From: Peter Zijlstra <peterz@infradead.org>
To: Guenter Roeck <linux@roeck-us.net>
Cc: Joel Fernandes <joel@joelfernandes.org>,
paulmck@kernel.org, Pavel Machek <pavel@denx.de>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
stable@vger.kernel.org, patches@lists.linux.dev,
linux-kernel@vger.kernel.org, torvalds@linux-foundation.org,
akpm@linux-foundation.org, shuah@kernel.org,
patches@kernelci.org, lkft-triage@lists.linaro.org,
jonathanh@nvidia.com, f.fainelli@gmail.com,
sudipm.mukherjee@gmail.com, srw@sladewatkins.net, rwarsow@gmx.de,
conor@kernel.org, rcu@vger.kernel.org,
Ingo Molnar <mingo@kernel.org>
Subject: Re: scheduler problems in -next (was: Re: [PATCH 6.4 000/227] 6.4.7-rc1 review)
Date: Mon, 31 Jul 2023 16:47:33 +0200 [thread overview]
Message-ID: <20230731144733.GL29590@hirez.programming.kicks-ass.net> (raw)
In-Reply-To: <fdaaee62-b67e-556c-2675-aacd3ec994f6@roeck-us.net>
[-- Attachment #1: Type: text/plain, Size: 5875 bytes --]
On Mon, Jul 31, 2023 at 07:35:13AM -0700, Guenter Roeck wrote:
> > Hurmph, let me see if I can reproduce on next-20230731 (not having the
> > older next thingies around).
>
> That crashes hard with my configuration.
>
> [ 6.353191] kernel tried to execute NX-protected page - exploit attempt? (uid: 0)
> [ 6.353392] BUG: unable to handle page fault for address: ffff9b10c0013cd0
> [ 6.353531] #PF: supervisor instruction fetch in kernel mode
> [ 6.353624] #PF: error_code(0x0011) - permissions violation
> [ 6.353751] PGD 1000067 P4D 1000067 PUD 1205067 PMD 1206067 PTE 800000000124e063
> [ 6.354011] Oops: 0011 [#1] PREEMPT SMP PTI
> [ 6.354164] CPU: 0 PID: 182 Comm: kunit_try_catch Tainted: G N 6.5.0-rc4-next-20230731 #1
> [ 6.354315] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.16.2-0-gea1b7a073390-prebuilt.qemu.org 04/01/2014
> [ 6.354525] RIP: 0010:0xffff9b10c0013cd0
> [ 6.354793] Code: ff ff 60 64 ce a9 ff ff ff ff 00 00 00 00 00 00 00 00 d1 3a bc a8 ff ff ff ff 00 02 00 00 00 00 00 00 00 00 00 00 00 00 00 00 <f0> 00 01 44 10 8a ff ff b8 01 01 44 10 8a ff ff 00 00 00 00 00 00
> [ 6.355059] RSP: 0000:ffff9b10c027fd60 EFLAGS: 00000246
> [ 6.355157] RAX: ffff9b10c0013cd0 RBX: ffff8a1043bdb400 RCX: 0000000000000000
> [ 6.355259] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff8a1043bdb400
> [ 6.355358] RBP: ffff9b10c027fdc8 R08: 0000000000000001 R09: 0000000000000001
> [ 6.355456] R10: 0000000000000001 R11: 0000000000000001 R12: ffff9b10c027fe74
> [ 6.355556] R13: ffff8a10440100f0 R14: ffff8a10440101b8 R15: ffff9b10c027fe74
> [ 6.355679] FS: 0000000000000000(0000) GS:ffff8a104fc00000(0000) knlGS:0000000000000000
> [ 6.355798] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
> [ 6.355886] CR2: ffff9b10c0013cd0 CR3: 000000000e048000 CR4: 00000000003506f0
> [ 6.356029] Call Trace:
> [ 6.356158] <TASK>
> [ 6.356334] ? __die+0x1f/0x70
> [ 6.356472] ? page_fault_oops+0x14a/0x460
> [ 6.356547] ? exc_page_fault+0xee/0x1c0
> [ 6.356612] ? asm_exc_page_fault+0x26/0x30
> [ 6.356703] ? kunit_filter_attr_tests+0xc4/0x2e0
> [ 6.356796] kunit_filter_suites+0x2e2/0x460
> [ 6.356889] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10
> [ 6.356979] filter_suites_test+0xea/0x2c0
> [ 6.357051] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10
> [ 6.357148] kunit_generic_run_threadfn_adapter+0x15/0x20
> [ 6.357228] kthread+0xef/0x120
> [ 6.357282] ? __pfx_kthread+0x10/0x10
> [ 6.357343] ret_from_fork+0x2f/0x50
> [ 6.357399] ? __pfx_kthread+0x10/0x10
> [ 6.357458] ret_from_fork_asm+0x1b/0x30
> [ 6.357560] </TASK>
> [ 6.357632] Modules linked in:
> [ 6.357786] CR2: ffff9b10c0013cd0
> [ 6.358010] ---[ end trace 0000000000000000 ]---
I get:
[ 2.423691] ------------[ cut here ]------------
[ 2.424994] WARNING: CPU: 0 PID: 184 at mm/slab_common.c:992 free_large_kmalloc+0x4f/0x80
[ 2.426183] Modules linked in:
[ 2.426624] CPU: 0 PID: 184 Comm: kunit_try_catch Tainted: G N 6.5.0-rc4-next-20230731 #1
[ 2.427964] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.0-debian-1.16.0-5 04/01/2014
[ 2.429265] RIP: 0010:free_large_kmalloc+0x4f/0x80
[ 2.429952] Code: f7 da 48 63 d2 48 8b 03 be 06 00 00 00 48 c1 e8 3a 48 8b 3c c5 60 ba 11 ab e8 0d 52 ff ff 89 ee 48 89 df 5b 5d e9 41 df 03 00 <0f> 0b 80 3d 49 43 e9 01 00 75
[ 2.432511] RSP: 0000:ffffadcb0024bdb8 EFLAGS: 00010246
[ 2.433259] RAX: 0100000000001000 RBX: ffffd16bc018aa40 RCX: ffffadcb0024bd7c
[ 2.434262] RDX: ffffd16bc018aa48 RSI: ffffffffa96a9ec7 RDI: ffffd16bc018aa40
[ 2.435265] RBP: ffffadcb0024be60 R08: 0000000000000001 R09: 0000000000000001
[ 2.436269] R10: 0000000000000001 R11: 0000000000000000 R12: ffff8a7084014410
[ 2.437267] R13: ffff8a70840c4000 R14: 0000000000000002 R15: ffff8a70840564a8
[ 2.438271] FS: 0000000000000000(0000) GS:ffff8a708f800000(0000) knlGS:0000000000000000
[ 2.439403] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2.440215] CR2: ffff8a7089401000 CR3: 0000000007a48001 CR4: 0000000000170ef0
[ 2.441218] Call Trace:
[ 2.441568] <TASK>
[ 2.441883] ? free_large_kmalloc+0x4f/0x80
[ 2.442491] ? __warn+0x80/0x170
[ 2.442988] ? free_large_kmalloc+0x4f/0x80
[ 2.443591] ? report_bug+0x171/0x1a0
[ 2.444145] ? handle_bug+0x3c/0x70
[ 2.444662] ? exc_invalid_op+0x17/0x70
[ 2.445225] ? asm_exc_invalid_op+0x1a/0x20
[ 2.445844] ? kunit_add_action+0xc7/0x140
[ 2.446455] ? free_large_kmalloc+0x4f/0x80
[ 2.447054] kunit_filter_suites+0x468/0x480
[ 2.447662] ? kunit_add_action+0xc7/0x140
[ 2.448258] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10
[ 2.449105] filter_suites_test+0xea/0x2c0
[ 2.449702] kunit_generic_run_threadfn_adapter+0x15/0x20
[ 2.450469] kthread+0xf0/0x120
[ 2.450940] ? __pfx_kthread+0x10/0x10
[ 2.451481] ret_from_fork+0x2f/0x50
[ 2.452012] ? __pfx_kthread+0x10/0x10
[ 2.452557] ret_from_fork_asm+0x1b/0x30
[ 2.453146] </TASK>
[ 2.453474] irq event stamp: 677
[ 2.453943] hardirqs last enabled at (689): [<ffffffffa911c24a>] console_unlock+0x10a/0x160
[ 2.455151] hardirqs last disabled at (700): [<ffffffffa911c22f>] console_unlock+0xef/0x160
[ 2.456329] softirqs last enabled at (662): [<ffffffffa909179a>] irq_exit_rcu+0x7a/0xa0
[ 2.457474] softirqs last disabled at (657): [<ffffffffa909179a>] irq_exit_rcu+0x7a/0xa0
[ 2.458610] ---[ end trace 0000000000000000 ]---
But then it continues and eventually reaches:
Linux version 6.5.0-rc4-next-20230731 (root@ivb-ep) (gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40) #1 SMP PREEMPT_DYNAMIC Mon Jul 31 15:39:05 CEST 2023
Network interface test passed
Boot successful.
/ #
Full log attached.
[-- Attachment #2: log.gz --]
[-- Type: application/gzip, Size: 24733 bytes --]
next prev parent reply other threads:[~2023-07-31 14:48 UTC|newest]
Thread overview: 42+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20230725104514.821564989@linuxfoundation.org>
2023-07-27 3:58 ` [PATCH 6.4 000/227] 6.4.7-rc1 review Joel Fernandes
2023-07-27 11:35 ` Pavel Machek
2023-07-27 13:26 ` Joel Fernandes
2023-07-27 14:06 ` Paul E. McKenney
2023-07-27 14:39 ` Guenter Roeck
2023-07-27 16:07 ` Paul E. McKenney
2023-07-27 17:39 ` Guenter Roeck
2023-07-27 20:33 ` Paul E. McKenney
2023-07-27 23:18 ` Joel Fernandes
[not found] ` <99B56FC7-9474-4968-B1DD-5862572FD0BA@joelfernandes.org>
2023-07-28 22:58 ` Paul E. McKenney
2023-07-29 1:25 ` Joel Fernandes
2023-07-29 5:50 ` Paul E. McKenney
2023-07-30 4:00 ` scheduler problems in -next (was: Re: [PATCH 6.4 000/227] 6.4.7-rc1 review) Guenter Roeck
2023-07-31 14:19 ` Peter Zijlstra
2023-07-31 14:35 ` Guenter Roeck
2023-07-31 14:47 ` Peter Zijlstra [this message]
2023-07-31 15:03 ` Guenter Roeck
2023-07-31 14:39 ` Peter Zijlstra
2023-07-31 14:48 ` Guenter Roeck
2023-07-31 14:52 ` Peter Zijlstra
2023-07-31 16:08 ` Roy Hopkins
2023-07-31 16:14 ` Peter Zijlstra
2023-07-31 16:30 ` Roy Hopkins
2023-07-31 16:34 ` Guenter Roeck
2023-07-31 21:15 ` Peter Zijlstra
2023-08-01 17:32 ` Guenter Roeck
2023-08-01 19:08 ` Peter Zijlstra
2023-08-01 21:32 ` Paul E. McKenney
2023-08-01 19:11 ` Paul E. McKenney
2023-08-01 19:14 ` Paul E. McKenney
2023-08-02 13:57 ` Roy Hopkins
2023-08-02 15:05 ` Paul E. McKenney
2023-08-02 15:31 ` Roy Hopkins
2023-08-02 16:51 ` Paul E. McKenney
2023-08-02 15:45 ` Guenter Roeck
2023-08-02 17:20 ` Paul E. McKenney
2023-08-02 17:14 ` Linus Torvalds
2023-08-02 17:48 ` Paul E. McKenney
2023-07-28 4:22 ` [PATCH 6.4 000/227] 6.4.7-rc1 review Guenter Roeck
2023-07-31 3:54 ` Paul E. McKenney
2023-07-31 3:56 ` Paul E. McKenney
2023-07-31 4:16 ` Guenter Roeck
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=20230731144733.GL29590@hirez.programming.kicks-ass.net \
--to=peterz@infradead.org \
--cc=akpm@linux-foundation.org \
--cc=conor@kernel.org \
--cc=f.fainelli@gmail.com \
--cc=gregkh@linuxfoundation.org \
--cc=joel@joelfernandes.org \
--cc=jonathanh@nvidia.com \
--cc=linux-kernel@vger.kernel.org \
--cc=linux@roeck-us.net \
--cc=lkft-triage@lists.linaro.org \
--cc=mingo@kernel.org \
--cc=patches@kernelci.org \
--cc=patches@lists.linux.dev \
--cc=paulmck@kernel.org \
--cc=pavel@denx.de \
--cc=rcu@vger.kernel.org \
--cc=rwarsow@gmx.de \
--cc=shuah@kernel.org \
--cc=srw@sladewatkins.net \
--cc=stable@vger.kernel.org \
--cc=sudipm.mukherjee@gmail.com \
--cc=torvalds@linux-foundation.org \
/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
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox