From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To: linux-kernel@vger.kernel.org
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
stable@vger.kernel.org, Helge Deller <deller@gmx.de>
Subject: [PATCH 4.9 42/61] parisc: Fix kernel panic in mem_init()
Date: Mon, 1 Jun 2020 19:53:49 +0200 [thread overview]
Message-ID: <20200601174019.401534628@linuxfoundation.org> (raw)
In-Reply-To: <20200601174010.316778377@linuxfoundation.org>
From: Helge Deller <deller@gmx.de>
commit bf71bc16e02162388808949b179d59d0b571b965 upstream.
The Debian kernel v5.6 triggers this kernel panic:
Kernel panic - not syncing: Bad Address (null pointer deref?)
Bad Address (null pointer deref?): Code=26 (Data memory access rights trap) at addr 0000000000000000
CPU: 0 PID: 0 Comm: swapper Not tainted 5.6.0-2-parisc64 #1 Debian 5.6.14-1
IAOQ[0]: mem_init+0xb0/0x150
IAOQ[1]: mem_init+0xb4/0x150
RP(r2): start_kernel+0x6c8/0x1190
Backtrace:
[<0000000040101ab4>] start_kernel+0x6c8/0x1190
[<0000000040108574>] start_parisc+0x158/0x1b8
on a HP-PARISC rp3440 machine with this memory layout:
Memory Ranges:
0) Start 0x0000000000000000 End 0x000000003fffffff Size 1024 MB
1) Start 0x0000004040000000 End 0x00000040ffdfffff Size 3070 MB
Fix the crash by avoiding virt_to_page() and similar functions in
mem_init() until the memory zones have been fully set up.
Signed-off-by: Helge Deller <deller@gmx.de>
Cc: stable@vger.kernel.org # v5.0+
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
arch/parisc/mm/init.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/arch/parisc/mm/init.c
+++ b/arch/parisc/mm/init.c
@@ -604,7 +604,7 @@ void __init mem_init(void)
> BITS_PER_LONG);
high_memory = __va((max_pfn << PAGE_SHIFT));
- set_max_mapnr(page_to_pfn(virt_to_page(high_memory - 1)) + 1);
+ set_max_mapnr(max_low_pfn);
free_all_bootmem();
#ifdef CONFIG_PA11
next prev parent reply other threads:[~2020-06-01 18:58 UTC|newest]
Thread overview: 63+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-06-01 17:53 [PATCH 4.9 00/61] 4.9.226-rc1 review Greg Kroah-Hartman
2020-06-01 17:53 ` [PATCH 4.9 01/61] ax25: fix setsockopt(SO_BINDTODEVICE) Greg Kroah-Hartman
2020-06-01 17:53 ` [PATCH 4.9 02/61] net: ipip: fix wrong address family in init error path Greg Kroah-Hartman
2020-06-01 17:53 ` [PATCH 4.9 03/61] net: revert "net: get rid of an signed integer overflow in ip_idents_reserve()" Greg Kroah-Hartman
2020-06-01 17:53 ` [PATCH 4.9 04/61] net sched: fix reporting the first-time use timestamp Greg Kroah-Hartman
2020-06-01 17:53 ` [PATCH 4.9 05/61] sctp: Start shutdown on association restart if in SHUTDOWN-SENT state and socket is closed Greg Kroah-Hartman
2020-06-01 17:53 ` [PATCH 4.9 06/61] net/mlx5e: Update netdev txq on completions during closure Greg Kroah-Hartman
2020-06-01 17:53 ` [PATCH 4.9 07/61] net: qrtr: Fix passing invalid reference to qrtr_local_enqueue() Greg Kroah-Hartman
2020-06-01 17:53 ` [PATCH 4.9 08/61] net/mlx5: Add command entry handling completion Greg Kroah-Hartman
2020-06-01 17:53 ` [PATCH 4.9 09/61] net: sun: fix missing release regions in cas_init_one() Greg Kroah-Hartman
2020-06-01 17:53 ` [PATCH 4.9 10/61] net/mlx4_core: fix a memory leak bug Greg Kroah-Hartman
2020-06-01 17:53 ` [PATCH 4.9 11/61] uapi: fix linux/if_pppol2tp.h userspace compilation errors Greg Kroah-Hartman
2020-06-01 17:53 ` [PATCH 4.9 12/61] IB/cma: Fix reference count leak when no ipv4 addresses are set Greg Kroah-Hartman
2020-06-01 17:53 ` [PATCH 4.9 13/61] gpio: tegra: mask GPIO IRQs during IRQ shutdown Greg Kroah-Hartman
2020-06-01 17:53 ` [PATCH 4.9 14/61] net: microchip: encx24j600: add missed kthread_stop Greg Kroah-Hartman
2020-06-01 17:53 ` [PATCH 4.9 15/61] gfs2: move privileged user check to gfs2_quota_lock_check Greg Kroah-Hartman
2020-06-01 17:53 ` [PATCH 4.9 16/61] gfs2: dont call quota_unhold if quotas are not locked Greg Kroah-Hartman
2020-06-01 17:53 ` [PATCH 4.9 17/61] cachefiles: Fix race between read_waiter and read_copier involving op->to_do Greg Kroah-Hartman
2020-06-01 17:53 ` [PATCH 4.9 18/61] usb: gadget: legacy: fix redundant initialization warnings Greg Kroah-Hartman
2020-06-01 17:53 ` [PATCH 4.9 19/61] cifs: Fix null pointer check in cifs_read Greg Kroah-Hartman
2020-06-01 17:53 ` [PATCH 4.9 20/61] Input: usbtouchscreen - add support for BonXeon TP Greg Kroah-Hartman
2020-06-01 17:53 ` [PATCH 4.9 21/61] Input: i8042 - add ThinkPad S230u to i8042 nomux list Greg Kroah-Hartman
2020-06-01 17:53 ` [PATCH 4.9 22/61] Input: evdev - call input_flush_device() on release(), not flush() Greg Kroah-Hartman
2020-06-01 17:53 ` [PATCH 4.9 23/61] Input: xpad - add custom init packet for Xbox One S controllers Greg Kroah-Hartman
2020-06-01 17:53 ` [PATCH 4.9 24/61] Input: i8042 - add ThinkPad S230u to i8042 reset list Greg Kroah-Hartman
2020-06-01 17:53 ` [PATCH 4.9 25/61] Input: synaptics-rmi4 - fix error return code in rmi_driver_probe() Greg Kroah-Hartman
2020-06-01 17:53 ` [PATCH 4.9 26/61] ARM: 8843/1: use unified assembler in headers Greg Kroah-Hartman
2020-06-01 17:53 ` [PATCH 4.9 27/61] ARM: uaccess: consolidate uaccess asm to asm/uaccess-asm.h Greg Kroah-Hartman
2020-06-01 17:53 ` [PATCH 4.9 28/61] ARM: uaccess: integrate uaccess_save and uaccess_restore Greg Kroah-Hartman
2020-06-01 17:53 ` [PATCH 4.9 29/61] ARM: uaccess: fix DACR mismatch with nested exceptions Greg Kroah-Hartman
2020-06-01 17:53 ` [PATCH 4.9 30/61] IB/qib: Call kobject_put() when kobject_init_and_add() fails Greg Kroah-Hartman
2020-06-01 17:53 ` [PATCH 4.9 31/61] ARM: dts: imx: Correct B850v3 clock assignment Greg Kroah-Hartman
2020-06-01 17:53 ` [PATCH 4.9 32/61] ARM: dts: imx6q-bx50v3: Add internal switch Greg Kroah-Hartman
2020-06-01 17:53 ` [PATCH 4.9 33/61] ARM: dts/imx6q-bx50v3: Set display interface clock parents Greg Kroah-Hartman
2020-06-01 17:53 ` [PATCH 4.9 34/61] ALSA: hwdep: fix a left shifting 1 by 31 UB bug Greg Kroah-Hartman
2020-06-01 17:53 ` [PATCH 4.9 35/61] ALSA: usb-audio: mixer: volume quirk for ESS Technology Asus USB DAC Greg Kroah-Hartman
2020-06-01 17:53 ` [PATCH 4.9 36/61] exec: Always set cap_ambient in cap_bprm_set_creds Greg Kroah-Hartman
2020-06-01 17:53 ` [PATCH 4.9 37/61] libceph: ignore pool overlay and cache logic on redirects Greg Kroah-Hartman
2020-06-01 17:53 ` [PATCH 4.9 38/61] mm: remove VM_BUG_ON(PageSlab()) from page_mapcount() Greg Kroah-Hartman
2020-06-01 17:53 ` [PATCH 4.9 39/61] fs/binfmt_elf.c: allocate initialized memory in fill_thread_core_info() Greg Kroah-Hartman
2020-06-01 17:53 ` [PATCH 4.9 40/61] include/asm-generic/topology.h: guard cpumask_of_node() macro argument Greg Kroah-Hartman
2020-06-01 17:53 ` [PATCH 4.9 41/61] iommu: Fix reference count leak in iommu_group_alloc Greg Kroah-Hartman
2020-06-01 17:53 ` Greg Kroah-Hartman [this message]
2020-06-01 17:53 ` [PATCH 4.9 43/61] mac80211: mesh: fix discovery timer re-arming issue / crash Greg Kroah-Hartman
2020-06-01 17:53 ` [PATCH 4.9 44/61] x86/dma: Fix max PFN arithmetic overflow on 32 bit systems Greg Kroah-Hartman
2020-06-01 17:53 ` [PATCH 4.9 45/61] xfrm: allow to accept packets with ipv6 NEXTHDR_HOP in xfrm_input Greg Kroah-Hartman
2020-06-01 17:53 ` [PATCH 4.9 46/61] xfrm: fix a warning in xfrm_policy_insert_list Greg Kroah-Hartman
2020-06-01 17:53 ` [PATCH 4.9 47/61] xfrm: fix a NULL-ptr deref in xfrm_local_error Greg Kroah-Hartman
2020-06-01 17:53 ` [PATCH 4.9 48/61] vti4: eliminated some duplicate code Greg Kroah-Hartman
2020-06-01 17:53 ` [PATCH 4.9 49/61] ip_vti: receive ipip packet by calling ip_tunnel_rcv Greg Kroah-Hartman
2020-06-01 17:53 ` [PATCH 4.9 50/61] netfilter: nft_reject_bridge: enable reject with bridge vlan Greg Kroah-Hartman
2020-06-01 17:53 ` [PATCH 4.9 51/61] netfilter: ipset: Fix subcounter update skip Greg Kroah-Hartman
2020-06-01 17:53 ` [PATCH 4.9 52/61] netfilter: nf_conntrack_pptp: prevent buffer overflows in debug code Greg Kroah-Hartman
2020-06-01 17:54 ` [PATCH 4.9 53/61] qlcnic: fix missing release in qlcnic_83xx_interrupt_test Greg Kroah-Hartman
2020-06-01 17:54 ` [PATCH 4.9 54/61] bonding: Fix reference count leak in bond_sysfs_slave_add Greg Kroah-Hartman
2020-06-01 17:54 ` [PATCH 4.9 55/61] Revert "Input: i8042 - add ThinkPad S230u to i8042 nomux list" Greg Kroah-Hartman
2020-06-01 17:54 ` [PATCH 4.9 56/61] netfilter: nf_conntrack_pptp: fix compilation warning with W=1 build Greg Kroah-Hartman
2020-06-01 17:54 ` [PATCH 4.9 57/61] genirq/generic_pending: Do not lose pending affinity update Greg Kroah-Hartman
2020-06-01 17:54 ` [PATCH 4.9 58/61] net: rtnl_configure_link: fix dev flags changes arg to __dev_notify_flags Greg Kroah-Hartman
2020-06-01 17:54 ` [PATCH 4.9 59/61] mm/vmalloc.c: dont dereference possible NULL pointer in __vunmap() Greg Kroah-Hartman
2020-06-01 17:54 ` [PATCH 4.9 60/61] sc16is7xx: move label err_spi to correct section Greg Kroah-Hartman
2020-06-01 17:54 ` [PATCH 4.9 61/61] net: hns: Fixes the missing put_device in positive leg for roce reset Greg Kroah-Hartman
2020-06-02 2:34 ` [PATCH 4.9 00/61] 4.9.226-rc1 review Guenter Roeck
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