* Re: pci: endpoint test BUG
[not found] <20190916020630.1584-1-hdanton@sina.com>
@ 2019-09-16 2:58 ` Randy Dunlap
2019-09-16 11:22 ` Lorenzo Pieralisi
1 sibling, 0 replies; 10+ messages in thread
From: Randy Dunlap @ 2019-09-16 2:58 UTC (permalink / raw)
To: Hillf Danton
Cc: linux-pci, LKML, Kishon Vijay Abraham I, Lorenzo Pieralisi, Al Viro
On 9/15/19 7:06 PM, Hillf Danton wrote:
>
> On Sun, 15 Sep 2019 09:34:37 -0700
>>
>> Kernel is 5.3-rc8 on x86_64.
>>
>> Loading and removing the pci-epf-test module causes a BUG.
>>
>>
>> [40928.435755] calling pci_epf_test_init+0x0/0x1000 [pci_epf_test] @ 12132
>> [40928.436717] initcall pci_epf_test_init+0x0/0x1000 [pci_epf_test] returned 0 after 891 usecs
>> [40936.996081] ==================================================================
>> [40936.996125] BUG: KASAN: use-after-free in pci_epf_remove_cfs+0x1ae/0x1f0
>> [40936.996153] Write of size 8 at addr ffff88810a22a068 by task rmmod/12139
>
> Fix fb0de5b8dcc6 and ef1433f717a2 if the current group::group_entry
> used by pci epf does not break how configfs uses it.
>
> --- a/drivers/pci/endpoint/pci-epf-core.c
> +++ b/drivers/pci/endpoint/pci-epf-core.c
> @@ -153,9 +153,11 @@ static void pci_epf_remove_cfs(struct pc
> return;
>
> mutex_lock(&pci_epf_mutex);
> - list_for_each_entry_safe(group, tmp, &driver->epf_group, group_entry)
> + list_for_each_entry_safe(group, tmp, &driver->epf_group,
> + group_entry) {
> + list_del_init(&group->group_entry);
> pci_ep_cfs_remove_epf_group(group);
> - list_del(&driver->epf_group);
> + }
> mutex_unlock(&pci_epf_mutex);
> }
>
>
Fixes the problem for me. Thanks.
Tested-by: Randy Dunlap <rdunlap@infradead.org>
Please make a proper patch.
--
~Randy
^ permalink raw reply [flat|nested] 10+ messages in thread
* Re: pci: endpoint test BUG
[not found] <20190916020630.1584-1-hdanton@sina.com>
2019-09-16 2:58 ` pci: endpoint test BUG Randy Dunlap
@ 2019-09-16 11:22 ` Lorenzo Pieralisi
2019-09-17 5:40 ` Kishon Vijay Abraham I
1 sibling, 1 reply; 10+ messages in thread
From: Lorenzo Pieralisi @ 2019-09-16 11:22 UTC (permalink / raw)
To: Hillf Danton, Kishon Vijay Abraham I; +Cc: Randy Dunlap, linux-pci, LKML
On Mon, Sep 16, 2019 at 10:06:30AM +0800, Hillf Danton wrote:
>
> On Sun, 15 Sep 2019 09:34:37 -0700
> >
> > Kernel is 5.3-rc8 on x86_64.
> >
> > Loading and removing the pci-epf-test module causes a BUG.
> >
> >
> > [40928.435755] calling pci_epf_test_init+0x0/0x1000 [pci_epf_test] @ 12132
> > [40928.436717] initcall pci_epf_test_init+0x0/0x1000 [pci_epf_test] returned 0 after 891 usecs
> > [40936.996081] ==================================================================
> > [40936.996125] BUG: KASAN: use-after-free in pci_epf_remove_cfs+0x1ae/0x1f0
> > [40936.996153] Write of size 8 at addr ffff88810a22a068 by task rmmod/12139
>
> Fix fb0de5b8dcc6 and ef1433f717a2 if the current group::group_entry
> used by pci epf does not break how configfs uses it.
>
> --- a/drivers/pci/endpoint/pci-epf-core.c
> +++ b/drivers/pci/endpoint/pci-epf-core.c
> @@ -153,9 +153,11 @@ static void pci_epf_remove_cfs(struct pc
> return;
>
> mutex_lock(&pci_epf_mutex);
> - list_for_each_entry_safe(group, tmp, &driver->epf_group, group_entry)
> + list_for_each_entry_safe(group, tmp, &driver->epf_group,
> + group_entry) {
> + list_del_init(&group->group_entry);
> pci_ep_cfs_remove_epf_group(group);
> - list_del(&driver->epf_group);
> + }
> mutex_unlock(&pci_epf_mutex);
> }
Thank you Hillf. Kishon, can you confirm that's the proper fix for
this bug please ? I would like to turn this into a patch and merge
it in the upcoming merge window PR so it ought to be fairly quick,
please let me know asap.
Lorenzo
^ permalink raw reply [flat|nested] 10+ messages in thread
* Re: pci: endpoint test BUG
2019-09-16 11:22 ` Lorenzo Pieralisi
@ 2019-09-17 5:40 ` Kishon Vijay Abraham I
2019-09-20 15:20 ` Lorenzo Pieralisi
0 siblings, 1 reply; 10+ messages in thread
From: Kishon Vijay Abraham I @ 2019-09-17 5:40 UTC (permalink / raw)
To: Lorenzo Pieralisi, Hillf Danton; +Cc: Randy Dunlap, linux-pci, LKML
On 16/09/19 4:52 PM, Lorenzo Pieralisi wrote:
> On Mon, Sep 16, 2019 at 10:06:30AM +0800, Hillf Danton wrote:
>>
>> On Sun, 15 Sep 2019 09:34:37 -0700
>>>
>>> Kernel is 5.3-rc8 on x86_64.
>>>
>>> Loading and removing the pci-epf-test module causes a BUG.
>>>
>>>
>>> [40928.435755] calling pci_epf_test_init+0x0/0x1000 [pci_epf_test] @ 12132
>>> [40928.436717] initcall pci_epf_test_init+0x0/0x1000 [pci_epf_test] returned 0 after 891 usecs
>>> [40936.996081] ==================================================================
>>> [40936.996125] BUG: KASAN: use-after-free in pci_epf_remove_cfs+0x1ae/0x1f0
>>> [40936.996153] Write of size 8 at addr ffff88810a22a068 by task rmmod/12139
>>
>> Fix fb0de5b8dcc6 and ef1433f717a2 if the current group::group_entry
>> used by pci epf does not break how configfs uses it.
>>
>> --- a/drivers/pci/endpoint/pci-epf-core.c
>> +++ b/drivers/pci/endpoint/pci-epf-core.c
>> @@ -153,9 +153,11 @@ static void pci_epf_remove_cfs(struct pc
>> return;
>>
>> mutex_lock(&pci_epf_mutex);
>> - list_for_each_entry_safe(group, tmp, &driver->epf_group, group_entry)
>> + list_for_each_entry_safe(group, tmp, &driver->epf_group,
>> + group_entry) {
>> + list_del_init(&group->group_entry);
>> pci_ep_cfs_remove_epf_group(group);
>> - list_del(&driver->epf_group);
>> + }
>> mutex_unlock(&pci_epf_mutex);
>> }
Acked-by: Kishon Vijay Abraham I <kishon@ti.com>
>
> Thank you Hillf. Kishon, can you confirm that's the proper fix for
> this bug please ? I would like to turn this into a patch and merge
> it in the upcoming merge window PR so it ought to be fairly quick,
> please let me know asap.
>
> Lorenzo
>
^ permalink raw reply [flat|nested] 10+ messages in thread
* Re: pci: endpoint test BUG
2019-09-17 5:40 ` Kishon Vijay Abraham I
@ 2019-09-20 15:20 ` Lorenzo Pieralisi
2019-09-21 0:57 ` Randy Dunlap
0 siblings, 1 reply; 10+ messages in thread
From: Lorenzo Pieralisi @ 2019-09-20 15:20 UTC (permalink / raw)
To: Kishon Vijay Abraham I; +Cc: Hillf Danton, Randy Dunlap, linux-pci, LKML
On Tue, Sep 17, 2019 at 11:10:37AM +0530, Kishon Vijay Abraham I wrote:
>
> On 16/09/19 4:52 PM, Lorenzo Pieralisi wrote:
> > On Mon, Sep 16, 2019 at 10:06:30AM +0800, Hillf Danton wrote:
> >>
> >> On Sun, 15 Sep 2019 09:34:37 -0700
> >>>
> >>> Kernel is 5.3-rc8 on x86_64.
> >>>
> >>> Loading and removing the pci-epf-test module causes a BUG.
> >>>
> >>>
> >>> [40928.435755] calling pci_epf_test_init+0x0/0x1000 [pci_epf_test] @ 12132
> >>> [40928.436717] initcall pci_epf_test_init+0x0/0x1000 [pci_epf_test] returned 0 after 891 usecs
> >>> [40936.996081] ==================================================================
> >>> [40936.996125] BUG: KASAN: use-after-free in pci_epf_remove_cfs+0x1ae/0x1f0
> >>> [40936.996153] Write of size 8 at addr ffff88810a22a068 by task rmmod/12139
> >>
> >> Fix fb0de5b8dcc6 and ef1433f717a2 if the current group::group_entry
> >> used by pci epf does not break how configfs uses it.
> >>
> >> --- a/drivers/pci/endpoint/pci-epf-core.c
> >> +++ b/drivers/pci/endpoint/pci-epf-core.c
> >> @@ -153,9 +153,11 @@ static void pci_epf_remove_cfs(struct pc
> >> return;
> >>
> >> mutex_lock(&pci_epf_mutex);
> >> - list_for_each_entry_safe(group, tmp, &driver->epf_group, group_entry)
> >> + list_for_each_entry_safe(group, tmp, &driver->epf_group,
> >> + group_entry) {
> >> + list_del_init(&group->group_entry);
> >> pci_ep_cfs_remove_epf_group(group);
> >> - list_del(&driver->epf_group);
> >> + }
> >> mutex_unlock(&pci_epf_mutex);
> >> }
>
>
> Acked-by: Kishon Vijay Abraham I <kishon@ti.com>
>
> >
> > Thank you Hillf. Kishon, can you confirm that's the proper fix for
> > this bug please ? I would like to turn this into a patch and merge
> > it in the upcoming merge window PR so it ought to be fairly quick,
> > please let me know asap.
Kishon, Hillf, can you turn it into a patch and send it asap please ?
Thanks,
Lorenzo
^ permalink raw reply [flat|nested] 10+ messages in thread
* Re: pci: endpoint test BUG
2019-09-20 15:20 ` Lorenzo Pieralisi
@ 2019-09-21 0:57 ` Randy Dunlap
2019-09-21 3:32 ` Randy Dunlap
[not found] ` <c2cadd96-a6d5-45f9-9abc-4c89b4a8b056@VE1EUR03FT044.eop-EUR03.prod.protection.outlook.com>
0 siblings, 2 replies; 10+ messages in thread
From: Randy Dunlap @ 2019-09-21 0:57 UTC (permalink / raw)
To: Hillf Danton, Lorenzo Pieralisi, Kishon Vijay Abraham I; +Cc: linux-pci, LKML
On 9/20/19 5:38 PM, Hillf Danton wrote:
>>Kishon, Hillf, can you turn it into a patch and send it asap please ?
>
>
>
> What was sent a couple of days before,
>
>
>
> To: Bjorn Helgaas <bhelgaas@google.com>
>
> Cc: linux-pci <linux-pci@vger.kernel.org>, LKML <linux-kernel@vger.kernel.org>
>
> Subject: [PATCH] PCI: endpoint: Fix uaf on unregistering driver
>
> ...
>
>
>
> Fixes: ef1433f717a2 ("PCI: endpoint: Create configfs entry for each pci_epf_device_id table entry")
>
> Reported-and-tested-by: Randy Dunlap <rdunlap@infradead.org>
>
> Cc: Al Viro <viro@zeniv.linux.org.uk>
>
> Cc: Dan Carpenter <dan.carpenter@oracle.com>
>
> Cc: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
>
> Cc: Kishon Vijay Abraham I <kishon@ti.com>
>
> Cc: Andrey Konovalov <andreyknvl@google.com>
>
> Signed-off-by: Hillf Danton <hdanton@sina.com>
>
> ---
>
>
>
> and it is certain that <lorenzo.pieralisi@arm.com> is on the Cc list.
>
>
>
> It will be resent if no one saw the message.
I didn't see it and I can't find it on lore.kernel.org/linux-pci/.
--
~Randy
^ permalink raw reply [flat|nested] 10+ messages in thread
* Re: pci: endpoint test BUG
2019-09-21 0:57 ` Randy Dunlap
@ 2019-09-21 3:32 ` Randy Dunlap
[not found] ` <c2cadd96-a6d5-45f9-9abc-4c89b4a8b056@VE1EUR03FT044.eop-EUR03.prod.protection.outlook.com>
1 sibling, 0 replies; 10+ messages in thread
From: Randy Dunlap @ 2019-09-21 3:32 UTC (permalink / raw)
To: Hillf Danton, Lorenzo Pieralisi, Kishon Vijay Abraham I; +Cc: linux-pci, LKML
On 9/20/19 7:04 PM, Hillf Danton wrote:
>>
>
>>> It will be resent if no one saw the message.
>
>>
>
>> I didn't see it and I can't find it on lore.kernel.org/linux-pci/.
>
>>
>
> Respin, git send-email works/jj/pci-epf-uaf.txt
>
> ...
>
> From: Hillf Danton <hdanton@sina.com>
>
> To: Bjorn Helgaas <bhelgaas@google.com>
>
> Cc: linux-pci <linux-pci@vger.kernel.org>,
>
> LKML <linux-kernel@vger.kernel.org>,
>
> Randy Dunlap <rdunlap@infradead.org>,
>
> Al Viro <viro@zeniv.linux.org.uk>,
>
> Dan Carpenter <dan.carpenter@oracle.com>,
>
> Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>,
>
> Kishon Vijay Abraham I <kishon@ti.com>,
>
> Andrey Konovalov <andreyknvl@google.com>,
>
> Hillf Danton <hdanton@sina.com>
>
> Subject: [PATCH] PCI: endpoint: Fix uaf on unregistering driver
>
> Date: Sat, 21 Sep 2019 09:58:28 +0800
>
> Message-Id: <20190921015828.15644-1-hdanton@sina.com>
>
> MIME-Version: 1.0
>
> Content-Transfer-Encoding: 8bit
>
>
>
> Result: 250
>
>
>
> And let me know you see it.
No, not seeing the patch in my Inbox nor on lore.kernel.org.
It's a mystery to me.
--
~Randy
^ permalink raw reply [flat|nested] 10+ messages in thread
* Re: pci: endpoint test BUG
[not found] ` <c2cadd96-a6d5-45f9-9abc-4c89b4a8b056@VE1EUR03FT044.eop-EUR03.prod.protection.outlook.com>
@ 2019-09-23 9:55 ` Lorenzo Pieralisi
0 siblings, 0 replies; 10+ messages in thread
From: Lorenzo Pieralisi @ 2019-09-23 9:55 UTC (permalink / raw)
To: Hillf Danton; +Cc: Randy Dunlap, Kishon Vijay Abraham I, linux-pci, LKML
On Sat, Sep 21, 2019 at 10:04:55AM +0800, Hillf Danton wrote:
> >
>
> >> It will be resent if no one saw the message.
>
> >
>
> > I didn't see it and I can't find it on lore.kernel.org/linux-pci/.
>
> >
>
> Respin, git send-email works/jj/pci-epf-uaf.txt
>
> ...
>
> From: Hillf Danton <hdanton@sina.com>
>
> To: Bjorn Helgaas <bhelgaas@google.com>
>
> Cc: linux-pci <linux-pci@vger.kernel.org>,
>
> LKML <linux-kernel@vger.kernel.org>,
>
> Randy Dunlap <rdunlap@infradead.org>,
>
> Al Viro <viro@zeniv.linux.org.uk>,
>
> Dan Carpenter <dan.carpenter@oracle.com>,
>
> Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>,
>
> Kishon Vijay Abraham I <kishon@ti.com>,
>
> Andrey Konovalov <andreyknvl@google.com>,
>
> Hillf Danton <hdanton@sina.com>
>
> Subject: [PATCH] PCI: endpoint: Fix uaf on unregistering driver
>
> Date: Sat, 21 Sep 2019 09:58:28 +0800
>
> Message-Id: <20190921015828.15644-1-hdanton@sina.com>
>
> MIME-Version: 1.0
>
> Content-Transfer-Encoding: 8bit
>
>
>
> Result: 250
>
>
>
> And let me know you see it.
I do not think any of your messages hit the vger mailing lists, avoid
html.
I have not received any patch and they are not in the mailing list
archives either.
Please check your email/SMTP set-up. I do not apply patches that
are not on linux-pci@vger, worst case you can attach the patch to your
reply and I can send it on your behalf but we must do this quickly.
Lorenzo
> Thanks
>
> Hillf
>
^ permalink raw reply [flat|nested] 10+ messages in thread
* Re: pci: endpoint test BUG
2019-09-15 16:39 ` Al Viro
@ 2019-09-15 19:48 ` Randy Dunlap
0 siblings, 0 replies; 10+ messages in thread
From: Randy Dunlap @ 2019-09-15 19:48 UTC (permalink / raw)
To: Al Viro; +Cc: linux-pci, LKML, Kishon Vijay Abraham I, Lorenzo Pieralisi
On 9/15/19 9:39 AM, Al Viro wrote:
> On Sun, Sep 15, 2019 at 09:34:37AM -0700, Randy Dunlap wrote:
>> Kernel is 5.3-rc8 on x86_64.
>>
>> Loading and removing the pci-epf-test module causes a BUG.
>
> Ugh... Could you try to reproduce it on earlier kernels?
>
Sure... will get back to you.
--
~Randy
^ permalink raw reply [flat|nested] 10+ messages in thread
* Re: pci: endpoint test BUG
2019-09-15 16:34 Randy Dunlap
@ 2019-09-15 16:39 ` Al Viro
2019-09-15 19:48 ` Randy Dunlap
0 siblings, 1 reply; 10+ messages in thread
From: Al Viro @ 2019-09-15 16:39 UTC (permalink / raw)
To: Randy Dunlap; +Cc: linux-pci, LKML, Kishon Vijay Abraham I, Lorenzo Pieralisi
On Sun, Sep 15, 2019 at 09:34:37AM -0700, Randy Dunlap wrote:
> Kernel is 5.3-rc8 on x86_64.
>
> Loading and removing the pci-epf-test module causes a BUG.
Ugh... Could you try to reproduce it on earlier kernels?
^ permalink raw reply [flat|nested] 10+ messages in thread
* pci: endpoint test BUG
@ 2019-09-15 16:34 Randy Dunlap
2019-09-15 16:39 ` Al Viro
0 siblings, 1 reply; 10+ messages in thread
From: Randy Dunlap @ 2019-09-15 16:34 UTC (permalink / raw)
To: linux-pci, LKML; +Cc: Kishon Vijay Abraham I, Lorenzo Pieralisi
Kernel is 5.3-rc8 on x86_64.
Loading and removing the pci-epf-test module causes a BUG.
[40928.435755] calling pci_epf_test_init+0x0/0x1000 [pci_epf_test] @ 12132
[40928.436717] initcall pci_epf_test_init+0x0/0x1000 [pci_epf_test] returned 0 after 891 usecs
[40936.996081] ==================================================================
[40936.996125] BUG: KASAN: use-after-free in pci_epf_remove_cfs+0x1ae/0x1f0
[40936.996153] Write of size 8 at addr ffff88810a22a068 by task rmmod/12139
[40936.996193] CPU: 2 PID: 12139 Comm: rmmod Not tainted 5.3.0-rc8 #3
[40936.996217] Hardware name: TOSHIBA PORTEGE R835/Portable PC, BIOS Version 4.10 01/08/2013
[40936.996247] Call Trace:
[40936.996265] dump_stack+0x7b/0xb5
[40936.996288] print_address_description+0x6e/0x470
[40936.996316] __kasan_report+0x11a/0x198
[40936.996337] ? pci_epf_remove_cfs+0x1ae/0x1f0
[40936.996362] ? pci_epf_remove_cfs+0x1ae/0x1f0
[40936.996384] kasan_report+0x12/0x20
[40936.996404] __asan_report_store8_noabort+0x17/0x20
[40936.996427] pci_epf_remove_cfs+0x1ae/0x1f0
[40936.996452] pci_epf_unregister_driver+0xd/0x20
[40936.996476] pci_epf_test_exit+0x10/0x19 [pci_epf_test]
[40936.996500] __x64_sys_delete_module+0x329/0x490
[40936.996523] ? __ia32_sys_delete_module+0x490/0x490
[40936.996549] ? _raw_spin_unlock_irq+0x22/0x40
[40936.996582] do_syscall_64+0xaa/0x380
[40936.996601] ? prepare_exit_to_usermode+0xad/0x1b0
[40936.996625] entry_SYSCALL_64_after_hwframe+0x44/0xa9
[40936.996648] RIP: 0033:0x7fb84c88d187
[40936.996667] Code: 73 01 c3 48 8b 0d 11 ad 2b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 b0 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d e1 ac 2b 00 f7 d8 64 89 01 48
[40936.996724] RSP: 002b:00007ffc1c5c7b38 EFLAGS: 00000206 ORIG_RAX: 00000000000000b0
[40936.996753] RAX: ffffffffffffffda RBX: 00007ffc1c5c7b98 RCX: 00007fb84c88d187
[40936.996780] RDX: 000000000000000a RSI: 0000000000000800 RDI: 0000556838f1c7d8
[40936.996806] RBP: 0000556838f1c770 R08: 00007ffc1c5c6ab1 R09: 0000000000000000
[40936.996833] R10: 00007fb84c8fc5e0 R11: 0000000000000206 R12: 00007ffc1c5c7d60
[40936.996859] R13: 00007ffc1c5c975c R14: 0000556838f1c260 R15: 0000556838f1c770
[40936.996910] Allocated by task 12132:
[40936.996929] save_stack+0x21/0x90
[40936.996947] __kasan_kmalloc.constprop.8+0xa7/0xd0
[40936.996968] kasan_kmalloc+0x9/0x10
[40936.996988] configfs_register_default_group+0x63/0xe0
[40936.997010] pci_ep_cfs_add_epf_group+0x20/0x50
[40936.997031] __pci_epf_register_driver+0x2b2/0x410
[40936.997052] 0xffffffffc1c9004a
[40936.997070] do_one_initcall+0xab/0x2d5
[40936.997089] do_init_module+0x1c7/0x582
[40936.997107] load_module+0x4efa/0x5f30
[40936.997126] __do_sys_finit_module+0x12a/0x1b0
[40936.997146] __x64_sys_finit_module+0x6e/0xb0
[40936.997166] do_syscall_64+0xaa/0x380
[40936.997185] entry_SYSCALL_64_after_hwframe+0x44/0xa9
[40936.997218] Freed by task 12139:
[40936.997235] save_stack+0x21/0x90
[40936.997253] __kasan_slab_free+0x137/0x190
[40936.997281] kasan_slab_free+0xe/0x10
[40936.997301] kfree+0xb8/0x210
[40936.997320] configfs_unregister_default_group+0x15/0x20
[40936.997344] pci_ep_cfs_remove_epf_group+0x17/0x20
[40936.997367] pci_epf_remove_cfs+0x8e/0x1f0
[40936.997389] pci_epf_unregister_driver+0xd/0x20
[40936.997419] pci_epf_test_exit+0x10/0x19 [pci_epf_test]
[40936.997441] __x64_sys_delete_module+0x329/0x490
[40936.997462] do_syscall_64+0xaa/0x380
[40936.997480] entry_SYSCALL_64_after_hwframe+0x44/0xa9
[40936.997513] The buggy address belongs to the object at ffff88810a229fe8
which belongs to the cache kmalloc-192 of size 192
[40936.997557] The buggy address is located 128 bytes inside of
192-byte region [ffff88810a229fe8, ffff88810a22a0a8)
[40936.997597] The buggy address belongs to the page:
[40936.997619] page:ffffea0004288a00 refcount:1 mapcount:0 mapping:ffff888107c10f40 index:0x0 compound_mapcount: 0
[40936.997655] flags: 0x17ffc000010200(slab|head)
[40936.997677] raw: 0017ffc000010200 ffffea0004992e08 ffff888107c036b0 ffff888107c10f40
[40936.997706] raw: 0000000000000000 00000000001e001e 00000001ffffffff 0000000000000000
[40936.997734] page dumped because: kasan: bad access detected
[40936.997767] Memory state around the buggy address:
[40936.997789] ffff88810a229f00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[40936.997816] ffff88810a229f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fb fb fb
[40936.997843] >ffff88810a22a000: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[40936.997869] ^
[40936.997895] ffff88810a22a080: fb fb fb fb fb fc fc fc fc fc fc fc fc fc fc fc
[40936.997922] ffff88810a22a100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[40936.997948] ==================================================================
--
~Randy
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[not found] <20190916020630.1584-1-hdanton@sina.com>
2019-09-16 2:58 ` pci: endpoint test BUG Randy Dunlap
2019-09-16 11:22 ` Lorenzo Pieralisi
2019-09-17 5:40 ` Kishon Vijay Abraham I
2019-09-20 15:20 ` Lorenzo Pieralisi
2019-09-21 0:57 ` Randy Dunlap
2019-09-21 3:32 ` Randy Dunlap
[not found] ` <c2cadd96-a6d5-45f9-9abc-4c89b4a8b056@VE1EUR03FT044.eop-EUR03.prod.protection.outlook.com>
2019-09-23 9:55 ` Lorenzo Pieralisi
2019-09-15 16:34 Randy Dunlap
2019-09-15 16:39 ` Al Viro
2019-09-15 19:48 ` Randy Dunlap
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