[Bug 71208] [regression] module_reload segfault

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=71208

--- Comment #10 from lu hua <huax.lu at intel.com> ---
This issue still happens on -fixes kernel.
output:
./drv_module_reload: line 27:  3861 Killed                  rmmod i915
WARNING: i915.ko still loaded!
./drv_module_reload: line 43: /sys/class/vtconsole/vtcon1/bind: No such file or
directory

Call Trace:
[   46.531866]  [<ffffffffa000996a>] ? drm_put_minor+0x35/0x40 [drm]
[   46.531957]  [<ffffffffa0009985>] ? drm_dev_free+0x10/0x66 [drm]
[   46.532048]  [<ffffffff812eb5b1>] ? pci_device_remove+0x38/0x80
[   46.532138]  [<ffffffff8136e0cd>] ? __device_release_driver+0x82/0xdb
[   46.532228]  [<ffffffff8136e7c1>] ? driver_detach+0x6e/0x99
[   46.532317]  [<ffffffff8136df0f>] ? bus_remove_driver+0x78/0xb9
[   46.532407]  [<ffffffff812eb70a>] ? pci_unregister_driver+0x17/0x75
[   46.532498]  [<ffffffffa000b208>] ? drm_pci_exit+0x3b/0x72 [drm]
[   46.532589]  [<ffffffff81077d19>] ? SyS_delete_module+0x1a3/0x219
[   46.532679]  [<ffffffff81047783>] ? task_work_run+0x78/0x89
[   46.532769]  [<ffffffff8170f432>] ? page_fault+0x22/0x30
[   46.532858]  [<ffffffff81714122>] ? system_call_fastpath+0x16/0x1b
[   46.532946] Code: 18 be 2f 00 00 00 48 c7 c7 24 84 02 a0 e8 7a 99 02 e1 c6
05 2e 37 02 00 01 48 89 d8 5b c3 48 85 ff 53 48 89 fb 74 26 48 8b 47 10 <f6> 40
4c 02 74 1c e8 e7 d3 00 00 48 89 df e8 4c 2d 00 00 8b 33
[   46.535086] RIP  [<ffffffffa0009855>] drm_unplug_minor+0xd/0x31 [drm]
[   46.535207]  RSP <ffff8802530bde18>
[   46.535291] CR2: 000000000000004c
[   46.535380] ---[ end trace 3ef6dc145d6160c4 ]---

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