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Filename Latest commit message Latest commit date
Josh Poimboeuf d2b1dc3a04 scripts/faddr2line: Fix overlapping text section failures
[ Upstream commit 1d1a0e7c5100d332583e20b40aa8c0a8ed3d7849 ]

There have been some recent reports of faddr2line failures:

  $ scripts/faddr2line sound/soundcore.ko sound_devnode+0x5/0x35
  bad symbol size: base: 0x0000000000000000 end: 0x0000000000000000

  $ ./scripts/faddr2line vmlinux.o enter_from_user_mode+0x24
  bad symbol size: base: 0x0000000000005fe0 end: 0x0000000000005fe0

The problem is that faddr2line is based on 'nm', which has a major
limitation: it doesn't know how to distinguish between different text
sections.  So if an offset exists in multiple text sections in the
object, it may fail.

Rewrite faddr2line to be section-aware, by basing it on readelf.

Fixes: 67326666e2 ("scripts: add script for translating stack dump function offsets")
Reported-by: Kaiwan N Billimoria <kaiwan.billimoria@gmail.com>
Reported-by: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: Josh Poimboeuf <jpoimboe@kernel.org>
Link: https://lore.kernel.org/r/29ff99f86e3da965b6e46c1cc2d72ce6528c17c3.1652382321.git.jpoimboe@kernel.org
Signed-off-by: Sasha Levin <sashal@kernel.org>
2022-06-14 18:11:37 +02:00
arch perf/amd/ibs: Use interrupt regs ip for stack unwinding 2022-06-14 18:11:36 +02:00
block
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Documentation
drivers regulator: pfuze100: Fix refcount leak in pfuze_parse_regulators_dt 2022-06-14 18:11:37 +02:00
fs iomap: iomap_write_failed fix 2022-06-14 18:11:36 +02:00
include x86/speculation: Add missing prototype for unpriv_ebpf_notify() 2022-06-14 18:11:34 +02:00
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kernel sched/fair: Fix cfs_rq_clock_pelt() for throttled cfs_rq 2022-06-14 18:11:33 +02:00
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scripts scripts/faddr2line: Fix overlapping text section failures 2022-06-14 18:11:37 +02:00
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sound ASoC: mxs-saif: Fix refcount leak in mxs_saif_probe 2022-06-14 18:11:36 +02:00
tools perf tools: Add missing headers needed by util/data.h 2022-06-14 18:11:34 +02:00
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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.