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* treewide: Fix function prototypes for module_param_call()Kees Cook2017-10-311-1/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Several function prototypes for the set/get functions defined by module_param_call() have a slightly wrong argument types. This fixes those in an effort to clean up the calls when running under type-enforced compiler instrumentation for CFI. This is the result of running the following semantic patch: @match_module_param_call_function@ declarer name module_param_call; identifier _name, _set_func, _get_func; expression _arg, _mode; @@ module_param_call(_name, _set_func, _get_func, _arg, _mode); @fix_set_prototype depends on match_module_param_call_function@ identifier match_module_param_call_function._set_func; identifier _val, _param; type _val_type, _param_type; @@ int _set_func( -_val_type _val +const char * _val , -_param_type _param +const struct kernel_param * _param ) { ... } @fix_get_prototype depends on match_module_param_call_function@ identifier match_module_param_call_function._get_func; identifier _val, _param; type _val_type, _param_type; @@ int _get_func( -_val_type _val +char * _val , -_param_type _param +const struct kernel_param * _param ) { ... } Two additional by-hand changes are included for places where the above Coccinelle script didn't notice them: drivers/platform/x86/thinkpad_acpi.c fs/lockd/svc.c Signed-off-by: Kees Cook <keescook@chromium.org> Signed-off-by: Jessica Yu <jeyu@kernel.org>
* edac: rename edac_core.h to edac_mc.hMauro Carvalho Chehab2016-12-151-1/+1
| | | | | | | Now, all left at edac_core.h are at drivers/edac/edac_mc.c, so rename it to edac_mc.h. Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
* EDAC: Rework workqueue handlingBorislav Petkov2015-12-111-29/+0
| | | | | | | | | | | | Hide the EDAC workqueue pointer in a separate compilation unit and add accessors for the workqueue manipulations needed. Remove edac_pci_reset_delay_period() which wasn't used by anything. It seems it got added without a user with 91b99041c1d5 ("drivers/edac: updated PCI monitoring") Signed-off-by: Borislav Petkov <bp@suse.de>
* EDAC: Unexport and make edac_subsys staticBorislav Petkov2015-12-111-2/+1
| | | | | | ... and use the accessor instead. Signed-off-by: Borislav Petkov <bp@suse.de>
* EDAC: Rip out the edac_subsys reference countingBorislav Petkov2015-12-111-0/+40
| | | | | | | | | | | | | This was really dumb - reference counting for the main EDAC sysfs object. While we could've simply registered it as the first thing in the module init path and then hand it around to what needs it. Do that and rip out all the code around it, thus simplifying the whole handling significantly. Move the edac_subsys node back to edac_module.c. Signed-off-by: Borislav Petkov <bp@suse.de>
* EDAC: Properly unwind on failure path in edac_init()Alexey Khoroshilov2015-02-231-5/+8
| | | | | | | | | | | | | | | edac_init() does not deallocate already allocated resources on failure path. Found by Linux Driver Verification project (linuxtesting.org). [ Boris: The unwind path functions have __exit annotation but are being used in an __init function, leading to section mismatches. Drop the section annotation and make them normal functions. ] Signed-off-by: Alexey Khoroshilov <khoroshilov@ispras.ru> Link: http://lkml.kernel.org/r/1423203162-26368-1-git-send-email-khoroshilov@ispras.ru Signed-off-by: Borislav Petkov <bp@suse.de>
* EDAC, edac_module.c: Remove unnecessary test on unsigned valueFabian Frederick2014-06-241-1/+1
| | | | | | | | | unsigned long value is never < 0. Cc: Doug Thompson <dougthompson@xmission.com> Signed-off-by: Fabian Frederick <fabf@skynet.be> Link: http://lkml.kernel.org/r/1402341618-10674-1-git-send-email-fabf@skynet.be Signed-off-by: Borislav Petkov <bp@suse.de>
* edac: initialize the core earlierMauro Carvalho Chehab2013-02-211-1/+1
| | | | | | | | | | | | | | | | | In order for it to work with it builtin, the EDAC core should be initialized earlier, otherwise the ghes_edac driver initializes before edac_mc_sysfs_init() being called: ... [ 4.998373] EDAC MC0: Giving out device to 'ghes_edac.c' 'ghes_edac': DEV ghes ... [ 4.998373] EDAC MC1: Giving out device to 'ghes_edac.c' 'ghes_edac': DEV ghes [ 6.519495] EDAC MC: Ver: 3.0.0 [ 6.523749] EDAC DEBUG: edac_mc_sysfs_init: device mc created The net result is that no EDAC sysfs nodes will appear. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* EDAC: Boundary-check edac_debug_levelBorislav Petkov2012-11-281-7/+20
| | | | | | | | Only levels [0:4] are allowed so enforce that. Also, while at it, massage Kconfig text and add valid debug levels range to the module parameter description. Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
* edac: create top-level debugfs directoryRob Herring2012-06-121-0/+3
| | | | | | | | | Create a single, top-level "edac" directory for debugfs. An "mc[0-N]" directory is then created for each memory controller. Individual drivers can create additional entries such as h/w error injection control. Signed-off-by: Rob Herring <rob.herring@calxeda.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* edac: Increase version to 3.0.0Mauro Carvalho Chehab2012-06-111-1/+1
| | | | | | | | | | | | | | | There were lots of changes introduced to justify renaming it to 3.0.0: - EDAC core were redesigned to represent all types of memory controllers; - EDAC API were redesigned to properly represent the memory controller hierarchy; - a tracepoint-based API were added to report memory errors. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* edac: Convert debugfX to edac_dbg(X,Joe Perches2012-06-111-1/+1
| | | | | | | | | | Use a more common debugging style. Remove __FILE__ uses, add missing newlines, coalesce formats and align arguments. Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* edac: Don't add __func__ or __FILE__ for debugf[0-9] msgsMauro Carvalho Chehab2012-06-111-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | The debug macro already adds that. Most of the work here was made by this small script: $f .=$_ while (<>); $f =~ s/(debugf[0-9]\s*\(\s*)__FILE__\s*": /\1"/g; $f =~ s/(debugf[0-9]\s*\(\s*)__FILE__\s*/\1/g; $f =~ s/(debugf[0-9]\s*\(\s*)__FILE__\s*"MC: /\1"/g; $f =~ s/(debugf[0-9]\s*\(\")\%s[\:\,\(\)]*\s*([^\"]*\s*[^\)]+)__func__\s*\,\s*/\1\2/g; $f =~ s/(debugf[0-9]\s*\(\")\%s[\:\,\(\)]*\s*([^\"]*\s*[^\)]+),\s*__func__\s*\)/\1\2)/g; $f =~ s/(debugf[0-9]\s*\(\"MC\:\s*)\%s[\:\,\(\)]*\s*([^\"]*\s*[^\)]+)__func__\s*\,\s*/\1\2/g; $f =~ s/(debugf[0-9]\s*\(\"MC\:\s*)\%s[\:\,\(\)]*\s*([^\"]*\s*[^\)]+),\s*__func__\s*\)/\1\2)/g; $f =~ s/\"MC\: \\n\"/"MC:\\n"/g; print $f; After running the script, manual cleanups were done to fix it the remaining places. While here, removed the __LINE__ on most places, as it doesn't actually give useful info on most places. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* edac: rewrite the sysfs code to use struct deviceMauro Carvalho Chehab2012-06-111-10/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The EDAC subsystem uses the old struct sysdev approach, creating all nodes using the raw sysfs API. This is bad, as the API is deprecated. As we'll be changing the EDAC API, let's first port the existing code to struct device. There's one drawback on this patch: driver-specific sysfs nodes, used by mpc85xx_edac, amd64_edac and i7core_edac won't be created anymore. While it would be possible to also port the device-specific code, that would mix kobj with struct device, with is not recommended. Also, it is easier and nicer to move the code to the drivers, instead, as the core can get rid of some complex logic that just emulates what the device_add() and device_create_file() already does. The next patches will convert the driver-specific code to use the device-specific calls. Then, the remaining bits of the old sysfs API will be removed. NOTE: a per-MC bus is required, otherwise devices with more than one memory controller will hit a bug like the one below: [ 819.094946] EDAC DEBUG: find_mci_by_dev: find_mci_by_dev() [ 819.094948] EDAC DEBUG: edac_create_sysfs_mci_device: edac_create_sysfs_mci_device() idx=1 [ 819.094952] EDAC DEBUG: edac_create_sysfs_mci_device: edac_create_sysfs_mci_device(): creating device mc1 [ 819.094967] EDAC DEBUG: edac_create_sysfs_mci_device: edac_create_sysfs_mci_device creating dimm0, located at channel 0 slot 0 [ 819.094984] ------------[ cut here ]------------ [ 819.100142] WARNING: at fs/sysfs/dir.c:481 sysfs_add_one+0xc1/0xf0() [ 819.107282] Hardware name: S2600CP [ 819.111078] sysfs: cannot create duplicate filename '/bus/edac/devices/dimm0' [ 819.119062] Modules linked in: sb_edac(+) edac_core ip6table_filter ip6_tables ebtable_nat ebtables ipt_MASQUERADE iptable_nat nf_nat nf_conntrack_ipv4 nf_defrag_ipv4 xt_state nf_conntrack ipt_REJECT xt_CHECKSUM iptable_mangle iptable_filter ip_tables bridge stp llc sunrpc binfmt_misc dm_mirror dm_region_hash dm_log vhost_net macvtap macvlan tun kvm microcode pcspkr iTCO_wdt iTCO_vendor_support igb i2c_i801 i2c_core sg ioatdma dca sr_mod cdrom sd_mod crc_t10dif ahci libahci isci libsas libata scsi_transport_sas scsi_mod wmi dm_mod [last unloaded: scsi_wait_scan] [ 819.175748] Pid: 10902, comm: modprobe Not tainted 3.3.0-0.11.el7.v12.2.x86_64 #1 [ 819.184113] Call Trace: [ 819.186868] [<ffffffff8105adaf>] warn_slowpath_common+0x7f/0xc0 [ 819.193573] [<ffffffff8105aea6>] warn_slowpath_fmt+0x46/0x50 [ 819.200000] [<ffffffff811f53d1>] sysfs_add_one+0xc1/0xf0 [ 819.206025] [<ffffffff811f5cf5>] sysfs_do_create_link+0x135/0x220 [ 819.212944] [<ffffffff811f7023>] ? sysfs_create_group+0x13/0x20 [ 819.219656] [<ffffffff811f5df3>] sysfs_create_link+0x13/0x20 [ 819.226109] [<ffffffff813b04f6>] bus_add_device+0xe6/0x1b0 [ 819.232350] [<ffffffff813ae7cb>] device_add+0x2db/0x460 [ 819.238300] [<ffffffffa0325634>] edac_create_dimm_object+0x84/0xf0 [edac_core] [ 819.246460] [<ffffffffa0325e18>] edac_create_sysfs_mci_device+0xe8/0x290 [edac_core] [ 819.255215] [<ffffffffa0322e2a>] edac_mc_add_mc+0x5a/0x2c0 [edac_core] [ 819.262611] [<ffffffffa03412df>] sbridge_register_mci+0x1bc/0x279 [sb_edac] [ 819.270493] [<ffffffffa03417a3>] sbridge_probe+0xef/0x175 [sb_edac] [ 819.277630] [<ffffffff813ba4e8>] ? pm_runtime_enable+0x58/0x90 [ 819.284268] [<ffffffff812f430c>] local_pci_probe+0x5c/0xd0 [ 819.290508] [<ffffffff812f5ba1>] __pci_device_probe+0xf1/0x100 [ 819.297117] [<ffffffff812f5bea>] pci_device_probe+0x3a/0x60 [ 819.303457] [<ffffffff813b1003>] really_probe+0x73/0x270 [ 819.309496] [<ffffffff813b138e>] driver_probe_device+0x4e/0xb0 [ 819.316104] [<ffffffff813b149b>] __driver_attach+0xab/0xb0 [ 819.322337] [<ffffffff813b13f0>] ? driver_probe_device+0xb0/0xb0 [ 819.329151] [<ffffffff813af5d6>] bus_for_each_dev+0x56/0x90 [ 819.335489] [<ffffffff813b0d7e>] driver_attach+0x1e/0x20 [ 819.341534] [<ffffffff813b0980>] bus_add_driver+0x1b0/0x2a0 [ 819.347884] [<ffffffffa0347000>] ? 0xffffffffa0346fff [ 819.353641] [<ffffffff813b19f6>] driver_register+0x76/0x140 [ 819.359980] [<ffffffff8159f18b>] ? printk+0x51/0x53 [ 819.365524] [<ffffffffa0347000>] ? 0xffffffffa0346fff [ 819.371291] [<ffffffff812f5896>] __pci_register_driver+0x56/0xd0 [ 819.378096] [<ffffffffa0347054>] sbridge_init+0x54/0x1000 [sb_edac] [ 819.385231] [<ffffffff8100203f>] do_one_initcall+0x3f/0x170 [ 819.391577] [<ffffffff810bcd2e>] sys_init_module+0xbe/0x230 [ 819.397926] [<ffffffff815bb529>] system_call_fastpath+0x16/0x1b [ 819.404633] ---[ end trace 1654fdd39556689f ]--- This happens because the bus is not being properly initialized. Instead of putting the memory sub-devices inside the memory controller, it is putting everything under the same directory: $ tree /sys/bus/edac/ /sys/bus/edac/ ├── devices │ ├── all_channel_counts -> ../../../devices/system/edac/mc/mc0/all_channel_counts │ ├── csrow0 -> ../../../devices/system/edac/mc/mc0/csrow0 │ ├── csrow1 -> ../../../devices/system/edac/mc/mc0/csrow1 │ ├── csrow2 -> ../../../devices/system/edac/mc/mc0/csrow2 │ ├── dimm0 -> ../../../devices/system/edac/mc/mc0/dimm0 │ ├── dimm1 -> ../../../devices/system/edac/mc/mc0/dimm1 │ ├── dimm3 -> ../../../devices/system/edac/mc/mc0/dimm3 │ ├── dimm6 -> ../../../devices/system/edac/mc/mc0/dimm6 │ ├── inject_addrmatch -> ../../../devices/system/edac/mc/mc0/inject_addrmatch │ ├── mc -> ../../../devices/system/edac/mc │ └── mc0 -> ../../../devices/system/edac/mc/mc0 ├── drivers ├── drivers_autoprobe ├── drivers_probe └── uevent On a multi-memory controller system, the names "csrow%d" and "dimm%d" should be under "mc%d", and not at the main hierarchy level. So, we need to create a per-MC bus, in order to have its own namespace. Reviewed-by: Aristeu Rozanski <arozansk@redhat.com> Cc: Doug Thompson <norsk5@yahoo.com> Cc: Greg K H <gregkh@linuxfoundation.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* edac: Drop __DATE__ usageMichal Marek2011-04-191-1/+1
| | | | | | | | | | | | The kernel already prints its build timestamp during boot, no need to repeat it in random drivers and produce different object files each time. Cc: Doug Thompson <dougthompson@xmission.com> Cc: bluesmoke-devel@lists.sourceforge.net Cc: linux-edac@vger.kernel.org Acked-by: Mauro Carvalho Chehab <mchehab@redhat.com> Signed-off-by: Michal Marek <mmarek@suse.cz>
* EDAC: Export edac sysfs class to users.Borislav Petkov2010-10-211-78/+1
| | | | | | | | Move toplevel sysfs class to the stub and make it available to non-modularized code too. Add proper refcounting of its users and move the registration functionality into the reference counting routines. Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
* Driver core: change sysdev classes to use dynamic kobject namesKay Sievers2008-01-241-1/+1
| | | | | | | | | | All kobjects require a dynamically allocated name now. We no longer need to keep track if the name is statically assigned, we can just unconditionally free() all kobject names on cleanup. Signed-off-by: Kay Sievers <kay.sievers@vrfy.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* drivers/edac: code tidying on export-gplDoug Thompson2007-07-191-4/+5
| | | | | | | | | | | Change EXPORT_SYMBOLs to EXPORT_SYMBOLS_GPL Tidy changes: blank lines, inline removal, add comment Signed-off-by: Doug Thompson <dougthompson@xmission.com> Cc: Greg KH <greg@kroah.com> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* drivers/edac: fix edac_mc sysfs completion codeDoug Thompson2007-07-191-16/+16
| | | | | | | | | | | | | | | | | This patch refactors the 'releasing' of kobjects for the edac_mc type of device. The correct pattern of kobject release is followed. As internal kobjs are allocated they bump a ref count on the top level kobj. It in turn has a module ref count on the edac_core module. When internal kobjects are released, they dec the ref count on the top level kobj. When the top level kobj reaches zero, it decrements the ref count on the edac_core object, allow it to be unloaded, as all resources have all now been released. Cc: Alan Cox alan@lxorguk.ukuu.org.uk Signed-off-by: Doug Thompson <dougthompson@xmission.com> Acked-by: Greg KH <greg@kroah.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* drivers/edac: mod edac_opt_state_to_string functionDouglas Thompson2007-07-191-2/+2
| | | | | | | | | Refactored the function edac_op_state_toString() to be edac_op_state_to_string() for consistent style, and its callers Signed-off-by: Douglas Thompson <dougthompson@xmission.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* drivers/edac: remove null from staticsDouglas Thompson2007-07-191-1/+1
| | | | | | | | | Patches to conform to coding style, namely static don't need to be initialized to NULL nor '0', as that is the default Signed-off-by: Douglas Thompson <dougthompson@xmission.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* drivers/edac: cleanup spaces-gotos after Lindent messupDouglas Thompson2007-07-191-5/+5
| | | | | | | | | | | This patch fixes some remnant spaces inserted by the use of Lindent. Seems Lindent adds some spaces when it shoulded. These have been fixed. In addition, goto targets have issues, these have been fixed in this patch. Signed-off-by: Douglas Thompson <dougthompson@xmission.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* drivers/edac: core Lindent cleanupDouglas Thompson2007-07-191-12/+10
| | | | | | | | | Run the EDAC CORE files through Lindent for cleanup Signed-off-by: Douglas Thompson <dougthompson@xmission.com> Signed-off-by: Dave Jiang <djiang@mvista.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* drivers/edac: updated PCI monitoringDave Jiang2007-07-191-12/+20
| | | | | | | | | | | Moving PCI to a per-instance device model This should include the correct sysfs setup as well. Please review. Signed-off-by: Dave Jiang <djiang@mvista.com> Signed-off-by: Douglas Thompson <dougthompson@xmission.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* drivers/edac: mod MC to use workq instead of kthreadDave Jiang2007-07-191-75/+11
| | | | | | | | | | Move the memory controller object to work queue based implementation from the kernel thread based. Signed-off-by: Dave Jiang <djiang@mvista.com> Signed-off-by: Douglas Thompson <dougthompson@xmission.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* drivers/edac: mod use edac_core.hDouglas Thompson2007-07-191-2/+2
| | | | | | | | | | | In the refactoring of edac_mc.c into several subsystem files, the header file edac_mc.h became meaningless. A new header file edac_core.h was created. All the files that previously included "edac_mc.h" are changed to include "edac_core.h". Signed-off-by: Douglas Thompson <dougthompson@xmission.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* drivers/edac: add new nmi rescanDave Jiang2007-07-191-2/+22
| | | | | | | | | | | | | | | | | | | Provides a way for NMI reported errors on x86 to notify the EDAC subsystem pending ECC errors by writing to a software state variable. Here's the reworked patch. I added an EDAC stub to the kernel so we can have variables that are in the kernel even if EDAC is a module. I also implemented the idea of using the chip driver to select error detection mode via module parameter and eliminate the kernel compile option. Please review/test. Thx! Also, I only made changes to some of the chipset drivers since I am unfamiliar with the other ones. We can add similar changes as we go. Signed-off-by: Dave Jiang <djiang@mvista.com> Signed-off-by: Douglas Thompson <dougthompson@xmission.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* drivers/edac: add edac_device classDouglas Thompson2007-07-191-9/+138
| | | | | | | | | | | | | | | | | | | | | | | This patch adds the new 'class' of object to be managed, named: 'edac_device'. As a peer of the 'edac_mc' class of object, it provides a non-memory centric view of an ERROR DETECTING device in hardware. It provides a sysfs interface and an abstraction for varioius EDAC type devices. Multiple 'instances' within the class are possible, with each 'instance' able to have multiple 'blocks', and each 'block' having 'attributes'. At the 'block' level there are the 'ce_count' and 'ue_count' fields which the device driver can update and/or call edac_device_handle_XX() functions. At each higher level are additional 'total' count fields, which are a summation of counts below that level. This 'edac_device' has been used to capture and present ECC errors which are found in a a L1 and L2 system on a per CORE/CPU basis. Signed-off-by: Douglas Thompson <dougthompson@xmission.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* drivers/edac: split out functions to unique filesDouglas Thompson2007-07-191-0/+130
This is a large patch to refactor the original EDAC module in the kernel and to break it up into better file granularity, such that each source file contains a given subsystem of the EDAC CORE. Originally, the EDAC 'core' was contained in one source file: edac_mc.c with it corresponding edac_mc.h file. Now, there are the following files: edac_module.c The main module init/exit function and other overhead edac_mc.c Code handling the edac_mc class of object edac_mc_sysfs.c Code handling for sysfs presentation edac_pci_sysfs.c Code handling for PCI sysfs presentation edac_core.h CORE .h include file for 'edac_mc' and 'edac_device' drivers edac_module.h Internal CORE .h include file This forms a foundation upon which a later patch can create the 'edac_device' class of object code in a new file 'edac_device.c'. Signed-off-by: Douglas Thompson <dougthompson@xmission.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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