Greeting,
FYI, we noticed the following commit (built with gcc-11):
commit: 8e7efa91c9813eaf7149d4c0880afc05d6ee3be9 ("[PATCH 2/3] drm/ttm: stop allocating dummy resources during BO creation")
url: https://github.com/intel-lab-lkp/linux/commits/Christian-K-nig/drm-i915-audit-bo-resource-usage/20220712-194741
base: git://anongit.freedesktop.org/drm/drm-misc drm-misc-next
patch link: https://lore.kernel.org/intel-gfx/[email protected]
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):
If you fix the issue, kindly add following tag
Reported-by: kernel test robot <[email protected]>
[ 5.978437][ T280] BUG: kernel NULL pointer dereference, address: 0000000000000010
[ 5.979888][ T280] #PF: supervisor read access in kernel mode
[ 5.980313][ T280] #PF: error_code(0x0000) - not-present page
[ 5.980729][ T280] PGD 800000012dff9067 P4D 800000012dff9067 PUD 12df13067 PMD 0
[ 5.981243][ T280] Oops: 0000 [#1] SMP PTI
[ 5.981532][ T280] CPU: 0 PID: 280 Comm: modprobe Not tainted 5.19.0-rc2-00454-g8e7efa91c981 #1
[ 5.982122][ T280] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.0-debian-1.16.0-4 04/01/2014
[ 5.982808][ T280] RIP: 0010:ttm_bo_validate (drivers/gpu/drm/ttm/ttm_bo.c:909) ttm
[ 5.983208][ T280] Code: 72 48 8b 74 24 08 31 d2 4c 8d 44 24 10 48 89 d9 48 89 ef e8 10 eb ff ff 83 f8 b8 74 d0 85 c0 75 52 48 8b 95 58 01 00 00 31 c0 <8b> 52 10 85 d2 75 9f 48 8b 44 24 20 65 48 2b 04 25 28 00 00 00 75
All code
========
0: 72 48 jb 0x4a
2: 8b 74 24 08 mov 0x8(%rsp),%esi
6: 31 d2 xor %edx,%edx
8: 4c 8d 44 24 10 lea 0x10(%rsp),%r8
d: 48 89 d9 mov %rbx,%rcx
10: 48 89 ef mov %rbp,%rdi
13: e8 10 eb ff ff callq 0xffffffffffffeb28
18: 83 f8 b8 cmp $0xffffffb8,%eax
1b: 74 d0 je 0xffffffffffffffed
1d: 85 c0 test %eax,%eax
1f: 75 52 jne 0x73
21: 48 8b 95 58 01 00 00 mov 0x158(%rbp),%rdx
28: 31 c0 xor %eax,%eax
2a:* 8b 52 10 mov 0x10(%rdx),%edx <-- trapping instruction
2d: 85 d2 test %edx,%edx
2f: 75 9f jne 0xffffffffffffffd0
31: 48 8b 44 24 20 mov 0x20(%rsp),%rax
36: 65 48 2b 04 25 28 00 sub %gs:0x28,%rax
3d: 00 00
3f: 75 .byte 0x75
Code starting with the faulting instruction
===========================================
0: 8b 52 10 mov 0x10(%rdx),%edx
3: 85 d2 test %edx,%edx
5: 75 9f jne 0xffffffffffffffa6
7: 48 8b 44 24 20 mov 0x20(%rsp),%rax
c: 65 48 2b 04 25 28 00 sub %gs:0x28,%rax
13: 00 00
15: 75 .byte 0x75
[ 5.984680][ T280] RSP: 0018:ffffa4bdc07d7908 EFLAGS: 00010246
[ 5.985115][ T280] RAX: 0000000000000000 RBX: ffffa4bdc07d7998 RCX: ffff8ff4260895a0
[ 5.985683][ T280] RDX: 0000000000000000 RSI: ffffa4bdc07d7998 RDI: ffff8ff42b448600
[ 5.986271][ T280] RBP: ffff8ff42b448600 R08: ffffa4bdc07d7918 R09: ffff8ff42b5ea000
[ 5.986845][ T280] R10: 00000000ffffffff R11: 0000000000000000 R12: ffff8ff42b4487b0
[ 5.987436][ T280] R13: 0000000000000000 R14: ffff8ff42bd5c000 R15: ffff8ff596532e80
[ 5.987996][ T280] FS: 00007f6e79ea7700(0000) GS:ffff8ff72fc00000(0000) knlGS:0000000000000000
[ 5.988626][ T280] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 5.989078][ T280] CR2: 0000000000000010 CR3: 000000012deb0000 CR4: 00000000000406f0
[ 5.989630][ T280] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 5.990191][ T280] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 5.990752][ T280] Call Trace:
[ 5.990989][ T280] <TASK>
[ 5.991199][ T280] ? drm_vma_offset_add (include/drm/drm_mm.h:439 include/drm/drm_mm.h:462 drivers/gpu/drm/drm_vma_manager.c:209) drm
[ 5.991632][ T280] ttm_bo_init_reserved (drivers/gpu/drm/ttm/ttm_bo.c:994) ttm
[ 5.992046][ T280] ttm_bo_init_validate (drivers/gpu/drm/ttm/ttm_bo.c:1054) ttm
[ 5.992454][ T280] ? bo_driver_evict_flags (drivers/gpu/drm/drm_gem_vram_helper.c:132) drm_vram_helper
[ 5.992950][ T280] drm_gem_vram_create (drivers/gpu/drm/drm_gem_vram_helper.c:232) drm_vram_helper
[ 5.993415][ T280] ? bo_driver_evict_flags (drivers/gpu/drm/drm_gem_vram_helper.c:132) drm_vram_helper
[ 5.993892][ T280] drm_gem_vram_fill_create_dumb (drivers/gpu/drm/drm_gem_vram_helper.c:525) drm_vram_helper
[ 5.994385][ T280] drm_client_framebuffer_create (drivers/gpu/drm/drm_client.c:269 drivers/gpu/drm/drm_client.c:419) drm
[ 5.994885][ T280] drm_fb_helper_generic_probe (drivers/gpu/drm/drm_fb_helper.c:2436 (discriminator 4)) drm_kms_helper
[ 5.995436][ T280] drm_fb_helper_single_fb_probe (drivers/gpu/drm/drm_fb_helper.c:1754) drm_kms_helper
[ 5.995970][ T280] __drm_fb_helper_initial_config_and_unlock (drivers/gpu/drm/drm_fb_helper.c:1931) drm_kms_helper
[ 5.996564][ T280] drm_fbdev_client_hotplug (drivers/gpu/drm/drm_fb_helper.c:2025 drivers/gpu/drm/drm_fb_helper.c:2017 drivers/gpu/drm/drm_fb_helper.c:2539) drm_kms_helper
[ 5.997028][ T280] drm_fbdev_generic_setup (drivers/gpu/drm/drm_fb_helper.c:2626) drm_kms_helper
[ 5.997481][ T280] bochs_pci_probe (drivers/gpu/drm/tiny/bochs.c:670 drivers/gpu/drm/tiny/bochs.c:635) bochs
[ 5.997842][ T280] local_pci_probe (drivers/pci/pci-driver.c:324)
[ 5.998155][ T280] pci_call_probe (drivers/pci/pci-driver.c:392)
[ 5.998460][ T280] ? kernfs_create_link (fs/kernfs/symlink.c:48)
[ 5.998794][ T280] pci_device_probe (drivers/pci/pci-driver.c:461)
[ 5.999110][ T280] really_probe (drivers/base/dd.c:555 drivers/base/dd.c:634)
[ 5.999147][ T278] scsi host1: ata_piix
[ 5.999436][ T280] __driver_probe_device (drivers/base/dd.c:764)
[ 5.999933][ T278] ata1: PATA max MWDMA2 cmd 0x1f0 ctl 0x3f6 bmdma 0xc040 irq 14
[ 6.000100][ T280] driver_probe_device (drivers/base/dd.c:794)
[ 6.000645][ T278] ata2: PATA max MWDMA2 cmd 0x170 ctl 0x376 bmdma 0xc048 irq 15
[ 6.000968][ T280] __driver_attach (drivers/base/dd.c:1164)
[ 6.001782][ T280] ? __device_attach_driver (drivers/base/dd.c:1116)
[ 6.002148][ T280] ? __device_attach_driver (drivers/base/dd.c:1116)
[ 6.002513][ T280] bus_for_each_dev (drivers/base/bus.c:301)
[ 6.002841][ T280] bus_add_driver (drivers/base/bus.c:618)
[ 6.003174][ T280] driver_register (drivers/base/driver.c:240)
[ 6.003508][ T280] ? 0xffffffffc0529000
[ 6.003801][ T280] do_one_initcall (init/main.c:1295)
[ 6.004137][ T280] ? __cond_resched (kernel/sched/core.c:8218)
[ 6.004480][ T280] ? kmem_cache_alloc_trace (mm/slub.c:3216 mm/slub.c:3222 mm/slub.c:3253)
[ 6.004846][ T280] do_init_module (kernel/module/main.c:2434)
[ 6.005154][ T280] __do_sys_init_module (kernel/module/main.c:2894)
[ 6.005159][ T192] result_service: raw_upload, RESULT_MNT: /10.239.97.5/result, RESULT_ROOT: /10.239.97.5/result/boot/1/vm-snb/quantal-x86_64-core-20190426.cgz/x86_64-rhel-8.3/gcc-11/8e7efa91c9813eaf7149d4c0880afc05d6ee3be9/3, TMP_RESULT_ROOT: /tmp/lkp/result
[ 6.005498][ T280] do_syscall_64 (arch/x86/entry/common.c:50 arch/x86/entry/common.c:80)
[ 6.005504][ T280] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:115)
[ 6.007755][ T280] RIP: 0033:0x7f6e799c0bca
[ 6.008070][ T280] Code: 48 8b 0d 79 32 2c 00 31 d2 48 29 c2 64 89 11 48 83 c8 ff eb ea 90 90 90 90 90 90 90 90 90 90 90 49 89 ca b8 af 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 46 32 2c 00 31 d2 48 29 c2 64
All code
========
0: 48 8b 0d 79 32 2c 00 mov 0x2c3279(%rip),%rcx # 0x2c3280
7: 31 d2 xor %edx,%edx
9: 48 29 c2 sub %rax,%rdx
c: 64 89 11 mov %edx,%fs:(%rcx)
f: 48 83 c8 ff or $0xffffffffffffffff,%rax
13: eb ea jmp 0xffffffffffffffff
15: 90 nop
16: 90 nop
17: 90 nop
18: 90 nop
19: 90 nop
1a: 90 nop
1b: 90 nop
1c: 90 nop
1d: 90 nop
1e: 90 nop
1f: 90 nop
20: 49 89 ca mov %rcx,%r10
23: b8 af 00 00 00 mov $0xaf,%eax
28: 0f 05 syscall
2a:* 48 3d 01 f0 ff ff cmp $0xfffffffffffff001,%rax <-- trapping instruction
30: 73 01 jae 0x33
32: c3 retq
33: 48 8b 0d 46 32 2c 00 mov 0x2c3246(%rip),%rcx # 0x2c3280
3a: 31 d2 xor %edx,%edx
3c: 48 29 c2 sub %rax,%rdx
3f: 64 fs
Code starting with the faulting instruction
===========================================
0: 48 3d 01 f0 ff ff cmp $0xfffffffffffff001,%rax
6: 73 01 jae 0x9
8: c3 retq
9: 48 8b 0d 46 32 2c 00 mov 0x2c3246(%rip),%rcx # 0x2c3256
10: 31 d2 xor %edx,%edx
12: 48 29 c2 sub %rax,%rdx
15: 64 fs
To reproduce:
# build kernel
cd linux
cp config-5.19.0-rc2-00454-g8e7efa91c981 .config
make HOSTCC=gcc-11 CC=gcc-11 ARCH=x86_64 olddefconfig prepare modules_prepare bzImage modules
make HOSTCC=gcc-11 CC=gcc-11 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.
--
0-DAY CI Kernel Test Service
https://01.org/lkp