linux-kernel - Reboot problem with nouveau

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Date:	Thu, 18 Apr 2013 14:14:31 -0400
From:	Marc Dionne <marc.c.dionne@...il.com>
To:	Ben Skeggs <skeggsb@...il.com>, Dave Airlie <airlied@...hat.com>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Reboot problem with nouveau - bisected

My machine has been getting stuck when rebooting during the current
3.9 cycle, and yesterday I took the time to bisect the problem to this
commit:

32256c87ead3edec86bed5023a0ff96a6d907931:  drm/nouveau/fifo/nvc0:
improve interrupt handler somewhat

    Logs extra info for interrupts that have a sub-status register, and
    handles the "special" ack from INTR bit 31.

    Signed-off-by: Ben Skeggs <bskeggs@...hat.com>

The symptom when rebooting is that the console starts spitting out a
continuous stream of identical messages like this (transcribed by
hand):

    nouveau W[   PFIFO][0000:03:00.0] INTR 0x01000000: 0x00000005

The system is then unresponsive until it is reset.  Just commenting
out the corresponding nv_warn() in
drivers/gpu/drm/nouveau/core/engine/fifo/nvc0.c is enough to allow the
system to reboot normally.

Video card in this system is (from lspci -v):

03:00.0 VGA compatible controller: NVIDIA Corporation GF119 [GeForce
GT 520] (rev a1) (prog-if 00 [VGA controller])
    Subsystem: Micro-Star International Co., Ltd. Device 2630
    Flags: bus master, fast devsel, latency 0, IRQ 16
    Memory at fa000000 (32-bit, non-prefetchable) [size=16M]
    Memory at d8000000 (64-bit, prefetchable) [size=128M]
    Memory at d6000000 (64-bit, prefetchable) [size=32M]
    I/O ports at bc00 [size=128]
    Expansion ROM at fbb80000 [disabled] [size=512K]
    Capabilities: <access denied>
    Kernel driver in use: nouveau

Marc
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/