	while (id->name[0]) {
-		if (strcmp(pdev->name, id->name) == 0) {
+		if (strcmp(dev_name(&pdev->dev), id->name) == 0) {
 			pdev->id_entry = id;
 			return id;
 		}
@@ -984,7 +984,7 @@ static int platform_match(struct device *dev, struct device_driver *drv)
 		return platform_match_id(pdrv->id_table, pdev) != NULL;
 
 	/* fall-back to driver name match */
-	return (strcmp(pdev->name, drv->name) == 0);
+	return (strcmp(dev_name(&pdev->dev), drv->name) == 0);
 }
 
 #ifdef CONFIG_PM_SLEEP
-- 
2.20.1


  parent reply	other threads:[~2019-05-22 19:53 UTC|newest]

Thread overview: 107+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-05-22 19:18 [PATCH AUTOSEL 5.0 001/317] gfs2: Fix lru_count going negative Sasha Levin
2019-05-22 19:18 ` [PATCH AUTOSEL 5.0 002/317] cxgb4: Fix error path in cxgb4_init_module Sasha Levin
2019-05-22 19:18 ` [PATCH AUTOSEL 5.0 003/317] afs: Fix getting the afs.fid xattr Sasha Levin
2019-05-22 19:18 ` [PATCH AUTOSEL 5.0 004/317] NFS: make nfs_match_client killable Sasha Levin
2019-05-22 19:18 ` [PATCH AUTOSEL 5.0 005/317] gfs2: fix race between gfs2_freeze_func and unmount Sasha Levin
2019-05-22 19:18 ` [PATCH AUTOSEL 5.0 006/317] IB/hfi1: Fix WQ_MEM_RECLAIM warning Sasha Levin
2019-05-22 19:18 ` [PATCH AUTOSEL 5.0 007/317] gfs2: Fix occasional glock use-after-free Sasha Levin
2019-05-22 19:18 ` [PATCH AUTOSEL 5.0 008/317] mmc: core: Verify SD bus width Sasha Levin
2019-05-22 19:18 ` [PATCH AUTOSEL 5.0 009/317] batman-adv: mcast: fix multicast tt/tvlv worker locking Sasha Levin
2019-05-22 19:18 ` [PATCH AUTOSEL 5.0 010/317] tools/bpf: fix perf build error with uClibc (seen on ARC) Sasha Levin
2019-05-22 19:18 ` [PATCH AUTOSEL 5.0 011/317] selftests/bpf: set RLIMIT_MEMLOCK properly for test_libbpf_open.c Sasha Levin
2019-05-22 19:18 ` [PATCH AUTOSEL 5.0 012/317] bpftool: exclude bash-completion/bpftool from .gitignore pattern Sasha Levin
2019-05-22 19:18 ` [PATCH AUTOSEL 5.0 013/317] ice: Separate if conditions for ice_set_features() Sasha Levin
2019-05-22 19:18 ` [PATCH AUTOSEL 5.0 014/317] blk-mq: split blk_mq_alloc_and_init_hctx into two parts Sasha Levin
2019-05-22 19:18 ` [PATCH AUTOSEL 5.0 015/317] blk-mq: grab .q_usage_counter when queuing request from plug code path Sasha Levin
2019-05-22 19:18 ` [PATCH AUTOSEL 5.0 016/317] dmaengine: tegra210-dma: free dma controller in remove() Sasha Levin
2019-05-22 19:18 ` [PATCH AUTOSEL 5.0 017/317] net: ena: gcc 8: fix compilation warning Sasha Levin
2019-05-22 19:18 ` [PATCH AUTOSEL 5.0 018/317] net: ena: fix: set freed objects to NULL to avoid failing future allocations Sasha Levin
2019-05-22 19:18 ` [PATCH AUTOSEL 5.0 019/317] hv_netvsc: fix race that may miss tx queue wakeup Sasha Levin
2019-05-22 19:18 ` [PATCH AUTOSEL 5.0 020/317] orangefs: truncate before updating size Sasha Levin
2019-05-22 19:18 ` [PATCH AUTOSEL 5.0 021/317] Bluetooth: Ignore CC events not matching the last HCI command Sasha Levin
2019-05-22 19:18 ` [PATCH AUTOSEL 5.0 022/317] pinctrl: zte: fix leaked of_node references Sasha Levin
2019-05-22 19:18 ` [PATCH AUTOSEL 5.0 023/317] ASoC: Intel: kbl_da7219_max98357a: Map BTN_0 to KEY_PLAYPAUSE Sasha Levin
2019-05-22 19:18 ` [PATCH AUTOSEL 5.0 024/317] usb: dwc2: gadget: Increase descriptors count for ISOC's Sasha Levin
2019-05-22 19:18 ` [PATCH AUTOSEL 5.0 025/317] usb: dwc3: move synchronize_irq() out of the spinlock protected block Sasha Levin
2019-05-22 19:18 ` [PATCH AUTOSEL 5.0 026/317] usb: gadget: f_fs: don't free buffer prematurely Sasha Levin
2019-05-22 19:18 ` [PATCH AUTOSEL 5.0 027/317] ASoC: hdmi-codec: unlock the device on startup errors Sasha Levin
2019-05-22 19:18 ` [PATCH AUTOSEL 5.0 028/317] leds: avoid races with workqueue Sasha Levin
2019-05-22 19:18 ` [PATCH AUTOSEL 5.0 029/317] powerpc/perf: Return accordingly on invalid chip-id in Sasha Levin
2019-05-22 19:18 ` [PATCH AUTOSEL 5.0 030/317] powerpc/boot: Fix missing check of lseek() return value Sasha Levin
2019-05-22 19:18 ` [PATCH AUTOSEL 5.0 031/317] powerpc/perf: Fix loop exit condition in nest_imc_event_init Sasha Levin
2019-05-22 19:18 ` [PATCH AUTOSEL 5.0 032/317] spi: atmel-quadspi: fix crash while suspending Sasha Levin
2019-05-22 19:18 ` [PATCH AUTOSEL 5.0 033/317] ASoC: imx: fix fiq dependencies Sasha Levin
2019-05-22 19:18 ` [PATCH AUTOSEL 5.0 034/317] spi: pxa2xx: fix SCR (divisor) calculation Sasha Levin
2019-05-22 19:18 ` [PATCH AUTOSEL 5.0 035/317] brcm80211: potential NULL dereference in brcmf_cfg80211_vndr_cmds_dcmd_handler() Sasha Levin
2019-05-22 19:18 ` [PATCH AUTOSEL 5.0 036/317] ACPI / property: fix handling of data_nodes in acpi_get_next_subnode() Sasha Levin
2019-05-22 19:18 ` [PATCH AUTOSEL 5.0 037/317] drm/nouveau/bar/nv50: ensure BAR is mapped Sasha Levin
2019-05-22 19:18 ` [PATCH AUTOSEL 5.0 038/317] media: stm32-dcmi: return appropriate error codes during probe Sasha Levin
2019-05-22 19:19 ` [PATCH AUTOSEL 5.0 039/317] ARM: vdso: Remove dependency with the arch_timer driver internals Sasha Levin
2019-05-22 19:19 ` [PATCH AUTOSEL 5.0 040/317] arm64: Fix compiler warning from pte_unmap() with -Wunused-but-set-variable Sasha Levin
2019-05-22 19:19 ` [PATCH AUTOSEL 5.0 041/317] x86/ftrace: Set trampoline pages as executable Sasha Levin
2019-05-22 19:19 ` [PATCH AUTOSEL 5.0 042/317] powerpc/watchdog: Use hrtimers for per-CPU heartbeat Sasha Levin
2019-05-22 19:19 ` [PATCH AUTOSEL 5.0 043/317] sched/cpufreq: Fix kobject memleak Sasha Levin
2019-05-22 19:19 ` [PATCH AUTOSEL 5.0 044/317] scsi: qla2xxx: Fix a qla24xx_enable_msix() error path Sasha Levin
2019-05-22 19:19 ` [PATCH AUTOSEL 5.0 045/317] scsi: qla2xxx: Fix abort handling in tcm_qla2xxx_write_pending() Sasha Levin
2019-05-22 19:19 ` [PATCH AUTOSEL 5.0 046/317] scsi: qla2xxx: Avoid that lockdep complains about unsafe locking in tcm_qla2xxx_close_session() Sasha Levin
2019-05-22 19:19 ` [PATCH AUTOSEL 5.0 047/317] scsi: qla2xxx: Fix hardirq-unsafe locking Sasha Levin
2019-05-22 19:19 ` [PATCH AUTOSEL 5.0 048/317] x86/modules: Avoid breaking W^X while loading modules Sasha Levin
2019-05-22 19:19 ` [PATCH AUTOSEL 5.0 049/317] Btrfs: fix data bytes_may_use underflow with fallocate due to failed quota reserve Sasha Levin
2019-05-22 19:19 ` [PATCH AUTOSEL 5.0 050/317] btrfs: fix panic during relocation after ENOSPC before writeback happens Sasha Levin
2019-05-22 19:19 ` [PATCH AUTOSEL 5.0 051/317] btrfs: Don't panic when we can't find a root key Sasha Levin
2019-05-22 19:19 ` [PATCH AUTOSEL 5.0 052/317] iwlwifi: pcie: don't crash on invalid RX interrupt Sasha Levin
2019-05-22 19:19 ` [PATCH AUTOSEL 5.0 053/317] rtc: 88pm860x: prevent use-after-free on device remove Sasha Levin
2019-05-22 19:19 ` [PATCH AUTOSEL 5.0 054/317] rtc: stm32: manage the get_irq probe defer case Sasha Levin
2019-05-22 19:19 ` [PATCH AUTOSEL 5.0 055/317] scsi: qedi: Abort ep termination if offload not scheduled Sasha Levin
2019-05-22 19:19 ` [PATCH AUTOSEL 5.0 056/317] s390/kexec_file: Fix detection of text segment in ELF loader Sasha Levin
2019-05-22 19:19 ` [PATCH AUTOSEL 5.0 057/317] ALSA: hda: fix unregister device twice on ASoC driver Sasha Levin
2019-05-22 19:19 ` [PATCH AUTOSEL 5.0 058/317] sched/nohz: Run NOHZ idle load balancer on HK_FLAG_MISC CPUs Sasha Levin
2019-05-22 19:19 ` [PATCH AUTOSEL 5.0 059/317] net: ethernet: ti: cpsw: fix allmulti cfg in dual_mac mode Sasha Levin
2019-05-22 19:19 ` [PATCH AUTOSEL 5.0 060/317] w1: fix the resume command API Sasha Levin
2019-05-22 19:19 ` [PATCH AUTOSEL 5.0 061/317] net: hns3: fix for TX clean num when cleaning TX BD Sasha Levin
2019-05-22 19:19 ` [PATCH AUTOSEL 5.0 062/317] net: phy: improve genphy_soft_reset Sasha Levin
2019-05-22 19:19 ` [PATCH AUTOSEL 5.0 063/317] s390: qeth: address type mismatch warning Sasha Levin
2019-05-22 19:19 ` [PATCH AUTOSEL 5.0 064/317] net: hns3: use atomic_t replace u32 for arq's count Sasha Levin
2019-05-22 19:19 ` [PATCH AUTOSEL 5.0 065/317] dmaengine: pl330: _stop: clear interrupt status Sasha Levin
2019-05-22 19:19 ` [PATCH AUTOSEL 5.0 066/317] mac80211/cfg80211: update bss channel on channel switch Sasha Levin
2019-05-22 19:19 ` [PATCH AUTOSEL 5.0 067/317] USB: serial: fix initial-termios handling Sasha Levin
2019-05-22 19:19 ` [PATCH AUTOSEL 5.0 068/317] libbpf: fix samples/bpf build failure due to undefined UINT32_MAX Sasha Levin
2019-05-22 19:19 ` [PATCH AUTOSEL 5.0 069/317] slimbus: fix a potential NULL pointer dereference in of_qcom_slim_ngd_register Sasha Levin
2019-05-22 19:19 ` Sasha Levin [this message]
2019-05-22 20:04   ` [PATCH AUTOSEL 5.0 070/317] driver core: platform: Fix the usage of platform device name(pdev->name) Greg Kroah-Hartman
2019-05-29 18:57     ` Sasha Levin
2019-05-22 19:19 ` [PATCH AUTOSEL 5.0 071/317] driver core: Postpone DMA tear-down until after devres release for probe failure Sasha Levin
2019-05-22 19:19 ` [PATCH AUTOSEL 5.0 072/317] ASoC: fsl_sai: Update is_slave_mode with correct value Sasha Levin
2019-05-22 19:19 ` [PATCH AUTOSEL 5.0 073/317] Fix nfs4.2 return -EINVAL when do dedupe operation Sasha Levin
2019-05-22 19:19 ` [PATCH AUTOSEL 5.0 074/317] mwifiex: prevent an array overflow Sasha Levin
2019-05-22 19:19 ` [PATCH AUTOSEL 5.0 075/317] rsi: Fix NULL pointer dereference in kmalloc Sasha Levin
2019-05-22 19:19 ` [PATCH AUTOSEL 5.0 076/317] net: cw1200: fix a NULL pointer dereference Sasha Levin
2019-05-22 19:19 ` [PATCH AUTOSEL 5.0 077/317] at76c50x-usb: Don't register led_trigger if usb_register_driver failed Sasha Levin
2019-05-22 19:19 ` [PATCH AUTOSEL 5.0 078/317] nvme: set 0 capacity if namespace block size exceeds PAGE_SIZE Sasha Levin
2019-05-22 19:19 ` [PATCH AUTOSEL 5.0 079/317] nvme-rdma: fix a NULL deref when an admin connect times out Sasha Levin
2019-05-22 19:19 ` [PATCH AUTOSEL 5.0 080/317] nvme-tcp: " Sasha Levin
2019-05-22 19:19 ` [PATCH AUTOSEL 5.0 081/317] ssb: Fix possible NULL pointer dereference in ssb_host_pcmcia_exit Sasha Levin
2019-05-22 19:19 ` [PATCH AUTOSEL 5.0 082/317] crypto: sun4i-ss - Fix invalid calculation of hash end Sasha Levin
2019-05-22 19:19 ` [PATCH AUTOSEL 5.0 083/317] bcache: avoid potential memleak of list of journal_replay(s) in the CACHE_SYNC branch of run_cache_set Sasha Levin
2019-05-22 19:19 ` [PATCH AUTOSEL 5.0 084/317] bcache: return error immediately in bch_journal_replay() Sasha Levin
2019-05-22 19:19 ` [PATCH AUTOSEL 5.0 085/317] bcache: fix failure in journal relplay Sasha Levin
2019-05-22 19:19 ` [PATCH AUTOSEL 5.0 086/317] bcache: add failure check to run_cache_set() for journal replay Sasha Levin
2019-05-22 19:19 ` [PATCH AUTOSEL 5.0 087/317] bcache: avoid clang -Wunintialized warning Sasha Levin
2019-05-22 19:19 ` [PATCH AUTOSEL 5.0 088/317] RDMA/cma: Consider scope_id while binding to ipv6 ll address Sasha Levin
2019-05-22 19:19 ` [PATCH AUTOSEL 5.0 089/317] vfio-ccw: Do not call flush_workqueue while holding the spinlock Sasha Levin
2019-05-22 19:19 ` [PATCH AUTOSEL 5.0 090/317] vfio-ccw: Release any channel program when releasing/removing vfio-ccw mdev Sasha Levin
2019-05-22 19:19 ` [PATCH AUTOSEL 5.0 091/317] x86/build: Move _etext to actual end of .text Sasha Levin
2019-05-22 19:19 ` [PATCH AUTOSEL 5.0 092/317] smpboot: Place the __percpu annotation correctly Sasha Levin
2019-05-22 19:19 ` [PATCH AUTOSEL 5.0 093/317] x86/uaccess: Dont leak the AC flag into __put_user() argument evaluation Sasha Levin
2019-05-22 19:19 ` [PATCH AUTOSEL 5.0 094/317] x86/mm: Remove in_nmi() warning from 64-bit implementation of vmalloc_fault() Sasha Levin
2019-05-22 19:19 ` [PATCH AUTOSEL 5.0 095/317] mlxsw: spectrum_router: Prevent ipv6 gateway with v4 route via replace and append Sasha Levin
2019-05-22 19:27   ` David Ahern
2019-05-29 19:00     ` Sasha Levin
2019-05-22 19:19 ` [PATCH AUTOSEL 5.0 096/317] mm/uaccess: Use 'unsigned long' to placate UBSAN warnings on older GCC versions Sasha Levin
2019-05-22 19:19 ` [PATCH AUTOSEL 5.0 097/317] Bluetooth: hci_qca: Give enough time to ROME controller to bootup Sasha Levin
2019-05-22 19:19 ` [PATCH AUTOSEL 5.0 098/317] Bluetooth: btbcm: Add default address for BCM43341B Sasha Levin
2019-05-22 19:20 ` [PATCH AUTOSEL 5.0 099/317] HID: logitech-hidpp: use RAP instead of FAP to get the protocol version Sasha Levin
2019-05-22 19:20 ` [PATCH AUTOSEL 5.0 100/317] pinctrl: pistachio: fix leaked of_node references Sasha Levin
2019-05-22 19:20 ` [PATCH AUTOSEL 5.0 101/317] pinctrl: st: " Sasha Levin
2019-05-22 19:20 ` [PATCH AUTOSEL 5.0 102/317] pinctrl: samsung: " Sasha Levin
2019-05-22 19:20 ` [PATCH AUTOSEL 5.0 103/317] clk: rockchip: undo several noc and special clocks as critical on rk3288 Sasha Levin

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