linux-kernel - kasan inline + CONFIG_DEBUG_TEST_DRIVER

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Date:   Mon, 10 Oct 2016 11:37:27 -0400 (EDT)
From:   CAI Qian <caiqian@...hat.com>
To:     Rob Herring <robh@...nel.org>
Cc:     linux-kernel <linux-kernel@...r.kernel.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Subject: kasan inline + CONFIG_DEBUG_TEST_DRIVER_REMOVE kernel panic

Not sure if anyone reported this before. With this kernel config, it is 100% kernel panic so far with today's
mainline master HEAD.

http://people.redhat.com/qcai/tmp/config-kasan-remove

[   36.318420] PCI-DMA: Using software bounce buffering for IO (SWIOTLB)
[   36.325626] software IO TLB [mem 0x71c7d000-0x75c7d000] (64MB) mapped at [ffff880071c7d000-ffff880075c7cfff]
[   36.339108] Intel CQM monitoring enabled
[   36.343507] Intel MBM enabled
[   36.358713] RAPL PMU: API unit is 2^-32 Joules, 4 fixed counters, 655360 ms ovfl timer
[   36.367563] RAPL PMU: hw unit of domain pp0-core 2^-14 Joules
[   36.373984] RAPL PMU: hw unit of domain package 2^-14 Joules
[   36.380308] RAPL PMU: hw unit of domain dram 2^-14 Joules
[   36.386337] RAPL PMU: hw unit of domain pp1-gpu 2^-14 Joules
[   36.410064] kasan: CONFIG_KASAN_INLINE enabled
[   36.415042] kasan: GPF could be caused by NULL-ptr deref or user memory access
[   36.423111] general protection fault: 0000 [#1] PREEMPT SMP KASAN
[   36.429911] Modules linked in:
[   36.433331] CPU: 48 PID: 1 Comm: swapper/0 Not tainted 4.8.0remove+ #4
[   36.440616] Hardware name: Intel Corporation S2600WTT/S2600WTT, BIOS GRRFSDP1.86B.0271.R00.1510301446 10/30/2015
[   36.451974] task: ffff880e524d0000 task.stack: ffff880852880000
[   36.458578] RIP: 0010:[<ffffffff81ea08c0>]  [<ffffffff81ea08c0>] device_del+0x80/0x700
[   36.467431] RSP: 0000:ffff880852887938  EFLAGS: 00010246
[   36.473357] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 1ffff10109e6f101
[   36.481319] RDX: dffffc0000000000 RSI: 000000000000000b RDI: 0000000000000000
[   36.489281] RBP: ffff8808528879e8 R08: 0000000000000001 R09: 0000000000000000
[   36.497243] R10: 0000000000000000 R11: 0000000000000000 R12: ffff880e501b4b00
[   36.505208] R13: ffff880e31988480 R14: 0000000000000001 R15: ffff880e31988480
[   36.513171] FS:  0000000000000000(0000) GS:ffff88085ec80000(0000) knlGS:0000000000000000
[   36.522201] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   36.528613] CR2: 0000000000000000 CR3: 0000000002e0a000 CR4: 00000000003406e0
[   36.536576] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   36.544537] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   36.552499] Stack:
[   36.554742]  1ffff1010a510f28 1ffff1010a510f2c ffffffff82d3abe4 ffffffff81a6d060
[   36.563037]  0000000000000296 0000000041b58ab3 ffffffff82d48cc5 ffffffff81ea0840
[   36.571329]  ffffffff828a3040 ffff880800000000 ffff880852887980 ffffffff82f0ba20
[   36.579624] Call Trace:
[   36.582355]  [<ffffffff81a6d060>] ? idr_mark_full+0xc0/0xc0
[   36.588573]  [<ffffffff81ea0840>] ? cleanup_glue_dir+0xe0/0xe0
[   36.595086]  [<ffffffff814c228d>] perf_pmu_unregister+0x18d/0x530
[   36.601890]  [<ffffffff826f8811>] ? _raw_spin_unlock+0x31/0x50
[   36.608393]  [<ffffffff8103c54e>] ? uncore_pcibus_to_physid+0x10e/0x1c0
[   36.615766]  [<ffffffff810418ee>] uncore_pci_remove+0x24e/0x440
[   36.622375]  [<ffffffff81b91662>] pci_device_remove+0xa2/0x1e0
[   36.628888]  [<ffffffff81eadd01>] driver_probe_device+0x171/0xd50
[   36.635688]  [<ffffffff81eae8e0>] ? driver_probe_device+0xd50/0xd50
[   36.642685]  [<ffffffff81eaea79>] __driver_attach+0x199/0x1e0
[   36.649097]  [<ffffffff81ea7fc6>] bus_for_each_dev+0x126/0x1e0
[   36.655607]  [<ffffffff81ea7ea0>] ? subsys_dev_iter_exit+0x10/0x10
[   36.662508]  [<ffffffff812103ae>] ? preempt_count_sub+0x5e/0xe0
[   36.669105]  [<ffffffff81eacc1d>] driver_attach+0x3d/0x50
[   36.675129]  [<ffffffff81eabd84>] bus_add_driver+0x554/0x790
[   36.681444]  [<ffffffff81eb067c>] driver_register+0x18c/0x3b0
[   36.687861]  [<ffffffff812b3212>] ? __raw_spin_lock_init+0x32/0x100
[   36.694854]  [<ffffffff81b8bbea>] __pci_register_driver+0x13a/0x1e0
[   36.701853]  [<ffffffff83492467>] intel_uncore_init+0x465/0x54f
[   36.708459]  [<ffffffff83492002>] ? uncore_type_init+0x4d6/0x4d6
[   36.715165]  [<ffffffff81002299>] do_one_initcall+0xa9/0x240
[   36.721473]  [<ffffffff810021f0>] ? initcall_blacklisted+0x180/0x180
[   36.728568]  [<ffffffff811f5a10>] ? parse_args+0x520/0x990
[   36.734692]  [<ffffffff811d5bc2>] ? __usermodehelper_set_disable_depth+0x42/0x50
[   36.742948]  [<ffffffff83485d1f>] kernel_init_freeable+0x540/0x610
[   36.749845]  [<ffffffff834857df>] ? start_kernel+0x70d/0x70d
[   36.756161]  [<ffffffff826f88ad>] ? _raw_spin_unlock_irq+0x3d/0x60
[   36.763060]  [<ffffffff8120eb19>] ? finish_task_switch+0x189/0x6c0
[   36.769957]  [<ffffffff8120eaeb>] ? finish_task_switch+0x15b/0x6c0
[   36.776857]  [<ffffffff826e0060>] ? rest_init+0x160/0x160
[   36.782875]  [<ffffffff826e0073>] kernel_init+0x13/0x120
[   36.788802]  [<ffffffff826e0060>] ? rest_init+0x160/0x160
[   36.794826]  [<ffffffff826f93ba>] ret_from_fork+0x2a/0x40
[   36.800851] Code: 81 c7 00 f1 f1 f1 f1 c7 40 04 00 07 f4 f4 c7 40 08 f3 f3 f3 f3 65 48 8b 04 25 28 00 00 00 48 89 45 d0 31 c0 48 89 f8 48 c1 e8 03 <80> 3c 10 00 0f 85 1a 06 00 00 48 8b 03 48 89 85 68 ff ff ff 48 
[   36.822549] RIP  [<ffffffff81ea08c0>] device_del+0x80/0x700
[   36.828778]  RSP <ffff880852887938>
[   36.832743] ---[ end trace f3cec3a0c6cb2258 ]---
[   36.838054] Kernel panic - not syncing: Fatal exception
[   36.843967] ---[ end Kernel panic - not syncing: Fatal exception