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| Filename | Latest commit message | Latest commit date |
|---|---|---|
af959b18fd
systemtap folks reported the following splat recently: [ 7790.862212] WARNING: CPU: 3 PID: 26759 at arch/x86/kernel/kprobes/core.c:1022 kprobe_fault_handler+0xec/0xf0 [...] [ 7790.864113] CPU: 3 PID: 26759 Comm: sshd Not tainted 5.1.0-0.rc7.git1.1.fc31.x86_64 #1 [ 7790.864198] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS[...] [ 7790.864314] RIP: 0010:kprobe_fault_handler+0xec/0xf0 [ 7790.864375] Code: 48 8b 50 [...] [ 7790.864714] RSP: 0018:ffffc06800bdbb48 EFLAGS: 00010082 [ 7790.864812] RAX: ffff9e2b75a16320 RBX: 0000000000000000 RCX: 0000000000000000 [ 7790.865306] RDX: ffffffffffffffff RSI: 000000000000000e RDI: ffffc06800bdbbf8 [ 7790.865514] RBP: ffffc06800bdbbf8 R08: 0000000000000000 R09: 0000000000000000 [ 7790.865960] R10: 0000000000000000 R11: 0000000000000000 R12: ffffc06800bdbbf8 [ 7790.866037] R13: ffff9e2ab56a0418 R14: ffff9e2b6d0bb400 R15: ffff9e2b6d268000 [ 7790.866114] FS: 00007fde49937d80(0000) GS:ffff9e2b75a00000(0000) knlGS:0000000000000000 [ 7790.866193] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 7790.866318] CR2: 0000000000000000 CR3: 000000012f312000 CR4: 00000000000006e0 [ 7790.866419] Call Trace: [ 7790.866677] do_user_addr_fault+0x64/0x480 [ 7790.867513] do_page_fault+0x33/0x210 [ 7790.868002] async_page_fault+0x1e/0x30 [ 7790.868071] RIP: 0010: (null) [ 7790.868144] Code: Bad RIP value. [ 7790.868229] RSP: 0018:ffffc06800bdbca8 EFLAGS: 00010282 [ 7790.868362] RAX: ffff9e2b598b60f8 RBX: ffffc06800bdbe48 RCX: 0000000000000004 [ 7790.868629] RDX: 0000000000000004 RSI: ffffc06800bdbc6c RDI: ffff9e2b598b60f0 [ 7790.868834] RBP: ffffc06800bdbcf8 R08: 0000000000000000 R09: 0000000000000004 [ 7790.870432] R10: 00000000ff6f7a03 R11: 0000000000000000 R12: 0000000000000001 [ 7790.871859] R13: ffffc06800bdbcb8 R14: 0000000000000000 R15: ffff9e2acd0a5310 [ 7790.873455] ? vfs_read+0x5/0x170 [ 7790.874639] ? vfs_read+0x1/0x170 [ 7790.875834] ? trace_call_bpf+0xf6/0x260 [ 7790.877044] ? vfs_read+0x1/0x170 [ 7790.878208] ? vfs_read+0x5/0x170 [ 7790.879345] ? kprobe_perf_func+0x233/0x260 [ 7790.880503] ? vfs_read+0x1/0x170 [ 7790.881632] ? vfs_read+0x5/0x170 [ 7790.882751] ? kprobe_ftrace_handler+0x92/0xf0 [ 7790.883926] ? __vfs_read+0x30/0x30 [ 7790.885050] ? ftrace_ops_assist_func+0x94/0x100 [ 7790.886183] ? vfs_read+0x1/0x170 [ 7790.887283] ? vfs_read+0x5/0x170 [ 7790.888348] ? ksys_read+0x5a/0xe0 [ 7790.889389] ? do_syscall_64+0x5c/0xa0 [ 7790.890401] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe After some debugging, turns out that the logic in |
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| 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.