Hello,
kernel test robot noticed "BUG:KASAN:global-out-of-bounds_in_fs_validate_description" on:
commit: 635056da10724c7af59483a8251f8e6432b50faa ("[PATCH] kernel: Add Mount Option For Efivarfs")
url: https://github.com/intel-lab-lkp/linux/commits/Jiao-Zhou/kernel-Add-Mount-Option-For-Efivarfs/20230823-002613
base: https://git.kernel.org/cgit/linux/kernel/git/efi/efi.git next
patch link: https://lore.kernel.org/all/20230822162350.1.I96423a31e88428004c2f4a28ccad13828adf433e@changeid/
patch subject: [PATCH] kernel: Add Mount Option For Efivarfs
in testcase: boot
compiler: gcc-12
test machine: qemu-system-x86_64 -enable-kvm -cpu SandyBridge -smp 2 -m 16G
(please refer to attached dmesg/kmsg for entire log/backtrace)
If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <oliver.sang@xxxxxxxxx>
| Closes: https://lore.kernel.org/oe-lkp/202308291443.ea96ac66-oliver.sang@xxxxxxxxx
[ 17.276007][ T1] ==================================================================
[ 17.277001][ T1] BUG: KASAN: global-out-of-bounds in fs_validate_description+0x1c2/0x1e0
[ 17.278097][ T1] Read of size 8 at addr ffffffff84f20b80 by task swapper/1
[ 17.278821][ T1]
[ 17.278821][ T1] CPU: 0 PID: 1 Comm: swapper Not tainted 6.5.0-rc1-00012-g635056da1072 #1
[ 17.278821][ T1] Call Trace:
[ 17.278821][ T1] <TASK>
[ 17.278821][ T1] dump_stack_lvl+0x32/0xa0
[ 17.278821][ T1] print_address_description+0x33/0x3c0
[ 17.278821][ T1] ? fs_validate_description+0x1c2/0x1e0
[ 17.278821][ T1] print_report+0xc1/0x280
[ 17.278821][ T1] ? kasan_addr_to_slab+0x11/0x80
[ 17.278821][ T1] ? fs_validate_description+0x1c2/0x1e0
[ 17.278821][ T1] kasan_report+0x154/0x190
[ 17.278821][ T1] ? fs_validate_description+0x1c2/0x1e0
[ 17.278821][ T1] __asan_report_load8_noabort+0x18/0x20
[ 17.278821][ T1] fs_validate_description+0x1c2/0x1e0
[ 17.278821][ T1] register_filesystem+0x73/0x2b0
[ 17.278821][ T1] ? pstore_blk_init+0x720/0x720
[ 17.278821][ T1] efivarfs_init+0x24/0x50
[ 17.278821][ T1] do_one_initcall+0xfc/0x480
[ 17.278821][ T1] ? trace_event_raw_event_initcall_level+0x1c0/0x1c0
[ 17.278821][ T1] ? __kasan_kmalloc+0x96/0xa0
[ 17.278821][ T1] ? do_initcalls+0x47/0x5b0
[ 17.278821][ T1] do_initcalls+0x2ae/0x5b0
[ 17.278821][ T1] kernel_init_freeable+0x313/0x570
[ 17.278821][ T1] ? rest_init+0x260/0x260
[ 17.278821][ T1] kernel_init+0x23/0x240
[ 17.278821][ T1] ? rest_init+0x260/0x260
[ 17.278821][ T1] ret_from_fork+0x22/0x30
[ 17.278821][ T1] </TASK>
[ 17.278821][ T1]
[ 17.278821][ T1] The buggy address belongs to the variable:
[ 17.278821][ T1] efivarfs_parameters+0x40/0x80
[ 17.278821][ T1]
[ 17.278821][ T1] The buggy address belongs to the physical page:
[ 17.278821][ T1] page:(____ptrval____) refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x4f20
[ 17.278821][ T1] flags: 0x4000000000001000(reserved|zone=1)
[ 17.278821][ T1] page_type: 0xffffffff()
[ 17.278821][ T1] raw: 4000000000001000 ffffea000013c808 ffffea000013c808 0000000000000000
[ 17.278821][ T1] raw: 0000000000000000 0000000000000000 00000001ffffffff 0000000000000000
[ 17.278821][ T1] page dumped because: kasan: bad access detected
[ 17.278821][ T1] page_owner info is not present (never set?)
[ 17.278821][ T1]
[ 17.278821][ T1] Memory state around the buggy address:
[ 17.278821][ T1] ffffffff84f20a80: 00 00 f9 f9 f9 f9 f9 f9 04 f9 f9 f9 f9 f9 f9 f9
[ 17.278821][ T1] ffffffff84f20b00: 04 f9 f9 f9 f9 f9 f9 f9 00 00 00 00 00 00 00 00
[ 17.278821][ T1] >ffffffff84f20b80: f9 f9 f9 f9 00 00 00 00 00 00 00 00 00 00 00 00
[ 17.278821][ T1] ^
[ 17.278821][ T1] ffffffff84f20c00: 00 00 00 00 00 00 00 00 f9 f9 f9 f9 00 00 00 00
[ 17.278821][ T1] ffffffff84f20c80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[ 17.278821][ T1] ==================================================================
[ 17.311721][ T1] Disabling lock debugging due to kernel taint
The kernel config and materials to reproduce are available at:
https://download.01.org/0day-ci/archive/20230829/202308291443.ea96ac66-oliver.sang@xxxxxxxxx
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