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| Filename | Latest commit message | Latest commit date |
|---|---|---|
9a9c481593
[ Upstream commit c80a29f0fe9b6f5457e0788e27d1110577eba99b ]
Replace usleep_range() method with udelay() method to allow atomic contexts
in low-level MDIO access functions.
The following issue can be seen by doing the following:
$ modprobe -r bonding
$ modprobe -v bonding max_bonds=1 mode=1 miimon=100 use_carrier=0
$ ip link set bond0 up
$ ifenslave bond0 eth0 eth1
[ 982.357308] BUG: scheduling while atomic: kworker/u64:0/9/0x00000002
[ 982.364431] INFO: lockdep is turned off.
[ 982.368824] Modules linked in: bonding sctp ip6_udp_tunnel udp_tunnel mlx4_ib ib_uverbs ib_core mlx4_en mlx4_core nfp tls sunrpc intel_rapl_msr iTCO_wdt iTCO_vendor_support mxm_wmi dcdbas intel_rapl_common sb_edac x86_pkg_temp_thermal intel_powerclamp coretemp kvm_intel kvm irqbypass crct10dif_pclmul crc32_pclmul ghash_clmulni_intel rapl intel_cstate intel_uncore pcspkr lpc_ich mei_me ipmi_ssif mei ipmi_si ipmi_devintf ipmi_msghandler wmi acpi_power_meter xfs libcrc32c sr_mod cdrom sd_mod t10_pi sg mgag200 drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops drm ahci libahci crc32c_intel libata i2c_algo_bit tg3 megaraid_sas igc dm_mirror dm_region_hash dm_log dm_mod [last unloaded: bonding]
[ 982.437941] CPU: 25 PID: 9 Comm: kworker/u64:0 Kdump: loaded Tainted: G W --------- - - 4.18.0-348.el8.x86_64+debug #1
[ 982.451333] Hardware name: Dell Inc. PowerEdge R730/0H21J3, BIOS 2.7.0 12/005/2017
[ 982.459791] Workqueue: bond0 bond_mii_monitor [bonding]
[ 982.465622] Call Trace:
[ 982.468355] dump_stack+0x8e/0xd0
[ 982.472056] __schedule_bug.cold.60+0x3a/0x60
[ 982.476919] __schedule+0x147b/0x1bc0
[ 982.481007] ? firmware_map_remove+0x16b/0x16b
[ 982.485967] ? hrtimer_fixup_init+0x40/0x40
[ 982.490625] schedule+0xd9/0x250
[ 982.494227] schedule_hrtimeout_range_clock+0x10d/0x2c0
[ 982.500058] ? hrtimer_nanosleep_restart+0x130/0x130
[ 982.505598] ? hrtimer_init_sleeper_on_stack+0x90/0x90
[ 982.511332] ? usleep_range+0x88/0x130
[ 982.515514] ? recalibrate_cpu_khz+0x10/0x10
[ 982.520279] ? ktime_get+0xab/0x1c0
[ 982.524175] ? usleep_range+0x88/0x130
[ 982.528355] usleep_range+0xdd/0x130
[ 982.532344] ? console_conditional_schedule+0x30/0x30
[ 982.537987] ? igc_put_hw_semaphore+0x17/0x60 [igc]
[ 982.543432] igc_read_phy_reg_gpy+0x111/0x2b0 [igc]
[ 982.548887] igc_phy_has_link+0xfa/0x260 [igc]
[ 982.553847] ? igc_get_phy_id+0x210/0x210 [igc]
[ 982.558894] ? lock_acquire+0x34d/0x890
[ 982.563187] ? lock_downgrade+0x710/0x710
[ 982.567659] ? rcu_read_unlock+0x50/0x50
[ 982.572039] igc_check_for_copper_link+0x106/0x210 [igc]
[ 982.577970] ? igc_config_fc_after_link_up+0x840/0x840 [igc]
[ 982.584286] ? rcu_read_unlock+0x50/0x50
[ 982.588661] ? lock_release+0x591/0xb80
[ 982.592939] ? lock_release+0x591/0xb80
[ 982.597220] igc_has_link+0x113/0x330 [igc]
[ 982.601887] ? lock_downgrade+0x710/0x710
[ 982.606362] igc_ethtool_get_link+0x6d/0x90 [igc]
[ 982.611614] bond_check_dev_link+0x131/0x2c0 [bonding]
[ 982.617350] ? bond_time_in_interval+0xd0/0xd0 [bonding]
[ 982.623277] ? rcu_read_lock_held+0x62/0xc0
[ 982.627944] ? rcu_read_lock_sched_held+0xe0/0xe0
[ 982.633198] bond_mii_monitor+0x314/0x2500 [bonding]
[ 982.638738] ? lock_contended+0x880/0x880
[ 982.643214] ? bond_miimon_link_change+0xa0/0xa0 [bonding]
[ 982.649336] ? lock_acquire+0x34d/0x890
[ 982.653615] ? lock_downgrade+0x710/0x710
[ 982.658089] ? debug_object_deactivate+0x221/0x340
[ 982.663436] ? rcu_read_unlock+0x50/0x50
[ 982.667811] ? debug_print_object+0x2b0/0x2b0
[ 982.672672] ? __switch_to_asm+0x41/0x70
[ 982.677049] ? __switch_to_asm+0x35/0x70
[ 982.681426] ? _raw_spin_unlock_irq+0x24/0x40
[ 982.686288] ? trace_hardirqs_on+0x20/0x195
[ 982.690956] ? _raw_spin_unlock_irq+0x24/0x40
[ 982.695818] process_one_work+0x8f0/0x1770
[ 982.700390] ? pwq_dec_nr_in_flight+0x320/0x320
[ 982.705443] ? debug_show_held_locks+0x50/0x50
[ 982.710403] worker_thread+0x87/0xb40
[ 982.714489] ? process_one_work+0x1770/0x1770
[ 982.719349] kthread+0x344/0x410
[ 982.722950] ? kthread_insert_work_sanity_check+0xd0/0xd0
[ 982.728975] ret_from_fork+0x3a/0x50
Fixes:
|
||
| arch | ||
| block | ||
| certs | ||
| crypto | ||
| Documentation | ||
| drivers | ||
| fs | ||
| include | ||
| init | ||
| ipc | ||
| kernel | ||
| lib | ||
| LICENSES | ||
| mm | ||
| net | ||
| samples | ||
| scripts | ||
| security | ||
| sound | ||
| tools | ||
| usr | ||
| virt | ||
| .clang-format | ||
| .cocciconfig | ||
| .get_maintainer.ignore | ||
| .gitattributes | ||
| .gitignore | ||
| .mailmap | ||
| COPYING | ||
| CREDITS | ||
| Kbuild | ||
| Kconfig | ||
| MAINTAINERS | ||
| Makefile | ||
| README | ||
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.