From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To: linux-kernel@vger.kernel.org
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
stable@vger.kernel.org, Jan Kara <jack@suse.cz>,
Shijie Luo <luoshijie1@huawei.com>, Theodore Tso <tytso@mit.edu>,
stable@kernel.org, Ben Hutchings <ben.hutchings@codethink.co.uk>
Subject: [PATCH 4.14 01/59] ext4: add cond_resched() to ext4_protect_reserved_inode
Date: Tue, 26 May 2020 20:52:46 +0200 [thread overview]
Message-ID: <20200526183907.638284580@linuxfoundation.org> (raw)
In-Reply-To: <20200526183907.123822792@linuxfoundation.org>
From: Shijie Luo <luoshijie1@huawei.com>
commit af133ade9a40794a37104ecbcc2827c0ea373a3c upstream.
When journal size is set too big by "mkfs.ext4 -J size=", or when
we mount a crafted image to make journal inode->i_size too big,
the loop, "while (i < num)", holds cpu too long. This could cause
soft lockup.
[ 529.357541] Call trace:
[ 529.357551] dump_backtrace+0x0/0x198
[ 529.357555] show_stack+0x24/0x30
[ 529.357562] dump_stack+0xa4/0xcc
[ 529.357568] watchdog_timer_fn+0x300/0x3e8
[ 529.357574] __hrtimer_run_queues+0x114/0x358
[ 529.357576] hrtimer_interrupt+0x104/0x2d8
[ 529.357580] arch_timer_handler_virt+0x38/0x58
[ 529.357584] handle_percpu_devid_irq+0x90/0x248
[ 529.357588] generic_handle_irq+0x34/0x50
[ 529.357590] __handle_domain_irq+0x68/0xc0
[ 529.357593] gic_handle_irq+0x6c/0x150
[ 529.357595] el1_irq+0xb8/0x140
[ 529.357599] __ll_sc_atomic_add_return_acquire+0x14/0x20
[ 529.357668] ext4_map_blocks+0x64/0x5c0 [ext4]
[ 529.357693] ext4_setup_system_zone+0x330/0x458 [ext4]
[ 529.357717] ext4_fill_super+0x2170/0x2ba8 [ext4]
[ 529.357722] mount_bdev+0x1a8/0x1e8
[ 529.357746] ext4_mount+0x44/0x58 [ext4]
[ 529.357748] mount_fs+0x50/0x170
[ 529.357752] vfs_kern_mount.part.9+0x54/0x188
[ 529.357755] do_mount+0x5ac/0xd78
[ 529.357758] ksys_mount+0x9c/0x118
[ 529.357760] __arm64_sys_mount+0x28/0x38
[ 529.357764] el0_svc_common+0x78/0x130
[ 529.357766] el0_svc_handler+0x38/0x78
[ 529.357769] el0_svc+0x8/0xc
[ 541.356516] watchdog: BUG: soft lockup - CPU#0 stuck for 23s! [mount:18674]
Link: https://lore.kernel.org/r/20200211011752.29242-1-luoshijie1@huawei.com
Reviewed-by: Jan Kara <jack@suse.cz>
Signed-off-by: Shijie Luo <luoshijie1@huawei.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Cc: stable@kernel.org
Cc: Ben Hutchings <ben.hutchings@codethink.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
fs/ext4/block_validity.c | 1 +
1 file changed, 1 insertion(+)
--- a/fs/ext4/block_validity.c
+++ b/fs/ext4/block_validity.c
@@ -153,6 +153,7 @@ static int ext4_protect_reserved_inode(s
return PTR_ERR(inode);
num = (inode->i_size + sb->s_blocksize - 1) >> sb->s_blocksize_bits;
while (i < num) {
+ cond_resched();
map.m_lblk = i;
map.m_len = num - i;
n = ext4_map_blocks(NULL, inode, &map, 0);
next prev parent reply other threads:[~2020-05-26 19:30 UTC|newest]
Thread overview: 64+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-05-26 18:52 [PATCH 4.14 00/59] 4.14.182-rc1 review Greg Kroah-Hartman
2020-05-26 18:52 ` Greg Kroah-Hartman [this message]
2020-05-26 18:52 ` [PATCH 4.14 02/59] watchdog: Fix the race between the release of watchdog_core_data and cdev Greg Kroah-Hartman
2020-05-26 18:52 ` [PATCH 4.14 03/59] i2c: dev: Fix the race between the release of i2c_dev " Greg Kroah-Hartman
2020-05-26 18:52 ` [PATCH 4.14 04/59] padata: ensure the reorder timer callback runs on the correct CPU Greg Kroah-Hartman
2020-05-26 18:52 ` [PATCH 4.14 05/59] padata: ensure padata_do_serial() " Greg Kroah-Hartman
2020-05-26 18:52 ` [PATCH 4.14 06/59] ima: Set file->f_mode instead of file->f_flags in ima_calc_file_hash() Greg Kroah-Hartman
2020-05-26 18:52 ` [PATCH 4.14 07/59] evm: Check also if *tfm is an error pointer in init_desc() Greg Kroah-Hartman
2020-05-26 18:52 ` [PATCH 4.14 08/59] ima: Fix return value of ima_write_policy() Greg Kroah-Hartman
2020-05-26 18:52 ` [PATCH 4.14 09/59] fix multiplication overflow in copy_fdtable() Greg Kroah-Hartman
2020-05-26 18:52 ` [PATCH 4.14 10/59] iommu/amd: Fix over-read of ACPI UID from IVRS table Greg Kroah-Hartman
2020-05-26 18:52 ` [PATCH 4.14 11/59] i2c: mux: demux-pinctrl: Fix an error handling path in i2c_demux_pinctrl_probe() Greg Kroah-Hartman
2020-05-26 18:52 ` [PATCH 4.14 12/59] ubi: Fix seq_file usage in detailed_erase_block_info debugfs file Greg Kroah-Hartman
2020-05-26 18:52 ` [PATCH 4.14 13/59] gcc-common.h: Update for GCC 10 Greg Kroah-Hartman
2020-05-26 18:52 ` [PATCH 4.14 14/59] HID: multitouch: add eGalaxTouch P80H84 support Greg Kroah-Hartman
2020-05-26 18:53 ` [PATCH 4.14 15/59] scsi: qla2xxx: Fix hang when issuing nvme disconnect-all in NPIV Greg Kroah-Hartman
2020-05-26 18:53 ` [PATCH 4.14 16/59] configfs: fix config_item refcnt leak in configfs_rmdir() Greg Kroah-Hartman
2020-05-26 18:53 ` [PATCH 4.14 17/59] vhost/vsock: fix packet delivery order to monitoring devices Greg Kroah-Hartman
2020-05-26 18:53 ` [PATCH 4.14 18/59] component: Silence bind error on -EPROBE_DEFER Greg Kroah-Hartman
2020-05-26 18:53 ` [PATCH 4.14 19/59] scsi: ibmvscsi: Fix WARN_ON during event pool release Greg Kroah-Hartman
2020-05-26 18:53 ` [PATCH 4.14 20/59] x86/apic: Move TSC deadline timer debug printk Greg Kroah-Hartman
2020-05-26 18:53 ` [PATCH 4.14 21/59] gtp: set NLM_F_MULTI flag in gtp_genl_dump_pdp() Greg Kroah-Hartman
2020-05-26 18:53 ` [PATCH 4.14 22/59] ceph: fix double unlock in handle_cap_export() Greg Kroah-Hartman
2020-05-26 18:53 ` [PATCH 4.14 23/59] USB: core: Fix misleading driver bug report Greg Kroah-Hartman
2020-05-26 18:53 ` [PATCH 4.14 24/59] platform/x86: asus-nb-wmi: Do not load on Asus T100TA and T200TA Greg Kroah-Hartman
2020-05-26 18:53 ` [PATCH 4.14 25/59] ARM: futex: Address build warning Greg Kroah-Hartman
2020-05-26 18:53 ` [PATCH 4.14 26/59] padata: set cpu_index of unused CPUs to -1 Greg Kroah-Hartman
2020-05-26 18:53 ` [PATCH 4.14 27/59] padata: Replace delayed timer with immediate workqueue in padata_reorder Greg Kroah-Hartman
2020-05-26 18:53 ` [PATCH 4.14 28/59] padata: initialize pd->cpu with effective cpumask Greg Kroah-Hartman
2020-05-26 18:53 ` [PATCH 4.14 29/59] padata: purge get_cpu and reorder_via_wq from padata_do_serial Greg Kroah-Hartman
2020-05-26 18:53 ` [PATCH 4.14 30/59] arm64: fix the flush_icache_range arguments in machine_kexec Greg Kroah-Hartman
2020-05-26 18:53 ` [PATCH 4.14 31/59] l2tp: dont register sessions in l2tp_session_create() Greg Kroah-Hartman
2020-05-26 18:53 ` [PATCH 4.14 32/59] l2tp: initialise l2tp_eth sessions before registering them Greg Kroah-Hartman
2020-05-26 18:53 ` [PATCH 4.14 33/59] l2tp: protect sock pointer of struct pppol2tp_session with RCU Greg Kroah-Hartman
2020-05-26 18:53 ` [PATCH 4.14 34/59] l2tp: initialise PPP sessions before registering them Greg Kroah-Hartman
2020-05-26 18:53 ` [PATCH 4.14 35/59] ALSA: iec1712: Initialize STDSP24 properly when using the model=staudio option Greg Kroah-Hartman
2020-05-26 18:53 ` [PATCH 4.14 36/59] ALSA: pcm: fix incorrect hw_base increase Greg Kroah-Hartman
2020-05-26 18:53 ` [PATCH 4.14 37/59] apparmor: Fix aa_label refcnt leak in policy_update Greg Kroah-Hartman
2020-05-26 18:53 ` [PATCH 4.14 38/59] dmaengine: tegra210-adma: Fix an error handling path in tegra_adma_probe() Greg Kroah-Hartman
2020-05-26 18:53 ` [PATCH 4.14 39/59] powerpc: restore alphabetic order in Kconfig Greg Kroah-Hartman
2020-05-26 18:53 ` [PATCH 4.14 40/59] powerpc: Remove STRICT_KERNEL_RWX incompatibility with RELOCATABLE Greg Kroah-Hartman
2020-05-26 18:53 ` [PATCH 4.14 41/59] powerpc/64s: Disable STRICT_KERNEL_RWX Greg Kroah-Hartman
2020-05-26 18:53 ` [PATCH 4.14 42/59] x86/uaccess, ubsan: Fix UBSAN vs. SMAP Greg Kroah-Hartman
2020-05-26 18:53 ` [PATCH 4.14 43/59] ubsan: build ubsan.c more conservatively Greg Kroah-Hartman
2020-05-26 18:53 ` [PATCH 4.14 44/59] libnvdimm/btt: Remove unnecessary code in btt_freelist_init Greg Kroah-Hartman
2020-05-26 18:53 ` [PATCH 4.14 45/59] libnvdimm/btt: Fix LBA masking during free list population Greg Kroah-Hartman
2020-05-26 18:53 ` [PATCH 4.14 46/59] media: fdp1: Fix R-Car M3-N naming in debug message Greg Kroah-Hartman
2020-05-26 18:53 ` [PATCH 4.14 47/59] cxgb4: free mac_hlist properly Greg Kroah-Hartman
2020-05-26 18:53 ` [PATCH 4.14 48/59] cxgb4/cxgb4vf: Fix mac_hlist initialization and free Greg Kroah-Hartman
2020-05-26 18:53 ` [PATCH 4.14 49/59] Revert "gfs2: Dont demote a glock until its revokes are written" Greg Kroah-Hartman
2020-05-26 18:53 ` [PATCH 4.14 50/59] staging: iio: ad2s1210: Fix SPI reading Greg Kroah-Hartman
2020-05-26 18:53 ` [PATCH 4.14 51/59] staging: greybus: Fix uninitialized scalar variable Greg Kroah-Hartman
2020-05-26 18:53 ` [PATCH 4.14 52/59] iio: sca3000: Remove an erroneous get_device() Greg Kroah-Hartman
2020-05-26 18:53 ` [PATCH 4.14 53/59] iio: dac: vf610: Fix an error handling path in vf610_dac_probe() Greg Kroah-Hartman
2020-05-26 18:53 ` [PATCH 4.14 54/59] mei: release me_cl object reference Greg Kroah-Hartman
2020-05-26 18:53 ` [PATCH 4.14 55/59] rapidio: fix an error in get_user_pages_fast() error handling Greg Kroah-Hartman
2020-05-26 18:53 ` [PATCH 4.14 56/59] rxrpc: Fix a memory leak in rxkad_verify_response() Greg Kroah-Hartman
2020-05-26 18:53 ` [PATCH 4.14 57/59] x86/unwind/orc: Fix unwind_get_return_address_ptr() for inactive tasks Greg Kroah-Hartman
2020-05-26 18:53 ` [PATCH 4.14 58/59] iio: adc: stm32-adc: Use dma_request_chan() instead dma_request_slave_channel() Greg Kroah-Hartman
2020-05-26 18:53 ` [PATCH 4.14 59/59] iio: adc: stm32-adc: fix device used to request dma Greg Kroah-Hartman
2020-05-27 8:32 ` [PATCH 4.14 00/59] 4.14.182-rc1 review Jon Hunter
2020-05-27 8:36 ` Naresh Kamboju
2020-05-27 13:51 ` Guenter Roeck
2020-05-27 16:51 ` shuah
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