Re: [PATCH v7] Add udmabuf misc device

2018-09-10 Thread Gert Wollny
Using the kernel 4.19.0-rc2 it works now, so With the fix for not calling fput when memfd == NULL the patch is Reviewed-By: Gert Wollny best, Gert Am Montag, den 10.09.2018, 15:30 +0200 schrieb Gerd Hoffmann: > On Mon, Sep 10, 2018 at 01:31:08PM +0200, Gert Wollny wrote: > > Am Mo

Re: [PATCH v7] Add udmabuf misc device

2018-09-10 Thread Gert Wollny
Using the kernel 4.19.0-rc2 it works now, so With the fix for not calling fput when memfd == NULL the patch is Reviewed-By: Gert Wollny best, Gert Am Montag, den 10.09.2018, 15:30 +0200 schrieb Gerd Hoffmann: > On Mon, Sep 10, 2018 at 01:31:08PM +0200, Gert Wollny wrote: > > Am Mo

Re: [PATCH v7] Add udmabuf misc device

2018-09-10 Thread Gert Wollny
Am Montag, den 10.09.2018, 15:30 +0200 schrieb Gerd Hoffmann: > On Mon, Sep 10, 2018 at 01:31:08PM +0200, Gert Wollny wrote: > > Am Montag, den 10.09.2018, 12:53 +0200 schrieb Gerd Hoffmann: > > > > > > By default qemu doesn't use memfd for backing storage, you hav

Re: [PATCH v7] Add udmabuf misc device

2018-09-10 Thread Gert Wollny
Am Montag, den 10.09.2018, 15:30 +0200 schrieb Gerd Hoffmann: > On Mon, Sep 10, 2018 at 01:31:08PM +0200, Gert Wollny wrote: > > Am Montag, den 10.09.2018, 12:53 +0200 schrieb Gerd Hoffmann: > > > > > > By default qemu doesn't use memfd for backing storage, you hav

Re: [PATCH v7] Add udmabuf misc device

2018-09-10 Thread Gert Wollny
Am Montag, den 10.09.2018, 15:30 +0200 schrieb Gerd Hoffmann: > On Mon, Sep 10, 2018 at 01:31:08PM +0200, Gert Wollny wrote: > > Am Montag, den 10.09.2018, 12:53 +0200 schrieb Gerd Hoffmann: > > > > > > By default qemu doesn't use memfd for backing storage, you hav

Re: [PATCH v7] Add udmabuf misc device

2018-09-10 Thread Gert Wollny
Am Montag, den 10.09.2018, 15:30 +0200 schrieb Gerd Hoffmann: > On Mon, Sep 10, 2018 at 01:31:08PM +0200, Gert Wollny wrote: > > Am Montag, den 10.09.2018, 12:53 +0200 schrieb Gerd Hoffmann: > > > > > > By default qemu doesn't use memfd for backing storage, you hav

Re: [PATCH v7] Add udmabuf misc device

2018-09-10 Thread Gert Wollny
Am Montag, den 10.09.2018, 12:53 +0200 schrieb Gerd Hoffmann: > > By default qemu doesn't use memfd for backing storage, you have to > explicitly configure qemu that way (see qemu commit log of the test > branch): > > qemu-system-x86_64 -m 2G > -object

Re: [PATCH v7] Add udmabuf misc device

2018-09-10 Thread Gert Wollny
Am Montag, den 10.09.2018, 12:53 +0200 schrieb Gerd Hoffmann: > > By default qemu doesn't use memfd for backing storage, you have to > explicitly configure qemu that way (see qemu commit log of the test > branch): > > qemu-system-x86_64 -m 2G > -object

Re: [PATCH v7] Add udmabuf misc device

2018-09-10 Thread Gert Wollny
Am Montag, den 10.09.2018, 10:37 +0200 schrieb Gerd Hoffmann: ... > > The other question is of course, why did dma_buf_export fail for me > > ... > > What exactly did you try? I ran qemu-system-x86_64 -enable-kvm -smp 5 -M q35 -m 8G \ -drive format=raw,file=ubuntu.raw,if=virtio \

Re: [PATCH v7] Add udmabuf misc device

2018-09-10 Thread Gert Wollny
Am Montag, den 10.09.2018, 10:37 +0200 schrieb Gerd Hoffmann: ... > > The other question is of course, why did dma_buf_export fail for me > > ... > > What exactly did you try? I ran qemu-system-x86_64 -enable-kvm -smp 5 -M q35 -m 8G \ -drive format=raw,file=ubuntu.raw,if=virtio \

Re: [PATCH v7] Add udmabuf misc device

2018-09-09 Thread Gert Wollny
I am by no means a kernel expert, but Tomeu asked whether I could review this. Generally the patch looks okay, it applied (on top of 4.18.5-gentoo), and compiled without problems. However, running the experimental qemu branch I get a kernel bug: BUG: unable to handle kernel NULL pointer

Re: [PATCH v7] Add udmabuf misc device

2018-09-09 Thread Gert Wollny
I am by no means a kernel expert, but Tomeu asked whether I could review this. Generally the patch looks okay, it applied (on top of 4.18.5-gentoo), and compiled without problems. However, running the experimental qemu branch I get a kernel bug: BUG: unable to handle kernel NULL pointer

BUG() hit in ioremap.c(i386) with non-standart kernel modules

2001-02-08 Thread Gert Wollny
Hello, I've hit a Kernel BUG with the combination of nonstandart kernel modules. So dear linux-kernel readers, this bug report may or may not apply to the standart kernel. But if you have any comments, please CC me. We use the dolphinics psb66 clustering card and a GForce 256 graphics card.

BUG() hit in ioremap.c(i386) with non-standart kernel modules

2001-02-08 Thread Gert Wollny
Hello, I've hit a Kernel BUG with the combination of nonstandart kernel modules. So dear linux-kernel readers, this bug report may or may not apply to the standart kernel. But if you have any comments, please CC me. We use the dolphinics psb66 clustering card and a GForce 256 graphics card.

Re: Parport/IMM/Zip LOCKUP Oops Revisited [patch included]

2000-11-16 Thread Gert Wollny
ert >From - Thu Nov 16 12:10:09 2000 >From wollny Thu Nov 16 11:32:26 2000 Received: from mout1.freenet.de ([EMAIL PROTECTED] [194.97.50.132]) by topaz.cns.mpg.de (8.9.3/8.9.3/Debian/GNU) with ESMTP id LAA31905 for <[EMAIL PROTECTED]>; Thu, 16 Nov 2000 11:32:26 +0100 Receive

Re: Parport/IMM/Zip LOCKUP Oops Revisited [patch included]

2000-11-16 Thread Gert Wollny
From - Thu Nov 16 12:10:09 2000 From wollny Thu Nov 16 11:32:26 2000 Received: from mout1.freenet.de ([EMAIL PROTECTED] [194.97.50.132]) by topaz.cns.mpg.de (8.9.3/8.9.3/Debian/GNU) with ESMTP id LAA31905 for [EMAIL PROTECTED]; Thu, 16 Nov 2000 11:32:26 +0100 Received: from [194

Re: BUG Report 2.4.0-test11-pre3: NMI Watchdoch detected LOCKUP atCPU[01]

2000-11-15 Thread Gert Wollny
Hello, i think it got it nailed, please try the attached patch (it is against 11-pre4, but it should work against all test11). Explanation: with test7-pre6 in the imm-module the new scsi - code was enabled (see imm.h). This causes the locking of the io_request_lock in scsi_register_host

Re: Parport/IMM/Zip Oops Revisited -- Winbond

2000-11-15 Thread Gert Wollny
James M wrote: > > Dunno what time it is over there Just add seven hours to your time. > but could you give this a try when you get a chance? yeah, and the other thing i will do, is to go through the test7-pre series, to see where the bug came to light. - To unsubscribe from this list: send

Re: Parport/IMM/Zip Oops Revisited -- Winbond

2000-11-15 Thread Gert Wollny
James M wrote: Dunno what time it is over there Just add seven hours to your time. but could you give this a try when you get a chance? yeah, and the other thing i will do, is to go through the test7-pre series, to see where the bug came to light. - To unsubscribe from this list: send the

Re: BUG Report 2.4.0-test11-pre3: NMI Watchdoch detected LOCKUP atCPU[01]

2000-11-15 Thread Gert Wollny
Hello, i think it got it nailed, please try the attached patch (it is against 11-pre4, but it should work against all test11). Explanation: with test7-pre6 in the imm-module the new scsi - code was enabled (see imm.h). This causes the locking of the io_request_lock in scsi_register_host

Re: Parport/IMM/Zip Oops Revisited -- Filesys problem? Viro pleaselook

2000-11-14 Thread Gert Wollny
On Tue, 14 Nov 2000, James M wrote: >Was just trying to find out why I can mount in 11pre1 and 11pre2 when > Gert can't mount at all, so I removed my VFAT factory formatted zipdisk > and put in an Ext2 formatted one.**BOOM** Actually i never tried to mount in my testings, just did

BUG Report 2.4.0-test11-pre3: NMI Watchdoch detected LOCKUP atCPU[01] (fwd)

2000-11-13 Thread Gert Wollny
A bug i had with kernel version 2.4.0-test9 is still there, but there are additional information: When parport_pc is compiled as module, and not already loaded "modprobe imm" yields the LOCKUP message (subject). The iomega-drive is usable after the modprobe and despite of the lockup. If

BUG Report 2.4.0-test11-pre3: NMI Watchdoch detected LOCKUP atCPU[01] (fwd)

2000-11-13 Thread Gert Wollny
A bug i had with kernel version 2.4.0-test9 is still there, but there are additional information: When parport_pc is compiled as module, and not already loaded "modprobe imm" yields the LOCKUP message (subject). The iomega-drive is usable after the modprobe and despite of the lockup. If

2.4.0-test11-pre3: Compile error in drivers/usb/usb.c

2000-11-12 Thread Gert Wollny
compiling usb as module i get: drivers/usb/usb.c 723: hotplug_path unknown ... bye Gert - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] Please read the FAQ at http://www.tux.org/lkml/

2.4.0-test11-pre3: Compile error in drivers/usb/usb.c

2000-11-12 Thread Gert Wollny
compiling usb as module i get: drivers/usb/usb.c 723: hotplug_path unknown ... bye Gert - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] Please read the FAQ at http://www.tux.org/lkml/

Repeatable with gcc 2.7.2.3 [was BUG Report 2.4.0-test9: NMI Watchdochdetected LOCKUP ...]

2000-10-15 Thread wollny
Hello, I was told that I should see if the bug is repeatable with a vanilla gcc (and not pgcc). /proc/version is now: Linux version 2.4.0-test9-my-fb ([EMAIL PROTECTED]) (gcc version 2.7.2.3) #26 SMP Son Okt 15 18:50:40 CEST 2000 The other information stays the same. bye Gert PS: Pleas

BUG Report 2.4.0-test9: NMI Watchdoch detected LOCKUP at CPU[01]

2000-10-13 Thread wollny
Hello, Here is the bug report When doing "modprobe imm" I get message LOCKUP detected the trace looks like this: 0: ?? (assume spin_lock_irqsave in blk_get_queue but printed EIP seems to be sensless - area with no code according to the map file) 1: ll_rw_blk.c: 874

BUG Report 2.4.0-test9: NMI Watchdoch detected LOCKUP at CPU[01]

2000-10-13 Thread wollny
Hello, Here is the bug report When doing "modprobe imm" I get message LOCKUP detected the trace looks like this: 0: ?? (assume spin_lock_irqsave in blk_get_queue but printed EIP seems to be sensless - area with no code according to the map file) 1: ll_rw_blk.c: 874

Bug in 2.4.0-test8: ramfs + highmem + patch

2000-09-10 Thread wollny
Hello, using ramfs with highmem enabled (and ehough RAM ;) yields a possible :Unable to handle kernel NULL pointer dereference at virtual address :printing eip: :c0166f88 [snip] This is in asm/string.h: 518 called by fs/ramfs/inode.c:68 here page_address used to access the

Bug in 2.4.0-test8: ramfs + highmem + patch

2000-09-10 Thread wollny
Hello, using ramfs with highmem enabled (and ehough RAM ;) yields a possible :Unable to handle kernel NULL pointer dereference at virtual address :printing eip: :c0166f88 [snip] This is in asm/string.h: 518 called by fs/ramfs/inode.c:68 here page_address used to access the