LKML Archive on lore.kernel.org
 help / color / Atom feed
From: "Suzuki K. Poulose" <suzuki@in.ibm.com>
To: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>,
	Benjamin Herrenschmidt <benh@kernel.crashing.org>,
	Paul Mackerras <paulus@samba.org>,
	Tony Luck <tony.luck@gmail.com>
Cc: Jeremy Fitzhardinge <jeremy@goop.org>,
	linux-ia64@vger.kernel.org, sparse@chrisli.org,
	"H. Peter Anvin" <hpa@zytor.com>,
	akataria@vmware.com, linux-tip-commits@vger.kernel.org,
	anil.s.keshavamurthy@intel.com, Ingo Molnar <mingo@kernel.org>,
	Fenghua Yu <fenghua.yu@intel.com>, Arnd Bergmann <arnd@arndb.de>,
	Rusty Russell <rusty@rustcorp.com.au>,
	Chris Wright <chrisw@sous-sol.org>,
	yrl.pp-manager.tt@hitachi.com,
	Thomas Gleixner <tglx@linutronix.de>,
	Tony Luck <tony.luck@intel.com>, Kevin Hao <haokexin@gmail.com>,
	Linus Torvalds <torvalds@linux-foundation.org>,
	rdunlap@infradead.org,
	Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
	dl9pf@gmx.de, Andrew Morton <akpm@linux-foundation.org>,
	linuxppc-dev@lists.ozlabs.org,
	"David S. Miller" <davem@davemloft.net>
Subject: Re: [RFT PATCH -next v2] [BUGFIX] kprobes: Fix "Failed to find blacklist" error on ia64 and ppc64
Date: Fri, 30 May 2014 00:43:28 +0530
Message-ID: <538786D8.1070303@in.ibm.com> (raw)
In-Reply-To: <20140527063121.4399.38014.stgit@ltc230.yrl.intra.hitachi.co.jp>

On 05/27/2014 12:01 PM, Masami Hiramatsu wrote:
> On ia64 and ppc64, the function pointer does not point the
> entry address of the function, but the address of function
> discriptor (which contains the entry address and misc
> data.) Since the kprobes passes the function pointer stored
> by NOKPROBE_SYMBOL() to kallsyms_lookup_size_offset() for
> initalizing its blacklist, it fails and reports many errors
> as below.
> 
>   Failed to find blacklist 0001013168300000
>   Failed to find blacklist 0001013000f0a000
>   Failed to find blacklist 000101315f70a000
>   Failed to find blacklist 000101324c80a000
>   Failed to find blacklist 0001013063f0a000
>   Failed to find blacklist 000101327800a000
>   Failed to find blacklist 0001013277f0a000
>   Failed to find blacklist 000101315a70a000
>   Failed to find blacklist 0001013277e0a000
>   Failed to find blacklist 000101305a20a000
>   Failed to find blacklist 0001013277d0a000
>   Failed to find blacklist 00010130bdc0a000
>   Failed to find blacklist 00010130dc20a000
>   Failed to find blacklist 000101309a00a000
>   Failed to find blacklist 0001013277c0a000
>   Failed to find blacklist 0001013277b0a000
>   Failed to find blacklist 0001013277a0a000
>   Failed to find blacklist 000101327790a000
>   Failed to find blacklist 000101303140a000
>   Failed to find blacklist 0001013a3280a000
> 
> To fix this bug, this introduces function_entry() macro to
> retrieve the entry address from the given function pointer,
> and uses for kallsyms_lookup_size_offset() while initializing
> blacklist.
> 
> Changes in V2:
>  - Use function_entry() macro when lookin up symbols instead
>    of storing it.
>  - Update for the latest -next.
> 
> Signed-off-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
> Reported-by: Tony Luck <tony.luck@gmail.com>
> Cc: Suzuki K. Poulose <suzuki@in.ibm.com>
> Cc: Tony Luck <tony.luck@intel.com>
> Cc: Fenghua Yu <fenghua.yu@intel.com>
> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
> Cc: Paul Mackerras <paulus@samba.org>
> Cc: Ananth N Mavinakayanahalli <ananth@in.ibm.com>
> Cc: Kevin Hao <haokexin@gmail.com>
> Cc: linux-ia64@vger.kernel.org
> Cc: linux-kernel@vger.kernel.org
> Cc: linuxppc-dev@lists.ozlabs.org
> ---
>  arch/ia64/include/asm/types.h    |    2 ++
>  arch/powerpc/include/asm/types.h |   11 +++++++++++
>  include/linux/types.h            |    4 ++++
>  kernel/kprobes.c                 |    4 +++-
>  4 files changed, 20 insertions(+), 1 deletion(-)
> 
> diff --git a/arch/ia64/include/asm/types.h b/arch/ia64/include/asm/types.h
> index 4c351b1..95279dd 100644
> --- a/arch/ia64/include/asm/types.h
> +++ b/arch/ia64/include/asm/types.h
> @@ -27,5 +27,7 @@ struct fnptr {
>  	unsigned long gp;
>  };
>  
> +#define function_entry(fn) (((struct fnptr *)(fn))->ip)
> +
>  #endif /* !__ASSEMBLY__ */
>  #endif /* _ASM_IA64_TYPES_H */
> diff --git a/arch/powerpc/include/asm/types.h b/arch/powerpc/include/asm/types.h
> index bfb6ded..8b89d65 100644
> --- a/arch/powerpc/include/asm/types.h
> +++ b/arch/powerpc/include/asm/types.h
> @@ -25,6 +25,17 @@ typedef struct {
>  	unsigned long env;
>  } func_descr_t;
>  
> +#if defined(CONFIG_PPC64) && (!defined(_CALL_ELF) || _CALL_ELF == 1)
> +/*
> + * On PPC64 ABIv1 the function pointer actually points to the
> + * function's descriptor. The first entry in the descriptor is the
> + * address of the function text.
> + */
> +#define function_entry(fn)	(((func_descr_t *)(fn))->entry)
> +#else
> +#define function_entry(fn)	((unsigned long)(fn))
> +#endif
> +
>  #endif /* __ASSEMBLY__ */
>  
>  #endif /* _ASM_POWERPC_TYPES_H */
> diff --git a/include/linux/types.h b/include/linux/types.h
> index a0bb704..3b95369 100644
> --- a/include/linux/types.h
> +++ b/include/linux/types.h
> @@ -213,5 +213,9 @@ struct callback_head {
>  };
>  #define rcu_head callback_head
>  
> +#ifndef function_entry
> +#define function_entry(fn)	((unsigned long)(fn))
> +#endif
> +
>  #endif /*  __ASSEMBLY__ */
>  #endif /* _LINUX_TYPES_H */
> diff --git a/kernel/kprobes.c b/kernel/kprobes.c
> index 2ac9f13..3859c88 100644
> --- a/kernel/kprobes.c
> +++ b/kernel/kprobes.c
> @@ -32,6 +32,7 @@
>   *		<prasanna@in.ibm.com> added function-return probes.
>   */
>  #include <linux/kprobes.h>
> +#include <linux/types.h>
>  #include <linux/hash.h>
>  #include <linux/init.h>
>  #include <linux/slab.h>
> @@ -2042,7 +2043,8 @@ static int __init populate_kprobe_blacklist(unsigned long *start,
>  	unsigned long offset = 0, size = 0;
>  
>  	for (iter = start; iter < end; iter++) {
> -		if (!kallsyms_lookup_size_offset(*iter, &size, &offset)) {
> +		if (!kallsyms_lookup_size_offset(function_entry(*iter),
> +						 &size, &offset)) {

On powerpc we will be able to resolve the *iter to func_descr and won't
get the below error with/without this patch. So we have to actually
verify the kprobe_blacklist contents to make sure everything is alright.

>  			pr_err("Failed to find blacklist %p\n", (void *)*iter);
>  			continue;
>  		}
> 

There is a bug here.
You need to set the ent->start using the function_entry(*iter) and not
*iter. Or else you just avoid the 'Warning' and still have an invalid
black list. As shown below :

    2e:mon> ls kprobe_blacklist
    kprobe_blacklist: c00000000104dad0
    2e:mon> d c00000000104dad0 10
    c00000000104dad0: c0000003aff800a0 c0000003aff809a0
    2e:mon> d c0000003aff800a0 20 (struct kprobe_blacklist *)
    c0000003aff800a0: c0000003aff800c0 c00000000104dad0
    c0000003aff800b0: c0000000010ef138 c0000000010ef188
                      start ^^         end ^^
    2e:mon> la c0000000010ef138 (start)
    c0000000010ef138: notify_die+0x0/0x10 <- still points to the
function descriptor
    2e:mon> la c0000000010ef188 (end)
    c0000000010ef188: __blocking_notifier_call_chain+0x0/0x10


Following patch fixes the issue, with the patch :

1:mon> ls kprobe_blacklist
kprobe_blacklist: c00000000104dad0
1:mon> d c00000000104dad0 10
c00000000104dad0: c0000003ae1a00a0 c0000003ae1a09a0
1:mon> d c0000003ae1a00a0 20 (struct kprobe_blacklist *)
c0000003ae1a00a0: c0000003ae1a00c0 c00000000104dad0
c0000003ae1a00b0: c0000000000b14d0 c0000000000b1520
                      start ^^         end ^^
1:mon> la c0000000000b14d0
c0000000000b14d0: .notify_die+0x0/0x50
1:mon> la c0000000000b1520
c0000000000b1520: .atomic_notifier_chain_register+0x0/0xa0

1:mon> di c0000000000b14d0 10 (.notify_die)
c0000000000b14d0  7c0802a6	mflr	r0
c0000000000b14d4  7c691b78	mr	r9,r3

commit ed51674aca8e0496641f565421ab6691a873e80a
Author: Suzuki K. Poulose <suzuki@in.ibm.com>
Date:   Fri May 30 00:23:01 2014 +0530

diff --git a/kernel/kprobes.c b/kernel/kprobes.c
index 3859c88..b81d626 100644
--- a/kernel/kprobes.c
+++ b/kernel/kprobes.c
@@ -2043,7 +2043,8 @@ static int __init
populate_kprobe_blacklist(unsigned long *start,
        unsigned long offset = 0, size = 0;

        for (iter = start; iter < end; iter++) {
-               if (!kallsyms_lookup_size_offset(function_entry(*iter),
+               unsigned long entry = function_entry(*iter);
+               if (!kallsyms_lookup_size_offset(entry,
                                                 &size, &offset)) {
                        pr_err("Failed to find blacklist %p\n", (void
*)*iter);
                        continue;
@@ -2052,8 +2053,8 @@ static int __init
populate_kprobe_blacklist(unsigned long *start,
                ent = kmalloc(sizeof(*ent), GFP_KERNEL);
                if (!ent)
                        return -ENOMEM;
-               ent->start_addr = *iter;
-               ent->end_addr = *iter + size;
+               ent->start_addr = entry;
+               ent->end_addr = entry + size;
                INIT_LIST_HEAD(&ent->list);
                list_add_tail(&ent->list, &kprobe_blacklist);
        }


Thanks
Suzuki


  reply index

Thread overview: 103+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-04-17  8:16 [PATCH -tip v9 00/26] kprobes: introduce NOKPROBE_SYMBOL, bugfixes and scalbility efforts Masami Hiramatsu
2014-04-17  8:16 ` [PATCH -tip v9 01/26] [BUGFIX]kprobes/x86: Fix page-fault handling logic Masami Hiramatsu
2014-04-17  9:58   ` [tip:perf/urgent] kprobes/x86: " tip-bot for Masami Hiramatsu
2014-04-17  8:16 ` [PATCH -tip v9 02/26] kprobes/x86: Allow to handle reentered kprobe on singlestepping Masami Hiramatsu
2014-04-24 10:57   ` [tip:perf/kprobes] kprobes/x86: Allow to handle reentered kprobe on single-stepping tip-bot for Masami Hiramatsu
2014-04-17  8:16 ` [PATCH -tip v9 03/26] kprobes: Prohibit probing on .entry.text code Masami Hiramatsu
2014-04-24 10:57   ` [tip:perf/kprobes] " tip-bot for Masami Hiramatsu
2014-04-17  8:17 ` [PATCH -tip v9 04/26] kprobes: Introduce NOKPROBE_SYMBOL() macro for blacklist Masami Hiramatsu
2014-04-24 10:58   ` [tip:perf/kprobes] kprobes: Introduce NOKPROBE_SYMBOL() macro to maintain kprobes blacklist tip-bot for Masami Hiramatsu
2014-05-01  5:26     ` kprobes broken in linux-next (was Re: [tip:perf/kprobes] kprobes: Introduce NOKPROBE_SYMBOL() macro to maintain kprobes blacklist) Vineet Gupta
2014-05-02  1:13       ` Masami Hiramatsu
2014-05-07  4:56         ` Vineet Gupta
2014-05-07 19:18       ` [tip:perf/kprobes] kprobes: Ensure blacklist data is aligned tip-bot for Vineet Gupta
2014-05-05 20:48     ` [tip:perf/kprobes] kprobes: Introduce NOKPROBE_SYMBOL() macro to maintain kprobes blacklist Tony Luck
2014-05-06  9:25       ` Masami Hiramatsu
2014-05-06 10:03       ` Masami Hiramatsu
2014-05-07 11:19         ` Masami Hiramatsu
2014-05-07 11:55           ` [RFT PATCH -next ] [BUGFIX] kprobes: Fix "Failed to find blacklist" error on ia64 and ppc64 Masami Hiramatsu
2014-05-07 11:59             ` Masami Hiramatsu
2014-05-14  8:19               ` Masami Hiramatsu
2014-05-08  4:47             ` Ananth N Mavinakayanahalli
2014-05-08  5:40               ` Masami Hiramatsu
2014-05-08  6:16                 ` Ananth N Mavinakayanahalli
2014-05-09  8:06                   ` Masami Hiramatsu
2014-05-26 11:25             ` Suzuki K. Poulose
2014-05-26 11:48               ` Masami Hiramatsu
2014-05-27  6:31               ` [RFT PATCH -next v2] " Masami Hiramatsu
2014-05-29 19:13                 ` Suzuki K. Poulose [this message]
2014-05-30  2:47                   ` Masami Hiramatsu
2014-05-30  3:18                     ` [RFT PATCH -next v3] " Masami Hiramatsu
2014-06-06  6:38                       ` Masami Hiramatsu
2014-06-17 23:03                         ` Tony Luck
2014-06-18  7:56                         ` Michael Ellerman
2014-06-18  8:46                           ` Masami Hiramatsu
2014-06-19  1:30                             ` Michael Ellerman
2014-06-19  4:52                               ` Masami Hiramatsu
2014-06-19  6:40                                 ` Suzuki K. Poulose
2014-06-19  7:26                                   ` Masami Hiramatsu
2014-06-19  9:45                                     ` Suzuki K. Poulose
2014-06-19 11:01                                       ` Masami Hiramatsu
2014-06-19 11:20                                         ` Masami Hiramatsu
2014-06-20  0:37                                           ` Michael Ellerman
2014-06-20  2:13                                             ` Masami Hiramatsu
2014-04-17  8:17 ` [PATCH -tip v9 05/26] [BUGFIX] kprobes/x86: Prohibit probing on debug_stack_* Masami Hiramatsu
2014-04-24 10:58   ` [tip:perf/kprobes] kprobes, x86: Prohibit probing on debug_stack_*() tip-bot for Masami Hiramatsu
2014-04-17  8:17 ` [PATCH -tip v9 06/26] [BUGFIX] x86: Prohibit probing on native_set_debugreg/load_idt Masami Hiramatsu
2014-04-24 10:58   ` [tip:perf/kprobes] kprobes, x86: Prohibit probing on native_set_debugreg()/load_idt() tip-bot for Masami Hiramatsu
2014-04-17  8:17 ` [PATCH -tip v9 07/26] [BUGFIX] x86: Prohibit probing on thunk functions and restore Masami Hiramatsu
2014-04-24 10:58   ` [tip:perf/kprobes] kprobes, " tip-bot for Masami Hiramatsu
2014-04-17  8:17 ` [PATCH -tip v9 08/26] kprobes/x86: Call exception handlers directly from do_int3/do_debug Masami Hiramatsu
2014-04-24 10:59   ` [tip:perf/kprobes] " tip-bot for Masami Hiramatsu
2014-04-24 11:26     ` Jiri Kosina
2014-04-17  8:17 ` [PATCH -tip v9 09/26] x86: Call exception_enter after kprobes handled Masami Hiramatsu
2014-04-24 10:59   ` [tip:perf/kprobes] kprobes, " tip-bot for Masami Hiramatsu
2014-06-13 17:14     ` Frederic Weisbecker
2014-06-14  5:44       ` Masami Hiramatsu
2014-06-14  6:47         ` [PATCH -tip ] [Bugfix] x86/kprobes: Fix build errors and blacklist context_track_user Masami Hiramatsu
2014-06-14  8:58           ` [tip:perf/urgent] " tip-bot for Masami Hiramatsu
2014-06-16 15:52           ` [PATCH -tip ] [Bugfix] " Frederic Weisbecker
2014-04-17  8:17 ` [PATCH -tip v9 10/26] kprobes/x86: Allow probe on some kprobe preparation functions Masami Hiramatsu
2014-04-24 10:59   ` [tip:perf/kprobes] " tip-bot for Masami Hiramatsu
2014-04-17  8:17 ` [PATCH -tip v9 11/26] kprobes: Allow probe on some kprobe functions Masami Hiramatsu
2014-04-24 10:59   ` [tip:perf/kprobes] " tip-bot for Masami Hiramatsu
2014-04-17  8:18 ` [PATCH -tip v9 12/26] ftrace/*probes: Allow probing on some functions Masami Hiramatsu
2014-04-24 10:59   ` [tip:perf/kprobes] kprobes, ftrace: " tip-bot for Masami Hiramatsu
2014-04-17  8:18 ` [PATCH -tip v9 13/26] x86: Allow kprobes on text_poke/hw_breakpoint Masami Hiramatsu
2014-04-24 11:00   ` [tip:perf/kprobes] kprobes, x86: Allow kprobes on text_poke/ hw_breakpoint tip-bot for Masami Hiramatsu
2014-04-24 11:26     ` Jiri Kosina
2014-04-17  8:18 ` [PATCH -tip v9 14/26] x86: Use NOKPROBE_SYMBOL() instead of __kprobes annotation Masami Hiramatsu
2014-04-24 11:00   ` [tip:perf/kprobes] kprobes, " tip-bot for Masami Hiramatsu
2014-04-17  8:18 ` [PATCH -tip v9 15/26] kprobes: Use NOKPROBE_SYMBOL macro instead of __kprobes Masami Hiramatsu
2014-04-24 11:00   ` [tip:perf/kprobes] " tip-bot for Masami Hiramatsu
2014-04-17  8:18 ` [PATCH -tip v9 16/26] ftrace/kprobes: Use NOKPROBE_SYMBOL macro in ftrace Masami Hiramatsu
2014-04-24 11:00   ` [tip:perf/kprobes] kprobes, ftrace: " tip-bot for Masami Hiramatsu
2014-04-17  8:18 ` [PATCH -tip v9 17/26] notifier: Use NOKPROBE_SYMBOL macro in notifier Masami Hiramatsu
2014-04-17 14:40   ` Josh Triplett
2014-04-24 11:00   ` [tip:perf/kprobes] kprobes, " tip-bot for Masami Hiramatsu
2014-04-17  8:18 ` [PATCH -tip v9 18/26] sched: Use NOKPROBE_SYMBOL macro in sched Masami Hiramatsu
2014-04-24 11:01   ` [tip:perf/kprobes] kprobes, " tip-bot for Masami Hiramatsu
2014-04-17  8:18 ` [PATCH -tip v9 19/26] kprobes: Show blacklist entries via debugfs Masami Hiramatsu
2014-04-24 11:01   ` [tip:perf/kprobes] " tip-bot for Masami Hiramatsu
2014-04-17  8:18 ` [PATCH -tip v9 20/26] kprobes: Support blacklist functions in module Masami Hiramatsu
2014-04-24  8:56   ` Ingo Molnar
2014-04-24 11:24     ` Masami Hiramatsu
2014-04-25  8:19       ` Ingo Molnar
2014-04-25 10:12         ` Masami Hiramatsu
2014-04-25 10:55           ` Masami Hiramatsu
2014-04-17  8:19 ` [PATCH -tip v9 21/26] kprobes: Use NOKPROBE_SYMBOL() in sample modules Masami Hiramatsu
2014-04-17  8:19 ` [PATCH -tip v9 22/26] kprobes/x86: Use kprobe_blacklist for .kprobes.text and .entry.text Masami Hiramatsu
2014-04-24  8:58   ` Ingo Molnar
2014-04-24 11:22     ` Masami Hiramatsu
2014-04-17  8:19 ` [PATCH -tip v9 23/26] kprobes/x86: Remove unneeded preempt_disable/enable in interrupt handlers Masami Hiramatsu
2014-04-17  8:19 ` [PATCH -tip v9 24/26] kprobes: Enlarge hash table to 512 entries Masami Hiramatsu
2014-04-17  8:19 ` [PATCH -tip v9 25/26] kprobes: Introduce kprobe cache to reduce cache misshits Masami Hiramatsu
2014-04-24  9:01   ` Ingo Molnar
2014-04-24 11:38     ` Masami Hiramatsu
2014-04-25  8:20       ` Ingo Molnar
2014-04-25  9:43         ` Masami Hiramatsu
2014-04-26  7:12           ` Ingo Molnar
2014-04-27 12:49             ` Masami Hiramatsu
2014-04-17  8:19 ` [PATCH -tip v9 26/26] ftrace: Introduce FTRACE_OPS_FL_SELF_FILTER for ftrace-kprobe Masami Hiramatsu
2014-04-17  8:37 ` [PATCH -tip v9 00/26] kprobes: introduce NOKPROBE_SYMBOL, bugfixes and scalbility efforts Ingo Molnar
2014-04-17  8:53   ` Masami Hiramatsu

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=538786D8.1070303@in.ibm.com \
    --to=suzuki@in.ibm.com \
    --cc=akataria@vmware.com \
    --cc=akpm@linux-foundation.org \
    --cc=anil.s.keshavamurthy@intel.com \
    --cc=arnd@arndb.de \
    --cc=benh@kernel.crashing.org \
    --cc=chrisw@sous-sol.org \
    --cc=davem@davemloft.net \
    --cc=dl9pf@gmx.de \
    --cc=fenghua.yu@intel.com \
    --cc=haokexin@gmail.com \
    --cc=hpa@zytor.com \
    --cc=jeremy@goop.org \
    --cc=linux-ia64@vger.kernel.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=linux-tip-commits@vger.kernel.org \
    --cc=linuxppc-dev@lists.ozlabs.org \
    --cc=masami.hiramatsu.pt@hitachi.com \
    --cc=mingo@kernel.org \
    --cc=paulus@samba.org \
    --cc=rdunlap@infradead.org \
    --cc=rusty@rustcorp.com.au \
    --cc=sparse@chrisli.org \
    --cc=tglx@linutronix.de \
    --cc=tony.luck@gmail.com \
    --cc=tony.luck@intel.com \
    --cc=torvalds@linux-foundation.org \
    --cc=yrl.pp-manager.tt@hitachi.com \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link

LKML Archive on lore.kernel.org

Archives are clonable:
	git clone --mirror https://lore.kernel.org/lkml/0 lkml/git/0.git
	git clone --mirror https://lore.kernel.org/lkml/1 lkml/git/1.git
	git clone --mirror https://lore.kernel.org/lkml/2 lkml/git/2.git
	git clone --mirror https://lore.kernel.org/lkml/3 lkml/git/3.git
	git clone --mirror https://lore.kernel.org/lkml/4 lkml/git/4.git
	git clone --mirror https://lore.kernel.org/lkml/5 lkml/git/5.git
	git clone --mirror https://lore.kernel.org/lkml/6 lkml/git/6.git
	git clone --mirror https://lore.kernel.org/lkml/7 lkml/git/7.git
	git clone --mirror https://lore.kernel.org/lkml/8 lkml/git/8.git
	git clone --mirror https://lore.kernel.org/lkml/9 lkml/git/9.git

	# If you have public-inbox 1.1+ installed, you may
	# initialize and index your mirror using the following commands:
	public-inbox-init -V2 lkml lkml/ https://lore.kernel.org/lkml \
		linux-kernel@vger.kernel.org
	public-inbox-index lkml

Example config snippet for mirrors

Newsgroup available over NNTP:
	nntp://nntp.lore.kernel.org/org.kernel.vger.linux-kernel


AGPL code for this site: git clone https://public-inbox.org/public-inbox.git