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From: Jens Axboe <[email protected]>
To: John David Anglin <[email protected]>,
	Helge Deller <[email protected]>,
	[email protected], [email protected],
	James Bottomley <[email protected]>
Subject: Re: io_uring failure on parisc with VIPT caches
Date: Wed, 15 Feb 2023 19:50:34 -0700	[thread overview]
Message-ID: <[email protected]> (raw)
In-Reply-To: <[email protected]>

On 2/15/23 7:40 PM, John David Anglin wrote:
> On 2023-02-15 6:02 p.m., Jens Axboe wrote:
>> This is not related to Helge's patch, 6.1-stable is just still missing:
>>
>> commit fcc926bb857949dbfa51a7d95f3f5ebc657f198c
>> Author: Jens Axboe<[email protected]>
>> Date:   Fri Jan 27 09:28:13 2023 -0700
>>
>>      io_uring: add a conditional reschedule to the IOPOLL cancelation loop
>>
>> and I'm guessing you're running without preempt.
> With 6.2.0-rc8+, I had a different crash running poll-race-mshot.t:
> 
> Backtrace:
> 
> 
> Kernel Fault: Code=15 (Data TLB miss fault) at addr 0000000000000000
> CPU: 0 PID: 18265 Comm: poll-race-mshot Not tainted 6.2.0-rc8+ #1
> Hardware name: 9000/800/rp3440
> 
>      YZrvWESTHLNXBCVMcbcbcbcbOGFRQPDI
> PSW: 00010000001001001001000111110000 Not tainted
> r00-03  00000000102491f0 ffffffffffffffff 000000004020307c ffffffffffffffff
> r04-07  ffffffffffffffff ffffffffffffffff ffffffffffffffff ffffffffffffffff
> r08-11  ffffffffffffffff 000000000407ef28 000000000407f838 8400000000800000
> r12-15  0000000000000000 0000000040c424e0 0000000040c424e0 0000000040c424e0
> r16-19  000000000407fd68 0000000063f08648 0000000040c424e0 000000000a085000
> r20-23  00000000000d6b44 000000002faf0800 00000000000000ff 0000000000000002
> r24-27  000000000407fa30 000000000407fd68 0000000000000000 0000000040c1e4e0
> r28-31  400000000000de84 0000000000000000 0000000000000000 0000000000000002
> sr00-03  0000000004081000 0000000000000000 0000000000000000 0000000004081de0
> sr04-07  0000000004081000 0000000000000000 0000000000000000 00000000040815a8
> 
> IASQ: 0000000004081000 0000000000000000 IAOQ: 0000000000000000 0000000004081590
>  IIR: 00000000    ISR: 0000000000000000  IOR: 0000000000000000
>  CPU:        0   CR30: 000000004daf5700 CR31: ffffffffffffefff
>  ORIG_R28: 0000000000000000
>  IAOQ[0]: 0x0
>  IAOQ[1]: linear_quiesce+0x0/0x18 [linear]
>  RP(r2): intr_check_sig+0x0/0x3c
> Backtrace:
> 
> Kernel panic - not syncing: Kernel Fault

This means very little to me, is it a NULL pointer deref? And where's
the backtrace?

-- 
Jens Axboe



  reply	other threads:[~2023-02-16  2:50 UTC|newest]

Thread overview: 48+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-02-12  9:47 io_uring failure on parisc (32-bit userspace and 64-bit kernel) Helge Deller
2023-02-12 13:16 ` Jens Axboe
2023-02-12 13:28   ` Helge Deller
2023-02-12 13:35     ` Jens Axboe
2023-02-12 14:00       ` Jens Axboe
2023-02-12 14:03       ` Helge Deller
2023-02-12 19:35         ` Helge Deller
2023-02-12 19:42           ` Jens Axboe
2023-02-12 20:01             ` Helge Deller
2023-02-12 21:48               ` Jens Axboe
2023-02-12 22:20                 ` Helge Deller
2023-02-12 22:31                   ` Helge Deller
2023-02-13 16:15                     ` Jens Axboe
2023-02-13 20:59                       ` Helge Deller
2023-02-13 21:05                         ` Jens Axboe
2023-02-13 22:05                           ` Helge Deller
2023-02-13 22:50                             ` John David Anglin
2023-02-14 23:09                               ` io_uring failure on parisc with VIPT caches Helge Deller
2023-02-14 23:29                                 ` Jens Axboe
2023-02-15  2:12                                   ` John David Anglin
2023-02-15 15:16                                     ` Jens Axboe
2023-02-15 15:52                                       ` Helge Deller
2023-02-15 15:56                                         ` Jens Axboe
2023-02-15 16:02                                           ` Helge Deller
2023-02-15 16:04                                             ` Jens Axboe
2023-02-15 21:40                                               ` Helge Deller
2023-02-15 23:04                                                 ` Jens Axboe
2023-02-15 16:38                                           ` John David Anglin
2023-02-15 17:01                                             ` Jens Axboe
2023-02-15 19:00                                               ` Jens Axboe
2023-02-15 19:16                                                 ` Jens Axboe
2023-02-15 20:27                                                   ` John David Anglin
2023-02-15 20:37                                                     ` Jens Axboe
2023-02-15 21:06                                                       ` John David Anglin
2023-02-15 21:38                                                         ` Jens Axboe
2023-02-15 21:39                                                         ` John David Anglin
2023-02-15 22:10                                                           ` John David Anglin
2023-02-15 23:02                                                             ` Jens Axboe
2023-02-15 23:43                                                               ` John David Anglin
2023-02-16  2:40                                                               ` John David Anglin
2023-02-16  2:50                                                                 ` Jens Axboe [this message]
2023-02-16  8:24                                                                   ` Helge Deller
2023-02-16 15:22                                                                     ` Jens Axboe
2023-02-16 20:35                                                                     ` John David Anglin
2023-02-15 23:03                                                           ` Jens Axboe
2023-02-15 19:20                                                 ` John David Anglin
2023-02-15 19:24                                                   ` Jens Axboe
2023-02-15 16:18                                         ` John David Anglin

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