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Date: Tue, 5 Sep 2023 17:57:23 -0400
From: John David Anglin <dave.anglin@...l.net>
To: Masahiro Yamada <masahiroy@...nel.org>,
linux-parisc@...r.kernel.org, Helge Deller <deller@....de>
Cc: linux-kernel@...r.kernel.org, linux-kbuild@...r.kernel.org,
Nick Desaulniers <ndesaulniers@...gle.com>
Subject: Re: [PATCH] linux/export: fix reference to exported functions for
parisc64
The patch get us slightly further but boot still fails in a similar way:
[...]
Run /init as init process
process '/usr/bin/sh' started with executable stack
Loading, please wait...
Starting systemd-udevd version 254.1-3
e1000 alternatives: applied 0 out of 569 patches
usbcore alternatives: applied 0 out of 17 patches
e1000: Intel(R) PRO/1000 Network Driver
e1000: Copyright (c) 1999-2006 Intel Corporation.
usbcore: registered new interface driver usbfs
usbcore: registered new interface driver hub
scsi_mod alternatives: applied 0 out of 7 patches
usbcore: registered new device driver usb
SCSI subsystem initialized
ehci_hcd alternatives: applied 0 out of 114 patches
mptbase alternatives: applied 0 out of 73 patches
libata alternatives: applied 0 out of 3 patches
ehci_pci alternatives: applied 0 out of 2 patches
Fusion MPT base driver 3.04.20
Copyright (c) 1999-2008 LSI Corporation
ohci_hcd alternatives: applied 0 out of 144 patches
ehci-pci 0000:60:01.2: EHCI Host Controller
ehci-pci 0000:60:01.2: new USB bus registered, assigned bus number 1
Backtrace:
[<000000001071d5d8>] usb_hcd_pci_probe+0x330/0x4a0 [usbcore]
[<000000001025e620>] ehci_pci_probe+0x50/0x70 [ehci_pci]
[<00000000407d4004>] pci_device_probe+0x144/0x2a8
[<000000004091df6c>] really_probe+0x12c/0x5a8
[<000000004091e46c>] __driver_probe_device+0x84/0x1a0
[<000000004091e66c>] driver_probe_device+0xe4/0x2c8
[<000000004091eddc>] __driver_attach_async_helper+0x8c/0x160
[<0000000040284ecc>] async_run_entry_fn+0x64/0x210
[<000000004026b5e0>] process_one_work+0x268/0x478
[<000000004026ba88>] worker_thread+0x298/0x740
[<000000004027c3f4>] kthread+0x274/0x280
[<0000000040202020>] ret_from_kernel_thread+0x20/0x28
Page fault: no context: Code=6 (Instruction TLB miss fault) at addr 0b3a029a8348
CPU: 3 PID: 57 Comm: kworker/u64:4 Not tainted 6.5.0+ #1
Hardware name: 9000/785/C8000
Workqueue: events_unbound async_run_entry_fn
YZrvWESTHLNXBCVMcbcbcbcbOGFRQPDI
PSW: 00001000000001001111111100001111 Not tainted
r00-03 000000ff0804ff0f 0b3a029a83406038 000000001025e770 0000000052008c30
r04-07 000000001025e000 0000000053501000 000000005156a0a0 0000000000000000
r08-11 000000005156a000 0000000053501800 0000000053501120 000000005156a0a0
r12-15 0000000000000002 0000000040d63640 00000000516b7328 0000000000000001
r16-19 0000000050d54580 0000000000000008 0000000050d54540 0000000000010000
r20-23 0000000000001a46 000000000000000f 0002000000000002 0000000000045b38
r24-27 0000000000000000 0000000000000003 0000000000000002 000000001025e000
r28-31 0000000000002395 0000000052008d40 0000000052008ce0 0000000000001033
sr00-03 00000000000cbc00 0000000000000000 0000000000000000 00000000000cbc00
sr04-07 0000000000000000 0000000000000000 0000000000000000 0000000000000000
IASQ: 000000000b3a029a 000000000b3a029a IAOQ: 0b3a029a83406038 0b3a029a8340603c
IIR: 43ffff80 ISR: 0000000000000002 IOR: 0000000052008ea0
CPU: 3 CR30: 0000000051794c20 CR31: ffffffffffffffff
ORIG_R28: 0000000000000000
IAOQ[0]: 0xb3a029a83406038
IAOQ[1]: 0xb3a029a8340603c
RP(r2): ehci_pci_setup+0x100/0x780 [ehci_pci]
Backtrace:
[<000000001071d5d8>] usb_hcd_pci_probe+0x330/0x4a0 [usbcore]
[<000000001025e620>] ehci_pci_probe+0x50/0x70 [ehci_pci]
[<00000000407d4004>] pci_device_probe+0x144/0x2a8
[<000000004091df6c>] really_probe+0x12c/0x5a8
[<000000004091e46c>] __driver_probe_device+0x84/0x1a0
[<000000004091e66c>] driver_probe_device+0xe4/0x2c8
[<000000004091eddc>] __driver_attach_async_helper+0x8c/0x160
[<0000000040284ecc>] async_run_entry_fn+0x64/0x210
[<000000004026b5e0>] process_one_work+0x268/0x478
[<000000004026ba88>] worker_thread+0x298/0x740
[<000000004027c3f4>] kthread+0x274/0x280
[<0000000040202020>] ret_from_kernel_thread+0x20/0x28
Kernel panic - not syncing: Page fault: no context
This was with master. I'll check ddb5cdbafaaa.
Dave
On 2023-09-05 3:08 p.m., Masahiro Yamada wrote:
> John David Anglin reported parisc has been broken since commit
> ddb5cdbafaaa ("kbuild: generate KSYMTAB entries by modpost").
>
> I checked the assembler output, and noticed function references are
> prefixed with P%, so the situation in parisc64 is similar to ia64.
>
> Fixes: ddb5cdbafaaa ("kbuild: generate KSYMTAB entries by modpost")
> Reported-by: John David Anglin <dave.anglin@...l.net>
> Closes: https://lore.kernel.org/linux-parisc/1901598a-e11d-f7dd-a5d9-9a69d06e6b6e@bell.net/T/#u
> Signed-off-by: Masahiro Yamada <masahiroy@...nel.org>
> ---
>
> I just checked the assembler output, and I created this patch
> based on my best guess. Only compile-tested.
> I hope somebody will run-test this patch.
>
>
> include/linux/export-internal.h | 2 ++
> 1 file changed, 2 insertions(+)
>
> diff --git a/include/linux/export-internal.h b/include/linux/export-internal.h
> index 1c849db953a5..45fca09b2319 100644
> --- a/include/linux/export-internal.h
> +++ b/include/linux/export-internal.h
> @@ -52,6 +52,8 @@
>
> #ifdef CONFIG_IA64
> #define KSYM_FUNC(name) @fptr(name)
> +#elif defined(CONFIG_PARISC) && defined(CONFIG_64BIT)
> +#define KSYM_FUNC(name) P%name
> #else
> #define KSYM_FUNC(name) name
> #endif
--
John David Anglin dave.anglin@...l.net
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