Bug 192371 - WARN_ON(!msg->buffer != !msg->size) while booting 4.9.x versions
Summary: WARN_ON(!msg->buffer != !msg->size) while booting 4.9.x versions
Status: NEW
Alias: None
Product: Other
Classification: Unclassified
Component: Other (show other bugs)
Hardware: x86-64 Linux
: P1 normal
Assignee: other_other
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2017-01-11 07:45 UTC by hellenicglavkosmos
Modified: 2017-01-11 07:45 UTC (History)
0 users

See Also:
Kernel Version: 4.9.2
Subsystem:
Regression: No
Bisected commit-id:


Attachments
dmesg log (351.30 KB, text/x-log)
2017-01-11 07:45 UTC, hellenicglavkosmos
Details

Description hellenicglavkosmos 2017-01-11 07:45:30 UTC
Created attachment 251181 [details]
dmesg log

Booting linux kernel 4.9.x versions result in warnings about WARN_ON(!msg->buffer != !msg->size) in dmesg. However the system is not affected in any way and boots properly.

[    3.966325] WARNING: CPU: 1 PID: 195 at /home/kernel/COD/linux/drivers/gpu/drm/i915/intel_dp.c:1062 intel_dp_aux_transfer+0x1ed/0x230 [i915]
[    3.966325] WARN_ON(!msg->buffer != !msg->size)
[    3.966326] Modules linked in:
[    3.966326]  i915 ahci psmouse libahci wmi i2c_algo_bit drm_kms_helper video syscopyarea i2c_hid sdhci_acpi sysfillrect hid sdhci sysimgblt fb_sys_fops fjes r8169 drm mii
[    3.966334] CPU: 1 PID: 195 Comm: kworker/u8:3 Tainted: G        W       4.9.2-040902-generic #201701090331
[    3.966334] Hardware name: Hewlett-Packard HP 250 G4 Notebook PC/80C1, BIOS F.11 07/23/2015
[    3.966336] Workqueue: events_unbound async_run_entry_fn
[    3.966337]  ffffa95740973a70 ffffffff9281bd42 ffffa95740973ac0 0000000000000000
[    3.966339]  ffffa95740973ab0 ffffffff92483e7b 00000426faa83447 ffffa95740973b98
[    3.966341]  ffff8c61d0cef0e0 0000000000000003 00000000fffffffb 00000000fffffffb
[    3.966342] Call Trace:
[    3.966345]  [<ffffffff9281bd42>] dump_stack+0x63/0x81
[    3.966346]  [<ffffffff92483e7b>] __warn+0xcb/0xf0
[    3.966348]  [<ffffffff92483eff>] warn_slowpath_fmt+0x5f/0x80
[    3.966350]  [<ffffffff92c90999>] ? schedule_hrtimeout_range_clock+0xb9/0x1b0
[    3.966369]  [<ffffffffc02a5a9d>] intel_dp_aux_transfer+0x1ed/0x230 [i915]
[    3.966373]  [<ffffffffc0173c72>] drm_dp_dpcd_access+0x72/0x110 [drm_kms_helper]
[    3.966377]  [<ffffffffc0173d2b>] drm_dp_dpcd_write+0x1b/0x20 [drm_kms_helper]
[    3.966396]  [<ffffffffc02a070b>] intel_dp_start_link_train+0x2cb/0x4c0 [i915]
[    3.966415]  [<ffffffffc02a1c69>] intel_dp_check_link_status+0xd9/0x110 [i915]
[    3.966434]  [<ffffffffc02a649b>] intel_dp_long_pulse+0x40b/0xb10 [i915]
[    3.966453]  [<ffffffffc02a6beb>] intel_dp_detect+0x4b/0x60 [i915]
[    3.966457]  [<ffffffffc017515f>] drm_helper_probe_single_connector_modes+0x3ff/0x4f0 [drm_kms_helper]
[    3.966461]  [<ffffffffc0183ace>] drm_fb_helper_initial_config+0xae/0x430 [drm_kms_helper]
[    3.966482]  [<ffffffffc0297f78>] intel_fbdev_initial_config+0x18/0x30 [i915]
[    3.966483]  [<ffffffff924a8907>] async_run_entry_fn+0x37/0x150
[    3.966485]  [<ffffffff9249eb7c>] process_one_work+0x1fc/0x4b0
[    3.966486]  [<ffffffff9249ee7b>] worker_thread+0x4b/0x500
[    3.966487]  [<ffffffff9249ee30>] ? process_one_work+0x4b0/0x4b0
[    3.966489]  [<ffffffff924a54e9>] kthread+0xd9/0xf0
[    3.966491]  [<ffffffff924a5410>] ? kthread_park+0x60/0x60
[    3.966492]  [<ffffffff92c91d35>] ret_from_fork+0x25/0x30
[    3.966493] ---[ end trace 97eb299e0d03f3b2 ]---

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