From: matoro <matoro_mailinglist_kernel@matoro.tk>
To: John David Anglin <dave.anglin@bell.net>
Cc: Vidra.Jonas@seznam.cz, linux-parisc@vger.kernel.org,
John David Anglin <dave@parisc-linux.org>,
Helge Deller <deller@gmx.de>
Subject: Re: [PATCH] parisc: Try to fix random segmentation faults in package builds
Date: Mon, 10 Jun 2024 15:52:52 -0400 [thread overview]
Message-ID: <13894865a496a7f2a6ed607e2ef708c4@matoro.tk> (raw)
In-Reply-To: <213f7afe-5bc8-40ff-835c-1fadaae0a96d@bell.net>
On 2024-06-04 13:08, John David Anglin wrote:
> On 2024-06-04 11:07 a.m., matoro wrote:
>>> Thanks a ton Dave, I've applied this on top of 6.9.2 and also think I'm
>>> seeing improvement! No panics yet, I have a couple week's worth of
>>> package testing to catch up on so I'll report if I see anything!
>>
>> I've seen a few warnings in my dmesg while testing, although I didn't see
>> any immediately corresponding failures. Any danger?
> We have determined most of the warnings arise from pages that have been
> swapped out. Mostly, it seems these
> pages have been flushed to memory before the pte is changed to a swap pte.
> There might be issues for pages that
> have been cleared. It is possible the random faults aren't related to the
> warning I added for pages with an invalid pfn
> in flush_cache_page_if_present. The only thing I know for certain is there
> is no way to flush these pages on parisc
> other than flushing the whole cache.
>
> My c8000 has run almost two weeks without any random faults. On the other
> hand, Helge has two machines that
> frequently fault and generate these warnings.
>
> Flushing the whole cache in flush_cache_mm and flush_cache_range might
> eliminate the random faults but
> there will be a significant performance hit.
>
> Dave
Unfortunately I had a few of these faults trip today after ~4 days of uptime
with corresponding random segfaults. One of the WARNs was emitted shortly
before, though not for the same PID. Reattempted the build twice and
randomly segfaulted all 3 times. Had to reboot as usual to get it out of the
bad state.
[Mon Jun 10 14:26:20 2024] ------------[ cut here ]------------
[Mon Jun 10 14:26:20 2024] WARNING: CPU: 1 PID: 26453 at
arch/parisc/kernel/cache.c:624 flush_cache_page_if_present+0x1a4/0x330
[Mon Jun 10 14:26:20 2024] Modules linked in: nfnetlink af_packet overlay
loop nfsv4 dns_resolver nfs lockd grace sunrpc netfs autofs4 binfmt_m
isc sr_mod ohci_pci cdrom ehci_pci ohci_hcd ehci_hcd tg3 usbcore pata_cmd64x
ipmi_si hwmon usb_common ipmi_devintf libata libphy nls_base ipmi_
msghandler
[Mon Jun 10 14:26:20 2024] CPU: 1 PID: 26453 Comm: ld.so.1 Tainted: G
W 6.9.3-gentoo-parisc64 #1
[Mon Jun 10 14:26:20 2024] Hardware name: 9000/800/rp3440
[Mon Jun 10 14:26:20 2024] YZrvWESTHLNXBCVMcbcbcbcbOGFRQPDI
[Mon Jun 10 14:26:20 2024] PSW: 00001000000001001111100100001111 Tainted: G
W
[Mon Jun 10 14:26:20 2024] r00-03 000000ff0804f90f 000000004106b280
00000000402090bc 000000007f4c85f0
[Mon Jun 10 14:26:20 2024] r04-07 0000000040f99a80 00000000f855d000
00000000561b6360 000000000800000f
[Mon Jun 10 14:26:20 2024] r08-11 0000000c009674de 0000000000000000
0000004100b2e39c 000000007f4c81c0
[Mon Jun 10 14:26:20 2024] r12-15 00000000561b6360 0000004100b2e330
0000000000000002 0000000000000000
[Mon Jun 10 14:26:20 2024] r16-19 0000000040f50360 fffffffffffffff4
000000007f4c8108 0000000000000003
[Mon Jun 10 14:26:20 2024] r20-23 0000000000001a46 0000000011b81000
ffffffffc0000000 00000000f859d000
[Mon Jun 10 14:26:20 2024] r24-27 0000000000000000 000000000800000f
0000004100b2e3a0 0000000040f99a80
[Mon Jun 10 14:26:20 2024] r28-31 0000000000000000 000000007f4c8670
000000007f4c86a0 0000000000000000
[Mon Jun 10 14:26:20 2024] sr00-03 000000000604d000 000000000604d000
0000000000000000 000000000604d000
[Mon Jun 10 14:26:20 2024] sr04-07 0000000000000000 0000000000000000
0000000000000000 0000000000000000
[Mon Jun 10 14:26:20 2024] IASQ: 0000000000000000 0000000000000000 IAOQ:
0000000040209104 0000000040209108
[Mon Jun 10 14:26:20 2024] IIR: 03ffe01f ISR: 0000000000000000 IOR:
0000000000000000
[Mon Jun 10 14:26:20 2024] CPU: 1 CR30: 00000001e700e780 CR31:
fffffff0f0e05ee0
[Mon Jun 10 14:26:20 2024] ORIG_R28: 00000000414cab90
[Mon Jun 10 14:26:20 2024] IAOQ[0]: flush_cache_page_if_present+0x1a4/0x330
[Mon Jun 10 14:26:20 2024] IAOQ[1]: flush_cache_page_if_present+0x1a8/0x330
[Mon Jun 10 14:26:20 2024] RP(r2): flush_cache_page_if_present+0x15c/0x330
[Mon Jun 10 14:26:20 2024] Backtrace:
[Mon Jun 10 14:26:20 2024] [<000000004020b110>]
flush_cache_range+0x138/0x158
[Mon Jun 10 14:26:20 2024] [<00000000405fdfc8>]
change_protection+0x134/0xb78
[Mon Jun 10 14:26:20 2024] [<00000000405feb4c>] mprotect_fixup+0x140/0x478
[Mon Jun 10 14:26:20 2024] [<00000000405ff15c>]
do_mprotect_pkey.constprop.0+0x2d8/0x5f0
[Mon Jun 10 14:26:20 2024] [<00000000405ff4a4>] sys_mprotect+0x30/0x60
[Mon Jun 10 14:26:20 2024] [<0000000040203fbc>] syscall_exit+0x0/0x10
[Mon Jun 10 14:26:20 2024] ---[ end trace 0000000000000000 ]---
[Mon Jun 10 14:28:04 2024] do_page_fault() command='ld.so.1' type=15
address=0x161236a0 in libc.so[f8b9c000+1b6000]
trap #15: Data TLB miss fault, vm_start =
0x4208e000, vm_end = 0x420af000
[Mon Jun 10 14:28:04 2024] CPU: 0 PID: 26681 Comm: ld.so.1 Tainted: G
W 6.9.3-gentoo-parisc64 #1
[Mon Jun 10 14:28:04 2024] Hardware name: 9000/800/rp3440
[Mon Jun 10 14:28:04 2024] YZrvWESTHLNXBCVMcbcbcbcbOGFRQPDI
[Mon Jun 10 14:28:04 2024] PSW: 00000000000001100000000000001111 Tainted: G
W
[Mon Jun 10 14:28:04 2024] r00-03 000000000006000f 00000000f8d584a8
00000000f8c46e33 0000000000000028
[Mon Jun 10 14:28:04 2024] r04-07 00000000f8d54660 00000000f8d54648
0000000000000020 000000000001ab91
[Mon Jun 10 14:28:04 2024] r08-11 00000000f8d54654 00000000f8d5bf78
0000000000000005 00000000f9ad87c8
[Mon Jun 10 14:28:04 2024] r12-15 0000000000000000 0000000000000000
000000000000003f 00000000000003e9
[Mon Jun 10 14:28:04 2024] r16-19 000000000001a000 000000000001a000
000000000001a000 00000000f8d56ca8
[Mon Jun 10 14:28:04 2024] r20-23 0000000000000000 00000000f8c46bcc
000000000001a2d8 00000000ffffffff
[Mon Jun 10 14:28:04 2024] r24-27 0000000000000000 0000000000000020
00000000f8d54648 000000000001a000
[Mon Jun 10 14:28:04 2024] r28-31 0000000000000001 0000000016123698
00000000f9ad8cc0 00000000f9ad8c2c
[Mon Jun 10 14:28:04 2024] sr00-03 0000000006069400 0000000006069400
0000000000000000 0000000006069400
[Mon Jun 10 14:28:04 2024] sr04-07 0000000006069400 0000000006069400
0000000006069400 0000000006069400
[Mon Jun 10 14:28:04 2024] VZOUICununcqcqcqcqcqcrmunTDVZOUI
[Mon Jun 10 14:28:04 2024] FPSR: 00000000000000000000000000000000
[Mon Jun 10 14:28:04 2024] FPER1: 00000000
[Mon Jun 10 14:28:04 2024] fr00-03 0000000000000000 0000000000000000
0000000000000000 0000000000000000
[Mon Jun 10 14:28:04 2024] fr04-07 3fbc58dcd6e825cf 41d98fdb92c00000
00001d29b5e9bfb4 41d999952df718f9
[Mon Jun 10 14:28:04 2024] fr08-11 ffe3d998c543273c ff60537aba025d00
004698b61bd9b9ee 000527c1bed53af7
[Mon Jun 10 14:28:04 2024] fr12-15 0000000000000000 0000000000000000
0000000000000000 0000000000000000
[Mon Jun 10 14:28:04 2024] fr16-19 0000000000000000 0000000000000000
0000000000000000 0000000000000000
[Mon Jun 10 14:28:04 2024] fr20-23 0000000000000000 0000000000000000
0000000000000020 0000000000000000
[Mon Jun 10 14:28:04 2024] fr24-27 0000000000000003 0000000000000000
3d473181aed58d64 bff0000000000000
[Mon Jun 10 14:28:04 2024] fr28-31 3fc999b324f10111 057028cc5c564e70
dbc91a3f6bd13476 02632fb493c76730
[Mon Jun 10 14:28:04 2024] IASQ: 0000000006069400 0000000006069400 IAOQ:
00000000f8c44063 00000000f8c44067
[Mon Jun 10 14:28:04 2024] IIR: 0fb0109c ISR: 0000000006069400 IOR:
00000000161236a0
[Mon Jun 10 14:28:04 2024] CPU: 0 CR30: 00000001e70099e0 CR31:
fffffff0f0e05ee0
[Mon Jun 10 14:28:04 2024] ORIG_R28: 0000000000000000
[Mon Jun 10 14:28:04 2024] IAOQ[0]: 00000000f8c44063
[Mon Jun 10 14:28:04 2024] IAOQ[1]: 00000000f8c44067
[Mon Jun 10 14:28:04 2024] RP(r2): 00000000f8c46e33
next prev parent reply other threads:[~2024-06-10 19:53 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-05-05 16:58 [PATCH] parisc: Try to fix random segmentation faults in package builds John David Anglin
2024-05-08 8:54 ` Vidra.Jonas
2024-05-08 15:23 ` John David Anglin
2024-05-08 19:18 ` matoro
2024-05-08 20:52 ` John David Anglin
2024-05-08 23:51 ` matoro
2024-05-09 1:21 ` John David Anglin
2024-05-09 17:10 ` John David Anglin
2024-05-29 15:54 ` matoro
2024-05-29 16:33 ` John David Anglin
2024-05-30 5:00 ` matoro
2024-06-04 15:07 ` matoro
2024-06-04 17:08 ` John David Anglin
2024-06-10 19:52 ` matoro [this message]
2024-06-10 20:17 ` John David Anglin
2024-06-26 6:12 ` matoro
2024-06-26 15:44 ` John David Anglin
2024-05-12 6:57 ` Vidra.Jonas
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