From: David Laight <david.laight.linux@gmail.com>
To: Steven Rostedt <rostedt@goodmis.org>
Cc: Kent Overstreet <kent.overstreet@linux.dev>,
James Bottomley <James.Bottomley@hansenpartnership.com>,
Greg KH <gregkh@linuxfoundation.org>,
Miguel Ojeda <miguel.ojeda.sandonis@gmail.com>,
Ventura Jack <venturajack85@gmail.com>,
"H. Peter Anvin" <hpa@zytor.com>,
Alice Ryhl <aliceryhl@google.com>,
Linus Torvalds <torvalds@linux-foundation.org>,
Gary Guo <gary@garyguo.net>,
airlied@gmail.com, boqun.feng@gmail.com, hch@infradead.org,
ksummit@lists.linux.dev, linux-kernel@vger.kernel.org,
rust-for-linux@vger.kernel.org, Ralf Jung <post@ralfj.de>,
Josh Poimboeuf <jpoimboe@redhat.com>
Subject: Re: C aggregate passing (Rust kernel policy)
Date: Sun, 2 Mar 2025 12:19:57 +0000 [thread overview]
Message-ID: <20250302121957.28f08504@pumpkin> (raw)
In-Reply-To: <20250226124733.10b4b5fa@gandalf.local.home>
On Wed, 26 Feb 2025 12:47:33 -0500
Steven Rostedt <rostedt@goodmis.org> wrote:
> On Wed, 26 Feb 2025 12:41:30 -0500
> Kent Overstreet <kent.overstreet@linux.dev> wrote:
>
> > It's been awhile since I've looked at one, I've been just automatically
> > switching back to frame pointers for awhile, but - I never saw
> > inaccurate backtraces, just failure to generate a backtrace - if memory
> > serves.
>
> OK, maybe if the bug was bad enough, it couldn't get access to the ORC
> tables for some reason. Not having a backtrace on crash is not as bad as
> incorrect back traces, as the former is happening when the system is dieing
> and live kernel patching doesn't help with that.
I bet to differ.
With no backtrace you have absolutely no idea what happened.
A list of 'code addresses on the stack' (named as such) can be enough
to determine the call sequence.
Although to be really helpful you need a hexdump of the actual stack
and the stack addresses of each 'code address'.
David
next prev parent reply other threads:[~2025-03-02 12:20 UTC|newest]
Thread overview: 196+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-02-22 10:06 C aggregate passing (Rust kernel policy) Ventura Jack
2025-02-22 14:15 ` Gary Guo
2025-02-22 15:03 ` Ventura Jack
2025-02-22 18:54 ` Kent Overstreet
2025-02-22 19:18 ` Linus Torvalds
2025-02-22 20:00 ` Kent Overstreet
2025-02-22 20:54 ` H. Peter Anvin
2025-02-22 21:22 ` Kent Overstreet
2025-02-22 21:46 ` Linus Torvalds
2025-02-22 22:34 ` Kent Overstreet
2025-02-22 23:56 ` Jan Engelhardt
2025-02-22 22:12 ` David Laight
2025-02-22 22:46 ` Kent Overstreet
2025-02-22 23:50 ` H. Peter Anvin
2025-02-23 0:06 ` Kent Overstreet
2025-02-22 21:22 ` Linus Torvalds
2025-02-23 15:30 ` Ventura Jack
2025-02-23 16:28 ` David Laight
2025-02-24 0:27 ` Gary Guo
2025-02-24 9:57 ` Ventura Jack
2025-02-24 10:31 ` Benno Lossin
2025-02-24 12:21 ` Ventura Jack
2025-02-24 12:47 ` Benno Lossin
2025-02-24 16:57 ` Ventura Jack
2025-02-24 22:03 ` Benno Lossin
2025-02-24 23:04 ` Ventura Jack
2025-02-25 22:38 ` Benno Lossin
2025-02-25 22:47 ` Miguel Ojeda
2025-02-25 23:03 ` Benno Lossin
2025-02-24 12:58 ` Theodore Ts'o
2025-02-24 14:47 ` Miguel Ojeda
2025-02-24 14:54 ` Miguel Ojeda
2025-02-24 16:42 ` Philip Herron
2025-02-25 15:55 ` Ventura Jack
2025-02-25 17:30 ` Arthur Cohen
2025-02-26 11:38 ` Ralf Jung
2025-02-24 15:43 ` Miguel Ojeda
2025-02-24 17:24 ` Kent Overstreet
2025-02-25 16:12 ` Alice Ryhl
2025-02-25 17:21 ` Ventura Jack
2025-02-25 17:36 ` Alice Ryhl
2025-02-25 18:16 ` H. Peter Anvin
2025-02-25 20:21 ` Kent Overstreet
2025-02-25 20:37 ` H. Peter Anvin
2025-02-26 13:03 ` Ventura Jack
2025-02-26 13:53 ` Miguel Ojeda
2025-02-26 14:07 ` Ralf Jung
2025-02-26 14:26 ` James Bottomley
2025-02-26 14:37 ` Ralf Jung
2025-02-26 14:39 ` Greg KH
2025-02-26 14:45 ` James Bottomley
2025-02-26 16:00 ` Steven Rostedt
2025-02-26 16:42 ` James Bottomley
2025-02-26 16:47 ` Kent Overstreet
2025-02-26 16:57 ` Steven Rostedt
2025-02-26 17:41 ` Kent Overstreet
2025-02-26 17:47 ` Steven Rostedt
2025-02-26 22:07 ` Josh Poimboeuf
2025-03-02 12:19 ` David Laight [this message]
2025-02-26 17:11 ` Miguel Ojeda
2025-02-26 17:42 ` Kent Overstreet
2025-02-26 12:36 ` Ventura Jack
2025-02-26 13:52 ` Miguel Ojeda
2025-02-26 15:21 ` Ventura Jack
2025-02-26 16:06 ` Ralf Jung
2025-02-26 17:49 ` Miguel Ojeda
2025-02-26 18:36 ` Ventura Jack
2025-02-26 14:14 ` Ralf Jung
2025-02-26 15:40 ` Ventura Jack
2025-02-26 16:10 ` Ralf Jung
2025-02-26 16:50 ` Ventura Jack
2025-02-26 21:39 ` Ralf Jung
2025-02-27 15:11 ` Ventura Jack
2025-02-27 15:32 ` Ralf Jung
2025-02-25 18:54 ` Linus Torvalds
2025-02-25 19:47 ` Kent Overstreet
2025-02-25 20:25 ` Linus Torvalds
2025-02-25 20:55 ` Kent Overstreet
2025-02-25 21:24 ` Linus Torvalds
2025-02-25 23:34 ` Kent Overstreet
2025-02-26 11:57 ` Gary Guo
2025-02-27 14:43 ` Ventura Jack
2025-02-26 14:26 ` Ventura Jack
2025-02-25 22:45 ` Miguel Ojeda
2025-02-26 0:05 ` Miguel Ojeda
2025-02-25 22:42 ` Miguel Ojeda
2025-02-26 14:01 ` Ralf Jung
2025-02-26 13:54 ` Ralf Jung
2025-02-26 17:59 ` Linus Torvalds
2025-02-26 19:01 ` Paul E. McKenney
2025-02-26 20:00 ` Martin Uecker
2025-02-26 21:14 ` Linus Torvalds
2025-02-26 21:21 ` Linus Torvalds
2025-02-26 22:54 ` David Laight
2025-02-27 0:35 ` Paul E. McKenney
2025-02-26 21:26 ` Steven Rostedt
2025-02-26 21:37 ` Steven Rostedt
2025-02-26 21:42 ` Linus Torvalds
2025-02-26 21:56 ` Steven Rostedt
2025-02-26 22:13 ` Steven Rostedt
2025-02-26 22:22 ` Linus Torvalds
2025-02-26 22:35 ` Steven Rostedt
2025-02-26 23:18 ` Linus Torvalds
2025-02-26 23:28 ` Steven Rostedt
2025-02-27 0:04 ` Linus Torvalds
2025-02-27 20:47 ` David Laight
2025-02-27 21:33 ` Steven Rostedt
2025-02-28 21:29 ` Paul E. McKenney
2025-02-27 21:41 ` Paul E. McKenney
2025-02-27 22:20 ` David Laight
2025-02-27 22:40 ` Paul E. McKenney
2025-02-28 7:44 ` Ralf Jung
2025-02-28 15:41 ` Kent Overstreet
2025-02-28 15:46 ` Boqun Feng
2025-02-28 16:04 ` Kent Overstreet
2025-02-28 16:13 ` Boqun Feng
2025-02-28 16:21 ` Kent Overstreet
2025-02-28 16:40 ` Boqun Feng
2025-03-04 18:12 ` Ralf Jung
2025-02-26 22:27 ` Kent Overstreet
2025-02-26 23:16 ` Linus Torvalds
2025-02-27 0:17 ` Kent Overstreet
2025-02-27 0:26 ` comex
2025-02-27 18:33 ` Ralf Jung
2025-02-27 19:15 ` Linus Torvalds
2025-02-27 19:55 ` Kent Overstreet
2025-02-27 20:28 ` Linus Torvalds
2025-02-28 7:53 ` Ralf Jung
2025-03-06 19:16 ` Ventura Jack
2025-02-27 4:18 ` Martin Uecker
2025-02-27 5:52 ` Linus Torvalds
2025-02-27 6:56 ` Martin Uecker
2025-02-27 14:29 ` Steven Rostedt
2025-02-27 17:35 ` Paul E. McKenney
2025-02-27 18:13 ` Kent Overstreet
2025-02-27 19:10 ` Paul E. McKenney
2025-02-27 18:00 ` Ventura Jack
2025-02-27 18:44 ` Ralf Jung
2025-02-27 14:21 ` Ventura Jack
2025-02-27 15:27 ` H. Peter Anvin
2025-02-28 8:08 ` Ralf Jung
2025-02-28 8:32 ` Martin Uecker
2025-02-26 20:25 ` Kent Overstreet
2025-02-26 20:34 ` Andy Lutomirski
2025-02-26 22:45 ` David Laight
2025-02-22 19:41 ` Miguel Ojeda
2025-02-22 20:49 ` Kent Overstreet
2025-02-26 11:34 ` Ralf Jung
2025-02-26 14:57 ` Ventura Jack
2025-02-26 16:32 ` Ralf Jung
2025-02-26 18:09 ` Ventura Jack
2025-02-26 22:28 ` Ralf Jung
2025-02-26 23:08 ` David Laight
2025-02-27 13:55 ` Ralf Jung
2025-02-27 17:33 ` Ventura Jack
2025-02-27 17:58 ` Ralf Jung
2025-02-27 19:06 ` Ventura Jack
2025-02-27 19:45 ` Ralf Jung
2025-02-27 20:22 ` Kent Overstreet
2025-02-27 22:18 ` David Laight
2025-02-27 23:18 ` Kent Overstreet
2025-02-28 7:38 ` Ralf Jung
2025-02-28 20:48 ` Ventura Jack
2025-02-28 20:41 ` Ventura Jack
2025-02-28 22:13 ` Geoffrey Thomas
2025-03-01 14:19 ` Ventura Jack
2025-03-04 18:24 ` Ralf Jung
2025-03-06 18:49 ` Ventura Jack
2025-02-27 17:58 ` Miguel Ojeda
2025-02-27 19:25 ` Ventura Jack
2025-02-26 19:07 ` Martin Uecker
2025-02-26 19:23 ` Ralf Jung
2025-02-26 20:22 ` Martin Uecker
[not found] <CAFJgqgRZ1w0ONj2wbcczx2=boXYHoLOd=-ke7tHGBAcifSfPUw@mail.gmail.com>
2025-02-25 15:42 ` H. Peter Anvin
2025-02-25 16:45 ` Ventura Jack
-- strict thread matches above, loose matches on Subject: below --
2025-02-09 20:56 Rust kernel policy Miguel Ojeda
2025-02-18 16:08 ` Christoph Hellwig
2025-02-18 18:46 ` Miguel Ojeda
2025-02-18 21:49 ` H. Peter Anvin
2025-02-18 22:54 ` Miguel Ojeda
2025-02-19 0:58 ` H. Peter Anvin
2025-02-19 3:04 ` Boqun Feng
2025-02-19 5:39 ` Greg KH
2025-02-20 12:28 ` Jan Engelhardt
2025-02-20 12:37 ` Greg KH
2025-02-20 13:23 ` H. Peter Anvin
2025-02-20 15:17 ` C aggregate passing (Rust kernel policy) Jan Engelhardt
2025-02-20 16:46 ` Linus Torvalds
2025-02-20 20:34 ` H. Peter Anvin
2025-02-21 8:31 ` HUANG Zhaobin
2025-02-21 18:34 ` David Laight
2025-02-21 19:12 ` Linus Torvalds
2025-02-21 20:07 ` comex
2025-02-21 21:45 ` David Laight
2025-02-22 6:32 ` Willy Tarreau
2025-02-22 6:37 ` Willy Tarreau
2025-02-22 8:41 ` David Laight
2025-02-22 9:11 ` Willy Tarreau
2025-02-21 20:06 ` Jan Engelhardt
2025-02-21 20:23 ` Laurent Pinchart
2025-02-21 20:24 ` Laurent Pinchart
2025-02-21 22:02 ` David Laight
2025-02-21 22:13 ` Bart Van Assche
2025-02-22 5:56 ` comex
2025-02-21 20:26 ` Linus Torvalds
2025-02-21 22:19 ` henrychurchill
2025-02-21 22:52 ` henrychurchill
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