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Message-ID: <20180918055228.GN7632@shao2-debian>
Date: Tue, 18 Sep 2018 13:52:28 +0800
From: kernel test robot <rong.a.chen@...el.com>
To: Lyude Paul <lyude@...hat.com>
Cc: dri-devel@...ts.freedesktop.org, David Airlie <airlied@...ux.ie>,
Daniel Vetter <daniel.vetter@...ll.ch>,
linux-kernel@...r.kernel.org, stable@...r.kernel.org,
Sean Paul <sean@...rly.run>, lkp@...org
Subject: [LKP] [drm/atomic] 79ef5c1b82: general_protection_fault:#[##]
FYI, we noticed the following commit (built with gcc-6):
commit: 79ef5c1b820e59bcc240e133cd9df59b2b20415f ("[PATCH] drm/atomic: Use drm_drv_uses_atomic_modeset() for debugfs creation")
url: https://github.com/0day-ci/linux/commits/Lyude-Paul/drm-atomic-Use-drm_drv_uses_atomic_modeset-for-debugfs-creation/20180918-020244
in testcase: boot
on test machine: qemu-system-x86_64 -enable-kvm -cpu qemu64,+ssse3 -smp 4 -m 8G
caused below changes (please refer to attached dmesg/kmsg for entire log/backtrace):
+--------------------------------------------------------------------------------------+------------+------------+
| | ad3273d5f1 | 79ef5c1b82 |
+--------------------------------------------------------------------------------------+------------+------------+
| boot_successes | 6 | 0 |
| boot_failures | 2 | 6 |
| BUG:kernel_hang_in_early-boot_stage,last_printk:Probing_EDD(edd=off_to_disable)...ok | 2 | 2 |
| general_protection_fault:#[##] | 0 | 4 |
| RIP:drm_debugfs_init | 0 | 4 |
| Kernel_panic-not_syncing:Fatal_exception | 0 | 4 |
+--------------------------------------------------------------------------------------+------------+------------+
[ 185.861767] [drm] Driver supports precise vblank timestamp query.
[ 185.866054] [drm] Initialized vkms 1.0.0 20180514 for virtual device on minor 0
[ 185.870315] usbcore: registered new interface driver udl
[ 185.872276] kasan: CONFIG_KASAN_INLINE enabled
[ 185.873048] kasan: GPF could be caused by NULL-ptr deref or user memory access
[ 185.874526] general protection fault: 0000 [#1] SMP KASAN PTI
[ 185.875263] CPU: 1 PID: 1 Comm: swapper/0 Not tainted 4.19.0-rc4-00023-g79ef5c1 #1
[ 185.875263] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.10.2-1 04/01/2014
[ 185.875263] RIP: 0010:drm_debugfs_init+0x2fd/0x510
[ 185.875263] Code: 48 c1 e9 03 80 3c 11 00 0f 85 10 02 00 00 49 8b 96 00 0b 00 00 48 b9 00 00 00 00 00 fc ff df 48 8d 7a 28 48 89 fe 48 c1 ee 03 <80> 3c 0e 00 0f 85 a8 01 00 00 48 83 7a 28 00 0f 85 ab fe ff ff e9
[ 185.882598] RSP: 0000:ffff880107f9fa90 EFLAGS: 00010206
[ 185.882598] RAX: 0000000000000000 RBX: ffff8801071da000 RCX: dffffc0000000000
[ 185.882598] RDX: 0000000000000000 RSI: 0000000000000005 RDI: 0000000000000028
[ 185.882598] RBP: 1ffff10020ff3f54 R08: ffffed0020e3b407 R09: ffffed0020e3b406
[ 185.882598] R10: ffff8801071da037 R11: ffffed0020e3b407 R12: ffffffff86852de0
[ 185.882598] R13: 0000000000000000 R14: ffff8801d521d500 R15: 0000000000003000
[ 185.882598] FS: 0000000000000000(0000) GS:ffff8801e9e00000(0000) knlGS:0000000000000000
[ 185.882598] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 185.882598] CR2: 00000000ffffffff CR3: 0000000005624000 CR4: 00000000000006e0
[ 185.882598] Call Trace:
[ 185.882598] ? __kmalloc_track_caller+0x14f/0x2e0
[ 185.882598] ? drm_debugfs_create_files+0x420/0x420
[ 185.882598] ? memcpy+0x34/0x50
[ 185.882598] ? kstrdup+0x5a/0x70
[ 185.882598] ? lock_acquired+0x3f1/0xbf0
[ 185.898672] drm_minor_register+0xa4/0x220
[ 185.898672] drm_dev_register+0x10f/0x610
[ 185.898672] drm_get_pci_dev+0x195/0x4d0
[ 185.898672] bochs_pci_probe+0x1e6/0x2f0
[ 185.898672] pci_device_probe+0x2a7/0x4b0
[ 185.898672] ? pci_device_remove+0x2c0/0x2c0
[ 185.902591] really_probe+0x4db/0x780
[ 185.902591] driver_probe_device+0xe7/0x240
[ 185.902591] __driver_attach+0x262/0x2d0
[ 185.902591] ? driver_probe_device+0x240/0x240
[ 185.902591] bus_for_each_dev+0x138/0x1d0
[ 185.902591] ? bus_remove_file+0xe0/0xe0
[ 185.902591] bus_add_driver+0x2c5/0x5e0
[ 185.902591] ? qxl_init+0x7b/0x7b
[ 185.902591] driver_register+0x1b7/0x420
[ 185.902591] bochs_init+0x33/0x3e
[ 185.902591] do_one_initcall+0x11b/0x389
[ 185.902591] ? start_kernel+0x769/0x769
[ 185.902591] ? lock_downgrade+0x660/0x660
[ 185.902591] ? do_early_param+0x124/0x124
[ 185.902591] kernel_init_freeable+0x4c1/0x579
[ 185.902591] ? rest_init+0x130/0x130
[ 185.918576] kernel_init+0x14/0x190
[ 185.918576] ? _raw_spin_unlock_irq+0x29/0x70
[ 185.918576] ? rest_init+0x130/0x130
[ 185.918576] ret_from_fork+0x24/0x30
[ 185.932602] ---[ end trace 14d3235039b65adf ]---
[ 185.934465] RIP: 0010:drm_debugfs_init+0x2fd/0x510
[ 185.936354] Code: 48 c1 e9 03 80 3c 11 00 0f 85 10 02 00 00 49 8b 96 00 0b 00 00 48 b9 00 00 00 00 00 fc ff df 48 8d 7a 28 48 89 fe 48 c1 ee 03 <80> 3c 0e 00 0f 85 a8 01 00 00 48 83 7a 28 00 0f 85 ab fe ff ff e9
[ 185.949797] RSP: 0000:ffff880107f9fa90 EFLAGS: 00010206
[ 185.950782] RAX: 0000000000000000 RBX: ffff8801071da000 RCX: dffffc0000000000
[ 185.952070] RDX: 0000000000000000 RSI: 0000000000000005 RDI: 0000000000000028
[ 185.953367] RBP: 1ffff10020ff3f54 R08: ffffed0020e3b407 R09: ffffed0020e3b406
[ 185.954667] R10: ffff8801071da037 R11: ffffed0020e3b407 R12: ffffffff86852de0
[ 185.955950] R13: 0000000000000000 R14: ffff8801d521d500 R15: 0000000000003000
[ 185.957247] FS: 0000000000000000(0000) GS:ffff8801e9e00000(0000) knlGS:0000000000000000
[ 185.958712] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 185.959753] CR2: 00000000ffffffff CR3: 0000000005624000 CR4: 00000000000006e0
[ 185.961037] Kernel panic - not syncing: Fatal exception
[ 185.962695] Kernel Offset: disabled
Elapsed time: 190
#!/bin/bash
To reproduce:
git clone https://github.com/intel/lkp-tests.git
cd lkp-tests
bin/lkp qemu -k <bzImage> job-script # job-script is attached in this email
Thanks,
lkp
View attachment "config-4.19.0-rc4-00023-g79ef5c1" of type "text/plain" (116272 bytes)
View attachment "job-script" of type "text/plain" (4351 bytes)
Download attachment "dmesg.xz" of type "application/x-xz" (11496 bytes)
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