From: Sasha Levin <sashal@kernel.org>
To: linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc: Arvind Sankar <nivedita@alum.mit.edu>,
Borislav Petkov <bp@suse.de>, Kees Cook <keescook@chromium.org>,
Dave Hansen <dave.hansen@intel.com>,
Sasha Levin <sashal@kernel.org>
Subject: [PATCH AUTOSEL 4.9 39/50] x86/mm: Stop printing BRK addresses
Date: Mon, 8 Jun 2020 19:26:29 -0400 [thread overview]
Message-ID: <20200608232640.3370262-39-sashal@kernel.org> (raw)
In-Reply-To: <20200608232640.3370262-1-sashal@kernel.org>
From: Arvind Sankar <nivedita@alum.mit.edu>
[ Upstream commit 67d631b7c05eff955ccff4139327f0f92a5117e5 ]
This currently leaks kernel physical addresses into userspace.
Signed-off-by: Arvind Sankar <nivedita@alum.mit.edu>
Signed-off-by: Borislav Petkov <bp@suse.de>
Acked-by: Kees Cook <keescook@chromium.org>
Acked-by: Dave Hansen <dave.hansen@intel.com>
Link: https://lkml.kernel.org/r/20200229231120.1147527-1-nivedita@alum.mit.edu
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
arch/x86/mm/init.c | 2 --
1 file changed, 2 deletions(-)
diff --git a/arch/x86/mm/init.c b/arch/x86/mm/init.c
index ce092a62fc5d..bc2455c2fcab 100644
--- a/arch/x86/mm/init.c
+++ b/arch/x86/mm/init.c
@@ -110,8 +110,6 @@ __ref void *alloc_low_pages(unsigned int num)
} else {
pfn = pgt_buf_end;
pgt_buf_end += num;
- printk(KERN_DEBUG "BRK [%#010lx, %#010lx] PGTABLE\n",
- pfn << PAGE_SHIFT, (pgt_buf_end << PAGE_SHIFT) - 1);
}
for (i = 0; i < num; i++) {
--
2.25.1
next prev parent reply other threads:[~2020-06-08 23:42 UTC|newest]
Thread overview: 50+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-06-08 23:25 [PATCH AUTOSEL 4.9 01/50] ath9x: Fix stack-out-of-bounds Write in ath9k_hif_usb_rx_cb Sasha Levin
2020-06-08 23:25 ` [PATCH AUTOSEL 4.9 02/50] ath9k: Fix use-after-free Write in ath9k_htc_rx_msg Sasha Levin
2020-06-08 23:25 ` [PATCH AUTOSEL 4.9 03/50] media: si2157: Better check for running tuner in init Sasha Levin
2020-06-08 23:25 ` [PATCH AUTOSEL 4.9 04/50] objtool: Ignore empty alternatives Sasha Levin
2020-06-08 23:25 ` [PATCH AUTOSEL 4.9 05/50] net: ena: fix error returning in ena_com_get_hash_function() Sasha Levin
2020-06-08 23:25 ` [PATCH AUTOSEL 4.9 06/50] spi: dw: Zero DMA Tx and Rx configurations on stack Sasha Levin
2020-06-08 23:25 ` [PATCH AUTOSEL 4.9 07/50] Bluetooth: Add SCO fallback for invalid LMP parameters error Sasha Levin
2020-06-08 23:25 ` [PATCH AUTOSEL 4.9 08/50] kgdb: Prevent infinite recursive entries to the debugger Sasha Levin
2020-06-08 23:25 ` [PATCH AUTOSEL 4.9 09/50] spi: dw: Enable interrupts in accordance with DMA xfer mode Sasha Levin
2020-06-08 23:26 ` [PATCH AUTOSEL 4.9 10/50] clocksource: dw_apb_timer_of: Fix missing clockevent timers Sasha Levin
2020-06-08 23:26 ` [PATCH AUTOSEL 4.9 11/50] btrfs: do not ignore error from btrfs_next_leaf() when inserting checksums Sasha Levin
2020-06-08 23:26 ` [PATCH AUTOSEL 4.9 12/50] ARM: 8978/1: mm: make act_mm() respect THREAD_SIZE Sasha Levin
2020-06-08 23:26 ` [PATCH AUTOSEL 4.9 13/50] x86/kvm/hyper-v: Explicitly align hcall param for kvm_hyperv_exit Sasha Levin
2020-06-08 23:26 ` [PATCH AUTOSEL 4.9 14/50] net: vmxnet3: fix possible buffer overflow caused by bad DMA value in vmxnet3_get_rss() Sasha Levin
2020-06-08 23:26 ` [PATCH AUTOSEL 4.9 15/50] staging: android: ion: use vmap instead of vm_map_ram Sasha Levin
2020-06-08 23:26 ` [PATCH AUTOSEL 4.9 16/50] ath9k: Fix use-after-free Read in ath9k_wmi_ctrl_rx Sasha Levin
2020-06-08 23:26 ` [PATCH AUTOSEL 4.9 17/50] ath9k: Fix general protection fault in ath9k_hif_usb_rx_cb Sasha Levin
2020-06-08 23:26 ` [PATCH AUTOSEL 4.9 18/50] e1000: Distribute switch variables for initialization Sasha Levin
2020-06-08 23:26 ` [PATCH AUTOSEL 4.9 19/50] dt-bindings: display: mediatek: control dpi pins mode to avoid leakage Sasha Levin
2020-06-08 23:26 ` [PATCH AUTOSEL 4.9 20/50] media: dvb: return -EREMOTEIO on i2c transfer failure Sasha Levin
2020-06-08 23:26 ` [PATCH AUTOSEL 4.9 21/50] media: platform: fcp: Set appropriate DMA parameters Sasha Levin
2020-06-08 23:26 ` [PATCH AUTOSEL 4.9 22/50] MIPS: Make sparse_init() using top-down allocation Sasha Levin
2020-06-08 23:26 ` [PATCH AUTOSEL 4.9 23/50] netfilter: nft_nat: return EOPNOTSUPP if type or flags are not supported Sasha Levin
2020-06-08 23:26 ` [PATCH AUTOSEL 4.9 24/50] lib/mpi: Fix 64-bit MIPS build with Clang Sasha Levin
2020-06-08 23:26 ` [PATCH AUTOSEL 4.9 25/50] perf: Add cond_resched() to task_function_call() Sasha Levin
2020-06-08 23:26 ` [PATCH AUTOSEL 4.9 26/50] exit: Move preemption fixup up, move blocking operations down Sasha Levin
2020-06-08 23:26 ` [PATCH AUTOSEL 4.9 27/50] net: lpc-enet: fix error return code in lpc_mii_init() Sasha Levin
2020-06-08 23:26 ` [PATCH AUTOSEL 4.9 28/50] net: allwinner: Fix use correct return type for ndo_start_xmit() Sasha Levin
2020-06-08 23:26 ` [PATCH AUTOSEL 4.9 29/50] powerpc/spufs: fix copy_to_user while atomic Sasha Levin
2020-06-08 23:26 ` [PATCH AUTOSEL 4.9 30/50] ath9k_htc: Silence undersized packet warnings Sasha Levin
2020-06-08 23:26 ` [PATCH AUTOSEL 4.9 31/50] MIPS: Truncate link address into 32bit for 32bit kernel Sasha Levin
2020-06-08 23:26 ` [PATCH AUTOSEL 4.9 32/50] mips: cm: Fix an invalid error code of INTVN_*_ERR Sasha Levin
2020-06-08 23:26 ` [PATCH AUTOSEL 4.9 33/50] kgdb: Fix spurious true from in_dbg_master() Sasha Levin
2020-06-08 23:26 ` [PATCH AUTOSEL 4.9 34/50] md: don't flush workqueue unconditionally in md_open Sasha Levin
2020-06-08 23:26 ` [PATCH AUTOSEL 4.9 35/50] rtlwifi: Fix a double free in _rtl_usb_tx_urb_setup() Sasha Levin
2020-06-08 23:26 ` [PATCH AUTOSEL 4.9 36/50] mwifiex: Fix memory corruption in dump_station Sasha Levin
2020-06-08 23:26 ` [PATCH AUTOSEL 4.9 37/50] x86/boot: Correct relocation destination on old linkers Sasha Levin
2020-06-08 23:26 ` [PATCH AUTOSEL 4.9 38/50] mips: Add udelay lpj numbers adjustment Sasha Levin
2020-06-08 23:26 ` Sasha Levin [this message]
2020-06-08 23:26 ` [PATCH AUTOSEL 4.9 40/50] m68k: mac: Don't call via_flush_cache() on Mac IIfx Sasha Levin
2020-06-08 23:26 ` [PATCH AUTOSEL 4.9 41/50] macvlan: Skip loopback packets in RX handler Sasha Levin
2020-06-08 23:26 ` [PATCH AUTOSEL 4.9 42/50] PCI: Don't disable decoding when mmio_always_on is set Sasha Levin
2020-06-08 23:26 ` [PATCH AUTOSEL 4.9 43/50] MIPS: Fix IRQ tracing when call handle_fpe() and handle_msa_fpe() Sasha Levin
2020-06-08 23:26 ` [PATCH AUTOSEL 4.9 44/50] xfs: gut error handling in xfs_trans_unreserve_and_mod_sb() Sasha Levin
2020-06-08 23:26 ` [PATCH AUTOSEL 4.9 45/50] staging: greybus: sdio: Respect the cmd->busy_timeout from the mmc core Sasha Levin
2020-06-08 23:26 ` [PATCH AUTOSEL 4.9 46/50] ixgbe: fix signed-integer-overflow warning Sasha Levin
2020-06-08 23:26 ` [PATCH AUTOSEL 4.9 47/50] mmc: sdhci-esdhc-imx: fix the mask for tuning start point Sasha Levin
2020-06-08 23:26 ` [PATCH AUTOSEL 4.9 48/50] spi: dw: Return any value retrieved from the dma_transfer callback Sasha Levin
2020-06-08 23:26 ` [PATCH AUTOSEL 4.9 49/50] cpuidle: Fix three reference count leaks Sasha Levin
2020-06-08 23:26 ` [PATCH AUTOSEL 4.9 50/50] vxlan: Avoid infinite loop when suppressing NS messages with invalid options Sasha Levin
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