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3618250c83
An #ifdef CONFIG_PPC_FPU_REGS is missing in arch_ptrace() leading to the following Oops because [REGSET_FPR] entry is not initialised in native_regsets[]. [ 41.917608] BUG: Unable to handle kernel instruction fetch [ 41.922849] Faulting instruction address: 0xff8fd228 [ 41.927760] Oops: Kernel access of bad area, sig: 11 [#1] [ 41.933089] BE PAGE_SIZE=4K PREEMPT CMPC885 [ 41.940753] Modules linked in: [ 41.943768] CPU: 0 PID: 366 Comm: gdb Not tainted 5.12.0-rc5-s3k-dev-01666-g7aac86a0f057-dirty #4835 [ 41.952800] NIP: ff8fd228 LR: c004d9e0 CTR: ff8fd228 [ 41.957790] REGS: caae9df0 TRAP: 0400 Not tainted (5.12.0-rc5-s3k-dev-01666-g7aac86a0f057-dirty) [ 41.966741] MSR: 40009032 <EE,ME,IR,DR,RI> CR: 82004248 XER: 20000000 [ 41.973540] [ 41.973540] GPR00: c004d9b4 caae9eb0 c1b64f60 c1b64520 c0713cd4 caae9eb8 c1bacdfc 00000004 [ 41.973540] GPR08: 00000200 ff8fd228 c1bac700 00001032 28004242 1061aaf4 00000001 106d64a0 [ 41.973540] GPR16: 00000000 00000000 7fa0a774 10610000 7fa0aef9 00000000 10610000 7fa0a538 [ 41.973540] GPR24: 7fa0a580 7fa0a570 c1bacc00 c1b64520 c1bacc00 caae9ee8 00000108 c0713cd4 [ 42.009685] NIP [ff8fd228] 0xff8fd228 [ 42.013300] LR [c004d9e0] __regset_get+0x100/0x124 [ 42.018036] Call Trace: [ 42.020443] [caae9eb0] [c004d9b4] __regset_get+0xd4/0x124 (unreliable) [ 42.026899] [caae9ee0] [c004da94] copy_regset_to_user+0x5c/0xb0 [ 42.032751] [caae9f10] [c002f640] sys_ptrace+0xe4/0x588 [ 42.037915] [caae9f30] [c0011010] ret_from_syscall+0x0/0x28 [ 42.043422] --- interrupt: c00 at 0xfd1f8e4 [ 42.047553] NIP: 0fd1f8e4 LR: 1004a688 CTR: 00000000 [ 42.052544] REGS: caae9f40 TRAP: 0c00 Not tainted (5.12.0-rc5-s3k-dev-01666-g7aac86a0f057-dirty) [ 42.061494] MSR: 0000d032 <EE,PR,ME,IR,DR,RI> CR: 48004442 XER: 00000000 [ 42.068551] [ 42.068551] GPR00: 0000001a 7fa0a040 77dad7e0 |
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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.