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Message-ID: <20220225053946.GE30182@xsang-OptiPlex-9020>
Date:   Fri, 25 Feb 2022 13:39:46 +0800
From:   kernel test robot <oliver.sang@...el.com>
To:     Mel Gorman <mgorman@...hsingularity.net>
Cc:     lkp@...ts.01.org, lkp@...el.com,
        LKML <linux-kernel@...r.kernel.org>
Subject: [mm/page_alloc]  d8d59b4758:
 BUG:KASAN:stack-out-of-bounds_in_free_unref_page_list



Greeting,

FYI, we noticed the following commit (built with gcc-9):

commit: d8d59b4758bcd1064cef503614702af402725bf1 ("mm/page_alloc: Protect PCP lists with a spinlock")
https://git.kernel.org/cgit/linux/kernel/git/mel/linux.git mm-pcpllist-v1r1

in testcase: boot

on test machine: qemu-system-x86_64 -enable-kvm -cpu SandyBridge -smp 2 -m 16G

caused below changes (please refer to attached dmesg/kmsg for entire log/backtrace):


+-------------------------------------------------------+------------+------------+
|                                                       | 22ddc6d47e | d8d59b4758 |
+-------------------------------------------------------+------------+------------+
| boot_successes                                        | 10         | 0          |
| boot_failures                                         | 0          | 10         |
| BUG:KASAN:stack-out-of-bounds_in_free_unref_page_list | 0          | 10         |
| UBSAN:array-index-out-of-bounds_in_include/linux/mm.h | 0          | 10         |
| canonical_address#:#[##]                              | 0          | 10         |
| RIP:free_unref_page_list                              | 0          | 10         |
| Kernel_panic-not_syncing:Fatal_exception              | 0          | 10         |
+-------------------------------------------------------+------------+------------+


If you fix the issue, kindly add following tag
Reported-by: kernel test robot <oliver.sang@...el.com>


[ 3.816780][ T7] BUG: KASAN: stack-out-of-bounds in free_unref_page_list (include/linux/mm.h:1543 mm/page_alloc.c:3465) 
[    3.816780][    T7] Read of size 8 at addr ffffc9000007f460 by task kworker/u4:0/7
[    3.816780][    T7]
[    3.816780][    T7] CPU: 0 PID: 7 Comm: kworker/u4:0 Not tainted 5.17.0-rc5-00013-gd8d59b4758bc #1
[    3.816780][    T7] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014
[    3.816780][    T7] Workqueue: events_unbound async_run_entry_fn
[    3.816780][    T7] Call Trace:
[    3.816780][    T7]  <TASK>
[ 3.816780][ T7] dump_stack_lvl (lib/dump_stack.c:107) 
[ 3.816780][ T7] print_address_description+0x21/0x180 
[ 3.816780][ T7] ? free_unref_page_list (include/linux/mm.h:1543 mm/page_alloc.c:3465) 
[ 3.816780][ T7] kasan_report.cold (mm/kasan/report.c:443 mm/kasan/report.c:459) 
[ 3.816780][ T7] ? free_unref_page_list (include/linux/mm.h:1543 mm/page_alloc.c:3465) 
[ 3.816780][ T7] free_unref_page_list (include/linux/mm.h:1543 mm/page_alloc.c:3465) 
[ 3.816780][ T7] ? memory_failure_queue_kick (mm/page_owner.c:104) 
[ 3.816780][ T7] release_pages (mm/swap.c:903) 
[ 3.816780][ T7] ? xa_get_order (lib/xarray.c:1763) 
[ 3.816780][ T7] ? pagevec_move_tail_fn (mm/swap.c:903) 
[ 3.816780][ T7] ? _raw_read_unlock_irqrestore (kernel/locking/spinlock.c:161) 
[ 3.816780][ T7] ? __mod_memcg_lruvec_state (mm/memcontrol.c:638 mm/memcontrol.c:714) 
[ 3.816780][ T7] __pagevec_lru_add (include/linux/pagevec.h:57 mm/swap.c:1076) 
[ 3.816780][ T7] ? lru_cache_disable (mm/swap.c:1062) 
[ 3.816780][ T7] ? scan_shadow_nodes (mm/workingset.c:435) 
[ 3.816780][ T7] folio_add_lru (mm/swap.c:469) 
[ 3.816780][ T7] filemap_add_folio (mm/filemap.c:945) 
[ 3.816780][ T7] ? add_to_page_cache_locked (mm/filemap.c:945) 
[ 3.816780][ T7] ? policy_node (include/linux/nodemask.h:265 mm/mempolicy.c:1869) 
[ 3.816780][ T7] __filemap_get_folio (mm/filemap.c:2002) 
[ 3.816780][ T7] ? memcpy (mm/kasan/shadow.c:65 (discriminator 1)) 
[ 3.816780][ T7] ? filemap_map_pages (mm/filemap.c:1940) 
[ 3.816780][ T7] pagecache_get_page (mm/folio-compat.c:125) 
[ 3.816780][ T7] simple_write_begin (fs/libfs.c:561) 
[ 3.816780][ T7] generic_perform_write (mm/filemap.c:3767) 
[ 3.816780][ T7] ? trace_event_raw_event_filemap_set_wb_err (mm/filemap.c:3730) 
[ 3.816780][ T7] ? inode_update_time (fs/inode.c:2059) 
[ 3.816780][ T7] ? generic_write_checks (fs/read_write.c:1649) 
[ 3.816780][ T7] __generic_file_write_iter (mm/filemap.c:3893) 
[ 3.816780][ T7] generic_file_write_iter (include/linux/fs.h:782 mm/filemap.c:3925) 
[ 3.816780][ T7] __kernel_write (fs/read_write.c:535 (discriminator 1)) 
[ 3.816780][ T7] ? do_iter_readv_writev (fs/read_write.c:512) 
[ 3.816780][ T7] ? up_write (arch/x86/include/asm/atomic64_64.h:172 include/linux/atomic/atomic-long.h:95 include/linux/atomic/atomic-instrumented.h:1348 kernel/locking/rwsem.c:1318 kernel/locking/rwsem.c:1567) 
[ 3.816780][ T7] ? do_truncate (fs/open.c:41) 
[ 3.816780][ T7] kernel_write (include/linux/fs.h:2949 fs/read_write.c:565 fs/read_write.c:554) 
[ 3.816780][ T7] xwrite+0x31/0x62 
[ 3.816780][ T7] do_copy (init/initramfs.c:396) 
[ 3.816780][ T7] ? xwrite+0x62/0x62 
[ 3.816780][ T7] ? vfs_truncate (fs/open.c:116) 
[ 3.816780][ T7] ? do_name (init/initramfs.c:361) 
[ 3.816780][ T7] write_buffer (init/initramfs.c:432 (discriminator 1)) 
[ 3.816780][ T7] flush_buffer (init/initramfs.c:444) 
[ 3.816780][ T7] __gunzip (lib/decompress_inflate.c:161) 
[ 3.816780][ T7] ? write_buffer (init/initramfs.c:438) 
[ 3.816780][ T7] ? bunzip2 (lib/decompress_inflate.c:39) 
[ 3.816780][ T7] ? __gunzip (lib/decompress_inflate.c:207) 
[ 3.816780][ T7] gunzip (lib/decompress_inflate.c:207) 
[ 3.816780][ T7] ? initrd_load (init/initramfs.c:46) 
[ 3.816780][ T7] unpack_to_rootfs (init/initramfs.c:502) 
[ 3.816780][ T7] ? initrd_load (init/initramfs.c:46) 
[ 3.816780][ T7] ? do_header (init/initramfs.c:465) 
[ 3.816780][ T7] ? __switch_to (arch/x86/include/asm/bitops.h:55 include/asm-generic/bitops/instrumented-atomic.h:29 include/linux/thread_info.h:89 arch/x86/include/asm/fpu/sched.h:65 arch/x86/kernel/process_64.c:622) 
[ 3.816780][ T7] ? __switch_to_asm (arch/x86/entry/entry_64.S:254) 
[ 3.816780][ T7] ? reserve_initrd_mem (init/initramfs.c:672) 
[ 3.816780][ T7] do_populate_rootfs (init/initramfs.c:686) 
[ 3.816780][ T7] async_run_entry_fn (arch/x86/include/asm/jump_label.h:27 kernel/async.c:129) 
[ 3.816780][ T7] process_one_work (arch/x86/include/asm/jump_label.h:27 include/linux/jump_label.h:212 include/trace/events/workqueue.h:108 kernel/workqueue.c:2312) 
[ 3.816780][ T7] worker_thread (include/linux/list.h:292 kernel/workqueue.c:2455) 
[ 3.816780][ T7] ? process_one_work (kernel/workqueue.c:2397) 
[ 3.816780][ T7] kthread (kernel/kthread.c:377) 
[ 3.816780][ T7] ? kthread_complete_and_exit (kernel/kthread.c:332) 
[ 3.816780][ T7] ret_from_fork (arch/x86/entry/entry_64.S:301) 
[    3.816780][    T7]  </TASK>
[    3.816780][    T7]
[    3.816780][    T7] addr ffffc9000007f460 is located in stack of task kworker/u4:0/7 at offset 56 in frame:
[ 3.816780][ T7] release_pages (mm/swap.c:903) 
[    3.816780][    T7]
[    3.816780][    T7] this frame has 2 objects:
[    3.816780][    T7]  [32, 40) 'flags'
[    3.816780][    T7]  [64, 80) 'pages_to_free'
[    3.816780][    T7]
[    3.816780][    T7] Memory state around the buggy address:
[    3.816780][    T7]  ffffc9000007f300: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[    3.816780][    T7]  ffffc9000007f380: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[    3.816780][    T7] >ffffc9000007f400: 00 00 00 00 00 f1 f1 f1 f1 00 f2 f2 f2 00 00 f3
[    3.816780][    T7]                                                        ^
[    3.816780][    T7]  ffffc9000007f480: f3 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[    3.816780][    T7]  ffffc9000007f500: 00 00 00 00 00 00 00 f1 f1 f1 f1 00 f3 f3 f3 00
[    3.816780][    T7] ==================================================================
[    3.816780][    T7] Disabling lock debugging due to kernel taint
[    3.816780][    T7] ================================================================================
[    3.816780][    T7] UBSAN: array-index-out-of-bounds in include/linux/mm.h:1543:50
[    3.816780][    T7] index 7 is out of range for type 'zone [5]'
[    3.816780][    T7] CPU: 0 PID: 7 Comm: kworker/u4:0 Tainted: G    B             5.17.0-rc5-00013-gd8d59b4758bc #1
[    3.816780][    T7] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014
[    3.816780][    T7] Workqueue: events_unbound async_run_entry_fn
[    3.816780][    T7] Call Trace:
[    3.816780][    T7]  <TASK>
[ 3.816780][ T7] dump_stack_lvl (lib/dump_stack.c:107) 
[ 3.816780][ T7] ubsan_epilogue (lib/ubsan.c:152) 
[ 3.816780][ T7] __ubsan_handle_out_of_bounds.cold (lib/ubsan.c:291 lib/ubsan.c:278) 
[ 3.816780][ T7] ? free_unref_page_list (include/linux/mm.h:1543 mm/page_alloc.c:3465) 
[ 3.816780][ T7] free_unref_page_list (include/linux/mm.h:1543 mm/page_alloc.c:3465) 
[ 3.816780][ T7] ? memory_failure_queue_kick (mm/page_owner.c:104) 
[ 3.816780][ T7] release_pages (mm/swap.c:903) 
[ 3.816780][ T7] ? xa_get_order (lib/xarray.c:1763) 
[ 3.816780][ T7] ? pagevec_move_tail_fn (mm/swap.c:903) 
[ 3.816780][ T7] ? _raw_read_unlock_irqrestore (kernel/locking/spinlock.c:161) 
[ 3.816780][ T7] ? __mod_memcg_lruvec_state (mm/memcontrol.c:638 mm/memcontrol.c:714) 
[ 3.816780][ T7] __pagevec_lru_add (include/linux/pagevec.h:57 mm/swap.c:1076) 
[ 3.816780][ T7] ? lru_cache_disable (mm/swap.c:1062) 
[ 3.816780][ T7] ? scan_shadow_nodes (mm/workingset.c:435) 
[ 3.816780][ T7] folio_add_lru (mm/swap.c:469) 
[ 3.816780][ T7] filemap_add_folio (mm/filemap.c:945) 
[ 3.816780][ T7] ? add_to_page_cache_locked (mm/filemap.c:945) 
[ 3.816780][ T7] ? policy_node (include/linux/nodemask.h:265 mm/mempolicy.c:1869) 
[ 3.816780][ T7] __filemap_get_folio (mm/filemap.c:2002) 
[ 3.816780][ T7] ? memcpy (mm/kasan/shadow.c:65 (discriminator 1)) 
[ 3.816780][ T7] ? filemap_map_pages (mm/filemap.c:1940) 
[ 3.816780][ T7] pagecache_get_page (mm/folio-compat.c:125) 
[ 3.816780][ T7] simple_write_begin (fs/libfs.c:561) 
[ 3.816780][ T7] generic_perform_write (mm/filemap.c:3767) 
[ 3.816780][ T7] ? trace_event_raw_event_filemap_set_wb_err (mm/filemap.c:3730) 
[ 3.816780][ T7] ? inode_update_time (fs/inode.c:2059) 
[ 3.816780][ T7] ? generic_write_checks (fs/read_write.c:1649) 
[ 3.816780][ T7] __generic_file_write_iter (mm/filemap.c:3893) 
[ 3.816780][ T7] generic_file_write_iter (include/linux/fs.h:782 mm/filemap.c:3925) 
[ 3.816780][ T7] __kernel_write (fs/read_write.c:535 (discriminator 1)) 
[ 3.816780][ T7] ? do_iter_readv_writev (fs/read_write.c:512) 
[ 3.816780][ T7] ? up_write (arch/x86/include/asm/atomic64_64.h:172 include/linux/atomic/atomic-long.h:95 include/linux/atomic/atomic-instrumented.h:1348 kernel/locking/rwsem.c:1318 kernel/locking/rwsem.c:1567) 
[ 3.816780][ T7] ? do_truncate (fs/open.c:41) 
[ 3.816780][ T7] kernel_write (include/linux/fs.h:2949 fs/read_write.c:565 fs/read_write.c:554) 
[ 3.816780][ T7] xwrite+0x31/0x62 
[ 3.816780][ T7] do_copy (init/initramfs.c:396) 
[ 3.816780][ T7] ? xwrite+0x62/0x62 
[ 3.816780][ T7] ? vfs_truncate (fs/open.c:116) 
[ 3.816780][ T7] ? do_name (init/initramfs.c:361) 
[ 3.816780][ T7] write_buffer (init/initramfs.c:432 (discriminator 1)) 
[ 3.816780][ T7] flush_buffer (init/initramfs.c:444) 
[ 3.816780][ T7] __gunzip (lib/decompress_inflate.c:161) 
[ 3.816780][ T7] ? write_buffer (init/initramfs.c:438) 
[ 3.816780][ T7] ? bunzip2 (lib/decompress_inflate.c:39) 
[ 3.816780][ T7] ? __gunzip (lib/decompress_inflate.c:207) 
[ 3.816780][ T7] gunzip (lib/decompress_inflate.c:207) 
[ 3.816780][ T7] ? initrd_load (init/initramfs.c:46) 
[ 3.816780][ T7] unpack_to_rootfs (init/initramfs.c:502) 
[ 3.816780][ T7] ? initrd_load (init/initramfs.c:46) 
[ 3.816780][ T7] ? do_header (init/initramfs.c:465) 
[ 3.816780][ T7] ? __switch_to (arch/x86/include/asm/bitops.h:55 include/asm-generic/bitops/instrumented-atomic.h:29 include/linux/thread_info.h:89 arch/x86/include/asm/fpu/sched.h:65 arch/x86/kernel/process_64.c:622) 
[ 3.816780][ T7] ? __switch_to_asm (arch/x86/entry/entry_64.S:254) 
[ 3.816780][ T7] ? reserve_initrd_mem (init/initramfs.c:672) 
[ 3.816780][ T7] do_populate_rootfs (init/initramfs.c:686) 
[ 3.816780][ T7] async_run_entry_fn (arch/x86/include/asm/jump_label.h:27 kernel/async.c:129) 
[ 3.816780][ T7] process_one_work (arch/x86/include/asm/jump_label.h:27 include/linux/jump_label.h:212 include/trace/events/workqueue.h:108 kernel/workqueue.c:2312) 
[ 3.816780][ T7] worker_thread (include/linux/list.h:292 kernel/workqueue.c:2455) 
[ 3.816780][ T7] ? process_one_work (kernel/workqueue.c:2397) 
[ 3.816780][ T7] kthread (kernel/kthread.c:377) 
[ 3.816780][ T7] ? kthread_complete_and_exit (kernel/kthread.c:332) 
[ 3.816780][ T7] ret_from_fork (arch/x86/entry/entry_64.S:301) 
[    3.816780][    T7]  </TASK>
[    3.816780][    T7] ================================================================================
[    3.816780][    T7] general protection fault, probably for non-canonical address 0xdffffc00000005f4: 0000 [#1] SMP KASAN PTI
[    3.816780][    T7] KASAN: probably user-memory-access in range [0x0000000000002fa0-0x0000000000002fa7]
[    3.816780][    T7] CPU: 0 PID: 7 Comm: kworker/u4:0 Tainted: G    B             5.17.0-rc5-00013-gd8d59b4758bc #1
[    3.816780][    T7] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014
[    3.816780][    T7] Workqueue: events_unbound async_run_entry_fn
[ 3.816780][ T7] RIP: 0010:free_unref_page_list (mm/page_alloc.c:3466) 
[ 3.816780][ T7] Code: 06 00 00 48 8d 44 6d 00 48 8d 04 c0 48 c1 e0 06 49 8d 7c 04 60 49 8d 0c 04 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 00 06 00 00 48 8d 44 6d 00 48 89 0c 24 48 8d 04
All code
========
   0:	06                   	(bad)  
   1:	00 00                	add    %al,(%rax)
   3:	48 8d 44 6d 00       	lea    0x0(%rbp,%rbp,2),%rax
   8:	48 8d 04 c0          	lea    (%rax,%rax,8),%rax
   c:	48 c1 e0 06          	shl    $0x6,%rax
  10:	49 8d 7c 04 60       	lea    0x60(%r12,%rax,1),%rdi
  15:	49 8d 0c 04          	lea    (%r12,%rax,1),%rcx
  19:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  20:	fc ff df 
  23:	48 89 fa             	mov    %rdi,%rdx
  26:	48 c1 ea 03          	shr    $0x3,%rdx
  2a:*	80 3c 02 00          	cmpb   $0x0,(%rdx,%rax,1)		<-- trapping instruction
  2e:	0f 85 00 06 00 00    	jne    0x634
  34:	48 8d 44 6d 00       	lea    0x0(%rbp,%rbp,2),%rax
  39:	48 89 0c 24          	mov    %rcx,(%rsp)
  3d:	48                   	rex.W
  3e:	8d                   	.byte 0x8d
  3f:	04                   	.byte 0x4

Code starting with the faulting instruction
===========================================
   0:	80 3c 02 00          	cmpb   $0x0,(%rdx,%rax,1)
   4:	0f 85 00 06 00 00    	jne    0x60a
   a:	48 8d 44 6d 00       	lea    0x0(%rbp,%rbp,2),%rax
   f:	48 89 0c 24          	mov    %rcx,(%rsp)
  13:	48                   	rex.W
  14:	8d                   	.byte 0x8d
  15:	04                   	.byte 0x4
[    3.816780][    T7] RSP: 0000:ffffc9000007f348 EFLAGS: 00010002
[    3.816780][    T7] RAX: dffffc0000000000 RBX: 0000000000000246 RCX: 0000000000002f40
[    3.816780][    T7] RDX: 00000000000005f4 RSI: ffffc9000007f020 RDI: 0000000000002fa0
[    3.816780][    T7] RBP: 0000000000000007 R08: 0000000000000050 R09: fffff5200000fdee
[    3.816780][    T7] R10: ffffc9000007ef6f R11: fffff5200000fded R12: 0000000000000000
[    3.816780][    T7] R13: ffffc9000007f460 R14: fffffbfff427b942 R15: ffffc9000007f460
[    3.816780][    T7] FS:  0000000000000000(0000) GS:ffff88839d600000(0000) knlGS:0000000000000000
[    3.816780][    T7] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    3.816780][    T7] CR2: ffff88843ffff000 CR3: 0000000294414000 CR4: 00000000000006f0
[    3.816780][    T7] Call Trace:
[    3.816780][    T7]  <TASK>
[ 3.816780][ T7] ? memory_failure_queue_kick (mm/page_owner.c:104) 
[ 3.816780][ T7] release_pages (mm/swap.c:903) 
[ 3.816780][ T7] ? xa_get_order (lib/xarray.c:1763) 
[ 3.816780][ T7] ? pagevec_move_tail_fn (mm/swap.c:903) 
[ 3.816780][ T7] ? _raw_read_unlock_irqrestore (kernel/locking/spinlock.c:161) 
[ 3.816780][ T7] ? __mod_memcg_lruvec_state (mm/memcontrol.c:638 mm/memcontrol.c:714) 
[ 3.816780][ T7] __pagevec_lru_add (include/linux/pagevec.h:57 mm/swap.c:1076) 
[ 3.816780][ T7] ? lru_cache_disable (mm/swap.c:1062) 
[ 3.816780][ T7] ? scan_shadow_nodes (mm/workingset.c:435) 
[ 3.816780][ T7] folio_add_lru (mm/swap.c:469) 
[ 3.816780][ T7] filemap_add_folio (mm/filemap.c:945) 
[ 3.816780][ T7] ? add_to_page_cache_locked (mm/filemap.c:945) 
[ 3.816780][ T7] ? policy_node (include/linux/nodemask.h:265 mm/mempolicy.c:1869) 
[ 3.816780][ T7] __filemap_get_folio (mm/filemap.c:2002) 
[ 3.816780][ T7] ? memcpy (mm/kasan/shadow.c:65 (discriminator 1)) 
[ 3.816780][ T7] ? filemap_map_pages (mm/filemap.c:1940) 
[ 3.816780][ T7] pagecache_get_page (mm/folio-compat.c:125) 
[ 3.816780][ T7] simple_write_begin (fs/libfs.c:561) 
[ 3.816780][ T7] generic_perform_write (mm/filemap.c:3767) 
[ 3.816780][ T7] ? trace_event_raw_event_filemap_set_wb_err (mm/filemap.c:3730) 
[ 3.816780][ T7] ? inode_update_time (fs/inode.c:2059) 
[ 3.816780][ T7] ? generic_write_checks (fs/read_write.c:1649) 
[ 3.816780][ T7] __generic_file_write_iter (mm/filemap.c:3893) 
[ 3.816780][ T7] generic_file_write_iter (include/linux/fs.h:782 mm/filemap.c:3925) 
[ 3.816780][ T7] __kernel_write (fs/read_write.c:535 (discriminator 1)) 
[ 3.816780][ T7] ? do_iter_readv_writev (fs/read_write.c:512) 
[ 3.816780][ T7] ? up_write (arch/x86/include/asm/atomic64_64.h:172 include/linux/atomic/atomic-long.h:95 include/linux/atomic/atomic-instrumented.h:1348 kernel/locking/rwsem.c:1318 kernel/locking/rwsem.c:1567) 
[ 3.816780][ T7] ? do_truncate (fs/open.c:41) 
[ 3.816780][ T7] kernel_write (include/linux/fs.h:2949 fs/read_write.c:565 fs/read_write.c:554) 
[ 3.816780][ T7] xwrite+0x31/0x62 
[ 3.816780][ T7] do_copy (init/initramfs.c:396) 
[ 3.816780][ T7] ? xwrite+0x62/0x62 
[ 3.816780][ T7] ? vfs_truncate (fs/open.c:116) 


To reproduce:

        # build kernel
	cd linux
	cp config-5.17.0-rc5-00013-gd8d59b4758bc .config
	make HOSTCC=gcc-9 CC=gcc-9 ARCH=x86_64 olddefconfig prepare modules_prepare bzImage modules
	make HOSTCC=gcc-9 CC=gcc-9 ARCH=x86_64 INSTALL_MOD_PATH=<mod-install-dir> modules_install
	cd <mod-install-dir>
	find lib/ | cpio -o -H newc --quiet | gzip > modules.cgz


        git clone https://github.com/intel/lkp-tests.git
        cd lkp-tests
        bin/lkp qemu -k <bzImage> -m modules.cgz job-script # job-script is attached in this email

        # if come across any failure that blocks the test,
        # please remove ~/.lkp and /lkp dir to run from a clean state.



---
0DAY/LKP+ Test Infrastructure                   Open Source Technology Center
https://lists.01.org/hyperkitty/list/lkp@lists.01.org       Intel Corporation

Thanks,
Oliver Sang


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