From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To: linux-kernel@vger.kernel.org
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
stable@vger.kernel.org, Dave Airlie <airlied@redhat.com>
Subject: [PATCH 3.10 06/80] drm/radeon: fix hotplug race at startup
Date: Tue, 1 Mar 2016 15:45:00 -0800 [thread overview]
Message-ID: <20160301234349.868219760@linuxfoundation.org> (raw)
In-Reply-To: <20160301234349.667990420@linuxfoundation.org>
3.10-stable review patch. If anyone has any objections, please let me know.
------------------
From: Dave Airlie <airlied@redhat.com>
commit 7f98ca454ad373fc1b76be804fa7138ff68c1d27 upstream.
We apparantly get a hotplug irq before we've initialised
modesetting,
[drm] Loading R100 Microcode
BUG: unable to handle kernel NULL pointer dereference at (null)
IP: [<c125f56f>] __mutex_lock_slowpath+0x23/0x91
*pde = 00000000
Oops: 0002 [#1]
Modules linked in: radeon(+) drm_kms_helper ttm drm i2c_algo_bit backlight pcspkr psmouse evdev sr_mod input_leds led_class cdrom sg parport_pc parport floppy intel_agp intel_gtt lpc_ich acpi_cpufreq processor button mfd_core agpgart uhci_hcd ehci_hcd rng_core snd_intel8x0 snd_ac97_codec ac97_bus snd_pcm usbcore usb_common i2c_i801 i2c_core snd_timer snd soundcore thermal_sys
CPU: 0 PID: 15 Comm: kworker/0:1 Not tainted 4.2.0-rc7-00015-gbf67402 #111
Hardware name: MicroLink /D850MV , BIOS MV85010A.86A.0067.P24.0304081124 04/08/2003
Workqueue: events radeon_hotplug_work_func [radeon]
task: f6ca5900 ti: f6d3e000 task.ti: f6d3e000
EIP: 0060:[<c125f56f>] EFLAGS: 00010282 CPU: 0
EIP is at __mutex_lock_slowpath+0x23/0x91
EAX: 00000000 EBX: f5e900fc ECX: 00000000 EDX: fffffffe
ESI: f6ca5900 EDI: f5e90100 EBP: f5e90000 ESP: f6d3ff0c
DS: 007b ES: 007b FS: 0000 GS: 0000 SS: 0068
CR0: 8005003b CR2: 00000000 CR3: 36f61000 CR4: 000006d0
Stack:
f5e90100 00000000 c103c4c1 f6d2a5a0 f5e900fc f6df394c c125f162 f8b0faca
f6d2a5a0 c138ca00 f6df394c f7395600 c1034741 00d40000 00000000 f6d2a5a0
c138ca00 f6d2a5b8 c138ca10 c1034b58 00000001 f6d40000 f6ca5900 f6d0c940
Call Trace:
[<c103c4c1>] ? dequeue_task_fair+0xa4/0xb7
[<c125f162>] ? mutex_lock+0x9/0xa
[<f8b0faca>] ? radeon_hotplug_work_func+0x17/0x57 [radeon]
[<c1034741>] ? process_one_work+0xfc/0x194
[<c1034b58>] ? worker_thread+0x18d/0x218
[<c10349cb>] ? rescuer_thread+0x1d5/0x1d5
[<c103742a>] ? kthread+0x7b/0x80
[<c12601c0>] ? ret_from_kernel_thread+0x20/0x30
[<c10373af>] ? init_completion+0x18/0x18
Code: 42 08 e8 8e a6 dd ff c3 57 56 53 83 ec 0c 8b 35 48 f7 37 c1 8b 10 4a 74 1a 89 c3 8d 78 04 8b 40 08 89 63
Reported-and-Tested-by: Meelis Roos <mroos@linux.ee>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/gpu/drm/radeon/radeon_irq_kms.c | 5 +++++
1 file changed, 5 insertions(+)
--- a/drivers/gpu/drm/radeon/radeon_irq_kms.c
+++ b/drivers/gpu/drm/radeon/radeon_irq_kms.c
@@ -73,6 +73,11 @@ static void radeon_hotplug_work_func(str
struct drm_mode_config *mode_config = &dev->mode_config;
struct drm_connector *connector;
+ /* we can race here at startup, some boards seem to trigger
+ * hotplug irqs when they shouldn't. */
+ if (!rdev->mode_info.mode_config_initialized)
+ return;
+
mutex_lock(&mode_config->mutex);
if (mode_config->num_connector) {
list_for_each_entry(connector, &mode_config->connector_list, head)
next prev parent reply other threads:[~2016-03-02 2:39 UTC|newest]
Thread overview: 80+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-03-01 23:44 [PATCH 3.10 00/80] 3.10.99-stable review Greg Kroah-Hartman
2016-03-01 23:44 ` [PATCH 3.10 01/80] tracepoints: Do not trace when cpu is offline Greg Kroah-Hartman
2016-03-01 23:44 ` [PATCH 3.10 02/80] drm/ast: Initialized data needed to map fbdev memory Greg Kroah-Hartman
2016-03-01 23:44 ` [PATCH 3.10 03/80] netfilter: nf_conntrack: fix RCU race in nf_conntrack_find_get Greg Kroah-Hartman
2016-03-01 23:44 ` [PATCH 3.10 04/80] bcache: unregister reboot notifier if bcache fails to unregister device Greg Kroah-Hartman
2016-03-01 23:44 ` [PATCH 3.10 05/80] tools: Add a "make all" rule Greg Kroah-Hartman
2016-03-01 23:45 ` Greg Kroah-Hartman [this message]
2016-03-01 23:45 ` [PATCH 3.10 07/80] efi: Disable interrupts around EFI calls, not in the epilog/prolog calls Greg Kroah-Hartman
2016-03-01 23:45 ` [PATCH 3.10 08/80] dm thin metadata: fix bug when taking a metadata snapshot Greg Kroah-Hartman
2016-03-01 23:45 ` [PATCH 3.10 09/80] dm thin: fix race condition when destroying thin pool workqueue Greg Kroah-Hartman
2016-03-01 23:45 ` [PATCH 3.10 10/80] can: ems_usb: Fix possible tx overflow Greg Kroah-Hartman
2016-03-01 23:45 ` [PATCH 3.10 11/80] USB: cp210x: add IDs for GE B650V3 and B850V3 boards Greg Kroah-Hartman
2016-03-01 23:45 ` [PATCH 3.10 12/80] USB: option: add support for SIM7100E Greg Kroah-Hartman
2016-03-01 23:45 ` [PATCH 3.10 14/80] proc: Fix ptrace-based permission checks for accessing task maps Greg Kroah-Hartman
2016-03-01 23:45 ` [PATCH 3.10 15/80] iw_cxgb3: Fix incorrectly returning error on success Greg Kroah-Hartman
2016-03-01 23:45 ` [PATCH 3.10 16/80] MIPS: KVM: Fix ASID restoration logic Greg Kroah-Hartman
2016-03-01 23:45 ` [PATCH 3.10 17/80] MIPS: KVM: Fix CACHE immediate offset sign extension Greg Kroah-Hartman
2016-03-01 23:45 ` [PATCH 3.10 18/80] MIPS: KVM: Uninit VCPU in vcpu_create error path Greg Kroah-Hartman
2016-03-01 23:45 ` [PATCH 3.10 19/80] splice: sendfile() at once fails for big files Greg Kroah-Hartman
2016-03-01 23:45 ` [PATCH 3.10 21/80] unix: correctly track in-flight fds in sending process user_struct Greg Kroah-Hartman
2016-03-01 23:45 ` [PATCH 3.10 23/80] dts: vt8500: Add SDHC node to DTS file for WM8650 Greg Kroah-Hartman
2016-03-01 23:45 ` [PATCH 3.10 24/80] clocksource/drivers/vt8500: Increase the minimum delta Greg Kroah-Hartman
2016-03-01 23:45 ` [PATCH 3.10 25/80] lockd: create NSM handles per net namespace Greg Kroah-Hartman
2016-03-01 23:45 ` [PATCH 3.10 26/80] devres: fix a for loop bounds check Greg Kroah-Hartman
2016-03-01 23:45 ` [PATCH 3.10 27/80] wm831x_power: Use IRQF_ONESHOT to request threaded IRQs Greg Kroah-Hartman
2016-03-01 23:45 ` [PATCH 3.10 28/80] megaraid_sas: Do not use PAGE_SIZE for max_sectors Greg Kroah-Hartman
2016-03-01 23:45 ` [PATCH 3.10 29/80] megaraid_sas : SMAP restriction--do not access user memory from IOCTL code Greg Kroah-Hartman
2016-03-01 23:45 ` [PATCH 3.10 30/80] mmc: remove bondage between REQ_META and reliable write Greg Kroah-Hartman
2016-03-01 23:45 ` [PATCH 3.10 31/80] mac: validate mac_partition is within sector Greg Kroah-Hartman
2016-03-01 23:45 ` [PATCH 3.10 32/80] ARC: dw2 unwind: Remove falllback linear search thru FDE entries Greg Kroah-Hartman
2016-03-01 23:45 ` [PATCH 3.10 33/80] vfs: Avoid softlockups with sendfile(2) Greg Kroah-Hartman
2016-03-01 23:45 ` [PATCH 3.10 34/80] ring-buffer: Update read stamp with first real commit on page Greg Kroah-Hartman
2016-03-01 23:45 ` [PATCH 3.10 35/80] virtio: fix memory leak of virtio ida cache layers Greg Kroah-Hartman
2016-03-01 23:45 ` [PATCH 3.10 36/80] mac80211: mesh: fix call_rcu() usage Greg Kroah-Hartman
2016-03-01 23:45 ` [PATCH 3.10 37/80] RDS: fix race condition when sending a message on unbound socket Greg Kroah-Hartman
2016-03-01 23:45 ` [PATCH 3.10 38/80] can: sja1000: clear interrupts on start Greg Kroah-Hartman
2016-03-01 23:45 ` [PATCH 3.10 39/80] sched/core: Remove false-positive warning from wake_up_process() Greg Kroah-Hartman
2016-03-01 23:45 ` [PATCH 3.10 40/80] sata_sil: disable trim Greg Kroah-Hartman
2016-03-01 23:45 ` [PATCH 3.10 41/80] dm btree: fix bufio buffer leaks in dm_btree_del() error path Greg Kroah-Hartman
2016-03-01 23:45 ` [PATCH 3.10 42/80] vgaarb: fix signal handling in vga_get() Greg Kroah-Hartman
2016-03-01 23:45 ` [PATCH 3.10 43/80] rfkill: copy the name into the rfkill struct Greg Kroah-Hartman
2016-03-01 23:45 ` [PATCH 3.10 44/80] ses: Fix problems with simple enclosures Greg Kroah-Hartman
2016-03-01 23:45 ` [PATCH 3.10 45/80] ses: fix additional element traversal bug Greg Kroah-Hartman
2016-03-01 23:45 ` [PATCH 3.10 46/80] scripts: recordmcount: break hardlinks Greg Kroah-Hartman
2016-03-01 23:45 ` [PATCH 3.10 47/80] Btrfs: add missing brelse when superblock checksum fails Greg Kroah-Hartman
2016-03-01 23:45 ` [PATCH 3.10 48/80] Btrfs: igrab inode in writepage Greg Kroah-Hartman
2016-03-01 23:45 ` [PATCH 3.10 49/80] Btrfs: send, dont BUG_ON() when an empty symlink is found Greg Kroah-Hartman
2016-03-01 23:45 ` [PATCH 3.10 50/80] Btrfs: fix number of transaction units required to create symlink Greg Kroah-Hartman
2016-03-01 23:45 ` [PATCH 3.10 51/80] s390: fix normalization bug in exception table sorting Greg Kroah-Hartman
2016-03-01 23:45 ` [PATCH 3.10 52/80] s390/dasd: prevent incorrect length error under z/VM after PAV changes Greg Kroah-Hartman
2016-03-01 23:45 ` [PATCH 3.10 53/80] s390/dasd: fix refcount for PAV reassignment Greg Kroah-Hartman
2016-03-01 23:45 ` [PATCH 3.10 54/80] uml: flush stdout before forking Greg Kroah-Hartman
2016-03-01 23:45 ` [PATCH 3.10 55/80] uml: fix hostfs mknod() Greg Kroah-Hartman
2016-03-01 23:45 ` [PATCH 3.10 56/80] [media] media: dvb-core: Dont force CAN_INVERSION_AUTO in oneshot mode Greg Kroah-Hartman
2016-03-01 23:45 ` [PATCH 3.10 57/80] [media] gspca: ov534/topro: prevent a division by 0 Greg Kroah-Hartman
2016-03-01 23:45 ` [PATCH 3.10 58/80] [media] tda1004x: only update the frontend properties if locked Greg Kroah-Hartman
2016-03-01 23:45 ` [PATCH 3.10 59/80] dm snapshot: fix hung bios when copy error occurs Greg Kroah-Hartman
2016-03-01 23:45 ` [PATCH 3.10 60/80] posix-clock: Fix return code on the poll methods error path Greg Kroah-Hartman
2016-03-01 23:45 ` [PATCH 3.10 61/80] mmc: mmci: fix an ages old detection error Greg Kroah-Hartman
2016-03-01 23:45 ` [PATCH 3.10 62/80] sparc64: fix incorrect sign extension in sys_sparc64_personality Greg Kroah-Hartman
2016-03-01 23:45 ` [PATCH 3.10 63/80] drm/vmwgfx: respect nomodeset Greg Kroah-Hartman
2016-03-01 23:45 ` [PATCH 3.10 64/80] drm/radeon: clean up fujitsu quirks Greg Kroah-Hartman
2016-03-01 23:46 ` [PATCH 3.10 67/80] IB/qib: fix mcast detach when qp not attached Greg Kroah-Hartman
2016-03-01 23:46 ` [PATCH 3.10 68/80] libceph: dont bail early from try_read() when skipping a message Greg Kroah-Hartman
2016-03-01 23:46 ` [PATCH 3.10 69/80] cdc-acm:exclude Samsung phone 04e8:685d Greg Kroah-Hartman
2016-03-01 23:46 ` [PATCH 3.10 70/80] rfkill: fix rfkill_fop_read wait_event usage Greg Kroah-Hartman
2016-03-01 23:46 ` [PATCH 3.10 71/80] Revert "workqueue: make sure delayed work run in local cpu" Greg Kroah-Hartman
2016-03-01 23:46 ` [PATCH 3.10 72/80] libata: fix sff host state machine locking while polling Greg Kroah-Hartman
2016-03-01 23:46 ` [PATCH 3.10 73/80] PCI/AER: Flush workqueue on device remove to avoid use-after-free Greg Kroah-Hartman
2016-03-01 23:46 ` [PATCH 3.10 74/80] nfs: fix nfs_size_to_loff_t Greg Kroah-Hartman
2016-03-01 23:46 ` [PATCH 3.10 75/80] KVM: async_pf: do not warn on page allocation failures Greg Kroah-Hartman
2016-03-01 23:46 ` [PATCH 3.10 76/80] tracing: Fix showing function event in available_events Greg Kroah-Hartman
2016-03-01 23:46 ` [PATCH 3.10 77/80] sunrpc/cache: fix off-by-one in qword_get() Greg Kroah-Hartman
2016-03-01 23:46 ` [PATCH 3.10 78/80] kernel/resource.c: fix muxed resource handling in __request_region() Greg Kroah-Hartman
2016-03-01 23:46 ` [PATCH 3.10 79/80] do_last(): dont let a bogus return value from ->open() et.al. to confuse us Greg Kroah-Hartman
2016-03-01 23:46 ` [PATCH 3.10 80/80] xen/pcifront: Fix mysterious crashes when NUMA locality information was extracted Greg Kroah-Hartman
2016-03-02 1:37 ` [PATCH 3.10 00/80] 3.10.99-stable review Shuah Khan
2016-03-02 14:32 ` Guenter Roeck
2016-03-02 15:48 ` Willy Tarreau
2016-03-02 17:29 ` Greg Kroah-Hartman
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