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| Filename | Latest commit message | Latest commit date |
|---|---|---|
63a4174682
When rmmod hip04_eth.ko, we can get the following warning: Task track: rmmod(1623)>bash(1591)>login(1581)>init(1) ------------[ cut here ]------------ WARNING: CPU: 0 PID: 1623 at kernel/irq/manage.c:1557 __free_irq+0xa4/0x2ac() Trying to free already-free IRQ 200 Modules linked in: ping(O) pramdisk(O) cpuinfo(O) rtos_snapshot(O) interrupt_ctrl(O) mtdblock mtd_blkdevrtfs nfs_acl nfs lockd grace sunrpc xt_tcpudp ipt_REJECT iptable_filter ip_tables x_tables nf_reject_ipv CPU: 0 PID: 1623 Comm: rmmod Tainted: G O 4.4.193 #1 Hardware name: Hisilicon A15 [<c020b408>] (rtos_unwind_backtrace) from [<c0206624>] (show_stack+0x10/0x14) [<c0206624>] (show_stack) from [<c03f2be4>] (dump_stack+0xa0/0xd8) [<c03f2be4>] (dump_stack) from [<c021a780>] (warn_slowpath_common+0x84/0xb0) [<c021a780>] (warn_slowpath_common) from [<c021a7e8>] (warn_slowpath_fmt+0x3c/0x68) [<c021a7e8>] (warn_slowpath_fmt) from [<c026876c>] (__free_irq+0xa4/0x2ac) [<c026876c>] (__free_irq) from [<c0268a14>] (free_irq+0x60/0x7c) [<c0268a14>] (free_irq) from [<c0469e80>] (release_nodes+0x1c4/0x1ec) [<c0469e80>] (release_nodes) from [<c0466924>] (__device_release_driver+0xa8/0x104) [<c0466924>] (__device_release_driver) from [<c0466a80>] (driver_detach+0xd0/0xf8) [<c0466a80>] (driver_detach) from [<c0465e18>] (bus_remove_driver+0x64/0x8c) [<c0465e18>] (bus_remove_driver) from [<c02935b0>] (SyS_delete_module+0x198/0x1e0) [<c02935b0>] (SyS_delete_module) from [<c0202ed0>] (__sys_trace_return+0x0/0x10) ---[ end trace bb25d6123d849b44 ]--- Currently "rmmod hip04_eth.ko" call free_irq more than once as devres_release_all and hip04_remove both call free_irq. This results in a 'Trying to free already-free IRQ' warning. To solve the problem free_irq has been moved out of hip04_remove. Signed-off-by: Jiangfeng Xiao <xiaojiangfeng@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net> |
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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.