Greeting,
FYI, we noticed the following commit (built with gcc-11):
commit: ad9b10d1eaada169bd764abcab58f08538877e26 ("mtd: core: introduce of support for dynamic partitions")
https://git.kernel.org/cgit/linux/kernel/git/next/linux-next.git master
in testcase: boot
on test machine: qemu-system-i386 -enable-kvm -cpu SandyBridge -smp 2 -m 4G
caused below changes (please refer to attached dmesg/kmsg for entire log/backtrace):
If you fix the issue, kindly add following tag
Reported-by: kernel test robot <[email protected]>
[ 4.340248][ T1] BUG: kernel NULL pointer dereference, address: 00000324
[ 4.342253][ T1] #PF: supervisor read access in kernel mode
[ 4.342253][ T1] #PF: error_code(0x0000) - not-present page
[ 4.342253][ T1] *pde = 00000000
[ 4.342253][ T1] Oops: 0000 [#1]
[ 4.342253][ T1] CPU: 0 PID: 1 Comm: swapper Not tainted 5.19.0-rc1-00030-gad9b10d1eaad #1 f61d2ae141b008b3f6be2235daf88ecfc89594ec
[ 4.342253][ T1] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.0-debian-1.16.0-4 04/01/2014
[ 4.342253][ T1] EIP: mtd_check_of_node+0x55/0x150
[ 4.342253][ T1] Code: 1c 8b 45 f0 2b 05 50 96 64 c2 0f 85 0d 01 00 00 83 c4 14 5b 5e 5f 5d c3 8d 74 26 00 90 8b 86 94 03 00 00 3d 08 ff ff ff 74
d7 <8b> 80 24 03 00 00 85 c0 74 cd ba e4 54 55 c2 e8 77 c3 17 00 89 c7
[ 4.342253][ T1] EAX: 00000000 EBX: c4cf2000 ECX: 00000001 EDX: 00000000
[ 4.342253][ T1] ESI: c4cf2000 EDI: c4cf20f8 EBP: c3547e38 ESP: c3547e18
[ 4.342253][ T1] DS: 007b ES: 007b FS: 0000 GS: 0000 SS: 0068 EFLAGS: 00010213
[ 4.342253][ T1] CR0: 80050033 CR2: 00000324 CR3: 02c14000 CR4: 00040690
[ 4.342253][ T1] DR0: 00000000 DR1: 00000000 DR2: 00000000 DR3: 00000000
[ 4.342253][ T1] DR6: fffe0ff0 DR7: 00000400
[ 4.342253][ T1] Call Trace:
[ 4.342253][ T1] ? kfree_const+0x14/0x20
[ 4.342253][ T1] ? kobject_set_name_vargs+0x61/0x90
[ 4.342253][ T1] add_mtd_device+0x287/0x5b0
[ 4.342253][ T1] ? parse_ofoldpart_partitions+0x70/0x70
[ 4.342253][ T1] ? mtd_part_of_parse+0x13f/0x220
[ 4.342253][ T1] ? parse_mtd_partitions+0xc1/0x190
[ 4.342253][ T1] mtd_device_parse_register+0x1a7/0x290
[ 4.342253][ T1] mtdram_init_device+0xbc/0x100
[ 4.342253][ T1] init_mtdram+0x6c/0xb4
[ 4.342253][ T1] ? init_pmc551+0x3bf/0x3bf
[ 4.342253][ T1] do_one_initcall+0x5d/0x240
[ 4.342253][ T1] ? rdinit_setup+0x3d/0x3d
[ 4.342253][ T1] do_initcalls+0xf8/0x117
[ 4.342253][ T1] kernel_init_freeable+0xb1/0xe0
[ 4.342253][ T1] ? rest_init+0xb0/0xb0
[ 4.342253][ T1] kernel_init+0x17/0x100
[ 4.342253][ T1] ret_from_fork+0x1c/0x30
[ 4.342253][ T1] Modules linked in:
[ 4.342253][ T1] CR2: 0000000000000324
[ 4.342253][ T1] ---[ end trace 0000000000000000 ]---
[ 4.342253][ T1] EIP: mtd_check_of_node+0x55/0x150
[ 4.342253][ T1] Code: 1c 8b 45 f0 2b 05 50 96 64 c2 0f 85 0d 01 00 00 83 c4 14 5b 5e 5f 5d c3 8d 74 26 00 90 8b 86 94 03 00 00 3d 08 ff ff ff 74 d7 <8b> 80 24 03 00 00 85 c0 74 cd ba e4 54 55 c2 e8 77 c3 17 00 89 c7
[ 4.342253][ T1] EAX: 00000000 EBX: c4cf2000 ECX: 00000001 EDX: 00000000
[ 4.342253][ T1] ESI: c4cf2000 EDI: c4cf20f8 EBP: c3547e38 ESP: c3547e18
[ 4.342253][ T1] DS: 007b ES: 007b FS: 0000 GS: 0000 SS: 0068 EFLAGS: 00010213
[ 4.342253][ T1] CR0: 80050033 CR2: 00000324 CR3: 02c14000 CR4: 00040690
[ 4.342253][ T1] DR0: 00000000 DR1: 00000000 DR2: 00000000 DR3: 00000000
[ 4.342253][ T1] DR6: fffe0ff0 DR7: 00000400
[ 4.342253][ T1] Kernel panic - not syncing: Fatal exception
[ 4.342253][ T1] Kernel Offset: disabled
To reproduce:
# build kernel
cd linux
cp config-5.19.0-rc1-00030-gad9b10d1eaad .config
make HOSTCC=gcc-11 CC=gcc-11 ARCH=i386 olddefconfig prepare modules_prepare bzImage modules
make HOSTCC=gcc-11 CC=gcc-11 ARCH=i386 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.
--
0-DAY CI Kernel Test Service
https://01.org/lkp