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c06cf3b1d0
[ Upstream commit 1030d681319b43869e0d5b568b9d0226652d1a6f ] I've got the following splat after enabling preemption: [ 3.724721] BUG: using __this_cpu_add() in preemptible [00000000] code: swapper/0/1 [ 3.734630] caller is __this_cpu_preempt_check+0x38/0x50 [ 3.740635] CPU: 1 PID: 1 Comm: swapper/0 Not tainted 5.15.0-rc4-64bit+ #324 [ 3.744605] Hardware name: 9000/785/C8000 [ 3.744605] Backtrace: [ 3.744605] [<00000000401d9d58>] show_stack+0x74/0xb0 [ 3.744605] [<0000000040c27bd4>] dump_stack_lvl+0x10c/0x188 [ 3.744605] [<0000000040c27c84>] dump_stack+0x34/0x48 [ 3.744605] [<0000000040c33438>] check_preemption_disabled+0x178/0x1b0 [ 3.744605] [<0000000040c334f8>] __this_cpu_preempt_check+0x38/0x50 [ 3.744605] [<00000000401d632c>] flush_tlb_all+0x58/0x2e0 [ 3.744605] [<00000000401075c0>] 0x401075c0 [ 3.744605] [<000000004010b8fc>] 0x4010b8fc [ 3.744605] [<00000000401080fc>] 0x401080fc [ 3.744605] [<00000000401d5224>] do_one_initcall+0x128/0x378 [ 3.744605] [<0000000040102de8>] 0x40102de8 [ 3.744605] [<0000000040c33864>] kernel_init+0x60/0x3a8 [ 3.744605] [<00000000401d1020>] ret_from_kernel_thread+0x20/0x28 [ 3.744605] Fix this by moving the __inc_irq_stat() into the locked section. Signed-off-by: Sven Schnelle <svens@stackframe.org> Signed-off-by: Helge Deller <deller@gmx.de> Signed-off-by: Sasha Levin <sashal@kernel.org> |
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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.